Portable heat dissipation appliance

Abstract

To provide a portable heat dissipation appliance capable of suppressing heat loss at the place where the portable heat dissipation appliance is brought for use and continuously supplying the required heat to a provision destination such as a user for a longer period of time.SOLUTION: There is provided a portable heat dissipation mat 1 in which a heat-storing material pack 4 capable of releasing heat is disposed in a housing portion 35 of a main body 5 formed to be portable, and heat is released from the heat-storing material pack 4 to a provision destination. The main body 5 is formed in a flat bag shape including a first side portion 31 and a second side portion 32. In a state where the second side portion 32 and the first side portion 31 are arranged in a stacked manner, the plate-shaped heat-storing material pack 4 is disposed in the housing portion 35 adjacent to the second side portion 32 so as to be freely insertable and removable. In a state in which the heat-storing material pack 4 is housed in the housing portion 35 and heat is released, in comparison to the second side portion 32 side that sandwiches the heat-storing material pack 4, the first side portion 31 is a heat dissipation and insulation portion 3 which includes one or more bubble cushioning materials and selectively includes a heat insulating material 34 so that heat from the heat-storing material pack 4 is less likely to be transferred to the outside through the other end surface 31b of the first side portion 31 on the side separated from the heat-storing material pack 4.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a portable heat radiation applicator that is carried to the place of use and, for example, laid on an outdoor bench and sat on, and that imparts heat released from a heating element to a part of the body or the like, the place of supply, during such use.

Background Art

[0002] For example, when a visitor sits on a bench in an outdoor facility for a long time and enjoys watching a sports game or attending an outdoor event, the visitor may lay a carried cushion on the bench and sit on it for a comfortable sitting experience. Among such cushions, a heating cushion having a function of generating heat can warm the body while sitting on the bench, thereby enhancing the comfort of the visitor. An example of such a heating cushion is disclosed in Patent Document 1.

[0003] Patent Document 1 is a portable cushion having a seat portion filled with a cushioning material in a bag-shaped outer skin, a pocket formed on the surface of the seat portion, a heating element containing a solution that generates heat when crystallized from a supercooled state, and a strap provided for carrying, and capable of accommodating the heating element in the pocket in a freely removable manner. In Patent Document 1, the heating element is formed by housing a solution such as an aqueous sodium acetate solution and a trigger for stimulating the solution in a bag body, and is configured to be small enough to freely move within the space in the pocket. When the user stimulates the solution in the heating element with the trigger to crystallize the solution during use of the portable cushion, the latent heat stored in the solution is released in the portable cushion, and the seat portion is warmed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In Patent Document 1, the seat part is designed to be comfortable to sit on by means of a cushioning material such as sponge filled inside its outer skin. However, the outer skin of this seat part is not configured with any particular heat insulation measures, and the heating body is accommodated in a pocket formed on the surface of the outer skin. Therefore, when a person sits on an outdoor bench with the portable cushion of Patent Document 1 laid on it, the heat released from the heating body conducts to the cold bench seat surface and easily escapes from the seat part. The heat dissipation loss, which is so large that it cannot be ignored, loses heat other than warming the person sitting. Therefore, the portable cushion of Patent Document 1, while involving a larger heat dissipation loss, releases heat from the heating body, and thus cannot continuously warm the person sitting on the seat part at a comfortable temperature for a longer time.

[0006] Also, in the case of Patent Document 1, during the period when a person is carrying and moving the portable cushion, the heating body freely moves within the pocket in which it is accommodated, and due to the impact caused by the vibration generated as the person moves, the solution (such as an aqueous sodium acetate solution) inside the heating body may cause unintended crystallization during the movement. When the heating body gets into such a situation, when the person tries to sit on the outdoor bench at the destination with the portable cushion laid on it, the heating body has already finished releasing heat or is in the state of releasing heat.

[0007] Therefore, even if the portable cushion originally has the performance of continuously imparting heat from the heating body for a certain period of time, the heat dissipation of the heating body occurs before the start of using the portable cushion, which may cause this portable cushion to be unable to continuously impart heat to the person who wants to continue to keep warm for the time required to sit on the bench. Therefore, the usability of the portable cushion of Patent Document 1 is not good.

[0008] The present invention has been made to solve the above problems, and at the place of use where it is brought in, it suppresses heat loss and can continuously provide the required heat to the supply destination such as the user for a longer time. An object of the present invention is to provide a portable heat radiation applicator.

Means for Solving the Problems

[0009] In order to achieve the above object, the portable heat radiation applicator according to the present invention has the following configuration.

[0010] (1) A portable heat radiation applicator having a heating element capable of dissipating generated heat and a main body formed in a portable manner, and releasing heat from the heating element disposed in the accommodating portion of the main body to a heat supply destination, wherein the heating element is formed in a plate shape, the main body is formed in a flat bag shape including a first side portion and a second side portion that can be arranged to face each other, and the heating element is provided adjacent to the second side portion in a state where the second side portion and the first side portion are arranged in a laminated state. It is arranged in the accommodating portion so that it can be freely stored or taken out, and in a state where the heating element is stored in the accommodating portion and heat is dissipated, compared to the second side portion side sandwiching the heating element, the heat of the heating element is separated from the heating element. The first side portion is a heat radiation heat insulation portion configured to include at least one or more first heat insulating materials, or a heat radiation heat insulation portion configured to include at least the first heat insulating material in a state where a second heat insulating material in the form of a sheet having heat insulating properties is laminated.

[0011] Note that the concept of the first heat insulating material in the portable heat dissipation device according to the present invention is, for example, for resins such as polyethylene (PE), polystyrene (PS), polypropylene (PP), polyurethane (PU), etc., in which gas is finely dispersed to reduce weight, and is formed into a plate-like foam material that can be elastically deformed, a plate-like rubber member. In addition, for example, it has a three-layer structure made of a resin sheet material such as polyethylene (PE), etc. The layers at both ends are flat, and in the middle layer, a hollow air-filled portion formed into a cylindrical or hexagonal shape is formed in a form where adjacent ones are intermittently separated under a geometric and regular arrangement, such as a bubble buffer material. That is, this first heat insulating material has heat insulating properties and, as an example, has a specific gravity of 0.1 (g / cm 3 ) or less and is lightweight enough not to cause particular difficulties during carrying. Even when a load corresponding to the weight of an adult male of average build acts, it is defined as a general term for a member having the property of remaining in the elastic deformation range without being completely crushed and having load-bearing properties.

[0012] In addition, as an example of the substance forming the first heat insulating material, in addition to the aforementioned bubble buffer material, heat insulating material applicable substances such as glass wool, rock wool, cellulose fiber, insulation board, wool, unit cork, polyethylene foam, bead method polystyrene foam, rigid urethane foam, phenol foam, corrugated cardboard, etc. can be mentioned. Also, the first heat insulating material may be configured to be integrated with a part of the member having sufficient load-bearing properties described above in a manner such as pasting or joining. In addition, regarding an example of the second heat insulating material, in addition to a non-thermally conductive substance formed in a film shape from a material such as a metal foil of aluminum or the like formed with a thickness of several to several hundred μm by surface treatment such as vapor deposition or pasting, and a resin or the like having lower thermal conductivity than a metal, these heat insulating material applicable substances can be mentioned.

[0013] Furthermore, when the first heat insulating material and the second heat insulating material are laminated, the material forming the first heat insulating material and the material forming the second heat insulating material may be the same or different from each other. In particular, when it is desired to change the specifications and characteristics of both the portion of the first heat insulating material disposed on the heat radiation insulating portion side described above and the portion disposed on the heat radiation heat transfer portion side described below, if the first heat insulating material is a single unit, manufacturing such a first heat insulating material may be technically difficult and costly. As one of the countermeasures to avoid such a situation, when the first heat insulating materials are laminated with each other as single units, it becomes relatively easy to change the specifications and characteristics of both the first heat insulating material disposed on the heat radiation insulating portion side and the first heat insulating material disposed on the heat radiation heat transfer portion side.

[0014] (2) In the portable heat radiation device described in (1), in a state where the heat generating body is housed in the housing portion and heat is radiated, compared with the first side portion side sandwiching the heat generating body, the heat of the heat generating body is more likely to be heat-insulated on the second side portion side on the side separated from the heat generating body. The second side portion is a heat radiation heat transfer portion composed of the first heat insulating material having at least the same or higher load-bearing characteristics as the first side portion side in comparison with the first side portion side and suppressing the amount of elastic deformation accompanying the load.

[0015] In addition, in the portable heat radiation device according to the present invention, regardless of the presence or absence of the second heat insulating material, when configuring the heat radiation insulating portion with at least one or more first heat insulating materials, regardless of the quantity of the first heat insulating materials used, it is preferable that the heat radiation insulating portion is configured to have at least the same thickness as the heat radiation heat transfer portion or a greater thickness than the heat radiation heat transfer portion. The reason is that when the thickness of the heat radiation insulating portion is greater than that of the heat radiation heat transfer portion, the heat loss of the heat generating body transferring heat from the first side portion side to the outside can be easily suppressed. On the other hand, when the thickness of the heat radiation heat transfer portion is smaller than that of the heat radiation insulating portion, the heat of the heat generating body tends to be easily transferred from the second side portion on the heat-insulated side to the heat-providing destination such as the body.

