Hat

The hat design addresses the issues of water tank dependency and low air permeability by using a cotton and perforated aluminum foil structure for continuous cooling and improved breathability.

JP3252048UActive Publication Date: 2025-07-17SHIGEMATSU
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Patent Information

Application Number
JP2025001635U
Authority / Receiving Office
JP · JP
Patent Type
Utility models
Current Assignee / Owner
Filing Date
2025-05-22
Publication Date
2025-07-17
Estimated Expiration
2035-05-22

AI Technical Summary

Technical Problem

Conventional hats with cooling mechanisms require a water supply tank and suffer from insufficient air permeability, with the cooling effect ceasing when water evaporates.

Method used

A hat design featuring a crown portion with a main body fabric, cotton inside the fabric, and an aluminum foil on the inner surface with holes, allowing moisture evaporation to cool the foil and enhance ventilation.

Benefits of technology

The hat provides continuous cooling sensation without a water supply tank and ensures high air permeability by utilizing moisture evaporation and ventilation through the foil's holes.

✦ Generated by Eureka AI based on patent content.

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Abstract

Provided is a hat that does not require a water supply tank and continuously gives a cooling sensation to the wearer, and has higher air permeability. 【Solution means】The hat 10 has a crown portion 11. The crown portion 11 includes a main body fabric 20 that forms the outer surface of the crown portion 11, cotton 40 disposed inside at least a part of the main body fabric 20, and an aluminum foil 50 disposed on the inner surface of the cotton 40 and in contact with the cotton 40. The aluminum foil 50 is provided with a plurality of holes 51 or forms a vent 35.
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Description

Technical Field

[0001] This invention relates to a hat.

Background Art

[0002] Conventionally, a convenient hat that gives a cooling sensation to the wearer has been proposed (see, for example, Patent Document 1). Patent Document 1 discloses a hat provided with a cooling mechanism that supplies water from a water supply unit to a water supply tank and cools the forehead in contact with a block or plate made of a heat-conductive material by vaporization heat conduction.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the hat according to Patent Document 1 has a problem that the structure is complicated because it is provided with a water supply tank. In addition, when all the water previously supplied to the water supply tank evaporates, the cooling effect cannot be exerted during wearing. Furthermore, there is also a problem that the air permeability is not sufficient in the type of hat using aluminum foil.

[0005] Therefore, an object of the present invention is to provide a hat that does not require a water supply tank, continues to give a cooling sensation to the wearer, and has higher air permeability.

Means for Solving the Problems

[0006] In order to achieve the above object, one form of the hat according to the present invention is a hat having a crown portion, wherein the crown portion includes a main body fabric constituting the outer surface of the crown portion, cotton disposed inside at least a part of the main body fabric, and an aluminum foil disposed on the inner surface of the cotton and in contact with the cotton, the aluminum foil having a plurality of holes or forming a vent, and the hat is provided with the aluminum foil.

Advantages of the Invention

[0007] According to the present invention, a hat with higher air permeability that does not require a water supply tank and continuously gives a cool feeling to the wearer can be realized.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Modes for Carrying Out the Invention

[0009] Hereinafter, embodiments of the hat according to the present invention will be described in detail with reference to the drawings. Note that all of the embodiments described below show preferred specific examples of the present invention. The numerical values, components, arrangement positions of components, connection forms, etc. shown in the following embodiments are merely examples and are not intended to limit the present invention. In addition, among the components in the following embodiments, the components not described in the independent claims are described as optional components constituting a preferred form.

[0010] Note that each figure is a schematic diagram and is not necessarily drawn precisely. Also, in each figure, the same reference numerals are given to substantially the same configurations, and duplicate explanations may be omitted or simplified.

[0011] (Embodiment) [Configuration] FIG. 1 is a view showing the structure of a hat and the cooling structure of the hat according to the embodiment. More specifically, FIG. 1(a) is a perspective view showing the structure of the hat 10. FIG. 1(b) is a cross-sectional view showing the state where the structure of the hat 10 shown in FIG. 1(a) is cut by a plane perpendicular to the left-right direction, and a view showing the inside of the crown portion 11.

[0012] The hat 10 is a hat that does not require a water supply tank and continues to give a cool feeling to the wearer, and has higher breathability than conventional ones. It is composed of a crown portion 11 that covers the wearer's head and a brim portion 12 that protrudes outward from the crown portion 11.

