Ventilation hood of safety helmet
By designing a ventilation hood on the helmet and using the air guide hood to create a negative pressure effect to accelerate airflow, the problem of poor heat dissipation of the helmet is solved. The animal ear shape enhances the appearance and makes the helmet more interesting, achieving both efficient heat dissipation and safety in high-temperature environments.
Patent Information
- Application Number
- CN202520610347.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-04-08
- Filing Date
- 2025-04-02
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-02
AI Technical Summary
Existing safety helmets do not dissipate heat effectively in high-temperature environments, and some consumers choose safety helmets with lower safety ratings in order to improve heat dissipation. In addition, the plastic animal ear design poses a safety hazard.
Design a safety helmet ventilator, comprising a ventilation shell, a deflector, and air inlet and outlet ports. The deflector design creates a negative pressure effect to accelerate airflow. Cold air is introduced through the air inlet ports and hot air is discharged through the outlet ports. The deflector is shaped like an animal ear to enhance its visual appeal.
It improves the heat dissipation efficiency of safety helmets, solving the heat dissipation problem of safety helmets in high-temperature environments. At the same time, it enhances the appearance through visual design, avoiding the risk of reduced safety.
Smart Images
Figure CN223860268U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a safety helmet ventilation appliance, especially to a safety helmet ventilation cover which can be installed on a safety helmet shell. BACKGROUND
[0002] Safety helmets include full-cover safety helmets, face-exposed safety helmets (3 / 4 type safety helmets) and half-cover safety helmets. The full-cover safety helmets, the face-exposed safety helmets (3 / 4 type safety helmets) and the half-cover safety helmets are arranged in descending order of safety, and arranged in descending order of heat level.
[0003] In hot weather, although the current safety helmets are provided with air inlet and outlet holes, the air inlet holes are not designed to be large enough to provide sufficient heat dissipation effect. The heat dissipation effect of the safety helmets can only be shown when the safety helmets are used at high speed. Therefore, many consumers prefer to use the half-cover safety helmets with low safety rather than the full-cover safety helmets or the face-exposed safety helmets with high safety.
[0004] In addition, many consumers often privately install cute animal ear-shaped decorations on the shells of the safety helmets. The cute animal ear-shaped decorations are made of cloth or plastic. The cute animal ear-shaped decorations made of plastic have sharp corners and are hard and protruding, which may cause safety problems in use.
[0005] Therefore, a better improvement scheme is proposed to solve the above problems. SUMMARY
[0006] The main purpose of the utility model is to provide a safety helmet ventilation cover to solve the problem of insufficient heat dissipation effect of the safety helmet, and to provide an animal ear-shaped decoration as a decoration.
[0007] To achieve the above purpose, the safety helmet ventilation cover provided by the utility model can be installed on the upper edge of a safety helmet shell, and has the following features.
[0008] At least one ventilation shell can be arranged on the upper edge of the safety helmet shell and can communicate with the ventilation opening of the safety helmet shell.
[0009] Two fairings are arranged on the left and right sides of the safety helmet, respectively, and protrude upward from the ventilation shell. The inner space of each fairing is in communication with the inner space of one of the ventilation shells. The height of the front side of each fairing is higher than the height of the rear side of the fairing. The front side of each fairing and the ventilation shell form a frame. The side of the frame closer to the other fairing is higher than the side of the frame farther from the other fairing. Thus, the fairing forms a sharp corner. Each fairing has the following features.
[0010] An air intake opening is located at the front end of the shroud and is formed by the frame, and the direction of the air intake opening is towards the outer oblique front side of the ventilation housing.
[0011] As described above, the safety helmet hood has a quadrilateral frame, which results in the hood having sharp corners.
[0012] As described above, each of the helmet vents is formed by longitudinally assembling at least three-sided blocks, and the vent has:
[0013] A first facet, located on the side of the air deflector near the other air deflector, and connected to the ventilation housing;
[0014] A second facet connected to the first facet;
[0015] A third facet is located on the side of the air deflector away from the other air deflector, and its two sides are respectively connected to the second facet and the ventilation housing;
[0016] A triangular facet is located at the front end of the air deflector, and two side edges of the triangular facet are respectively connected to the first facet and the ventilation housing;
[0017] The connection between the first facet and the triangular facet can form a first ridge line, and the connection between the first facet and the second facet can form a second ridge line;
[0018] The triangular facet is not connected to the first facet and one side edge of the ventilation housing, the front edge of the second facet, the front edge of the third facet, and the ventilation housing to form a quadrilateral frame. The side of the quadrilateral frame that is closer to the other shroud is higher than the side that is farther away from the other shroud, thus the shroud is formed with a sharp corner.
[0019] As described above, the safety helmet hood has an arc-shaped frame, thus forming a rounded corner.
