First-use cooling device

Abstract

To provide a neck cooling device that immediately delivers the coldness of ice to the neck and allows the cooling effect to be sustained for a long period of time. [Solution] The neck cooling device 1 is composed of a U-shaped ice storage bag 2 that has a roughly U-shape and is divided into two prongs so that ice can be stored inside and worn around the user's neck. The inner circumferential surface portion 2a of the U-shaped ice storage bag 2, which faces the neck when worn, is formed of a heat dissipation sheet 3 that can release the cold air of the ice to the outside, and the outer circumferential surface portion 2b, which faces outward when worn, is formed of a cooling sheet 4 that can insulate against heat from the outside.

Description

TECHNICAL FIELD

[0001] The present invention relates to a neck cooling device using ice. BACKGROUND ART

[0002] Patent Document 1 discloses a neck cooling device that has a substantially U-shape bifurcated into two parts so as to contain ice inside and be worn around a user's neck. The neck cooling device is composed of an inner bag member for containing ice and an outer bag member for accommodating the inner bag member inside, the inner bag member is made of a flexible synthetic resin having waterproof properties, and the outer bag member is made of fabric. PRIOR ART DOCUMENTS PATENT DOCUMENTS

[0003] PATENT DOCUMENT 1 Japanese Utility Model Registration No. 3245519 SUMMARY OF THE INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION

[0004] Since the neck cooling device is composed of two bag members, the inner bag member and the outer bag member, there has been a concern that the user feels the cold of ice gradually against the neck, making it difficult to immediately feel the cold of ice when worn. Especially in recent summers, extremely hot days and severe heat days have increased, and a neck cooling device that allows the user to immediately feel the cold of ice when worn is desired.

[0005] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a neck cooling device that allows the cold of ice to be immediately transmitted to the neck and enables the cooling effect to be maintained for a long time. MEANS FOR SOLVING THE PROBLEMS

[0006] A neck cooling device according to a first aspect of the present invention is It consists of a U-shaped ice storage bag that has a roughly U-shape split into two prongs so that ice is contained inside and it can be worn around the user's neck. The aforementioned U-shaped ice storage bag is The inner surface that faces the neck when worn is formed with a heat dissipation sheet that can release icy cold air to the outside. The outer surface that faces outward when installed is formed with a cooling sheet that can insulate against heat from the outside. 、 The heat dissipation sheet is formed from a sheet of TPU (thermoplastic polyurethane) or TPE (thermoplastic elastomer) and is configured to be transparent or translucent. The aforementioned cooling sheet has a surface made of polyester fabric and a back surface made of PEVA (polyethylene vinyl acetate) or aluminum insulation sheet. The U-shaped ice storage bag is provided with an ice insertion section extending outward from the central outer circumference and having an opening for inserting ice. The inner surface of the ice insertion section is provided with a funnel-shaped inner bag attached to the opening. The funnel-shaped inner bag is made of a flexible waterproof sheet, and its diameter decreases towards the inside of the U-shaped ice storage bag, with an opening at the bottom. It has the necessary configuration.

[0008] Furthermore, the neck cooling device according to the second aspect of the present invention is It consists of a U-shaped ice storage bag that has a roughly U-shape split into two prongs so that ice is contained inside and worn around the user's neck. The aforementioned U-shaped ice storage bag is The inner surface facing the neck when worn is formed from a single-layer sheet made of TPU (thermoplastic polyurethane) or TPE (thermoplastic elastomer) to allow the cold air of ice to be released to the outside, and is made transparent or translucent. The outer surface that faces outward when installed is designed to provide insulation against heat from the outside. It is composed of a double-layered sheet, with the surface made of polyester fabric and the back made of TPU (thermoplastic polyurethane). The U-shaped ice storage bag is provided with an ice insertion section extending outward from the central outer circumference and having an opening for inserting ice. The inner surface of the ice insertion section is provided with a funnel-shaped inner bag attached to the opening. The funnel-shaped inner bag is made of a flexible waterproof sheet and has a structure that narrows in diameter towards the inside of the U-shaped ice storage bag, with an opening at the bottom.

[0010] The funnel-shaped inner bag is formed by joining the side edges of two waterproof sheets to create a bag shape. The opening at the bottom of the funnel-shaped inner bag is provided with projections on each of the two waterproof sheets that extend toward the inside of the U-shaped ice storage bag. Each of the aforementioned protruding pieces can be configured to overlap and form a valve function that closes the opening when the ice input section is folded.