[0013] The crown portion 11 is for covering the wearer's head and is hemispherical as shown in Fig. 1(a). The surface of the crown portion 11 is formed by sewing the main fabric 20 and the lining fabric 60 as shown in Fig. 1(b). Inside the crown portion 11, first, the front panel 30 is laid on the main fabric 20 which is the outer surface of the crown portion 11 along a location along the inner surface of the front part of the crown portion 11. Also, cotton 40 is laid on the inner surface of the front panel 30. Then, on the inner surface of the cotton 40, an aluminum foil 50 with holes 51 is laid on the cotton 40. Note that the combination of the cotton 40 and the aluminum foil 50 is called the cooling mechanism 45. Finally, on the inner surface of the aluminum foil 50, the lining fabric 60 is laid on the aluminum foil 50 as the inner surface of the crown portion 11. Here, the shape of the crown portion 11 is not limited.

[0014] The main fabric 20 is the fabric that constitutes the outer surfaces of the crown portion 11 and the brim portion 12 of the hat 10. The main fabric 20 is realized by cotton, wool, hemp, plant-based materials or chemical fibers such as polyester. The main fabric 20 may be, for example, felt fabric or knit fabric. Here, the material of the main fabric 20 is not limited. The main fabric 20 may be a single piece of cloth or may be constituted by a combination of multiple pieces of cloth.

[0015] The lining fabric 60 is the fabric that constitutes the inner surfaces of the crown portion 11 and the brim portion 12 of the hat 10. The lining fabric 60 is realized by cotton, wool, hemp, plant-based materials or chemical fibers such as polyester. The lining fabric 60 may be, for example, felt fabric or knit fabric. Here, the material of the lining fabric 60 is not limited. The lining fabric 60 may be a single piece of cloth, may be constituted by a combination of multiple pieces of cloth, or may be the same material as the main fabric 20.

[0016] The front panel 30 is for preventing the front part of the crown portion 11 from losing its shape by reinforcing the front part of the crown portion 11 from the inside. The front panel 30 may be formed of a mesh fabric woven from synthetic fibers.

[0017] The cotton 40 absorbs and retains the moisture supplied by the wearer and the sweat wiped by the wearer. Then, the retained moisture will eventually evaporate and generate the heat of vaporization. For the cotton 40, for example, Bell Oasis (registered trademark) with high water retention is used.

[0018] The aluminum foil 50 is cooled by the heat of vaporization transmitted from the cotton 40 due to the evaporation of the moisture in the cotton 40, and gives a cooling sensation to the wearer of the hat 10. The aluminum foil 50 is made by rolling aluminum thinly. For example, the aluminum foil 50 may have a thickness of 0.006 mm to 0.2 mm. Also, one side of the aluminum foil 50 may be coated. Also, the aluminum foil 50 may be laminated.

[0019] The aluminum foil 50 is provided with a plurality of holes 51. The holes 51 provided in the aluminum foil 50 are made to convey the ventilation from the outside of the hat 10 in the path that penetrates the layer structure of the main body fabric 20, the front piece 30, and the cotton 40 to the wearer of the hat 10. It is also a path for the sweat wiped by the wearer of the hat 10 on the head to penetrate into the cotton 40. The number of the holes 51 provided in the aluminum foil 50 is plural. The plurality of holes 51 provided in the aluminum foil 50 may be arranged at equal intervals or may be randomly arranged. The shape of the holes 51 provided in the aluminum foil 50 is, for example, circular. For example, circular holes 51 with a diameter of 5 mm may be arranged at intervals of 1 cm in the aluminum foil 50.

[0020] Also, in the cooling mechanism 45, on the inner surface of the cotton 40, the aluminum foil 50 with holes 51 is overlaid on the cotton 40. As a result, when the moisture contained in the cotton 40 evaporates, the aluminum foil 50 is cooled by the generated heat of vaporization, and the wearer of the hat 10 can obtain a cooling sensation. Also, since the ventilation from the outside of the hat 10 also passes through the main body fabric 20, the cotton 40, the holes 51 of the aluminum foil 50, and the lining fabric 60, high breathability can also be obtained.

[0021] The brim portion 12 serves as a part to prevent sunlight from entering the eyes of the wearer of the hat 10, and is a portion that protrudes peripherally from the hem of the crown portion 11 of the hat 10. That is, it is a portion called the brim of the hat 10. Here, the shape of the brim portion 12 is not limited.

