Device for protecting and cooling head

Abstract

To provide a device for protecting and cooling a user's head, which increases cooling time to improve a cooling effect, protects the head from external impact to enhance safety, and can be easily applied to various uses by simply modifying its structure.SOLUTION: A device for protecting and cooling a head of the present invention includes: a central portion that has a predetermined volume of space and is fixed to a top of a user's head; and a plurality of blade portions that are radially connected to the central portion and extend in a fan shape. Each of the blade portions includes: a plurality of chambers having a predetermined volume of space to be filled with PCM; and a plurality of bridges that divide and connect the chambers. Each of the chambers includes a shock absorbing and cushioning material.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a device for cooling a head, and more particularly to a device for protecting and cooling a head that can protect a user's head from external impacts and improve the cooling effect. [Background technology]

[0002] Generally, a hat is worn to block sunlight, or a helmet is worn on a user's head to prevent injury from collisions with surrounding objects or falling objects during bicycle or motorcycle driving, military training, strenuous sports and leisure activities, and at work sites.

[0003] When the surrounding temperature is high, for example, outdoor activities or outdoor work in summer, construction work in desert areas, medical and quarantine activities, or work exposed to high temperatures indoors such as in a metal melting furnace, the internal temperature of the helmet worn by the user can rise quickly.

[0004] In particular, if the helmet has poor ventilation, the temperature of the head, which is maintained at a relatively high temperature by the user's body, may suddenly rise, reducing work efficiency and affecting the user's physical condition, hindering safe activities and work, and in severe cases, may require medical treatment.

[0005] Furthermore, as the summer temperatures rise due to global warming, the number of people suffering from heat-related illnesses increases due to the prolonged heatwaves, and there is a demand for the establishment of measures to ensure health and safety.

[0006] As described above, in order to alleviate the problems caused by the temperature rise of the head, devices for cooling the head having various shapes and structures have been developed and applied.

[0007] A conventional head cooling device is generally in the shape of a bendable disk, and is configured by filling a chamber having a certain volume of space with a Phase Change Material (PCM) that changes between a solid and liquid phase at room temperature, and forming a vent for air flow between the chambers. A head cooling device configured in this way solidifies (solidifies) the PCM by maintaining the temperature below the phase change temperature (melting point or freezing point) of the PCM filled in the chamber for a certain period of time. Next, the head cooling device with the solidified PCM is attached to the top of the user's head or attached to the inside of the helmet and brought into contact with the user's head. As a result, the solid PCM changes into a liquid state and absorbs surrounding heat, providing a cooling effect to the head.

[0008] However, in the case of a thin cooling sheet among conventional head cooling devices, the amount of PCM filled in the chamber is small, so the PCM melts (liquefies) in a short time, resulting in a short cooling time, which causes the inconvenience of having to replace the cooling sheet frequently.

[0009] To solve these problems, the cooling pad has an increased volume of the chamber and the amount of PCM filled in, which increases the cooling duration and improves the cooling effect. However, when a helmet worn by a user collides with a surrounding object or a falling object hits the helmet, the weight of the solidified PCM with an increased volume induces a hammer effect that strikes the user's head a second time, which is pointed out as a safety threat.

[0010] This has created a need for technological development of a head-cooling device that can increase the cooling time and improve the cooling effect, while also protecting the user's head and improving safety even if an external impact is applied. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] Korean Patent Publication No. 10-2010-0052863 (Publication Date: May 20, 2010) [Patent Document 2] Korean Patent Registration No. 10-1424384 (Publication Date: August 1, 2014) [Patent Document 3] Korean Patent Publication No. 10-2022-0148633 (Publication date: November 7, 2022) [Patent Document 4] Korean Patent Publication No. 10-2022-0135601 (Publication date: October 7, 2022) [Patent Document 5] JP 2005-273119 A [Patent Document 6] JP 2007-217846 A Summary of the Invention [Problem to be solved by the invention]

[0012] The object of the present invention is to provide a head protecting and cooling device which increases the cooling time to improve the cooling effect, protects the user's head from external impacts to increase safety, and can be easily adapted to various uses with simple structural modifications. [Means for solving the problem]

[0013] In order to achieve the above-mentioned objectives, one aspect of the present invention provides a head protecting and cooling device which is filled with a phase change material (PCM) and is attached to a user's head to perform a cooling function, and which comprises a central portion having a predetermined volume of space and which is attached to the top of the user's head, and a plurality of blade portions which are radially connected to the central portion and extend in a fan shape, each of the blade portions comprising a plurality of chambers having a predetermined volume of space which is filled with PCM, and a plurality of bridges which separate and connect each of the chambers, and each of the chambers is provided with a cushioning material which absorbs and cushions impacts.