[0020] As mentioned above, each of the safety helmet ventilation covers is an arc-shaped cover.
[0021] As described above, the safety helmet vent has the following features:
[0022] At least one air inlet is located on the front side of the ventilation housing;
[0023] At least one exhaust port is provided on the rear side of the ventilation housing and is connected to one of the at least one air inlets.
[0024] As described above, the safety helmet vent is a single shell that connects the two air deflectors.
[0025] The safety helmet ventilator described above has two ventilation shells, which correspond to the left and right sides of the safety helmet respectively, and the two ventilation shells are symmetrical to each other.
[0026] As described above, the helmet ventilator further has at least one extension hood that extends forward from the front end of the ventilator.
[0027] As described above, each of the extended hoods of the safety helmet has a guide groove formed on its outer side.
[0028] The advantages of this invention lie in its design of two air intake shields, which are higher in the front and lower in the back, with their openings facing outwards at an angle. Combined with airflow channels, these shields guide airflow into the two air intake shields, giving them a forced air intake effect. Furthermore, the negative pressure created by the large volume of rapid airflow entering through the air intake shields accelerates the airflow through the air inlet. This accelerated airflow then utilizes negative pressure to draw out hot air from inside the helmet. One negative pressure system pulls on the other, creating a chain reaction of double negative pressure, thus solving the problem of poor heat dissipation in helmets. In addition, even though the air intake opening is actually a non-dangerous obtuse angle, it visually resembles an animal ear, thereby enhancing its aesthetic appeal. Attached Figure Description
[0029] Figure 1 This is a perspective view of the first embodiment of the present utility model;
[0030] Figure 2 This is a front view schematic diagram of the first embodiment of the present invention installed on a safety helmet;
[0031] Figure 3 This is a rear view diagram of the first embodiment of the present invention installed on the safety helmet;
[0032] Figure 4 This is a schematic diagram of the gas flow path in the first embodiment of the present invention;
[0033] Figure 5 This is a perspective view of the second embodiment of the present invention;
[0034] Figure 6 This is a rear view schematic diagram of the second embodiment of the present invention;
[0035] Figure 7 This is a perspective view of the third embodiment of the present utility model;
[0036] Figure 8 This is a front view schematic diagram of the third embodiment of the present utility model. Detailed Implementation
[0037] The following, in conjunction with the accompanying drawings and preferred embodiments of the present invention, further illustrates the technical means adopted by the present invention to achieve its intended purpose.
[0038] Please refer to Figure 1 and Figure 2 This utility model proposes a safety helmet ventilation cover, which can be installed on the upper edge of a safety helmet shell A, and has at least one ventilation shell 10, at least one air inlet 20, at least one exhaust outlet 30, and two air guide covers 40.
[0039] Please refer to Figure 2 and Figure 3 The ventilation housing 10 can be disposed on the upper edge of the outer shell of the safety helmet A, and can be connected to the ventilation port of the safety helmet A, so that the internal space of the ventilation housing 10 and the internal space of the safety helmet A are interconnected. Each ventilation housing 10 has at least one extension cover 11, which extends forward from the front end of the ventilation housing 10. Each extension cover 11 is provided with a guide groove 111, which is disposed on the outer side of the extension cover 11.
[0040] An air inlet 20 is located on the front side of the ventilation housing 10, and an exhaust outlet 30 is located on the rear side of the ventilation housing 10. Each exhaust outlet 30 can communicate with one of the air inlets 20. Therefore, air can enter the ventilation housing 10 through the air inlet 20. The negative pressure formed by the airflow can draw out the internal hot air of the safety helmet A. Then, the drawn-out internal hot air will be discharged from the safety helmet A through the exhaust outlet 30.
[0041] Please refer to Figure 1 and Figure 4 Two air deflectors 40 correspond to the left and right sides of the safety helmet A, and protrude upwards from the ventilation housing 10. The internal space of each air deflector 40 is connected to the internal space of one of the ventilation housings 10. Each air deflector 40 has an inner side and an outer side. The inner side is the side of the air deflector 40 closer to the other air deflector 40, and the outer side is the side of the air deflector 40 farther from the other air deflector 40. The height of the air deflector 40 at the front of the ventilation housing 10 is greater than the height of the air deflector 40 at the rear of the ventilation housing 10. Furthermore, the height of the inner side of the front section of the air deflector 40 is greater than the outer side. In other words, the inner front end of the air deflector 40 is higher, and the outer rear end is lower. Therefore, the surface of the air deflector 40 is generally inclined from the inner front end to the outer rear end, and a convex angle is formed at the inner front end of the air deflector 40. Each air deflector 40 has an air inlet 41 located at the front end of the air deflector 40 and is formed by the air deflector 40 and the ventilation housing 10, and the opening direction of the air inlet 41 faces the outer oblique front side of the ventilation housing 10.
