WO2025227378A1 - Photo-thermal hairdressing device - Google Patents

Abstract

A photo-thermal hairdressing device, comprising a rod body (200, 201, 202, 203, 204, 205), a light source assembly, and a power source assembly. The light source assembly is arranged in the rod body (200, 201, 202, 203, 204, 205) and is electrically connected to the power source assembly; the light source assembly comprises a light source; and light emitted by the light source can exit from the rod body (200, 201, 202, 203, 204, 205).

Description

Photothermal hair styling device Technical Field

This application relates to the field of beauty and hairdressing, and in particular to a hair styling device for hairdressing.

Background Technology

Currently, most curling irons and straighteners on the market use PTC and MCH heating methods (PTC and MCH are both ceramic heating methods, which are commonly used in curling irons and straighteners) to curl and straighten hair. This method of heating involves heating an aluminum rod or sheet and then transferring the heat to the hair, causing the hair to deform when it reaches a certain temperature. During the heating process, the heat from the metal material is directly transferred to the hair, resulting in a high and difficult-to-control temperature. The hair is in a state of prolonged heating, which causes significant damage to the hair cuticle and medulla. The continuous heating also leads to significant moisture evaporation from the hair, severely affecting the hair's texture and shine.

Technical issues

The purpose of this application is to provide a photothermal hair styling device that solves the problems of existing curling irons or straighteners causing significant damage to the hair cuticle and medulla, and causing excessive moisture evaporation during continuous heating, which seriously affects the hair quality and shine.

Technical solutions

To achieve the purpose of this application, the following technical solution is provided:

This application provides a photothermal hair styling device, which includes a rod, a light source assembly, and a power supply assembly. The light source assembly is disposed in the rod and electrically connected to the power supply assembly. The light source assembly includes a light source, and the light emitted by the light source can be emitted from the rod.

This application employs a photothermal effect, utilizing the thermal energy of light and spatial radiation to eliminate the problems of conduction and conduction efficiency of intermediate media, allowing the hair to be heated quickly and instantly to achieve the desired curling/straightening effect; at the same time, it utilizes the effect of a life-giving light source to assist in hair styling and treatment; the light source heating is also less likely to burn the hair.

In some embodiments, the rod body is made of a light-transmitting material. Specifically, in some embodiments, the rod body is a light-transmitting crystal, such as a transparent or translucent crystal. In some specific embodiments, the light-transmitting crystal can be a glass product made of any one of the following materials: sapphire, quartz, or borosilicate glass, which allows for light transmission and heat conduction. In other embodiments, the rod body can also transmit light by providing light-transmitting holes in its sidewalls.

In a specific embodiment, the rod body has a receiving cavity, and the light source assembly is disposed in the receiving cavity and electrically connected to the power supply assembly.

In some embodiments, the photothermal hair styling device further includes a housing, within which the power supply assembly is disposed, and the rod is fixedly or detachably mounted to the housing. The housing can also serve as a grip for the user to hold the hair styling device.

In some embodiments, the outer casing includes a main body and an air inlet, the air inlet having an air inlet hole. In some embodiments, the rod body has an air outlet hole, the air outlet hole connecting to the air inlet hole to form a ventilation path. The ventilation path allows air to circulate inside the photothermal hair styling device, which can both dissipate heat from internal components and lower hair temperature when needed. The air inlet, located at the air inlet hole, can be positioned at the rear or end of the outer casing. The air outlet hole can also serve as a light-transmitting hole.

In some embodiments, the air inlet is covered by an air inlet shroud, which has perforations communicating with the air inlet holes. The air inlet shroud serves to prevent dust accumulation.

In some embodiments, the photothermal hair styling device further includes a blower assembly connected to the power supply assembly, the blower assembly being disposed within the ventilation path. When the photothermal hair styling device is used to heat and curl the hair, and the blower mode is activated, the blower assembly circulates air within the ventilation path and blows cool air onto the hair, rapidly lowering the hair temperature and creating a rapid temperature difference between hot and cold, which is beneficial for hair styling. The blower assembly can be a blower or a fan.

In some embodiments, the air outlet penetrates the side wall of the rod, and the angle between the penetration direction and the radial direction of the rod is 0°~90° or 0°~-90°. When multiple air outlets are arranged on the rod, clockwise or counterclockwise airflow can be formed. In some specific embodiments, the angle between the penetration direction and the radial direction of the rod is 10°~70° or 0°~-70°.