[0016] (3) In the portable heat dissipation device described in (1) or (2), the first heat insulating material is a bubble cushioning material. (4) In the portable heat dissipation device described in (3), the second heat insulating material is formed in close contact with the surface of the bubble cushioning material. (5) In the portable heat dissipation device described in any one of (1) to (4), the main body is in a mode that can be reversibly deployed or assembled, and on the opposite side of the second side portion sandwiching the heating element, there is a third side portion that can be arranged adjacent to the first side portion. The third side portion is made of a bubble cushioning material. Both the first side portion and the second side portion are each formed in a rectangular shape composed of one set of sides including a first side and another set of sides including a second side. In the state where the main body is deployed, at least the first sides of the first side portion and the second side portion, or at least the second sides of the first side portion and the second side portion are connected, and at least one side of the four sides forming the second side portion is connected to the third side portion. In the state where the main body is assembled, the accommodating portion is formed between either one of the first side portion or the third side portion and the second side portion. (6) In the portable heat dissipation device described in (5), fixing means that can be detachably connected is provided on the main body for the portions that are superposed in an opposing arrangement with each other under the state where the main body is assembled among the first side portion, the second side portion, and the third side portion. (7) In the portable heat dissipation device described in any one of (1) to (6), the heating element is foldable. (8) In the portable heat dissipation device described in any one of (1) to (7), the heating element is a heat storage material pack in which a latent heat storage material that performs heat storage or heat dissipation by utilizing the inflow and outflow of latent heat accompanying a phase change is filled without leakage into the internal space of the accommodating member. (9) In the portable heat dissipation device described in (8), a flow regulation portion for regulating the flow of the melt of the latent heat storage material is provided in the internal space of the accommodating member. In the portable heat dissipation device described in (10)(8), it is characterized by comprising heating means for heating the heating element, and the heating means is a sheet-shaped heater that is in surface contact with the heat storage material pack to heat the latent heat storage material. In the portable heat dissipation device described in (11)(10), it is characterized in that the heating means is a carbon heater. In the portable heat dissipation device described in (12)(8), it is characterized in that the latent heat released from the latent heat storage material is heat in a temperature range of 20°C or higher to 90°C or lower, or cold heat in a temperature range of 0°C or higher to less than 20°C. In the portable heat dissipation device according to any one of (1) to (12), it is characterized in that the main body is provided with carrying assistance means for assisting a person in carrying it during carrying. Characterized by.

[0017] The operation and effect of the portable heat dissipation device according to the present invention having the above configuration will be described.

[0018] In a portable heat dissipation device having a heating element capable of dissipating generated heat and a main body formed in a portable manner, and the heat from the heating element disposed in the accommodating portion of the main body is released to a heat-providing destination, the heating element is formed in a plate shape, the main body is formed in a flat bag shape including a first side portion and a second side portion that can be disposed opposite to each other, and the heating element is disposed in a manner that can be freely stored or taken out in an accommodating portion provided adjacent to the second side portion in a state where the second side portion and the first side portion are disposed in a laminated state. In a state where the heating element is stored in the accommodating portion and heat is dissipated, the first side portion is a heat dissipation heat insulation portion configured to include at least one or more first heat insulation materials, or a heat dissipation heat insulation portion configured to include at least the first heat insulation material in a state where a sheet-shaped second heat insulation material having heat insulation properties is laminated, so that it is difficult for the heat of the heating element to be transferred to the outside from the end surface of the first side portion on the side separated from the heating element compared to the second side portion side sandwiching the heating element. Particularly with respect to the first heat insulation material, in the portable heat dissipation device described in (3), the first heat insulation material is a bubble cushioning material.

[0019] Due to this feature, for example, when sitting on a bench in an outdoor facility such as a sports game or an outdoor event and enjoying watching the game for a long time, or when sitting on a park bench to relax, etc., when a person sits on a chair or the like through the portable heat dissipation device according to the present invention with the heat dissipation and heat insulation part in contact with the seating surface or backrest of the chair or the like, among the heat generated by the heating element, the heat dissipation loss that transfers heat towards the seating surface or backrest of the chair or the like can be suppressed by the heat dissipation and heat insulation part. Therefore, the portable heat dissipation device according to the present invention is configured in a manner that suppresses unnecessary heat dissipation loss to the chair or the like side and enhances the heat retention property with respect to the heat dissipation from the heating element. As a result, the heat released from the heating element is maintained at an optimal temperature where the user can feel comfort for a longer time by suppressing the unnecessary heat dissipation loss out of the total heat capacity that can be dissipated from the heating element, and is transferred to the second side portion arranged on the body side.

[0020] Therefore, according to the portable heat dissipation device according to the present invention, at the place of use brought in, it is possible to suppress heat loss and continuously impart the required heat to the supply destination such as the user, and it has an excellent effect.

[0021] In the portable heat dissipation device described in (2), in a state where the heating element is housed in the housing part and heat is dissipated, the second side portion is configured such that, compared to the first side portion side sandwiching the heating element, the heat of the heating element is more easily heat-insulated on the second side portion side that is separated from the heating element. That is, the second side portion has at least equivalent or higher load-bearing characteristics compared to the first side portion side, and is a heat dissipation and heat transfer part composed of a first heat insulation material that suppresses the elastic deformation amount accompanying the load application.

[0022] Due to this feature, the heating element can be firmly heat-insulated without being crushed by the load applied from a person on the second side portion while suppressing the heat dissipation to the first side portion side. Therefore, heat can be transferred from the heating element to the heat supply destination such as a person through the second side portion for a longer time. As an example, when the portable heat dissipation device according to the present invention is prepared in a state where heat can be dissipated and heat dissipation is started from the heating element, the heat of the heating element can be maintained at a decrease of about 1 °C, for example, and can be continuously dissipated to the heat dissipation and heat transfer part for a long time of 4 hours or more, and can be transferred from the second side portion to the heat supply destination such as a person.

[0023] In the portable heat dissipation device described in (4), the second heat insulating material is formed in close contact with the surface of the bubble cushioning material.

[0024] Due to this feature, the second heat insulating material is, for example, laminated on the surface of the bubble cushioning material included in the first side portion with a thickness of only a few to several hundred μm. The heat dissipation and heat insulation portion effectively suppresses wasteful heat dissipation loss to the side of a chair or the like with respect to the heat dissipation from the heating element, and in the heat dissipation and heat transfer portion, the heat dissipation from the heating element is transferred to a heat supply destination such as a person's body in a sitting posture at a higher temperature.

[0025] In the portable heat dissipation device described in (5), the main body is in a mode that can be reversibly deployed or assembled, and has a third side portion that can be arranged adjacent to the first side portion on the opposite side of the second side portion that sandwiches the heating element. The third side portion is made of a bubble cushioning material. Both the first side portion and the second side portion are each formed in a rectangular shape formed by a set of sides including a first side and another set of sides including a second side. In a state where the main body is deployed, at least the first sides of the first side portion and the second side portion, or the second sides of the first side portion and the second side portion are connected, and at least one side of the four sides forming the second side portion is connected to the third side portion. In a state where the main body is assembled, the accommodating portion is formed between either the first side portion or the third side portion and the second side portion.

[0026] Due to this feature, when carrying the portable heat dissipation device according to the present invention to a place of use and using it, since the main body can be reversibly deployed or assembled, the heating element can be easily stored and taken out with respect to the accommodating portion of the main body.

[0027] In the portable heat dissipation device described in (6), fixing means that can be detachably connected is provided on the main body for the portions that are superposed in an opposing arrangement with each other in a state where the main body is assembled among the first side portion, the second side portion, and the third side portion.

[0028] Due to this feature, after the assembly of the main body, the first side part, the second side part, and the third side part can be connected at the overlapping parts by the fixing part. Therefore, even when the portable heat dissipation device according to the present invention is in use, the heat generating body accommodated in the accommodating part can be prevented from coming off the main body, and the arranged state accommodated between the first side part and the second side part can be maintained.

[0029] The portable heat dissipation device according to (7) is characterized in that the heat generating body is foldable.

[0030] Due to this feature, when carrying the portable heat dissipation device according to the present invention to the place of use, the heat generating body can be carried in a compact form. Therefore, even if the heat generating body is separately configured from the main body, it is easier to be accommodated in a carrying bag, a tote bag, etc., and it can be carried to the place of use without any particular difficulty during movement.

[0031] The portable heat dissipation device according to (8) is characterized in that the heat generating body is a heat storage material pack in which a latent heat storage material that stores or releases heat by utilizing the inflow and outflow of latent heat accompanying a phase change is filled without leakage in the internal space of the accommodating member.

[0032] Due to this feature, the latent heat storage material can temporarily store the provided heat and then release the latent heat stored in the latent heat storage material at the place of use of the portable heat dissipation device according to the present invention. The cycle of heat storage and its heat release can be repeatedly used multiple times. Also, in the portable heat dissipation device according to the present invention, since the temperature of heat release by the heat generating body varies depending on the constituent components of the latent heat storage material, by using the latent heat storage material of the selected constituent components in accordance with the desired heat release temperature, the heat generating body can be configured to match the temperature range to be heated (or cooled).

[0033] The portable heat dissipation device according to (9) is characterized in that a flow regulation part for regulating the flow of the melt of the latent heat storage material is provided in the internal space of the accommodating member.

[0034] Due to this feature, especially when carrying the portable heat dissipation device according to the present invention to the place of use or when storing it without using the portable heat dissipation device according to the present invention, etc., when the heat storage material pack is in a hanging arrangement posture from top to bottom and the latent heat storage material is in a molten state, it is possible to suppress the molten latent heat storage material from being biased downward in the heat storage material pack by the flow regulation portion. Thereby, in the heat storage material pack, even when the latent heat storage material undergoes a phase change from melting (liquid phase state), the latent heat storage material in the heat storage material pack is likely to solidify (solid phase state) in a manner that avoids unevenness throughout its thickness. Therefore, when using the portable heat dissipation device according to the present invention, based on the heat dissipation of the latent heat generated when the latent heat storage material undergoes a phase change to the solid phase, the heat released from the heat storage material pack can be transferred to the second side portion in a more uniform distribution and temperature state.

[0035] (10) The portable heat dissipation device described in (10) is provided with heating means for heating the heating element, and the heating means is a sheet-like heater that is in surface contact with the heat storage material pack to heat the latent heat storage material.

[0036] Due to this feature, when it is desired to heat two heat storage material packs, one used in the portable heat dissipation device according to the present invention and the other spare heat storage material pack, the heater can be sandwiched between the two heat storage material packs, and the two heat storage material packs can be heated by the heater simultaneously. Therefore, with the heating time of one heat storage material pack, two heat storage material packs can be heated, and latent heat can be efficiently stored in each latent heat storage material.

[0037] (11) The portable heat dissipation device described in (11), wherein the heating means is a carbon heater.

[0038] Due to this feature, the heating element has an operation feeling similar to that of charging a mobile phone used daily, can be easily heated by the carbon heater, can raise the temperature of the entire latent heat storage material in the heating element with a uniform temperature distribution, and can make the latent heat storage material reach a state where latent heat storage is completed, for example, about 3 hours after energizing the heater.

[0039] In the portable heat dissipation device described in (12), the latent heat released from the latent heat storage material is sensible heat in a temperature range of 20°C or higher and 90°C or lower, or cold heat in a temperature range of 0°C or higher and less than 20°C, which is characterized by this.