[0011] Further, the neck cooling device according to the third aspect of the present invention is, configured by a U-shaped ice storage bag that has a substantially U-shape bifurcated so as to store ice inside and be worn around the user's neck, The U-shaped ice storage bag has an inner part that directly stores ice, and an outer part that is arranged outside the inner part and to which the inner part is joined on the inner side, and the inner peripheral surface part arranged around the neck facing the neck side when worn is made of a material capable of releasing the cold air of ice to the outside, and the outer peripheral surface part facing the outer side when worn is configured to include a material capable of insulating external heat, The entire inner part is formed of a TPU (thermoplastic polyurethane) sheet, and is configured to be transparent or translucent, The portion of the inner peripheral surface part in the outer part is formed of a TPU (thermoplastic polyurethane) sheet, and is configured to be transparent or translucent, The portion of the outer peripheral surface part in the outer part is, The surface is made of polyester fabric, and the back is made of a functional material sheet containing aluminum to reflect radiant heat. The functional material sheet is composed of an aluminum sheet in which an aluminum layer made of aluminum vapor deposition or aluminum foil is formed on the surface of a soft resin sheet, or an aluminum heat-shielding sheet in which an aluminum layer made of aluminum vapor deposition or aluminum foil is formed on the surface of a heat-insulating sheet made of a resin fiber layer, and a mesh fabric made of resin fibers is optionally formed on the surface of the aluminum layer. The aforementioned U-shaped ice storage bag has a roughly U-shaped main body that is divided into two parts, and an ice insertion part that is provided on the outer central part of the roughly U-shape of the main body, has an opening for inserting ice, and extends outward so as to be foldable. The portion of the main body in the exterior part is composed of the inner circumferential surface portion and the outer circumferential surface portion. The portion of the exterior part where the ice is inserted is made solely of polyester fabric, or the surface is made of polyester fabric and the back surface is made of a TPU (thermoplastic polyurethane) sheet. The interior part is formed in a bag shape from two sheets of TPU (thermoplastic polyurethane), and has ear portions on the outer circumference excluding the opening portion, which are formed by bonding or welding the two TPU sheets together, and part or all of these ear portions are joined to the exterior part. A belt member is sewn to the opening of the ice loading section together with the interior and exterior sections, and the sewn portion of the belt member is provided with a waterproof structure on the inner surface side of the interior section by attaching waterproof tape or welding.

[0013] In the neck cooling device of the third aspect, On the inner surface of the inner part at the ice charging portion, a funnel-shaped inner bag is provided so as to extend from the opening of the inner part toward the inner side of the inner part, The funnel-shaped inner bag is formed into a bag shape by joining the side edges of two flexible waterproof sheets, reduces in diameter toward the inner side of the inner part, and is provided with an opening at the bottom, At the opening, each of the two waterproof sheets is provided with a protruding piece extending toward the inner side of the inner part, Each of the protruding pieces can be configured to overlap by folding the ice charging portion to form a valve function portion that closes the opening. Effects of the Invention

[0014] According to the neck cooling device of the present invention, the U-shaped ice storage bag is configured so that the inner surface facing the neck when worn can release the cold air of the ice to the outside. Therefore, when the neck cooling device is worn around the neck, the coldness of the ice is immediately transmitted to the neck, allowing the wearer to quickly feel the coolness of the ice and obtain a feeling of coolness. Furthermore, the outer surface facing outward when worn around the U-shaped ice storage bag is configured so that it can insulate against heat from the outside. Therefore, even in high-temperature environments, it can insulate against heat from the outside, making it difficult for heat to be transmitted into the U-shaped ice storage bag and slowing down the melting of the ice, while effectively releasing the coldness of the ice from the inner surface of the U-shaped ice storage bag. Consequently, when the neck cooling device is worn around the neck, the coldness of the ice is immediately transmitted to the neck, and the cooling effect on the neck can be sustained for a long time. Thus, a neck cooling device that provides sufficient cooling effect as a measure against the heat is obtained.

[0015] Furthermore, since the inner surface of the U-shaped ice storage bag is made of transparent or semi-transparent material, the degree to which the ice inside the bag is melting can be easily checked visually. Therefore, the drainage of melted ice water and the replenishment of ice can be done at the appropriate time.