In some embodiments, the air outlet penetrates the side wall of the rod and extends longitudinally along the rod, with its extension direction intersecting the rod's axis. Specifically, in some embodiments, the angle between the longitudinal extension direction of the air outlet and the rod's axis is 0°~70° or 0°~-70°.

The photothermal hair styling device of this application heats and curls hair, and then cools it down with a cooling and ventilation design. The combination of rapid heating and rapid cooling can achieve rapid temperature difference styling.

In some embodiments, a filtering element is provided before the light emitted from the light source. Specifically, a filtering element can be provided between the light source and the rod body, or a film can be coated on the light source. In specific embodiments, the light source is a lamp tube, and a filter film is coated on the surface of the lamp tube; or a filter film can be coated on the rod body, either on the inner or outer surface of the rod body; or the rod body is made of a filterable crystal. The photothermal hair styling device of this application can also use different wavelengths of light to treat the hair/scalp. Different wavelengths can be achieved by changing the light source to emit different wavelengths, or by filtering the light before it is emitted from the light source using a filtering element, or by coating the surface of the lamp tube to select a desired single wavelength (e.g., 900-1800nm, 380-450nm, or 600-750nm), or by coating multiple wavelengths: selecting two or more light wave ranges (e.g., 3...). (80-450nm + 900-1800nm), different wavelength films are deposited on the surface of the lamp tube in different directions, or on the surface of different positions along the lamp tube axis; or the film is deposited on the tube body, or a filterable crystal is selected as the tube body. The required single wavelength band can be selected (such as 900-1800nm or 380-450nm or 600-750nm), or two or more light wave ranges can be selected to deposit multi-wavelength films (such as 380-450nm + 900-1800nm). Different wavelengths of light have different phototherapy effects on hair/scalp. For example, near-infrared wavelengths (900-2500nm) can stimulate blood circulation in the head; red light (600-750nm) can regulate biochemical enzymes in the scalp and hair follicles, such as affecting 5-α reductase in male pattern baldness and tyrosinase in gray hair; protein is the main component of hair, and red light can enhance the synthesis of ribonucleic acid in human tissue cells, thereby enhancing protein synthesis, which is beneficial for hair growth and increases hair density and elasticity; 420nm light can inhibit the growth of Malassezia and improve folliculitis.

In some embodiments, the rod is specifically a columnar body with an internal cavity, or the rod is a columnar body with a middle section extending through both ends, the cavity being the space in the middle section, and the two ends extending through to facilitate airflow.

In some embodiments, the power supply assembly includes a main circuit board, conductive female terminals, and a power cord. An external power source can be connected via the power cord, and the main circuit board can be connected via the conductive female terminals. The power supply assembly also includes a button circuit board and buttons. The button circuit board is electrically connected to the main circuit board, and the buttons are mounted on the housing via button sockets and cooperate with the button circuit board. In other embodiments, the photothermal hair styling device can also be powered by a primary or secondary battery.

In some embodiments, the light source is a dual-electrode lamp or a single-electrode lamp. Specifically, the light source is any one of a halogen lamp, a carbon filament lamp, a tungsten filament lamp, or an incandescent lamp.

In some embodiments, the light source includes a lamp tube and a conductive sheet. The positive or negative terminal of the lamp tube is electrically connected through the conductive sheet, and both the positive and negative terminals of the lamp tube are electrically connected to the power supply assembly on one side of the lamp tube. In a specific embodiment, the conductive sheet includes an outer coil surrounding the lamp tube and electrically connected to one of the positive and negative electrodes, and a straight conductor connected to the outer coil. This allows the conductive sheet to guide one of the positive and negative electrodes of the lamp tube from one side to the other, facilitating electrical connection of both electrodes to the circuit board on one side of the lamp tube. In other embodiments, the positive and negative terminals of the lamp tube are electrically connected to the power supply assembly on one side of the lamp tube via conductive tips.

Beneficial effects

Compared with the prior art, this application has the following advantages:

This photothermal hair styling device utilizes the photothermal effect, employing the thermal energy of light and spatial radiation to eliminate the problems of conduction and conduction efficiency of intermediate media, allowing the hair to be heated quickly and instantly to achieve the effect of curling/straightening hair; at the same time, it utilizes the effect of a life light source to assist in hair styling and therapy; the light source heating is also less likely to burn the hair.

Using a light source for heating, it can directly radiate/irradiate heat from a 360-degree angle. By utilizing the heat transfer of light energy and the speed of light, it can quickly heat the hair. The 360° synchronous heating makes the hair heat up faster and more evenly, and while shortening the heating time, it effectively reduces the damage to the hair medulla caused by continuous heating.