[0014] The central portion of the present invention can be circular or polygonal.

[0015] The central portion of the present invention may be formed with a notch of a certain length extending therethrough to connect with the adjacent wing portions.

[0016] In the present invention, a PCM and a buffer material may be further provided in the central space.

[0017] The multiple vanes of the present invention may comprise a flat first sheet and a second sheet having a plurality of the chambers preformed therein and joined to the first sheet.

[0018] The first sheet of the present invention may have a plurality of protrusions formed on the surface opposite to the surface to be joined to the second sheet, for ensuring breathability.

[0019] The multiple wing portions of the present invention may comprise a preformed first sheet having a partial space for each of the chambers, and a preformed second sheet having each of the chambers with a space larger than that of the first sheet, and being joined to the first sheet.

[0020] The chambers of the present invention may be formed to have the same cross-sectional thickness.

[0021] The plurality of chambers of the present invention may be formed so that the cross-sectional thickness is irregular as it moves radially outward from the central portion.

[0022] The plurality of chambers of the present invention may be formed such that the cross-sectional thickness increases or decreases as it moves radially outward from the central portion.

[0023] The bridge of the present invention is formed by joining the first and second sheets, and can have a thickness that allows it to bend.

[0024] The central portion and the chambers of the present invention may be filled with PCMs having the same melting point.

[0025] The central portion and the plurality of chambers of the present invention may each be filled with PCMs having different melting points.

[0026] The central portion that contacts the top of the user's head and the chamber adjacent to the central portion may be filled with a PCM having a high melting point, and the chamber away from the central portion that contacts the outer periphery of the top of the head may be filled with a PCM having a lower melting point.

[0027] The cushioning material of the present invention is an antifreeze material that is not solidified at the solidification temperature of the PCM, and the antifreeze material may be filled while being covered with a waterproof film.

[0028] The cushioning material of the present invention is a foam material having cushioning properties to absorb shock, and the outer peripheral surface thereof may be covered with a waterproof film.

[0029] The head protection and cooling device of the present invention may further comprise a coupling member for coupling to a user's body or to a helmet or hat.

[0030] According to another aspect of the present invention, a device for protecting and cooling a head is a device for cooling a head that is filled with a phase change material (PCM) and is fixed to a user's head to perform a cooling function, the device comprising: a central portion having a space of a predetermined volume, filled with PCM, and fixed to the top of the user's head; and a plurality of wing portions radially connected to the central portion, each having a predetermined volume via first and second bridges, and formed with first, second and third chambers filled with PCM, the central portion and the first, second and third chambers have outer surfaces that are inflated by filling with the PCM, and each is equipped with a cushioning material that absorbs and reduces impact, and the plurality of wing portions are formed by joining a flat first sheet, a second sheet in which spaces for the central portion and the first, second and third chambers are pre-formed and joined to the first sheet, and a third sheet in which a space for accommodating the cushioning material is pre-formed and joined to the second sheet.

[0031] The buffer materials in the central portion and the first, second and third chambers are arranged in spaces partitioned by partition walls formed in the second and third sheets.

[0032] The internal space of the central portion is divided into two semicircular cross-sectional spaces centered around the partition, each equipped with a PCM and a cushioning material, and an even number of the blade portions are connected radially from the central portion, allowing the device that protects and cools the head to be folded in half. Effect of the Invention

[0033] The head protecting and cooling device of the present invention having the above-mentioned configuration has a cushioning foam material in the chamber, so that it can protect the user's head by absorbing and cushioning external shocks, thereby increasing safety.

