helmet

Abstract

The present invention provides a helmet that is worn to protect the head from impacts, etc., and is equipped with a cooling fan to combat heat while wearing it, while also preventing the wearer's hair from getting caught in the cooling fan, and efficiently ventilating the inside of the helmet by expelling air. [Solution] The helmet 10 of the present invention comprises at least a helmet body 1 that protects the head from impact, an impact-absorbing molded material 2 that constitutes an interior lining disposed inside the helmet body, and a ventilation means 3 attached to the impact-absorbing molded material. The impact-absorbing molded material has an air passage 22 on one side facing the helmet body. The ventilation means includes an axial flow fan 31 that draws in air from the wearer's head side and discharges the air to the outside of the helmet body through the air passage, and a circular mesh-shaped cover member 32 whose opening area is wider than the non-opening area. This ventilation means is equipped with a hair entanglement prevention structure that prevents the wearer's hair from being caught in the axial flow fan as air is drawn in.

Description

Technical Field

[0001] The present invention relates to a helmet. More specifically, the helmet for protecting the head from impacts and the like is provided with a blower fan for heat countermeasures during wearing, and there is no risk that the wearer's hair will be卷入 into the blower fan, and it has a blowing function that discharges the air inside the helmet and efficiently ventilates the inside of the helmet.

Background Art

[0002] Conventionally, in factories, construction sites, etc., helmets are worn during work for safety reasons to avoid various risks caused by falling objects, flying objects, or falling / tripping. However, heat easily accumulates inside the helmet, and various measures have been taken especially for heat countermeasures in summer.

[0003] Conventionally, as a helmet with heat countermeasures, for example, an air suction port is opened at the upper center (top of the head) of the helmet body or the interior provided inside it, and a blower fan is assembled to introduce air from the outside of the helmet into the inside of the helmet (see, for example, Patent Documents 1 and 2).

[0004] However, in the means of blowing external air into the helmet, although a comfortable cooling sensation can be obtained near the blower fan where the blown air hits, the momentum of the air weakens away from the blower fan and a sufficient cooling sensation cannot be obtained.

[0005] Therefore, instead of taking in external air into the helmet, it is conceivable to change the direction of the blower fan and suck the inside of the helmet to exhaust the stuffy and hot air to eliminate the heat caused by stuffiness. In such a ventilation means of discharging the air inside the helmet, it is expected that a comfortable cooling sensation can be obtained without being greatly affected by the distance from the blower fan.

[0006] It should be noted that the original text contains some Chinese characters which seem to be input errors. I have translated the text based on the overall context. If there are specific requirements or corrections regarding these Chinese characters, please let me know. Also, the term "卷入" is directly translated as "卷入" as it's not clear what the intended English word should be. You may need to adjust it according to the correct expression.However, the space inside the helmet is very narrow, and simply installing a cooling fan could lead to the wearer's hair getting caught in the fan during suction inside the helmet. Furthermore, if the opening area on the intake side of the cooling fan is reduced to prevent hair from getting caught, the loss of suction pressure will be significant, reducing the exhaust volume and making it impossible to adequately relieve stuffiness. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2008-101278 [Patent Document 2] Special Publication No. 2014-523980 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] This invention was developed in view of the above-mentioned conventional circumstances, and aims to provide a helmet that prevents the wearer's hair from getting caught in the cooling fan and efficiently ventilates the inside of the helmet by expelling air from within the helmet. [Means for solving the problem]

[0009] The helmet according to the present invention is equipped with a ventilation function and comprises at least a helmet body that protects the head from impact, an impact-absorbing molded material formed in a shape that can be worn on the wearer's head and constituting an interior body disposed inside the helmet body, and a ventilation means attached to an air intake port provided in the impact-absorbing molded material, wherein the impact-absorbing molded material has an air passage on one side of the helmet body that connects the air intake port to which the ventilation means is attached to the outside of the helmet body, the ventilation means has an axial fan that draws in air from the wearer's head side and discharges the air to the outside of the helmet body through the air passage, and also has a circular mesh-shaped cover member interposed between the wearer's head and the axial fan to prevent the wearer's hair from coming into contact with the axial fan, and further comprises a hair entanglement prevention structure that prevents the wearer's hair from being caught in the axial fan when air is drawn in.