[0022] [Manufacturing Method] Next, the manufacturing procedure of the hat 10 will be described. First, the main fabric 20 that constitutes the outer portion of the crown portion 11 is cut and prepared. Then, the lining fabric 60 that constitutes the back side portion of the crown portion 11 is cut and prepared. Note that these preparation steps may be in the reverse order.

[0023] Next, between the outer portion of the crown portion 11 and the back side portion of the crown portion 11, from the outside, in the order of the front piece 30, the cooling mechanism 45 composed of cotton 40 and an aluminum foil 50 provided with holes 51, which is cut into an appropriate shape, is sandwiched, and the outer portion of the crown portion 11 and the back side portion of the crown portion 11 are sewn together. Here, the front piece 30 is attached to the crown portion 11 by being sewn to the lower end of the crown portion 11.

[0024] Subsequently, the brim portion 12 is prepared.

[0025] Then, the brim portion 12 is sewn to the lower end of the crown portion 11. At this time, both the aluminum foil 50 and the cotton 40 inserted into the crown portion 11 may or may not be sewn together with the brim portion 12. Here, the hat 10 is completed.

[0026] [Function] The hat 10 according to the present embodiment manufactured by the above steps has breathability and gives a cool feeling to the wearer. Hereinafter, the details of the cool feeling given by the hat 10 and the breathability of the hat 10 will be described respectively.

[0027] The configuration of the cooling mechanism 45 of the hat 10 according to the embodiment of the present disclosure is shown in FIG. 1(b). Since the cotton 40 constituting the cooling mechanism 45 is a water-retaining material, it can contain a large amount of moisture. The heat of vaporization generated by the evaporation of the moisture is conducted to the aluminum foil 50, and the head of the wearer of the hat 10 is cooled by the heat conductivity of aluminum. Further, since a plurality of holes 51 are provided in the aluminum foil 50, the sweat wiped by the wearer on the head is also absorbed by the cotton 40 through the holes 51 of the lining 60 and the aluminum foil 50.

[0028] FIG. 2 is a graph plotting the temperature change of the aluminum foil 50 over 60 minutes when the cooling mechanism 45 with moisture in the cotton 40 and the cooling mechanism 45 without moisture in the cotton 40 are placed in an environment of 35°C. The white circles in FIG. 2 indicate the proposed examples, and the black circles indicate the comparative examples. The experimental conditions are as follows: Two cooling mechanisms 45 cut into 10 cm squares are prepared and dried in a dryer for 1 hour. Then, the two cooling mechanisms 45 are placed in a thermo-hygrostat with the environmental settings of 35°C and 40% RH to stabilize the cooling mechanism 45 in the experimental environment. Finally, among the two cooling mechanisms 45, ion-exchanged water with the same mass as the cooling mechanism 45 is added to one of the cotton 40 to make it in a 100% wet state. The two cooling mechanisms 45 are placed on the temperature sensor on the heat insulation plate installed in the tank such that the aluminum foil 50 contacts the temperature sensor, and the temperature change is measured every minute for 60 minutes. Note that the temperature result of the cooling mechanism 45 in a 100% wet state is taken as the proposed example, and the temperature result of the cooling mechanism 45 with no ion-exchanged water added at all is taken as the comparative example. As shown in FIG. 2, the experimental results show that the comparative example maintained around 35°C of the environmental temperature for 60 minutes, while in the proposed example, it dropped to around 27°C in 1 minute after the start of the experiment and then maintained around 26°C for 60 minutes. As can be seen from this experimental result, the aluminum foil 50 of the cooling mechanism 45 continues to be cooled by the evaporation of the moisture supplied to the cotton 40 of the cooling mechanism 45 and the generation of the heat of vaporization.

[0029] The ventilation state of the hat 10 according to the embodiment of the present disclosure is as shown in "Ventilation" in Fig. 1(b). That is, the aluminum foil 50 of the hat 10 has ventilation due to a plurality of holes 51 being provided. Specifically, the hat 10 can release the moisture trapped inside the hat 10 to the outside through the plurality of holes 51 provided in the aluminum foil 50. Therefore, the larger the total area occupied by the plurality of holes 51 provided in the aluminum foil 50 used, the higher the ventilation of the hat 10.