In addition, the cooling effect can be combined. When the hair is heated and curled using the photothermal hair styling device, the blow-drying mode is turned on. The blow-drying component drives the air to circulate in the ventilation path and blows the cool air onto the hair, which can quickly lower the hair temperature and create a rapid temperature difference between hot and cold after curling, which is beneficial for hair styling.

Different wavelengths of light have different phototherapy effects on hair/scalp. For example, near-infrared wavelengths (900-2500nm) can stimulate blood circulation in the head; red light (600-750nm) can regulate biochemical enzymes in the scalp and hair follicles, such as affecting 5-α reductase in male pattern baldness and tyrosinase in gray hair; protein is the main component of hair, and red light can enhance the synthesis of ribonucleic acid in human tissue cells, thereby enhancing protein synthesis, which is beneficial for hair growth and increases hair density and elasticity; 420nm light can inhibit the growth of Malassezia and improve folliculitis.

Attached Figure Description

Figure 1 is a three-dimensional schematic diagram of an embodiment of the photothermal hair styling device of this application;

Figure 2 is an exploded view of Embodiment 1 of the photothermal hair styling device of this application;

Figure 3 is a cross-sectional view of an embodiment of the photothermal hair styling device of this application;

Figure 4 is a schematic diagram of the dual-head electrode point light source of the photothermal hair styling device of this application;

Figure 5 is a schematic diagram of a single-head electrode point light source of the photothermal hair styling device of this application;

Figure 6 is an exploded view of Embodiment 2 of the photothermal hair styling device of this application;

Figure 7 is a cross-sectional schematic diagram showing the positional relationship between the light source and the rod of the photothermal hair styling device of this application;

Figure 8 is a schematic diagram of the light emission from the light source along the A-A direction in Figure 7;

Figure 9 is a three-dimensional schematic diagram of Embodiment 3 of the photothermal hair styling device of this application;

Figure 10 is an exploded view of Embodiment 3 of the photothermal hair styling device of this application;

Figure 11 is a three-dimensional schematic diagram of Embodiment 4 of the photothermal hair styling device of this application;

Figure 12 is an exploded view of Embodiment 4 of the photothermal hair styling device of this application;

Figure 13 is a cross-sectional view of Embodiment 4 of the photothermal hair styling device of this application;

Figure 14 is an exploded view of Embodiment 5 of the photothermal hair styling device of this application;

Figure 15 is a three-dimensional schematic diagram of Embodiment 6 of the photothermal hair styling device of this application;

Figure 16 is a schematic diagram of the disassembly and assembly of Embodiment 7 of the photothermal hair styling device of this application;

Figure 17 is an exploded view of Embodiment 8 of the photothermal hair styling device of this application;

Figure 18 is a cross-sectional view of an eighth embodiment of the photothermal hair styling device of this application;

Figure 19 is a cross-sectional view of Embodiment 9 of the photothermal hair styling device of this application;

Figure 20 is a three-dimensional schematic diagram of Embodiment 10 of the photothermal hair styling device of this application;

Figure 21 is a schematic diagram of an embodiment of the photothermal hair styling device of this application;

Figure 22 is a cross-sectional view of Embodiment 10 of the photothermal hair styling device of this application;

Figure 23 is a schematic diagram of the assembly of the photothermal hair styling device of this application in Embodiment 10, which adopts a detachable assembly method;

Figure 24 is a cross-sectional view of the air outlet of the embodiment in Figure 23;

Figure 25 is a schematic diagram of the tenth embodiment of the photothermal hair styling device of this application, which involves changing the light source.

Figure 26 is a schematic diagram of the disassembly and assembly of Embodiment 11 of the photothermal hair styling device of this application;

Figure 27 is a cross-sectional view of the air outlet of Embodiment 11 of the photothermal hair styling device of this application;

Figure 28 is a schematic diagram of the disassembly and assembly of Embodiment Twelve of the photothermal hair styling device of this application;

Figure 29 is a cross-sectional view of the air outlet of Embodiment Twelve of the photothermal hair styling device of this application;

Figure 30 is a three-dimensional schematic diagram of Embodiment Thirteen of the photothermal hair styling device of this application;

Figure 31 is an exploded view of Embodiment Thirteen of the photothermal hair styling device of this application;

Figure 32 is a schematic diagram of the disassembly and assembly of Embodiment 13 of the photothermal hair styling device of this application;

Figure 33 is an exploded schematic diagram of Embodiment Fourteen of the photothermal hair styling device of this application;

Figure 34 is a cross-sectional view of the air outlet of Embodiment Fourteen of the photothermal hair styling device of this application.