[0040] Due to this feature, for example, when a person sits on a bench or chair in an outdoor facility in a cold state and enjoys watching a game through the portable heat dissipation device according to the present invention, the portable heat dissipation device according to the present invention can effectively warm the person's body in a sitting position, etc. comfortably at a temperature of about twenty-something to forty-something degrees Celsius by the heat dissipation from the heating element. Also, when a person sits on a bench or chair in an outdoor facility in a state under the scorching sun and enjoys watching a game through the portable heat dissipation device according to the present invention, the portable heat dissipation device according to the present invention can effectively cool the person's body in a sitting position, etc. comfortably at a temperature of about several to ten-something degrees Celsius by the heat dissipation from the heating element.

[0041] In the portable heat dissipation device described in (13), the main body is provided with carrying assistance means for assisting a person in carrying it when in use, which is characterized by this.

[0042] Due to this feature, when a person uses the portable heat dissipation device according to the present invention, the burden on the person can be reduced by carrying the portable heat dissipation device according to the present invention using the carrying assistance means.

Brief Description of the Drawings

[0043]

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Mode for Carrying Out the Invention

[0044] Hereinafter, an embodiment of the portable heat dissipation device according to the present invention will be described in detail with reference to the drawings. The portable heat dissipation device according to the present invention disposes a heating element capable of dissipating generated heat in a housing portion of a main body formed in a portable manner, and uses the heat dissipated from the heating element to be applied to a specific part of the body or the like as a heat supply destination. As a specific example, when spectators enjoy sports viewing at an outdoor facility or participate in an outdoor event, and sit on a bench in a cold facility for a long time to enjoy the viewing, or when a person sits on a bench in a park to relax, etc., the portable heat dissipation device of the present invention is disposed on the seat or backrest of a bench or chair for comfortable sitting and used. Hereinafter, in the portable heat dissipation device according to the present invention, in this embodiment, a portable heat dissipation mat used in such a sitting posture as a heating device will be described.

[0045] First, an overview of the portable heat dissipation mat 1 will be briefly described. FIG. 1 is an explanatory diagram schematically showing a main part of a portable heat dissipation mat having a three-side structure according to an embodiment, (a) is a front view thereof, (b) is a cross-sectional view taken along the line A-A in FIG. 1(a) in the case of the first assembly structure, and (c) is a cross-sectional view taken along the line A-A in FIG. 1(a) in the case of the second assembly structure. As shown in FIG. 1, the portable heat dissipation mat 1 (portable heat dissipation device) is roughly divided into a heat storage material pack 4 and a main body 5, and the heat storage material pack 4 (heating element) is stored in a housing portion 35 in the main body 5 and used.

[0046] <Configuration of the heat storage material pack 4> Next, the heat storage material pack 4 will be described with reference to FIGS. 2 and 3. FIG. 2 is an explanatory diagram schematically showing a heat storage material pack according to an embodiment, (a) is a plan view thereof, and (b) is a cross-sectional view taken along the line B-B in FIG. 2(a). FIG. 3 is an explanatory diagram schematically showing a latent heat storage material composition loaded in the heat storage material pack according to the embodiment. As shown in FIGS. 2 and 3, the heat storage material pack 4 is a plate-shaped heating element, and has a latent heat storage material composition 10 containing a latent heat storage material 11, a trigger piece 13, a housing member 20, and the like.

[0047] The housing member 20 is a member for housing, for example, 500 g of the latent heat storage material composition 10 filled without leakage into the internal space 20S, together with the trigger piece 13. The housing member 20 is made of a flexible resin sheet material such as polypropylene (PP), polyethylene (PE), etc. In this embodiment, it is made of polyvinyl chloride (PVC) which exhibits a higher texture, is excellent in weather resistance against high temperature, ultraviolet rays, etc., and also in processability by heat fusion. The sheet thickness per piece of the housing member 20 is less than 1 mm as a guideline, and in this embodiment, it is about 0.3 to 0.5 mm. The housing member 20 has a joining portion 21 formed by overlapping two rectangular resin sheet materials, securing the internal space 20S, and then connecting the outer peripheral edges to each other by, for example, heat fusion (welding), adhesion, etc.

[0048] Also, as shown in FIG. 2, in the internal space 20S of the housing member 20, in this embodiment, the flow restricting portions 22 are provided at two locations in a configuration where they face each other and are spaced apart in the long side direction with respect to the joining portion 21 parallel to the long side (the side in the left - right direction in FIG. 2) of the heat storage material pack 4. The flow restricting portion 22 is shorter than the length of the short side (the side in the up - down direction in FIG. 2) of the heat storage material pack 4, and is formed by joining two resin sheet materials overlapped in two layers by heat fusion (welding), etc., similar to the joining portion 21. The flow restricting portion 22 has a function of restricting the flow of the melt of the latent heat storage material composition 10 filled in the internal space 20S, and the melt of the latent heat storage material composition 10 is made difficult to freely flow in the internal space 20S by the flow restricting portion 22. Also, the heat storage material pack 4 is formed to be foldable, and in this embodiment, it can be folded into three folds at the two flow restricting portions 22.

[0049] The latent heat storage material composition 10 includes a latent heat storage material 11 that stores or releases heat by utilizing the inflow and outflow of latent heat accompanying a phase change, and an additive 12 that adjusts the physical properties of the latent heat storage material 11. The latent heat storage material 11 can repeatedly undergo a phase change between melting (liquid phase state) and solidification (solid phase state) over a plurality of times. The heat released from the latent heat storage material composition 10 is thermal heat within a temperature range of 20°C or higher to 90°C or lower, or cold heat within a temperature range of 0°C or higher to less than 20°C, which is a comfortable temperature standard for humans without any particular discomfort. As described above, in this embodiment, since the portable heat radiation mat 1 is a heating device that releases thermal heat, the melting temperature (melting point) of the latent heat storage material composition 10 is adjusted and set to be around 30°C.

[0050] As an example, the latent heat storage material 11 is mainly composed of sodium acetate trihydrate (CH3COONa·3H2O), and glycerin (C3H5(OH)3) is added as a melting point adjuster and softener, which is the additive 12. Sodium acetate trihydrate alone has a water of hydration number of 3, a molecular weight [g / mol] of 136.08, a melting point of 58°C, a heat storage capacity of approximately 276 kJ / kg (400 kJ / L), and at temperatures lower than the melting point, it is in a solid state that is easily soluble in water and has a physical property that is prone to significant supercooling phenomenon.

[0051] In addition to sodium acetate trihydrate, the latent heat storage material 11 may be, for example, a first case where it is sodium sulfate decahydrate (Na2SO4·10H2O), which is a kind of sulfate, or a second case where it is a mixture of sodium acetate trihydrate and sodium sulfate decahydrate, etc. It may also be a heat storage material mainly composed of a mixture containing two or more kinds or a mixed crystal. The physical properties of sodium sulfate decahydrate alone are a water of hydration number of 10, a molecular weight [g / mol] of 322.21, a melting point of 32.38°C, and at temperatures lower than the melting point, it is a solid substance soluble in water.

[0052] Glycerin has a molecular weight [g / mol] of 92.09382, a melting point of 17.8°C, and a density of 1.261 g / cm 3, odorless, easily soluble in water, a colorless and transparent liquid at temperatures higher than its melting point, a substance safe for the human body, and a physical property that is highly prone to supercooling. Since the latent heat storage material composition 10 contains glycerin, even when it becomes solid, it exhibits a certain degree of flexibility and can be easily deformed. As an example, the mixing ratio of sodium acetate trihydrate and glycerin in the latent heat storage material composition 10 is within the range of 75 - 25 wt% for sodium acetate trihydrate and 85 - 15 wt% for glycerin.

[0053] Note that the melting temperature (melting point) of the latent heat storage material composition 10 is not limited to around 30°C, and the mixing ratio of sodium acetate trihydrate and glycerin is appropriately adjusted according to the desired heat release temperature of the latent heat storage material 11. Also, although glycerin is used as the melting point adjuster and softener contained in the latent heat storage material composition 10, for example, the melting point adjuster for the main material such as sodium acetate trihydrate can be variously changed other than glycerin.

[0054] In addition, in this embodiment, the latent heat storage material composition 10 is a mixture in which glycerin is added to sodium acetate trihydrate as the main component. However, a colorant may be incorporated into the latent heat storage material 11 together with glycerin. The colorant is a natural pigment or the like that colors the melt of the latent heat storage material composition 10 with an easily visible color, is a non-dangerous and non-toxic substance with high safety, excellent heat resistance, and can be colored in a stable state without deterioration even in a usage environment exposed to direct sunlight. It is a liquid or powder pigment. As an example, it is a carbon pigment mainly composed of carbon with relatively high heat conductivity. When the carbon pigment is dispersed between the particles of the latent heat storage material 11 and colors the entire latent heat storage material composition 10 black, the carbon pigment contributes to the improvement of the heat storage rate and heat release rate in the latent heat storage material composition 10.

[0055] The trigger piece 13 is a member capable of releasing the supercooling phenomenon of the molten latent heat storage material composition 10 in a supercooled state and capable of being used repeatedly. Specifically, the trigger piece 13 is a thin metal plate-like piece formed in an elastically deformable state with a curved portion that rises highest in the direction of the central axis at the center position within the diameter of a substantially circular dish shape about the size of a 5-yen coin. The trigger piece 13 applies an impact to the latent heat storage material composition 10 to release the supercooling phenomenon by pressing the curved portion from the raised side to the opposite side in the direction of the central axis to bend it back and invert the direction of the peaks of the curved portion.

[0056] In this way, trigger piece 13 plays a role in releasing the supercooling phenomenon of latent heat storage material composition 10 that remains in a liquid phase due to the occurrence of the supercooling phenomenon. In addition, trigger piece 13 also plays a role in what is called a heat release operation function, since trigger piece 13 changes the phase of latent heat storage material composition 10 to a solid phase by performing an operation to release the latent heat stored in latent heat storage material 11 toward main body 5 in accordance with the timing at which it is desired to heat portable heat release mat 1.

[0057] 13(a) is an explanatory diagram showing a portable heat dissipation mat according to an embodiment, and (a) is a schematic diagram showing how heat is stored in the latent heat storage material of a heat storage material pack. In the portable heat dissipation mat 1, 1X according to this embodiment, before use, latent heat is stored in advance in the latent heat storage material composition 10 (latent heat storage material 11) in the heat storage material pack 4, and the heat storage material pack 4 is heated by a heater 50 (see FIG. 13). The heater 50 is a sheet-like carbon heater that comes into surface contact with the heat storage material pack 4 to heat the latent heat storage material composition 10.

