Mounting structure and mounting method of safety helmet fan and safety helmet

Abstract

The invention belongs to the technical field of safety helmets, and particularly provides a safety helmet fan mounting structure, a safety helmet fan mounting method and a safety helmet. The installation structure of the safety helmet fan comprises a helmet shell and an installation support, the fan is arranged on the installation support, the installation support is located in an installation cavity in the inner side of the helmet shell, and when the fan operates, air enters from an air inlet in the lower portion and obliquely and upwards blows air along the inner wall of the helmet shell. The air path arrangement form of bottom air inlet and oblique air outlet is adopted, air flow generated during air inlet can take away heat of the face of a wearer, and air flow generated during air outlet can blow away hot air between the position above the head of the wearer and the inner wall of the helmet shell along the inner wall of the helmet shell; the problem that a fan directly blows air to the head of a wearer, so that the wearer feels uncomfortable is solved, and the wearer feels more comfortable.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of safety helmets, and more particularly relates to a mounting structure and mounting method of a safety helmet fan and a safety helmet. BACKGROUND

[0002] A safety helmet refers to a cap that protects the head from falling objects and other specific factors. The safety helmet is composed of a helmet shell, a helmet liner, a chin strap, and accessories. The helmet shell is a thin shell structure in the shape of a hemisphere, and the surface is relatively smooth, which makes it easy for the impact object to slide away, thereby reducing the impact time.

[0003] The safety helmet can provide protection, but it can also affect the heat dissipation of the wearer's head, making the wearer feel hot. In the prior art, there is a safety helmet with a fan. When the fan is running, the airflow generated by the fan carries away the heat, making the wearer feel cooler. In the prior art, the airflow generated by the fan of the safety helmet directly blows on the wearer's head when in use, which can easily cause discomfort after long-term use. SUMMARY

[0004] To solve the technical problem that the fan of the safety helmet directly blows on the wearer's head in the prior art, causing discomfort, the application provides a mounting structure and mounting method of a safety helmet fan and a safety helmet.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the application is as follows: In a first aspect, the application provides a mounting structure of a safety helmet fan, which comprises a helmet shell. An inner wall of the helmet shell is formed with a mounting cavity that is recessed inward at a position corresponding to the forehead of a wearer. The mounting cavity is in communication with an inner cavity of the helmet shell. A bottom of the mounting cavity forms an air inlet through the helmet shell. An installation bracket is arranged in the mounting cavity. A fan is arranged on the installation bracket. An air outlet direction of the fan is inclined upward along the inner wall of the helmet shell.

[0006] In a possible implementation, the installation bracket comprises: A support portion is arranged in the helmet shell and is used to separate the inner cavity of the helmet shell and the mounting cavity. The support portion has an air outlet that penetrates through the thickness of the support portion. The air outlet direction of the fan is directed towards the air outlet; and A limiting portion is arranged on one side of the support portion adjacent to the mounting cavity. The limiting portion has a limiting groove. The fan is arranged in the limiting groove.

[0007] In a possible implementation, an inner wall of a top portion of the mounting cavity is provided with a first limiting block. The limiting portion comprises: A second limiting block is arranged on one side of the supporting part adjacent to the mounting cavity and has an inclined bearing surface, the lower part of the fan abutting against the bearing surface and the upper part abutting against the first limiting block. Two third limiting blocks are oppositely arranged on one side of the supporting part adjacent to the mounting cavity, and the two sides of the fan respectively abut against the two third limiting blocks.

[0008] In a possible implementation, the mounting bracket further comprises a compacting part arranged on one side of the supporting part adjacent to the mounting cavity, and the compacting part abuts against the air outlet side of the fan.

[0009] In a possible implementation, the supporting part is provided with an operation hole, and the control switch of the fan is arranged in the operation hole.

[0010] In a possible implementation, the included angle between the air outlet direction of the fan and the vertical direction ranges from 30° to 45°.

[0011] In a possible implementation, the fan is rotatably arranged in the mounting cavity around a horizontal axis.

