Accessory attachment device and helmet device

Abstract

To provide an accessory attachment device and a helmet device that allow helmet accessories to be replaced.SOLUTION: An accessory attachment device includes a helmet 10 and an accessory attachment device 20 for attaching a fan unit 22 as an accessory to the helmet 10. The accessory attachment device 20 includes a flexible sheet body 21 that is attached to the helmet, and a support sheet 23 to which a fan unit 22 is attached and which is detachable from the sheet body 21. The fan unit 22 is driven to blow air toward a wearer. By replacing the support sheet 23, the helmet 10 can have various additional functions in addition to its functions of providing protection from the sun and wind.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an accessory mounting device and a helmet device to which accessories can be mounted on a helmet.

Background Art

[0002] In order to improve the wearing comfort of an operator wearing a helmet, accessories may be attached to the helmet. In Patent Document 1, a bag-shaped body having an opening on the upper side is attached to the edge portion on the back side of the helmet, and a fan unit is placed inside the bag-shaped body. Then, by blowing out the air taken in by the fan unit upward, it is sent into the helmet to suppress the stuffiness inside the helmet.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Means for improving the wearing comfort of a helmet vary depending on the working environment of the operator. In a hot environment, a fan unit or the like is desired for suppressing stuffiness. On the other hand, in a cold environment, a heater or the like is desired. Thus, the accessory functions required for a helmet differ depending on the working environment. Also, for example, even if the accessory is a fan unit, if it can be removed in an unnecessary environment, the helmet can be made lighter, thereby improving the wearing comfort.

Means for Solving the Problems

[0005] The accessory mounting device for solving the above problems is an accessory mounting device for attaching accessories to a helmet, and includes a flexible seat body attached to the helmet, and a support seat to which the accessory is attached and which is attached to the seat body.

[0006] According to the above configuration, the support seat to which the accessory is attached can be replaced with respect to the seat body attached to the helmet. The seat body is a seat attached to the helmet for uses such as sunshade and windbreak. The accessory is a fan unit, a heat source body, etc. Therefore, by replacing the support seat, the helmet can add various functions in addition to functions such as sunshade and windbreak.

[0007] In the above accessory mounting device, the accessory may be a fan unit, the support seat may be provided with a through hole, and the fan unit may be configured to be attached to the outer surface of the seat body so that the fan unit is located in the through hole.

[0008] According to the above configuration, the fan unit can be attached to the seat body via the support seat. For example, the fan unit is driven to blow air toward the wearer side. By driving the fan unit in this way, outside air can be sent into the space between the head and the inner surface of the helmet.

[0009] In the above accessory mounting device, the fan unit may include a first half body and a second half body that are butt-joined, and the first half body and the second half body may be butt-joined in a state of sandwiching the peripheral edge of the through hole, so as to be attached to the support seat while constituting the fan unit. According to the above configuration, the fan unit can be easily attached to the peripheral edge of the through hole of the support seat.

[0010] In the above-described accessory mounting device, an annular support ring portion having a resilience higher than that of the support sheet is disposed at the peripheral portion of the through hole, and the first half body and the second half body may be configured to be butt-joined in a state where the peripheral portion of the through hole is sandwiched together with the support ring portion.

[0011] According to the above configuration, by being attached to the peripheral portion of the through hole of the support sheet with the support ring portion having a higher resilience than the support sheet interposed therebetween, the fan unit can be stably attached to the support sheet.

[0012] In the above-described accessory mounting device, for example, the through hole is a circular hole corresponding to the size of the fan unit. According to the above configuration, the fan unit can be supported over the entire circumference of the peripheral portion of the through hole. Thereby, the fan unit is firmly attached to the support sheet.

[0013] In the above-described accessory mounting device, the through hole is a vertically long hole, and the fan unit may be configured to be attachable at a plurality of positions in the vertical direction in the through hole. According to the above configuration, the mounting position of the fan unit can be adjusted according to the size and preference of the wearer.

[0014] In the above-described accessory mounting device, the through hole is a vertically long hole, and an annular support ring portion having a resilience higher than that of the support sheet is disposed at the peripheral portion of the through hole. The first half body and the second half body are butt-joined in a state where the peripheral portion of the through hole is sandwiched together with the support ring portion. The support ring portion may be configured to include an upper support portion for supporting the fan unit in an upper position and a lower support portion for supporting the fan unit in a lower position.

[0015] According to the above configuration, the fan unit is attached to the peripheral edge of the through hole of the support sheet with a support member having a higher resilience than the support sheet, so that the fan unit can be stably attached to the support sheet. By selectively attaching the fan unit to the upper support portion and the lower support portion, the attachment position of the fan unit can be adjusted according to the size and preference of the wearer.

[0016] In the above accessory attachment device, the seat body may be configured to be detachably attached by an attachment member to a region of the edge of the helmet extending from both side surfaces to the back surface. According to the above configuration, the seat body can be attached to a position that does not obstruct the wearer's vision and functions as a sunshade, windbreak, etc.

[0017] In the above accessory attachment device, the edge of the helmet may be provided with a flange portion that extends to the outside of the helmet in a region from both side surfaces to the rear surface, and the seat body may be configured to be detachably attached to the flange portion by the attachment member. According to the above configuration, the seat body can be easily attached using the attachment member by effectively utilizing the flange portion provided in many helmets.

[0018] In the above accessory attachment device, the attachment member may be configured by a clip. According to the above configuration, the attachment and detachment of the seat body to and from the helmet can be easily performed. Also, the attachment position of the seat body to the helmet can be easily adjusted.

[0019] In the above accessory attachment device, the seat body and the support sheet may be configured of a fabric in which a cloth is sandwiched between soft synthetic resins. According to the above configuration, by using a fabric in which a cloth is sandwiched between soft synthetic resins for the seat body and the support sheet, the occurrence of unraveling at the cut end and the like can be suppressed.

[0020] In the above accessory mounting device, the seat body may include a collar portion disposed at the mounting edge portion for the helmet, and the collar portion may be configured to have a resilience greater than that of the seat body. According to the above configuration, the mounting edge portion of the flexible seat body is reinforced by the collar portion. Thereby, the seat body can be firmly mounted to the helmet.

[0021] In the above accessory mounting device, a support member having a resilience higher than that of the support seat may be provided on the outer surface of the seat body on the side opposite to the wearer, and the support member may be configured to include a support ring portion disposed at the periphery of the through hole where the fan unit is located and a connecting portion connected to the collar portion.

[0022] According to the above configuration, the fan unit can be stably mounted to the support seat by being mounted to the periphery of the through hole of the support seat with the support ring portion interposed therebetween. In addition, the fan unit can be more stably supported by connecting the collar portion and the support ring portion with the connecting portion.

[0023] A helmet device for solving the above problems includes a helmet and an accessory mounting device for mounting an accessory to the helmet, and the accessory mounting device includes a flexible seat body mounted to the helmet and a support seat to which the accessory is mounted and which is mounted to the seat body.

