CN211314612U

CN211314612U - Neck fan

Info

Publication number: CN211314612U
Application number: CN201922016798.XU
Authority: CN
Inventors: 刘凯; 黄习昌; 赖国祥
Original assignee: Shenzhen Ranvoo Technology Co Ltd
Current assignee: Shenzhen Ranvoo Technology Co Ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-08-21
Anticipated expiration: 2029-11-20

Abstract

The utility model provides a neck area fan, including being used for wearing the arc support on human neck, be formed with the ventiduct in the arc support, the ventiduct sets up along the length direction of arc support, is equipped with air intake and air outlet on the arc support, air intake and air outlet all communicate with the ventiduct, the neck area fan still includes the alignment jig, the alignment jig sets up along the circumference of air intake, be equipped with the fan in the alignment jig, the fan corresponds the air intake setting to alignment jig movably connects on the arc support, and then adjusts the angle of the relative arc support of alignment jig. The utility model provides a neck area fan is through the angle of adjusting the alignment jig of setting on the arc support, and then realizes the position of nimble adjustment fan, has satisfied user's diversified demand.

Description

Neck fan

Technical Field

The utility model relates to a fan technical field especially relates to a neck area fan.

Background

In recent years, people are pursuing more convenient life, and various portable fans such as neck-band fans appear on the market in order to meet the requirement that the fans are needed to be used in outdoor activities or other life scenes. The activity limitation that handheld fan brought has been solved in appearance of neck belt fan, no matter be sports, outdoor activities or use scenes such as office, the both hands of user can all be liberated to the neck belt fan, need not handheld effect that can realize blowing anytime and anywhere.

The existing neck belt type fan generally adopts the mode that the fan is arranged inside the arc-shaped support in a mode that the fan is externally connected with the fan heads at the two ends of the arc-shaped support, the fan head of the fan is exposed outside the arc-shaped support, the defect is that hair is easily rolled into the fan, the defect of the latter is that the air blowing angle of the fan cannot be well adjusted, and the limitation is large, so that the product experience of a user is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a neck area fan sets up the angle of the alignment jig on the arc support through the regulation, and then realizes the position of nimble adjustment fan, has satisfied user's diversified demand.

The utility model provides a neck area fan, including being used for wearing the arc support on human neck, be formed with the ventiduct in this arc support, this ventiduct sets up along the length direction of this arc support, be equipped with air intake and air outlet on this arc support, this air intake and air outlet all communicate with this ventiduct, this neck area fan still includes the alignment jig, this alignment jig sets up along the circumference of air intake, be equipped with the fan in this alignment jig, this fan is to setting up by the air intake, and this alignment jig movably connects on this arc support, and then adjust the angle of this alignment jig relative this arc support.

Further, the arc-shaped support is provided with a first side wall and a second side wall, wherein the first side wall is far away from the neck, the second side wall is opposite to the first side wall, and the adjusting frame is rotatably connected to the first side wall or the second side wall.

Furthermore, a hinge structure is arranged between the adjusting frame and the end surface of the first side wall or the second side wall of the arc-shaped support, and one side edge of the adjusting frame is rotatably connected to the first side wall or the second side wall through the hinge structure.

Furthermore, one side of the adjusting frame is provided with a first connecting protrusion, the end face of the first side wall or the second side wall is provided with a connecting hole, and the adjusting frame and the arc-shaped support are rotatably hinged through the matching of the first connecting protrusion and the connecting hole.

Furthermore, a connecting piece is arranged between the adjusting frame and the end face of the first side wall or the second side wall of the arc-shaped support, one end of the connecting piece is rotatably connected to the arc-shaped support, the adjusting frame is rotatably connected to the other end of the connecting piece, and the adjusting frame can rotate relative to the arc-shaped support and the connecting piece through the connecting piece.