[0012] Compared with the prior art, the mounting structure of the safety helmet fan provided in the application has the following beneficial effects: The mounting structure of the safety helmet fan provided in the application comprises a helmet shell and a mounting bracket, the fan is arranged on the mounting bracket, the mounting bracket is located in a mounting cavity on the inner side of the helmet shell, and the fan runs to take in air from the air inlet at the lower part and blow air obliquely upward along the inner wall of the helmet shell. The application adopts the air path arrangement form of bottom air inlet and oblique air outlet, the airflow during air inlet can take away the heat on the face of the wearer, and the airflow generated during air outlet can blow away the hot air between the head of the wearer and the inner wall of the helmet shell along the inner wall of the helmet shell, thereby solving the problem that the fan directly blowing to the head of the wearer can easily cause physical discomfort, and making the wearer more comfortable.

[0013] In a second aspect, the application provides a safety helmet, comprising: The mounting structure of the safety helmet fan according to any one of the implementation manners, wherein the mounting cavity is provided with a fan, and the air outlet direction of the fan is obliquely upward along the inner wall of the helmet shell. An inner liner is arranged in the inner cavity of the helmet shell, the inner liner forms a protective space for accommodating the head of the wearer, and a heat dissipation channel is formed between the inner liner and the inner cavity surface of the helmet shell. A power module is arranged in the helmet shell and used for supplying power to the fan.

[0014] In a possible implementation, the power module is a solar panel, the solar panel is arranged on the outer surface of the hat shell, the hat shell is provided with a wire hole which is in communication with the inner cavity of the hat shell, and the wire of the solar panel is connected with the fan through the wire hole.

[0015] The safety hat provided in the application adopts the mounting structure of the safety hat fan in any of the above implementation manners, has the same technical effects, and will not be described here again.

[0016] In a third aspect, the application provides a safety hat fan mounting method, comprising the following steps: Manufacturing the hat shell and the mounting bracket in any of the above implementation manners; Fixing the fan and the control switch on the mounting bracket respectively, fixing the mounting bracket in the hat shell, and making the included angle between the air outlet direction of the fan and the vertical direction within the range of 30°-45°.

[0017] The safety hat fan mounting method provided in the application mounts the safety hat fan to the inner side of the hat shell, and opens the bottom of the air inlet with the mounting cavity, so that the outer surface of the hat shell does not need to be opened, which helps to ensure the smoothness of the outer surface of the hat shell and improve the protection performance of the safety hat when it is impacted. The air path design of bottom air inlet and oblique air outlet helps to reduce the discomfort of the wearer caused by the long-term direct blowing of the fan on the forehead. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 The wearing schematic diagram of the safety hat provided in the embodiment of the application; Figure 2 The external view of the safety hat provided in the embodiment of the application; Figure 3 The assembly schematic diagram of the hat shell and the mounting bracket in the embodiment of the application; Figure 4 The internal cross-sectional view of the hat shell, the mounting bracket and the fan in the embodiment of the application Figure 1 ; Figure 5 The local enlarged view of part A in the embodiment of the application; Figure 4 Figure 6 The internal cross-sectional view of the hat shell, the mounting bracket and the fan in the embodiment of the application Figure 2 ; ​Figure 7 For Figure 6 A local enlarged view of the middle B part; Explanation of reference signs: 10, cap shell; 11, mounting cavity; 111, first limiting block; 12, mounting support; 121, supporting part; 1211, air inlet; 1212, air outlet; 122, limiting part; 1221, second limiting block; 1222, third limiting block; 123, compaction part; 20, fan; 21, control switch; 30, solar panel. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0021] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0022] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] In addition, the terms "first", "second", "third", etc. are only used for description purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" or "several" is two or more, unless otherwise specifically defined.

[0024] 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 the present application belongs.

[0025] Please refer to Figures 1 to 7 , the following describes a mounting structure, mounting method and safety cap of a safety cap fan provided by an embodiment of the present application.