Embodiments of the present invention

The terms “first,” “second,” “third,” “left,” “right,” “upper,” and “lower” used in this application are not intended to limit the technical solution of this application, but are only used to distinguish and describe the various components.

Please refer to Figures 1-3, which are schematic diagrams of one embodiment of the photothermal hair styling device of this application. The photothermal hair styling device includes a housing 100, a rod 200, a light source assembly, and a power supply assembly. The power supply assembly includes a circuit board 400 disposed in the housing 100, a conductive female terminal 410 electrically connected to the circuit board 400, and a power cord 420. An external power supply can be connected through the power cord 420, and the external power is connected to the circuit board 400 through the conductive female terminal 410. The rod 200 is fixedly or detachably installed together with the housing 100, and the housing 100 can also serve as a grip for the user to hold the hair styling device. The rod has a receiving cavity 220, and the light source assembly is disposed in the receiving cavity 220 and electrically connected to the power supply assembly. The light source assembly includes a light source, and the light emitted by the light source can be emitted from the rod 200. As shown in Embodiment 1, the rod body 200 is fixedly installed together with the outer shell 100, and a connecting ring 521 is provided at the connection point. The front end of the rod body 200 is provided with a front protective sleeve 510.

The power supply assembly also includes a button circuit board 430 and a button 450. The button circuit board 430 is electrically connected to the main circuit board 400, and the button 450 is mounted on the housing 100 via a button socket 440 disposed on the housing 100 and cooperates with the button circuit board 430. In some other embodiments, the photothermal hair styling device can also be powered by a primary battery or a secondary battery.

This application employs a photothermal effect, utilizing the thermal energy of light and spatial radiation to eliminate the problems of conduction and conduction efficiency of intermediate media, allowing the hair to be heated quickly and instantly to achieve the desired curling/straightening effect; at the same time, it utilizes the effect of a life-giving light source to assist in hair styling and treatment; the light source heating is also less likely to burn the hair.

The light source can be any type of lamp tube, such as halogen lamp, carbon filament lamp, tungsten filament lamp, or incandescent lamp, as shown in Figures 2-4. The light source uses a double-ended electrode lamp tube 300, with its positive and negative terminals located on both sides of the lamp tube 300. In this embodiment, the light source assembly also includes a conductive sheet 310. The positive or negative terminal on one side of the lamp tube 300 is electrically connected through the conductive sheet 310 and then extended to the other side, so that both the positive and negative terminals of the lamp tube 300 are electrically connected to the power supply assembly on one side of the lamp tube 300. In a specific embodiment, the conductive sheet 310 includes two outer electrical rings 311 respectively surrounding both ends of the lamp tube 300. One of the outer electrical rings 311 is electrically connected to one of the positive and negative electrodes on one side. The conductive sheet 310 also includes a straight conductor 312 connecting the two outer electrical rings 311, thereby the conductive sheet 310 leads one of the positive and negative electrodes of the lamp tube 300 from one side of the lamp tube 300 to the other side, facilitating the electrical connection of both electrodes to the circuit board 400 on one side of the lamp tube 300. Referring to Figure 5, in some other embodiments, a single-ended electrode can be used to light the lamp tube 301, and the positive and negative electrodes of the lamp tube 301 are electrically connected to the power supply assembly on one side of the lamp tube 301 through a conductive head 320. As shown in Embodiment 2 of Figure 6, the light source uses a single-ended electrode to light the lamp tube 301. This light source replacement design can be applied in combination with various embodiments.

Please refer to Figures 7 and 8, which are cross-sectional schematic diagrams of the positional relationship between the light source and the rod, and a transverse cross-sectional schematic diagram of the light emission. The figures show simplified structural diagrams to illustrate the positional relationship and light emission path. In the figures, a is a simplified structural schematic diagram of the rod, b is a simplified structural schematic diagram of the light source, c is the light emission direction, and d is hair wrapped around the rod. Referring to Figures 1-6, the rod 200 is a light-transmitting crystal, specifically, a transparent or translucent crystal, which can be made of sapphire/quartz/high borosilicate glass to achieve light transmission and heat conduction. The photothermal hair styling device of this application uses a light source for heating. The light-transmitting rod can directly emit light at 360° to radiate/irradiate heat onto the hair, utilizing the heat transfer of light energy and the speed of light to quickly heat the hair. 360° synchronous heating makes the hair heat up faster and more evenly, and while shortening the heating time, it effectively reduces the damage to the hair medulla caused by continuous heating. In some other embodiments, the rod 200 can also be made to transmit light by setting openings on the side wall.