[0010] Furthermore, in the helmet according to the present invention, the hair entanglement prevention structure is formed by the blades of the axial fan and vertical ribs in the cover member that radiate outward from the center of the axial fan, and when the blades and the vertical ribs intersect in the planar direction, it is preferable that the front edge of the blade in the rotational direction and the edge of the vertical rib located on the side opposite to the said edge are formed at an angle that gradually widens outward from the center of the blade so as to intersect.

[0011] In this case, the hair entanglement prevention structure may be formed by a blade having an edge portion on the front side in the rotational direction, which is provided along a straight line that is inclined at a predetermined angle in the opposite direction of rotation from a straight line that extends radially outward from the center side of the axial fan, and a vertical rib provided along a straight line that extends radially outward from the center side of the axial fan.

[0012] Furthermore, the hair entanglement prevention structure may be formed by the blades having edges provided along a straight line extending radially outward from the center of the axial fan, with the edges facing forward in the rotational direction, and the vertical ribs provided along a straight line that is inclined at a predetermined angle toward the rotational direction from the straight line extending radially outward from the center of the axial fan.

[0013] Furthermore, the hair entanglement prevention structure may be formed so as a whole that it is tilted at a predetermined angle by the blades having edges provided along a straight line that is inclined in the opposite direction of rotation from a straight line that extends radially outward from the center of the axial fan, and the vertical ribs provided along a straight line that is inclined in the direction of rotation from a straight line that extends radially outward from the center of the axial fan.

[0014] In other words, the hair entanglement prevention structure is preferably formed such that either or both of the front edge of the blade in the direction of rotation and the vertical ribs of the cover member are inclined at a predetermined angle, so that the distance between them gradually widens outward from the center of the blade.

[0015] Furthermore, in the helmet according to the present invention, the hair entanglement prevention structure may include an upright projection that protrudes without contacting the blades, at a position in the cover member that covers the vicinity of the base end of the blades of the axial flow fan. Furthermore, in the helmet according to the present invention, the hair entanglement prevention structure may include a hanging projection that protrudes from the base end of the blades of the axial fan without contacting the cover member. Furthermore, in the helmet according to the present invention, the hair entanglement prevention structure may include an upright projection that protrudes from the cover member at a position covering the vicinity of the base end of the blades of the axial fan without contacting the blades, and a downward projection that protrudes from the base end of the blades of the axial fan, located inside the upright projection provided on the cover member, without contacting the cover member.

[0016] In addition, in the helmet according to the present invention, it is preferable that the air passage is formed along positions corresponding to the frontal head, both left and right side heads, and the rear head when the wearer covers the impact-absorbing molded material on the head. Furthermore, in the helmet according to the present invention, it is preferable that the impact-absorbing molded material includes a convex portion protruding toward the helmet body on the rear head side.

Advantages of the Invention

[0017] According to the present invention, since the air inside the helmet is forcibly discharged by the axial flow fan, the stuffiness of the head is eliminated by the heat dissipation effect due to ventilation, and a more refreshing and comfortable cool feeling can be obtained. Moreover, due to the hair entanglement prevention structure, the hair of the wearer escapes (is eliminated) without being entangled in the axial flow fan. Furthermore, since it is provided with a cover member having a circular mesh shape in which the opening area is wider than the non-opening area, the loss of suction pressure is small, and the stuffiness can be sufficiently eliminated. Therefore, it is possible to provide a helmet that eliminates the risk of the wearer's hair being entangled in the blower fan and efficiently ventilates the inside of the helmet by discharging the air inside the helmet.

Brief Description of the Drawings

[0018] [Figure 1] It is a perspective view showing a helmet having a blowing function according to an embodiment of the present invention. [Figure 2] It is a plan view showing the functions of the impact-absorbing molded material and the blowing means constituting the helmet shown in FIG. 1. [Figure 3] It is a cross-sectional view taken along the line I-I of FIG. 2. [Figure 4] It is a partially enlarged view explaining the hair entanglement prevention structure of the blowing means indicated by the symbol A surrounded by a broken-line circle in FIG. 2. [Figure 5] It is a partially enlarged view explaining the hair entanglement prevention structure of the blowing means indicated by the symbol B surrounded by a broken-line circle in FIG. 3.

