RU2842304C1 - Skin care device - Google Patents

Abstract

FIELD: medical equipment.

SUBSTANCE: skin care device comprises a body provided with a light-emitting region, a light-emitting unit, a cold compress unit and a heat sink unit. Light-emitting unit is located in the body and is configured to generate light from the light-emitting region onto the skin to be treated. Cold compress assembly is located in the light-emitting area for the cold compress onto the skin. Heat removal unit includes a fan, a temperature control plate and a radiator installed on it. Fan is equipped with a ventilation hole. One end of the temperature control plate is thermally connected to the cold compress unit, and the other end is located at the ventilation hole. Fan directs a first part of the air stream through one side of the temperature control plate lying away from the radiator in order to remove heat on the light-emitting unit. Fan also provides the direction of the second part of the air flow through the radiator to remove heat on the cold compressor unit.

EFFECT: improved heat removal by the skin care device, which increases reliability and safety of the device.

20 cl, 22 dwg

Description

FIELD OF TECHNICAL INVENTION

The present invention relates to the field of skin treatment technology, in particular to a device for skin care.

LEVEL OF TECHNOLOGY

Hair removal devices, skin rejuvenation devices, etc. are widely used in people's lives as skin care equipment. These skin care devices mainly illuminate the user's skin with IPL (Intense Pulsed Light) or laser light sources, thereby achieving effects such as hair removal or photon rejuvenation on the user's skin.

Taking the hair removal device as an example, the hair removal device includes a housing, an IPL light source, and a cold compress unit. The housing is provided with a light emitting area, the IPL light source is located inside the housing and is used to generate light from the light emitting area to the skin, the cold compress unit is located in the light emitting area and is used to apply cold compress to the skin.

In related technologies, the light source and cold compress unit need to dissipate heat to improve the safety of use. However, the heat dissipation effect of skin care devices in related technologies needs to be improved.

Technical solutions

An embodiment of the present invention provides a skin care device that is configured to improve the heat dissipation effect of the skin care device.

An embodiment of the present invention provides a skin care device comprising:

a housing provided with a light-emitting area;

a light emitting unit located in the housing, wherein the light emitting unit is used to generate light emitted from the light emitting region onto the skin to be treated;

a cold compress unit located in the light emitting area for cold compressing the skin; and

a heat dissipation unit that includes a fan, a temperature control plate and a radiator mounted on the temperature control plate, the fan is provided with a first ventilation hole, wherein one end of the temperature control plate is thermally connected to the cold compress unit, and the other end of the temperature control plate is located at the first ventilation hole, the fan directs a first portion of the air flow through one side of the temperature control plate located away from the radiator and the light emitting unit to dissipate heat on the light emitting unit, and the fan directs a second portion of the air flow through the radiator to dissipate heat on the cold compress unit.

In some embodiments, the skin care device further comprises a bracket assembly, wherein the bracket assembly is located in the housing, the bracket assembly and the temperature control plate form a first heat sink channel for directing the first portion of the air flow. The light-emitting unit is at least partially located in the first heat sink channel. The bracket assembly further comprises an insulating portion, wherein the insulating portion separates the light-emitting unit from the temperature control plate.

In some embodiments, along the light emitting unit in the direction of the first ventilation hole, the insulating portion is shorter than the temperature control plate and rests on the temperature control plate; and/or the side surface of the temperature control plate facing one side of the light emitting unit includes a shielding region and an open region, the insulating portion rests on the shielding region, and the minimum distance between the open region and the light emitting unit is greater than or equal to 6 mm; and/or the side surface of the temperature control plate facing one side of the light emitting unit includes a shielding region and an open region, the insulating portion rests on the shielding region, and the open region is a flat surface for flow diversion and heat dissipation; and/or the skin care device is a hair removal device or a skin rejuvenation device.

In some embodiments, the skin care device further comprises a bracket assembly, wherein the bracket assembly is located in the housing, the bracket assembly and the temperature control plate form the first heat dissipation channel and the second heat dissipation channel. The light emitting unit is at least partially installed in the first heat dissipation channel, one side of the temperature control plate and the bracket assembly form a near section of the ventilation opening of the first heat dissipation channel, wherein the near section of the ventilation opening of the first heat dissipation channel is connected to the first ventilation opening, and the fan directs the first portion of the air flow through the near section of the ventilation opening of the first heat dissipation channel, thereby removing heat on the light emitting unit. The radiator is located in the second heat dissipation channel, the other side of the thermal control plate and the bracket assembly form a near section of the ventilation opening of the second heat dissipation channel, wherein the near section of the ventilation opening of the second heat dissipation channel is connected to the first ventilation opening, and the fan directs the second part of the air flow through the near section of the ventilation opening of the second heat dissipation channel, thereby removing heat on the cold compress assembly.

In some embodiments, the light-emitting unit is located along the length direction of the first ventilation hole; the near section of the ventilation hole of the first heat dissipation channel and the near section of the ventilation hole of the second heat dissipation channel are respectively connected to different regions along the width of the first ventilation hole.

In some embodiments, the first heat dissipation channel includes a mounting section and a deflector section distributed along the light-emitting unit in the direction of the first ventilation opening. The light-emitting unit is at least partially installed in the mounting section. One end of the deflector section is located on the first ventilation opening and is connected to the first ventilation opening, and the other end of the deflector section is connected to the mounting section. The near section of the ventilation opening of the first heat dissipation channel is formed in the deflector section. Along the direction of the first ventilation opening to the light-emitting unit, the cross-sectional area of at least a part of the deflector section gradually increases.

In some embodiments, the inner wall of the deflector section includes a first inner side wall facing the thermal control plate and a second inner side wall located opposite the first inner side wall. Along the direction of the first ventilation opening to the light-emitting unit, at least one of the first inner side wall and the second inner side wall are deviated from each other, due to which the distance between the first inner side wall and the second inner side wall gradually increases.

In some embodiments, in the direction from the first inner side wall to the second inner side wall, the width of the deflector section near one end of the light-emitting unit is greater than or equal to the width of the light-emitting unit.

In some embodiments, the deflector section is provided with a first anti-turbulence structure to limit the formation of turbulence in the deflector section.

In some embodiments, the light-emitting unit includes a lamp and a reflective component, wherein the reflective component comprises an arcuate portion located around the lamp, the arcuate portion is at least partially located on the side of the lamp near the deflector section. One end of the circumference of the arcuate portion adjoins the first inner side wall, and the other end of the circumference of the arcuate portion adjoins the second inner side wall. The first inner side wall and/or the second inner side wall are provided with a first anti-turbulent structure.

In some embodiments, the first anti-turbulence protection structure includes a deflector. The deflector extends along the first ventilation opening in the direction of the light-emitting unit. And/or several deflectors are provided, wherein several deflectors are arranged at intervals along the length direction of the light-emitting unit. And/or the deflector comprises a first bevel and a second bevel arranged relative to each other in the thickness direction; along the direction of the first ventilation opening to the light-emitting unit, the first bevel and the second bevel are inclined in a direction opposite to each other, as a result of which the thickness of the deflector near one end of the light-emitting unit is greater than the thickness of the deflector at a distance from one end of the light-emitting unit. And/or the inner wall of the deflector section comprises a first deflector surface connected to the deflector, the deflector further comprises a third bevel, the third bevel is arranged on the side of the deflector remote from the first deflector surface; along the first ventilation hole in the direction of the light-emitting unit, the third bevel is inclined in a direction opposite to the first deflector surface, as a result of which the height of the deflector protruding from the first deflector surface at one end near the light-emitting unit is greater than the height of the deflector protruding from the first deflector surface at one end away from the light-emitting unit.

In some embodiments, one end of the thermal control plate located near the first ventilation opening is deflected to the side close to the place where the light-emitting unit is located, with the formation of a deflectable section. The deflectable section reaches the first ventilation opening, the side of the deflectable section close to the light-emitting unit and the bracket assembly form at least a part of the deflector section, wherein the side of the deflectable section facing away from the light-emitting unit and the bracket assembly form a near section of the ventilation opening of the second heat dissipation channel.

In some embodiments, the radiator comprises: a near section of the heat sink mounted on the deflectable section; and a far section of the heat sink connected to one end of the near section of the heat sink near the light-emitting region. The width of the near section of the heat sink is greater than the width of the far section of the heat sink, and the width of the radiator is the distance from the side of the radiator close to the thermal control plate to the side remote from the thermal control plate.

In some embodiments, the radiator includes a connecting side mounted on the thermal control plate and a free side remote from the thermal control plate. Along the direction of the light-emitting unit to the first ventilation hole, the connecting side and the free side of the near section of the heat sink are inclined in a direction from each other, the width of the near section of the heat sink gradually increases.

In some embodiments, the housing includes a light-emitting section extending from the junction of the near section of the heat sink and the far section of the heat sink to the light-emitting region. Along the direction of the light-emitting unit to the light-emitting region, the cross-sectional area of the light-emitting section gradually decreases.

In some embodiments, several radiators are provided, the radiators include a connecting side mounted on the thermal control plate and a free side facing away from the thermal control plate, the free sides of several radiators form free surfaces, and the free surfaces include a wind protection area near the first ventilation opening and a circulation area near the cold compress unit. The heat dissipation unit further includes a shielding part, wherein the shielding part shields the wind protection area, and the wind between adjacent radiators flows out or in from the circulation area near the cold compress unit.

In some embodiments, along the first ventilation opening in the direction of the light-emitting unit, the length of the shielding portion is more than one third of the length of the radiator.

In some embodiments, the shielding portion at least shields the free side of the near section of the heat sink.

In some embodiments, the shielding portion includes a windshield, wherein the windshield covers the free sides of several radiators; and/or the shielding portion includes several folds, and each of the folds is folded back and connected to the free side of one of the radiators.

In some embodiments, the housing is further provided with a second ventilation hole connected to the outer side of the housing, wherein the second ventilation hole is located on the radiator side, away from the thermal control plate, the second ventilation hole is provided in accordance with the shielding part, the second ventilation hole is connected to the circulation area.

In some embodiments, a second anti-turbulent structure is provided on the side of the radiator remote from the thermal control plate, wherein the second anti-turbulent structure is located in the circulation region to limit the air flow leaving the circulation region to form turbulence.

In some embodiments, each of the radiators is provided with a second anti-turbulent structure. and/or the second anti-turbulent structure comprises a plurality of toothed parts, wherein the toothed parts are made convex on the side of the radiator remote from the thermal control plate. And/or the second anti-turbulent structure comprises a plurality of toothed parts, wherein the toothed part has a triangular shape.

In some embodiments, the housing is also provided with a ventilation hole connected to the outer side of the housing, wherein the second ventilation hole is located on the side of the radiator remote from the thermal control plate; one end of the first heat-sink channel, located at a distance from the first ventilation hole, is connected to the second ventilation hole connected to the outer side of the housing; wherein one end of the second heat-sink channel, located at a distance from the first ventilation hole, is connected to the second ventilation hole in such a way as to be connected to the outer side of the housing.

In some embodiments, the housing is also provided with a second ventilation hole connected to the outer side of the housing, wherein the second ventilation hole is located on the side of the radiator remote from the thermal control plate. The inner wall of the housing also has a third heat-dissipation channel, one end of the third heat-dissipation channel is connected to the end of the first heat-dissipation channel remote from the first ventilation hole, and the other end of the third heat-dissipation channel and the end of the second heat-dissipation channel located away from the first ventilation hole are connected to the second air ventilation hole and form a Bernoulli structure at the junction.

In some embodiments, the outlet of one end of the third heat dissipation channel adjacent to the second ventilation opening is located on the inner wall of one end of the second heat dissipation channel adjacent to the second ventilation opening.

In some embodiments, the second heat dissipation channel extends from the first ventilation opening of the fan to the second ventilation opening of the housing, a radiator is provided in the second heat dissipation channel, and the first ventilation opening and the second ventilation opening are adjacent to the radiator; the first heat dissipation channel is located on the side of the thermal control plate, remote from the second ventilation opening, thus, the total length of the air flow path in the first heat dissipation channel and the third heat dissipation channel is greater than the total length of the air flow path in the second heat dissipation channel.

In some embodiments, the skin care device also includes a printed circuit board assembly. The printed circuit board assembly includes: a printed circuit board located in the housing, wherein the printed circuit board and the bracket assembly form a third heat-dissipation channel; a conductive bracket mounted on the printed circuit board and located in the third heat-dissipation channel. The light-emitting unit comprises a lamp, the end portion of the lamp is connected to the conductive bracket in such a way that the lamp rests on the printed circuit board and is electrically connected to the printed circuit board.

In some embodiments, the skin care device further comprises a printed circuit board assembly, wherein the printed circuit board assembly comprises a printed circuit board and a conductive bracket, the printed circuit board is located in the housing, and the conductive bracket is mounted on the printed circuit board. The light-emitting unit comprises: a lamp, the end portion of the lamp is connected to the conductive bracket in such a way that the lamp rests on the printed circuit board and is electrically connected to the printed circuit board; and reflective components, wherein the reflective components are located around the lamp, the reflective components are electrically connected to the printed circuit board, and the distance between the reflective component and the lamp is less than a predetermined distance, due to which the reflective component is used to light the lamp.

In some embodiments, the printed circuit board assembly further includes an insulating element, wherein the insulating element is mounted on at least one lamp and a conductive bracket, the insulating element separates the reflective component and the conductive bracket, and/or at least two lamps are provided, and at least two of them are installed at an interval.