Referring to Figures 9 and 10, which are schematic diagrams of Embodiment 2 of the photothermal hair styling device of this application, the rod body 201 is provided with air outlets 210. The air outlets 210 are interconnected to form a ventilation path, so as to play a certain role in cooling when needed, and can also serve as light-emitting holes. The air outlet design can be applied in various embodiments.

Referring to Figures 11-13, in Embodiment 4 of the photothermal hair styling device of this application, the difference from the previous embodiments is that the rod 200 of the photothermal hair styling device is detachably installed together with the outer shell 101. A connecting seat 530 is provided at the end of the rod 200 connecting to the outer shell 101. The connecting seat has external threads, and the connection point of the outer shell 101 has internal threads (not shown). The two are mutually fitted and fixed together, and can be disassembled. A ventilation hole 532 is provided at the end of the connecting seat 530 facing the outer shell 101, and the ventilation hole 532 communicates with the internal accommodating cavity 220 of the rod 200. The detachable design is not limited to threaded connections; it can also employ snap-fit, interference fit, slot fit, and other detachable fitting methods. The ventilation hole 532 can be multiple as shown in Figure 11, or a single, two, three, or four as shown in Figure 12, without limitation. The ventilation hole 532 connects the accommodating cavity 220 of the rod body 200 and the interior of the outer shell 101, allowing air to circulate throughout the entire photothermal hair styling device and promoting overall temperature balance. This detachable design can be applied in various embodiments.

Referring to Figure 14, in the fifth embodiment of the photothermal hair styling device of this application, the rod 201 is provided with an air outlet 210, which, combined with the detachable design, demonstrates that the design of different components and their variations can be flexibly combined. The rod 201 of the photothermal hair styling device is detachably installed together with the outer shell 101. One end of the rod 202 connected to the outer shell 101 is provided with a connecting seat 530, which is threadedly connected to the outer shell 101. The end of the connecting seat 530 facing the outer shell 101 is provided with a ventilation hole 532.

Please refer to Figures 15-18 for schematic diagrams of Embodiments 6, 7, and 8 of the photothermal hair styling device of this application. The main design feature of these three embodiments is the inclusion of an air intake structure. Referring to Figures 15-18, the outer casing 102 includes a main body 110 and an air intake 120, with an air intake hole 140 in the air intake 120. The air intake hole 140 allows outside air to enter the hair styling device and connect to the rod 200. Air can circulate out through a through hole 511 on the front protective cover 510, connecting to the interior of the rod 200, as shown by the arrows in Figures 16 and 18. The outer casing 102 also includes an air intake cover 130 fitted over the air intake 120. The air intake cover 130 has a through hole 131 connecting to the air intake hole 140, serving as a dustproof and protective element.

The photothermal hair styling device also includes a blower assembly connected to the power supply assembly, which is disposed within the ventilation path. When the photothermal hair styling device is used to heat and curl the hair, and the blower mode is activated, the blower assembly circulates air within the ventilation path and blows cool air onto the hair, rapidly lowering the hair temperature. This creates a rapid temperature difference between hot and cold in the curled hair, which is beneficial for hair styling. The blower assembly can be a fan or a blower 600, as shown in Figures 17 and 18.

Please refer to Figure 19. The difference between Embodiment 9 and Embodiment 8 of the photothermal hair styling device of this application is that the dual-head electrode lamp tube 300 of the light source is replaced with a single-head electrode lamp tube 301.

Please refer to Figures 20-34, which depict embodiments ten to fourteen of the photothermal hair styling device of this application. Figures 20-25 are schematic diagrams of embodiment ten and its combination with the aforementioned feature variations. The photothermal hair styling device includes a housing 102, a rod 201, a light source assembly, and a power supply assembly. The power supply assembly includes a circuit board 400 disposed in the housing 102, a conductive female terminal 410 electrically connected to the circuit board 400, and a power line 420. An external power supply can be connected through the power line 420, and the external power is connected to the circuit board 400 through the conductive female terminal 410. The light source assembly is disposed within the receiving cavity 220 of the rod and is electrically connected to the power supply assembly. Please refer to Figures 21 and 22. The light source of the light source assembly adopts a double-headed electrode lamp tube 300, with a conductive sheet 310 on the lamp tube. The light emitted by the lamp tube can be emitted from the rod 201 at an angle of 360 degrees. Alternatively, the light source of the light source assembly can also adopt a single-headed electrode lamp tube 301, as shown in Figure 25.

