CN111765125A - hanging neck fan - Google Patents

Abstract

The invention discloses a neck hanging fan which comprises a body and a fan arranged in the body, wherein the body comprises a support which can be worn at the neck of a user, an air channel corresponding to the fan is formed in the support, an air outlet communicated with the air channel is formed in the support, the air channel guides airflow blown out by the fan to the air outlet, and the size of the cross section of the air channel, close to the air outlet, is smaller than the size of other parts. So, through being close to in the cross section in wind channel the size design of air outlet department is for being less than the size of other parts, when the air current that flows along the wind channel flows from the air outlet, receives the extrusion that is close to the surface of air outlet department and will accelerate and flow out from the air outlet to wind-force is bigger, can effectively give user's neck department cooling fast.

Description

hanging neck fan

technical field

The present invention relates to the technical field of portable fans, in particular to a neck hanging fan.

Background technique

In recent years, people are increasingly pursuing a more convenient life. In order to meet the needs of using fans in outdoor activities or other life scenarios, various portable fans have appeared on the market, such as neckband fans. The emergence of the neckband fan solves the limitation of activities brought by the hand-held fan. Whether it is sports, outdoor activities or office use scenarios, the neckband fan can free the user's hands, and can be used to blow air anytime, anywhere without holding hands. Effect.

The neckband fan is usually provided with an air outlet around the neck, so that the wind of the neckband fan can blow to the neck to increase the cooling capacity. However, the air outlet around the neck is separated from the fan by a certain distance, and the wind force flowing out from the air outlet is small, which often cannot meet the requirement of rapid cooling for users.

SUMMARY OF THE INVENTION

In order to solve the existing technical problems, the present invention provides a hanging neck fan that has a large output force and can effectively and quickly cool down the user's neck.

In order to achieve the above-mentioned purpose, the technical scheme of the embodiment of the present invention is realized as follows:

A neck hanging fan includes a main body and a fan arranged in the main body, the main body includes a bracket that can be worn on the neck of a user, an air duct corresponding to the fan is formed in the bracket, and the bracket There is an air outlet communicating with the air duct, the air duct guides the airflow blown by the fan to the air outlet, and the size of the cross section of the air duct near the air outlet is smaller than that of other parts. size.

Wherein, the bracket is also provided with an inner shell, the inner shell extends along the length direction of the bracket, and its cross section is annular, the air duct is formed in the inner shell, and the inner shell corresponds to The position of the air outlet is provided with an opening communicating with the air outlet.

Wherein, the bracket includes a first casing and a second casing, the first casing includes an inner side facing the user's neck and a first casing that is bent and extended from opposite ends of the inner side to the second casing Folded edge and second folded edge, the air outlet is provided on the first folded edge of the top end of the first shell; the air duct is close to the inner side and the side of the first folded edge The wall is formed with a squeezing convex surface that protrudes toward the inside of the air duct, and/or the inner surface of the inner shell away from the inner side and close to the first folded edge is formed to be convex toward the inside of the air duct Out of the squeezing convex surface.

Wherein, the side of the squeezing convex surface away from the air outlet is an inclined surface extending downward in a direction away from the air outlet.

Wherein, the end of the air duct close to the fan is an air inlet, the cross-sectional dimension of the air duct corresponding to the air inlet is larger than that of other parts, and the side wall at the air inlet is at least partially formed as Sloped wind guide surface.

Wherein, the bracket includes a first shell and a second shell, the bracket is provided with a partition extending along its length direction, and the partition is located in the first shell and the second shell In between, the outer surface of the inner shell is in contact with the inner surface of the partition plate and the bracket, respectively.

Wherein, the bracket includes a first shell and a second shell, the first shell includes a middle region, and a first edge region and a second edge region respectively located on the upper and lower sides of the middle region, the first edge region The air outlets are respectively provided on the edge region and the second edge region; the inner shell is formed close to the first shell and the inner surfaces of the first edge region and the second edge region are respectively formed There is a squeezing convex surface that protrudes toward the inside of the air duct, and/or the inner surface of the inner shell is close to the second shell and close to the first edge region and the second edge region, respectively A squeezing convex surface protruding toward the inside of the air duct is formed.