In some embodiments, the inner wall of the first heat sink channel is provided with a mounting hole, and the light-emitting unit is installed in the first heat sink channel through the mounting hole and forms a gap ventilation hole with the inner wall of the mounting hole. The light-emitting unit comprises a reflective component and a light source, the light source is located in the reflective component, the surrounding side of the reflective component is provided with a side ventilation hole, the side ventilation hole is connected to the first heat sink channel, and the end portion of the reflective component is also provided with an end ventilation hole.

In some embodiments, the end vents and clearance vents are located adjacent to each other to form a Bernoulli structure.

In some embodiments, the light source includes a lamp, and a reflective component is located on the peripheral side of the lamp. In the longitudinal direction of the lamp, the end portion of the reflective component is cut in the mounting hole, and the outer wall of the reflective component and the inner wall of the mounting hole form a clearance vent. In the longitudinal direction of the lamp, an end vent is formed between the inner wall of the reflective component and the lamp, so that the clearance vent and the end vent form a Bernoulli structure.

In some embodiments, the light-emitting region and the first ventilation hole are located on different sides of the peripheral direction of the lamp and are located relative to each other; and/or both sides of the reflective component form openings in the direction of the light-emitting region in order to reduce the light generated by the lamp to the light-emitting region, wherein a lateral ventilation hole is provided on at least one side of the circumferential direction of the reflective component; and/or the inner wall of the first heat-sink channel is provided with a mounting opening at least at one end in the length direction of the lamp, wherein the mounting openings located on different sides of the longitudinal direction of the lamp are connected to the second heat-sink channel through different third heat-sink channels.

In some embodiments, the light-emitting unit comprises a lamp that is installed in the mounting section. The inner wall of the deflector section also includes a third inner wall and a fourth inner wall, the third inner side wall and the fourth inner side wall are connected between the first inner side wall and the second inner side wall, the third inner side wall and the fourth inner side wall are respectively located at different ends in the direction of the length of the lamp. Along the direction of the first ventilation opening to the light-emitting unit, at least one of the third inner side wall and the fourth inner side wall is inclined in a direction close to the other, to direct a portion of the air coming out of the first ventilation opening to the light-emitting unit.

In some embodiments, in the direction of the length of the lamp, the length of the deflector section near one end of the light-emitting unit is less than the length of the lamp.

In some embodiments, the bracket assembly is also provided with at least one third heat dissipation channel, wherein the third heat dissipation channel is located on the side of the third inner side wall facing away from the fourth inner side wall and/or on the side of the fourth inner side wall facing away from the third inner side wall, the third heat dissipation channel extends from the first inner side wall to the second inner side wall, one end of the third heat dissipation channel is connected to the end of the first heat dissipation channel located at a distance from the first ventilation opening, the other end of the third heat dissipation channel is connected to the second heat dissipation channel.

In an embodiment of the present invention, since the fan directs the first part of the air flow and the second part of the air flow through different sides of the temperature control plate, respectively, the contact area between the temperature control plate and the cooling air flow increases, thus increasing the heat dissipation efficiency of the temperature control plate, thereby improving the heat dissipation efficiency of the cold compress unit and, ultimately, improving the overall heat dissipation efficiency of the skin care device.

Description of drawings

The technical solutions and advantageous effects of the present invention will be apparent from the detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

Fig. 1 is a schematic diagram of a skin care device provided by an embodiment of the present invention;

Fig. 2 is a cross-sectional view of the skin care device shown in Fig. 1, in the direction A-A;

Fig. 3 is a schematic diagram of the installation positions of the light emitting unit, the cold compress unit and the heat dissipation unit of the skin care device shown in Fig. 2;

Fig. 4 is a partially enlarged view of point X in Fig. 2;

Fig. 5 is a schematic representation of another branching structure at point X in Fig. 2;

Fig. 6 is another cross-sectional view of the skin care device shown in Fig. 1, taken in the direction A-A;

Fig. 7 is a partially enlarged view Y of Fig. 6;

Fig. 8 is another schematic representation of a partial enlarged view of point X in Fig. 2;

Fig. 9 is a schematic diagram of the structure of the first shielding portion of the radiator in the skin care device shown in Fig. 2;

Fig. 10 is a schematic diagram of the structure of the first shielding portion of the heat sink of the radiator in the skin care device shown in Fig. 2;

Fig. 11 is a cross-sectional view of the skin care device shown in Fig. 2, in the direction B-B;

Fig. 12 is a sectional view of the heat sink assembly and the light emitting assembly shown in Fig. 2;

Fig. 13 is another sectional view of the skin care device shown in Fig. 1;

Fig. 14 is a cross-sectional view of the skin care device shown in Fig. 2, in the C-C direction;

Fig. 15 is a partially enlarged view Z of Fig. 14;

Fig. 16 is a schematic diagram of a first printed circuit board assembly of the skin care device shown in Fig. 2;

Fig. 17 is a schematic diagram of a second printed circuit board assembly of the skin care device shown in Fig. 2;

Fig. 18 is a schematic diagram of a third assembly of a third printed circuit board of the skin care device shown in Fig. 2;

Fig. 19 is a schematic diagram of the construction of the IGBT skin care device shown in Fig. 2;

Fig. 20 is a schematic representation of another skin care device shown in Fig. 2;

Fig. 21 is a schematic view of the structure of the skin care device shown in Fig. 1 from another angle;

Fig. 22 is a cross-sectional view of the skin care device shown in Fig. 21 in the direction D-D.

Embodiments of the present invention

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons skilled in the art without creative efforts fall within the protection scope of the present invention.

See Fig. 1 and Fig. 2, Fig. 1 is a schematic diagram of a skin care device provided by an embodiment of the present invention, Fig. 2 is a cross-section of the skin care device shown in Fig. 1 in the direction A-A; embodiments of the present invention provide a skin care device.

Skin care device is a device that corrects and improves the skin condition of the body and face in accordance with the physiological functions of the human body, its functions include whitening, skin rejuvenation, freckle removal, wrinkle removal, hair removal, etc. At the same time, based on optics, the use of light waves of a special length or different types of light to irradiate the skin can achieve various effects. For example, powerful pulsed light, LEDs, lasers, etc. are currently widely used.

For example, a skin care device is a hair removal device or a skin rejuvenation device.

The skin care device may comprise a body 100, a light emitting unit 200, a cold compress unit 300, and a heat dissipation unit 400.

The housing 100 is provided with a light emitting region 11. A light emitting unit 200 is arranged in the housing 100, wherein the light emitting unit 200 is used to generate light emitted from the light emitting region 11 onto the skin to be treated. A cold compress unit 300 is arranged in the light emitting region 11 for a cold compress onto the skin. A cooling unit 400 is used to remove heat on the light emitting unit 200 and/or the cold compress unit 300.

According to the different types of light generated by the light emitting unit 200, the skin care device can be divided into different types. For example, the light emitting unit 200 can be used to generate laser light, which is a component of a laser light source, and the skin care device is a laser skin care device; as another example, the light emitting unit 200 can be used to generate IPL (intense pulsed light) light, which is an IPL light source unit (for example, a xenon lamp unit), the skin care device is an intense pulsed light skin care device, in another example, the light emitting unit 200 is an LED light source unit;

In the present invention, the light emitting unit 200 is mainly used as an IPL light source unit as an example for illustration. The operating principle of this type of skin care device is explained as follows: the capacitor is connected to the power supply, and the transformer unit is driven to charge the capacitor. When the capacitor is charged to a predetermined value and the controller receives a start signal, the electrical energy in the capacitor is released, the instantaneous voltage can reach several hundred volts, which in turn lights the lamp to instantly emit strong pulsed light, which completes the light emission.

In some embodiments, the light-emitting region 11 may be an opening structure, such as a light-emitting port or a light-emitting opening, provided in the housing 100.

Alternatively, the light-emitting region 11 may also be formed by some light-transmitting regions on the body 100. For example, at least a part of the body 100 of the skin care device, such as the head body, may be made of a light-transmitting material, and a local region of the head body is provided with a shading layer to form the light-emitting region 11, in which the head body is not provided with a shading layer. The embodiment of the present invention is not limited to this.

The heat dissipation unit 400 includes a fan 41. The fan 41 is provided with a first ventilation hole 413, and the first ventilation hole 413 is located on the side of the light-emitting unit 200, remote from the light-emitting region 11.

The housing 100 may also be provided with a branching structure 42a, wherein the branching structure 42a is located at the first ventilation hole 413, so that the fan 41 can direct a first part of the air flow through one side of the branching structure 42a and remove heat on the light-emitting unit 200, as a result of which the fan 41 can direct a second part of the air flow through the other side of the branching structure 42a and remove heat on the cold compress unit 300.

For example, in an embodiment of the present invention, the first ventilation hole 413 may be an air outlet, whereby the air blown by the fan 41 can be divided into a first air flow portion and a second air flow portion through the branching structure 42a, so that heat dissipation is respectively performed on the light emitting unit 200 and the cold compress unit 300, as a result of which both the light emitting unit 200 and the cold compress unit 300 are subjected to effective heat dissipation, thereby improving the overall heat dissipation effect of the skin care device. Of course, the first ventilation hole 413 may also be an air inlet of the fan 41, and the embodiment of the present invention is not limited to this.

The fan 41 may be a centrifugal fan, a cross-flow fan, etc., and the embodiment of the present invention is not limited to this.

For example, when the fan 41 is a centrifugal fan, the first ventilation hole 413 may be an air outlet or an air inlet of a scroll chamber, and the first ventilation hole 413 may also be an air outlet of a scroll chamber or a ventilation hole of a duct assembly installed at the location of the air inlet, etc., and the embodiment of the present invention is not limited to this.

When the fan 41 is a centrifugal fan, the width direction of the first ventilation hole 413 may also be the thickness direction of the scroll chamber.

In some embodiments, the fan 41 is also provided with a third ventilation hole 414. One of the first ventilation hole 413 and the third ventilation hole 414 is an air inlet of the fan 41, and the other of the first ventilation hole 413 and the third ventilation hole 414 is an air outlet of the fan 41. Accordingly, the housing 100 is also provided with a fourth ventilation hole 12, wherein the fourth ventilation hole 12 is connected to the outer side of the housing 100 and the third ventilation hole 414, respectively.

In the case where the first ventilation hole 413 is an air outlet hole, the fan 41 first draws air outside the housing 100 through the third ventilation hole 414 and the fourth ventilation hole 12, after which the fan 41 discharges the sucked air from the first ventilation hole 413 and divides the air through the branching structure 42a, thereby providing heat dissipation on the cold compress unit 300 and the light emitting unit 200.

For example, the fourth ventilation opening 12 may include the first air inlet opening 121 of the housing, wherein the first air inlet opening 121 of the housing corresponds to the air inlet opening of the fan 41 (if they face each other).

The fourth ventilation hole 12 may also include a second air inlet hole 122 of the housing, wherein the second air inlet hole 122 of the housing is located at one end of the housing 100 at a distance from the light-emitting region 11.

The above is a general illustration of the technical solutions of the embodiments of the present invention. The technical solution of the embodiment of the present invention will be described below using the example of the additional structure of the branching structure 42a.

It is understood that the branching structure 42a may be part of the heat dissipation unit 400, it may also be part of other parts of the skin care device, and the embodiment of the present invention is not limited to this.

For example, continue to refer to Fig. 3 and Fig. 4, Fig. 3 is a schematic illustration of the installation positions of the light emitting unit, the cold compress unit and the heat dissipation unit of the skin care device shown in Fig. 2, Fig. 4 is a partially enlarged view of a point X in Fig. 2. The heat dissipation unit 400 may also include a temperature control plate 42 and a radiator 43 mounted on the temperature control plate 42. One end of the temperature control plate 42 is thermally connected to the cold compress unit 300; for example, one end of the temperature control plate 42 is directly attached to the cold compress unit 300 or is attached to the cold compress component 300 by means of a heat-conducting medium, such as silicone thermal paste, then the heat in the cold compress unit 300 can be uniformly transferred to different positions of the temperature control plate 42, after which the area of contact with air is increased by means of the radiator 43 to improve the efficiency of heat dissipation on the cold compress unit 300. The other end of the temperature control plate 42 is located at the first ventilation hole 413, forming at least a part of the branching structure 42a. Alternatively, it can be understood as follows: the other end of the thermal control plate 42 is located at the first ventilation hole 413, thus the fan 41 is used to direct the first part of the air flow through the side of the thermal control plate 42 away from the radiator 43 and the light emitting unit 200, therefore, heat dissipation is realized on the light emitting unit 200, and the fan 41 is used to supply the second part of the air flow through the radiator 43 for heat dissipation of the cold compress unit 300.

Since the fan 41 directs the first part of the air flow and the second part of the air flow through different sides of the temperature control plate 42 respectively, the contact area between the temperature control plate 42 and the cooling air flow increases, thus increasing the heat dissipation efficiency of the temperature control plate 42, thereby improving the heat dissipation efficiency of the cold compress unit 300 and, ultimately, improving the overall heat dissipation efficiency of the skin care device.

It is also understood that the temperature control plate 42 forms at least a part of the branching structure 42a, which means that the branching structure 42a can be formed only by the temperature control plate 42, it can also consist of the temperature control plate 42 and its components, and the embodiment of the present invention is not limited to this.