Furthermore, the connecting piece comprises a first rotating shaft part and a second rotating shaft part, one end of the first rotating shaft is vertically connected to the second rotating shaft part, the other end of the first rotating shaft part is connected with the end face of the first side wall or the second side wall, the adjusting frame is connected to the second rotating shaft part, the adjusting frame can rotate relative to the arc-shaped support by taking the first rotating shaft part as an axis, and can rotate relative to the second rotating shaft part by taking the second rotating shaft part as an axis.

Furthermore, the end face of the first side wall or the second side wall is provided with a mounting hole, the inner wall of the mounting hole is provided with a protrusion, one end of the first rotating shaft part is provided with a groove, one end of the first rotating shaft part is arranged in the mounting hole, the protrusion is positioned in the groove, the adjusting frame is matched with the mounting hole through the first rotating shaft part, and the first rotating shaft part is taken as a shaft and can rotate relative to the arc-shaped support; the second rotating shaft part is provided with a shaft hole, the adjusting frame is provided with a second connecting bulge, the adjusting frame is matched with the shaft hole through the second connecting bulge, and the second rotating shaft part is used as a shaft and can rotate relative to the second rotating shaft part.

Furthermore, the number of the adjusting frames is two, the number of the air inlets corresponding to the fans in the adjusting frames is two, the air inlets are respectively arranged at two ends of the arc-shaped support, and the adjusting frames are arranged on the end faces of the arc-shaped support corresponding to the air inlets.

Further, the air outlet is arranged along the length direction of the arc-shaped support, the arc-shaped support is further provided with a bottom wall and a top wall opposite to the bottom wall, the bottom wall and the top wall are connected between the first side wall and the second side wall, and the air outlet is arranged on the bottom wall, the top wall and/or the first side wall.

Further, this air outlet includes a plurality of exhaust vents, and a plurality of this exhaust vents set up along the length direction interval of this arc support, and perhaps this air outlet includes an exhaust vent, and this exhaust vent extends the setting along the length direction of this arc support.

The utility model provides a neck area fan, including being used for wearing the arc support on human neck, be formed with the ventiduct in the arc support, the ventiduct sets up along the length direction of arc support, be equipped with air intake and air outlet on the arc support, air intake and air outlet all communicate with the ventiduct, the neck area fan still includes the alignment jig, the alignment jig sets up along the circumference of air intake, be equipped with the fan in the alignment jig, the fan corresponds the air intake setting, and the alignment jig movably connects on the arc support, and then adjusts the angle of this alignment jig relative this arc support. The utility model provides a neck area fan is through the angle of adjusting the alignment jig of setting on the arc support, and then realizes the position of nimble adjustment fan, has satisfied user's diversified demand.

Drawings

Fig. 1 is a schematic structural view of a closed state of a neck with a fan according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 in another orientation;

fig. 3 is a schematic structural view illustrating an open state of a neck band fan according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of the disassembled structure of FIG. 3;

fig. 5 is a schematic structural view of a covering state of the neck with the fan according to the second embodiment of the present invention;

FIG. 6 is a schematic view of the structure of FIG. 5 in another orientation;

fig. 7 is a schematic structural view of an open state of a neck band fan according to a second embodiment of the present invention;

FIG. 8 is a schematic diagram of the disassembled structure of FIG. 7;

fig. 9 is a schematic structural view of a closed state of the neck with the fan according to the third embodiment of the present invention;

FIG. 10 is a schematic view of the structure of FIG. 9 in another orientation;

fig. 11 is a schematic structural view of an open state of a neck band fan in the third embodiment of the present invention;

fig. 12 is a schematic diagram of the disassembled structure of fig. 11.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Example one

As shown in fig. 1 to 4, the embodiment of the utility model provides a neck area fan, including being used for wearing arc support 1 on human neck, be formed with airway 2 in the arc support 1, airway 2 sets up along the length direction of arc support 1, be equipped with air intake 3 and air outlet 4 on the arc support 1, air intake 3 and air outlet 4 all communicate with airway 2, neck area fan still includes alignment jig 5, alignment jig 5 sets up along the circumference of air intake 3, be equipped with fan 50 in the alignment jig 5, fan 50 is rotated and is produced wind by the micro motor drive, fan 50 corresponds air intake 3 setting, and alignment jig 5 movably connects on arc support 1, and then adjust the angle of this alignment jig 5 relative this arc support 1.