Wherein, the bracket includes a first shell and a second shell, the first shell includes a middle region, and a first edge region and a second edge region respectively located on the upper and lower sides of the middle region, the first edge region The air outlets are respectively provided on the edge region and the second edge region; the inner surfaces of the first casing near the first edge region and the second edge region are respectively formed with air ducts facing the air ducts. The inner protruding squeezing convex surface, and/or the inner surface of the second shell near the first edge region and the second edge region are respectively formed with squeezing protruding towards the inside of the air duct. Wind raised surface.

Wherein, the air duct is provided with an air guide plate extending along the length direction of the air duct, and the air guide plate separates the air duct to form at least two flow channels.

Wherein, the volumes of the at least two flow channels are not equal, the wind deflector is in a curved shape, and the air channel is further provided with a flow guide plate located at the airflow inlet of the flow channel with a larger volume; The bending direction of the baffle is opposite to the bending direction of the wind deflector, or the baffle is inclined, and the end of the baffle close to the fan is closer to the end of the baffle far from the fan closer to the wind deflector.

The neck hanging fan provided by the above-mentioned embodiment has a body including a bracket that can be worn on the user's neck, an air duct corresponding to the fan is formed in the bracket, and a fan connected to the air duct is provided on the bracket. The air outlet, the air duct guides the air flow blown by the fan to the air outlet, the size of the cross section of the air duct near the air outlet is smaller than the size of other parts, so, by dividing the cross section of the air duct into the air outlet The size near the air outlet is designed to be smaller than the size of other parts. When the airflow flowing along the air duct flows out of the air outlet, it will be squeezed by the surface close to the air outlet, which will accelerate the flow out of the air outlet, so that the wind will be stronger. , which can effectively and quickly cool the user's neck.

Description of drawings

1 is a schematic diagram of a neck hanging fan in an embodiment of the application;

Fig. 2 is an exploded view of the hanging neck fan in Fig. 1;

Fig. 3 is the cross-sectional schematic diagram of the bracket of the hanging neck fan in Fig. 1;

4 is a schematic diagram of an inner shell in an embodiment of the application;

Figure 5 is a cross-sectional view of the inner casing in Figure 4;

6 is a schematic diagram of a neck hanging fan in another embodiment of the application;

Figure 7 is an exploded view of the hanging neck fan in Figure 6;

8 is a schematic diagram of an inner shell in another embodiment of the application;

Figure 9 is a cross-sectional view of the inner casing shown in Figure 8;

FIG. 10 is a schematic cross-sectional view of the inner shell in yet another embodiment of the application;

11 is a schematic diagram of an inner shell in yet another embodiment of the application;

FIG. 12 is a cross-sectional view of the inner case shown in FIG. 11 .

Detailed ways

The technical solutions of the present invention will be further elaborated below with reference to the accompanying drawings and specific embodiments of the description. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. In the following description, reference is made to the expression "some embodiments", which describe a subset of all possible embodiments, but it is to be understood that "some embodiments" can be the same subset or a different subset of all possible embodiments sets and can be combined with each other without conflict.

It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical", "horizontal", "inner", "outer", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

Please refer to FIG. 1 and FIG. 2 , an embodiment of the present application provides a neck hanging fan, including a main body 10 and a fan 20 disposed in the main body 10 , and the main body 10 includes a bracket that can be worn on the neck of a user 11. An air duct 120 corresponding to the fan 20 is formed in the bracket 11 , an air outlet 13 communicated with the air duct 120 is formed on the bracket 11 , and the air duct 120 blows the fan 20 out The air flow is directed to the air outlet 13, and the dimension of the side close to the air outlet 13 in the cross section of the air duct 120 is smaller than that of the other parts.

In the embodiment of the present application, the body 10 includes a bracket 11 that can be worn on the neck of a user, an air duct 120 corresponding to the fan 20 is formed in the bracket 11 , and an air duct 120 corresponding to the fan 20 is formed on the bracket 11 The air outlet 13 communicated with 120 , the air duct 120 guides the air flow blown by the fan 20 to the air outlet 13 . The size of the cross section of the air duct 120 on the side close to the air outlet 13 is designed to be smaller than the size of the other parts. The squeezing of the surface will accelerate the outflow from the air outlet 13, so that the wind will be stronger, which can effectively and quickly cool down the neck of the user.