The rod 201 is fixedly installed together with the outer shell 102, as shown in Figures 20, 21, and 25. A connecting ring 521 is provided at the connection between the rod 201 and the outer shell 102. A front protective sleeve 510 is provided at the front end of the rod 201, and a rear protective sleeve 520 is also provided at the rear end connection. Alternatively, the rod 201 and the outer shell 102 are detachably installed together via a threaded connection, as shown in Figures 22 and 23. A connecting seat 530 is provided at the end of the rod 201 connected to the body portion 110 of the outer shell. The connecting seat 530 has external threads, and the connection point of the body portion 110 of the outer shell has internal threads (not shown). The two are installed and fixed together but can be disassembled. A ventilation hole 532 is provided at the end of the connecting seat 530 facing the outer shell 102. The ventilation hole 532 connects the accommodating cavity 220 inside the rod 201 and the air outlet 210, allowing airflow between the internal spaces of the rod 201 and the outer shell 102.

The outer casing 102 includes a main body 110 and an air inlet 120. The air inlet 120 is provided with an air inlet hole 140, which allows outside air to enter the hair styling tool and connect to the rod body 201. The outer casing 102 also includes an air inlet cover 130 sleeved on the air inlet 120. The air inlet cover 130 is provided with a through hole 131 that connects to the air inlet hole 140. The air inlet cover 130 can play a role in dust prevention and protection.

The rod body 201 is provided with an air outlet 210, which penetrates the side wall of the rod body 201 radially and connects to the air inlet 140 to form a ventilation path. This ventilation path allows air to circulate inside the photothermal hair styling device, which can both dissipate heat from internal components and lower hair temperature when needed. The air inlet 120, located at the rear of the outer casing 100, can be configured in terms of area. The shape, distribution pattern, and opening direction of the air outlet 210, air inlet 140, and perforations 131 are not limited; they can be round holes, square holes, other geometric shapes, slots, etc. They can be evenly distributed or densely distributed in certain areas. The design, including variations in aperture, distribution density, and shape, can be tailored to the specific air intake and exhaust requirements of different parts, ensuring that the gas flow direction, speed, and smoothness meet actual needs. In this embodiment, the air inlet 140 is a narrow slot that extends axially and is distributed circumferentially at the rear of the outer casing 100; the through hole 131 is a round hole that is basically evenly distributed on the air inlet cover 130; and the air outlet 210 is an array of long slots that extend axially and are distributed circumferentially on the rod body 201.

The ventilation path connecting the perforation 131, air inlet 140, and air outlet 210 allows air circulation inside the photothermal hair styling device, which can lower the hair temperature when needed, as shown in Figure 22 where air flows in the direction of the arrow. The addition of a fan 600, electrically connected to the main circuit board 400 within the outer casing 102, accelerates airflow, enabling rapid cooling and styling after heating and curling. The air outlet angle surrounds the rod 201 in a 360-degree direction, ensuring even and effective airflow, as shown in Figure 24 (illustration of the air outlet angle).

Please refer to Figures 26 and 27. In Embodiment Eleven, the rod 202 of the photothermal hair styling device is detachably connected to the main body 110 of the outer casing 102. The rod 202 has an air outlet 212 that penetrates the side wall of the rod 202 and connects to the air inlet 140 to form a ventilation path. This ventilation path allows air to circulate inside the photothermal hair styling device, which can both dissipate heat from internal components and lower hair temperature when needed.

The air outlet 212 penetrates the side wall of the rod 202 at a certain angle to the radial direction of the rod 202, as shown in Figure 27. The angle is 0~90° or 0°~-90°. Generally, the angle between the penetration direction and the radial direction of the rod is selected as 10°~70° or 0°~-70°, which can be designed according to actual needs. The preferred angle is between 15~60°. The penetration angle is the air outlet angle. The output low-temperature airflow can cool the hair wrapped around the outer periphery of the rod 202. Selecting an angle between 15~60° can make the airflow flow evenly over the hair wrapped around the surface of the rod, and the flow rate will not be too slow, so as to efficiently and evenly cool the hair. The direction in which the air outlet 212 penetrates the side wall of the rod 202 can be tangent to the inner side wall of the rod 202. The air outlet 212 extends axially and multiple air outlets 212 are arranged in an array circumferentially. As shown in the air outlet schematic diagram in Figure 27, the direction in which the air outlet 212 penetrates the side wall of the rod 202 is offset in a clockwise direction relative to the radial direction, and the air outlet 212 forms a clockwise rotating air outlet effect.