Modes for Carrying Out the Invention

[0019] Hereinafter, an example of an embodiment of a helmet having a blowing function according to the present invention will be described based on the drawings. Note that the embodiments described below are preferred specific examples of the present invention and are technically limited in various ways. However, the scope of the present invention is not limited to these embodiments unless otherwise specified in the following description.

[0020] As shown in FIG. 1, a helmet (hereinafter simply referred to as "helmet") 10 having a blowing function in the present embodiment is configured to include at least a helmet body 1, a shock-absorbing molding material 2, and a blowing means 3.

[0021] The helmet body 1 is formed in a substantially hemispherical shape using a lightweight and high-strength reinforced plastic such as, for example, ABS resin, PC resin, or FRP resin so as to protect the head of a wearer (such as a worker) from impact, and is a part so-called "cap body" in the helmet 10. Hereinafter, the helmet body 1 will be referred to as the cap body. When this cap body 1 receives a strong impact, it disperses the impact and is deformed or cracked to relieve the impact on the head of the wearer.

[0022] The shock-absorbing molding material 2 constitutes an interior body disposed inside the cap body 1, secures a certain interval between the cap body 1 and the head of the wearer as an interior body, and serves as a member for absorbing impact. That is, the helmet 10 is composed of the cap body 1 and an interior body disposed inside the cap body 1. The shock-absorbing molding material 2 is, like the cap body 1, a part so-called "shock-absorbing liner" in the helmet 10 that can be worn on the head of the wearer and is formed, for example, in a substantially hemispherical shape. Hereinafter, the shock-absorbing molding material 2 will be referred to as the shock-absorbing liner.

[0023] This interior lining consists of an impact-absorbing liner 2 positioned between the helmet shell 1 and the helmet, as well as a hammock (not shown) that improves the fit of the helmet 10 to the head and absorbs impact, a headband to adjust the helmet 10 to the wearer's head circumference, a chin strap to prevent the helmet 10 from falling off, and the like. The impact-absorbing liner 2 can be formed using, for example, expanded polystyrene, and has a concave groove-shaped air passage 22 on one surface facing the helmet body 1.

[0024] This air passage 22 is formed to connect the air intake port 21 provided in the impact-absorbing liner 2, to which the blowing means 3 is attached, with the outside of the helmet body 1. Specifically, as shown in Figure 2, for example, when the wearer covers their head with the shock-absorbing liner 2, air passages 22 are formed in the positions corresponding to the forehead, both sides of the head, and the back of the head, respectively, that is, from the top surface to the front, left and right sides, and back.

[0025] In this way, by forming air passages 22 along desired positions in the impact-absorbing liner 2, air can be efficiently and optimally expelled to the wearer's face, both ears, back of the head, neck, etc. Furthermore, by adjusting the width of the air passages 22 provided at each position, air can be expelled even more efficiently.

[0026] Furthermore, as shown in Figure 2, the impact-absorbing liner 2 is provided with a convex portion 23 that protrudes toward the helmet body 1 at a position corresponding to the rear of the head when the wearer is wearing it. In other words, the convex portion 23 creates a space between itself and the helmet body 1 on the back of the wearer's head. This convex portion 23 can be, for example, a 3 mm projection. In this way, the impact-absorbing liner 2 is equipped with a convex portion 23 that creates a space (increases the gap) between it and the helmet shell 1 on the back of the wearer's head, allowing more air to be expelled efficiently from the air passage 22 formed on the back of the head.

[0027] The air blowing means 3 is attached to the air intake port 21 provided in the impact-absorbing liner 2, and as shown in Figures 2 and 3, it has an axial flow fan 31 and a cover member 32. In other words, as shown by the white arrow in Figure 3, the air blowing means 3 has an axial flow fan 3 attached to the air intake port 21 provided in the impact-absorbing liner 2 so as to draw in air from the wearer's head side and discharge (blow) air toward the helmet body 1 side. The axial flow fan 3 shields the wearer's head side from the helmet body 1 side. Furthermore, the air blowing means 3 has a cover member 32 attached to the air intake side so as to cover the axial flow fan 3.