[0016] Furthermore, by providing a funnel-shaped inner bag attached to the opening of the ice input section on the inner surface, when ice is stored and the ice input section is folded to seal the opening, the funnel-shaped inner bag can also stop water from leaking out of the opening of the ice input section. This ensures that melted ice water does not leak out of the opening of the ice input section during use. When draining melted ice water from the opening of the ice input section, the force of the water flowing out causes the funnel-shaped inner bag to turn inside out and come out of the opening of the ice input section, and its funnel shape prevents splashing while allowing for smooth drainage. [Brief explanation of the drawing]

[0017] [Figure 1] This is a front view showing a neck cooling device according to Embodiment 1. [Figure 2] This is a partially cut-off end view showing the configuration of the heat dissipation sheet and the cooling sheet of a U-shaped ice storage bag. [Figure 3] This is a schematic diagram showing the funnel-shaped inner bag installed in the ice input section. [Figure 4] This is a schematic diagram showing the state of the funnel-shaped inner bag when draining water from a U-shaped ice storage bag. [Figure 5] This is a schematic diagram showing how to close the opening of the ice dispenser when using the ice. [Figure 6] This is a schematic diagram showing the neck cooling device of Embodiment 1 being worn around the neck by a user. [Figure 7] This is a front view showing a neck cooling device according to Embodiment 3. [Figure 8] This is a front view showing the interior of the U-shaped ice storage bag in the neck cooling device of Embodiment 3. [Figure 9] This is a partially cutaway schematic diagram showing the configuration of the outer casing of the U-shaped ice storage bag in the neck cooling device of Embodiment 3. [Modes for carrying out the invention]

[0018] Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in Figures 1 and 2, the neck cooling device 1 of Embodiment 1 is composed of a U-shaped ice storage bag 2 that has a roughly U-shape and is divided into two prongs so as to contain ice inside and be worn around the user's neck. The U-shaped ice storage bag 2 has an inner circumferential surface portion 2a that faces the neck when worn, which is formed of a heat dissipation sheet 3, and an outer circumferential surface portion 2b that faces outward when worn, which is formed of a cooling sheet 4. In other words, the U-shaped ice storage bag 2 is formed in a roughly U-shape based on the cooling sheet 4, and the inner circumferential surface portion 2a, which is the inner circumferential surface of the roughly U-shape, is formed of a heat dissipation sheet 3.

[0019] The heat dissipation sheet 3 on the inner circumferential surface 2a of the U-shaped ice storage bag 2 is made of a TPU (thermoplastic polyurethane) or TPE (thermoplastic elastomer) sheet, and the heat dissipation sheet 3 is made of a transparent or translucent material.

[0020] The TPU and TPE materials are highly flexible, waterproof, and durable. Furthermore, the TPU and TPE materials have excellent water vapor permeability, allowing the cold air from the U-shaped ice storage bag 2 to escape easily through the heat dissipation sheet 3. Therefore, by forming the inner circumferential surface 2a of the U-shaped ice storage bag 2, which faces the neck when worn, with TPU or TPE, the coldness of the ice can be directly transmitted to the neck when the neck cooling device 1 is worn around the neck. In addition, water from melted ice can be prevented from leaking out of the inner circumferential surface 2a of the U-shaped ice storage bag 2.

[0021] Since the TPU and TPE materials are transparent, the heat dissipation sheet 3, which is the inner circumferential surface 2a of the U-shaped ice storage bag 2, is made of a transparent or translucent sheet, allowing for easy visual confirmation of the degree of ice melting inside the U-shaped ice storage bag 2. Therefore, the water from the melted ice can be drained and the ice can be replenished at the appropriate time.

[0022] The insulating sheet 4 on the outer surface 2b of the U-shaped ice storage bag 2 is made of a sheet in which the back surface of a polyester fabric 4a is covered with a PEVA (polyethylene vinyl acetate) or aluminum lining 4b. For example, the insulating sheet 4 is formed by laminating a PEVA or aluminum sheet to the back surface of a polyester fabric sheet, or by coating it with PEVA or aluminum. On the outer surface 2b of the U-shaped ice storage bag 2, the polyester fabric 4a of the insulating sheet 4 is placed on the surface side, and the PEVA or aluminum lining 4b of the insulating sheet 4 is placed on the back side.

[0023] The aforementioned PEVA and aluminum have excellent cooling properties, as well as being waterproof and durable. Therefore, when the neck cooling device 1 is worn around the neck, the cooling sheet 4 insulates against heat from the outside, making it difficult for the ice in the U-shaped ice storage bag 2 to melt, and also allows the coldness of the ice to be effectively released from the heat dissipation sheet 3 on the inner circumference 2a of the U-shaped ice storage bag 2. In addition, it is possible to prevent the water from melting the ice from leaking out from the outer circumference 2b of the U-shaped ice storage bag 2. The polyester fabric 4a does not fade due to condensation even if it is colored, so the color of the polyester fabric 4a does not transfer to the user's clothes when the neck cooling device 1 is worn around the neck.