In this embodiment, the air inlet is provided at an end position of the arc-shaped bracket, but not limited thereto. The neck belt fan comprises two using modes, one is that the adjusting frame 5 is arranged along the circumferential direction of the air inlet 3, and the extension line of the outer wall of the arc-shaped support 1 is superposed with the outer wall of the adjusting frame 5, namely, the neck belt fan is in a covering state; secondly, the adjusting bracket 5 can move relative to the arc-shaped bracket 1, namely, the adjusting bracket is in an opening state. Wherein the closed state and the open state refer to the position of the adjusting bracket 5 relative to the arc-shaped bracket 1. Specifically, the cross-sectional size of the adjusting bracket 5 is the same as that of the arc-shaped bracket 1.

When the air conditioner is in a covering state, as shown in fig. 1 and fig. 2, the adjusting frame 5 is coaxially arranged with the air inlet 3, the outer wall of the adjusting frame 5 abuts against the end face, close to the air inlet 3, of the arc-shaped support 1, and the outer wall of the adjusting frame 5 is just flush with the outer wall of the arc-shaped support 1. It is understood that the inlet 3 introduces the wind generated by the fan 50 into the air duct 2, and the fan 50 provided in the adjustment frame 5 communicates with the inlet 3 and sends the wind out of the outlet 4. It can be seen that the adjustment bracket 5 is a communicating structure that facilitates the introduction and discharge of airflow by the fan 50. When the adjustable stand is in the opened state, as shown in fig. 3 and 4, in this embodiment, the adjustable stand 5 rotates relative to the arc-shaped support 1, so that the position of the adjustable stand 5 can be set toward a position where heat dissipation is needed, for example, toward the face, and the function of blowing air toward the face by the fan 50 in the adjustable stand 5 is realized.

In some other embodiments, the air inlet 3 may also be disposed on a side wall of the arc support 1, and the adjusting bracket 5 is disposed on the side wall of the arc support 1 corresponding to the circumferential direction of the air inlet 3, it can be understood that the adjusting bracket 5 may protrude from an outer surface of the arc support 1, or be disposed inside the arc support 1 along an inner wall of the air inlet 3, which is not limited thereto. One side of the adjusting frame 5 can be connected to the arc-shaped support 1 through a hinge structure, that is, the adjusting frame 5 can rotate relative to the arc-shaped support 1, and the using mode also comprises a covering state and an opening state. The switching between the covering state and the opening state is realized by adjusting the rotation angle of the adjusting frame 5 relative to the arc-shaped support 1, when the adjusting frame 5 is in the covering state, the adjusting frame 5 is arranged along the circumferential direction of the air inlet 3, and air is sent out from the air outlet 4; when being in the open mode, the adjusting bracket 5 moves to required angle relative to the arc support 1, and the fan in the adjusting bracket 5 can blow towards the position needing heat dissipation to meet different requirements of users.

In some other embodiments, the adjusting bracket 5 may also be slidably disposed relative to the arc-shaped bracket 1, and may also be slid out relative to the arc-shaped bracket 1 or be accommodated in the arc-shaped bracket 1, wherein the air inlet 3 may also be disposed on a side wall or an end portion of the arc-shaped bracket 1, and the adjusting bracket 5 is disposed corresponding to a circumferential direction of the air inlet 3. Specifically, a sliding groove (not shown) may be formed in the arc-shaped support 1, the adjusting frame 5 may be slidably connected to the sliding groove, and the adjusting frame 5 may slide out relative to the sliding groove, that is, the surface of the arc-shaped support 1 is exposed, so as to blow air in the direction of the face. Or a ball head (not shown) is connected between the adjusting frame 5 and the arc-shaped support 1, and the adjusting frame 5 rotates in each direction through the ball head so as to rotate towards the face to blow and return.