Please refer to Figures 28 and 29. In Embodiment Twelve, the rod 203 of the photothermal hair styling device is detachably connected to the main body 110 of the outer casing 102. The rod 203 is provided with an air outlet 213, which penetrates the side wall of the rod 203. The direction in which the air outlet 213 penetrates the side wall of the rod 203 forms a certain angle with the radial direction of the rod 203. The difference from Embodiment Eleven is that the direction in which the air outlet 213 penetrates the side wall of the rod 203 is opposite to that in Embodiment Eleven. The direction in which the air outlet 213 penetrates the side wall of the rod 203 is offset counterclockwise along the relative radial direction. The air outlet 213 forms a counterclockwise rotating air outlet effect, as shown in Figure 29.

Please refer to Figures 30-34, which are schematic diagrams of Embodiments 13 and 14. In Embodiment 13, the rod 204 of the photothermal hair styling device is fixedly connected or detachably connected to the main body 110 of the outer shell 102. The light source is a single-head electrode lamp tube 301. The rod 204 is provided with an air outlet 214, which penetrates the side wall of the rod 204. The penetration direction of the air outlet 214 through the side wall of the rod 204 forms a certain angle with the radial direction of the rod 204. At the same time, the direction of the air outlet 214 extending longitudinally along the rod forms an angle with the axis of the rod 204. The angle between the direction of the air outlet extending longitudinally along the rod and the axis of the rod is 0°~70° or 0°~-70°. Furthermore, the air outlet 214 can be a straight groove or an arc groove. After multiple air outlets 214 penetrate the rod body 204, the arrangement of them on the outer peripheral surface of the rod body can be an inclined straight line array, an arc array, or a spiral array. The direction in which the air outlets 214 penetrate the side wall of the rod body 204 is staggered in a clockwise direction relative to the radial direction, and the air outlets 214 form a clockwise rotating air outlet effect.

Please refer to Figures 33 and 34. In Embodiment Fourteen, the rod 205 of the photothermal hair styling device is fixedly connected to the main body 110 of the outer shell 102. The extension direction of the air outlet 215 forms an angle with the axial direction of the rod 205. Embodiment Fourteen differs from Embodiment Thirteen in that the extension direction of the air outlet 215 forms an angle with the axial direction of the rod 205 in the opposite direction to that in Embodiment Thirteen. The direction in which the air outlet 215 penetrates the side wall of the rod 205 is offset in a counterclockwise direction relative to the radial direction. The air outlet 215 forms a counterclockwise rotating air outlet effect.

The photothermal hair styling device of this application heats and curls hair, and then cools it down with a cooling and ventilation design. The combination of rapid heating and rapid cooling can achieve rapid temperature difference styling.

In some embodiments, a filter element is provided before the light emitted from the light source; or a filter film is coated on the surface of the lamp tube 300, the inner surface of the tube, or the outer surface of the tube; or a filter film is provided between the tube and the light source; or the tube is made of a filterable crystal. The photothermal hair styling device of this application can also use different wavelengths of light to treat the hair/scalp. Different wavelengths can be achieved by changing the light source to emit different wavelengths, or by filtering the light before it is emitted from the light source using a filter element, or by coating the surface of the lamp tube 300 to select a desired single wavelength (e.g., 900-1800nm, 380-450nm, or 600-750nm), or by coating multiple wavelengths: selecting two or more light wave ranges (e.g., 380nm, 40 ... (-450nm+900-1800nm), films of different wavelengths are deposited on the surface of the lamp tube 300 in different directions, or films of different wavelengths are deposited on the surface of the lamp tube 300 at different positions along the axial direction; or films are deposited on the tube body, or a filterable crystal is selected as the tube body, and the required single wavelength band (such as 900-1800nm or 380-450nm or 600-750nm) can be selected, or two or more light wave ranges can be selected to deposit multi-band films (such as 380-450nm+900-1800nm). Different wavelengths of light have different phototherapy effects on hair/scalp. For example, near-infrared wavelengths (900-2500nm) can stimulate blood circulation in the head; red light (600-750nm) can regulate biochemical enzymes in the scalp and hair follicles, such as affecting 5-α reductase in male pattern baldness and tyrosinase in gray hair; protein is the main component of hair, and red light can enhance the synthesis of ribonucleic acid in human tissue cells, thereby enhancing protein synthesis, which is beneficial for hair growth and increases hair density and elasticity; 420nm light can inhibit the growth of Malassezia and improve folliculitis.