[0026] Please refer toFigures 1 to 7 In the first aspect, the embodiment of the present application provides a mounting structure of a safety helmet fan, which comprises a helmet shell 10, a mounting bracket 12 and a fan 20. An inwardly recessed mounting cavity 11 is formed on the inner wall of the helmet shell 10 at a position corresponding to the forehead of a wearer. The mounting cavity 11 is in communication with the inner cavity of the helmet shell 10. The bottom of the mounting cavity 11 penetrates the helmet shell 10 to form an air inlet 1211. The mounting bracket 12 is arranged in the mounting cavity 11. The fan 20 is arranged on the mounting bracket 12. The air outlet direction of the fan 20 is inclined upward along the inner wall of the helmet shell 10.

[0027] Compared with the prior art, the mounting structure of the safety helmet fan provided by the embodiment of the present application has the following beneficial effects: The mounting structure of the safety helmet fan provided by the embodiment of the present application comprises a helmet shell 10 and a mounting bracket 12. The fan 20 is arranged on the mounting bracket 12. The mounting bracket 12 is arranged in the mounting cavity 11 on the inner side of the helmet shell 10. When the fan 20 operates, air is taken in from the air inlet 1211 at the lower part and blown obliquely upward along the inner wall of the helmet shell 10. Figure 1 As shown by the arrow in the figure, the embodiment of the present application adopts a bottom air inlet and oblique air outlet air path arrangement form. When air is taken in, the airflow flows through the face of the wearer, which can take away the heat of the face, so that the face is relatively cool and comfortable. When air is blown out, the airflow generated can blow away the hot air between the head of the wearer and the inner wall of the helmet shell 10 along the inner wall of the helmet shell 10, which solves the problem that the fan 20 directly blowing to the head of the wearer can easily cause discomfort, so that the wearer is more comfortable.

[0028] The outer shape of the helmet shell 10 is hemispherical or approximately hemispherical. The surface can be provided with a convex rib for increasing the structural strength. The joint position between the convex rib and the helmet shell 10 should be smoothly transitioned, so that the outer surface of the helmet shell 10 is as smooth and round as possible. The material of the helmet shell 10 can be PP, PVC, ABS plastic and other existing materials used for manufacturing safety helmets. The helmet shell 10 is produced and processed by injection molding process.

[0029] The outer shape of the helmet shell 10 is formed with a protrusion at the front end. The mounting cavity 11 for accommodating the fan 20 is formed in the interior of the protrusion. The protrusion and the surface of the helmet shell 10 are connected by a round corner for smooth transition, so as to avoid forming a sharp part where stress is concentrated. The mounting cavity 11 is in communication with the inner cavity of the helmet shell 10 through the air outlet 1212. The airflow generated when the fan 20 operates enters the inner cavity through the air outlet 1212 to blow and dissipate heat.

[0030] In order to make the outer surface of the helmet shell 10 as smooth and round as possible, the embodiment of the present application opens an air inlet 1211 in communication with the mounting cavity 11 on the side of the bottom of the helmet shell 10 adjacent to the face of the wearer. The air inlet 1211 can be provided with a plurality of air inlets along the width direction of the helmet shell 10. Figure 1As shown, the air inlet flow can pass through the face of the wearer. Compared with the prior art of directly opening holes for air inlet at the position corresponding to the forehead of the wearer on the hat shell 10, the opening is more concealed, the air inlet 1211 is in a non-impact area, and there is no opening in the impact area outside the hat shell 10.

[0031] The benefits of the above arrangement are: on the one hand, the outer side of the hat shell 10 has no opening, so that it can form a complete and smooth protective surface, which not only improves the appearance, but also makes it easier for falling objects to slide away when the safety helmet is impacted, thereby reducing the contact time between the safety helmet and the falling object when impacted, and improving the safety protection performance. On the other hand, the problem of stress concentration around the hole on the outer side of the hat shell 10 and poor impact resistance is avoided, so that the overall structural strength of the hat shell 10 is improved, and the protective performance is also improved. On the other hand, when used outdoors, the downward air inlet 1211 prevents most dust and rain from entering the installation cavity 11, which helps the fan 20 to operate stably, and the fan 20 of the safety helmet can also work normally in harsh environments.

[0032] The hole size of the air inlet 1211 and the air outlet 1212 should not be too large to prevent fingers from colliding with the fan. In order to ensure the air inlet and air outlet, the air inlet 1211 and the air outlet 1212 can be provided with multiple openings respectively.