In the present embodiment, as shown in fig. 1 to 4, the arc-shaped bracket 1 has a first side wall 11 facing away from the neck and a second side wall 12 disposed opposite to the first side wall 11, and it can be understood that the second side wall 12 is a side wall near the neck. In this embodiment, the adjusting bracket 5 is rotatably connected to the first sidewall 11, so that the adjusting bracket 5 can be closed or opened relative to the air inlet 3 of the arc-shaped bracket 1. When the cover is closed, the wind generated by the fan 50 is introduced into the air duct 2 through the air inlet 3 and then discharged through the air outlet 4; when the air conditioner is turned on, the air generated by the fan 50 is directly discharged from the direction aligned with the adjusting bracket 5 without passing through the air duct 2 and the outlet 4.

Specifically, the air outlet 4 is disposed along the length direction of the arc support 1. The arc-shaped bracket 1 further has a bottom wall (not shown), a top wall 13 opposite to the bottom wall, and the bottom wall and the top wall 13 are connected between the first side wall 11 and the second side wall 12. In order to better aim the wind generated by the fan 50 at the neck of the user for exhausting, the wind outlet 4 is disposed on the bottom wall, the top wall 13 and/or the first side wall 11 of the arc-shaped bracket 1 to realize blowing to the neck, thereby preventing sweat accumulation at the contact part with the neck.

In this embodiment, air outlet 4 includes a plurality of exhaust vents 41, and a plurality of exhaust vents 41 set up along the length direction interval of arc support 1, are located the roof 13 of arc support 1, and roof 13 is for towards user's neck direction, and outside air current is introduced from air intake 3 by fan 50, discharges from a plurality of exhaust vents 41 to reach the radiating purpose of neck. The air outlet holes 41 may also be disposed on the top wall 13 and the first side wall 11, specifically, the air outlet holes 41 extend from the top wall 13 to the first side wall 11 or the air outlet holes 41 are respectively opened on the top wall 13 and the first top wall 13; the air outlet 41 can also be arranged on the bottom wall of the arc-shaped bracket 1 contacted with the shoulder to realize the air blowing to the shoulder. The air outlet 41 may be a strip-shaped hole or a circular hole, and the shape of the air outlet 41 is not limited herein.

Or the air outlet 4 comprises an air outlet 41, the air outlet 41 extends along the length direction of the arc-shaped support 1, and the air outlet 41 is a long strip-shaped hole, that is, the aperture of the air outlet 41 extends from one end of the arc-shaped support 1 to the other end.

In this embodiment, a hinge structure 6 is disposed between the adjusting bracket 5 and the end surface of the first side wall 11 of the arc-shaped bracket 1, and one side of the adjusting bracket 5 is rotatably connected to the first side wall 11 through the hinge structure 6. When a user needs to realize the function of blowing air to the face in an open state, the adjusting bracket 5 and the first side wall 11 can rotate relatively by taking the hinge structure 6 as a rotating point, so that the relative position of the end face of the adjusting bracket 5 and the end face of the first side wall 11 can be adjusted. In this embodiment, as shown in fig. 4, a first connecting protrusion (not shown) is disposed on one side of the adjusting bracket 5, a connecting hole 62 is disposed on an end surface of the first side wall 11, the first connecting protrusion is disposed in the connecting hole 62, and the adjusting bracket 5 and the arc-shaped bracket 1 are rotatably hinged by the first connecting protrusion and the connecting hole 62 in a matching manner, that is, the adjusting bracket 5 rotates about an axis of the connecting hole 62. When the fan 50 is covered on the adjusting frame 5 and operates in the state of the arc-shaped support 1, if the fan is to be switched to an open state for use, the adjusting frame 5 is rotated towards the direction away from the neck by taking the axis of the connecting hole 62 as a rotating shaft, and the adjusting frame 5 is adjusted to be aligned with the face direction, so that the normal operation of the fan 50 is not affected.