[0030] (Modification of the embodiment) The areas of the plurality of holes 51 provided in the aluminum foil 50 do not have to be uniform. For example, the total area occupied by the plurality of holes 51 provided in the region of the aluminum foil 50 corresponding to the front part of the crown part 11 per unit area of the aluminum foil 50 may be larger than the total area occupied by the plurality of holes 51 provided in the region corresponding to the region excluding the front part of the crown part 11. Also, the plurality of holes 51 provided in the aluminum foil 50 do not have to be arranged at equal intervals. For example, the plurality of holes 51 provided in the aluminum foil 50 may be arranged unevenly or randomly.

[0031] Fig. 3 is a perspective view of the hat 10a according to Modification 1 of the embodiment of the present disclosure. As shown in Fig. 3, in the hat 10a, the density, which is the number of holes 51 per unit area provided in the region corresponding to the front part of the crown part 11, is larger than the density, which is the number of holes 51 per unit area provided in the region corresponding to the region excluding the front part of the crown part 11. As a result, the total area occupied by the plurality of holes 51 provided in the region corresponding to the front part of the crown part 11 of the hat 10a becomes larger than the total area occupied by the plurality of holes 51 provided in the region corresponding to the region excluding the front part of the crown part 11 of the hat 10a. As a result, the ventilation at the front part of the crown part 11 of the hat 10a is improved.

[0032] FIG. 4 is a perspective view of a hat 10b according to Modification Example 2 of the embodiment of the present disclosure. As shown in FIG. 4, in the hat 10b, the area of each of a plurality of holes 51 provided in a region corresponding to the front part of the crown part 11 is larger than the area of each of the plurality of holes 51 provided in a region corresponding to a region excluding the front part of the crown part 11 of the hat 10b. As a result, the air permeability at the front part of the crown part 11 of the hat 10b is improved.

[0033] Note that the shape of the holes 51 provided in the aluminum foil 50 may be a polygon, an ellipse, a star shape, a heart shape, or the like. Here, the shape of the holes 51 is not limited. Also, there may be one hole 51 provided in the aluminum foil 50.

[0034] Also, here, the position of the front panel 30 may be sewn to the lower end of the crown part 11 between the cooling mechanism 45 and the lining 60, or inside the lining 60.

[0035] The aluminum foil 50 and the cotton 40 do not have to be provided in all parts of the crown part 11. For example, the aluminum foil 50 and the cotton 40 may be provided only in the front part of the crown part 11. Here, the location where the aluminum foil 50 is provided is not limited. The location where the cotton 40 is provided is also not particularly limited, similar to the aluminum foil 50.

[0036] (Other exemplary forms) FIG. 5 is a diagram showing various morphological examples of the hat 10 according to the embodiment of the present invention. In FIG. 5(a), a hat 10c called a hat, in FIG. 5(b), a hat 10d called a bucket hat, in FIG. 5(c), a hat 10e called a casquette, and in FIG. 5(d), a hat 10f called a watch cap are shown. The hat 10c, the hat 10d, the hat 10e, and the hat 10f may adopt the same configuration as the hat 10 according to the present invention, or may adopt the same configuration as the hats 10a and 10b according to the modified examples shown in FIGS. 3 and 4, or may adopt a configuration obtained by excluding the front plate 30 from the configurations of these hats 10, 10a, and 10b. Note that the morphological example of the hat 10 may take the form of a hat other than the above, such as a straw hat, an official hat, or a tall hat.

[0037] More specifically, as shown in FIG. 5(a), the hat has a cylindrical crown portion having a top and a side, and is a hat 10c in which a brim portion extends and is provided over the entire circumference from the lower end side of the crown portion. Note that the hat does not necessarily have the above characteristics strictly.

[0038] As shown in FIG. 5(b), the bucket hat has a top and a side, has a substantially cylindrical crown portion with a flat top, and is a hat 10d in which a downward brim portion extends and is provided over the entire circumference from its lower end side. Note that the bucket hat does not necessarily have the above characteristics strictly.

[0039] As shown in FIG. 5(c), the casquette has a rounded crown portion composed of a plurality of pieces of fabric, and is a hat 10e having a brim portion at the front. Note that the casquette does not necessarily have the above characteristics strictly.

[0040] As shown in FIG. 5(d), the watch cap is a hat 10f that has no brim portion and is composed of a hemispherical crown portion and completely covers the head knitted with wool or the like. Note that the watch cap does not necessarily have the above characteristics strictly.