Below, a general description of the structure of the cold compress assembly 300 is first given in order to explain the cooling principle of the cold compress assembly 300 using the temperature control plate 42.

In some embodiments, the cold compress unit 300 is located in the light exit region 11. It may be that the cold compress unit 300 is located in the light emitting region 11, the cold compress unit 300 may also be located on the end surface of the opening of the light emitting region 11.

For example, the cold compress unit 300 may include a first light guide component 31 and a cooling sheet 32. The first light guide component 31 is provided in the light emitting region 11 for transmitting light emitted by the light emitting unit 200. The cooling sheet 32 is thermally connected to the first light guide component 31. For example, the cooling sheet 32 is directly attached to the first light guide component 31 or attached to the first light guide component 31 using a thermally conductive medium, such as silicone thermal paste.

In addition, the first light guide component 31 can be cooled by the cooling sheet 32, and the first light guide component 31 after cooling extends beyond the light emitting region 11, as a result of which it can contact the skin, so that the first light guide component 31 can not only transmit light thanks to the light source 22 for caring for the user's skin, it can also be cooled by the cooling sheet 32 to provide a cold compress for the user.

In particular, the cooling sheet 32 is also known as a semiconductor cooling sheet, which utilizes the Peltier effect of semiconductor materials, when a direct current passes through a galvanic pair formed by two different semiconductor materials connected in series, heat can be absorbed and released at both ends of the galvanic pair, thereby achieving the purpose of cooling.

The first light-guiding component 31 may be made of sapphire or other light-guiding materials, and the embodiment of the present invention is not limited to this.

Alternatively, the cold compress unit 300 may also include a cold compress element (not shown in the drawing) and a cooling sheet 32. The cold compress element is located on one side/periphery of the light emitting region 11. The cooling sheet 32 is thermally connected to the cold compress element. For example, the cooling sheet 32 is directly attached to the cold compress element or attached to the cold compress element using a heat-conducting medium, such as silicone thermal paste. In addition, the cold compress element can be cooled using the cooling sheet 32, wherein the cooled cold compress element is open on one side/surrounding side of the light emitting region 11 and can contact the skin, providing a cold compress for the user.

For example, the cold compress element may be an annular metal part located around the light-emitting region 11, etc.

The thermal connection between the temperature control plate 42 and the cold compress unit 300 may be a thermal connection between the temperature control plate 42 and the cooling sheet 32. For example, the temperature control plate 42 is directly attached to the cooling sheet 32 or attached to the cooling sheet 32 by a heat-conducting medium, such as silicone thermal paste. In this way, the heat from the cooling sheet 32 can be uniformly and quickly transferred to all parts of the temperature control plate 42, after which the temperature control plate 42 increases the contact area with the air through the radiator 43, thereby achieving rapid heat dissipation.

Continuing with the example of combining the heat-control plate 42 to form at least a partial branching structure 42a, the skin care device may also include a bracket unit 500. The bracket unit 500 is located inside the housing 100. The bracket unit 500 and the heat-control plate 42 form a first heat-dissipation channel 51 and a second heat-dissipation channel 52. In this case, the light-emitting unit 200 is at least partially installed in the first heat-dissipation channel 51, as a result of which the first part of the air flow enters the first heat-dissipation channel 51, realizing heat dissipation on the light-emitting unit 200. In this case, the radiator 43 is located in the second heat-dissipation channel 52, as a result of which the second part of the air flow enters the second heat-dissipation channel 52, realizing heat dissipation on the cold compress unit 300. In addition, by dissipating heat on the light emitting unit 200 and the cold compress unit 300, respectively, the heat dissipation effect on the light emitting unit 200 and the cold compress unit 300 can be ensured.

For example, one side of the thermal control plate 42, for example, the side facing away from the radiator 43, and the bracket assembly 500 form a near section of the vent of the first heat dissipation channel 51, wherein the near section of the vent of the first heat dissipation channel 51 is connected to the first vent 413, whereby the fan 41 is used for/can direct a first portion of the air flow through the first heat dissipation channel 51, thereby dissipating heat on the light emitting unit 200. The other side of the thermal control plate 42, for example, the side close to the radiator 43, and the bracket assembly 500 form a near section of the vent of the second heat dissipation channel 52, wherein the near section of the vent of the second heat dissipation channel 52 is connected to the first vent 413, whereby the fan 41 can direct a second portion of the air flow through the second channel 52 heat dissipation, thereby dissipating heat on the cold compress unit 300. In addition, two sides of the thermal control plate are used to form, respectively, a near section of the ventilation hole of the first heat dissipation channel 51 and a near section of the ventilation hole of the second heat dissipation channel 52, which allows the first part of the air flow to dissipate heat on the light emitting unit 200, the thermal control plate 42 can also be used for heat dissipation, in order to reuse the heat sink on the cold compress unit 300.

In some embodiments, the bracket assembly 500 may be provided with corresponding slots and stiffening ribs, etc. for mounting the light emitting assembly 200, the cold compress assembly 300 and at least a portion of the heat sink assembly 400.

In some embodiments, the inner wall of the first heat-dissipating channel 51 may be provided with a light-emitting portion 53. The light-emitting portion 53 is located between the light-emitting unit 200 and the light-emitting region 11 of the housing 100. The light-emitting portion 53 is used to transmit light generated by the light-emitting unit 200 to the light-emitting region 11.

For example, the light-emitting portion 53 may be a through hole, and the cold compress assembly 300, for example, the first light-guide component 31 of the cold compress assembly 300, passes through the light-emitting portion 53, thereby covering the light-emitting portion 53.

Alternatively, the light-emitting portion 53 may be a second light-guiding component. The second light-guiding component is located on the side of the inner wall of the first heat-dissipating channel 51 facing the light-emitting region 11.

The second light guide component may be a heat-insulating light-transmitting element, which makes it possible to avoid direct transmission of heat generated by the light emitting unit 200 to the cold compress unit 300. Of course, the second light guide component may not be a heat-insulating light-transmitting element, and the embodiment of the present invention is not limited to this.

Or the second light guide component is a filter.

The bracket assembly 500 may also include a light filtering component 54. The light filtering component 54 may include a light filter. The light filtering component 54 is used to transmit light with a wavelength of 560 to 1200 nanometers, thereby forming IPL (intense pulsed light) in a certain wavelength range to emit light to the user's skin. In actual use, the wavelength of light required for hair removal may be 560 to 1200 nanometers, and the wavelength of light required for skin rejuvenation may be 640 to 1200 nanometers. This allows the skin care device to perform both the functions of a cold compress and the functions of skin rejuvenation or hair removal. Of course, other functions can also be performed by adjusting the light emitting unit 200 or the light emitting unit 200 and the light filter.

In some embodiments, the type of light filter is adjustable, and the second light guide element, the light filtering component 54 and the first light guide component 31 can be arranged sequentially in a direction remote from the light emitting unit 200. This allows the skin care device to perform three functions simultaneously: cold compress, skin rejuvenation and hair removal.

In some embodiments, the skin care device also includes, for example, a bracket assembly 500. The bracket assembly 500 is located in the housing 100, wherein the bracket assembly 500 and the temperature control plate 42 form a first heat dissipation channel 51 for a first portion of the air flow. In this case, the light emitting unit 200 is at least partially located in the first heat dissipation channel 51, as a result of which the first portion of the air flow passes through the light emitting unit 200 of the heat dissipation on the light emitting unit 200. The bracket assembly 500 may also include an insulating element 55. The insulating element 55 separates the light emitting unit 200 from the temperature control plate 42.

It is understood that the temperature control plate 42 may include a copper alloy temperature control plate, a VC (Vapor Chamber, Vacuum Chamber Heating Plate Heat Dissipation Technology) temperature control plate, a stainless steel temperature control plate, a graphene heating panel, etc., and the embodiment of the present invention is not limited to these. The temperature control plate 42 is usually electrically conductive. Thanks to the insulating member 55, the temperature control plate 42 can be installed closer to the light emitting unit 200, thereby making the skin care device thinner as a whole, which also avoids leakage caused by the fact that the light emitting unit 200 and the temperature control plate 42 are located too close, thereby improving the reliability and safety of the skin care device.

The insulating portion 55 may be made of an insulating material such as plastic, rubber, ceramic, or even an insulating layer, etc., and the embodiment of the present invention is not limited to this.

In some embodiments, along the light emitting unit 200 in the direction of the first ventilation hole 413, the insulating portion 55 is shorter than the temperature control plate 42 and rests on the temperature control plate 42. In addition, due to the short insulating portion 55, on the one hand, the complexity of manufacturing the bracket unit 500 can be reduced, the cost of manufacturing the bracket unit 500 can be reduced, and the overall weight of the skin care device can be reduced; on the other hand, the number of positions of the temperature control plate 42 can be increased, thus, the contact area between the temperature control plate 42 and the first part of the air flow increases, thereby improving the heat dissipation efficiency on the temperature control plate 42 and, ultimately, improving the heat dissipation effect on the cold compress unit 300.

In some embodiments, the side surface of the temperature control plate 42 facing one side of the light-emitting unit 200 includes a shielding region 422 and an open region 423. The insulating portion 55 rests on the shielding region 422. In this case, the minimum distance between the open region 423 and the light-emitting unit 200 is greater than or equal to 6 millimeters, which prevents too close a location between the temperature control plate 42 and the light-emitting unit 200 and the occurrence of a current leak.

For example, the minimum distance between the open region 423 and the light emitting unit 200 may be 6 mm, 6.1 mm, 6.7 mm, 7.4 mm, 8 mm or 9 mm, etc., and the embodiment of the present invention is not limited to this.

In some embodiments, the side surface of the thermal control plate 42 facing one side of the light-emitting unit 200 includes a shielding region 422 and an open region 423. The insulating portion 55 rests on the shielding region 422. Here, the open region 423 is a flat region for flow diversion and heat dissipation. It is understood that, since the open region 423 also forms the inner wall of the first heat dissipation channel 51, compared with the open region 423, which is uneven, the open region 423 is a flat region, which makes it possible to effectively reduce the wind resistance when the first part of the air flow flows in the first heat dissipation channel 51.

In particular, it may be that the minimum distance between the open region 423 and the light-emitting unit 200 is greater than or equal to 6 mm, and the open region 423 is a flat region, it may also be that the minimum distance between the open region 423 and the light-emitting unit 200 is less than 6 mm, and the open region 423 is a flat region, it is also possible that the minimum distance between the open region 423 and the light-emitting unit 200 is less than 6 mm, and the surface of the open region 423 has a concave and convex structure, and the embodiment of the present invention is not limited to this.

Below, we will continue to consider the branching structure 42a, at least partially formed by some other parts of the skin care device, as an example for further illustration.

As an example, continue to refer to Fig. 5, Fig. 5 is a schematic illustration of another branching structure at point X in Fig. 2. The skin care device also includes a bracket assembly 500. The bracket assembly 500 is located inside the housing 100. The bracket assembly 500 is used to form a first heat dissipation channel 51 and a second heat dissipation channel 52. The first heat dissipation channel 51 is used for the first part of the air flow for dissipating heat on the light emitting unit 200, and the second heat dissipation channel 52 is used for the second part of the air flow for dissipating heat on the cold compress unit 300. In this case, one end of the bracket unit 500 near the first ventilation hole 413 is provided with a branching portion 56 to form a branching structure 42a, thereby cutting off the first heat dissipation channel 51 connected to the ventilation hole of the fan 41 and the second heat dissipation channel 52 connected to the ventilation hole of the fan 41. Finally, due to the heat dissipation on the light emitting unit 200 and the cold compress unit 300, respectively, the heat dissipation effect on the light emitting unit 200 and the cold compress unit 300 can be guaranteed.

As an example, the light-emitting unit 200 is at least partially located in the first heat-dissipating channel 51. Thus, after the first portion of the air flow enters the first heat-dissipating channel 51, heat dissipation can be implemented on the light-emitting unit 200.

The heat dissipation unit 400 may also include a temperature control plate 42 and a radiator 43 mounted on the temperature control plate 42. One end of the temperature control plate 42 is thermally connected to the cold compress unit 300. The temperature control plate 42 and the radiator 43 are at least partially located in the second heat dissipation channel 52; therefore, after the second part of the air flow enters the second heat dissipation channel 52, heat dissipation can be implemented on the temperature control plate 42 and the radiator 43, as a result of which heat dissipation is achieved on the cold compress unit 300.

In some embodiments, the light emitting unit 200 extends along the length direction of the first ventilation hole 413. Then, using the first ventilation hole 413 as an air outlet of the fan 41 as an example, it can be achieved that the first part of the air flow coming out of the first ventilation channel 413 can be directly directed to a larger number of parts in the length direction of the light emitting unit 200 to improve the heat dissipation effect, and at the same time, this also makes it possible to make the internal structure of the skin care device simpler and more compact.

In some embodiments, the first part of the air flow and the second part of the air flow may exit from the first ventilation hole 413 in different regions in the width direction. In other words, the near section of the ventilation hole of the first heat dissipation channel 51 (if the first ventilation hole 413 is an air outlet, then the near section of the ventilation hole of the first heat dissipation channel 51 is its inlet section) and the near section of the ventilation hole of the second heat dissipation channel 52 (if the first ventilation hole 413 is an air outlet, then the near section of the ventilation hole of the second heat dissipation channel 52 is its inlet section) are respectively connected to different regions of the first ventilation hole 413 in the width direction.