Effect of the Invention

[0024] According to the present invention, accessories of a helmet can be exchanged. Thereby, various functions of the helmet can be added, and the wearing comfort can be improved.

Brief Description of the Drawings

[0025]

Figure 1

Figure 2

Figure 3

Figure 4

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Figure 6

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Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Best Mode for Carrying Out the Invention

[0026] Hereinafter, an accessory mounting device and a helmet device according to the present invention will be described with reference to the drawings. <Overall Configuration of Helmet Device> As shown in FIG. 1, the helmet device according to the present embodiment includes a helmet 10 and an accessory mounting device 20. The accessory mounting device 20 is a sheet member (flap) that hangs down in a region from both side surfaces to the back surface of the helmet 10 and is used as a sunshade, windbreaker, etc. And a fan unit 22 is attached to the accessory mounting device 20 as an accessory. The helmet device has a function of blowing air to the wearer's neck muscles 2 and the inside of the helmet 10 when the accessory mounting device 20 is attached to the helmet 10. In the present embodiment, the accessory mounting device 20 is a fan mounting device to which the fan unit 22 is attached.

[0027] In the helmet device of the present embodiment, the front direction refers to the direction in which the face faces when the wearer wears the helmet 10, and the rear direction refers to the direction of the back of the head. Also, the right side of the wearer is referred to as the right side surface direction, and the left side is referred to as the left side surface direction.

[0028] <Configuration of Helmet> The helmet 10 includes a cap body 11. The cap body 11 has a substantially hollow hemispherical shape. The cap body 11 is formed in a substantially hemispherical shape from a resin material such as ABS resin. The cap body 11 has a mounting opening end 11a formed on the lower surface. In the region of the cap body 11 in the front direction and near the opening end 11a, a visor portion 13 that protrudes forward to protect the user's face from rain, falling objects, etc. is provided. Further, the cap body 11 is provided with a flange portion 14 near the opening end 11a and other than the visor portion 13. The flange portion 14 is a concave groove that opens upward, for example, a rain gutter. And as will be described later, the accessory mounting device 20 is attached to the flange portion 14 via a mounting member 24.

[0029] An impact-absorbing material such as styrofoam may be disposed on the inner surface of the cap body 11. Further, a hammock may be attached to the inner surface of the cap body 11. The hammock has flexibility and has a curved shape adapted to the wearer's head as its basic shape. The hammock includes an elliptical ceiling portion located at the top of the head and a plurality of legs extending radially from the ceiling portion. Each leg is attached directly or indirectly to the inner surface of the cap body 11 near the open end 11a formed on the lower surface of the cap body 11.

[0030] <First Embodiment> <Description of the accessory attachment device> As shown in FIGS. 1 and 2, the accessory attachment device 20 includes a seat body 21, a fan unit 22 as an accessory, and a support seat 23. The accessory attachment device 20 functions as a sunshade or a windbreaker by covering the neck muscles 2. In addition to this, the accessory attachment device 20 blows air to the inside of the helmet 10, the neck muscles 2, and the neck area by the fan unit 22.

[0031] The seat body 21 and the support seat 23 are made of a fabric in which a woven fabric is sandwiched between soft synthetic resins. Such a fabric is a vinyl chloride-based multilayer material in which a vinyl chloride sheet is laminated or sandwiched between a cloth or a woven fabric, or a vinyl chloride paint is applied. Further, it is a sheet in which vinyl chloride resin is laminated on both sides of a woven fabric of synthetic fibers such as polyester and nylon. Such a fabric has flexibility, is less likely to tear compared to a cloth carrier or a single vinyl chloride sheet, and has excellent durability. Also, such a fabric is less likely to come apart even at the cut end. The seat body 21 and the support seat 23 are formed by punching out from a raw fabric. The seat body 21 includes a flexible seat portion that can be bent when pushed against the air blowing surface of the fan unit 22 or when the air from the fan unit 22 hits it.

[0032] <Description of the seat body> As shown in FIGS. 1 and 2, the sheet body 21 is a rectangular sheet material. In the sheet body 21, the length of its long side has a length that can be attached from one side surface of the cap body 11 through the back surface to the other side surface. In the sheet body 21, the lengths of its right short side 21c and left short side 21d are such that when the upper long side 21a of the sheet body 21 is attached to the flange portion 14 of the cap body 11, the lower long side 21b extends to the vicinity of the wearer's shoulder. The upper long side 21a, lower long side 21b, right short side 21c, and left short side 21d are in a straight line shape. Of course, at least one of the upper long side 21a, lower long side 21b, right short side 21c, and left short side 21d may have a shape other than a straight line shape, for example, a wavy line shape. Also, the lower long side 21b, right short side 21c, and left short side 21d may be in an arc shape that bulges outward or recesses inward.

[0033] As shown in FIG. 3, when the sheet body 21 is attached to the flange portion 14 of the helmet 10 through the attachment member 24, it includes an inner surface 21y that is the surface on the side of the wearer's neck muscle 2 and an outer surface 21x that is on the side opposite to the wearer's neck muscle 2. The space between the wearer's neck muscle 2 and the inner surface 21y is the inner space 25a, and behind the outer surface 21x is the outer space 25b. The outer space 25b is a space where the fan unit 22 is attached.

[0034] The sheet body 21 has a wind diffusion portion 26 at approximately the central portion that faces the fan unit 22. The wind diffusion portion 26 is a region where the air blown from the fan unit 22 directly hits and diffuses the wind in all directions. Also, the wind diffusion portion 26 is a region that is pushed in the direction of the neck muscle 2 by the air blowing surface of the fan unit 22. The wind diffusion portion 26 has a larger area than the air blowing surface of the opposing fan unit 22. The periphery of the wind diffusion portion 26 is provided with a plurality of air holes 27. In this embodiment, the plurality of air holes 27 are four. The plurality of air holes 27 include an upper air hole 27a and a lower air hole 27b. Also, the plurality of air holes 27 include a right air hole 27c and a left air hole 27d. The upper air hole 27a, lower air hole 27b, right air hole 27c, and left air hole 27d are provided symmetrically with respect to the central line extending vertically through the attachment center of the attached fan unit 22 as the axis of symmetry.

[0035] As shown in FIGS. 3 and 4, the upper air hole 27a is located above the air diffusion portion 26. The upper air hole 27a has a horizontal single-character shape and is a linear slit. Also, the upper air hole 27a is wider in the left-right direction than the lower air hole 27b. The upper air hole 27a has a length longer than the maximum dimension in the left-right direction, i.e., the maximum outer diameter, of the circular fan unit 22 when the fan unit 22 is attached. The midpoint of the upper air hole 27a in the left-right direction is located above the mounting center of the attached fan unit 22. As a result, both ends of the upper air hole 27a will be located further outside the left-right ends of the arranged fan unit 22. The upper air hole 27a is pushed against the air blowing surface of the fan unit 22, and the air diffusion portion 26 bends toward the inner space 25a side, so that the upper and lower ends forming the slit are displaced front and back to form a ventilation path for air to pass through. Thereby, a part of the diffused air diffused by the air diffusion portion 26 is widely blown upward through the upper air hole 27a.