[0024] The insulating sheet 4 and the heat dissipation sheet 3 that form the U-shaped ice storage bag 2 are joined by sewing. Alternatively, the insulating sheet 4 and the heat dissipation sheet 3 may be joined by welding, adhesive, or welding. Waterproof tape 5 is applied to the joint between the insulating sheet 4 and the heat dissipation sheet 3 on the inner surface of the U-shaped ice storage bag 2, ensuring waterproofing to prevent water from leaking out of the joint. However, if sufficient waterproofing of the joint can be ensured by joining the insulating sheet 4 and the heat dissipation sheet 3 by welding, adhesive, or welding, the waterproof tape 5 may be omitted.

[0025] The insulating sheet 4 that forms the U-shaped ice storage bag 2 is formed by joining multiple insulating sheets 4 by sewing. In addition to sewing, the sheets of insulating sheet 4 may also be joined by welding, adhesive, or welding. Furthermore, each joint in the insulating sheet 4 is covered with waterproof tape 5 on the back side of the U-shaped ice storage bag 2 to ensure waterproofness so that water inside the U-shaped ice storage bag 2 does not leak out from the joint. Note that if sufficient waterproofness of the joint can be ensured by joining multiple insulating sheets 4 by welding, adhesive, welding, etc., the waterproof tape 5 may not be applied. The heat dissipation sheet 3 that forms the inner circumferential surface 2a of the U-shaped ice storage bag 2 is formed from a single heat dissipation sheet 3.

[0026] As described above, with the neck cooling device 1 of this embodiment 1, the inner circumferential surface portion 2a of the U-shaped ice storage bag 2 that faces the neck when worn on the neck is formed of a heat dissipation sheet 3. Therefore, when the neck cooling device 1 is worn on the neck, the coldness of the ice is immediately transmitted to the neck, allowing the wearer to quickly feel the coolness of the ice and obtain a cooling sensation. Furthermore, the outer circumferential surface portion 2b of the U-shaped ice storage bag 2 that faces outward when worn on the neck is formed of a cooling sheet 4. Therefore, even in high-temperature environments, it insulates against heat from the outside, making it difficult for the ice to melt, while effectively releasing the coldness of the ice from the inner circumferential surface portion 2a of the U-shaped ice storage bag 2. Consequently, when the neck cooling device 1 is worn on the neck, the coldness of the ice is immediately transmitted to the neck, and the cooling effect on the neck can be sustained for a long time. Thus, a neck cooling device 1 that fully satisfies the cooling effect as a measure against the heat is obtained.

[0027] The neck cooling device 1 of Embodiment 1 is provided with an ice insertion section 6 having an opening 6a for inserting ice at the approximately U-shaped central outer circumference of the U-shaped ice storage bag 2. The ice insertion section 6 is formed to extend outward so that it can be folded to close the opening 6a. Therefore, when using the device with ice stored inside, the ice insertion section 6 can be folded several times to close the opening 6a, preventing melted ice water from leaking out of the opening 6a of the ice insertion section 6.

[0028] As shown in Figure 3, a funnel-shaped inner bag 7 is provided on the inner surface of the ice input section 6, joined to the opening 6a by sewing or welding. In Figure 3, the front portion of the ice input section 6 in the U-shaped ice storage bag 2 is cut out to reveal the funnel-shaped inner bag 7. The funnel-shaped inner bag 7 is made of a flexible waterproof sheet, and its diameter decreases towards the inside of the U-shaped ice storage bag 2, with an opening 8 at the bottom. The waterproof sheet constituting the funnel-shaped inner bag 7 is made of, for example, TPU (thermoplastic polyurethane).

[0029] The funnel-shaped inner bag 7 is formed from two roughly trapezoidal waterproof sheets. The side edges 9 of these two waterproof sheets are joined and sealed by sewing, welding, welding, or adhesive to form a bag. The funnel-shaped inner bag 7 is arranged so that each side of the two waterproof sheets that form it faces the front and back sides of the U-shaped ice storage bag 2.

[0030] With the funnel-shaped inner bag 7 configured as described above, the diameter decreases towards the inside of the U-shaped ice storage bag 2, so that it can stop water from leaking out of the opening 6a of the ice input section 6. This ensures that melted ice water does not leak out of the opening 6a of the ice input section 6 during use. Furthermore, as shown in Figure 4, when draining melted ice water from the opening 6a of the ice input section 6, the force of the water flowing out causes the funnel-shaped inner bag 7 to turn inside out and exit the opening 6a of the ice input section 6, and its funnel shape prevents splashing, allowing for smooth drainage.