For example, the length of the light-emitting unit 200 can be set along the left and right directions, and the length direction of the first ventilation hole 413 can also be set along the left and right directions. The inlet of the first heat dissipation channel 51 is connected to the lower half of the first ventilation hole 413, and the inlet of the second heat dissipation channel 52 is connected to the upper half of the first ventilation hole 413.

Continue to refer to Fig. 6, Fig. 6 is another cross-sectional view of the skin care device shown in Fig. 1, in the direction A-A; The first heat dissipation channel 51 includes a mounting section 511 and a deflector section 512 distributed along the light emitting unit 200 in the direction of the ventilation hole 413. The light emitting unit 200 is at least partially installed in the mounting section 511. One end of the deflector section 512 is located on the first ventilation hole 413 for communicating with the first ventilation hole 413, and the other end communicates with the mounting section 511. In this way, communication is realized between the first heat dissipation channel 51 and the fan 41, for example, the first part of the air flow coming out of the first ventilation hole 413 can enter directly into the mounting section 511 through the deflector section 512 for heat dissipation on the light emitting unit 200.

It is clear that the near section of the ventilation opening of the first heat dissipation channel 51 is made in the deflector section 512.

It should be noted here that the light emitting unit 200 is at least partially installed in the mounting section 511, and the light emitting unit 200 may be completely installed in the mounting section 511. The light emitting unit 200 is at least partially installed in the mounting section 511, or it may be in the mounting section 511, where the light emitting unit 200 is only partially installed. For example, both ends of the light emitting unit 200 pass through the inner wall of the mounting section 511, due to which the light emitting unit 200 is partially located outside the mounting section 511; or the light emitting unit 200 partially protrudes into the deflector section 512, and the embodiment of the present invention is not limited to this.

In some embodiments, in the direction from the first ventilation hole 413 to the light-emitting unit 200, the cross-sectional area of at least a portion of the area of the deflector section 512 gradually increases.

Then, the deflector section 512 can form a diffusion structure. When a part of the air flow from the first ventilation hole 413 flows into the deflector section 512, since the cross-sectional area of the partial area in the deflector section 512 gradually increases along the air direction, then, compared with the fact that the cross-sectional area of the deflector section 512 is constant or gradually decreases in the air direction, the air resistance of the air flowing in the deflector section 512 will be smaller, thus, a larger amount of air coming out of the first ventilation hole 413 can smoothly enter the deflector section 512, thereby improving the heat dissipation effect on the light emitting unit 200.

In some embodiments, the width of the deflector section 512 in the direction of the width of the first ventilation hole 413 gradually increases. In turn, on the one hand, this contributes to a gradual increase in the cross-sectional area of the deflector section 512 along the air flow direction, on the other hand, the contact area between the first part of the air flow and the light-emitting unit 200 can be increased. In turn, the heat-dissipation effect of the first part of the air on the light-emitting unit 200 can be improved.

In some embodiments, the inner wall of the deflector section 512 includes a first inner side wall 513 facing the branching structure 42a and a second inner side wall 514 located opposite the first inner side wall 513. Along the direction of the first ventilation opening 413 to the light-emitting unit 200, at least one of the first inner side wall 513 and the second inner side wall 514 is inclined in the opposite direction, as a result of which the distance between the first inner side wall 513 and the second inner side wall 514 gradually increases.

In particular, the first inner side wall 513 and the second inner side wall 514 may be inclined in a direction opposite to each other, or one of the first inner side wall 513 and the second inner side wall 514 may be inclined in a direction opposite to the other, and the embodiment of the present invention is not limited to this.

It is also understood that the second inner side wall 514 may be formed by the above-described branching structure 42a, for example, the thermal control plate 42 and/or the branching portion 56 of the bracket assembly 500, and the second inner side wall 514 may also be formed by the branching structure 42a and other components, and the embodiment of the present invention is not limited to this.

In some embodiments, in the direction from the first inner side wall 513 to the second inner side wall 514, the width of the deflector section 512 near one end of the light emitting unit 200 is greater than or equal to the width of the light emitting unit 200. Thus, the surface of one side of the light emitting unit 200 facing the first ventilation hole 413 can be directly blown by the first part of the air flow coming out of the fan 41, to increase the heat dissipation area and, thus, improve the heat dissipation effect of the light emitting unit 200.

Continue referring to Fig. 6 and Fig. 7, Fig. 7 is a partial enlarged view of point Y in Fig. 6. The deflector section 512 is provided with a first anti-turbulent structure 515 for limiting the formation of interference in the deflector section 512. Thus, the first part of the air flow can flow more smoothly from the deflector section 512 to the mounting section 511 for heat dissipation, or the flow velocity of the first part of the air flow in the deflector section 512 can be increased to improve the heat dissipation effect.

For example, the light emitting unit 200 includes a reflective component 21 and a light source 22 located in the reflective component 21.

The outer wall of the reflecting component 21 includes a first curved surface that projects laterally in the direction of the deflector section 512. The first anti-turbulent structure 515 is used to limit the turbulence formed between the first curved surface and the inner wall of the deflector section 512.

In particular, when the first part of the air flow blows onto the light emitting unit 200, it will be blocked by the first curved surface and partially returned to the deflector section 512. At this time, the first anti-turbulence structure 515 can prevent the air flow blocked by the first curved surface from returning to the deflector section 512, as well as the air flow flowing into the deflector section 512 from the fan 41, with the formation of turbulence, thus, the first part of the air flow flows more smoothly in the first heat dissipation channel 51, which improves the flow rate and the heat dissipation effect of the first part of the air flow.

In one embodiment, the light source 22 may include a lamp. The reflective component 21 includes an arcuate portion 211 located around the lamp. The arcuate portion 211 is at least partially located on the side of the lamp near the deflector portion 512. In this case, one end of the arcuate portion 211 in the circumferential direction adjoins the first inner side wall 513, and the other end of the arcuate portion 211 in the circumferential direction adjoins the second inner side wall 514. The first inner side wall 513 and/or the second inner side wall 514 are provided with a first anti-turbulent structure 515.

Thus, the first anti-turbulence structure 515 can limit the formation of turbulence from the air flow returning from the outer surface of the arcuate portion 211 to the first inner side wall 513 and/or to the second inner side wall 514.

In particular, it may be that only the first inner side wall 513 is provided with the first anti-turbulent structure 515, it may be that only the second inner side wall 514 is provided with the first anti-turbulent structure 515, it may also be that the first inner side wall 513 and the second inner side wall 514 are provided with the first anti-turbulent structure 515, and the embodiment of the present invention is not limited to this.

In some embodiments, the first anti-turbulence structure 515 may be formed integrally with the corresponding first inner side wall 513 or the second inner side wall 514. Of course, the first anti-turbulence structure 515 may also be formed separately from the corresponding first inner side wall 513 or the second inner side wall 514, for example, the first anti-turbulence structure 515 may be detachably connected to the first inner side wall 513 or the second inner side wall 514. This embodiment of the present invention is not limited to this.

In some embodiments, the first anti-turbulence structure 515 includes a deflector. The deflector extends along the first ventilation opening 413 in the direction of the light-emitting unit 200, therefore, the first inner side wall 513 and/or the second inner side wall 514, provided with the deflector, can direct the air passing through the deflector, limiting the formation of turbulence at the first inner side wall 513 and/or the second inner side wall 514.

One or more deflector may be provided. For example, the first anti-turbulence structure 515 may include several deflectors, wherein the several deflectors are arranged at intervals along the length direction of the light-emitting unit 200, for example, the length direction of the lamp.

In some embodiments, the first anti-turbulence structure 515 includes a deflector. The deflector includes a first bevel 5151 and a second bevel 5152, located relative to each other in the thickness direction. Along the direction of the first ventilation hole 413 to the light-emitting unit 200, the first bevel 5151 and the second bevel 5152 are inclined in the direction opposite to the direction from each other, due to which the thickness of the deflector near one end of the light-emitting unit 200 is greater than the thickness of the end of the deflector located at a distance from the light-emitting unit 200. Then it can also be simply understood that the side of the deflector facing the first ventilation hole 413 is sharper, due to which a windproof structure is formed for reducing the wind resistance that occurs when the first part of the air enters through the deflector, which improves the heat dissipation effect.

In some embodiments, the inner side wall of the deflector section 512 includes a first deflector surface connected to the deflector. The deflector also includes a third bevel 5153. The third bevel 5153 is located on the side of the deflector, remote from the first deflector surface. In this case, along the direction of the first ventilation opening 413 to the light-emitting unit 200, the third bevel 5153 is inclined away from the first deflector surface, therefore, the height of the end of the deflector near the light-emitting unit 200, protruding from the first deflector surface, is greater than the height of the end of the deflector remote from the light-emitting unit 200, protruding from the first deflector surface. Then, it can also be simply understood that the side of the deflector facing the first ventilation hole 413 is sharper, thereby forming a windproof structure to reduce the wind resistance that occurs when the first part of the air enters through the deflector, which improves the heat dissipation effect.

In some embodiments, the heat dissipation assembly 400 also includes a temperature control plate 42 and a radiator 43 mounted on the temperature control plate 42. One end of the temperature control plate 42 is thermally connected to the cold compress assembly 300. Both the temperature control plate 42 and the radiator 43 are at least partially located in the second heat dissipation channel 52. In this case, one end of the thermal control plate 42, located near the first ventilation hole 413, is deflected to the side close to the place where the light-emitting unit 200 is located, with the formation of a deflectable section 421. The deflectable section 421 reaches the first ventilation hole 413, as a result of which the deflectable section 421 is located near the side of the light-emitting unit 200 and the bracket unit 500, forming at least a part of the deflector section 512, wherein the side of the deflectable section 421 facing away from the light-emitting unit 200 and the bracket unit 500 form an input section of the second heat-dissipation channel 52. In other words, the deflectable section 421 reaches the first ventilation hole 413, as a result of which the deflectable section 421 is located near the side of the light-emitting unit 200 and the bracket unit 500, forming at least a part of the deflector section 512, and the side of the deflectable section 421 facing away from the light-emitting unit 200 and the bracket unit 500 form a near section of the ventilation hole of the second heat dissipation channel 52.

For example, the light-emitting unit 200 can be located below the temperature control plate 42, that is, the lower surface of the temperature control plate 42 forms the upper side wall of the inner wall of the first heat dissipation channel 51. In addition, one end of the temperature control plate 42 near the first ventilation hole 413 is deflected downward, therefore, the deflectable section 421 of the temperature control plate 42 forms at least a part of the second inner side wall 514 of the deflector section 512, thereby simplifying the structure of the bracket unit 500 and reducing the complexity of forming the bracket unit 500.

Continue referring to Fig. 8, Fig. 8 is another schematic illustration of a partial enlarged view of point X in Fig. 2. In some embodiments, the radiator 43 may include a near heat sink section 431 and a far heat sink section 432. The near heat sink section 431 is installed in the deflectable section 421. The far heat sink section 432 is connected to the end of the near heat sink section 431 near the light emitting region 11. Here, the width of the near heat sink section 431 is larger than the width of the far heat sink section 432, and the width of the radiator 43 is the distance from the side of the radiator 43 close to the thermal control plate 42 to the side remote from the thermal control plate 42.

In this case, the radiator 43 includes a connecting side 433 installed on the temperature control plate 42 and a free side 434 located away from the temperature control plate 42, and the width of the radiator 43 is the distance from the connecting side 433 to the free side 434 of the radiator 43.

Then, in combination with the fact that the deflectable section 421 is deflected downward, the space formed by the deflectable section 421 can be rationally used, as a result of which the near heat dissipation section 431 can be increased, thereby increasing the contact area between the radiator 43 and the air, at the same time, this can also ensure a more compact overall structure of the skin care device and a smaller volume.

For example, the radiator 43 includes a connecting side 433 installed on the thermal control plate 42 and a free side 434 remote from the thermal control plate 42. At the same time, along the direction of the light emitting unit 200 to the first ventilation hole 413, the connecting side 433 and the free side 434 of the near section 431 of the heat sink are inclined in a direction opposite to each other, due to which the width of the near section 431 of the heat sink gradually increases.

In some embodiments, the housing 100 includes a light-emitting section extending from the junction of the near section 431 of the heat sink and the far section 432 of the heat sink to the light-emitting region 11. In this case, along the direction of the light-emitting unit 200 to the light-emitting region 11, the cross-sectional area of the light-emitting section gradually decreases. This makes the end surface of the housing on one side of the light-emitting region 11 smaller, facilitating the user to accurately fit the light-emitting region 11 to the user's skin to be treated. Accordingly, the height of the far section 432 of the heat sink protruding from the temperature control plate 42 is smaller, and the height of the near section 431 of the heat sink protruding from the temperature control plate 42 is correspondingly greater than the height of the far section 432 of the heat sink protruding from the temperature control plate 42.

In some embodiments, several radiators 43 are provided. The radiator 43 includes a connecting side 433 mounted on the thermal control plate 42, and a free side 434 remote from the thermal control plate 42. The free sides 434 of several radiators 43 form free surfaces, and the free surfaces include a wind protection region 435 near the first ventilation opening 413 and a circulation region 436 near the cold compress unit 300. In this case, the heat dissipation unit 400 also includes a shielding part 44, wherein the shielding part 44 is shielded by the wind protection region 435, and the wind between adjacent radiators 43 flows out or in from the circulation region 436 near the cold compress unit 300.