[0034] The cushioning material of the device for protecting and cooling a head according to the present invention is a foam material with internal voids formed therein, and therefore has an insulating effect of blocking heat transfer from the PCM, thereby delaying the liquefaction of the PCM and increasing the cooling duration.

[0035] The head protecting and cooling device of the present invention can increase the chamber volume and increase the amount of PCM filling, thereby increasing the cooling duration and extending the usage period of the head cooling device, thereby extending the replacement cycle.

[0036] The head protection and cooling device according to the present invention can be easily adapted to a variety of applications with simple modifications in shape and construction.

[0037] The present invention may be more clearly understood with reference to the accompanying drawings. [Brief description of the drawings]

[0038] [Figure 1] FIG. 2 is a perspective view showing a schematic diagram of a device for protecting and cooling a head according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a rear perspective view of FIG. [Diagram 3] FIG. 2 is a plan view of a device for protecting and cooling a head according to an embodiment of the present invention. [Figure 4] 4(a) is a cross-sectional view taken along line IV-IV in FIG. 3, FIG. 4(b) is an enlarged cross-sectional view of the "A" area in FIG. 4(a), FIG. 4(c) is an enlarged cross-sectional view showing a modified example in which a chamber is pre-formed in the first sheet, and FIG. 4(d) is an enlarged cross-sectional view showing a modified example in which a protrusion is formed on the lower part of the first sheet. [Diagram 5] FIG. 5(a) is a cross-sectional view showing an embodiment in which the thickness of the multiple chambers of FIG. 4 increases in the radial direction, and FIG. 5(b) is a cross-sectional view showing an embodiment in which the thickness of the multiple chambers decreases in the radial direction. [Figure 6] FIG. 6(a) is similar to FIG. 4(a) and is a cross-sectional view showing another embodiment of the present invention in which multiple chambers are formed using first, second and third sheets, and FIG. 6(b) is an enlarged cross-sectional view of portion "B" of FIG. 6(a). [Figure 7]1 shows a head protection and cooling device according to an embodiment of the present invention coupled to a helmet and worn; [Figure 8] 1 shows a head protection and cooling device according to another embodiment of the present invention being attached to a standard hat and worn. [Figure 9] FIG. 13 is a plan view showing a structure in which the head protecting and cooling device can be folded in half according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0039] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in the following description and the accompanying drawings, detailed description of known functions or configurations that may obscure the gist of the present invention will be omitted. It should be noted that the same elements are denoted by the same reference numerals as much as possible throughout the drawings.

[0040] The head protection and cooling device 100 of the present invention is filled with a phase change material (PCM) used in conventional head cooling devices, and is attached to a user's helmet or hat or fixed to the user's head to perform a cooling function. Therefore, in describing the present invention, detailed descriptions of known functions, configurations, or materials of head cooling devices will be omitted or will be described briefly to the extent necessary in order to clarify the gist of the present invention.

[0041] As shown in FIG. 1, a device 100 for protecting and cooling a head according to one embodiment of the present invention comprises a central portion 10 having a predetermined volume of space and fixed to the top of a user's head, and a plurality of wing portions 20 radially connected to the central portion 10 and extending in a fan shape, each of the wing portions 20 comprising a plurality of chambers 21 having a predetermined volume of space filled with PCM, and a plurality of bridges 22 separating and connecting the plurality of chambers 21 to each other, and the plurality of chambers 21 are provided with cushioning material 23 for absorbing and softening external shocks.

[0042] 1, the chamber 21 formed in each wing 20 according to an embodiment of the present invention includes three chambers, i.e., first, second, and third chambers 21a, 21b, and 21c, the bridge 22 includes two bridges, i.e., first and second bridges 22a and 22b, and the cushioning material 23 includes three cushioning materials, i.e., first, second, and third cushioning materials 23a, 23b, and 23c. However, the present invention is not limited thereto, and the numbers of the chambers 21, bridges 22, and cushioning materials 23 may be increased or decreased as necessary depending on the user's physical condition, purpose, etc.