[0036] The lower air hole 27b is located below the air diffusion portion 26. The lower air hole 27b is narrower in the left-right direction than the upper air hole 27a. The lower air hole 27b has a shape that is wider in the left-right direction on the lower side than on the upper side. In the present embodiment, the lower air hole 27b has a trapezoidal shape or an upper chord shape, and the upper edge is close to the air diffusion portion 26. The length of the lower air hole 27b in the left-right direction is formed shorter on the upper edge side than on the lower edge side. The maximum width of the lower air hole 27b in the left-right direction is the same as the maximum dimension in the left-right direction, i.e., the maximum outer diameter, of the circular fan unit 22 when the fan unit 22 is attached. The lower air hole 27b is pushed against the air blowing surface of the fan unit 22 and bends toward the inner space 25a side, so that a ventilation path for air to pass through is formed. Thereby, a part of the diffused air diffused by the air diffusion portion 26 is widely blown toward the upper body direction of the wearer through the lower air hole 27b.

[0037] The right air hole 27c is located on the right side with respect to the air diffusion part 26. The left air hole 27d is located on the left side with respect to the air diffusion part 26. Each of the right air hole 27c and the left air hole 27d has a right-angled triangle shape. In each of the right air hole 27c and the left air hole 27d, the smallest inner corner part is located on the lower side, and the opposite side part with respect to the inner corner part is located on the upper side. Also, in each of the right air hole 27c and the left air hole 27d, the adjacent side part is close to the air diffusion part 26, and the hypotenuse part is located farther away from the adjacent side part. The opposite side part connected to the upper end of the adjacent side part is perpendicular to the adjacent side part. For example, the smallest inner corner part is at the same height as the lower edge of the lower air hole 27b. The opposite side part located on the upper side is located lower than the position of the upper air hole 27a. Also, the opposite side part is located below the upper end of the attached fan unit 22. Each of the right air hole 27c and the left air hole 27d is pushed by the blowing surface of the fan unit 22, and when the air diffusion part 26 bends toward the inner space 25a side, a ventilation path for air to pass through is formed. Thereby, a part of the diffused air diffused by the air diffusion part 26 is widely blown out in the direction around the wearer's neck through the right air hole 27c and the left air hole 27d.

[0038] Between the upper air hole 27a and the right air hole 27c, between the upper air hole 27a and the left air hole 27d, between the lower air hole 27b and the right air hole 27c, and between the lower air hole 27b and the left air hole 27d are connecting parts 30 that connect the air diffusion part 26 and the area outside the air holes 27. The connecting parts 30 are pushed by the blowing surface of the fan unit 22 and will bend in the direction of the neck muscles 2. Also, the connecting parts 30 act to bend in the same direction by being pushed by the blowing from the blowing surface of the fan unit 22. That is, the seat body 21 includes an air diffusion part 26 at the central part, a plurality of air holes 27 around the air diffusion part 26, and a peripheral part 23a outside the air holes 27. The air diffusion part 26 and the peripheral part 23a are connected by the connecting parts 30 between the plurality of air holes 27. And at least the air diffusion part 26 and the connecting parts 30 constitute a flexible sheet part that bends by being pushed by the blowing surface of the fan unit 22 or by being pushed by the blowing.

[0039] As shown in FIGS. 4 and 5, in the sheet body 21, a color portion 28 is disposed at a position along the upper long side 21a. The upper long side 21a is an attachment edge portion where the color portion 28 is disposed. The color portion 28 is fixed along the upper long side 21a by an adhesive, welding, or the like. The color portion 28 is an elongated rectangular plate and is a long member. The color portion 28 may be slightly shorter, but has the same length as the upper long side 21a. The color portion 28 is a rectangular plate having a higher resilience than the sheet body 21 and is, for example, a synthetic resin plate. The color portion 28 is disposed between the upper long side 21a and the upper air hole 27a while being along the upper long side 21a. The color portion 28 reinforces the sheet body 21 and makes it less likely to bend than the sheet body 21, thereby facilitating attachment to the flange portion 14 of the cap body 11. Note that the color portion 28 may be disposed so as to protrude above the upper long side 21a.

[0040] The color portion 28 is provided with attachment holes 29 that penetrate the color portion 28 and the sheet body 21. In the present embodiment, six attachment holes 29 are provided, four of which are central attachment holes 29a, and the remaining two are outer attachment holes 29b. The central attachment holes 29a are provided in pairs, two on each side, with a center line extending vertically through the center in the longitudinal direction of the color portion 28 as the axis of symmetry. The two central attachment holes 29a located on the inner side among the four central attachment holes 29a are spaced apart from each other and serve as a distance variable portion 31, which will be described later. Note that only two central attachment holes 29a may be provided at positions that are line-symmetric with respect to the central attachment holes 29a. The outer attachment holes 29b are located outside the central attachment holes 29a located on the outer side. Each outer attachment hole 29b is located near the end of the color portion 28. Each of the central attachment holes 29a is a horizontally long slot. The outer attachment hole 29b is a cross-shaped hole formed by overlapping a vertically long hole with a horizontally long slot. Each of the attachment holes 29 is engaged with an attachment member 24.

[0041] Between a pair of central mounting holes 29a located on the inner side, a distance variable portion 31 that varies the distance between the fan unit 22 and the collar 2 is configured. Between the central mounting holes 29a, as the distance variable portion 31, a pair of inner folded lines 32 parallel to each other and a pair of outer folded lines 33 are provided. The inner folded line 32 and the outer folded line 33 are straight folded lines extending in the vertical direction. Between the inner folded lines 32 is a variable portion 34 where the distance from the cap body 11 varies.

[0042] As shown in FIG. 6, when the variable portion 34 is not bent by the inner folded line 32 and the outer folded line 33, it is positioned so as to be close to and along the flange portion 14 (first position). That is, the variable portion 34 is positioned without a gap with respect to the flange portion 14. Then, as shown in FIG. 7, when viewed from the rear surface direction, the distance variable portion 31 makes the outer folded line 33 a valley fold and the inner folded line 32 a mountain fold. As a result, the variable portion 34 moves in a direction away from the flange portion 14 and is positioned at a distance from the flange portion 14 (second position). That is, the collar portion 28 can be bent so that both end portions in the longitudinal direction approach each other. As a result, between the outer folded lines 33, it bends into a C shape. And in the region between the outer folded lines 33, an insertion space 35 inserted vertically is configured. The insertion space 35 functions as an air volume adjustment hole through which the wind from the fan unit 22 escapes. The fan unit 22 disposed on the seat body 21 is located close to the collar 2 when the variable portion 34 is in the first position, and is farther from the collar 2 than in the first position when in the second position.