[0058] Specifically, as illustrated in FIG. 13, the heater 50 is sandwiched between two heat storage material packs 4, and by heating the two heat storage material packs 4 simultaneously, the heat treatment of the heat storage material pack 4 is performed. The carbon heater is a heating means in which a glass cloth impregnated with carbon as a heating element is laminated and sandwiched with an insulator such as epoxy glass·PET and integrated in a flat sheet form. The heater 50, as an example, has a thickness of about 0.3 to 2 mm, a size about A4 size, and can generate heat up to several tens to one hundred and several tens of °C (in this embodiment, the heat generation temperature is 70 °C) by energization, and can generate heat at a uniform temperature evenly over the entire latent heat storage material composition 10 of the heat storage material pack 4 shown in FIG. 2(a).

[0059] <Configuration of the main body 5> Next, the main body 5 will be described with reference to FIGS. 1 and 4 to 11. FIG. 4 is an explanatory diagram showing the assembly procedure according to the first example among the cases where the main part of the portable heat dissipation mat shown in FIG. 1 is configured with the first assembly structure, and FIG. 5 shows an explanatory diagram showing the assembly procedure according to the first example among the cases where it is configured with the second assembly structure. FIG. 6 shows the assembly procedure according to the second example among the cases where the main part of the portable heat dissipation mat shown in FIG. 1 is configured with the second assembly structure in (a), and (b) is an explanatory diagram showing the main part in (a). FIG. 7 is an explanatory diagram showing the assembly procedure according to the second example among the cases where the main part of the portable heat dissipation mat shown in FIG. 1 is configured with the first assembly structure, and FIG. 8 is an explanatory diagram showing the assembly procedure according to the third example among the cases where it is configured with the first assembly structure.

[0060] FIG. 9 is an explanatory diagram schematically showing the main part according to the first example for the portable heat dissipation mat with a two-side structure according to the embodiment. (a) shows the state before the heat storage material pack is stored in the storage part, and (b) shows the state where the heat storage material pack is stored in the storage part. FIG. 10 is an explanatory diagram schematically showing the main part according to the second example for the portable heat dissipation mat with a two-side structure according to the embodiment. (a) is its front view, and (b) is a cross-sectional view taken along the line C-C in FIG. 10(a).

[0061] As shown in FIGS. 1 and 4 to 10, in the portable heat dissipation mat 1, 1X, the main body 5 is formed in a flat bag shape including a first side portion 31 and a second side portion 32 that can be arranged opposite to each other. With the second side portion 32 and the first side portion 31 arranged in a laminated state, the heat storage material pack 4 is disposed in a housing portion 35 provided adjacent to the second side portion 32 in a manner that it can be freely stored or taken out. The housing portion 35 has a size such that it can maintain an appropriate clearance with the heat storage material pack 4, without causing difficulty in putting in and taking out the stored heat storage material pack 4, and not moving widely due to movement, vibration, etc. during the carrying of the portable heat dissipation mat 1, 1X.

[0062] In the portable heat dissipation mat according to the present embodiment (the portable heat dissipation mat 1 with a three - side structure and the portable heat dissipation mat 1X with a two - side structure), as shown in FIGS. 1 and 10 etc., in the state where the heat storage material pack 4 is stored in the housing portion 35 and heat is dissipated, compared with the second side portion 32 side sandwiching the heat storage material pack 4, the heat of the heat storage material pack 4 (the latent heat dissipated from the latent heat storage material composition 10) is difficult to transfer to the outside from the other end surface 31b of the first side portion 31 on the side separated from the heat storage material pack 4. Thus, the first side portion 31 is formed as a heat dissipation and heat insulation portion 3 that selectively includes at least one or more bubble cushioning materials (the first heat insulation material) and has a heat insulation property.

[0063] On the contrary, compared with the first side portion 31 side sandwiching the heat storage material pack 4, the heat of the heat storage material pack 4 is easily heat - retained on the second side portion 32 side on the side separated from the heat storage material pack 4. Thus, the second side portion 32 is formed as a heat dissipation and heat transfer portion 2 composed of a bubble cushioning material having at least equivalent or more load - bearing characteristics compared with the first side portion 31 and suppressing the elastic deformation amount accompanying the load.

[0064] In the portable heat dissipation mat 1,1X, in the thickness direction thereof (in the left-right direction in FIG. 1(b) for reference), it is preferable that the heat dissipation and heat transfer portion 2 is thinner than the heat dissipation and heat insulation portion 3. The reason is that when the thickness of the heat dissipation and heat insulation portion 3 is larger than that of the heat dissipation and heat transfer portion 2, the heat (latent heat dissipated from the latent heat storage material composition 10) of the heat storage material pack 4 is likely to suppress the heat dissipation loss of heat transfer to the outside from the other end face 31b side of the first side portion 31. On the contrary, when the thickness of the heat dissipation and heat transfer portion 2 is smaller than that of the heat dissipation and heat insulation portion 3, the heat (latent heat dissipated from the latent heat storage material composition 10) of the heat storage material pack 4 is likely to transfer heat from the second side portion 32 on the heat-insulated side to the body side.

[0065] Specifically described. In the case of the portable heat dissipation mat 1 with a three-side structure, the main body 5 has a third side portion 33 that can be arranged adjacent to the first side portion 31 on the opposite side of the second side portion 32 that sandwiches the heat storage material pack 4. The portable heat dissipation mat 1 with a three-side structure is roughly classified into the case of being configured with a first assembly structure as shown in FIGS. 1(a) and 1(b), and the case of being configured with a second assembly structure as shown in FIGS. 1(a) and 1(c). In the first assembly structure, as shown in FIGS. 4, 7, and 8, on the opposite side of the second side portion 32 that sandwiches the heat storage material pack 4, the heat storage material pack 4 is arranged adjacent to the third side portion 33, and the first side portion 31 is arranged in a state of being laminated on the third side portion 33.

[0066] In the second assembly structure, as shown in FIGS. 5 and 6, on the opposite side of the second side portion 32 that sandwiches the heat storage material pack 4, the heat storage material pack 4 is arranged adjacent to the first side portion 31, and the third side portion 33 is arranged in a state of being laminated on the first side portion 31. Further, in the case of the portable heat dissipation mat 1X with a two-side structure, as shown in FIGS. 9 and 10, the heat storage material pack 4 is arranged between the first side portion 31 and the second side portion 32.

[0067] In the portable heat dissipation mat 1 and 1X, both the first side portion 31 and the second side portion 32 are formed of a bubble cushioning material in this embodiment, and the third side portion 33 of the portable heat dissipation mat 1 is also formed of a bubble cushioning material. The bubble cushioning material has, for example, a three-layer structure made of a resin sheet material such as polyethylene (PE: polyethylene). The layers at both ends are flat, and in the middle layer, hollow air-filled portions formed in a cylindrical or hexagonal shape are formed in a geometric and regular arrangement with intermittent gaps between adjacent ones. The bubble cushioning material has a function of buffering the external force received from the outside by the air filled in the air-filled portion. Since the portable heat dissipation mats 1 and 1X are formed of a bubble cushioning material for the first side portion 31, the second side portion 32, and the third side portion 33, the weight excluding the heat storage material pack 4 is also less than 100 g and is lightweight enough not to cause difficulty in carrying.

[0068] In the portable heat dissipation mats 1 and 1X, the first side portion 31, the second side portion 32, and the third side portion 33 are all constituted by a bubble cushioning material for high strength having a load-bearing capacity of about several hundred kg to 1 t per unit area, for example. Also, as illustrated in FIG. 10, the heat insulating material 34 (the second heat insulating material) is an aluminum sheet formed by vapor deposition treatment with a thickness of several to several hundred μm and adhered closely to the other end surface 31b of the first side portion 31 which is the surface of the bubble cushioning material. In this embodiment, the first side portion 31 with the heat insulating material 34 is configured for the two-side structure portable heat dissipation mat 1X illustrated in FIG. 10. However, the first side portion 31 with the heat insulating material 34 is not limited to the two-side structure portable heat dissipation mat 1X and may be applied to the three-side structure portable heat dissipation mat 1 illustrated in FIGS. 4 to 8.

[0069] In addition, in this embodiment, the heat insulating material 34 targets an aluminum sheet formed with a thickness of several to several hundred μm. However, the thickness of the heat insulating material 34 may be outside the range of several to several hundred μm. Also, according to the JIS (Japanese Industrial Standards) packaging terms, a thin plastic material with a thickness of 250 μm or more is defined as a sheet, and a film-like plastic material with a thickness of less than 250 μm is defined as a film. However, in this application, the heat insulating material 34 (the second heat insulating material) is not distinguished by its thickness, and even a plastic material with a thickness within the category of a film is generically referred to as a sheet.

[0070] In the portable heat dissipation mat 1 with a three-side structure, as shown in FIGS. 4 to 8, the main body 5 is in a mode that can be reversibly deployed or assembled. Both the first side portion 31 and the second side portion 32 are each formed in a rectangular shape by a set of sides including the first side 30A with respect to the long side (the side along the left-right direction in FIGS. 4 and 5), and another set of sides including the second side 30B with respect to the short side (the side along the up-down direction in FIGS. 4 and 5). As shown in FIGS. 1 and 4 to 8, in the state where the main body 5 is deployed, at least the first sides 30A of the first side portion 31 and the second side portion 32, or at least the second sides 30B of the first side portion 31 and the second side portion 32 are connected, and at least one side of the four sides forming the second side portion 32 is connected to the third side portion 33.

[0071] In the state where the main body 5 is assembled, the accommodation portion 35 is formed between either one of the first side portion 31 or the third side portion 33 and the second side portion 32. On the portable heat dissipation mat 1, among the first side portion 31, the second side portion 32, and the third side portion 33, in the state where the main body 5 is assembled, a fixing portion 40 (fixing means) that can be detachably connected to the portions that overlap each other in an opposed arrangement is provided on the main body 5. In this embodiment, the fixing portion 40 is a hook-and-loop fastener, but it is not limited to a hook-and-loop fastener as long as it can repeatedly connect or release the overlapping portions of the main body 5, and can be variously changed.

[0072] In addition, the main body 5 is provided with a gripping portion 45 (carrying assistance means) that assists a person in carrying it when carried. As shown in FIGS. 1 and 4 to 9, the gripping portions 45 are provided in a pair on the first side portion 31 and the second side portion 32 of the main body 5, and are formed in a manner of manually lowering the portable heat dissipation mats 1 and 1X.

