helmet

Abstract

To provide a technology that can further reduce the temperature and humidity inside a helmet. [Solution] A helmet (10) for cooling the head of a wearer (W), comprising: a dome-shaped shell (11) for covering the head; a hammock (14) attached to the shell (11) for contacting the head when the helmet (11) is worn and for separating the inner wall of the shell (11) from the head; and a cooling fan (20) for exhausting air drawn in from outside the helmet (11) toward the head through the gap between the inner wall of the shell (11) and the head when the helmet (10) is worn.

Description

[Technical Field]

[0001] The present invention relates to a helmet for protecting a person's head. [Background technology]

[0002] Conventionally, workers at manufacturing plants, construction sites, civil engineering sites, and the like, as well as drivers of motorcycles and other vehicles, wear helmets to protect their heads. Because helmets are designed to cover the wearer's head, the temperature inside the helmet rises, especially when used outdoors in direct sunlight. This not only causes discomfort to the helmet wearer, but also reduces their ability to concentrate, potentially leading to heatstroke. Patent Document 1 discloses a known helmet designed to reduce this temperature rise inside the helmet.

[0003] This helmet is characterized by comprising a helmet body having a first air vent formed therein, and a partition portion provided inside the helmet body, which defines a partition space between the helmet body and the partition portion that communicates with the first air vent, and which has a second air vent formed at a predetermined position that communicates with the partition space.

[0004] With such a helmet, the first and second ventilation holes allow the space between the helmet and the wearer's head to communicate with the outside, thereby reducing the temperature and humidity inside the helmet. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Registered Utility Model No. 3213691 Summary of the Invention [Problem to be solved by the invention]

[0006] The problem that the embodiments of the present invention aim to solve is to provide a technology for further reducing the temperature and humidity inside a helmet. [Means for solving the problem]

[0007] In order to solve the above problems, an embodiment of the present invention is a helmet that cools the wearer's head, and includes a dome-shaped shell that covers the head, a hammock that comes into contact with the head when the helmet is worn and is provided on the shell so as to separate the inner wall of the shell from the head, and a cooling fan that exhausts air drawn in from outside the helmet toward the head through the gap between the inner wall of the shell and the head when the helmet is worn. [Effects of the Invention]

[0008] According to the present invention, the temperature and humidity inside the helmet can be further reduced. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a schematic diagram illustrating a cooling system according to an embodiment. [Figure 2] FIG. 1 is a side view showing a helmet according to an embodiment. [Figure 3] FIG. 1 is a plan view showing a helmet according to an embodiment. [Figure 4] FIG. 4 is a cross-sectional view taken along line AA in FIG. [Figure 5] FIG. 2 is a plan view showing the cooling fan according to the embodiment. [Figure 6] FIG. 2 is a side view showing the cooling fan according to the embodiment. [Figure 7] 1 is a schematic diagram showing airflow in a helmet according to an embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, the present invention will be described as being applied to a helmet as an industrial protective headgear. In this specification and drawings, components having substantially the same functional configuration are designated by the same reference numerals, and redundant description will be omitted.

[0011] (Cooling system) A cooling system including a helmet according to this embodiment will be described. Fig. 1 is a schematic diagram showing the cooling system according to this embodiment. Note that Fig. 1 shows the helmet as seen from the front side, with some components omitted.

[0012] 1, the cooling system 1 according to this embodiment includes a helmet 10 equipped with a cooling fan 20, a power source 30, and a power cable 40. The cooling fan 20 is provided so as to be able to generate an airflow inside the helmet 10, as will be described in detail later. The power source 30 is a source of power for driving the cooling fan 20, and is, for example, a battery. The power cable 40 is an electric wire that electrically connects the power source 30 and the cooling fan 20 so as to be able to supply power from the power source 30 to the cooling fan 20.

[0013] The power source 30 may be configured as a portable mobile battery, or as a large battery that cannot be carried by hand. When the power source 30 is configured as a mobile battery, the power source 30 may be attached to a belt wrapped around the waist of lower body clothing worn by the wearer of the helmet 10, or may be stored in a pocket of upper body clothing or lower body clothing worn by the wearer of the helmet 10. When the power source 30 is configured as a large battery, the power source 30 may be placed on a cart that can be towed by the helmet wearer. The power source 30 may also be stored in the housing 21 of the cooling fan 20.