Wherein, the bracket 11 is further provided with an inner shell 12, and the air duct 120 is formed in the inner shell 12. In this embodiment, the inner shell 12 is integrally formed. In other embodiments, The inner shell 12 can also be assembled from two parts, and the bracket 11 can be provided with an air outlet 13 only on one side, so that the cross-sectional dimension of the air duct 120 is provided with the outlet from the opposite side. One side of the air outlet 13 is gradually reduced, so that the size of the cross section of the air duct 120 near the air outlet 13 is smaller than that of other parts; The cross-sectional size of the air duct 120 decreases from the center to the two sides where the air outlet 13 is provided, so that the size of the cross-section of the air duct 120 near the air outlet 13 is smaller than that of other parts. In addition, the cross-section of the air duct 120 can be formed so that the size near the air outlet 13 is smaller than that of other parts. The inside of the air duct 120 is protruded by the squeezing convex surface 122 to change the concave-convex shape of the side wall of the air duct 120 so that the cross-sectional dimension of the air duct 120 near the air outlet 13 is smaller than that of other parts. Alternatively, the inner shell 12 may be integrally formed into a shape in which the cross-sectional dimension near the air outlet 13 is smaller than the cross-sectional dimension of the other parts, at this time, the part of the inner shell 12 can be regarded as the whole facing the wind. The inside of the channel 120 is convex to form a squeezing convex surface.

Optionally, the bracket 11 is composed of three detachably connected sections, including a middle section and a first section and a second section connected to opposite ends of the middle section, the middle section, the first section and the second section are common. To form an arc shape that can be worn on the user's neck, the middle section is preferably made of a bendable and deformable structure or material. The fan 20 is arranged at the ends of the first and second sections away from the middle section, the first section and the second section are respectively provided with the air outlet 13, and the first and second sections are provided with the air outlet 13 respectively. The inner casings 12 for guiding the wind of the corresponding fans 20 to the corresponding air outlets 13 are respectively provided in the sections. The inner shell 12 extends along the length direction of the bracket 11 , and its cross section is annular. The inner shell 12 is provided with an opening 121 communicating with the air outlet 13 corresponding to the position of the air outlet 13 . Optionally, the air outlet 13 includes a plurality of air outlet holes arranged at intervals along the length direction of the bracket 11 . The position and shape of the air holes correspond. The air duct 120 is formed in the inner casing 12 , which can make the air duct 120 gather more wind, and the shape and size of the air duct 120 can be adjusted by replacing the inner casing 12 without replacing the bracket 11 as a whole.

Wherein, the first section and the second section of the bracket 11 respectively include a first shell and a second shell which are assembled and snap-connected to each other, and the first shell includes an inner side facing the user's neck and a second shell from the The first folded edge and the second folded edge that the opposite ends of the inner side are bent and extended toward the second shell, the air outlet 13 is formed on the first folded edge of the top end of the first shell; The side wall of the air duct 120 near the inner side and near the first folded edge is formed with a squeezing convex surface 122 protruding toward the inside of the air duct 120 . The side of the squeezing convex surface 122 away from the air outlet 13 is an inclined surface extending in a direction away from the air outlet 13, which can guide the airflow and reduce the airflow resistance; optional, The air duct 120 may also be formed with a squeezing convex surface protruding toward the inside of the air duct 120 on the side wall away from the inner side and close to the first folded edge. Please refer to FIG. 3 to FIG. 5 , when the neck hanging fan is worn, the inner side of the first casing is in contact with the skin of the user's neck, and the first folded edge faces the user's head, wherein the first folded edge and the The included angle between the inner sides is an obtuse angle or equal to 90 degrees, and the air outlet 13 is arranged on the first folded edge, so that the air outlet 13 can be directly blown to the user's head and face, thereby improving the cooling performance of the hanging neck fan. The inner surface of the inner shell 12 close to the inner side and the first folded edge is formed with a squeezing convex surface 122, and the squeezing convex surface 122 makes the size of the cross section of the inner shell 12 close to the air outlet 13 relative to each other. Small, the squeezing convex surface 122 is a smooth curved surface, when the air flow from the fan 20 into the air duct 120 flows to the air outlet 13, the path becomes narrower when it flows through the squeezing convex surface 122, and the same air volume is at the same The wind flows out from the air outlet 13 in a unit time, so that the wind speed increases. In this way, the arrangement of the wind-squeezing convex surface 122 can increase the wind force of the air outlet 13 .