[0043] The seat body 21 is attached to the flange portion 14 while engaging the attachment member 24 with each attachment hole 29. When the seat body 21 is attached to the flange portion 14 by the attachment member 24 with the upper long side 21a and the collar portion 28 extended, the variable portion 34 is held in the first position. Also, when it is attached to the flange portion 14 by the attachment member 24 with the inner folded line 32 and the outer folded line 33 bent, the variable portion 34 is held in the second position. Also, by adjusting the degree of bending of the inner folded line 32 and the outer folded line 33, the variable portion 34 can be positioned at a position between the first position and the second position. For example, when the variable portion 34 is in the second position, it deflects according to that position, and the position of the fan unit 22 can be separated from the collar 2.

[0044] <Description of the fan unit> As shown in FIGS. 2 and 3, the fan unit 22 as a whole has an oblate shape and is formed by butting and joining a first half body 22a and a second half body 22b. The first half body 22a has a bowl shape, and a fan, a motor for rotating the fan, etc. are arranged therein. The second half body 22b is a cover that is butted and joined to the first half body 22a by screw action or the like, and has a flat dish shape. The first half body 22a serves as the air blowing surface. Here, in the present embodiment, the fan unit 22 is arranged such that the swollen first half body 22a faces the inner space 25a and the second half body 22b faces the outer space 25b. As an example, the fan unit 22 is driven such that the first half body 22a side is the air blowing side and the second half body 22b side is the intake side. The flat dish-shaped second half body 22b on the intake side faces the outer space 25b, so that the unevenness of the outer surface 21x can be suppressed, and as a result, the appearance can be improved. The exhaust-side first half body 22a having a bowl shape is located in the inner space 25a, so that the inner space 25a is effectively utilized. The swollen first half body 22a presses the seat body 21, particularly the wind diffusion portion 26, in the direction of the neck 2. Thereby, the openings of the plurality of air holes 27 are greatly widened so that the ventilation path becomes larger.

[0045] The fan unit 22 is connected to a battery such as a secondary battery through a power cord. The battery is stored in the pocket, bag, etc. of the wearer. Also, the battery may be arranged inside the helmet 10.

[0046] The fan unit 22 is attached to the seat body 21 via a support sheet 23 provided with a through hole 36 for attaching the fan unit 22. The fan unit 22 is attached to the support sheet 23 by sandwiching the peripheral edge portion 36a of the through hole 36 between the outer peripheral ends of the first half body 22a and the second half body 22b that are butted against each other.

[0047] <Description of the support sheet> As shown in FIGS. 2 and 3, the support sheet 23 has a trapezoidal shape with the upper base formed longer than the lower base. The support sheet 23 has the fan unit 22 attached thereto. The support sheet 23 is larger than the fan unit 22 and smaller than the sheet body 21. Further, the support sheet 23 is provided in a size to cover the upper air holes 27a, the lower air holes 27b, the right air holes 27c, and the left air holes 27d. A through hole 36 for attaching the fan unit 22 is provided at the center of the support sheet 23. The through hole 36 is an arrangement hole in which the fan unit 22 is arranged. The through hole 36 is a perfect circle having a diameter slightly smaller than the outer diameter of the fan unit 22. The peripheral portion 36a of the through hole 36 is a region sandwiched between the outer peripheral ends of the first half body 22a and the outer peripheral ends of the second half body 22b when the fan unit 22 is attached.

[0048] The positions along each side of the support sheet 23 are attachment portions 37 for attaching to the sheet body 21. That is, the attachment portions 37 are configured to surround the upper air holes 27a, the lower air holes 27b, the right air holes 27c, and the left air holes 27d. Each attachment portion 37 is joined to the sheet body 21 by an adhesive, welding, or the like. The opposing position of the sheet body 21 facing the attachment portion 37 is the to-be-attached portion 38.

[0049] The support sheet 23 configured as described above joins and integrates the attachment portion 37 and the to-be-attached portion 38. Note that the joining locations (attachment portion 37 and to-be-attached portion 38) of the support sheet 23 with respect to the sheet body 21 may be continuous without a gap or may have a gap.

[0050] The sheet body, which is the sheet main body 21 to which the support sheet 23 is joined, has the fan unit 22 attached to the support sheet 23. The fan unit 22 is attached by sandwiching the peripheral edge portion 36a of the through hole 36 between the outer peripheral end of the first half body 22a and the outer peripheral end of the second half body 22b to join the first half body 22a and the second half body 22b. Also, the fan unit is attached with the first half body 22a on the air blowing side facing the inner surface 21y side and the second half body 22b facing the outer surface 21x side. Thereafter, the sheet body to which the fan unit 22 is attached is attached to the flange portion 14 of the cap body 11 by the attachment member 24.

[0051] Such a support sheet 23 can support the fan unit 22 and prevent the air sent out from the fan unit 22 from being blown back to the side opposite to the air blowing direction. Therefore, the air blowing from the fan unit 22 can be sent out into the inner space 25a from the plurality of air holes 27 without waste.

[0052] <Description of the attachment member> As shown in FIG. 8, the attachment member 24 is a clip for detachably attaching the sheet main body 21 to the flange portion 14 of the cap body 11. The attachment member 24 includes a first member 41 inserted through the attachment hole 29 of the sheet main body 21 and a second member 42 for jointly attaching the first member 41 to the flange portion 14.

[0053] The first member 41 has a U shape, and one end portion 41a has the second member 42 rotatably attached thereto. The other end is the insertion end for the attachment hole 29. The second member 42 is rotated and press-fitted in a direction to close the opening between one end and the other end. The second member 42 includes a rotation fulcrum portion 42a with respect to the one end portion 41a of the first member 41. Also, the second member 42 includes a press-contact portion 42b that is press-contacted with the surface of the cap body 11 near the flange portion 14.

[0054] The attachment member 24 attaches the seat body 21 as follows. Specifically, the first member 41 is hooked on the attachment hole 29 of the seat body 21. Next, the second member 42 is arranged such that the pressure contact portion 42b is on the surface of the cap body 11 near the flange portion 14. The wearer can adjust the position of the variable portion 34 between the first position and the second position. Then, when the position of the seat body 21 relative to the flange portion 14 is determined, the first member 41 is rotated so that the lower end of the cap body 11 is inserted between one end portion 41a and the other end portion. That is, the flange portion 14 is inserted between the one end portion 41a and the other end portion. The one end portion 41a is located inside the cap body 11. Thereby, the attachment member 24 is in a locked state.

[0055] By the way, the attachment member 24 is in an unlocked state until the first member 41 is rotated and the pressure contact portion 42b is pressure contacted, and is movable along the flange portion 14. Thereby, the wearer can adjust the position of the variable portion 34 between the first position and the second position.

[0056] The seat body 21 can be easily removed from the flange portion 14. In this case, the attachment member 24 is unlocked by rotating the first member 41 in the opposite direction. Thereafter, the attachment member 24 can be removed from the flange portion 14. Also, when the attachment member 24 is in the unlocked state, the position of the variable portion 34 can be varied by moving the collar portion 28 along the flange portion 14.