[0031] Furthermore, as shown in Figure 3, the opening 8 at the bottom of the funnel-shaped inner bag 7 is provided with arc-shaped projections 10a and 10b extending toward the inside of the U-shaped ice storage bag 2 on each of the two waterproof sheets forming the funnel-shaped inner bag 7. Each projection 10a and 10b overlaps when the ice input section 6 is folded, forming a valve function that closes the opening 8. With this configuration, the projections 10a and 10b, which act as valve functions, can close the opening 8 at the bottom of the funnel-shaped inner bag 7 to stop water from leaking out of the opening 6a of the ice input section 6 when in use, thus more reliably preventing water from melting ice from leaking out of the opening 6a of the ice input section 6 during use.

[0032] The neck cooling device 1 has a belt member 11 attached to the opening 6a of the ice insertion section 6, and buckles 12a and 12b are provided at the right and left ends of the belt member 11 that extends outward from the ice insertion section 6 (see Figure 1). As a result, as shown in Figures 5(a), 5(b), and 5(c), when the ice insertion section 6 is folded several times during use and the left and right buckles 12a and 12b are connected, a loop-shaped handle is formed by the belt member 11 (see Figure 5(c)).

[0033] Furthermore, the lengths of the left and right ends of the belt member 11 extending from the ice input section 6 are formed to be shorter than half the width of the ice input section 6. Therefore, when the left and right buckles 12a and 12b are connected, the right and left sides of the ice input section 6 are pulled together, causing the ice input section 6 to curl up (see Figure 5(c)). In this way, the curled-up ice input section 6 can be grasped by hand, and the fingers can be placed on the loop-shaped belt member 11, making it easy to hold the neck cooling device 1 containing the ice, and making it easy to put on and take off the neck.

[0034] The neck cooling device 1 has flat, string-like connecting members 13 attached to each of the two ends of a U-shaped ice storage bag 2, and snap buttons 14 are provided on the left and right connecting members 13 (see Figure 1). As shown in Figure 6, by wearing the neck cooling device 1 around the neck and connecting the connecting members 13 with the snap buttons 14, it is possible to prevent the neck cooling device 1 from shifting position.

[0035] Furthermore, the convex part 14a and concave part 14b of the snap button 14 are provided on the same side of the front or back surface of each connecting member 13, and the snap button 14 is connected by aligning the same sides of each connecting member 13 (see Figure 6). As a result, when the neck cooling device 1 is pulled, the connection of the snap button 14 is easily released, so that the neck is not pulled when the neck cooling device 1 is pulled.

[0036] (Embodiment 2) In Embodiment 2, the contents other than those described below have the same or equivalent configuration and effects as in Embodiment 1. The neck cooling device 1 according to Embodiment 2 is a U-shaped ice storage bag 2. The inner circumferential surface portion 2a that faces the neck when worn is formed of a single-layer sheet (3) made of TPU (thermoplastic polyurethane) sheet, and the outer circumferential surface portion 2b that faces outward when worn is formed of a double-layer sheet (4) in which the back surface of a polyester fabric 4a is covered with a TPU (thermoplastic polyurethane) lining 4b. With this configuration, by making the inner circumferential surface portion 2a that faces the neck when worn a single-layer sheet (3) made of TPU sheet, when the neck cooling device 1 is worn on the neck, the coldness of the ice is directly transmitted to the neck, allowing the wearer to quickly feel the coldness of the ice and obtain a cooling sensation. In addition, since TPU is permeable to water vapor, the cold air from the ice inside the U-shaped ice storage bag 2 can be easily released to the outside from the inner circumferential surface portion 2a.

[0037] Furthermore, by forming the outer peripheral surface 2b that faces outward when attached with a double-layered sheet (4) in which the back of the polyester fabric 4a is covered with a TPU lining 4b, heat from the outside is less likely to be transferred into the U-shaped ice storage bag 2 even in high-temperature environments, making it harder for the ice to melt, while effectively releasing the coldness of the ice from the inner peripheral surface 2a of the U-shaped ice storage bag 2. In particular, by forming the single-layered sheet (3) of the inner peripheral surface 2a with TPU, which is the same material as the lining 4b of the outer peripheral surface, the coldness of the ice can be released more effectively from the inner peripheral surface 2a of the U-shaped ice storage bag 2.

[0038] Therefore, when the neck cooling device 1 according to Embodiment 2 is worn on the neck, the coldness of the ice is immediately transmitted to the neck, and the cooling effect on the neck can be sustained for a long time.