[0033] The mounting bracket 12 is connected to the hat shell 10 and is used to fix the fan 20. The hat shell 10 and the mounting bracket 12 can be connected together by adhesion, insertion, interference fit, screw connection, one-piece connection, magnetic attraction, etc., as long as the relative position of the hat shell 10 and the mounting bracket 12 is fixed during use. The specific material, shape and structure of the mounting bracket 12 are not limited, as long as the fan 20 can be fixed in the installation cavity 11 in an inclined upward manner.

[0034] The fan 20 can be fixed on the mounting bracket 12 by clamping, screwing, adhesion, etc. One or more fans 20 can be provided as needed. The fan 20 is powered by a battery or a solar panel 30, and the battery or the solar panel 30 is arranged on the hat shell 10.

[0035] Please refer to Figure 1 、 Figures 3 to 7 In some possible embodiments, the mounting bracket 12 includes a support portion 121 and a limiting portion 122, and the support portion 121 and the limiting portion 122 are integrally connected. The material of the mounting bracket 12 can be metal or non-metal, and can be processed by injection molding, machining, 3D printing, etc.

[0036] The support part 121 is arranged on the cap shell 10 and is used to separate the inner cavity of the cap shell 10 and the mounting cavity 11. The support part 121 has an air outlet 1212 penetrating through the thickness of the support part 121. The air outlet direction of the fan 20 is towards the air outlet 1212. The air outlet 1212 can be provided with one or more air outlets according to requirements. The limiting part 122 is arranged on one side of the support part 121 adjacent to the mounting cavity 11. The limiting part 122 is used to support the fan 20. The limiting part 122 has a limiting groove. The fan 20 is arranged in the limiting groove by means of clamping, screwing, bonding or the like.

[0037] The specifications, models and quantity of the fan 20 are not specifically limited. The user can select and set the fan 20 according to requirements.

[0038] As shown in Figure 3 In one specific embodiment, the support part 121 is a plate-shaped member with an L shape. One end of the support part 121 is in abutment with the inner wall of the cap shell 10. The other end of the support part 121 is in abutment with the lower edge of the cap shell 10. In order to realize the connection and fixation of the support part 121 and the cap shell 10, the support part 121 and the cap shell 10 can be connected together by means of screwing, bonding, clamping or the like.

[0039] In one specific embodiment, the inner wall of the cap shell 10 has a clamping groove. One end of the support part 121 is clamped and matched with the clamping groove. The lower edge of the cap shell 10 has a mounting protrusion. The other end of the support part 121 has a mounting hole. The mounting hole is in interference fit with the mounting protrusion. The clamping groove and the mounting protrusion jointly realize the connection and fixation of the support part 121 and the cap shell 10. The interference fit makes the support part 121 not easy to fall off during use.

[0040] Please refer to Figures 4 to 7 In some possible embodiments, the inner wall of the top of the mounting cavity 11 is integrally formed with a first limiting block 111. The limiting part 122 includes a second limiting block 1221 and a third limiting block 1222. The second limiting block 1221 is arranged on one side of the support part 121 adjacent to the mounting cavity 11 and has an inclined bearing surface. The lower part of the fan 20 is in abutment with the bearing surface. The upper part of the fan 20 is in abutment with the first limiting block 111. The first limiting block 111 and the second limiting block 1221 are used to limit the fan 20 in the up-down direction. The fan 20 is arranged at an inclined angle through the inclined bearing surface. The number of the first limiting block 111 and the second limiting block 1221 can be one, two or more.

[0041] The two third limiting blocks 1222 are oppositely arranged on one side of the support part 121 adjacent to the mounting cavity 11. The two sides of the fan 20 are in abutment with the two third limiting blocks 1222 respectively. The two third limiting blocks 1222 are used to limit the fan 20 in the horizontal direction.

[0042] Please refer to Figure 1 and Figure 5In some possible embodiments, in order to prevent the fan 20 from shaking during operation, the mounting bracket 12 further comprises a compacting portion 123 arranged on one side of the supporting portion 121 adjacent to the mounting cavity 11, the compacting portion 123 abuts against the air outlet side of the fan 20, and is used to tightly press the fan 20 against the bearing surface, so as to prevent the fan 20 from shaking or vibrating during operation.