[0028] The air drawn in from the wearer's head by the aforementioned blowing means 3 is discharged (air blown) outwards towards the outside of the helmet body 1 through the air passage 22 formed on the helmet body 1 side of the impact-absorbing liner 2, as shown by the white arrows in Figure 2. Here, the wearer's head side refers to the side of the impact-absorbing liner 2 that does not have the air passage 22, and the helmet body 1 side refers to the side of the impact-absorbing liner 2 that has the air passage 22. Furthermore, the air intake port 21 to which the axial flow fan 3 is attached can be provided, for example, slightly rearward from the top surface of the impact-absorbing liner 2 (towards the back of the wearer's head).

[0029] Therefore, the air drawn in by the axial flow fan 31 passes between the impact absorbing liner 2 and the helmet shell 1 through a concave air passage 22 formed on one side of the helmet shell 1 side of the impact absorbing liner 2, as shown by the white arrows in Figure 2, and is discharged to the outside from the front, rear, and lower left and right sides of the helmet 10. Furthermore, if openings are provided on the top or sides of the helmet shell 1, the drawn-in air will be discharged from below and also to the outside through these openings.

[0030] The cover member 32 is interposed between the wearer's head and the axial fan 31 to prevent the wearer's hair from coming into contact with the axial fan 31, and is, for example, a circular mesh in which the opening area is wider than the non-opening area. Specifically, the cover member 32 is composed of longitudinal ribs 321 that spread radially like a spiderweb, and a plurality of annular transverse ribs 322 that intersect with these longitudinal ribs 321.

[0031] Since the cover member 32 has an opening area that is wider than the non-opening area, the loss of suction pressure by the axial flow fan 31 is reduced, preventing a decrease in airflow and improving ventilation performance, thereby effectively eliminating stuffiness inside the helmet.

[0032] The axial fan 31 and cover member 32 are equipped with a hair entanglement prevention structure that prevents the wearer's hair from being caught in the axial fan 31 as air is drawn in. This hair entanglement prevention structure is formed by the blades 312 of the axial fan 31 and the vertical ribs 321 that radiate outward from the center of the axial fan 31 in the cover member 32. More specifically, when the blades 312 and the vertical ribs 321 intersect (overlap) in the planar direction (when viewed from above), the front edge 312f of the blade 312 in the direction of rotation and the edge 321s of the vertical rib 321 located on the side opposite to the edge 312f are formed with an angle that widens so that they gradually intersect outward from the center of the blade 312.

[0033] Specifically, as shown in Figure 4, for example, the hair entanglement prevention structure is formed by a blade 312 having an edge portion 312f at the front of the rotational direction, which is provided along a straight line L2 (shown as a double-dotted line in the figure) that is inclined at a predetermined angle in the opposite direction of rotation (shown as a solid arrow in the figure) from a straight line L1 (shown as a dashed line in the figure) that extends radially outward from the center of the axial flow fan 31, and the edge portion 321s of a vertical rib 321 provided along a straight line L1 that extends radially outward from the center of the axial flow fan 31.

[0034] In Figure 4, the forward edge 312f of the blade 312 of the axial flow fan 31 is shown to be smaller and inclined by a predetermined angle θ compared to the opposing edge 321s of the longitudinal rib 321 of the cover member 32. In other words, the forward edge 312f of the blade 312 in the direction of rotation is inclined in the opposite direction to the direction of rotation of the axial flow fan 31 as it moves outward from the center of the axial flow fan 31. Therefore, the forward edge 312f of the blade 312 in the direction of rotation gradually intersects the opposing edge 321s of the vertical rib 321 in a planar manner, moving outward from the center of the blade 312.

[0035] Thus, since the blades 312 and the longitudinal ribs 321 are formed at an angle that causes them to gradually intersect outward from the center of the blade 312, even if the wearer's hair touches the axial fan 31, the hair will move outward along the front edge 312f of the blade 312 in the direction of rotation as the axial fan 31 rotates, as shown by the dashed arrow in Figure 4. In other words, hair in contact with the edge 312f of the blade 312 is smoothly released as the axial fan 31 rotates, being flicked away from the base end 312a to the outer circumference 312b of the blade 312. Therefore, the wearer's hair can be prevented from getting caught in the axial flow fan 31 that draws in air.