[0043] 3, the first, second and third chambers 21a, 21b and 21c are each shaped like an arc having a predetermined width w1, w2 and w3 radially from the center 10, but are not limited thereto. Here, the radial widths w1, w2 and w3 of the first, second and third chambers 21a, 21b and 21c may be set to be the same as each other or different from each other.

[0044] Although the central portion 10 of the present invention is illustrated as having a circular shape in the embodiment of FIG. 1, it may be formed to have a space of a predetermined volume in a polygonal shape such as a triangle, a rectangle, a pentagon, or a hexagon.

[0045] The internal space of the central portion 10 is filled with PCM to increase the cooling effect on the top of the user's head, and a cushioning material 23d is further provided therein to protect the top of the user's head from external impacts.

[0046] Meanwhile, as clearly shown in FIG. 3, the central portion 10 is formed with a flange 10a having a predetermined width extending along its outer circumferential surface, and the first chamber 21a of each of the blade portions 20 is connected to this flange 10a.

[0047] 1 and 3, according to an embodiment of the present invention, a notch 10b is formed between the flange 10a of the center portion 10 and each of the blades 20, extending a predetermined length to maintain the arrangement shape of the blades 20 without impairing the bendability of the blades 20, and connects adjacent blades 20. The notch 10b connects the first chambers 21a of adjacent blades 20 to each other to reinforce rigidity, thereby supporting each blade 20 in an expanded state and allowing it to maintain its shape.

[0048] Here, the notch 10b has a recess 10c on its outer peripheral surface, and the extension length l of the notch 10b extending from the flange 10a does not exceed 1 / 2 the width w1 of the first chamber 21a, but is not limited thereto.

[0049] As shown in Figures 2, 4a and 4b, the plurality of wing portions 20 of the present invention are formed by bonding together a first sheet S1 having a flat surface and contacting the user's head, and a second sheet S2 in which a central portion 10 having a predetermined volume of space and a plurality of first, second and third chambers 21a, 21b and 21c are pre-formed. Here, the first and second sheets S1 and S2 are made of a synthetic resin material having excellent moldability, burst resistance and tensile strength, preferably, but not limited to, a polyurethane material.

[0050] Here, since the first chamber 21a is filled with the PCM under pressure, the upper and lower outer circumferential surfaces have convex surfaces after the PCM is filled in. Similarly, the upper and lower outer circumferential surfaces of the central portion 10 and the first, second and third chambers 21a, 21b and 21c also have convex surfaces.

[0051] Meanwhile, the first and second sheets S1 and S2 may be formed simultaneously or separately using a mold (not shown) of a predetermined structure in the process of high frequency bonding or thermal fusion bonding, to form the flange 10a, notch 10b, and recess 10c of the central portion 10, and the first and second bridges 22a and 22b between the first, second and third chambers 21a, 21b and 21c, and the first, second and third chambers 21a, 21b and 21c are partitioned and separated from each other by the first and second bridges 22a and 22b.

[0052] The first and second bridges 22a and 22b act as hinges that flexibly connect the first, second and third chambers 21a, 21b and 21c, and the first, second and third chambers 21a, 21b and 21c filled with solidified PCM are bent along the outer circumferential surface of the user's head through the first and second bridges 22a and 22b to maximize contact with the head, thereby improving the cooling effect.

[0053] Here, the thickness of the first and second bridges 22a, 22b is the thickness when the first and second sheets S1, S2 are overlapped and joined to each other, but the thickness can be increased or decreased to adjust the degree of bending of the first, second and third chambers 21a, 21b and 21c.

[0054] Meanwhile, as a modified example of the present invention, as shown in FIG. 4c, a structure can be formed in which a first sheet S1 protruded by a height h1 so that a portion of the volume of the first, second and third chambers 21a, 21b and 21c is recessed, and a second sheet S2 recessed to have a height h2 so as to form the remaining space of the volume of the chambers 21a, 21b and 21c are bonded together.

[0055] Therefore, when the head protecting and cooling device 100 of the present invention is worn, the first sheet S1 facing the user's head protrudes a certain height h1 from the volume of the first, second and third chambers 21a, 21b and 21c, forming an air passage between the sheet S1 and the outer periphery of the user's head through which air can flow, thereby improving the cooling effect.