In some other embodiments, the first connecting protrusion may also be disposed on the end surface of the first side wall 11, and the connecting hole 62 is disposed on one side of the adjusting bracket 5, so that the first connecting protrusion is disposed in the connecting hole 62, thereby realizing that the adjusting bracket 5 and the arc bracket 1 are rotatably hinged by the first connecting protrusion and the connecting hole 62.

In this embodiment, there are two adjusting frames 5, and there are two air inlets 3 corresponding to the fans 50 in the two adjusting frames 5, where the air inlets 3 are respectively disposed at two ends of the arc-shaped support 1, and the adjusting frames 5 are disposed on the end surface of the arc-shaped support 1 corresponding to the air inlets 3.

It should be mentioned that a controller (not shown), a battery (not shown) and a switch 7 are arranged in the arc-shaped support 1, the battery is electrically connected with the fan 50, the switch 7 is operated to send an operation signal to the controller, and the controller controls the on or off state of the fan 50. The battery is a rechargeable battery or a disposable battery which is arranged in the arc-shaped support 1, and the switch 7 is arranged on the outer wall of the arc-shaped support 1. Preferably, a battery heat insulation sheet (not shown) is further arranged in the arc-shaped support 1, and the battery heat insulation sheet is wrapped outside the battery and used for isolating heat of the battery and preventing the heat of the battery from being transferred to the neck.

The arc-shaped stent 1 may be made of a material having elastic restoring force, so that the arc-shaped stent 1 can be worn by holding both ends of the arc-shaped stent 1 to be spread, but not limited thereto.

Example two

The present embodiment is the same as the first embodiment, and the description of the same parts is omitted here, except that: as shown in fig. 5 to 8, the adjusting bracket 5 is rotatably connected to the second side wall 12, i.e. the side wall of the second side wall 12 close to the neck, and the adjusting bracket 5 can be closed or opened relative to the air inlet 3 of the arc-shaped bracket 1. A hinge structure 6 is arranged between the adjusting frame 5 and the end surface of the second side wall 12 of the arc-shaped support 1, and one side edge of the adjusting frame 5 is rotatably connected to the second side wall 12 through the hinge structure 6. When a user needs to realize the function of blowing air to the face in the opening state, the adjusting rack 5 and the second side wall 12 can be relatively rotated by taking the hinge structure 6 as a rotating point, so that the relative position of the end surfaces of the adjusting rack 5 and the second side wall 12 can be adjusted. In this embodiment, one side of the adjusting bracket 5 is provided with the first connecting protrusion 61, the end surface of the second side wall 12 is provided with the connecting hole, the first connecting protrusion 61 is arranged in the connecting hole, the adjusting bracket 5 and the arc-shaped support 1 are rotatably hinged through the matching of the first connecting protrusion 61 and the connecting hole, namely, the adjusting bracket 5 rotates by taking the axis of the connecting hole as a rotating shaft.

Since the hinge structure 6 is located on the end surface of the second side wall 12, the rotation direction of the adjusting bracket 5 is opposite to the rotation direction in the first embodiment, and in order to prevent the side surface of the fan 50 used in the closed state from sucking air from facing the face when the adjusting bracket 5 is in the open state, the operation direction of the fan 50 needs to be adjusted. Specifically, the direction of rotation of the motor is changed by connecting a changeover switch 7 to the micro motor of the fan 50 so that the direction of the wind when the fan 50 is switched from the closed state to the open state is changed to the opposite direction. Through the rotation direction that changes micro motor rotation direction and fan 50's flabellum, the front effect of blowing of fan 50 under the state of closing the lid is changeed to fan 50's back, reaches fan 50 and can switch the function of front and back face blowing according to the in service behavior, has satisfied alignment needs radiating position when the alignment jig 5 is rotatory around second lateral wall 12, for example face's direction, fan 50 also can be towards the problem of face's direction air-out.