[0042] Please refer to Figure 1 and Figure 7In the first and third embodiments, the ventilation housing 10 is a single housing that connects the two air deflectors 40. Specifically, the ventilation housing 10 is formed in an inverted U-shape and has a connecting portion that connects to the rear side of the two air deflectors 40. Please refer to... Figure 5 In the second embodiment, the safety helmet vent has two ventilation shells 10A, which correspond to the left and right sides of the safety helmet A respectively, and are connected to one of the air guides 40, and the two ventilation shells 10 are symmetrical to each other.
[0043] Please refer to Figure 2 and Figure 5 In the first and second embodiments, the front side of each air deflector 40 forms a quadrilateral frame with the ventilation housing 10, and the side of the quadrilateral frame located inside the air deflector 40 is higher than the side of the quadrilateral frame located outside the air deflector 40, thereby forming a pointed front end on the inner side of the air deflector 40. Specifically, the air deflector 40 is formed by longitudinally connecting at least three faces, and each air deflector 40 has a first facet 42, a second facet 43, a third facet 44, and a triangular facet 45.
[0044] The first facet 42 is located inside the fairing 40 and is connected to the ventilation housing 10. The second facet 43 is connected to the first facet 42. The third facet 44 is located outside the fairing 40, and its opposite sides are connected to the second facet 43 and the ventilation housing 10, respectively. In other words, the fairing 40 consists of the first facet 42, the second facet 43, and the third facet 44 from the inside to the outside. The triangular facet 45 is located at the front end of the fairing 40, and its two sides are connected to the first facet 42 and the ventilation housing 10, respectively.
[0045] The triangular facet 45, which is not connected to the first facet 42, the front edge of the ventilation housing 10, the front edge of the second facet 43, and the front edge of the third facet 44, can form a quadrilateral frame with the ventilation housing 10. Within this quadrilateral frame, the height of the inner side of the shroud 40 is greater than the height of the outer side, thus allowing the shroud 40 to have a pointed top on its inner side. The connection between the first facet 42 and the triangular facet 45 can form a first ridge line 46, and the connection between the first facet 42 and the second facet 43 can form a second ridge line 47.
[0046] Please refer to Figure 7 and Figure 8In the third embodiment, each flow deflector 40A is an arc-shaped cover 48, and the front side of each flow deflector 40A forms an arc-shaped frame with the ventilation housing 10. The side of the arc-shaped frame located inside the flow deflector 40A is higher than the side of the arc-shaped frame located outside the flow deflector 40A, thereby forming a rounded corner at the inner front end of the flow deflector 40A. In the first and second embodiments, each flow deflector 40A is composed of multiple facets. In the third embodiment, each flow deflector 40A is an arc-shaped cover 48. In other embodiments, each flow deflector 40A can be a cover composed of at least one planar body and at least one arc-shaped body joined together.
[0047] Please refer to Figure 4 When the user wears a helmet A equipped with a helmet ventilation hood, air enters through the air intake openings 41 of each hood 40 via the guide grooves 111 on the extension hood 11. The air then converges with the air intake 20 in the internal space of the ventilation shell 10. As the user moves forward, a vacuum and negative pressure are created behind the helmet A, causing the air to flow backward. This draws the hot air inside the helmet A to flow backward, which, combined with the air intake openings 41 of each hood 40, accelerates the flow of hot air inside the helmet A. Finally, the hot air is expelled in large quantities through the exhaust port 30.
[0048] In this invention, each air deflector 40 is formed with a pointed or rounded corner, resembling the shape of an animal ear. Furthermore, taking the first and second embodiments as examples, the air intake opening 41 is surrounded by the side edges of a triangular facet 45, a second facet 43, and a third facet 44. Because the first facet 42, the second facet 43, and the third facet 44 all extend backward in a gently sloping manner, and especially with the triangular facet 45 extending forward for buffering, and because the included angles between each facet are all obtuse angles, the air intake opening 41 is actually a non-dangerous obtuse angle.
[0049] However, when viewed from the oblique front side (i.e., facing the air intake opening 41) of this utility model (e.g.) Figure 1 As shown, the triangular facet 45 will visually disappear or become very narrow because it is parallel to the line of sight. The first facet 42 and the second facet 43 are blocked by the air intake opening 41. Visually, only the sharp angle formed by the side edge of the triangular facet 45, the side edge of the second facet 43 and the side edge of the third facet 44 can be seen. In this way, the actual obtuse angle is visually transformed into a non-dangerous sharp angle by using an optical illusion.