[0057] <Explanation of the operation - usage method of the present embodiment-> The operation of the present embodiment will be described. When the seat body 21 is attached to the flange portion 14 of the helmet 10, the helmet 10 is worn on the head. Then, the seat body 21 covers the wearer's neck muscles 2. Therefore, the seat body 21 functions as a sunshade and a wind shield. Further, the fan unit 22 is also positioned to face the neck muscles 2. The wind diffusion portion 26 of the support seat 23 is pushed by the inflated first half body 22a of the fan unit 22, and the air blowing surface approaches the neck muscles 2. Then, in the plurality of air holes 27, the ventilation paths of the respective air holes 27 are enlarged due to the positions of the wind diffusion portion 26 and the connecting portion 30 being bent in the front - rear direction.

[0058] When the motor is driven, the fan unit 22 sucks air from the outside and blows it against the wind diffuser 26. Then, as shown in FIGS. 3 and 9, the wind diffuser 26 diffuses the wind in all directions.

[0059] The upward wind W1 blows out from the upper wind hole 27a and blows into the gap between the inside of the helmet 10 and the head. Then, the blown wind W1 flows from the rear surface to the front surface of the helmet 10. The downward wind W2 blows out from the lower wind hole 27b and flows in the direction of the upper body of the wearer. Since the downward flowing wind W2 flows inside the seat body 21, it can be suppressed from diffusing outward. The rightward wind W3 blows out from the right wind hole 27c and flows around the wearer's neck. The leftward wind W4 blows out from the left wind hole 27d and flows around the wearer's neck.

[0060] By the way, there may be a case where the position of the fan unit 22 with respect to the neck muscle 2 is not optimal for the wearer. For example, depending on the build of the wearer, etc., when the variable part 34 is in the first position, the fan unit 22 may hit the neck muscle 2 too much, and the wearing comfort may deteriorate. In such a case, the first member 41 is rotated to loosen the pressing state in which the pressing part 42b of the attachment member 24 presses the outer surface of the cap body 11 to an unlocked state. As a result, the collar part 28 can move the both ends in the longitudinal direction closer to each other and bend at the portions of the inner folding line 32 and the outer folding line 33.

[0061] When the variable part 34 is in an extended state without being bent by the inner folding line 32 and the outer folding line 33, it is positioned so as to be close to and along the flange portion 14 (first position). Therefore, the fan unit 22 relatively approaches the nape 2. Also, when viewed from the rear surface direction, the variable part 34 is separated from the flange portion 14 by making the outer folding line 33 a valley fold and the inner folding line 32 a mountain fold (second position). As a result, the vicinity of the variable part 34 of the seat body 21 moves away from the nape 2, and accordingly, the fan unit 22 also relatively moves away from the nape 2. Thereby, the position of the fan unit 22 attached to the seat body 21 can also be adjusted. When the variable part 34 is in the second position, an insertion space 35 is provided. A part of the air diffused by the air diffusion part 26 flows out from the insertion space 35, thereby adjusting the air volume. The insertion space 35 also functions as one of the air holes. When the fan unit 22 is operated in the rear surface direction, by moving the fan unit 22 away from the nape 2, it becomes less likely to hit the nape 2. As a result, the wearing comfort of the helmet is improved.

[0062] When the fan unit 22 is not attached, another sheet without the through hole 36 of the support sheet 23 can be attached so as to block the air hole 27. Thereby, even when the fan unit 22 is not attached, the seat body 21 can hide the air hole 27 and suppress the deterioration of the appearance. Also, the reduction in the functions as a sunshade and a windbreaker can be suppressed. Note that the seat body 21 may be attached to the flange portion 14 without attaching the support sheet 23. In this case, the through hole 36 will function as a ventilation hole.

[0063] In addition, the support sheet 23 may have accessory parts other than the fan unit 22 attached thereto. For example, accessory parts such as heaters, Peltier elements, and hand warmers, which are heating and cooling devices, may be attached to the support sheet 23. In such a case, the support sheet 23 has the accessory attached thereto detachably or fixedly according to the type of the accessory. And such a support sheet 23 is to be attached to the seat body 21 by being exchanged with the support sheet 23 to which the fan unit 22 is attached. For example, the heating device attached to the support sheet 23 is radiated in the direction of the nape 2 through the air holes 27.

[0064] <Effects of the First Embodiment> The effects of the first embodiment will be described. (1-1) The support sheet 23 to which the fan unit 22, which is an accessory part, is attached can be exchanged with respect to the seat body 21 attached to the helmet 10. The seat body 21 is a sheet attached to the helmet for uses such as sunshade and wind protection. The accessory may be a heating and cooling device other than the fan unit 22. Therefore, by exchanging the support sheet 23, the helmet 10 can add functions of the fan unit 22 and functions other than the fan unit 22 in addition to functions such as sunshade and wind protection.

[0065] (1-2) The fan unit 22 can be attached to the seat body 21. For example, the fan unit 22 is driven to blow air toward the wearer side. By driving the fan unit 22 in this way, for example, outside air can be sent into the space between the head and the inner surface of the helmet 10.

[0066] Specifically, the upward wind W1 from the upper air vent 27a is sent into the helmet 10. The downward wind W2 from the lower air vent 27b is sent in the direction of the wearer's upper body. The rightward wind W3 from the right air vent 27c is sent from the right side around the wearer's neck. The leftward wind W4 from the left air vent 27d is sent from the left side around the wearer's neck. In this way, the accessory attachment device 20 can blow air not only upward but also downward and in the left and right directions, so the wearing comfort of the helmet 10 can be improved.

[0067] (1-3) The fan unit 22 can be easily attached to the support sheet 23 by butt-joining and coupling the first half 22a and the second half 22b that are butt-joined while sandwiching the peripheral edge 36a of the through-hole 36 of the support sheet 23.

[0068] (1-4) The through-hole 36 is a circular hole corresponding to the size of the fan unit 22. Therefore, the support sheet 23 can support the fan unit 22 around the entire circumference of the peripheral edge 36a of the through-hole 36. Thereby, the fan unit 22 is firmly attached to the support sheet 23.

[0069] (1-5) The seat body 21 is detachably attached to the flange portion 14 by the attachment member 24 in the region from both side surfaces to the back surface. According to such a configuration, the seat body 21 can be attached to a position that does not obstruct the wearer's view and functions as a sunshade or windbreak. And the wind can be sent out in all directions from the rear direction of the helmet 10.

[0070] (1-6) The flange portion 14 of the helmet 10 is provided with a flange portion 14 that extends to the outside of the helmet 10 in the region from both side surfaces to the back surface. The attachment member 24 can easily attach the seat body 21 by effectively using the flange portion 14 provided on many helmets 10.