[0073] Note that the carrying assistance means may be, instead of the gripping portion 45, an opening portion 46 in which the inside of the main body 5 is partially opened as shown in FIG. 11. FIG. 11 is an explanatory view schematically showing a main part of the portable heat dissipation mat according to a modified example of the embodiment. By gripping the opening portion 46 by hand, the portable heat dissipation device according to the present invention is easy to carry.

[0074] In addition, the carrying assistance means may be, for example, a shoulder belt, a shoulder strap, etc. that can be freely attached to and detached from the main body.

[0075] Next, the specific configuration of the three-side structure portable heat dissipation mat 1 will be described with reference to FIGS. 1 and 4 to 8. When the three-side structure portable heat dissipation mat 1 is configured in the first assembly structure, as shown in FIG. 4, in the assembly procedure according to the first example, with respect to the main body 5 in the unfolded state, first, the heat storage material pack 4 is placed on one end surface 32a of the second side portion 32. After that, one end surface 33a of the third side portion 33 folded back toward the heat storage material pack 4 is brought into contact with the heat storage material pack 4, and the first fixed-side fixing portion 41A of the fixing portion 40 on one end surface 32a of the second side portion 32 and the first detachable-side fixing portion 41B of the fixing portion 40 on one end surface 33a of the third side portion 33 are fixed. Next, the first side portion 31 is folded back with one end surface 31a of the first side portion 31 facing the other end surface 33b of the third side portion 33, and the second fixed-side fixing portion 42A of the fixing portion 40 on the other end surface 33b of the third side portion 33 and the second detachable-side fixing portion 42B of the fixing portion 40 on one end surface 31a of the first side portion 31 are fixed. Thus, the assembly of the portable heat dissipation mat 1 shown in FIG. 1(a) is completed.

[0076] Also, as shown in FIG. 7, in the assembly procedure according to the second example, in the main body 5 in the unfolded state, the first side portion 31 and the second side portion 32 are connected by the left side portion and the lower side portion in FIG. 7, while on the right side portion and the upper side portion, they are not connected to each other and are in an open state. The third side portion 33 is connected to the left side portion of the second side portion 32 in FIG. 7, while it is not connected to the right side portion and the upper and lower side portions. First, the heat storage material pack 4 is stored in the storage portion 35 between one end surface 32a of the second side portion 32 and one end surface 31a of the first side portion 31. After that, as shown in FIG. 7(b), the third side portion 33 folded back at the joint with the second side portion is accommodated between the heat storage material pack 4 in the storage portion 35 and one end surface 31a of the first side portion 31. Thus, the assembly of the portable heat dissipation mat 1 shown in FIG. 1(a) is completed.

[0077] Also, as shown in FIG. 8, in the assembly procedure according to the third example, in the main body 5 in the unfolded state, the third side portion 33 is connected to the left side portion and the lower side portion of the second side portion 32 in FIG. 8(a), while on the right side portion and the upper side portion, they are not connected to each other and are in an open state. The heat storage material pack 4 is stored in the storage portion 35 between one end surface 32a of the second side portion 32 and one end surface (one end surface 33a) which is the back surface of the other end surface 33b of the third side portion 33, and the first fixed-side fixing portion 41A of the fixing portion 40 on one end surface 32a of the second side portion 32 and the first detachable-side fixing portion 41B of the fixing portion 40 on one end surface of the third side portion 33 are fixed. Next, the first side portion 31 is folded back with one end surface 31a of the first side portion 31 facing the other end surface 33b of the third side portion 33, and the second fixed-side fixing portion 42A of the fixing portion 40 on one end surface 31a of the first side portion 31 and the second detachable-side fixing portion 42B of the fixing portion 40 on the other end surface 33b of the third side portion 33 are fixed. Thus, the assembly of the portable heat dissipation mat 1 shown in FIG. 1(a) is completed.

[0078] Next, the case where the portable heat dissipation mat 1 with a three-side structure is configured in the second assembly structure will be described. As shown in FIG. 5, in the assembly procedure according to the first example, with respect to the main body 5 in the unfolded state, the first side portion 31 is folded back toward the heat storage material pack 4 placed on one end surface 32a of the second side portion 32, and its one end surface 31a is brought into contact with the heat storage material pack 4, and the first fixed-side fixing portion 41A of the fixing portion 40 on the one end surface 32a of the second side portion 32 and the first detachable-side fixing portion 41B of the fixing portion 40 on the one end surface 31a of the first side portion 31 are fixed. Next, the third side portion 33 is folded back with its one end surface 31a facing the other end surface 33b of the first side portion 31, and the second fixed-side fixing portion 42A of the fixing portion 40 on the other end surface 31b of the first side portion 31 and the second detachable-side fixing portion 42B of the fixing portion 40 on the one end surface 33a of the third side portion 33 are fixed. Thus, the assembly of the portable heat dissipation mat 1 shown in FIG. 1(a) is completed.

[0079] Also, as shown in FIG. 6, in the assembly procedure according to the second example, with respect to the main body 5 in the unfolded state, the first side portion 31 and the second side portion 32 are connected by the right side portion and the lower side portion in FIG. 6, while on the left side portion and the upper side portion, they are not connected to each other and are in an open state. The third side portion 33 is connected by the right side portion of the second side portion 32 in FIG. 6, while it is not connected on the left side portion and the upper and lower side portions. As shown in FIG. 6(b), first, the heat storage material pack 4 is stored in the accommodation portion 35 between the one end surface 32a of the second side portion 32 and the one end surface 31a of the first side portion 31. After that, as shown in FIG. 6(a), the third side portion 33 is folded back with its one end surface 33a facing the other end surface 31b of the first side portion 31, and the first fixed-side fixing portion 41A of the fixing portion 40 on the other end surface 31b of the first side portion 31 and the first detachable-side fixing portion 41B of the fixing portion 40 on the one end surface 33a of the third side portion 33 are fixed. Thus, the assembly of the portable heat dissipation mat 1 shown in FIG. 1(a) is completed.

[0080] Next, the configuration of the portable heat dissipation mat 1X with two side structures will be described with reference to FIGS. 9 and 10. As shown in FIG. 9, in the main body 5 according to the first example, although the first side portion 31 and the second side portion 32 have an open upper side portion in FIG. 9, they are formed in a bottomed bag shape with three side portions other than the upper side portion connected. The accommodating portion 35 is between the first side portion 31 and the second side portion 32. As shown in FIG. 9(b), the heat storage material pack 4 is stored in the accommodating portion 35. Since the pair of gripping portions 45 attached to the main body 5 are provided with fixing portions 40 (the first fixed-side fixing portion 41A and the first detachable-side fixing portion 41B), after the heat storage material pack 4 is stored in the accommodating portion 35, the first fixed-side fixing portion 41A and the first detachable-side fixing portion 41B are fixed to close the upper side portion of the first side portion 31 and the second side portion 32. Thus, the heat storage material pack 4 is set in the main body 5, and the portable heat dissipation mat 1X can be used.

[0081] Next, as shown in FIG. 10, in the main body 5 according to the second example, although the first side portion 31 and the second side portion 32 have an open upper side portion in FIG. 10(a), they are formed in a bottomed bag shape with three side portions other than the upper side portion connected. A film-like heat insulating material 34 is laminated on the other end surface 31b of the first side portion 31. The second side portion 32 has a closing portion 37 that is longer than the first side portion 31 in the depth direction (the left-right direction in FIG. 10(b)).

[0082] The accommodating portion 35 is between the first side portion 31 with the heat insulating material 34 and the second side portion 32. As shown in FIG. 10, after the heat storage material pack 4 is stored in the accommodating portion 35, the closing portion 37 is folded back to the other end surface 31b side of the first side portion 31. Next, the first fixed-side fixing portion 41A of the fixing portion 40 on the other end surface 31b of the first side portion 31 and the first detachable-side fixing portion 41B of the fixing portion 40 on one end surface 32a of the closing portion 37 of the second side portion 32 are fixed to close the upper side portion of the first side portion 31 and the second side portion 32. Thus, the heat storage material pack 4 is set in the main body 5, and the portable heat dissipation mat 1X can be used.

[0083] Next, an evaluation test of the portable heat dissipation mat 1, 1X according to the present embodiment will be described. The applicant of the present application conducted an evaluation test on the portable heat dissipation mat 1, 1X according to the present embodiment for the purpose of verifying its significance. Specifically, in the evaluation test, the heat storage material pack 4 in the portable heat dissipation mat 1, 1X laid on the chair dissipates latent heat by the latent heat storage material composition 10. In order to confirm the heat dissipation loss escaping to the outside on the chair side as the body of a person in a sitting position is warmed, an in-flight experiment was conducted using an experimental heat dissipation mat corresponding to the portable heat dissipation mat 1 or the like (for its main components, the following names and symbols according to the portable heat dissipation mat 1 or the like are used as they are).

[0084] <Experimental method> FIG. 12 is a schematic view of the main part of the sample in the evaluation test of the portable heat dissipation mat according to Examples 1 to 3 and the comparative example, as seen from the thickness direction. (a) shows the sample according to the comparative example, (b) shows the sample according to Example 1, (c) shows the sample according to Example 2, and (d) shows the mat sample according to Example 3. In the evaluation test, as shown in FIG. 12, four types of samples with different structures of the main body 5 were prepared as experimental heat dissipation mats according to Examples 1 to 3 and the comparative example. Each sample was placed on a table regarded as a chair, and a load equivalent to a bag containing 500 g of water regarded as a person in a sitting position was applied on the sample, and a test was conducted to pseudo-model the situation where a person sits on the chair. Then, the heat dissipation loss of latent heat generated on the table (chair) side of the sample placed on the table was observed and compared for each of the four types of samples.

[0085] The sample according to the comparative example is an experimental heat dissipation mat using only the heat storage material pack 4, as shown in Fig. 12(a). The sample according to Example 1 is an experimental heat dissipation mat 1A(1) configured by sandwiching the heat storage material pack 4 between the second side portion 32 arranged on the body side and the first side portion 31 arranged on the chair side, as shown in Fig. 12(b). The sample according to Example 2 is an experimental heat dissipation mat 1B(1) configured by sandwiching the heat storage material pack 4 between the first side portion 31 arranged on the chair side by being laminated with the third side portion 33 and the second side portion 32 arranged on the body side, as shown in Fig. 12(c). The sample according to Example 3 is an experimental heat dissipation mat 1C(1) configured by sandwiching the heat storage material pack 4 between the first side portion 31 with a heat insulating material 34 arranged on the chair side by being laminated with the third side portion 33 and the second side portion 32 arranged on the body side, as shown in Fig. 12(d).