Then, it is possible to direct the air flow in the second heat dissipation channel 52 to pass near the location of the cold compress unit 300, thereby improving the heat dissipation effect on the cold compress unit 300. In addition, in combination with the deflecting section 421, one end close to the first ventilation hole 413 is deflected downward, and by installing the shielding portion 44, it is possible to more effectively prevent the deflecting section 421 from directly directing the air coming from the first ventilation hole 413 near the near section 431 of the heat dissipation.

In some embodiments, the shielding portion 44 covers at least the free side 434 of the near section 431 of the heat sink. Therefore, when the shielding portion 44 is installed, it is possible to prevent the air coming from the first ventilation hole 413 from being directed directly by the deflected section 421 near the near section 431 of the heat sink.

In some embodiments, along the first ventilation hole 413 in the direction of the light-emitting unit 200, the length of the shielding portion 44 is more than one third of the length of the radiator 43. Thus, the air flow between adjacent radiators 43 can be directed outward from the circulation region 436 near the cold compress unit 300.

Continue referring to Fig. 9, Fig. 9 is a schematic illustration of the structure of the first shielding portion of the radiator in the skin care device shown in Fig. 2. In some embodiments, the shielding portion 44 may include a windshield 441, wherein the windshield 441 covers the free sides 434 of several radiators 43.

Continue referring to Fig. 10, Fig. 10 is a schematic illustration of the structure of the first shielding part of the radiator in the skin care device shown in Fig. 2. In some embodiments, the shielding part 44 may include several folds 442, and each of the folds 442 is folded back and connected to the free side 434 of one of the radiators 43. Thus, during the manufacturing process, the fold 442 can be formed directly on the free side 434 of the radiator 43 by bending or turning, which simplifies the manufacturing of the radiator 43 and the shielding part 44 and reduces the cost.

In particular, the shielding portion 44 may comprise only one of the windshields 441 and the fold 442, and the shielding portion 44 may also include both the windshield 441 and the fold 442, the embodiment of the present invention is not limited to this.

The housing 100 is also provided with a second ventilation hole 13 connected to the outer side of the housing 100, wherein the second ventilation hole 13 is located on the side of the radiator 43 away from the thermal control plate 42. The second ventilation hole 13 is located in accordance with the shielding part 44, wherein the second ventilation hole 13 is connected to the circulation region 436.

Thus, taking the first vent 413 as an example as the air outlet of the fan 41, the second part of the air flow coming out of the first vent 413 can be discharged directly from the second vent 13 after passing through the radiator 43, as a result of which the heat dissipation path of the second heat dissipation channel 52 is shorter and the flow rate is higher. On the other hand, since the second vent 13 is installed in accordance with the shielding portion 44, this means that the second vent 13 is also located further from the light emitting region 11, which makes it possible to avoid direct contact of the hot air coming out of the second vent 13 directly onto the skin being treated near the light emitting region 11, which in turn makes it possible to improve the usability of the skin care device.

In some embodiments, the side of the radiator 43 remote from the thermal control plate 42 is provided with a second anti-turbulence structure 45, which is used to limit the distance of the radiator 43 from the side of the thermal control plate 42 to form turbulence.

For example, the second anti-turbulence structure 45 is located in the circulation region 436 to limit the formation of turbulence by air leaving the circulation region 436.

It is understood that, since the height of the radiator 43 gradually decreases from the near heat dissipation section 431 to the far heat dissipation section 432, or the space between the radiators 43 gradually decreases, and the shielding portion 44 causes the second part of the air flow to enter the far heat dissipation section 432 before it can be discharged outside, the circulation region 436 in the far heat dissipation section 432 is prone to turbulence. At this time, by using the second anti-turbulence structure 45, the air flow discharged from the circulation region 436 can flow more smoothly, which improves the heat dissipation effect.

In some embodiments, each radiator 43 is provided with a second anti-turbulent structure 45, therefore, in order to improve the heat dissipation effect, more second anti-turbulent structures 45 can be provided. Of course, in some other embodiments, it may be that only one or part of the radiator 43 can be provided with a second anti-turbulent structure 45, and the embodiment of the present invention is not limited to this.

In some embodiments, the second anti-turbulent structure 45 may comprise a plurality of toothed portions protruding from the side of the radiator 43 toward the thermal control plate 42. In addition, compared to the side of the radiator 43 remote from the thermal control plate 42, which is flat, the toothed portions can effectively limit the formation of turbulence in the circulation region 436.

In some embodiments, the second anti-turbulence structure 45 may comprise a plurality of toothed parts, wherein the toothed parts have a triangular shape. Of course, in some other embodiments, the toothed parts may also have other shapes, and the embodiment of the present invention is not limited to this.

In some embodiments, the second anti-turbulent structure 45 may be made integral with the radiator 43. Of course, the second anti-turbulent structure 45 may also be made separately from the radiator 43, for example, the second anti-turbulent structure 45 may be detachably connected to the radiator 43. This embodiment of the present invention is not limited to this.

In some embodiments, the housing 100 is also provided with a second ventilation hole 13 connected to the outer side of the housing 100, wherein the second ventilation hole 13 is located on the side of the radiator 43 away from the thermal control plate 42. One end of the first heat-dissipation channel 51, located at a distance from the first ventilation hole 413, is connected to the second ventilation hole 13 connected to the outer side of the housing 100. The second end of the first heat-dissipation channel 52, located at a distance from the first ventilation hole 413, is connected to the second ventilation hole 13 connected to the outer side of the housing 100.

Continue referring to Fig. 11 and Fig. 12, Fig. 11 is a cross-section of the skin care device shown in Fig. 2 in the direction B-B, and Fig. 12 is a sectional view of the heat sink unit and the light emitting unit shown in Fig. 2. In some embodiments, the housing 100 is also provided with a second ventilation hole 13, which is connected to the outer part of the housing 100. The second ventilation hole 13 is located on the side of the radiator 43 remote from the thermal control plate 42. The inner wall of the housing 100 also has a third heat dissipation channel 57. One end of the third heat-sink channel 57 is connected to the end of the first heat-sink channel 51, located at a distance from the first ventilation opening 413, the other end of the third heat-sink channel 57 and the end of the second heat-sink channel 52, located at a distance from the first ventilation opening 413, are connected to the second ventilation opening 13 and form a Bernoulli structure at the junction.

Then, take the first ventilation hole 413 as an example as the air outlet of the fan 41. When the fan 41 operates, the pressure at the outlet of the first air outlet with a higher flow rate in the third heat dissipation channel 57 and the second heat dissipation channel 52 will be smaller, so that the air in the second channel is discharged or sucked out to increase the flow rate in the second channel, thereby improving the overall heat dissipation effect of the skin care device.

For example, it may happen that when the fan 41 is operating, the air flow rate in the second heat-sink channel 52 will be greater than the air flow rate in the third heat-sink channel 57. Thus, the air in the second heat-sink channel 52 removes the air in the third heat-sink channel 57, and in turn, the air in the second heat-sink channel 52 indirectly removes the air from the first heat-sink channel 51.

In some embodiments, the outlet of the third heat-dissipating channel 57, located near one end of the second ventilation opening 13, is provided on the inner wall of the outlet end of the second heat-dissipating channel 52, which facilitates that the air in the second heat-dissipating channel 52 removes air from the third heat-dissipating channel 57.

In some embodiments, the second heat dissipation channel 52 extends from the first ventilation opening 413 to the second ventilation opening 13. The radiator 43 is located in the second heat dissipation channel 52, and both the first ventilation opening 413 and the second ventilation opening 13 are adjacent to the radiator 43, which makes the second heat dissipation channel 52 shorter. The first heat dissipation channel 51 is located on the side of the thermal control plate 42, remote from the second ventilation opening 13, so that the total length of the path of the first part of the air flow in the first heat dissipation channel 51 and the third heat dissipation channel 57 is greater than the total length of the path of the second part of the air flow in the second heat dissipation channel 52.

Continue to refer to Fig. 13, Fig. 13 is another sectional view of the skin care device shown in Fig. 1. The third heat dissipation channel 57 may include a diffusion chamber 571 and a connecting section 572. The diffusion chamber 571 is connected to the mounting section 511 through the mounting hole 516 (that is, the diffusion chamber 571 is connected to the mounting section 511 through the gap vent hole 212 and the end vent hole 214 described below), and one end of the diffusion chamber 571 extends in a direction from the light emitting region 11. The connecting section 572 is located on the side of the diffusion chamber 571 near the second vent hole 13. One end of the connecting section 572 is connected to the end of the diffusion chamber 571 remote from the light emitting region 11, and the other end of the connecting section 572 is connected to the inner wall of one end of the second heat dissipation channel 52 near the second ventilation hole 13, thus the first heat dissipation channel 51 and the second heat dissipation channel 52 are connected to the second ventilation hole 13 and form a Bernoulli structure at the junction.

In this way, by installing the diffusion chamber 571, the air after blowing through the lamp and the reflective component 21 can penetrate into a larger space after passing the mounting hole 516 (i.e., the clearance vent hole 212 and the end vent hole 214 described below), and in order to reduce the air resistance, the air after blowing through the lamp and the reflective component 21 enters the diffusion cavity 571 more smoothly through the clearance vent hole 212 and the end vent hole 214, which in turn improves the heat dissipation efficiency.

In some embodiments, in the direction from the light emitting region 11, the cross-sectional area of the diffusion chamber 571 may gradually decrease, as a result of which the air flow rate in the diffusion chamber 571 increases, which improves the heat dissipation effect on the light emitting unit 200.

Accordingly, the printed circuit board 61 may form a part of the inner wall of the diffusion chamber 571 or be partially placed in the diffusion chamber 571, due to which the conductive bracket 62 can be placed in the diffusion chamber 571.

Therefore, since the total length of the first part of the air flow flowing in the first heat-dissipation channel 51 and the second heat-dissipation channel 52 is greater, the flow speed of the first part of the air flow will be less, therefore, the air in the second heat-dissipation channel 52 removes the air from the third heat-dissipation channel 57, and finally, the air in the second heat-dissipation channel 52 indirectly removes the air in the first heat-dissipation channel 51.

Of course, in combination with the second heat dissipation channel 52, the height of the radiator 43 gradually decreases from the near heat dissipation section 431 to the far heat dissipation section 432, then, when the volume of the intake air of the second heat dissipation channel 52 is constant, the speed of the air at the outlet of the second heat dissipation channel 52 will be correspondingly higher, therefore, the air in the second heat dissipation channel 52 discharges the air from the third heat dissipation channel 57, and finally, the air in the second heat dissipation channel 52 indirectly discharges the air in the first heat dissipation channel 51.

In some embodiments, the volume of intake air at the entrance to the first heat-dissipation channel 51 is less than the volume of intake air at the entrance to the second heat-dissipation channel 52, in other words, the volume of intake air at one end of the first heat-dissipation channel 51 connected to the first ventilation opening 413 is less than the volume of intake air at the end connected to the second heat-dissipation channel 52 and the first ventilation opening 413, therefore, the speed of air at the exit from the second heat-dissipation channel 52 can be greater, and then the air in the second heat-dissipation channel 52 discharges air into the third heat-dissipation channel 57, finally, the air in the second heat-dissipation channel 52 indirectly discharges air from the first heat-dissipation channel 51.

More importantly, in order to ensure the cold compress effect of the cold compress assembly 300 and achieve the cold compress effect at the freezing temperature, the heat generated by the cooling sheet 32 must be dissipated in a timely and rapid manner, which requires ensuring that the second heat dissipation passage 52 has a sufficient air volume and air speed so that it can pass through the radiator 43 and the temperature control plate 42 in a timely and rapid manner to dissipate the heat generated by the cooling sheet 32. In other words, in the present invention, the air volume of the fan is reasonably distributed, which makes the volume of the intake air at the entrance of the first heat dissipation passage 51 smaller than the volume of the intake air at the entrance of the second heat dissipation passage 52, so that the heat generated by the cooling sheet 32 can be dissipated in a timely and rapid manner through the radiator 43 and the temperature control plate 42, thereby improving the cold compress effect of the cold compress assembly 300 and achieving the cold compress effect compress at freezing temperature, for example, the temperature of the cold compress of the 300 cold compress node can be quickly reduced to zero degrees or below zero degrees (for example, minus 5 degrees, etc.).

For example, one end of the first heat-dissipating channel 51 near the first ventilation hole 413 is an air inlet of the first heat-dissipating channel 51, and one end of the second heat-dissipating channel 52 near the first ventilation hole 413 is an air inlet of the second heat-dissipating channel 52; wherein, the area of the corresponding area of the first ventilation hole 413 and the air inlet of the first heat-dissipating channel 51 is smaller than the area of the corresponding area of the first ventilation hole 413 and the air inlet of the second heat-dissipating channel 52, therefore, the volume of the inlet air at the entrance to the first heat-dissipating channel 51 is smaller than the volume of the inlet air at the entrance to the second heat-dissipating channel 52.

In particular, the first ventilation opening 413 includes a first side 411 located near the first heat-dissipation channel 51 and a second side 412 located near the second heat-dissipation channel 52, wherein the first side 411 and the second side 412 are located relative to each other. In this case, the distance from the branching structure 42a to the first side 411 is less than the distance to the second side 412, or the distance from one end of the deflectable section 421 near the first ventilation opening 413 to the first side 411 is less than the distance to the second side 412, therefore, the volume of the intake air at the entrance to the first heat-dissipation channel 51 is less than the volume of the intake air at the entrance to the second heat-dissipation channel 52.