[0039] The double-layered sheet (4) of the outer circumferential surface 2b can be formed by coating the back surface of a polyester fabric sheet with TPU, laminating a TPU sheet onto it, or bonding TPU sheets together. The sheet (4) of the outer circumferential surface 2b and the sheet (3) of the inner circumferential surface 2a that form the U-shaped ice storage bag 2 are joined by sewing, but they may also be joined by welding, adhesive, or welding. Alternatively, the U-shaped ice storage bag 2 may be formed entirely from a TPU sheet, with the polyester fabric sheet attached to the outer circumferential surface 2b by sewing, welding, adhesive, welding, or other means. The inner circumferential surface 2a may be formed from a single-layered sheet made of a TPE (thermoplastic elastomer) sheet that has water vapor permeability.

[0040] (Embodiment 3) In Embodiment 3, the contents other than those described below have the same or equivalent configuration and effects as those in Embodiments 1 and 2. As shown in Figure 7, in the neck cooling device 1A of Embodiment 3, the U-shaped ice storage bag 2 has a bifurcated, roughly U-shaped portion which serves as the main body portion 17, and an ice insertion portion 6 which is provided on the outer circumference of the central part of the roughly U-shape of the main body portion 17 and has an opening 6a for inserting ice and extends outward so as to be foldable. The main body portion 17 has an inner circumferential surface portion 2a that faces the neck when worn and an outer circumferential surface portion 2b that faces outward when worn. The U-shaped ice storage bag 2 also has an inner part 15 in which ice is directly contained and an outer part 16 which is positioned outside the inner part 15 and to which the inner part 15 is joined.

[0041] The interior section 15 is formed entirely of TPU (thermoplastic polyurethane) sheets in a bag shape and is transparent or translucent. Specifically, the interior section 15 is formed of two TPU (thermoplastic polyurethane) sheets in a bag shape, and as shown in Figure 8, two roughly U-shaped TPU sheets are overlapped and joined by adhesive or welding at the outer circumference excluding the opening 6a, and this joint, the ear portion 15a, is provided on the outer circumference excluding the opening 6a. Part or all of the ear portion 15a of the interior section 15 is joined to the exterior section 16 by sewing. Therefore, the waterproofness inside the interior section 15 is not impaired by the sewing of the exterior section 16 at the ear portion 15a. Note that the exterior section 17 and the ear portion 15a of the interior section 15 may be joined by welding, adhesive, welding, etc., in addition to sewing.

[0042] The inner circumferential surface portion 2a of the main body portion 17 of the outer casing portion 16 is formed from a TPU (thermoplastic polyurethane) sheet and is configured to be transparent or semi-transparent. Therefore, since the inner circumferential surface portion 2a of the U-shaped ice storage bag 2 is made of a TPU sheet for both the outer casing portion 16 and the inner casing portion 15, it is transparent and allows the cold air from the ice to be easily released to the outside.

[0043] The outer periphery 2b portion of the main body 17 of the outer casing 16 is constructed by placing a functional material sheet 4b containing aluminum to reflect radiant heat on the back of the polyester fabric 4a. Therefore, the outer periphery 2b of the U-shaped ice storage bag 2 allows the outer casing 16 to reflect radiant heat from the external environment, thereby suppressing heat transfer from the outside to the inside of the U-shaped ice storage bag 2 and making it more difficult for the ice to melt.

[0044] Therefore, when the neck cooling device 1A according to Embodiment 3 is worn on the neck, the coldness of the ice is immediately transmitted to the neck, and the cooling effect on the neck can be sustained for a long time.

[0045] As the exterior part 16 constituting the outer peripheral surface 2b of the main body part 17, the functional material sheet for the lining 4b of the polyester fabric 4a can be made of an aluminum sheet 18 (see Figure 9(a)) in which an aluminum layer 4b-1 is formed by laminating aluminum vapor deposition or aluminum foil onto the surface of a soft resin sheet 4b-2, as shown in Figure 9, or it can be made of an aluminum heat-shielding sheet 19 (see Figure 9(b)) in which an aluminum layer 4b-1 is formed by laminating aluminum vapor deposition or aluminum foil onto the surface of a heat-insulating sheet 4b-3 made of a resin fiber layer, and a mesh fabric 4b-4 made of resin fibers is formed on the surface of the aluminum layer 4b-1. The lining 4b of the functional material sheet also contributes to ensuring the shape retention of the outer peripheral surface 2b. It is preferable that the aluminum surface of the aluminum layer 4b-1 of the functional material sheet is arranged facing outward towards the fabric 4a side, as shown in Figure 9, and that no adhesive is applied to the surface of the aluminum layer 4b-1 (aluminum surface). This allows the aluminum surface to face directly towards sunlight, and the gloss of the aluminum surface is not suppressed by the adhesive, thus ensuring good radiant heat reflection performance.