[0071] (1-7) The attachment member 24 is a clip. Therefore, the seat body 21 can be easily attached to and detached from the flange portion 14. Also, the attachment position of the seat body 21 with respect to the flange portion 14 can be easily adjusted.

[0072] (1-8) The seat body 21 and the support seat 23 are made of a fabric in which a cloth is sandwiched between soft synthetic resins. Therefore, the seat body 21 and the support seat 23 can suppress the occurrence of unraveling at the cut ends while having flexibility. Since the cut ends of the seat body 21 and the support seat 23 are difficult to unravel, they can be easily formed by punching.

[0073] (1-9) A collar portion 28 is disposed at a position along the upper long side 21a which is the attachment edge portion of the seat body 21. The collar portion 28 has a resilience greater than that of the seat body 21. Such a collar portion 28 reinforces the upper long side 21a of the seat body 21. As a result, the seat body 21 can be firmly attached to the flange portion 14.

[0074] <Second Embodiment> As shown in FIGS. 10 and 11, an annular support ring portion 46 having a resilience higher than that of the support seat 23 may be disposed at the peripheral edge portion 36a of the through hole 36. The first half body 22a and the second half body 22b constituting the fan unit 22 are butted and joined in a state where the peripheral edge portion 36a of the through hole 36 is sandwiched together with the support ring portion 46. Here, the support ring portion 46 is a reinforcing plate and is an annular plate body. The support ring portion 46 is, for example, a synthetic resin plate having a resilience higher than that of the seat body 21. For example, the support ring portion 46 is provided by punching the same plate material as the collar portion 28. The support ring portion 46 is disposed at the peripheral edge portion 36a of the through hole 36 in the support seat 23. The surface of the support seat 23 where the support ring portion 46 is disposed is preferably provided on the inner surface which is the surface facing the seat body 21 rather than the outer surface. In this way, the support ring portion 46 can be hidden.

[0075] Next, the effects of the second embodiment will be described. (2-1) The support ring portion 46 has a repulsive force greater than that of the support sheet 23, enabling the fan unit 22 to be stably attached to the support sheet 23. Also, at the butting joint portion between the first half body 22a and the second half body 22b of the fan unit 22, it is possible to prevent the peripheral edge portion 36a from being pinched in a wrinkled state.

[0076] <Third Embodiment> As shown in FIGS. 12 and 13, in the third embodiment, the color portion 28 and the support ring portion 46 of the second embodiment are formed as a single component, serving as the support member 47. That is, the support member 47 is a support member 47 including the support ring portion 46 and the connecting piece 48. The support ring portion 46 is the same as the support ring portion 46 of the second embodiment. The connecting piece 48 is a linear piece extending outward from the support ring portion 46. The support member 47 is provided by punching out the same plate material as the color portion 28.

[0077] The tip of the connecting piece 48 is attached to the variable portion 34 of the color portion 28 by an attachment pin 49 as an attachment member such as a pin. In this embodiment, the connecting piece 48 is attached so as to be rotatable in the left - right direction with respect to the variable portion 34 by passing through the vicinity region of the upper long side 21a by the attachment pin 49. By rotating the connecting piece 48 around the attachment pin 49, fine adjustment of the position of the fan unit 22 is possible. Note that the attachment pin 49 may be fixed so that the connecting piece 48 does not rotate with respect to the variable portion 34.

[0078] Next, the effects of the third embodiment will be described. (3-1) The support member 47 is connected by the color portion 28 and the connecting piece 48. Thereby, the posture of the fan unit 22, which is a heavy object, can be made more stable than when it is supported only by the flexible support sheet 23.

[0079] (3-2) The color part 28 and the support ring part 46 integrated with the fan unit 22 are connected via a connecting piece 48 and are integral. The support member 47 is, like the color part 28, a plate material with a higher resilience than the support sheet 23. Therefore, even when the variable part 34 in the color part 28 moves to the second position, the fan unit 22 can be separated from the neck muscle 2 accordingly. That is, when the support ring part 46 and the variable part 34 are not connected through the connecting piece 48, the fan unit 22 can be separated from the neck muscle 2 by moving the variable part 34 to the second position. However, due to the weight of the fan unit 22, the seat body 21 and the support sheet 23 tend to bend in the direction of the neck muscle 2, and the amount of separation from the neck muscle 2 tends to be small.

[0080] In this regard, the fan unit 22 is connected to the color part 28 by a support member 47 with a higher resilience than the seat body 21 and the support sheet 23. Therefore, it is possible to make it difficult for the fan unit 22 to approach the neck muscle 2 due to the weight of the fan unit 22. In the third embodiment, in the second position, compared with the case where the fan unit 22 and the variable part 34, which is a part of the color part 28, are not connected to the connecting piece 48 as in the first embodiment and the second embodiment, the fan unit 22 can be separated from the neck muscle 2 more by utilizing the resilience of the connecting piece 48.

[0081] <Fourth Embodiment> The fourth embodiment is a modified example of the support member 47 in the third embodiment. Inside the support ring part, the fan unit 22 can move between an upper position and a lower position. As shown in FIGS. 14 and 15, the support member 51 includes a support ring part 52 and a connecting piece 53. The support ring part 52 has an elongated hole shape with the vertical direction as the major axis. And in the middle of the vertical direction, it is provided with a constricted part 54. And the support ring part 52 is configured with an upper support part 52a on the upper side and a lower support part 52b on the lower side with the constricted part 54 as the boundary.

[0082] In this case, the shape of the through hole 36 in the support sheet 23 is a long hole shape corresponding to the support ring portion 52. In the present embodiment, the through hole 36 does not provide a portion corresponding to the constricted portion 54 of the support ring portion 52, but such a portion may be provided.

[0083] As shown in FIG. 14, when positioning the fan unit 22 at the upper position held by the upper support portion 52a, the upper support portion 52a is sandwiched between the first half body 22a and the second half body 22b constituting the fan unit 22. The region sandwiched between the first half body 22a and the second half body 22b is the circular portion of the upper support portion 52a and the constricted portion located below the upper support portion 52a.

[0084] As shown in FIG. 15, when positioning the fan unit 22 at the lower position held by the lower support portion 52b, the lower support portion 52b is sandwiched between the first half body 22a and the second half body 22b constituting the fan unit 22. The region sandwiched between the first half body 22a and the second half body 22b is the circular portion of the lower support portion 52b and the constricted portion located above the lower support portion 52b.

[0085] Note that the support ring portion 52 may be provided with, for example, two constricted portions 54 in the vertical direction instead of one. In this case, three support portions, namely an upper support portion, a middle support portion, and a lower support portion, will be provided to support the fan unit 22. Thus, if the number of constricted portions 54 provided in the support ring portion 52 in the vertical direction is increased, the number of support portions for supporting the fan unit 22 can be increased.

[0086] Next, the effects of the fourth embodiment will be described. (4-1) The position of the fan unit 22 can be adjusted at two positions, an upper position and a lower position. Thereby, according to the size of the wearer's head circumference, preferences, etc., the vertical position of the fan unit 22 can be adjusted at two positions, and the wearing comfort can be improved.