[0056] As a modification of the present invention, as shown in FIG. 4d, a plurality of protrusions P may be formed on the lower surface of the first sheet S1 to form air passages through which air can flow, thereby enhancing the cooling effect.

[0057] Meanwhile, the chambers 21a, 21b, and 21c according to an embodiment of the present invention may be formed to have the same cross-sectional thickness t1 and width w1, for example, the first chamber 21a shown in Fig. 4b. However, as a modified example of the present invention, the first, second, and third chambers 21a, 21b, and 21c may be formed to have irregular cross-sectional thicknesses as they move radially outward from the central portion 10.

[0058] For example, as shown in FIG. 5a, the first, second and third chambers 21a', 21b' and 21c' may be formed such that the cross-sectional thicknesses t1', t2' and t3' gradually increase as they move radially outward from the central portion 10, or as shown in FIG. 5b, the first, second and third chambers 21a", 21b", 21c" may be formed such that the cross-sectional thicknesses t1", t2", t3" gradually decrease as they move radially outward from the central portion 10.

[0059] Meanwhile, the PCM filled in the multiple chambers 21 of the present invention may include hydrocarbon-based organic substances including tetradecane, hexadecane, heptadecane, octadecane, nanodecane, etc., and other inorganic substances, and the chemical components and compositions of these are well known, so detailed explanations will be omitted.

[0060] The buffer material 23 of the present invention may be an antifreeze material that is not solidified at the freezing temperature of the PCM. Such an antifreeze material may be used that is coated with a waterproof film and filled. The antifreeze material may include, for example, a material (in a gel or sol state) that is harmless to air, water, or the human body.

[0061] Meanwhile, the buffer material 23 of the present invention may be a foam material having a cushioning property to absorb shock, for example, a sponge having many voids therein.

[0062] Here, as shown in FIG. 4C, the cushioning material 23 made of the foam is covered with a waterproof film C so as to cover its outer periphery, thereby preventing the liquid PCM from seeping into the voids in the foam and maintaining the cushioning properties of the cushioning material 23 to absorb shock.

[0063] In addition, the buffer material 23 has an insulating effect in which the internal voids of the foam reduce or block heat transfer to the PCM filled in the chamber 21, and can delay the liquefaction of the PCM to increase the cooling duration.

[0064] Meanwhile, the central portion 10 and the first, second and third chambers 21a, 21b and 21c of the present invention may be filled with PCMs having the same melting point (freezing point).

[0065] However, as a modification of the present invention, the central portion 10 and the first, second and third chambers 21a, 21b and 21c may be filled with PCMs having different melting points in consideration of the cooling effect on the user's head.

[0066] For example, the central portion 10 and the first chamber 21a in contact with the top of the head where the temperature of the user's head is estimated to be the highest can be filled with a PCM with a high melting point, such as octadecane with a melting point of 28° C., so that the PCM remains in a solidified state at temperatures below 28° C. and the cooling duration can be extended, while the second and third chambers 21b and 21c in contact with the outer periphery of the top of the head can be filled with a PCM with a lower melting point, such as hexadecane with a melting point of 18° C., heptadecane with a melting point of 22° C., or tetradecane with a melting point of 5.5° C. Conversely, the closer to the central portion 10, the lower the PCM can be filled.

[0067] 6 shows an embodiment of a modified example of the present invention in which a device for protecting and cooling a head is formed using three sheets S1, S2, and S3. For convenience of explanation, the same reference numerals as in FIG. 4 will be used.

[0068] That is, as shown in FIG. 6b, the multiple wing portions 20 are formed by joining a flat first sheet S1, a central portion 10 having a space with a circular cross section, and a third sheet S3 joined to the second sheet S2, in which the spaces of the first, second and third chambers 21a, 21b and 21c are pre-formed with a thickness t2 and in which the buffer materials 23a, 23b, 23c and 23d are respectively accommodated, and in which spaces to accommodate the spaces of the first, second and third chambers 21a, 21b and 21c formed in the second sheet S2 are pre-formed with a thickness t3, and in which the third sheet S3 is joined to the second sheet S2.