[0046] According to the aluminum sheet 18, the aluminum layer 4b-1 reflects radiant heat from the outside, and the aluminum layer 4b-1 and the soft resin sheet 4b-2 retain the coldness of the ice inside, making it difficult for the ice to melt, while effectively releasing the coldness of the ice from the inner circumferential surface 2a of the U-shaped ice storage bag 2. According to the aluminum heat-shielding sheet 19, the aluminum layer 4b-1 reflects radiant heat from the outside, and the aluminum layer 4b-1 and the heat-insulating sheet 4b-3 enhance heat insulation, further retaining the coldness of the ice inside, making it difficult for the ice to melt, while effectively releasing the coldness of the ice from the inner circumferential surface 2a of the U-shaped ice storage bag 2. The mesh fabric 4b-4 of the aluminum heat-shielding sheet 19 can further enhance the shape retention of the backing fabric 4b. Note that the aluminum heat-shielding sheet 19 may also be configured without the mesh fabric 4b-4 on the surface.

[0047] As shown in Figure 9(c), the outer casing 16 that constitutes the ice input section 6 is made of a flexible sheet in which the back surface of a polyester fabric 4a is covered with a TPU (thermoplastic polyurethane) lining 4c. Therefore, because the ice input section 6 is highly flexible, it can be smoothly rolled up and folded while easily suppressing gaps and spaces inside the ice input section 6, and gaps and spaces are less likely to occur at the opening 6a of the ice input section 6, allowing the opening 6a to be sealed with a high degree of airtightness. Note that the outer casing 16 of the main body section 17 and the ice input section 6 may be made only of polyester fabric 4a without linings (4b, 4c).

[0048] A belt member 11 is sewn to the opening 6a of the ice input section 6 together with the inner section 15 and the outer section 16 (see Figure 7). The sewn portion between the inner section 15 and the outer section 16 has a waterproof structure in which waterproof tape 5 is attached or welded on the inner side. This waterproof structure ensures that when the ice input section 6 is folded, water from melted ice will not leak from the opening 6a of the ice input section 6 through the sewn portion between the inner section 15 and the outer section 16.

[0049] A funnel-shaped inner bag 7 is provided on the inner surface of the inner lining 15 in the ice input section 6, extending from the opening 6a of the inner lining 15 toward the interior side of the inner lining 15. The funnel-shaped inner bag 7 is formed into a bag shape by joining the side ends 9 of two flexible waterproof sheets, and its diameter decreases toward the interior side of the inner lining 15, with an opening 8 at its bottom. Each of the two waterproof sheets is provided with projections 10a and 10b extending toward the interior side of the inner lining 15 at the opening 8. These projections 10a and 10b are configured to overlap when the ice input section 6 is folded, forming a valve function that closes the opening 8. Therefore, by providing the funnel-shaped inner bag 7 on the inner surface of the inner lining 15, water leakage from the opening 6a can be effectively prevented.

[0050] It should be noted that the present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims. For example, the outer surface 2b of the U-shaped ice storage bag 2 may be made only of polyester fabric 4a. [Explanation of symbols]

[0051] 1,1A neck cooler 2 U-shaped ice storage bags 2a Inner peripheral surface part 2b Outer peripheral surface part 3. Heat dissipation sheet 4. Cooling sheet 4a Fabric 4b, 4c Lining 5 Waterproof tape 6. Ice input section 6a Mouth 7. Funnel-shaped inner bag 8 openings 9 Side edge 10a,10b protrusion 11 Belt component 12a, 10b Buckle 13 Connecting member 14 snap buttons 15 Interior 15a Ears 16 Exterior part 17 Main body

Claims

1. It consists of a U-shaped ice storage bag that has a roughly U-shape split into two prongs so that ice is contained inside and it can be worn around the user's neck. The aforementioned U-shaped ice storage bag is The inner surface that faces the neck when worn is formed with a heat dissipation sheet that can release icy cold air to the outside. The outer surface that faces outward when installed is formed of a cooling sheet that can insulate against heat from the outside. The heat dissipation sheet is formed from a sheet of TPU (thermoplastic polyurethane) or TPE (thermoplastic elastomer) and is configured to be transparent or translucent. The aforementioned cooling sheet has a surface made of polyester fabric and a back surface made of PEVA (polyethylene vinyl acetate) or aluminum insulation sheet. The U-shaped ice storage bag is provided with an ice insertion section extending outward from the central outer circumference and having an opening for inserting ice. The inner surface of the ice insertion section is provided with a funnel-shaped inner bag attached to the opening. The aforementioned funnel-shaped inner bag is made of a flexible waterproof sheet, and its diameter decreases towards the inside of the U-shaped ice storage bag, with an opening at the bottom, in a neck cooling device.