[0014] (Helmet configuration) The configuration of the helmet according to this embodiment will be described. Fig. 2 is a side view showing the helmet according to this embodiment. Fig. 3 is a plan view showing the helmet according to this embodiment. Fig. 4 is a cross-sectional view taken along line AA in Fig. 3.

[0015] As shown in Figures 2 to 4, the helmet 10 of this embodiment includes a cap body 11, a cooling fan 20, a partition wall portion 12, an impact absorbing runner 13, a hammock 14, a headband 15, two ear straps 16, and a chin strap 17.

[0016] The cap body 11 is a dome-shaped member that covers the wearer's head, more specifically, a roughly hemispherical member that defines an internal space and has an open bottom. A brim 11B that protrudes forward (left side in FIG. 2 ) is formed on the periphery of the cap body 11. The partition 12 is a roughly hemispherical member that defines an internal space and has an open bottom, and is smaller than the cap body 11. The partition 12 is provided in the internal space of the cap body 11 so that its periphery follows the periphery of the cap body 11. The shock absorbing runner 13 is a member that follows the curved inner periphery of the partition 12, and is made of a material that can absorb shock, such as polystyrene foam.

[0017] The headband 15 is formed in a ring shape capable of surrounding the wearer's head, and its circumferential distance is formed to be smaller than the circumferential distance of the peripheral edge of the inner wall surface of the partition 12. The hammock 14 is a member formed in a generally X-shape in plan view by connecting two strip-shaped members each extending in one direction so that they intersect at approximately the center in the extension direction. The four ends of the hammock 14 are fixed to the headband 15 so as to be attached at different positions in the circumferential direction of the headband 15. The headband 15 and hammock 14 bring the wearer's head into contact with the headband 15 and hammock 14 and separate it from the partition 12 and the shock absorbing runner 13. This improves the wearing comfort of the helmet 10 and attenuates impacts applied from outside the helmet 10 before they reach the wearer's head.

[0018] The two ear straps 16 are string-like members attached to the periphery of the cap body 11 so as to face each other in the left-right direction (left-right direction in Fig. 3). The two ear straps 16 are attached to different positions in the front-to-back direction (left-right direction in Figs. 2 and 4) relative to the cap body 11. The chin strap 17 is a band-like member with one end attached to one ear strap 16 and the other end attached to the other ear strap 16.

[0019] The cooling fan 20 is provided in the internal space of the cap body 11, in a portion located approximately in the center in a plan view, i.e., near the top of the wearer's head. The cooling fan 20 is provided between the cap body 11 and the hammock 14, more specifically, between the partition wall 12 and the hammock 14. The power cable 40 connected to the cooling fan 20 is routed along the inner peripheral wall of the partition wall 12 and the shock absorbing runner 13, as shown in FIG. 4, and is led out from the rear of the cap body 11 (the right side in FIG. 4). As a result, the power cable 40 passes behind the neck of the wearer, and the power cable 40 is prevented from interfering with the wearer's head movements, particularly movements to turn left and right.

[0020] (Cooling fan configuration) The configuration of the cooling fan according to this embodiment will be described below. Fig. 5 is a plan view showing the cooling fan according to this embodiment. Fig. 6 is a side view showing the cooling fan according to this embodiment.

[0021] 5 and 6, cooling fan 20 is configured as an axial flow fan and includes a housing 21, a motor 22, and a propeller 23. Housing 21 defines an accommodation space, and motor 22 and propeller 23 are accommodated within this accommodation space.

[0022] The housing 21 is formed as a whole in a cylindrical shape with one bottom surface having a smaller diameter than the other bottom surface, and the reduced-diameter bottom surface is fixed to the impact absorbing runner 13 or passes through the impact absorbing runner 13 and is fixed to the partition wall portion 12. Therefore, when the helmet 10 is worn, the reduced-diameter bottom surface faces upward, and therefore in the following description, the reduced-diameter bottom surface will be referred to as the upper surface, and the other bottom surface will be referred to as the lower surface.