[0087] In the upper position of (4-2), since the fan unit 22 is also supported by the constricted portion below the upper support portion 52a, it is less likely to shift in the direction of the lower support portion 52b due to the weight of the fan unit 22. Also, in the lower position, since the fan unit 22 is also supported by the constricted portion above the lower support portion 52b, it is less likely to shift in the direction of the upper support portion 52a.

[0088] <Fifth Embodiment> The fifth embodiment is a modified example of the support ring portion in the fourth embodiment and does not include the constricted portion 54. That is, the support ring portion 56 has an elongated hole shape with the vertical direction of the support ring portion 52 as the major axis. The support ring portion 56 is provided with arc portions above and below, and the side edges extending vertically are composed of straight lines.

[0089] In this case, the shape of the through hole 36 of the support sheet 23 is an elongated hole shape corresponding to the support ring portion 56. In the present embodiment, the through hole 36 does not have a portion corresponding to the constricted portion 54 of the support ring portion 52.

[0090] As shown in FIG. 16, the fan unit 22 sandwiches the support ring portion 56 between the first half body 22a and the second half body 22b that constitute the fan unit 22. The region sandwiched between the first half body 22a and the second half body 22b becomes the upper and lower circular portions and the left and right straight portions when in the upper limit position or the lower limit position. Also, at the intermediate position between the upper limit position and the lower limit position, only the left and right straight portions are present.

[0091] Next, the effects of the fifth embodiment will be described. (5-1) Since such a support ring portion 56 does not have a constricted portion, the position of the fan unit 22, such as an intermediate position, can be freely adjusted in the vertical direction, not limited to only two positions, the upper position and the lower position.

[0092] <Modified Example> Note that the first embodiment to the fifth embodiment can be implemented with the following modifications. The first embodiment to the fifth embodiment and the following modified examples can be implemented in combination with each other within a technically non - conflicting range.

[0093] · In the sheet body 21, the color portion 28 may be omitted. When the color portion 28 is omitted, the attachment member 24 may be hooked and attached to the attachment hole 29 provided in the region along the upper long side 21a of the sheet body 21.

[0094] · The sheet body 21 and / or the support sheet 23 are not limited to a fabric in which a woven fabric is sandwiched between soft synthetic resins. The sheet body 21 may be an ordinary cotton woven fabric, a silk woven fabric, etc. Further, the sheet body 21 may be a mesh sheet. Furthermore, it may be a resin sheet. The sheet body 21 and / or the support sheet 23 may be more flexible than the fabrics used in the first to fifth embodiments, or may be less flexible. Also, the sheet body 21 and / or the support sheet 23 may have air permeability more than the fabrics used in the first to fifth embodiments, or may not have air permeability.

[0095] · The attachment of the support sheet 23 to the sheet body 21 may be detachable in addition to welding and adhesion. As a detachable configuration of the support sheet 23 to the sheet body 21, a hook-and-loop fastener may be used. In this case, a male hook-and-loop fastener may be arranged on one of the opposing surfaces of the opposing support sheet 23 and the sheet body 21, and a female hook-and-loop fastener may be arranged on the other. Also, a male hook button may be provided on either one of the sheet body 21 and the support sheet 23, and a female hook button may be provided on the other, and they may be engaged and attached. Also, a configuration may be adopted in which a part such as one side of the support sheet 23 is sewn to the sheet body 21, and the remaining parts such as the other sides are attached with a hook-and-loop fastener, a hook button, etc.

[0096] In the fourth and fifth embodiments, within the support ring portion, the fan unit 22 can move between an upper position and a lower position. For example, if the support sheet 23 is detachable from the sheet body 21, the through hole 36 of the support sheet 23 may be a perfect circle with a diameter slightly smaller than the outer diameter of the fan unit 22. Then, in the fourth embodiment, the vertical position of the support sheet 23 may be adjusted to attach the fan unit 22 to either the lower support portion 52b of the support ring portion 52 or a position of the lower support portion 52b. Also, in the fifth embodiment, the vertical position of the support sheet 23 may be adjusted to attach it to any position of the long hole-shaped through hole 36 of the support ring portion 56. Further, in the first and second embodiments, simply making the support sheet 23 detachable from the sheet body 21 and allowing the support sheet 23 to be shifted vertically to enable adjustment of the vertical position may also be possible.

[0097] · The attachment member 24 is not limited to a clip. For example, a male hook button may be provided on either the helmet 10 or the sheet body 21, and a female hook button may be provided on the other, and they may be engaged and attached. Also, a male surface fastener may be provided on either the helmet 10 or the sheet body 21, and a female surface fastener may be provided on the other, and they may be engaged and attached. Further, a hook-shaped hook may be provided on either the helmet 10 or the sheet body 21, and an engagement hole for hanging the hook may be provided on the other.

[0098] · The helmet 10 may not have a flange portion 14. In this case, the sheet body 21 will be attached via the attachment member 24 to the edge along the open end 11a. · Regardless of whether the cap body 11 has a flange portion 14, for example, the sheet body 21 may be configured to be attached to the legs of a hammock disposed on the inner surface of the cap body 11. That is, the position where the sheet body 21 is attached to the helmet 10 is not particularly limited.

[0099] ·In the flange portion 14 of the cap body 11, the region where the sheet body 21 is attached may be not only the entire region from both side surfaces to the back surface, but also provided only on the side surface or only on the back surface according to the usage environment.

[0100] ·The fan unit 22 is not limited to a configuration that can be divided into a first half body 22a and a second half body 22b. The fan unit 22 may not be divided into the first half body 22a and the second half body 22b. In the case of a fan unit having such a configuration, the fan unit 22 may be attached by engaging it with an engaging member such as a hook-shaped hook provided on the support sheet 23.

[0101] ·As a whole, the fan unit 22 may have a substantially rectangular parallelepiped shape. In this case, the through hole 36 to which the fan unit 22 is attached also has a rectangular shape that matches the shape of the fan unit 22.

[0102] ·The fan unit 22 may be integrated with the support sheet 23 by adhesion, welding, etc. In this case, the fan unit 22 is not replaceable with respect to the support sheet 23. When the fan unit 22 fails or the like, the entire support sheet 23 will be replaced.

[0103] ·The arrangement of the upper air hole 27a, the lower air hole 27b, the right air hole 27c, and the left air hole 27d does not have to be a line-symmetric arrangement. ·The air hole 27 only needs to include the upper air hole 27a and at least one other air hole. That is, the air hole 27 may have a configuration including only the upper air hole 27a and the lower air hole 27b, or a configuration including only the upper air hole 27a, the right air hole 27c, and the left air hole 27d. Also, the air hole 27 may have a configuration including the upper air hole 27a and any one of the right air hole 27c and the left air hole 27d. Furthermore, the air hole 27 may be the upper air hole 27a and an air hole provided at a position other than the lower air hole 27b, the right air hole 27c, and the left air hole 27d.