EXAMPLE III

The present embodiment is the same as the embodiment, and the same parts are not described herein again, except that: as shown in fig. 9 to 12, a connecting member 8 is disposed between the adjusting bracket 5 and the end surface of the second side wall 12 of the arc-shaped bracket 1, one end of the connecting member 8 is rotatably connected to the arc-shaped bracket 1, the adjusting bracket 5 is rotatably connected to the other end of the connecting member 8, and the adjusting bracket 5 can rotate relative to the arc-shaped bracket 1 and the connecting member 8 through the connecting member 8.

Specifically, the connecting member 8 includes a first rotating shaft portion 81 and a second rotating shaft portion 82, one end of the first rotating shaft is perpendicularly connected to the second rotating shaft portion 82, the other end of the first rotating shaft portion 81 is connected to an end surface of the first side wall 11 or the second side wall 12, in this embodiment, the other end of the first rotating shaft portion 81 is connected to the second side wall 12, the adjusting frame 5 is connected to the second rotating shaft portion 82, the end surface of the second side wall 12 is provided with a mounting hole 14, an inner wall of the mounting hole 14 is provided with a protrusion (not shown), one end of the first rotating shaft portion 81 is provided with a groove, one end of the first rotating shaft portion 81 is arranged in the mounting hole 14, and the protrusion is located in the groove for limiting, the adjusting frame 5 is matched with the mounting hole 14 through the first rotating shaft portion 81, and can rotate relative to the arc-shaped; the second rotating shaft part 82 is provided with a shaft hole 821, the adjusting frame 5 is provided with a second connecting protrusion 822, and the adjusting frame 5 is matched with the shaft hole 821 through the second connecting protrusion 822, so that the second rotating shaft part 82 can rotate relative to the second rotating shaft part 82 as a shaft.

In some other embodiments, the second rotating shaft 82 may be provided with a second connecting protrusion 822, the adjusting bracket 5 may be provided with a shaft hole 821, and the adjusting bracket 5 may be engaged with the second connecting protrusion 822 through the shaft hole 821 and may rotate relative to the second rotating shaft 82 with the second rotating shaft 82 as a shaft.

Since the first and second

rotating shaft portions

81 and 82 are in a perpendicular relationship to each other, it can be understood that the adjustment bracket 5 can be rotated in two directions. Specifically, the adjusting bracket 5 rotates around the axis of the first rotating shaft part 81 with the first rotating shaft part 81 as a rotating point, and can rotate 360 degrees; the adjusting bracket 5 can also swing by taking the second rotating shaft part 82 as a rotating point and taking the axis of the first rotating shaft part 81 as a circle center, so that the function of multi-directional angle adjustment of the adjusting bracket 5 is realized.

To sum up, the embodiment of the utility model provides a neck area fan, including being used for wearing arc support 1 on human neck, be formed with air duct 2 in the arc support 1, air duct 2 sets up along the length direction of arc support 1, be equipped with air intake 3 and air outlet 4 on the arc support 1, air intake 3 and air outlet 4 all communicate with air duct 2, neck area fan still includes alignment jig 5, alignment jig 5 sets up along the circumference of air intake 3, is equipped with fan 50 in the alignment jig 5, fan 50 corresponds the setting of air intake 3 to alignment jig 5 movably connects on arc support 1. The utility model provides a neck area fan is through adjusting the angle of the alignment jig 5 that sets up on arc support 1, and then realize the position of nimble adjustment fan 50, can realize that alignment jig 5 lid closes and uses on arc support 1, can also realize that alignment jig 5 opens the use relative to arc support 1, when using under the lid closed condition, wind is introduced by air intake 3 and is discharged through air outlet 4, realizes blowing to the neck; when using under the open mode, wind can blow towards the direction that alignment of alignment jig 5, for example blow towards face's direction, can be according to user's demand adjustment jig 5's use angle, satisfied user's diversified demand.