Optionally, the bracket 11 is provided with a partition plate 14 extending along its length direction, the partition plate 14 is connected between the first shell and the second shell, and the inner shell 12 The outer surfaces of the separators 14 are in contact with the inner surfaces of the baffle 14 and the bracket 11 respectively. The extending direction of the partition plate 14 is substantially the same as the extending direction of the first folding edge and the second folding edge. Between the folded edges, another part is formed between the partition plate 14 and the second folded edge, and the partition plate 14 can reduce the volume of the space of the air duct 120 in the bracket 11 . The inner shell 12 is accommodated in the space between the partition plate 14 and the first folded edge. The partition plate 14 can limit the movement range of the inner shell 12 in the bracket 11, and has a positioning effect on the inner shell 12. The airflow blown by the fan 20 enters The inlet of the air duct 120 is formed between the partition plate 14 and the first folded edge, so the arrangement of the partition plate 14 can also make the wind blowing toward the air outlet 13 more concentrated after entering the air duct 120 .

One end of the inner casing 12 close to the fan 20 is an air inlet 123 , the cross-sectional dimension of the air duct 120 corresponding to the air inlet 123 is larger than that of other parts, and the side wall of the air inlet 123 The wind guide surface 125 is formed at least partially as an inclined wind guide surface. The wind guide surface 125 is inclined from the end close to the fan 20 to the inside of the air duct 120, so that the cross-sectional size of the inner shell 12 at the wind guide surface 125 is gradually reduced from the outside to the inside, so as to guide the airflow of the fan 20 toward the wind. The role of the channel 120 inside. The body 10 further includes an end casing 15 connected to the bracket 11 , the battery 40 and the circuit board (not shown) are disposed in the end casing 15 , and the end of the bracket 11 is formed with In the accommodating cavity corresponding to the end housing 15 , the fan 20 is located in the accommodating cavity formed at the end of the bracket 11 . The end case 15 is protruded from the surface of the second case, and the distance between the first case and the second case of the bracket 11 is not affected by the thickness of the battery 40 through the arrangement of the end case 15 . Therefore, it is convenient to reduce the overall thickness of the part of the bracket 11 except for the end housing 15, thereby improving the light and thin performance.

In the above-mentioned embodiments of the present application, the neck-mounted fan is formed by adding an inner shell 12 in the main body 10 to form an air duct 120, and a squeezing convex surface 122 is formed in the air duct 120, so as to effectively increase the wind power of the air outlet 13 disposed at the neck. , to enhance the ability of the hanging neck fan to quickly cool the user's neck, head and face. In other embodiments, the inner shell 12 may not be provided, that is, the first shell and the second shell are connected together to form a joint the air duct 120. It should be noted that, under the teaching of the above-mentioned technical concept, the arrangement of the inner shell 12 and the wind-squeezing convex surface 122 is not limited to the above-mentioned embodiment of the present application, and can be adjusted according to the structure of different neck fans.

As shown in FIG. 6 to FIG. 10 , the neck hanging fan provided by another embodiment of the present application, the main differences between the fan and the previous embodiment are described as follows.

The first section and the second section of the bracket 31 respectively include a first shell and a second shell, and the first shell includes a middle region and a first edge region and a second edge respectively located on the upper and lower sides of the middle region. The first edge region and the second edge region are respectively provided with the air outlet 33, wherein the first edge region and the second edge region of the first shell are respectively from the upper and lower sides of the middle region. The second casing is formed to extend smoothly. Since the first edge region and the second edge region are respectively provided with the air outlet 33, the inner surface of the inner shell 32 is respectively formed with a squeezing convex surface 322 near the first edge region and the second edge region. In a specific optional embodiment, the squeezing convex surface 322 is correspondingly formed on the inner shell 32, that is, the inner shell 32 is close to the first shell and close to the first edge region and the second edge region. A squeezing convex surface 322 protruding toward the inside of the air duct 320 is respectively formed on the inner surface at the edge region, and/or the inner shell 32 is close to the second shell and close to the first edge region A squeezing convex surface 322 protruding toward the inside of the air duct 320 is formed on the inner surface of the air channel 320 and the inner surface of the second edge region, respectively. In other embodiments, when the inner shell 32 is not provided and the air duct 320 is directly formed between the first shell and the second shell, the first shell is close to the first edge The inner surfaces of the area and the second edge area are respectively formed with a squeezing convex surface 322 that protrudes toward the inside of the air duct 320 . Optionally, the inner surfaces of the second casing near the first edge region and the second edge region are also respectively formed with a squeezing convex surface 322 protruding toward the inside of the air duct 320 .