Continue referring to Fig. 12 to Fig. 15, Fig. 14 is a cross-sectional view of the skin care device shown in Fig. 2 in the C-C direction, Fig. 15 is a partially enlarged Z view of Fig. 14. In some embodiments, the inner wall of the first heat dissipation channel 51 is provided with a mounting hole 516. The light emitting unit 200 is installed in the first heat dissipation channel 51 through the mounting hole 516 and forms a clearance ventilation hole 212 for with the inner wall of the mounting hole 516. The light emitting unit 200 includes a reflective component 21 and a light source 22. The light source 22 is located in the reflective component 21. The side ventilation holes 213 are provided on the peripheral side of the reflective component 21, wherein the side ventilation holes 213 are connected to the first heat dissipation channel 51, and the end portion of the reflective component 21 is also provided with end ventilation holes 214.

Thus, if the first ventilation hole 413 is taken as an example as the air outlet of the fan 41, part of the air flow in the first heat dissipation channel 51 can be blown directly onto the surface of the reflective component 21, and another part can be blown into the reflective component 21 in order to increase the heat dissipation area of the light emitting unit 200, thereby improving the heat dissipation effect on the light emitting unit 200.

In some embodiments, the mounting hole 516 is connected to the third heat-dissipation channel 57 near the end of the first heat-dissipation channel 51, and one end of the third heat-dissipation channel 57, located at a distance from the first heat-dissipation channel 51, is connected to the end of the second heat-dissipation channel 52, located at a distance from the first ventilation hole 413. The end ventilation hole 214 is connected to the mounting hole 516 or the third heat-dissipation channel 57.

Thus, if we take the first ventilation hole 413 as an example as the air outlet hole of the fan 41, then a part of the air flow in the first heat dissipation channel 51 is blown directly onto the surface of the reflective component 21 and then sequentially discharged through the gap ventilation hole 212, the third heat dissipation channel, the outlet end of the second heat dissipation channel and the second ventilation hole 13; another part of the air flow from the first heat dissipation channel 51 is directly blown into the reflective component 21 through the side ventilation holes 213, and then sequentially discharged through the end air hole 214, the third heat dissipation channel 57, the outlet end of the second heat dissipation channel 52 and the second ventilation hole 13.

In some embodiments, end vents 214 are located adjacent to clearance vents 212 to form a Bernoulli structure.

For example, the light source 22 includes a lamp. On the peripheral side of the lamp, a reflective component 21 is arranged. In this case, in the length direction of the lamp, the end of the reflective component 21 passes through the mounting hole 516, and the outer wall of the reflective component 21 and the inner wall of the mounting hole 516 form a clearance vent hole 212. In the longitudinal direction of the lamp, an end vent hole 214 is formed between the inner wall of the reflective component 21 and the lamp, as a result of which the clearance vent hole 212 and the end vent hole 214 form a Bernoulli structure.

Then, take the first vent 413 as an example as the air outlet of the fan 41. When the fan 41 operates, the pressure at the outlet with a higher flow rate between the end vent 214 and the gap vent 212 will be smaller, so that the wind in the flow path corresponding to the other outlet is discharged or sucked in, which improves the overall heat dissipation effect of the skin care device.

In particular, since the path of the air flow entering the reflective component 21 is more tortuous and long, when the fan 41 operates, the speed of the air flow outside the reflective component 21 to the clearance vents 212 will be greater than the speed of the air in the end vents 214, resulting in air being discharged into the reflective component 21.

Then, by continuing to refer to the above-mentioned outlet of the second heat dissipation channel 52 and the outlet of the third heat dissipation channel 57 to form another Bernoulli structure, the skin care device in the embodiment of the present invention makes it possible to increase the air flow speed inside the reflective component 21 by means of a double Bernoulli structure, which improves the heat dissipation effect.

In some embodiments, one or more clearance ventilation openings 212 may be provided. For example, the inner wall of the mounting opening 516 may be formed with at least one protrusion, and at least one protrusion is connected to the outer wall of the reflective component 21, due to which the protrusion separates several or at least two clearance ventilation openings 212 between the inner wall of the mounting opening 516 and the outer wall of the reflective component 21.

In some embodiments, the light emitting region 11 and the first ventilation hole 413 are located on opposite sides of the lamp circumference and are positioned relative to each other.

For example, the light emitting region 11 may be located on the front side of the lamp, and the first ventilation hole 413 may be located on the rear side of the lamp.

In some embodiments, two sides of the reflective component 21 in the peripheral direction form an opening in the direction of the light-emitting region 11 for directing light generated by the lamp into the light-emitting region 11, wherein at least one side of the reflective component 21 in the peripheral direction is provided with a lateral ventilation opening 213.

For example, both sides of the reflective component 21 may face forward, thus forming a front opening, while both the upper side and the lower side of the front side of the reflective component 21 may be provided with a side ventilation opening 213.

In particular, the reflective component 21 may be a reflective reflector.

In combination with the above, the deflector section 512 includes a first inner side wall 513 and a second inner side wall 514, one circumferential side of the reflective component 21 adjoins the first inner side wall 513, as a result of which the first inner side wall 513 directs part of the air to the adjacent side ventilation openings 213. The other side of the reflective component 21 in the circumferential direction adjoins the second inner side wall 514, so that the second inner side wall 514 directs part of the air flow to the adjacent side ventilation openings 213.

In some embodiments, the inner wall of the first heat-dissipation channel 51 is provided with a mounting hole 516 at least at one end of the longitudinal direction of the lamp. The mounting holes 516, located on different sides of the longitudinal direction of the lamp, are connected to the second heat-dissipation channel 52 through different third heat-dissipation channels 57.

For example, if the length direction of the lamp is in the left and right directions, the left and right walls of the inner wall of the first heat dissipation channel 51 may be provided with a mounting hole 516, and each mounting hole 516 is provided with a third heat dissipation channel 57.

Continue referring to Fig. 16, Fig. 16 is a schematic diagram of the first printed circuit board assembly of the skin care device shown in Fig. 2. In some embodiments, the skin care device also includes a printed circuit board assembly 600, wherein the printed circuit board assembly 600 includes a printed circuit board 61 and a conductive bracket 62. The printed circuit board 61 is located in the housing 100. The conductive bracket 62 is mounted on the printed circuit board 61.

Accordingly, the light emitting unit 200 includes a light source 22, wherein the light source 22 is mounted on a conductive bracket 62 for supporting the conductive bracket 62 and forming an electrical connection with the printed circuit board 61.

For example, the light emitting unit 200 may include a lamp, and the end of the lamp is connected to the conductive bracket 62, so that the lamp rests on the printed circuit board 61 and is electrically connected to the printed circuit board 61.

In some embodiments, the printed circuit board 61 and the bracket assembly 500 form a third heat dissipation channel 57, and the conductive bracket 62 is located in the third heat dissipation channel 57, so that the third heat dissipation channel 57 is completely used for installing and securing the lamp, due to which the overall structure of the skin care device becomes more compact.

In some embodiments, the number of light sources 22, such as lamps, is at least two, and the at least two light sources 22 are spaced apart from each other.

In addition, the skin care effect of the skin care equipment can be improved by emitting light from multiple light sources 22. For example, multiple light sources 22 can be turned on and off synchronously, whereby the light source units 22 can perform skin care with a higher maximum power, thereby improving the skin care effect of the skin care equipment; or different light sources 22 can emit light individually or in combination, so that the light source unit 22 can have at least three light emission modes, which can adjust a more suitable light emission mode according to the actual needs of the user, which improves the skin care effect of the skin care equipment.

If we take as an example several light sources 22 that can be turned on and off synchronously, then the first ends of all light sources 22 can be mounted on the same conductive bracket 62 for electrical connection with the printed circuit board 61, and the second ends of all light sources 22 are mounted on another conductive bracket 62 for electrical connection with the printed circuit board 61.

In particular, it may be a light source 22, such as a lamp with a positive electrode at the first end and a negative electrode at the second end, or a light source 22, such as a lamp with a negative electrode at the first end and a positive electrode at the second end. Then it can also be understood that the positive electrodes of all the light sources 22 are electrically connected to the printed circuit board 61 through the same conductive bracket 62, and the negative electrodes of all the light sources 22 are electrically connected to the printed circuit board 61 through another conductive bracket 62, which makes it possible to make the current transmission between the printed circuit board 61 and all the light sources 22 more consistent, and also improve the constancy of the light emission of all the light sources 22 and, ultimately, further improve the skin care effect of the skin care equipment.

In order to further explain and illustrate the technical solutions of the embodiments of the present invention, an example is given below of how different light sources 22 can emit light individually or in combination.

Continue to refer to Fig. 17, Fig. 17 is a schematic diagram of a second assembly of the printed circuit board of the skin care device shown in Fig. 2. At least two light sources 22 may include a first light source 221 and a second light source 222. Therefore, at least three different light emission modes can be achieved using the first light source 221 and the second light source 222. Of course, the number of light sources 22 may also be three, four, five or six, then the first light source 221 and the second light source 222 may be any two of several light sources 22, and the embodiment of the present invention is not limited to this.

The conductive bracket 62 includes the first conductive bracket 621, the second conductive bracket 622 and the third conductive bracket 623. In this case, the positive electrodes of the first light source 221 and the second light source 222 are electrically connected to the third conductive bracket 623. The negative electrode of the first light source 221 is electrically connected to the first conductive bracket 621, and the negative electrode of the second light source 222 is electrically connected to the second conductive bracket 622.

Then the third conductive bracket 623 can also be regarded as a common positive electrode, thus the number of conductive brackets 62 required between the light source 22 and the printed circuit board 61 is reduced, which simplifies the structure of the skin care equipment and reduces the assembly complexity and manufacturing cost of the skin care equipment.

It is also implied here that the printed circuit board 61, the third conductive bracket 623, the first light source 221 and the first conductive bracket 621 form a first circuit, and the printed circuit board 61, the third conductive bracket 623, the second light source 222 and the second conductive bracket 622 form a second circuit. Thus, independent control of the first light source 221 and the second light source 222 can be achieved by installing a switch in a corresponding place of the first conductive bracket 621 and another switch in a corresponding place of the second conductive bracket 622.

Alternatively, the conductive bracket 62 may also include a first conductive bracket 621, a second conductive bracket 622 and a third conductive bracket 623. The negative electrodes of the first light source 221 and the second light source 222 are electrically connected to the third conductive bracket 623, the positive electrode of the first light source 221 is electrically connected to the first conductive bracket 621, and the positive electrode of the second light source 222 is electrically connected to the second conductive bracket 622.

Then the third conductive bracket 623 can also be regarded as a common negative electrode, thus the number of conductive brackets 62 required between the light source 22 and the printed circuit board 61 is reduced, which simplifies the structure of the skin care equipment and reduces the assembly complexity and manufacturing cost of the skin care equipment.

It is also implied here that the printed circuit board 61, the third conductive bracket 623, the first light source 221 and the first conductive bracket 621 form a first circuit, and the printed circuit board 61, the third conductive bracket 623, the second light source 222 and the second conductive bracket 622 form a second circuit. Thus, independent control of the first light source 221 and the second light source 222 can be achieved by installing one switch in the corresponding place of the first conductive bracket 621 and another switch in the corresponding place of the second conductive bracket 622.

Continue referring to Fig. 18, Fig. 18 is a schematic diagram of the third assembly of the printed circuit board of the skin care device shown in Fig. 2. Of course, in some other embodiments, several conductive brackets 62 are provided. Different light sources 22 are mounted on the printed circuit board 61 by different conductive brackets 62. In this way, after any conductive bracket 62 falls off or is damaged, the remaining conductive bracket 62 can also supply power to the corresponding light source 22 to ensure the normal operation of other light sources of the skin care equipment 22. More importantly, such a configuration makes it possible to increase the light output power (for example, the power for hair removal) and/or the variety of light output functions (for example, the variety of functions for hair removal). That is, by installing at least two light sources 22, and also installing and fixing at least two light sources 22 on the printed circuit board 61 by means of different conductive brackets 62, when it is necessary to increase the power during hair removal, several light sources 22 can be turned on at the same time, and when this is not necessary, one of the light sources 22 can be turned on; alternatively, at least two lamps in at least two light sources 22 can emit light alternately, therefore, when the output power of light is increased, the losses of a single light source 22 can also be reduced or not increased.

In some embodiments, the light-emitting unit 200 further includes a reflective component 21, and the reflective component 21 is located around the lamp. The reflective component 21 is electrically connected to the printed circuit board 61, and the distance between the reflective component 21 and the lamp is less than a predetermined distance, due to which the reflective component 21 can light the lamp.

For example, the lamp may be a xenon lamp tube, and two ends or poles of the xenon lamp are electrically connected to the printed circuit board 61 through the conductive bracket 62, at which time the printed circuit board 61 can light or start the lamp through the reflective component 21, therefore, the number of parts of the skin care device can be reduced by reusing the reflective component 21, whereby the skin care device can be made more compact.

In some embodiments, the specified distance may be less than or equal to 2 mm. For example, the distance between the reflective component 21 and the lamp is 2 mm, 1.4 mm, 0.5 mm or 0 mm. Of course, when the distance between the reflective component 21 and the lamp is 0 mm, this can also be understood as a direct connection between the reflective component 21 and the lamp.