[0023] The side of the housing 21 is inclined so that the upper surface thereof gradually approaches the upper surface edge, and this inclined side is formed with an intake hole 211 that connects the storage space with the outside. The lower surface of the housing 21 is formed with an exhaust hole 212 that connects the storage space with the outside.

[0024] Motor 22 has a rotating shaft 221 and is fixed to the upper surface of the housing space so that rotating shaft 221 faces downward. Propeller 23 is connected to rotating shaft 221 so that it can rotate integrally with the housing, with the air blowing direction facing the height direction of the housing. Motor 22 rotates rotating shaft 221 so that propeller 23 causes air to flow from the upper surface side to the lower surface side. As a result, air that has been drawn into the housing space through intake hole 211 is exhausted to the outside through the exhaust hole.

[0025] (Cooling system operation) The operation of the cooling system according to this embodiment will now be described. Figure 7 is a schematic diagram showing the airflow in the helmet according to this embodiment.

[0026] 7, when the cooling fan 20 is operated, air is drawn in from the intake holes 211 formed on the side of the housing 21, and air is drawn in from outside the helmet 10 through a gap formed between the head of the wearer W and the partition 12 or the impact absorbing runner 13, thereby generating an airflow in the gap. In addition, when air is exhausted from the exhaust holes 212 formed on the bottom surface of the housing 21, an airflow is generated toward the top of the wearer's head.

[0027] Thus, with the cooling system 1 according to this embodiment, two air flows are generated around the head of the wearer W: an air flow generated in the gap and an air flow directed toward the vicinity of the top of the head. This reduces the temperature and humidity inside the helmet 10 not only by the exhaust air from the cooling fan 20 but also by the intake air, improving the comfort of the wearer W. Furthermore, with the cooling system 1 according to this embodiment, there is no need to form holes in the cap body 11 to allow outside air to flow into the helmet 10, improving the comfort of the wearer W without compromising safety.

[0028] The present invention can be embodied in various other forms without departing from the spirit or main characteristics thereof. Therefore, the above-described embodiments are merely illustrative in all respects and should not be interpreted as limiting. The scope of the present invention is defined by the claims and is not limited to the text of the specification. Furthermore, all modifications, improvements, substitutions, and alterations within the scope of the claims are within the scope of the present invention. [Explanation of symbols]

[0029] 1. Cooling system 11 Cap body 12 Bulkhead 13 Shock absorbing runner 14. Hammock 15 Headbands 20 Cooling fan W wearer

Claims

1. A helmet for cooling the wearer's head, A hat body formed in a dome shape to cover the head; a hammock provided on the cap body so as to come into contact with the head when the helmet is worn and to separate the inner wall of the cap body from the head; a cooling fan that, when the helmet is worn, exhausts air taken in from outside the helmet through a gap between the inner wall of the helmet body and the head toward the head; A helmet equipped with:

2. The cooling fan is connected to a power source via a power cable, 2. The helmet according to claim 1, wherein the power cable is led out of the helmet by passing behind the head when the helmet is worn.

3. Further provided is a partition portion covering the inner wall of the cap body, 2. The helmet according to claim 1, wherein the cooling fan draws air from outside the helmet through a gap between the inner wall of the partition and the head when the helmet is worn.

4. further comprising an impact absorbing runner covering an inner wall of the partition portion, 4. The helmet according to claim 3, wherein the cooling fan draws air from outside the helmet through a gap between an inner wall of the impact absorbing runner and the head when the helmet is worn.

5. 2. The helmet according to claim 1, wherein the cooling fan is an axial fan.

6. The helmet according to any one of claims 1 to 5, wherein the power source is a battery.

7. 7. The helmet according to claim 6, wherein the power source is a mobile battery that is attached to the waist of the wearer.

8. 8. The helmet according to claim 7, wherein the power source is attached to the wearer's waist via a belt.

9. 8. The helmet of claim 7, wherein the power source is contained within a pocket of clothing worn by the wearer.

10. 7. The helmet of claim 6, wherein the power supply is housed within a housing of the cooling fan.

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