[0041] FIG. 6 is a perspective view of a hat 10g according to Modification 3 of the embodiment. The hat 10g in FIG. 6 is a hat called a work cap. As shown in FIG. 6, the work cap is a hat 10g having a band portion 111 that surrounds the crown portion 11 at the lower end of the crown portion 11. Note that the work cap does not necessarily have the above characteristics strictly. Also, the hat 10g may be an official hat. In the hat 10g, the band portion 111 is formed of the main body fabric 20, and a cooling mechanism 45 composed of cotton 40 and an aluminum foil 50 is disposed on the back side of the front portion of the band portion 111. However, the cooling mechanism 45 does not contact the band portion 111 over the entire area and is sewn to the band portion 111 at equal intervals. The cooling mechanism 45 in the portion not sewn to the band portion 111 forms a semi-cylindrical space between it and the band portion 111, which serves as the ventilation opening 35. The formation of the ventilation opening 35 enables ventilation in the vertical direction, making it difficult for hot air to accumulate inside the crown portion 11 when the hat 10g is worn. Also, since the cotton 40 of the cooling mechanism 45 continues to be in contact with the ventilation, the vaporization of the moisture contained in the cotton 40 is promoted, increasing the cooling sensation provided by the hat 10g to the wearer. The sizes of all the ventilation openings 35 are equal, and the height of the ventilation openings 35 in the vertical direction is equal to the height of the band portion 111 of the crown portion 11. Also, since the ventilation openings 35 of the hat 10g are formed by sewing the cotton 40 and the aluminum foil 50 to the main body fabric 20, a deviation in the size of each ventilation opening 35 due to sewing may occur.

[0042] (Effect) Hereinafter, the invention obtained from the disclosure of this specification will be exemplified, and the effects and the like obtained from the exemplified invention will be described.

[0043] The invention 1 is a hat 10 having a crown portion 11, including a main body fabric 20 constituting the outer surface of the crown portion 11, cotton 40 disposed inside at least a part of the main body fabric 20, and an aluminum foil 50 disposed on the inner surface of the cotton 40 and in contact with the cotton 40, the aluminum foil 50 being provided with a plurality of holes 51 or forming a ventilation opening 35.

[0044] Such a hat 10 cools the aluminum foil 50 by heat conduction due to the evaporation of the moisture contained in the cotton 40, giving a cooling sensation to the wearer. Also, since the aluminum foil 50 has holes 51, ventilation of the hat 10 is ensured. Thus, a hat is provided that does not require a water supply tank, continuously gives a cooling sensation to the wearer, has better breathability, or allows the hot air inside the crown part 11 when worn to escape.

[0045] The invention 2 is the hat 10 of the invention 1 in which the cotton 40 and the aluminum foil 50 are arranged in a region corresponding to the front part of the crown part 11.

[0046] Such a hat 10 has a cooling mechanism 45 composed of cotton 40 and aluminum foil 50 brought to the front head part. Therefore, it is easy to contact the wearer's forehead and does not pass through the hair, so it is easier to give a cooling sensation than other parts of the head.

[0047] The invention 3 is the hat 10 of the invention 1 or 2 in which the crown part 11 is provided with a visor 30.

[0048] Such a hat 10 is provided with a visor 30, so it is possible to reinforce the front part of the crown part 11 from the inside and prevent the front part of the crown part 11 from losing its shape.

[0049] The invention 4 is any one of the hats 10a of the inventions 1 to 3 in which the cotton 40 and the aluminum foil 50 are arranged over the entire area of the crown part 11, and the total area occupied by the plurality of holes 51 of the aluminum foil 50 provided in the region corresponding to the front part of the crown part 11 per unit area of the aluminum foil 50 is larger than the total area occupied by the plurality of holes 51 of the aluminum foil 50 provided in the region corresponding to the area excluding the front part of the crown part 11.

[0050] Such a hat 10a can ensure ventilation efficiently.

[0051] The density of the plurality of holes 51 per unit area of the aluminum foil 50 provided in the region corresponding to the front part of the crown part 11 of the invention 5 is greater than the density of the plurality of holes 51 per unit area of the aluminum foil 50 provided in the region corresponding to the region excluding the front part of the crown part 11, and it is the cap 10a of the invention 4.

[0052] For such a cap 10a, since the areas of the holes 51 formed in the aluminum foil 50 are all the same, when manufacturing, it is easier to prepare the hole-making tool.