In this embodiment, the shape of the partition plate 34 is substantially the same as the shape of the first shell and the second shell, and is generally parallel to the first shell and the second shell, and the partition plate 34 follows the The length direction of the bracket 31 extends to divide the bracket 31 into two parts, one part is formed between the partition plate 34 and the first casing, and the other part is formed between the partition plate 34 and the second casing. Similarly, the arrangement of the partition plate 34 can reduce the volume of the space of the air duct 320 in the bracket 31. The inner shell 32 is accommodated in the space between the partition plate 34 and the first shell, and the partition plate 34 can limit the inner shell 32 to the bracket. The movement range in 31 plays a role in positioning the inner shell 32, and the inlet of the air blown by the fan 20 into the air duct 320 is formed between the partition plate 34 and the first shell, so that the setting of the partition plate 34 can also make the incoming air flow. The wind blowing toward the air outlet 33 after the passage 320 is more concentrated.

Optionally, the inner shell 32 may be formed with a squeezing protruding surface 322 only close to the inner surface of the first shell, or may be adjacent to the inner surfaces of the first shell and the second shell on opposite sides respectively. A squeezing protruding surface 322 is formed near the first edge region and the second edge region, that is, the inner surface of the inner shell 32 close to the first shell is a curved surface with a low middle and high sides, and the inner surface is The inner surface of the shell 32 close to the second shell is a curved surface with a low middle and high sides, so that the air duct 320 in the center of the inner shell 32 is formed to be wide in the middle and narrow on both sides. The dimensions of the two sides are smaller than the dimensions of the middle part. An inclined wind guide surface 325 is formed at one end of the inner casing 32 close to the fan 20 , and the wind guide surface 325 and the wind squeezing convex surface 322 can be smoothly connected by an arc-shaped transition surface 326 . The air outlet 33 includes a plurality of strip-shaped air outlet grooves arranged at intervals along the length direction of the bracket 31. Correspondingly, the shape and position of the opening 121 formed in the inner shell 32 are related to the air outlet grooves. shape and position.

In this embodiment, the bracket 31 does not include the end housing 15 , the partition plate 34 is fixed on the inner side of the second housing and forms a receiving space together with the second housing, where the battery 50 and the circuit board 60 are accommodated In the accommodating space, an accommodating cavity is directly formed at the end of the bracket 31 , and the fan 20 is disposed in the accommodating cavity. The battery 50 is directly accommodated in the accommodating space, so that the overall appearance of the hanging neck fan is more concise.

It should be noted that, under the technical concept of arranging an inner shell in the bracket, and forming a squeezing protrusion in the inner shell to face the airflow flowing out of the air outlet to increase the wind power, the structure and shape of the inner shell It is not limited to the structure and shape provided by the embodiment of the present application, and other changes are possible. Please refer to FIG. 11 and FIG. 12 , the inner casing 42 of the hanging neck fan provided by another embodiment of the present application, the inner casing 42 An air guide plate 43 extending along the length direction of the air duct 420 is provided inside, and the air guide plate 43 separates the air duct 420 to form at least two flow channels. Optionally, the volumes of the at least two flow channels are not equal. Among them, through the setting of the air deflector 43, the air flow in the different separated flow channels can be adjusted, and the pressure when the air flow in the different flow channels flows out of the air outlet can be adjusted, so that the air outlets on the opposite sides of the bracket can be adjusted to have different The wind is output, and the user can select the side with more wind to face the head or the neck and shoulders, or select the side with less wind to face the head or the neck and shoulders.

Optionally, the air guide plate 43 is in a curved shape. Specifically, in this embodiment, the air guide plate 43 is in an arc-shaped curved shape, and the air channel 420 further includes a flow channel with a larger volume. The deflector 45 at the airflow inlet, the bending direction of the deflector 45 is opposite to that of the wind deflector 43 . The inner shell 42 is provided with a guide fin 45 at the airflow inlet in the flow channel with a larger volume, and the bending direction of the guide fin 45 is opposite to the bending direction of the wind guide plate 43, which can guide the airflow to flow to the corresponding flow channel respectively. effect. As another optional embodiment, the deflector 45 is inclined, and the end of the deflector 45 close to the fan 20 is closer to the end of the deflector 45 than the end of the deflector 45 away from the fan 20 . The wind deflector 43 is used to guide the airflow into the corresponding flow channel.