[0069] Here, the cushioning materials 23a, 23b, 23c, 23d are formed by the second and third sheets S2, S3 and inserted into independent spaces separated by a partition wall Q, and since there is no risk of PCM intrusion, they do not need to be covered with a waterproof film, unlike the embodiment of Figure 4.

[0070] Meanwhile, the head protecting and cooling device 100 of the present invention may further comprise a coupling member 40 for coupling to a user's body or a helmet or hat.

[0071] For example, as shown in FIG. 7, the connecting member 40 according to one embodiment of the present invention forms at least one female Velcro (registered trademark) 41 on the bands 32 that are cross-arranged so as to contact the user's head under the impact absorbing material 31 inside the helmet 30, and in the head protecting and cooling device 100 of the present invention, preferably at least one male Velcro 42 is formed on the central portion 10 or among the multiple wing portions 20, and by connecting these pairs of female and male Velcro 41, 42, the head protecting and cooling device 100 according to one embodiment of the present invention can be firmly connected to the helmet 30 and brought into contact with the user's head.

[0072] As a modified example of the present invention, instead of the male and female Velcro 41, 42, at least a pair of permanent magnets 43, 44 with different poles may be applied, as shown in Fig. 7. For example, at least one or more permanent magnets 43 having one polarity may be attached to the central portion 10 of the band 32 of the helmet 30, or at least one or more permanent magnets 44 having a different polarity may be attached to the multiple wing portions 20, and the device 100 for protecting and cooling the head by the magnetic force of these permanent magnets 43, 44 may be attached to the helmet 30.

[0073] On the other hand, the head protecting and cooling device 100 of the present invention can also be applied to general hats other than helmets, such as baseball hats 50.

[0074] For example, as shown in FIG. 8, loops 45 are formed on the outer periphery of at least two wing portions 20 of head protecting and cooling device 100 of the present invention, and drawstrings 46 are respectively connected to said loops 45. Head protecting and cooling device 100 is then placed on the user's head, and said drawstrings 46 are pulled and tied. As a result, head protecting and cooling device 100 is firmly and closely supported on the head, and the user can obtain the cooling effect even while wearing a baseball cap, work cap, women's cap, etc.

[0075] The above description is a preferred embodiment of the present invention, and the present invention is not limited thereto. It should be understood that various changes and modifications are possible within the scope of the present invention by those skilled in the art.

[0076] For example, as a modified example of the present invention, the device 200 for protecting and cooling a head as shown in FIG. 9 is divided into two semicircular cross-sectional spaces 210a, 210b centered on a partition 212 in the internal space of the central portion 210, each of which is filled with PCM and includes cushioning materials 230a, 230b, and the wing portion 220 may be formed in an even number, such as 2, 4, 6, 8, 10, etc., so that the device 200 for protecting and cooling a head can be folded in half to reduce the required space.

[0077] For example, in the embodiment shown in FIG. 9, six vanes 220 are radially connected from a central portion 210, allowing the head protection and cooling device 200 to be folded exactly in half, taking up less space and making it more convenient to carry and pack. [Explanation of symbols]

[0078] 100, 200 Head protection and cooling device 10, 210 central part 10a flange 10b Notch 20, 220 Blade section 21 Chamber 21a, 21b, 21c 1st, 2nd, 3rd chambers 22 Bridge 22a, 22b 1st and 2nd bridges 23, 23d buffer material 23a, 23b, 23c 1st, 2nd, 3rd cushioning materials 40 Connecting member C. Waterproof film P protrusion Q Partition wall S1, S2, S3 1st, 2nd, 3rd seats

Claims

1. A head protection and cooling device filled with a phase change material (PCM) and attached to a user's head to perform a cooling function, A central portion having a predetermined volume of space and adapted to be fixed to a top of the user's head; A plurality of blade portions radially connected to the central portion and extending in a fan shape; Equipped with Each of the vanes has a plurality of chambers each having a predetermined volume in which a PCM is filled; A plurality of bridges that separate and connect the chambers; Equipped with A device for protecting and cooling a head, wherein each of said chambers is provided with a shock absorbing and cushioning material.