[0036] Such a hair entanglement prevention structure is not limited to the configuration described above. For example, it may be formed by a blade 312 having an edge portion 312f located in the forward direction of rotation, which is provided along a straight line L1 extending radially outward from the center of the axial flow fan 31, and opposing edge portions 321s of a vertical rib 321 provided along a straight line L2 that is inclined by a predetermined angle θ toward the rotation direction from the straight line L1 extending radially outward from the center of the axial flow fan 31.

[0037] Furthermore, the hair entanglement prevention structure may be formed such that, for example, the entire structure is tilted by a predetermined angle θ by the blade 312 having an edge portion 312f facing forward in the rotational direction, which is provided along a straight line L2 that is inclined in the opposite direction to the rotational direction from a straight line L1 that extends radially outward from the center of the axial flow fan 31, and by opposing edges 321s of a vertical rib 321 provided along a straight line L2 that is inclined in the rotational direction from a straight line L1 that extends radially outward from the center of the axial flow fan 31.

[0038] In other words, either the forward edge 312f of the blade 312 in the direction of rotation or the opposing edge 321s of the longitudinal rib 321 may be formed at a predetermined angle, or both may be formed at a predetermined angle. In this case, the predetermined angle is preferably such that it expands from the center of the axial flow fan 31 (the base end 312a of the blade 312) outward by 7 to 10 degrees.

[0039] Furthermore, as shown in Figure 5, the blowing means 3 has a hair entanglement prevention structure, and the cover member 32 has an annular upright projection 323 that protrudes toward the base end 312a side without contacting the blade 312, at a position that covers the vicinity of the base end 312a of the blade 312 of the axial flow fan 31. In other words, the upright projection 323 is formed in the cover member 32 as a wall-like projection extending toward the base end 312a of the blade 312 from a part of the frame that supports the motor 311 (for example, the back side of the transverse rib 322).

[0040] In this way, the cover member 32 is provided with an upright projection 323 at a position that covers the vicinity of the base end 312a of the blades 312 of the axial flow fan 31. This upright projection 323 acts as a wall, preventing the wearer's hair from getting caught in the shaft side of the axial flow fan 31.

[0041] Furthermore, as shown in Figure 5, the blowing means 3 has a hair entanglement prevention structure, in which the axial flow fan 31 has an annular hanging projection 313 at the base end 312a of the blade 312 that protrudes toward the cover member 32 without coming into contact with the cover member 32. In other words, the hanging projection 313 is formed in such a way that the base end 312a side, which covers the outer circumference of the motor 311, protrudes in a wall-like manner toward the cover member 32 side of the blade 312.

[0042] In this way, the cover member 32 is equipped with a hanging projection 313 at the base end 312a of the blade 312, so that the hanging projection 313 acts as a wall and prevents the wearer's hair from getting caught on the fan's axis.

[0043] Furthermore, since the cover member 32 has an upright projection 323 positioned to cover the area near the base end 312a of the blade 312 of the axial fan 31, and the axial fan 31 has a downward projection 313 at the base end 312a of the blade 312, the upright projection 323 of the cover member 32 and the downward projection 313 of the axial fan 31 combine to form a gap 33 with a complex shape resembling a right-angled crank road, which can more effectively prevent the wearer's hair from getting caught on the fan's axis.

[0044] The helmet 10 configured as described above includes a circular mesh cover member 32 in which the opening area is wider than the non-opening area. This prevents the wearer's hair from getting caught in the axial flow fan 31, while suppressing pressure loss from the wearer's head side and improving ventilation performance.

[0045] Therefore, without causing a decrease in the amount of air (air volume) expelled to the outside of the helmet shell 1, it is possible to forcibly ventilate the entire head of the wearer, creating a comfortable head environment, reducing discomfort caused by heat, and improving work efficiency. In other words, a more refreshing and pleasant cooling sensation can be obtained. Furthermore, the design of the air passage 22 allows for adjustment of the amount of air expelled from the lower front of the helmet 10, thereby preventing the wearer's glasses or goggles from fogging up.