In the neck hanging fan provided by the embodiment of the present application, by adding an inner shell 32 in the main body 10 to form an air duct 320, the air duct 320 can be made smaller in size and more wind can be collected; The size of the air outlet 33 is smaller than the size of other parts. When the airflow flowing along the air duct 320 flows out of the air outlet 33, it will be squeezed by the surface close to the air outlet 33 to accelerate the outflow from the air outlet 33, so that the wind force is larger. It can effectively and quickly cool down the neck of the user. Specifically, the air duct 320 is formed with a squeezing convex surface 322. When the airflow flowing along the air duct 320 flows out of the air outlet 33, it is squeezed by the squeezing convex surface 322. The acceleration will flow out from the air outlet 33, so that the wind force is larger, which can effectively and quickly cool down the neck of the user.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be included within the protection scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a hang neck fan, its characterized in that, includes the body and set up in this internal fan, the body is including the support that can be used to wear in user's neck department, be formed with in the support with the wind channel that the fan corresponds, be equipped with on the support with the air outlet of wind channel intercommunication, the wind channel will the air current direction that the fan blew out the air outlet, be close to in the cross section in wind channel the size of air outlet department is less than the size of other parts.

2. The neck hanging fan as claimed in claim 1, wherein an inner casing is further provided in the bracket, the inner casing extends along a length direction of the bracket, and has a circular cross section, the air duct is formed in the inner casing, and an opening communicating with the air outlet is provided at a position of the inner casing corresponding to the air outlet.

3. The hanging neck fan as claimed in claim 1 or 2, wherein the bracket comprises a first shell and a second shell, the first shell comprises an inner side facing the neck of the user and a first folding edge and a second folding edge extending from two opposite ends of the inner side to the second shell in a bending way, and the first folding edge at the top end of the first shell is provided with the air outlet; the air duct is close to the inner side and the side wall close to the first folding edge is formed with a protruding air squeezing protruding face facing the inner portion of the air duct, and/or the air duct is far away from the inner side and the side wall close to the first folding edge is formed with a protruding air squeezing protruding face facing the inner portion of the air duct.

4. The neck hanging fan as claimed in claim 3, wherein the side of the convex surface away from the air outlet is an inclined surface extending in a direction away from the air outlet.

5. The neck hanging fan as claimed in claim 1 or 2, wherein an air inlet is formed at one end of the air duct close to the fan, the cross-sectional dimension of the air duct corresponding to the air inlet is larger than that of the other part, and at least part of the side wall at the air inlet is formed into an inclined air guide surface.

6. The neckhanging fan of claim 2, wherein the bracket comprises a first housing and a second housing, a partition extending along a length of the bracket is disposed in the bracket and located between the first housing and the second housing, and an outer surface of the inner housing contacts the partition and an inner surface of the bracket, respectively.

7. The neck hanging fan as claimed in claim 2, wherein the bracket comprises a first shell and a second shell, the first shell comprises a middle area and a first edge area and a second edge area respectively positioned at the upper side and the lower side of the middle area, and the first edge area and the second edge area are respectively provided with the air outlet; the inner surface of the inner shell, which is close to the first shell and is close to the first edge area and the second edge area, is respectively provided with an air extruding convex surface protruding towards the inside of the air duct, and/or the inner surface of the inner shell, which is close to the second shell and is close to the first edge area and the second edge area, is respectively provided with an air extruding convex surface protruding towards the inside of the air duct.

8. The neck hanging fan as claimed in claim 1, wherein the bracket comprises a first shell and a second shell, the first shell comprises a middle area and a first edge area and a second edge area respectively positioned at the upper side and the lower side of the middle area, and the first edge area and the second edge area are respectively provided with the air outlet; the inner surfaces of the first shell close to the first edge area and the second edge area are respectively provided with a protruding wind extruding surface protruding towards the inside of the air duct, and/or the inner surfaces of the second shell close to the first edge area and the second edge area are respectively provided with a protruding wind extruding surface protruding towards the inside of the air duct.

9. The neck hanging fan as claimed in claim 7 or 8, wherein the air duct is provided with an air deflector extending along the length direction of the air duct, and the air deflector divides the air duct into at least two flow channels.

10. The hanging neck fan as claimed in claim 9, wherein the at least two flow passages have unequal volumes, the air deflector is curved, and a flow deflector is further disposed in the air passage at the airflow inlet of the flow passage having a larger volume; the bending direction of the flow deflector is opposite to that of the air deflector, or the flow deflector is inclined, and one end of the flow deflector, which is close to the fan, is closer to the air deflector than one end of the flow deflector, which is far away from the fan.

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