2. 2. The device for protecting and cooling a head according to claim 1, wherein the central portion is circular or polygonal in shape.

3. 3. The device for protecting and cooling a head according to claim 2, wherein the central portion is formed with a notch of a certain length extending therethrough and connecting adjacent ones of the vane portions.

4. 3. The device for protecting and cooling a head according to claim 2, further comprising the PCM and the buffer material in the central space.

5. 2. The device for protecting and cooling a head as claimed in claim 1, wherein the plurality of vanes comprises a flat first sheet and a second sheet having a plurality of the chambers preformed therein and joined to the first sheet.

6. 6. The device for protecting and cooling a head according to claim 5, wherein the first sheet has a plurality of protrusions formed on a surface opposite to the surface joined to the second sheet to ensure ventilation.

7. 2. The device for protecting and cooling a head as described in claim 1, characterized in that the plurality of vane portions include a preformed first sheet having a partial space of each of the chambers, and a preformed second sheet having a space of each of the chambers larger than that of the first sheet.

8. 6. The device for protecting and cooling a head according to claim 5, wherein the chambers are formed to have the same cross-sectional thickness as each other.

9. 9. The device for protecting and cooling a head according to claim 8, wherein the plurality of chambers are formed to have irregular cross-sectional thicknesses as they move radially outward from the central portion.

10. 10. The device for protecting and cooling a head according to claim 9, wherein the chambers are formed so that their cross-sectional thickness increases or decreases as they move radially outward from the central portion.

11. 11. The device for protecting and cooling a head according to claim 5, wherein the bridge is formed by joining the first and second sheets and has a thickness that allows it to bend.

12. 2. The device for protecting and cooling a head according to claim 1, wherein the central portion and the plurality of chambers are filled with the PCM having the same melting point.

13. 2. The device according to claim 1, wherein the central portion and the plurality of chambers are filled with the PCMs having different melting points.

14. 14. The device for protecting and cooling a head as described in claim 13, wherein the central portion in contact with the top of the user's head and the chamber adjacent to the central portion are filled with the PCM having a high melting point, and the chamber away from the central portion in contact with the outer periphery of the top of the head is filled with the PCM having a lower melting point.

15. 2. The device for protecting and cooling a head according to claim 1, wherein the cushioning material is an antifreeze material that does not solidify at the freezing temperature of the PCM, and the antifreeze material is filled and covered with a waterproof film.

16. 2. The device for protecting and cooling a head according to claim 1, wherein the buffer material is a foam material having cushioning properties to absorb shock, and an outer peripheral surface of the buffer material is covered with a waterproof film.

17. 10. The head protecting and cooling device of claim 1, further comprising a coupling member for coupling to the user's body or to a helmet or hat.

18. A head protection and cooling device filled with a phase change material (PCM) and attached to a user's head to perform a cooling function, a central portion having a predetermined volume of space, filled with PCM, and adapted to be fixed to the top of the user's head; a plurality of fins radially connected to the central portion, each having a predetermined volume via first and second bridges, and each having first, second and third chambers in which the PCM is filled; Equipped with the central portion and the first, second, and third chambers each have an outer peripheral surface expanded by filling the PCM, and each includes a cushioning material that absorbs and reduces impact; A device for protecting and cooling a head, characterized in that the multiple vane portions are formed by joining a flat first sheet, a second sheet in which spaces for the central portion and the first, second, and third chambers are pre-formed and joined to the first sheet, and a third sheet in which a space for accommodating the cushioning material is pre-formed and joined to the second sheet.

19. 20. The device for protecting and cooling a head according to claim 18, wherein the buffer material in the central portion and the first, second and third chambers is disposed in a space partitioned by a partition wall formed in the second and third sheets.

20. 20. The device for protecting and cooling a head as described in claim 18, characterized in that the internal space of the central portion is divided into two semicircular cross-sectional spaces centered on a partition wall, each of which is provided with the PCM and the cushioning material, and an even number of the wing portions are connected radially from the central portion so that they can be folded in half.

Images