[0104] ·The shape of the upper air holes 27a is not limited to a linear slit extending in the left-right direction. For example, the upper air holes 27a may have a wavy shape, may be a long hole with the left-right direction as the major axis, or may be formed by arranging small holes such as circular holes and triangular holes in the left-right direction.

[0105] ·The shape of the lower air holes 27b is not limited to a shape that is wider in the left-right direction on the lower side than on the upper side. For example, the shape of the lower air holes 27b may be wider in the left-right direction on the upper side than on the lower side. Also, the lower air holes 27b may be a linear slit extending in the left-right direction, may be a long hole with the left-right direction or the up-down direction as the major axis, or may be formed by one or more rows of arranging small holes such as circular holes and triangular holes in the left-right direction. Further, the lower air holes 27b may be formed by arranging a plurality of small holes in a matrix.

[0106] ·The right air holes 27c and the left air holes 27d are not limited to a right triangle shape. For example, the right air holes 27c and the left air holes 27d may be isosceles triangle holes or triangle holes with different lengths for all sides. Also, the right air holes 27c and the left air holes 27d may be holes with a polygonal shape such as a quadrilateral, pentagon, hexagon, etc., or may be holes with a circular shape, semi-circular shape, etc. Further, the right air holes 27c and the left air holes 27d may be configured such that slits arranged in the up-down direction or the left-right direction are arranged. Further, the right air holes 27c and the left air holes 27d may be formed by one or more rows of arranging small holes in the left-right direction. The right air holes 27c and the left air holes 27d may have different shapes and sizes.

[0107] ·In the sheet body 21, a plurality of air holes 27 may be omitted. In this case, the entire sheet body 21 becomes the air diffusion portion 26. In such a case, the support sheet 23 that supports the fan unit 22 is joined to the attached portion 38 of the sheet body 21 using the left-right direction attachment portion 37. And the upper and lower portions of the support sheet 23 are in an open state.

[0108] According to such a configuration, when the fan unit 22 is driven, the diffused wind forms a ventilation path that blows out in the vertical direction with the upper and lower ends of the support sheet 23 serving as air holes. Also, by simply joining each corner portion of the support sheet 23 to the sheet body 21, ventilation can be configured in all directions, i.e., vertically, horizontally, and laterally. Further, in the support sheet 23, the attachment portions 37 along each side may be intermittently joined to the attached portion 38. In such a case, the unjoined positions become air holes. At least, the support sheet 23 may be joined to the sheet body 21 such that the ventilation path is configured not only upward but also downward or in the left - right direction.

[0109] · In the support sheet 23, it is not necessary for the entire sheet to have the same flexibility. For example, the wind diffusion portion 26 and the connecting portion 30 may be made of a sheet that is more flexible than the peripheral portion 36a.

[0110] · In the distance variable portion 31, the pair of inner fold lines 32 and the pair of outer fold lines 33 may be omitted. This is because if the collar portion 28 can be bent, it can bend the sheet body 21 in the rear direction. Also, the position where the collar portion 28 is bent may be offset not only in the rear direction but also in any direction on either the left or right side surface.

[0111] · Small elements such as Peltier elements may be attached to the support sheet 23 in addition to the fan unit 22. That is, a plurality of accessories may be attached to one support sheet 23.

Explanation of Reference Numerals

[0112] 2… Neck muscle 10… Helmet 11… Cap body 11a… Open end 14… Flange portion 20… Accessory mounting device 21… Sheet body 22… Fan unit 22a… First half body 22b… Second half body 23… Support sheet 24…Mounting member 25a…Inner space 25b…Outer space 26…Wind diffusion part 27a…Upper air hole 27b…Lower air hole 27c…Right air hole 27d…Left air hole 28…Color part 29a…Central mounting hole 29b…Outer mounting hole 30…Connecting part 31…Distance variable part 32…Inner broken line 33…Outer broken line 34…Variable part 35…Insertion space 36…Through hole 36a…Peripheral part 37…Mounting part 38…Part to be mounted 41…First member 42…Second member 42a…Pressing part 46…Support ring part

Claims

1. In an accessory mounting device for mounting an accessory to a helmet, a flexible seat body attached to the helmet; a support seat to which the accessory is attached and which is attached to the seat body, an accessory mounting device.

2. The accessory is a fan unit, the support seat has a through hole, and is attached to the outer surface of the seat body such that the fan unit is positioned in the through hole The accessory mounting device according to claim 1.

3. The fan unit includes a first half body and a second half body that are butt-joined, the first half body and the second half body are butt-joined while sandwiching the peripheral edge of the through hole, thereby constituting the fan unit and being attached to the support seat The accessory mounting device according to claim 2.

4. An annular support ring portion having a higher repulsive force than the support seat is disposed at the peripheral edge of the through hole, the first half body and the second half body are butt-joined while sandwiching the peripheral edge of the through hole together with the support ring portion The accessory mounting device according to claim 3.

5. The through hole is a circular hole corresponding to the size of the fan unit The accessory mounting device according to claim 3.

6. The through hole is a vertically long hole, and the fan unit can be mounted at a plurality of positions in the vertical direction in the through hole The accessory mounting device according to claim 3.

7. The through hole is a vertically long hole, An annular support ring portion having a resilience higher than that of the support sheet is disposed at the peripheral edge of the through hole. The first half body and the second half body are butted and joined in a state where the peripheral edge of the through hole is sandwiched together with the support ring portion. The support ring portion includes an upper support portion for supporting the fan unit in an upper position and a lower support portion for supporting the fan unit in a lower position. The accessory mounting device according to claim 3.

8. The seat body is an edge portion of the helmet and is detachably attached by an attachment member to a region extending from both side surfaces to the back surface. The accessory mounting device according to claim 1.

9. The edge portion of the helmet includes a flange portion that extends to the outside of the helmet in a region extending from both side surfaces to the rear surface. The seat body is detachably attached by the attachment member to the flange portion. The accessory mounting device according to claim 8.

10. The attachment member is a clip. The accessory mounting device according to claim 8 or 9.

11. The seat body and the support sheet are made of a fabric in which a cloth is sandwiched between soft synthetic resins. The accessory mounting device according to claim 1.

12. The seat body includes a collar portion disposed at an attachment edge portion to the helmet. The collar portion has a resilience higher than that of the seat body. The accessory mounting device according to claim 1.

13. A support member having a resilience higher than that of the support sheet is disposed on the outer surface of the seat body on the side opposite to the wearer. The support member includes a support ring portion disposed at the periphery of a through hole where the fan unit is located, and a connecting portion connected to the collar portion. The accessory mounting device according to claim 12.

14. A helmet, and an accessory mounting device for mounting an accessory to the helmet. The accessory mounting device includes a flexible seat body attached to the helmet, and a support seat to which the accessory is attached and which is attached to the seat body. A helmet device.

Images