[0086] Before the start of the evaluation test, the samples according to Examples 1 to 3 and the comparative example were each subjected to a heat treatment in advance on the respective heat storage material packs 4 to store latent heat in the latent heat storage material composition 10 (latent heat storage material 11) in the heat storage material pack 4. The heat treatment on the heat storage material pack 4 was performed by simmering, and the heat storage material pack 4 was heated with hot water set at 70°C for about 1 hour. After heating, the heat storage material pack 4 was left standing on the table to cool, and since the latent heat storage material composition 10 maintained a liquid state in the heat storage material pack 4 cooled to room temperature, it was considered that the latent heat storage material composition 10 in the heat storage material pack 4 was a melt in a state where the storage of latent heat was completed.

[0087] <Common conditions for Examples 1 to 3 and the comparative example> · Heat storage material pack 4: The latent heat storage material composition 10 and the trigger piece 13 are accommodated in the accommodation member 20 · Latent heat storage material composition 10: A mixture of sodium acetate trihydrate (latent heat storage material 11) and glycerin <Common conditions for Examples 1 to 3> · The first side portion 31 and the second side portion 32; Formed of a polyethylene (PE) bubble cushioning material made of a resin sheet material having a three-layer structure · The first side portion 31; Arranged on the chair side (denoted as "chair side single layer (PE)" in Figs. 14 to 19) <Conditions for Example 2> · Lamination of the first side part 31 and the third side part 33; arranged with the third side part 33 facing the chair side (in FIGS. 16 to 19, denoted as "two layers on the chair side (PE, PE)") <Conditions of Example 3> · Heat insulating material 34; aluminum film · Lamination of the first side part 31 and the third side part 33 with the heat insulating material 34; arranged with the first side part 31 facing the chair side with the heat insulating material 34 interposed between it and the third side part 33 (in FIGS. 16 to 19, denoted as "two layers on the chair side (PE, aluminum + PE)")

[0088] Next, for Examples 1 to 3 and the comparative example as well, in accordance with the start of the evaluation test, with each trigger piece 13, the direction of the curved part was reversed from the outer surface side of the accommodating member 20 to release the supercooling phenomenon occurring in the molten liquid of the latent heat storage material composition 10. After that operation, all the samples were left standing on the table. Then, with a water-filled bag loaded on each sample, the time required until the heat release from the latent heat storage material composition 10 was completed was measured, and the temperature of the latent heat released from the latent heat storage material composition 10 was detected and measured with a thermocouple.

[0089] FIG. 13(b) is an explanatory diagram schematically showing the temperature measurement points of the sample in the evaluation test. The measurement points of the heat release temperature by the thermocouple are, as shown in FIG. 13(b), for the heat storage material pack 4, the first measurement site M1 on the upper surface, the second measurement site M2 on the lower surface, and for the experimental heat release mat 1, etc., the third measurement site M3 on the body side mat surface and the fourth measurement site M4 on the chair side mat surface. Note that the measurement points of the comparative example are only the first measurement site M1 and the second measurement site M2.

[0090] <Experimental results> The results of the evaluation tests are shown in FIGS. 14 to 19. FIG. 14 is a graph showing the relationship between the elapsed time after the start of the test and the heat dissipation temperature on the body side mat surface for the evaluation test of the portable heat dissipation mat according to Example 1 and the comparative example. A graph showing the relationship between the elapsed time after the start of the test and the heat dissipation temperature on the chair side mat surface is shown in FIG. 15. In the first comparison between the experimental heat dissipation mat of the comparative example shown in FIG. 12(a) and the experimental heat dissipation mat 1A of Example 1 shown in FIG. 12(b), as shown in FIGS. 14 and 15, in the state 0.5 (h) after the release operation of the supercooling phenomenon of the latent heat storage material composition 10, in the case of the comparative example, the latent heat temperature when starting to dissipate heat from the latent heat storage material composition 10 was 31.8 °C at the first measurement site M1 and 31.7 °C at the second measurement site M2, and both the first measurement site M1 and the second measurement site M2 were almost at the same temperature. In contrast, in the case of Example 1, the latent heat temperature when starting to dissipate heat from the latent heat storage material composition 10 was 35.8 °C at the first measurement site M1 and 37.4 °C at the second measurement site M2, which was about 4 to 6 °C higher than that of the comparative example.

[0091] FIG. 16 is a graph showing the results of the evaluation test of the portable heat dissipation mat according to Examples 1 to 3, showing the relationship between the elapsed time after the start of the test and the heat dissipation temperature on the body side mat surface. A graph showing the relationship between the elapsed time after the start of the test and the heat dissipation temperature on the chair side mat surface is shown in FIG. 17. For the experimental heat dissipation mats 1A to 1C of Examples 1 to 3 shown in FIGS. 12(b) to (d), as shown in FIG. 16, in the state 0.5 (h) after the release operation of the supercooling phenomenon of the latent heat storage material composition 10, as a second comparison, the heat dissipation temperature of the latent heat at the third measurement site M3 was 26.6 °C in the case of Example 1, 26.8 °C in the case of Example 2, and 26.1 °C in the case of Example 3, and all were almost the same. Also, in this state, as shown in FIG. 17, the heat dissipation temperature of the latent heat at the fourth measurement site M4 was 34.7 °C in the case of Example 1, 32.8 °C in the case of Example 2, and 28.2 °C in the case of Example 3.

[0092] Fig. 18 is a graph showing the relationship between the time elapsed since the start of the test and the temperature difference between the upper surface of the heat storage material pack and the body side mat surface, which is the result of the evaluation test of the portable heat dissipation mat according to Examples 1 to 3, and Fig. 19 is a graph showing the relationship between the time elapsed since the start of the test and the temperature difference between the lower surface of the heat storage material pack and the chair side mat surface. As a third comparison with the experimental heat dissipation mats 1A to 1C of Examples 1 to 3 shown in Figs. 12(b) to (d), as shown in Fig. 18, the difference between the heat dissipation temperature measured at the third measurement site M3 and the heat dissipation temperature measured at the first measurement site M1 measured 0.5 (h) after the operation to release the supercooling phenomenon of the latent heat storage material composition 10 was performed was -9.2 ° C. in Example 1, -10.8 ° C. in Example 2, and -13.7 ° C. in Example 3. Furthermore, as shown in FIG. 19, the difference between the heat dissipation temperature measured at the second measurement site M2 0.5 h after the operation to remove the supercooling phenomenon was taken as the reference temperature and the heat dissipation temperature measured at the fourth measurement site M4 was 2.7°C in Example 1, 5.6°C in Example 2, and 12.9°C in Example 3.

[0093] <Consideration> From the experimental results, in the case of the first comparison, in the experimental heat dissipation mat 1A of Example 1, the radiation temperature of the latent heat from the heat storage material pack 4 is about 4°C higher on the upper surface (first measurement site M1) and about 5°C higher on the lower surface (second measurement site M2) compared to the experimental heat dissipation mat of the comparative example. Furthermore, the radiation temperature of the latent heat is high in the experimental heat dissipation mat 1A until 3 hours have passed after the supercooling phenomenon release operation is performed on the experimental heat dissipation mat. This is because, in the experimental heat dissipation mat of the comparative example, the heat storage material pack 4 is not protected by a member having a heat retention function, and the radiated latent heat is in a state where it is easily cooled by the outside air. In contrast, in the experimental heat dissipation mat 1A, the heat storage material pack 4 is covered with the first side portion 31 and the second side portion 32 formed of polyethylene bubble cushioning material, so that the heat dissipation due to latent heat from the heat storage material pack 4 is suppressed, and the experimental heat dissipation mat 1A becomes a heating device with improved heat retention of the heat storage material pack 4. Therefore, in the experimental heat dissipation mat 1A, even if the latent heat continues to be dissipated after the supercooling phenomenon release operation is performed on the experimental heat dissipation mat, the heat dissipation temperature is thought to be maintained higher than in the comparative example.

[0094] As described above in the first comparison, in the experimental heat dissipation mat 1A, the heat storage material pack 4 is covered with the first side portion 31 and the second side portion 32 formed of a polyethylene bubble cushioning material, and heat dissipation due to latent heat from the heat storage material pack 4 is suppressed. In the second comparison, the second side portion 32 is a single layer in all of the experimental heat dissipation mats 1A to 1C. Therefore, after the operation to release the supercooling phenomenon is performed, the latent heat dissipation temperature at the third measurement site M3 is about 26°C in all cases, as shown in Figure 16. Even 0.5 (h) after the operation to release the supercooling phenomenon is performed, the dissipation temperature of the latent heat transferred to the body side is almost the same between the experimental heat dissipation mats 1A to 1C, and shows roughly the same temperature trend. On the other hand, as shown in Figure 17, the latent heat dissipation temperature at the fourth measurement site M4 is 34.7°C in Example 1, 32.8°C in Example 2, and 28.2°C in Example 3, which differ due to differences in the configuration of the heat-retaining material, such as the first side portion 31 placed on the chair side relative to the heat storage material pack 4.

[0095] That is, with respect to the heat storage material pack 4, in order to suppress the heat radiation loss of the latent heat that escapes to the outside on the desk (chair) side, in the second embodiment, in addition to the first side portion 31 provided in the first embodiment, a third side portion 33 formed of a polyethylene foam buffer material is provided in the same manner as the first side portion 31. Therefore, the experimental heat radiation mat 1B is a heating tool in a form that covers the chair side of the heat storage material pack 4 with a heat insulation member having a two-layer structure formed by the first side portion 31 and the third side portion 33 formed of a polyethylene foam buffer material. It is considered that this is because the latent heat released from the heat storage material pack 4 can be suppressed from escaping to the outside on the chair side. In the third embodiment, a heat insulation material 34 which is an aluminum film is laminated on the first side portion 31 provided in the first embodiment. Therefore, the experimental heat radiation mat 1C is a heating tool in a form that covers the chair side of the heat storage material pack 4 with a heat insulation member having a three-layer structure formed by the first side portion 31 formed of a polyethylene foam buffer material, the heat insulation material 34 laminated thereon, and the third side portion 33. It is considered that this is because the latent heat released from the heat storage material pack 4 can be suppressed from escaping to the outside on the chair side even more than the experimental heat radiation mat 1B of the second embodiment.