Alternatively, in some embodiments, wires (e.g., filaments) may be wrapped around the surface of the lamp, wherein the wires may be electrically connected to the printed circuit board 61 to light the lamp, and this is not an embodiment of the present invention.

In some embodiments, the printed circuit board assembly 600 also includes an insulating member 63. The insulating member 63 is installed in at least one of the lamps and the conductive bracket 62, wherein the insulating member 63 separates the reflective component 21 from the conductive bracket 62. In this case, the insulating member 63 and the mounting hole 516 are located at a certain distance from each other, forming a gap for air outlet. Therefore, the insulating member 63 makes it possible to prevent leakage in the conductive bracket 62 by the reflective component 21 used to light the lamp, which improves the reliability and safety of the skin care device.

The insulating element 63 may be made of an insulating material such as plastic, rubber, ceramic, etc., and the embodiment of the present invention is not limited to this.

As shown in Fig. 13, in some embodiments, the light-emitting unit 200 includes a lamp. The lamp is mounted in the mounting section 511. The inner wall of the deflector section 512 also includes a third inner side wall 517 and a fourth inner side wall 518, wherein the third inner side wall 517 and the fourth inner side wall 518 are connected between the first inner side wall 513 and the second inner side wall 514. The third inner side wall 517 and the fourth inner side wall 518 are located at different ends in the length direction of the lamp. In this case, along the direction of the first ventilation hole 413 toward the light-emitting unit 200, at least one of the third inner side wall 517 and the fourth inner side wall 518 is inclined in a direction close to the other, as a result of which the first part of the air flow is directed toward the light-emitting unit 200.

It is understood that during actual operation, the main heat of the lamp is concentrated in the middle portion of the lamp in the length direction, then, taking the first ventilation hole 413 as the air outlet of the fan 41 as an example, the first part of the air can be concentrated in the middle of the lamp through the third inner side wall 517 and the fourth inner side wall 518, thereby achieving an optimal heat dissipation effect.

For example, in the direction of the length of the lamp, the length of the deflector section 512 near one end of the light-emitting unit 200 is less than the length of the lamp, as a result of which the first part of the air flow is concentrated in the middle part of the lamp through the third inner side wall 517 and the fourth inner side wall 518.

In some embodiments, the bracket assembly 500 is also provided with at least one third heat dissipation channel 57. The third heat dissipation channel 57 is provided on the side of the third inner side wall 517 remote from the fourth inner side wall 518 and/or on the side of the fourth inner side wall 518 remote from the third inner side wall 517. The third heat dissipation channel 57 extends from the first inner side wall 513 to the second inner side wall 514. One end of the third heat dissipation channel 57 communicates with the outlet end of the first heat dissipation channel 51. The other end of the third heat dissipation channel 57 is connected to the second heat dissipation channel 52.

In this way, the third heat dissipation channel 57 can be arranged with full use of the outlet space formed by the inward tilt of the third inner side wall 517 and/or the fourth inner side wall 518, which makes the overall structure of the skin care device more compact.

In addition, since the third inner side wall 517 and the fourth inner side wall 518 are inclined inward, along the direction of the light emitting unit 200 toward the first ventilation hole 413, the width of the third heat dissipation channel 57 can gradually decrease, thereby creating an effect of increasing the pressure and accelerating the air flow.

Continue to refer to Fig. 19, Fig. 19 is a schematic illustration of the structure of the IGBT skin care device shown in Fig. 2. In some implementations, the printed circuit board assembly 600 may also include an IGBT device 64. The IGBT device 64 is mounted on the printed circuit board 61. An angle between one side surface of the IGBT device 64 in the thickness direction and the printed circuit board 61 is greater than or equal to 45° and less than or equal to 90°.

For example, the angle between one side surface of the IGBT device 64 in the thickness direction and the printed circuit board 61 may be 45°, 49°, 57.8°, 66.9°, 75.4°, 85° or 90°, and the embodiment of the present invention is not limited to this.

Then, compared with one side surface in the thickness direction of the IGBT device 64 being in close contact with the printed circuit board 61, the embodiment of the present invention forms a larger gap between the IGBT device 64 and the printed circuit board 61, which increases the contact area between the IGBT device 64 and the air and ultimately improves the heat dissipation effect of the IGBT device 64.

For example, the IGBT device 64 is mounted vertically on the printed circuit board 61. Thus, the angle between one side surface of the IGBT device 64 in the thickness direction and the printed circuit board 61 is approximately 90°.

In some embodiments, the fan 41 is used to force air into the housing so that it exits from the air outlet in the housing 100 along a predetermined path. The IGBT device 64 is at least partially located on the predetermined path. Thus, the heat dissipation effect of the IGBT device 64 can be further improved by the fan 41.

For example, the fan 41 can be mounted on the printed circuit board 61. The IGBT device 64 is located near the fan 41. Then, the air inlet of the fan 41 can suck in the air surrounding it, due to which the surrounding space of the fan 41 forms at least a part of a predetermined path. Accordingly, the IGBT device 64 is mounted near the fan 41 to achieve at least a partial mounting on a predetermined path.

In some embodiments, the printed circuit board 61 is located along the length direction of the housing 100. The printed circuit board 61 has a first side edge and a second side edge extending along the length direction, wherein the IGBT device 64 is located between the fan 41 and the first side edge, the IGBT device 64 is located near the first side edge.

Then, the first side edge and the second side edge may be two side surfaces respectively close to the width direction of the housing 100, or they may be two side surfaces respectively close to the thickness direction of the housing. Moreover, since the IGBT device 64 is located close to the first side edge, the space between the fan 41 and the first side edge can be reasonably used to install the IGBT device 64, which contributes to the miniaturization of the structure of the skin care device.

At this time, continuing to refer to the above-mentioned IGBT device 64, which is installed near the fan 41, the IGBT device 64 can be installed vertically, due to which the IGBT device 64 and the fan 41 are approximately at the same height, therefore, the space along the thickness direction of the casing 100 on the side of the fan 41 facing the first side edge is used rationally, which contributes to the miniaturization of the structure of the skin care device.

In some embodiments, one side surface of the IGBT device 64 in the thickness direction faces the fan 41. It is understood that, due to the large volume of the fan 41, the fan 41 occupies a correspondingly larger space in the length direction of the housing 100. At this time, by arranging one side surface of the IGBT device 64 in the thickness direction toward the fan 41, it is possible to rationally use the space along the length direction of the housing 100 on the side of the fan 41 facing the first side edge, which contributes to the miniaturization of the structure of the skin care device.

Continue referring to Fig. 20, Fig. 20 is a schematic diagram of another skin care device shown in Fig. 2. In some embodiments, the fan 41 may be inclined toward the printed circuit board 61. Therefore, taking the fan 41 mounted on the upper side of the printed circuit board 61 as an example, this means that there may be a larger gap between the lower part of the fan 41 and the printed circuit board 61 for heat dissipation, so that more areas on the upper surface of the printed circuit board 61 can be used for heat dissipation, wiring or installation of electronic components, etc., which contributes to the miniaturization of the structure of the skin care device.

In some embodiments, the number of air inlets or third ventilation holes 414 of the fan 41 is at least two, the third ventilation hole 414 is provided on the side of the fan 41 remote from the printed circuit board 61, and the third ventilation hole 414 is provided on the side of the fan 41 close to the printed circuit board 61, thus increasing the volume of air inlet of the fan 41, which improves the heat dissipation effect.

Continue referring to Fig. 21 and Fig. 22, Fig. 21 is a schematic diagram of the structure of the skin care device shown in Fig. 1 from another angle, Fig. 22 is a cross-section of the skin care device shown in Fig. 21 in the D-D direction. In some embodiments, the housing 100 is also provided with a first display area 16, wherein the first display area 16 has several forms of indication. The skin care device also includes a first light source unit 613. The first light source unit 613 is located in the housing 100, wherein the first light source unit 613 is used to generate light emitted from the first display area 16 to display the state of the skin care device. In this case, the first light source unit 613 is configured to display whether the skin care device is suitable for the skin by lighting up and going out, and is configured to display information about the transmission of the skin care device in the form of an indication displayed in the first display area 16. In this way, it is convenient for users to monitor the state of use of the skin care device, which improves the quality of service. In addition, the light source unit of the skin care device can be reduced, which reduces the cost of the skin care device.

In some embodiments, the skin care device may also be provided with a hair removal power control circuit, wherein the hair removal power control circuit is used to control the power of the light emitting unit 200 or the transmission of the skin care device. The hair removal power control circuit is also electrically connected to the first light source unit 613, as a result of which the first light source unit 613 is configured to display information about the transmission of the skin care device in the form of an indication displayed in the first display area 16.

In some embodiments, the skin care device may also include a hair removal power control circuit, wherein the hair removal power control circuit is used to control the power of the light emitting unit 200 or the transmission of the skin care device. The hair removal power control circuit is also electrically connected to the first light source unit 613, as a result of which the first light source unit 613 is configured to display information about the transmission of the skin care device in the form of an indication displayed in the first display area 16.

In some embodiments, the skin care device may also include a matching circuit. The matching circuit is used to determine whether the light-emitting region 11 is suitable for the skin. For example, the matching circuit includes a sensor for determining whether the light-emitting region 11 is suitable for the skin. The sensor may be a plate electrode, a non-contact light sensor, a microswitch, an ultrasonic sensor, etc., and the embodiment of the present invention is not limited to this.

In some embodiments, the first display region 16 includes several first additional display regions 161. The first light source unit 613 includes several light-emitting devices. The first light source unit 613 is used to emit light through a different number of light-emitting devices, so that a different number of first additional display regions 161 are illuminated, and the first display region 16 shows different forms of indication.

For example, the housing 100 may have a longitudinal direction, and several first auxiliary display areas 161 are arranged along the longitudinal direction of the housing 100. Several light-emitting devices are also arranged along the length direction of the housing 100, and each first auxiliary display area 161 is arranged in correspondence with one or more light-emitting devices. Then, by controlling the light emission of different light-emitting devices in the length direction of the housing 100, a different number of first auxiliary display areas 161 can be illuminated, due to which the first display area 16 shows different indication forms.

In some embodiments, at least 2 or more functions may be indicated by displaying the first display area 16, such as indicating whether the light-emitting region 11 corresponds to the skin and indicating information about the mechanism; that is, the first function (for example, corresponding to the skin) may be indicated by lighting the first display area 16, and the second function (transmission) may be indicated by the area/number/proportion, etc. of the first display area 16.

For example, when the light emitting region 11 is adjacent to the skin and the transmission information of the skin care device is switched to the first gear, the first auxiliary display region 161 can be illuminated, so that the first display region 16 shows the first indication form. When the light emitting region 11 is adjacent to the skin and the transmission information of the skin care device is switched to the second speed, the first two sub-display regions 161 can be illuminated, as a result of which the first display region 16 shows the second indication form. When the light emitting region 11 is adjacent to the skin and the transmission information of the skin care device is switched to the third speed, the first three sub-display regions 161 can be illuminated, as a result of which the first display region 16 shows the third indication form. However, when the light emitting region 11 does not match the skin, all of the first sub-display regions 161 are not illuminated, that is, the first display region 16 is not illuminated, which means there is no match.

Alternatively, the plurality of first additional display regions 161 may also be arranged in any direction, such as a circumferential direction or other curved directions, and the embodiment of the present invention is not limited to this.

In some embodiments, the skin care device may also include a control button 700. The control button 700 is provided in the housing 100 and is partially open in the housing 100, the control button 700 is used to control the operation of the skin care device.

In some embodiments, the area of the control button 700 and/or the housing 100 located next to the control button 700 is provided with a second display area 71, the second display area 71 is used to display whether the skin care device is connected to a power source.

Therefore, when operating the skin care device, the user can conveniently observe the second display area 71 to check whether the skin care device is connected to the power source using the control button 700, which can prevent the user from mistakenly thinking that the skin care device is damaged or that skin care cannot be completed when the skin care device is not turned on. It is also clear that when the second display area 71 is located at the control button 700, the holes on the surface of the body 100 can also be reduced, thereby making the appearance of the body 100 more concise and beautiful.

In some embodiments, the skin care device may also include a second light source unit 616. The second light source unit 616 is located in the housing 100. The second light source unit 616 is used to generate light for display in the second display regions 71.

For example, the second light source unit 616 may be an LED lamp, a tungsten lamp, etc., and the embodiment of the present invention is not limited to this.

In some embodiments, the housing 100 has a longitudinal direction, the housing 100 includes a panel 14 extending along the length direction, and the first display region 16 and the second display region 71 are spaced apart from each other and are both provided on the panel 14.

For example, the housing 100 can be formed in the form of long strips, then the first display region 16 and the second display region 71 can be located on the same side in the width or thickness direction of the housing 100. Therefore, when the user holds one end of the housing 100 in the longitudinal direction, the first display region 16 and the second display region 71 can be easily observed.

It is also understood that the second display area 71 is provided on the panel 14, the second display area 71 can be formed directly on the panel 14, the second display area 71 can also be provided on the control button 700, and the control button 700 is located on the panel and, thus, indirectly located on the panel 14, and the embodiment of the present invention is not limited to this.

In some embodiments, the panel 14 may be covered by the first light source unit 613 and/or the second light source unit 616. The panel 14 partially transmits light, forming the first display region 16 and/or the second display region 71.