2. It consists of a U-shaped ice storage bag that has a roughly U-shape split into two prongs so that ice is contained inside and it can be worn around the user's neck. The aforementioned U-shaped ice storage bag is The inner surface facing the neck when worn is formed from a single-layer sheet made of TPU (thermoplastic polyurethane) or TPE (thermoplastic elastomer) to allow the cold air of ice to be released to the outside, and is made transparent or translucent. The outer surface that faces outward when attached is made of a double-layered sheet with a polyester fabric on the surface and TPU (thermoplastic polyurethane) on the back, in order to insulate against heat from the outside. The U-shaped ice storage bag is provided with an ice insertion section extending outward from the central outer circumference and having an opening for inserting ice. The inner surface of the ice insertion section is provided with a funnel-shaped inner bag attached to the opening. The aforementioned funnel-shaped inner bag is made of a flexible waterproof sheet, and its diameter decreases towards the inside of the U-shaped ice storage bag, with an opening at the bottom, in a neck cooling device.

3. The funnel-shaped inner bag is formed by joining the side edges of two waterproof sheets to create a bag shape. The opening at the bottom of the funnel-shaped inner bag is provided with projections on each of the two waterproof sheets that extend toward the inside of the U-shaped ice storage bag. The neck cooling device according to claim 1 or 2, wherein each of the aforementioned protruding pieces is configured to overlap and form a valve function that closes the opening when the ice insertion section is folded.

4. It consists of a U-shaped ice storage bag that has a roughly U-shape split into two prongs so that ice is contained inside and it can be worn around the user's neck. The U-shaped ice storage bag has an inner part in which ice is directly contained, and an outer part positioned outside the inner part and joined to the inside of the inner part, and the inner circumferential surface portion that faces the neck when worn and is positioned around the neck is made of a material that can release the cold air of the ice to the outside, and the outer circumferential surface portion that faces outwards when worn is made of a material that can insulate against heat from the outside, The interior section is entirely formed from a sheet of TPU (thermoplastic polyurethane) and is configured to be transparent or translucent. The portion of the inner circumferential surface of the exterior part is formed from a sheet of TPU (thermoplastic polyurethane) and is configured to be transparent or translucent. The outer periphery portion of the exterior is formed on the surface of a polyester fabric, and on the back surface is formed of a functional material sheet containing aluminum to reflect radiant heat. The functional material sheet is composed of an aluminum sheet in which an aluminum layer made of aluminum vapor deposition or aluminum foil is formed on the surface of a soft resin sheet, or an aluminum heat-shielding sheet in which an aluminum layer made of aluminum vapor deposition or aluminum foil is formed on the surface of a heat-insulating sheet made of a resin fiber layer, and a mesh fabric made of resin fibers is optionally formed on the surface of the aluminum layer. The aforementioned U-shaped ice storage bag has a roughly U-shaped main body that is divided into two parts, and an ice insertion part that is provided on the outer circumference of the roughly U-shape of the main body and has an opening for inserting ice, and extends outward so as to be foldable. The portion of the main body in the exterior part is composed of the inner circumferential surface portion and the outer circumferential surface portion. The portion of the exterior part where the ice is inserted is made solely of polyester fabric, or the surface is made of polyester fabric and the back surface is made of a TPU (thermoplastic polyurethane) sheet. The interior portion is formed in a bag shape from two sheets of TPU (thermoplastic polyurethane), and has tabs on the outer circumference excluding the opening, formed by bonding or welding the two TPU sheets together, with part or all of these tabs being joined to the exterior portion. A neck cooling device wherein a belt member is sewn to the opening of the ice insertion section together with the inner and outer parts, and the sewn portion of the belt member is provided with a waterproof structure on the inner surface side of the inner part by attaching waterproof tape or welding.

5. A funnel-shaped inner bag is provided on the inner surface of the inner part of the ice input section, extending from the opening of the inner part toward the inside of the inner part. The funnel-shaped inner bag is formed by joining the side edges of two flexible waterproof sheets, and its diameter decreases towards the inside of the inner lining, with an opening at the bottom. Each of the two waterproof sheets is provided with a projection extending toward the interior side of the interior part at the opening. The neck cooling device according to claim 4, wherein each of the aforementioned protrusions is configured to overlap when the ice insertion section is folded, forming a valve function section that closes the opening.

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