[0043] Referring to Figure 1 and Figure 3 In some possible embodiments, the supporting portion 121 is provided with an operation hole, and the control switch 21 of the fan 20 is arranged in the operation hole, so that the wearer can control the fan 20 to be turned on or turned off by actuating the control switch 21. The control switch 21 can be directly selected from existing switch products on the market, and can be arranged on the supporting portion 121 by means of adhesion, clamping or the like.

[0044] Referring to Figure 1 , the included angle between the air outlet direction of the fan 20 and the vertical direction is defined as an angle a, and the angle a ranges from 30° to 45°, and can be 30°, 33°, 35°, 37°, 40°, 42°, 44° or the like. The inclination angle of the fan 20 can be fixed or adjustable. For example, the fan 20 is rotatably arranged in the mounting cavity 11 about a horizontal axis, and after the rotation angle of the fan 20 is adjusted, the fan 20 can be fixed by means of screws, buckles, limit pins, straps or the like, so that the inclination angle of the fan 20 can be finely adjusted as needed.

[0045] In a second aspect, the embodiments of the present application provide a safety helmet, which comprises the mounting structure, the inner liner, the fan 20 and the power module of the safety helmet fan in any of the above embodiments. The mounting cavity 11 is provided with the fan 20, and the air outlet direction of the fan 20 is inclined upward along the inner wall of the helmet shell 10. The inner liner is arranged in the inner cavity of the helmet shell 10, and forms a protective space for accommodating the head of the wearer. The inner liner and the inner cavity surface of the helmet shell 10 form a heat dissipation channel. The power module is arranged in the helmet shell 10, and is used to supply power to the fan 20.

[0046] The inner liner is used to fix the safety helmet on the head of the wearer, and is attached to the head of the wearer. The inner liner and the helmet shell 10 can be connected and fixed by means of a buckle structure. The inner liner can be directly selected from existing products on the market, and the specific specifications and models thereof are not limited.

[0047] After the inner lining is installed, it is spaced apart from the inner cavity surface of the hat shell 10 by a proper distance (for example, 5mm, 8mm), so as to form a heat dissipation channel. The airflow blown by the fan 20 enters the heat dissipation channel and diffuses in all directions in the heat dissipation channel, blowing away the heat accumulated on the head of the wearer. The power module can be a battery, a solar panel 30, etc. The solar panel 30 is arranged on the outer surface of the hat shell 10, and the hat shell 10 is provided with a threading hole communicating with the inner cavity of the hat shell 10. The wire of the solar panel passes through the threading hole and is connected with the fan 20. When working outdoors, sunlight can be incident on the solar panel to generate electric energy to drive the fan 20 to operate.

[0048] In a third aspect, the embodiments of the present application provide a mounting method of the safety helmet fan, comprising the following steps: manufacturing the hat shell 10 and the mounting bracket 12 in any of the above embodiments; fixing the fan 20 and the control switch 21 on the mounting bracket 12 respectively, fixing the mounting bracket 12 inside the hat shell 10, and making the included angle between the air outlet direction of the fan 20 and the vertical direction within the range of 30°-45°.

[0049] In the embodiments of the present application, the hat shell 10 and the mounting bracket 12 are of a split structure, and the internal space of the hat shell 10 is divided into the mounting cavity 11 and the inner cavity by the mounting bracket 12. Compared with the way of directly producing the hat shell 10 with the mounting cavity 11 and the air outlet 1212, the split structure is easier to produce and is more convenient for the installation of the fan 20.

[0050] The hat shell 10 and the mounting bracket 12 are produced separately, and the structures of the two are relatively simple, the difficulty of mold manufacturing is low, and the probability of producing defective products is also low. After the hat shell 10 and the mounting bracket 12 are produced, the fan 20 and the control switch 21 are fixed on the mounting bracket 12, and then the mounting bracket 12 is fixed on the hat shell 10. Finally, the inner lining is installed, and the inner wall of the hat shell 10 can be provided with buckles for clamping connection with the inner lining.