For example, the panel 14 may include a light-transmitting plate. The light-transmitting plate has a light-transmitting region and a shading region. The shading region is provided with a shading structure, such as a shading layer, and the light-transmitting region forms the first display region 16 and/or the second display region 71. Then, the light output of the first light source unit 613 and/or the second light source unit 616 can be achieved through the light-transmitting region, and the light generated by the first light source unit 613 and/or the second light source unit 616 can be unevenly scattered, the structure around the first light source unit 613 and/or the second light source unit 616 can be darkened to improve the appearance of the body 100.

In some embodiments, the light-transmitting region of the panel 14 forms the first display region 16. The panel 14 can also be provided with a mounting hole, and the control button 700 passes through the mounting hole, the control button 700 is provided with a second display region 71.

Alternatively, the first display region 16 and/or the second display region 71 may also be an opening structure on the surface of the housing 100, and the embodiment of the present invention is not limited to this.

In the above embodiments, the description of each embodiment has its own focus, for details that are not described in detail in one embodiment, please refer to the corresponding descriptions of other embodiments.

In some embodiments, the housing 100 has a length direction, a width direction and a thickness direction. The light-emitting region 11 is located at one end of the housing 100, the length direction of the lamp corresponds to the width direction of the housing 100, and the ends of the air inlets of the first heat-dissipation channel 51 and the second heat-dissipation channel 52 are spaced apart from each other in the thickness direction of the housing 100. The housing 100 also has a back plate extending in the length direction, the back plate of the housing 100 is provided with an air inlet and an air outlet of the housing, wherein the air inlet of the housing is connected to the air inlet of the fan 41, the air inlet of the housing is connected to the end of the air outlet of the first heat-dissipation channel 51 and the second heat-dissipation channel 52.

The skin care device provided by the embodiment of the present invention has been described in detail above. The description of the above examples is used solely to help understand the method and its basic idea of the present invention. In addition, technical personnel in this field can make changes in specific implementation methods and application areas based on the ideas of the present invention. Therefore, the content of the present description should not be understood as limiting the present invention.

Claims (82)

1. A skin care device comprising: a housing provided with a light-emitting area; a light-emitting unit located in the housing and configured to generate light emitted from the light-emitting region onto the skin to be treated; a cold compress unit located in the light emitting area for cold compressing the skin; and a heat dissipation unit comprising: a fan; a temperature control plate; and a radiator mounted on the temperature control plate; wherein the fan is provided with a first ventilation opening, wherein one end of the temperature control plate is thermally connected to the cold compress unit, and the other end of the temperature control plate is located at the first ventilation opening, the fan is configured to direct a first portion of the air flow through one side of the temperature control plate located away from the radiator and the light emitting unit for removing heat on the light emitting unit and with the possibility of directing a second portion of the air flow through the radiator for removing heat on the cold compress unit. 2. A skin care device according to item 1, characterized in that the skin care device additionally comprises a bracket assembly, wherein the bracket assembly is located in the housing, the bracket assembly and the thermal control plate form a first heat dissipation channel for the passage of a first portion of the air flow; wherein the light emitting unit is at least partially located in the first heat sink channel; and the bracket assembly additionally contains an insulating portion, wherein the insulating portion separates the light-emitting unit from the temperature control plate. 3. A device for skin care according to paragraph 2, characterized in that: along the light emitting unit in the direction of the first ventilation hole, the insulating portion is shorter than the temperature control plate and rests on the temperature control plate; or the side surface of the thermal control plate facing one side of the light-emitting unit includes a shielding region and an open region, the insulating portion rests on the shielding region, the minimum distance between the open region and the light-emitting unit is greater than or equal to 6 mm; or the side surface of the thermal control plate facing one side of the light emitting unit includes a shielding region and an open region, the insulating portion rests on the shielding region, and the open region is a flat region for flow diversion and heat dissipation; or A skin care device is a hair removal device or a skin rejuvenation device. 4. A skin care device according to item 1, characterized in that the skin care device additionally comprises: a bracket assembly, wherein the bracket assembly is located inside the housing, the bracket assembly and the temperature control plate form a first heat dissipation channel and a second heat dissipation channel; the light emitting unit is at least partially installed in the first heat dissipation channel, one side of the thermal control plate and the bracket unit form a near section of the ventilation opening of the first heat dissipation channel, wherein the near section of the ventilation opening of the first heat dissipation channel is connected to the first ventilation opening and the fan directs the first portion of the air flow through the near section of the ventilation opening of the first heat dissipation channel, removing heat on the light emitting unit; and the radiator is located in the second heat dissipation channel, the other side of the thermal control plate and the bracket assembly form a near section of the ventilation opening of the second heat dissipation channel, wherein the near section of the ventilation opening of the second heat dissipation channel is connected to the first ventilation opening and the fan directs the second part of the air flow through the near section of the ventilation opening of the second heat dissipation channel, removing heat on the cold compress assembly. 5. The skin care device according to item 4, characterized in that the first heat dissipation channel includes a mounting section and a deflector section distributed along the light-emitting unit in the direction of the first ventilation opening; wherein the light emitting unit is at least partially mounted in the mounting section; one end of the deflector section is located on the first ventilation opening and connected to the first ventilation opening, and the other end of the deflector section is connected to the mounting section; the near section of the ventilation opening of the first heat dissipation channel is formed in the deflector section; and along the direction of the first ventilation hole toward the light-emitting unit, the cross-sectional area of at least a portion of the deflector section gradually increases. 6. A device for skin care according to item 5, characterized in that the inner wall of the deflector section includes: a first inner side wall facing the thermal control plate; and a second inner side wall opposite the first inner side wall: wherein along the direction of the first ventilation opening toward the light-emitting unit, at least one of the first inner side wall and the second inner side wall are deviated from each other, due to which the distance between the first inner side wall and the second inner side wall gradually increases. 7. The skin care device according to claim 6, characterized in that the deflector section is provided with a first anti-turbulent structure for limiting the formation of turbulence in the deflector section. 8. A device for skin care according to item 7, characterized in that the light-emitting unit includes: lamp; and a reflective component, wherein the reflective component comprises an arc-shaped portion located around the lamp, the arc-shaped portion being at least partially located on the side of the lamp near the deflector section; wherein one end of the circumference of the arcuate portion adjoins the first inner side wall, and the other end of the circumference of the arcuate portion adjoins the second inner side wall; and the first inner side wall or the second inner side wall are provided with a first anti-turbulence structure; or The first anti-turbulence design includes a deflector, wherein: the deflector extends along the first ventilation opening in the direction of the light emitting unit; or a plurality of deflectors are provided, wherein the plurality of deflectors are arranged at intervals along the length direction of the light-emitting unit; or the deflector comprises a first bevel and a second bevel arranged relative to each other in the thickness direction; along the direction of the first ventilation opening toward the light-emitting unit, the first bevel and the second bevel are inclined in a direction opposite to each other, as a result of which the thickness of the deflector near one end of the light-emitting unit is greater than the thickness of the deflector at a distance from one end of the light-emitting unit; or the inner wall of the deflector section comprises a first deflector surface connected to the deflector, the deflector further comprises a third bevel, the third bevel is located on the side of the deflector remote from the first deflector surface; along the first ventilation opening in the direction of the light-emitting unit, the third bevel is inclined in a direction opposite to the first deflector surface, as a result of which the height of the deflector protruding from the first deflector surface at one end near the light-emitting unit is greater than the height of the deflector protruding from the first deflector surface at one end away from the light-emitting unit. 9. The skin care device according to claim 5, characterized in that one end of the temperature-regulating plate, located near the first ventilation hole, is deflected to the side close to the place where the light-emitting unit is located, with the formation of a deflectable section; wherein the deflectable section reaches the first ventilation opening, the side of the deflectable section close to the light-emitting unit and the bracket unit form at least part of the deflector section, and the side of the deflectable section facing away from the light-emitting unit and the bracket unit form the near section of the ventilation opening of the second heat dissipation channel. 10. A device for skin care according to item 9, characterized in that the radiator includes: a near section of the heat sink mounted on the deflected section; and a far section of the heat sink connected to one end of the near section of the heat sink located near the light emitting region; wherein the width of the near section of the heat sink is greater than the width of the far section of the heat sink, and the width of the radiator is the distance from the side of the radiator close to the thermal control plate to the side far from the thermal control plate. 11. A device for skin care according to item 10, characterized in that the radiator includes: the connecting side installed on the thermostatic plate; and the free side facing away from the thermostatic plate; wherein along the direction of the light-emitting unit to the first ventilation hole, the connecting side and the free side of the near section of the heat sink are inclined in a direction from each other, the width of the near section of the heat sink gradually increases; or the body contains a light emitting section extending from the junction between the near section of the heat sink and the far section of the heat sink to the light emitting region; wherein along the direction of the light-emitting unit to the light-emitting region, the cross-sectional area of the light-emitting section gradually decreases. 12. The skin care device according to claim 10, characterized in that several radiators are provided and each of the radiators includes a connecting side mounted on the thermostatic plate and a free side facing away from the thermostatic plate, the free sides of the several radiators form free surfaces, and the free surfaces include a wind protection area near the first ventilation hole and a circulation area near the cold compress unit; wherein the heat dissipation unit additionally includes a shielding part, wherein the shielding part shields the wind protection area, and the wind between adjacent radiators flows out or flows in from the circulation area next to the cold compress unit. 13. The skin care device according to claim 12, characterized in that the length of the shielding portion is more than one third of the length of the radiator in the direction of the first ventilation opening to the light-emitting unit; or the shielding portion at least shields the free side of the heat sink section or; the shielding part contains a windshield, and a windshield cover is provided on the free side of several radiators; or The shielding part contains several bends, each of the bends is bent and connected to the free side of one of the radiators. 14. The skin care device according to claim 12, characterized in that the housing is additionally provided with a second ventilation hole connected to the outer side of the housing, wherein the second ventilation hole is located on the radiator side, away from the thermostatic plate, the second ventilation hole is provided in accordance with the shielding part, the second ventilation hole is connected to the circulation area. 15. The skin care device according to item 14, characterized in that a second anti-turbulent structure is provided on the side of the radiator remote from the thermostatic plate; wherein the second anti-turbulent structure is located in the circulation region to limit the air flow leaving the circulation region to form turbulence; and the second anti-turbulence structure comprises a plurality of toothed portions, wherein the plurality of toothed portions are formed convex on the side of the radiator remote from the thermal control plate. 16. A device for skin care according to paragraph 5, characterized in that: the housing is also provided with a second ventilation hole connected to the outside of the housing, wherein the second ventilation hole is located on the side of the radiator remote from the thermal control plate; and the inner wall of the housing also has a third heat dissipation channel, one end of the third heat dissipation channel is connected to the end of the first heat dissipation channel, remote from the first ventilation hole, and the other end of the third heat dissipation channel and the end of the second heat dissipation channel, located away from the first ventilation hole, are connected to the second ventilation hole for air and form a Bernoulli structure at the junction. 17. The skin care device according to claim 16, characterized in that the outlet of one end of the third heat dissipation channel near the second ventilation hole is located on the inner wall of one end of the second heat dissipation channel near the second ventilation hole; or the second heat dissipation channel extends from the first ventilation hole to the second ventilation hole of the housing, and a radiator is located in the second heat dissipation channel, and both the first ventilation hole and the second ventilation hole are adjacent to the radiator; the first heat dissipation channel is located on the side of the thermal control plate remote from the second ventilation hole, due to which the total length of the air flow path in the first heat dissipation channel and the third heat dissipation channel is greater than the total length of the air flow path in the second heat dissipation channel; or the skin care device further includes a printed circuit board assembly, wherein the printed circuit board assembly includes: a printed circuit board located in the housing, wherein the printed circuit board and the bracket assembly form a third heat dissipation channel; and a conductive bracket mounted on the printed circuit board and located in the third heat sink channel; wherein the light-emitting unit comprises a lamp, the end portion of the lamp is connected to the conductive bracket in such a way that the lamp rests on the printed circuit board and is electrically connected to the printed circuit board. 18. A device for skin care according to item 5, characterized in that: the inner wall of the first heat dissipation channel is provided with a mounting hole, and the light-emitting unit is installed in the first heat dissipation channel through the mounting hole and forms a clearance ventilation hole with the inner wall of the mounting hole; and the light emitting unit comprises a reflective component and a light source, the light source is located in the reflective component, the surrounding side of the reflective component is provided with a side ventilation hole, the side ventilation hole is connected to the first heat dissipation channel, and the end portion of the reflective component is also provided with an end ventilation hole. 19. The skin care device according to claim 18, characterized in that the end ventilation holes are located next to the gap ventilation holes, forming a Bernoulli structure. 20. A device for skin care according to item 6, characterized in that: the light emitting unit comprises a lamp which is mounted in a mounting section; and the inner wall of the deflector section also includes a third inner side wall and a fourth inner side wall, the third inner side wall and the fourth inner side wall are connected between the first inner side wall and the second inner side wall, the third inner wall and the fourth inner wall are respectively located at different ends in the length direction of the lamp; wherein along the direction of the first ventilation opening toward the light-emitting unit, at least one of the third inner side wall and the fourth inner side wall is inclined in a direction close to the other, to direct a portion of the air exiting from the first ventilation opening toward the light-emitting unit.