[0096] Also, based on the considerations in the second comparison, in the third comparison, as shown in FIG. 19, the experimental heat radiation mat 1C of the third embodiment, the experimental heat radiation mat 1B of the second embodiment, and the experimental heat radiation mat 1A of the first embodiment are in this order excellent in heat insulation of the heat storage material pack 4, and it can be seen that the heat radiation to the chair side can be effectively suppressed in this order with respect to the latent heat of the heat storage material pack 4. And as shown in FIG. 18, it can be seen that the heat storage material pack 4 is effectively radiating heat to the body side while suppressing the heat radiation of the latent heat to the chair side.

[0097] Next, the operation and effects of the portable heat radiation mats 1 and 1X according to the present embodiment will be described.

[0098] The portable heat dissipation mat 1, 1X according to this embodiment has a heat storage material pack 4 capable of dissipating the generated heat and a main body 5 formed in a portable manner. In the portable heat dissipation applicator that releases heat from the heat storage material pack 4 disposed in the accommodation part 35 of the main body 5 to a heat supply destination, the heat storage material pack 4 is formed in a plate shape, the main body 5 is formed in a flat bag shape including a first side part 31 and a second side part 32 that can be arranged opposite to each other, and the heat storage material pack 4 is freely stored or taken out in the accommodation part 35 provided adjacent to the second side part 32 in a state where the second side part 32 and the first side part 31 are arranged in a laminated state. In a state where the heat storage material pack 4 is stored in the accommodation part 35 and heat is dissipated, the first side part 31 is configured to include at least one or more bubble cushioning materials so that heat from the heat storage material pack 4 is less likely to be transferred to the outside from the other end surface 31b of the first side part 31 on the side separated from the heat storage material pack 4 compared to the second side part 32 side sandwiching the heat storage material pack 4, or is a heat dissipation heat insulation part 3 configured to include at least a bubble cushioning material in a state where a sheet-like heat insulation material 34 having heat insulation properties is laminated.

[0099] Due to this feature, for example, when a person sits on a bench in an outdoor facility such as a sports game or an outdoor event and enjoys watching for a long time, or when sitting on a park bench to relax, etc., when the person sits on a chair or the like via the portable heat dissipation mat 1, 1X with the heat dissipation heat insulation part 3 in contact with the seating surface or backrest of the chair or the like, among the heat generated by the heat storage material pack 4, the heat dissipation loss that transfers toward the seating surface or backrest of the chair or the like can be suppressed by the heat dissipation heat insulation part 3. Therefore, the portable heat dissipation mat 1, 1X is configured in a manner that enhances the heat retention property by suppressing the useless heat dissipation loss to the chair or the like with respect to the heat dissipation from the heat storage material pack 4. As a result, the heat released from the heat storage material pack 4 transfers to the second side part 32 arranged on the body side while maintaining a higher temperature for a longer time as shown in FIG. 19 because the useless heat dissipation loss is suppressed in the total heat capacity that can be dissipated by the heat storage material pack 4.

[0100] Therefore, the portable heat dissipation mat 1, 1X according to this embodiment has the excellent effect of suppressing heat loss at the place where it is brought and being able to continuously provide the required heat to the user.

[0101] In addition, in the portable heat dissipation mat 1, 1X of this embodiment, when the heat storage material pack 4 is stored in the storage section 35 and heat is dissipated, the second side section 32 has load-bearing characteristics at least equal to or greater than those of the first side section 31, so that the heat of the heat storage material pack 4 is more easily retained on the second side section 32 side that is spaced apart from the heat storage material pack 4 than on the first side section 31 side that sandwiches the heat storage material pack 4. This is characterized in that the second side section 32 has heat dissipation and heat transfer section 2 made of bubble cushioning material that reduces the amount of elastic deformation caused by a load.

[0102] Due to this feature, when heat dissipation from the heat storage material pack 4 is started and the operation to release the supercooling phenomenon in the portable heat dissipation mat 1, 1X is completed, the heat dissipation from the heat storage material pack 4 is limited to a drop of, for example, about 1°C, and the heat can be continuously transferred to the heat dissipation heat transfer section 2 for a long period of time of more than four hours, as illustrated in Fig. 16. Furthermore, as illustrated above, when a person sits on a bench or chair in a cold outdoor facility to enjoy watching a game, if the portable heat dissipation mat 1, 1X is placed on the chair or the like and sits down, the portable heat dissipation mat 1, 1X can comfortably and effectively warm the body of the person in the seated position to a temperature of, for example, about 20-40°C by the heat dissipation from the heat storage material pack 4 while watching the game.

[0103] Moreover, the portable heat dissipation mat 1, 1X according to this embodiment is characterized in that the heat insulating material 34 is formed in close contact with the surface of the bubble cushioning material.

[0104] Due to this feature, the heat insulating material 34 is laminated on the surface of the first side portion 31 (one side of the one end face 31a or the other end face 31b, or both sides of the one end face 31a and the other end face 31b) with a thickness of only a few to several hundred μm. Only in this way, the heat radiation and heat insulation part 3 can effectively suppress the wasteful heat radiation loss to the chair side and other sides with respect to the heat radiation from the heat storage material pack 4. For the heat radiation and heat transfer part 2, the heat radiation from the heat storage material pack 4 can be transferred to the body of a person in a sitting posture while maintaining a higher temperature. Specifically, as compared with the case of the first side portion 31 alone, as illustrated in FIG. 19, the maximum temperature difference between the second measurement site M2 and the fourth measurement site M4 is about 10 °C, and the wasteful heat radiation loss to the chair side and other sides can be suppressed by the heat radiation and heat insulation part 3. Therefore, as illustrated in FIG. 16, in the heat radiation and heat transfer part 2, the heat storage material pack 4 can continuously radiate heat while suppressing the temperature drop over time within 1 °C for a long time of more than 4 hours and maintaining a comfortable temperature for the body of a person in a sitting posture.

[0105] Also, in the portable heat radiation mat 1, 1X according to the present embodiment, the main body 5 is in a mode that can be reversibly deployed or assembled. On the opposite side of the second side portion 32 sandwiching the heat storage material pack 4, there is a third side portion 33 that can be arranged adjacent to the first side portion 31. The third side portion 33 is made of a bubble cushioning material. Both the first side portion 31 and the second side portion 32 are each formed in a rectangular shape formed by one set of sides including the first side 30A and the other set of sides including the second side 30B. In the state where the main body 5 is deployed, at least the first sides 30A of the first side portion 31 and the second side portion 32, or at least the second sides 30B of the first side portion 31 and the second side portion 32 are connected. Among the four sides forming the second side portion 32, at least one side is connected to the third side portion 33. In the state where the main body 5 is assembled, the accommodating portion 35 is formed between either the first side portion 31 or the third side portion 33 and the second side portion 32.

[0106] Due to this feature, when carrying the portable heat dissipation mat 1, 1X to the place of use and using it, since the main body 5 can be reversibly deployed or assembled, the heat storage material pack 4 can be easily stored in and taken out from the storage part 35 of the main body 5. In particular, when the heat source in the heat storage material pack 4 is the latent heat storage material composition 10, when storing latent heat with the latent heat storage material composition 10, the heat storage material pack 4 may be taken out from the storage part 35 of the main body 5. Therefore, in the case of the latent heat storage material composition 10 that frequently repeats the heat storage and heat dissipation cycles multiple times, if the heat storage material pack 4 can be easily stored in and taken out from the storage part 35 of the main body 5, the usability of the portable heat dissipation mat 1, 1X will be improved.

[0107] Further, in the portable heat dissipation mat 1, 1X according to the present embodiment, among the first side part 31, the second side part 32, and the third side part 33, in a state where the main body 5 is assembled, a fixing part 40 that can be detachably connected is provided on the main body 5 at a portion that overlaps in an opposing arrangement with each other.

[0108] Due to this feature, after the main body 5 is assembled, the first side part 31, the second side part 32, and the third side part 33 can be connected at the overlapping portion by the fixing part 40. Therefore, even when the portable heat dissipation mat 1, 1X is in use, the heat storage material pack 4 stored in the storage part 35 can be prevented from coming off the main body 5, and the arrangement state stored between the first side part 31 and the second side part 32 can be maintained.

[0109] Further, in the portable heat dissipation mat 1, 1X according to the present embodiment, the heat storage material pack 4 is characterized by being foldable.

[0110] Due to this feature, when carrying the portable heat dissipation mat 1, 1X to the place of use, the heat storage material pack 4 can be made compact and carried. Therefore, even if the heat storage material pack 4 is separately configured from the main body 5, it can be easily stored in a storage such as a handbag or a tote bag, and can be carried to the place of use without any particular difficulty during movement.

[0111] In addition, in the portable heat dissipation mats 1 and 1X according to the present embodiment, a heater 50 for heating the heating element (heat storage material pack 4) is provided. The heater 50 is a sheet-shaped carbon heater that is in surface contact with the heat storage material pack 4 to heat the latent heat storage material composition 10 (latent heat storage material 11).

[0112] Due to this feature, the heat storage material pack 4 has an operation feeling similar to that of charging a mobile phone used daily. It is heated by the heater 50. As illustrated in FIG. 13, the entire latent heat storage material composition 10 in the heat storage material pack 4 can be heated with a uniform temperature distribution, and after energizing the heater 50, the latent heat storage material composition 10 can be brought into a state where the latent heat storage is completed, for example, in about 3 hours. In particular, when it is desired to heat two heat storage material packs 4 used in the portable heat dissipation mats 1 and 1X and a spare heat storage material pack 4 thereof, as illustrated in FIG. 13, the heater 50 is sandwiched between the two heat storage material packs 4, and the two heat storage material packs 4 can be heated by the heater 50 simultaneously. Therefore, two heat storage material packs 4 can be heated in the heating time of one heat storage material pack 4, and the latent heat can be efficiently stored in the respective latent heat storage material compositions 10.

[0113] In addition, in the portable heat dissipation mats 1 and 1X according to the present embodiment, the heating element is a heat storage material pack 4 that is filled without leakage into the internal space 20S of the housing member 20 with a latent heat storage material 11 (latent heat storage material composition 10) that stores or dissipates heat by utilizing the inflow and outflow of latent heat accompanying a phase change.