[0051] It can be understood that the parts in the above embodiments can be freely combined or deleted to form different combined embodiments, and the specific content of each combined embodiment will not be described here. After the above description, it can be considered that the present application has described each combined embodiment and can support different combined embodiments.

[0052] The above only describes the preferred embodiments of the present application and does not limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A mounting structure of a safety hat fan characterized by comprising: The hat shell (10) has an inner wall with an inwardly recessed mounting cavity (11) formed at a position corresponding to the forehead of a wearer, the mounting cavity (11) being in communication with the inner cavity of the hat shell (10), the bottom of the mounting cavity (11) having a through hole (1211) formed as an air inlet in the hat shell (10), and the mounting cavity (11) being provided with a mounting bracket (12) in which a fan (20) is arranged, the air outlet direction of the fan (20) being inclined upward along the inner wall of the hat shell (10).

2. The mounting structure for a safety cap fan according to claim 1, wherein The mounting bracket (12) comprises: a support portion (121) arranged in the hat shell (10) to separate the inner cavity of the hat shell (10) and the mounting cavity (11), the support portion (121) having a through hole (1212) in the thickness thereof, and the air outlet direction of the fan (20) being directed toward the through hole (1212); and a limiting portion (122) arranged on one side of the support portion (121) adjacent to the mounting cavity (11), the limiting portion (122) having a limiting groove in which the fan (20) is arranged.

3. The mounting structure for a safety cap fan according to claim 2, wherein The inner wall of the top of the mounting cavity (11) is provided with a first limiting block (111), and the limiting portion (122) comprises: a second limiting block (1221) arranged on one side of the support portion (121) adjacent to the mounting cavity (11) and having an inclined bearing surface, the lower part of the fan (20) abutting against the bearing surface and the upper part of the fan (20) abutting against the first limiting block (111); and two third limiting blocks (1222) oppositely arranged on one side of the support portion (121) adjacent to the mounting cavity (11), the two sides of the fan (20) respectively abutting against the two third limiting blocks (1222).

4. The mounting structure for a safety cap fan according to claim 3, wherein The mounting bracket (12) further comprises a compacting portion (123) arranged on one side of the support portion (121) adjacent to the mounting cavity (11), the compacting portion (123) abutting against the air outlet side of the fan (20).

5. The mounting structure for a safety cap fan according to claim 2, wherein The support portion (121) is provided with an operation hole, and the control switch (21) of the fan (20) is arranged in the operation hole.

6. The mounting structure for a safety cap fan according to claim 1, wherein The included angle between the air outlet direction of the fan (20) and the vertical direction ranges from 30° to 45°.

7. The mounting structure for a safety cap fan according to claim 1 or 6, wherein The fan (20) is rotatably arranged in the mounting cavity (11) about a horizontal axis.

8. A safety hat characterized by The safety hat fan mounting structure comprises: the safety hat fan mounting structure according to any one of claims 1-7, the mounting cavity (11) being provided with a fan (20), the air outlet direction of the fan (20) being inclined upward along the inner wall of the hat shell (10); an inner liner arranged in the inner cavity of the hat shell (10), the inner liner forming a protective space for accommodating the head of a wearer, and a heat dissipation channel being formed between the inner liner and the inner cavity surface of the hat shell (10); and a power supply module arranged in the hat shell (10) for supplying power to the fan (20).

9. The safety cap of claim 8, wherein, The power module is a solar panel (30), which is arranged on the outer surface of the cap shell (10), the cap shell (10) is provided with a threading hole communicating with the inner cavity, and the wire of the solar panel (30) is connected with the fan (20) through the threading hole.

10. A method of installing a safety hat fan (20) characterized by, The method comprises the following steps: Manufacturing the cap shell (10) and the mounting bracket (12) according to any one of claims 1-7; Fixing the fan (20) and the control switch (21) on the mounting bracket (12) respectively, fixing the mounting bracket (12) in the cap shell (10), and making the included angle between the air outlet direction of the fan (20) and the vertical direction within the range of 30°-45°.

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