[0050] When viewing this utility model from the front (e.g.) Figure 2As shown), due to the viewing angle, the entire triangular facet 45 cannot be seen, making it appear narrow and sharp. Furthermore, because the air intake opening 41 faces diagonally forward, the first facet 42, the second facet 43, and the third facet 44 are almost invisible when viewed from the front, resulting in a sharp angle formed by the side edge of the second facet 43 and the side edge of the triangular facet 45. When viewing the invention from the rear (as shown...), Figure 3 As shown, the triangular facet 45 is obscured by the first facet 42 and cannot be seen; only the sharp angle formed by the first ridge 46 and the side edge of the second facet 43 is visible. Thus, an optical illusion is used to make the actual obtuse angle appear as a harmless sharp angle. Therefore, even if the air intake opening 41 is actually a harmless obtuse angle, it will visually resemble the pointed ears of an animal, thereby enhancing its visual appeal.
[0051] The advantages of this invention lie in its design of two air intake shields 40, which are higher in the front and lower in the back, with their openings facing outwards and slightly forwards. Combined with the airflow guide grooves 111, these shields guide airflow into the two air intake shields 40, giving them a forced air intake effect. Furthermore, the negative pressure created by the large volume of rapid airflow entering through the air intake shields 40 accelerates the airflow through the air intake holes 20. This accelerated airflow then utilizes negative pressure to draw out the hot air from inside the helmet A. This single negative pressure pulls on the other, creating a chain reaction of double negative pressure, thus solving the problem of poor heat dissipation in the helmet A. In addition, even though the air intake opening 41 is actually a non-dangerous obtuse angle, it visually resembles an animal ear shape, thereby enhancing its aesthetic appeal.
[0052] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model's technical solution. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the present utility model's technical solution shall still fall within the scope of the present utility model's technical solution.
Claims
1. A safety helmet ventilation hood, which can be installed on the upper edge of a safety helmet shell, characterized in that, have: At least one ventilation housing may be disposed on the upper edge of the helmet shell and may be connected to the ventilation opening of the helmet shell; Two air deflectors, each corresponding to the left and right sides of the helmet, and protruding upwards from the ventilation housing, with the internal space of each air deflector communicating with the internal space of one of the ventilation housings; the height of each air deflector at the front side of the ventilation housing is greater than the height at the rear side of the ventilation housing; the front side of each air deflector forms a frame with the ventilation housing, and the side of the frame closer to the other air deflector is higher than the side farther from the other air deflector, thereby forming a convex angle shape; each air deflector has: An air intake opening is located at the front end of the shroud and is formed by the frame, and the direction of the air intake opening is towards the outer oblique front side of the ventilation housing.
2. The safety helmet ventilation cover according to claim 1, characterized in that, The frame is a quadrilateral frame, thus the fairing forms a pointed shape.
3. The safety helmet ventilation cover according to claim 2, characterized in that, Each of these fairings is formed by longitudinally assembling at least three-sided structures, and the fairing has: A first facet, located on the side of the air deflector near the other air deflector, and connected to the ventilation housing; A second facet connected to the first facet; A third facet is located on the side of the air deflector away from the other air deflector, and its two sides are respectively connected to the second facet and the ventilation housing; A triangular facet is located at the front end of the air deflector, and two side edges of the triangular facet are respectively connected to the first facet and the ventilation housing; The connection between the first facet and the triangular facet can form a first ridge line, and the connection between the first facet and the second facet can form a second ridge line; The triangular facet is not connected to the first facet and one side edge of the ventilation housing, the front edge of the second facet, the front edge of the third facet, and the ventilation housing to form a quadrilateral frame. The side of the quadrilateral frame that is closer to the other shroud is higher than the side that is farther away from the other shroud, thus the shroud is formed with a sharp corner.
4. The safety helmet ventilation cover according to claim 1, characterized in that, The frame is an arc-shaped frame, thus the fairing has rounded corners.
5. The safety helmet ventilation cover according to claim 4, characterized in that, Each of these fairings is an arc-shaped cover.
6. The safety helmet ventilator according to any one of claims 1 to 5, characterized in that, have: At least one air inlet is located on the front side of the ventilation housing; At least one exhaust port is located on the rear side of the ventilation housing and is connected to one of the air inlets.
7. The safety helmet ventilator according to any one of claims 1 to 5, characterized in that, The ventilation housing is a single housing that connects the two air deflectors.
8. The safety helmet ventilator according to any one of claims 1 to 5, characterized in that, It also has two ventilation shells, which correspond to the left and right sides of the helmet respectively, and the two ventilation shells are symmetrical to each other.
9. The safety helmet ventilator according to any one of claims 1 to 5, characterized in that, The ventilation housing also has at least one extension hood that extends forward from the front end of the ventilation housing.
10. The safety helmet ventilator according to claim 9, characterized in that, Each of the extension covers has a flow channel formed on its outer side.