This photothermal hair styling device utilizes the photothermal effect, employing the thermal energy of light and spatial radiation to eliminate the problems of conduction and conduction efficiency of intermediate media, allowing the hair to be heated quickly and instantly to achieve the effect of curling/straightening hair; at the same time, it utilizes the effect of a life light source to assist in hair styling and therapy; the light source heating is also less likely to burn the hair.

In addition, the cooling effect can be combined. When the hair is heated and curled using the photothermal hair styling device, the blow-drying mode is turned on. The blow-drying component drives the air to circulate in the ventilation path and blows the cool air onto the hair, which can quickly lower the hair temperature and create a rapid temperature difference between hot and cold after curling, which is beneficial for hair styling.

Different wavelengths of light have different phototherapy effects on hair/scalp. For example, near-infrared wavelengths (900-2500nm) can stimulate blood circulation in the head; red light (600-750nm) can regulate biochemical enzymes in the scalp and hair follicles, such as affecting 5-α reductase in male pattern baldness and tyrosinase in gray hair; protein is the main component of hair, and red light can enhance the synthesis of ribonucleic acid in human tissue cells, thereby enhancing protein synthesis, which is beneficial for hair growth and increases hair density and elasticity; 420nm light can inhibit the growth of Malassezia and improve folliculitis.

The above description is only a preferred embodiment of this application. The scope of protection of this application is not limited thereto. Any equivalent transformation based on the technical solution of this application shall fall within the scope of protection of this application.

Claims (19)

A photothermal hair styling device is characterized in that it includes a rod body, a light source assembly, and a power supply assembly. The light source assembly is disposed in the rod body and electrically connected to the power supply assembly. The light source assembly includes a light source, and the light emitted by the light source can be emitted from the rod body. The photothermal hair styling device as described in claim 1 is characterized in that the rod body is made of a light-transmitting material. The photothermal hair styling device as described in claim 2 is characterized in that the rod is a light-transmitting crystal made of any one of sapphire, quartz, or high borosilicate. The photothermal hair styling device as described in claim 1 is characterized in that the rod body is provided with a light-transmitting hole. The photothermal hair styling device as described in claim 1 is characterized in that the rod body has a receiving cavity, and the light source assembly is disposed in the receiving cavity and electrically connected to the power supply assembly. The photothermal hair styling device as described in claim 1 is characterized in that it further includes a housing, the power supply assembly is disposed within the housing, and the rod is fixedly or detachably installed together with the housing. The photothermal hair styling device as described in claim 6 is characterized in that the outer shell includes a main body and an air inlet, and the air inlet is provided with an air inlet hole. The photothermal hair styling device as described in claim 7 is characterized in that the air inlet is covered with an air inlet cover, and the air inlet cover has a perforation communicating with the air inlet hole. The photothermal hair styling device as described in claim 7 or 8 is characterized in that the rod body is provided with an air outlet, and the air outlet is connected to the air inlet to form a ventilation path. The photothermal hair styling device as claimed in claim 9 is characterized in that it further includes a hair dryer assembly connected to the power supply assembly, the hair dryer assembly being disposed in the ventilation path. The photothermal hair styling device as described in claim 6 is characterized in that the air outlet penetrates the side wall of the rod body, and the penetration direction is along the radial direction of the rod body, or the penetration direction forms an angle with the radial direction of the rod body. The photothermal hair styling device as described in claim 6 is characterized in that the air outlet penetrates the side wall of the rod, and the angle between the penetration direction and the radial direction of the rod is 0°~90° or 0°~-90°. The photothermal hair styling device as described in claim 12 is characterized in that the angle between the penetrating direction and the radial direction of the rod is 10°~70° or 0°~-70°. The photothermal hair styling device as described in claim 6 is characterized in that the air outlet penetrates the side wall of the rod body, and the air outlet extends longitudinally along the rod body, with the extension direction intersecting the axis of the rod body. The photothermal hair styling device as described in claim 14 is characterized in that the angle between the air outlet extending longitudinally along the rod body and the rod body axis is 0°~70° or 0°~-70°. The photothermal hair styling device as described in claim 1 is characterized in that a filter element is provided between the light source and the rod. The photothermal hair styling device as described in claim 1 is characterized in that the light source is a lamp tube, and a filter film is coated on the surface of the lamp tube; or a filter film is coated on the rod body. The photothermal hair styling device as described in claim 1 is characterized in that the rod body is made of a light-filtering crystal. The photothermal hair styling device as described in claim 1 is characterized in that the light source is a dual-head electrode lamp tube or a single-head electrode lamp tube.