[0053] The area of each of the plurality of holes 51 of the aluminum foil 50 provided in the region corresponding to the front part of the crown part 11 of the invention 6 is greater than the area of each of the plurality of holes 51 of the aluminum foil 50 provided in the region corresponding to the region excluding the front part of the crown part 11, and it is the cap 10b of the invention 4.

[0054] For such a cap 10b, since the holes 51 provided in the aluminum foil 50 are large, the sweat exuded by the wearer can more easily penetrate through the holes 51 into the cotton 40.

[0055] In the invention 7, the aluminum foil 50 forms a ventilation port 35 together with the cotton 40, and the ventilation port 35 is formed between the main body fabric 20 and the cotton 40, and it is the cap 10g of the invention 1.

[0056] For such a cap 10g, since the ventilation contacts the cotton 40, the vaporization of the moisture contained in the cotton 40 is promoted, and it is difficult for hot air to accumulate inside the crown part 11 during wearing, and high air permeability can be ensured.

[0057] As described above, the cap according to the present invention has been described based on the embodiments and modification examples. However, the present invention is not limited to the embodiments and modification examples. As long as the gist of the present invention is not deviated from, various modifications conceived by those skilled in the art applied to the embodiments and modification examples, or other forms constructed by combining some components in the embodiments are also included in the scope of the present invention.

[0058] For example, in the embodiment, the visor 30 is provided inside the crown portion 11, but the visor 30 does not necessarily have to be provided.

[0059] For example, in Modification 3, the intervals between the locations where the cooling mechanism 45 is sewn to the band portion 111 were constant, but the sewing intervals do not have to be equal. Also, the sizes of the ventilation holes 35 do not all have to be the same. Further, the height of the ventilation holes 35 and the height of the band portion 111 of the crown portion 11 do not have to be equal. Holes 51 may be provided in the aluminum foil 50 of the hat 10g. Also, the location where the ventilation holes 35 are formed may be not only the first half circumference of the band portion 111 but also only the region that contacts the wearer's forehead.

[0060] For example, in Modification 3, the ventilation holes 35 were provided in the hat 10g having the band portion 111, but the ventilation holes 35 may be provided even in hats that do not have the band portion 111 such as the hats 10, 10c, 10d, and 10f. Specifically, the cooling mechanism 45 is provided such that the ventilation holes 35 are formed between the main body fabric 20 and the cooling mechanism 45 as in Modification 3.

Industrial Applicability

[0061] The hat according to the present invention can provide a highly breathable hat that gives a cooling sensation to the wearer.

Explanation of Signs

[0062] 10, 10a to 10g Hats 11 Crown portion 111 Band portion 12 Brim portion 20 Main body fabric 30 Visor 35 Ventilation holes 40 Cotton 45 Cooling mechanism 50 Aluminum foil 51 Holes 60 Lining fabric

Claims

1. A hat having a crown portion, wherein the crown portion comprises a main fabric constituting the outer surface of the crown portion, cotton disposed inside at least a part of the main fabric, and an aluminum foil disposed on the inner surface of the cotton and in contact with the cotton, the aluminum foil having a plurality of holes or forming a vent hole, a hat.

2. The cotton and the aluminum foil are disposed in a region corresponding to the front portion of the crown portion, The hat according to claim 1.

3. The crown portion further comprises a front piece, The hat according to claim 2.

4. The cotton and the aluminum foil are disposed over the entire region of the crown portion, The total area per unit area of the aluminum foil occupied by the plurality of holes of the aluminum foil provided in the region corresponding to the front portion of the crown portion is larger than the total area per unit area of the aluminum foil occupied by the plurality of holes of the aluminum foil provided in the region excluding the front portion of the crown portion, The hat according to any one of claims 1 to 3.

5. The density, which is the number of holes per unit area of the plurality of holes of the aluminum foil provided in the region corresponding to the front portion of the crown portion, is larger than the density, which is the number of holes per unit area of the plurality of holes of the aluminum foil provided in the region excluding the front portion of the crown portion, The hat according to claim 4.

6. The area of each of the plurality of holes of the aluminum foil provided in the region corresponding to the front portion of the crown portion is larger than the area of each of the plurality of holes of the aluminum foil provided in the region excluding the front portion of the crown portion, The hat according to claim 4.

7. The aluminum foil forms a vent hole together with the cotton, The vent hole is formed between the main fabric and the cotton, The hat according to claim 1.

Citation Information

Patent Citations

  • hat with cooling mechanism

    JP1993077215U