[0114] Due to this feature, the latent heat storage material composition 10 can temporarily store the heat provided by the heater 50 in the latent heat storage material 11, and then release the latent heat stored in the latent heat storage material 11 at the place where the portable heat radiation mat 1, 1X is used. The cycle of heat storage and its heat release can be repeatedly used multiple times. Also, in the portable heat radiation mat 1, 1X, since the heat release temperature by the heat storage material pack 4 varies depending on the constituent components of the latent heat storage material composition 10, by filling the selected constituent component of the latent heat storage material composition 10 into the accommodating member 20 according to the desired heat release temperature, the heat storage material pack 4 can be configured according to the temperature range to be heated (or cooled).

[0115] Also, in the portable heat radiation mat 1, 1X according to the present embodiment, it is characterized in that a flow regulation portion 22 for regulating the flow of the melt of the latent heat storage material 11 is provided in the internal space 20S of the accommodating member 20.

[0116] Due to this feature, especially when carrying the portable heat radiation mat 1, 1X to the place of use or when storing it without using the portable heat radiation mat 1, 1X, etc., when the heat storage material pack 4 is in a hanging posture downward from above and the latent heat storage material composition 10 is in a molten state, it is possible to suppress the molten latent heat storage material composition 10 from being biased downward in the internal space 20S of the accommodating member 20 by the flow regulation portion 22. As a result, in the heat storage material pack 4, even when the latent heat storage material composition 10 undergoes a phase change from melting (liquid phase state), the latent heat storage material composition 10 in the heat storage material pack 4 is likely to solidify (solid phase state) in a manner that avoids unevenness throughout its thickness (the distance along the vertical direction in Fig. 2(b)). Therefore, based on the heat release of the latent heat generated when the latent heat storage material composition 10 undergoes a phase change to a solid phase during the use of the portable heat radiation mat 1, 1X, the heat released from the heat storage material pack 4 can be transferred to the second side portion 32 in a more uniform distribution and temperature state.

[0117] Also, in the portable heat radiation mat 1, 1X according to the present embodiment, it is characterized in that the latent heat released from the latent heat storage material 11 is the thermal heat HT within the temperature range of 20°C or higher and 90°C or lower.

[0118] Due to this feature, when a person sits on a bench or chair in an outdoor facility in a cold state and enjoys watching a game through the portable heat dissipation mats 1, 1X, the portable heat dissipation mats 1, 1X can effectively and comfortably warm the body of the person in the sitting posture at a temperature of about 25 to 30 °C by dissipating heat from the heat storage material pack 4.

[0119] Moreover, the portable heat dissipation mats 1, 1X according to the present embodiment are characterized in that the main body 5 is provided with a gripping portion 45 that assists a person in carrying them when carried.

[0120] Due to this feature, when a person uses the portable heat dissipation mats 1, 1X at the place of use, the burden on the person can be reduced by carrying the portable heat dissipation mats 1, 1X using the gripping portion 45.

[0121] As described above, the present invention has been described in accordance with Examples 1 to 3 of the embodiment and the comparative example. However, the present invention is not limited to Examples 1 to 3 of the above embodiment, and can be appropriately modified and applied without departing from the gist thereof.

[0122] For example, in the embodiment, the first side portion 31 to the third side portion 33 are formed of a bubble cushioning material made of a resin sheet material having a three-layer structure. However, the bubble cushioning material may have a two-layer structure made of a resin sheet material, with one side layer being flat and the other layer having a hollow air filling portion formed in a cylindrical or hexagonal shape and arranged geometrically and regularly with adjacent ones intermittently spaced apart.

[0123] Also, in the embodiment, the main component of the latent heat storage material 11 is sodium acetate trihydrate. However, the main component of the latent heat storage material is not limited to the present embodiment, and may be, for example, a substance forming an inorganic salt hydrate, and various modifications are possible.

[0124] In the embodiment, the heating portable heat radiation mats 1 and 1X are set by adjusting the heat radiation temperature from the heat storage material pack 4 to around 30°C. However, the portable heat radiation device may be a cold insulation portable heat radiation mat that uses the heat released from the heat storage material pack (heating element) as cold heat within the temperature range of 0°C or higher and less than 20°C. Specifically, the main component of the latent heat storage material contained in the heat storage material pack may be, for example, an inclusion hydrate of tetra-n-butylammonium bromide (TBAB), or an inorganic salt hydrate such as a phosphate-based hydrate, an acetate hydrate, or a sulfate hydrate.

[0125] In the embodiment, the portable heat radiation mats 1 and 1X in which the first side portion 31 with the heat insulation material 34 is disposed in the heat radiation insulation portion 3 are given as examples. However, in the portable heat radiation device, the first heat insulation material in a state where the second heat insulation material is laminated may also be disposed on the second side portion.

[0126] In the embodiment, the portable heat radiation mats 1 and 1X in which the first heat insulation material used for the first side portion 31, the second side portion 32, etc. is a bubble buffer material are given as examples. However, the first heat insulation material constituting the portable heat radiation device is not limited to the embodiment. As described above, for example, it can be variously changed as long as it is a plate-shaped foam material made of a resin such as polyethylene (PE), polystyrene (PS), polypropylene (PP), polyurethane (PU), etc., or a plate-shaped rubber member, etc., which has heat insulation properties, is lightweight to the extent that it does not cause particular difficulties during carrying, and has load-bearing properties.

Explanation of Reference Numerals

[0127] 1, 1X Portable heat radiation mat (portable heat radiation device) 2 Heat radiation heat transfer portion 3 Heat radiation insulation portion 4 Heat storage material pack (heating element, heat storage material pack) 5 Main body 11 Latent heat storage material 20 Accommodating member 20S Internal space 22 Flow control section 30A First side (one set) 30B Second side (the other set) 31 First side portion 31b Other end face of the first side portion (end face of the first side portion) 32 Second side portion 33 Third side portion 34 Heat insulating material (second heat insulating material) 35 Accommodating section 40 Fixing section (fixing means) 41A First fixed side fixing part (fixing means) 41B First detachable side fixing part (fixing means) 42A Second fixed side fixing part (fixing means) 42B Second detachable side fixing part (fixing means) 45 Gripping section (carrying assistance means) 50 Heater (heating means)

Claims

1. A portable heat radiation applicator having a heating element capable of dissipating generated heat and a main body formed in a portable manner, and discharging heat from the heating element disposed in the accommodating portion of the main body to a heat-providing destination. In the portable heat radiation applicator, the heating element is formed in a plate shape; the main body is formed in a flat bag shape including a first side portion and a second side portion that can be arranged to face each other, and the heating element is freely stored or taken out in a state where the second side portion and the first side portion are arranged in a laminated state, in the accommodating portion provided adjacent to the second side portion; in a state where the heating element is stored in the accommodating portion and heat is dissipated, the first side portion is a heat radiation heat insulation portion configured to include at least one or more first heat insulation materials, or the first side portion is a heat radiation heat insulation portion configured to include at least the first heat insulation material in a state where a second heat insulation material in a sheet shape having heat insulation properties is laminated, so that heat of the heating element is less likely to be transferred to the outside from an end surface of the first side portion on a side separated from the heating element, compared to the second side portion side sandwiching the heating element; the first side portion is a heat radiation heat insulation portion configured to include at least the first heat insulation material in a state where a second heat insulation material in a sheet shape having heat insulation properties is laminated; A portable heat radiation applicator characterized by the above.

2. In the portable heat radiation applicator according to Claim 1, in a state where the heating element is stored in the accommodating portion and heat is dissipated, the second side portion is a heat radiation heat transfer portion configured with the first heat insulation material having at least equivalent or higher load-bearing characteristics compared to the first side portion side and suppressing an elastic deformation amount accompanying a load, so that heat of the heating element is more likely to be kept warm on the second side portion side on a side separated from the heating element, compared to the first side portion side sandwiching the heating element; A portable heat radiation applicator characterized by the above.

3. In the portable heat radiation applicator according to Claim 1, the first heat insulation material is a bubble cushioning material; A portable heat radiation applicator characterized by the above.

4. In the portable heat radiation applicator according to Claim 3, the second heat insulation material is formed in close contact with the surface of the bubble cushioning material; A portable heat radiation applicator characterized by the above.

5. In the portable heat radiation applicator according to Claim 1, the main body is in a reversibly deployable or assemblable manner, has a third side portion that can be arranged adjacent to the first side portion on the opposite side of the second side portion sandwiching the heating element, and the third side portion is made of a bubble cushioning material; both the first side portion and the second side portion are each formed in a rectangular shape formed by one set of sides including a first side and another set of sides including a second side; In the state where the main body is deployed, at least the first sides of the first side portion and the second side portion, or the second sides of the first side portion and the second side portion are connected, and among the four sides forming the second side portion, at least one side is connected to the third side portion. In the state where the main body is assembled, the accommodating portion is formed between either one of the first side portion or the third side portion and the second side portion. A portable heat dissipation device characterized by the above.

6. In the portable heat dissipation device according to claim 5, Among the first side portion, the second side portion, and the third side portion, fixing means that can be detachably connected is provided on the main body for the portions that overlap in an opposing arrangement with each other in the state where the main body is assembled. A portable heat dissipation device characterized by the above.

7. In the portable heat dissipation device according to claim 1, The heating element is foldable. A portable heat dissipation device characterized by the above.

8. In the portable heat dissipation device according to claim 1, The heating element is a heat storage material pack in which a latent heat storage material that stores or dissipates heat by utilizing the inflow and outflow of latent heat accompanying a phase change is filled without leakage in the internal space of the accommodating member. A portable heat dissipation device characterized by the above.

9. In the portable heat dissipation device according to claim 8, A flow regulation portion for regulating the flow of the melt of the latent heat storage material is provided in the internal space of the accommodating member. A portable heat dissipation device characterized by the above.

10. In the portable heat dissipation device according to claim 8, Heating means for heating the heating element is provided, The heating means is a sheet-like heater that heats the latent heat storage material in surface contact with the heat storage material pack. A portable heat dissipation device characterized by the above.

11. In the portable heat dissipation device according to claim 10, The heating means is a carbon heater. A portable heat dissipation device characterized by the above.

12. In the portable heat dissipation device according to claim 8, The latent heat released from the latent heat storage material is warm heat in a temperature range of 20°C or higher to 90°C or lower, or cold heat in a temperature range of 0°C or higher to less than 20°C. A portable heat dissipation device characterized by the above.

13. In the portable heat dissipation device according to any one of claims 1 to 12, Carrying assistance means for assisting a person in carrying the device during carrying is provided on the main body. A portable heat dissipation device characterized by the above.

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