As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a neck area fan, a serial communication port, including being used for wearing the arc support on human neck, be formed with the ventiduct in this arc support, this ventiduct sets up along the length direction of this arc support, be equipped with air intake and air outlet on this arc support, this air intake and air outlet all communicate with this ventiduct, this neck area fan still includes the alignment jig, this alignment jig sets up along the circumference of air intake, be equipped with the fan in this alignment jig, this fan is to setting up by the air intake, and this alignment jig movably connects on this arc support, and then adjust the angle of this alignment jig relative this arc support.

2. The neck band fan as claimed in claim 1, wherein the arc-shaped bracket has a first sidewall facing away from the neck portion and a second sidewall disposed opposite to the first sidewall, and the adjusting bracket is rotatably coupled to the first sidewall or the second sidewall.

3. The neck band fan as claimed in claim 2, wherein a hinge structure is provided between the adjusting bracket and the end surface of the first sidewall or the second sidewall of the arc bracket, and one side of the adjusting bracket is rotatably connected to the first sidewall or the second sidewall through the hinge structure.

4. The neck band fan as claimed in claim 3, wherein a first coupling protrusion is provided at one side of the adjusting bracket, a coupling hole is provided at an end surface of the first sidewall or the second sidewall, and the adjusting bracket and the arc bracket are rotatably hinged by the first coupling protrusion and the coupling hole.

5. The neck band fan as claimed in claim 2, wherein a connecting member is provided between the adjusting bracket and the end surface of the first side wall or the second side wall of the arc bracket, one end of the connecting member is rotatably connected to the arc bracket, the adjusting bracket is rotatably connected to the other end of the connecting member, and the adjusting bracket is rotatable relative to the arc bracket and the connecting member through the connecting member.

6. The neck strap fan as claimed in claim 5, wherein the connecting member comprises a first rotating shaft portion and a second rotating shaft portion, one end of the first rotating shaft portion is perpendicularly connected to the second rotating shaft portion, the other end of the first rotating shaft portion is connected to the end face of the first side wall or the second side wall, the adjusting bracket is connected to the second rotating shaft portion, the adjusting bracket can rotate relative to the arc bracket with the first rotating shaft portion as a shaft, and can rotate relative to the second rotating shaft portion with the second rotating shaft portion as a shaft.

7. The neck band fan as claimed in claim 6, wherein the end face of the first sidewall or the second sidewall is provided with a mounting hole, the inner wall of the mounting hole is provided with a protrusion, one end of the first rotating shaft portion is provided with a groove, one end of the first rotating shaft portion is disposed in the mounting hole, and the protrusion is located in the groove, the adjusting bracket is engaged with the mounting hole through the first rotating shaft portion, and can rotate relative to the arc-shaped bracket with the first rotating shaft portion as a shaft; the second rotating shaft part is provided with a shaft hole, the adjusting frame is provided with a second connecting bulge, the adjusting frame is matched with the shaft hole through the second connecting bulge, and the second rotating shaft part is used as a shaft and can rotate relative to the second rotating shaft part.

8. The neck belt fan as claimed in claim 1, wherein the number of the adjusting bracket is two, and the number of the air inlets corresponding to the fan in the adjusting bracket is two, the air inlets are respectively disposed at two ends of the arc bracket, and the adjusting bracket is disposed at an end surface of the arc bracket corresponding to the air inlets.

9. The neckband fan of claim 2, wherein the air outlet is disposed along a length of the bracket, the bracket further comprises a bottom wall and a top wall opposite to the bottom wall, the bottom wall and the top wall are connected between the first sidewall and the second sidewall, and the air outlet is disposed on the bottom wall, the top wall and/or the first sidewall.

10. The band fan of claim 9, wherein the air outlet comprises a plurality of air outlets spaced along the length of the bracket, or the air outlet comprises an air outlet extending along the length of the bracket.