[0046] Although not shown in the diagram, a battery that powers the axial fan 31 is located in the rear of the helmet shell 1. This battery has a power switch for activating the axial fan 31 at will. It is also desirable that the battery be removable and replaceable. Furthermore, the battery is not limited to the area corresponding to the back of the head on the helmet shell 1; any appropriate location such as the outer surface of the helmet shell 1 can be selected. [Industrial applicability]

[0047] The helmet equipped with a ventilation function according to the present invention is not limited to use during work in factories or construction sites, but is also expected to be used when riding motorcycles, bicycles, racing cars, etc. [Explanation of Symbols]

[0048] 1. Helmet shell (helmet body) 2. Shock-absorbing liner (shock-absorbing molded material) 3. Delivery method 10 helmets 21 Air intake port 22 Air passage 23 Convex part 31 Axial flow fan 32 Cover component 33 gaps 311 Motor 312 feathers 313 Drooping convex part 321 Vertical Rib 322 Transverse Rib 323 Erect protrusion

Claims

1. The helmet body protects the head from impact, An interior lining disposed inside the helmet body, comprising an impact-absorbing molded material formed in a shape that can be fitted onto the wearer's head, A blowing means is attached to an air intake port provided in the aforementioned shock-absorbing molded material, It is configured to include at least the following: The impact-absorbing molded material has an air passage on one side of the helmet body that connects the air intake to which the blowing means is attached to the outside of the helmet body, The helmet is characterized in that the blowing means has an axial fan that draws in air from the wearer's head side and discharges the air to the inside of the helmet body and the outside of the shock-absorbing molded material through the air passage, and a circular mesh cover member interposed between the wearer's head and the axial fan to prevent the wearer's hair from coming into contact with the axial fan, and further comprises a hair entrapment prevention structure that prevents the wearer's hair from being caught in the axial fan as air is drawn in.

2. The hair entanglement prevention structure is formed by the blades of the axial fan and vertical ribs that radiate outward from the center of the axial fan in the cover member. The helmet according to claim 1, characterized in that when the wing and the longitudinal rib intersect in the planar direction, the front edge of the wing in the rotational direction and the edge of the longitudinal rib located on the side opposite to the said edge are formed at an angle that gradually widens outward from the center of the wing so as to intersect.

3. The helmet according to claim 2, characterized in that the hair entanglement prevention structure is formed by the blades having edges on the front in the direction of rotation that are provided along a straight line that is inclined at a predetermined angle in the opposite direction of rotation from a straight line that extends radially outward from the center of the axial fan, and the vertical ribs provided along a straight line that extends radially outward from the center of the axial fan.

4. The helmet according to claim 2, characterized in that the hair entanglement prevention structure is formed by the blades having edges provided along a straight line extending radially outward from the center of the axial fan, with the edges facing forward in the rotational direction, and the vertical ribs provided along a straight line that is inclined at a predetermined angle toward the rotational direction from the straight line extending radially outward from the center of the axial fan.

5. The hair entanglement prevention structure is formed so as a whole by the blades having edges provided along a straight line that is inclined in the opposite direction of rotation from a straight line that extends radially outward from the center of the axial fan, and the vertical ribs provided along a straight line that is inclined in the direction of rotation from a straight line that extends radially outward from the center of the axial fan, so that the structure as a whole is inclined at a predetermined angle, as described in claim 2.

6. The helmet according to claim 2, characterized in that the hair entanglement prevention structure includes an upright protrusion in the cover member that protrudes without contacting the blades, at a position that covers the vicinity of the base end of the blades of the axial flow fan.

7. The helmet according to claim 2, characterized in that the hair entrapment prevention structure includes a hanging projection at the base end of the blades of the axial fan that does not come into contact with the cover member.

8. The helmet according to claim 2, characterized in that the hair entanglement prevention structure includes an upright projection on the cover member that protrudes without contacting the blades, at a position that covers the vicinity of the base end of the blades of the axial fan, and a downward projection on the axial fan that protrudes from the base end of the blades, located inside the upright projection on the cover member, without contacting the cover member.

9. The helmet according to claim 1, characterized in that the air passages are formed along positions corresponding to the forehead, both sides of the head, and the back of the head when the wearer covers the head with the shock-absorbing molded material.

10. The helmet according to claim 1, characterized in that the impact-absorbing molded material has a convex portion that protrudes toward the helmet body on the occipital side.

Images