Dry ice case and cooling harness

Abstract

To provide a dry ice case that can cool the underarms and neck area, which are considered to be effective in preventing heat stroke, for a long time by using dry ice having excellent cooling effect, and can prevent frostbite and dew condensation, and a cooling harness that can be worn as an inner layer. [Solution] A cooling harness comprising shoulder and back members, two side strings that pass under each armpit, a chest string that connects the side strings together, and side pockets located under both armpits on the side strings, characterized in that a dry ice case is provided inside the side pockets.

Description

[Technical Field]

[0001] The present invention relates to a dry ice case that uses dry ice, which has excellent cooling effects, and can provide long-term measures against heat stroke while also preventing frostbite and condensation, and a cooling harness that uses the same. [Background technology]

[0002] Traditionally, heatstroke has been a problem at work sites in the summer, and countermeasures have included air-conditioned workwear with fans on the back and workwear with ice packs in the pockets.

[0003] However, when using an electric fan, there is a risk of sparks flying, so it cannot be used in work areas where open flames are strictly prohibited or where dust is flying. Also, when using ice packs, the ice packs melt after about an hour and have to be replaced frequently, which is a hassle.

[0004] Therefore, prior art cooling clothing and cooling systems have been disclosed that can be used in workplaces where open flames are strictly prohibited or where dust is present, and that can maintain a frozen state for a longer period of time than ice packs (Reference 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2023-125172 Summary of the Invention [Problem to be solved by the invention]

[0006] The prior art of Patent Document 1 features a vest that can store dry ice, which can maintain cooling longer than ice packs, in the armpits, back, and chest, providing excellent cooling for the body. However, it lacks the ability to cool the armpits and neck, areas considered effective for first aid in heatstroke, posing a risk of heatstroke even when worn. Even if dry ice could be stored under the armpits, the lack of condensation protection meant that condensation could cause wet arms, leading to discomfort. Dry ice sublimes at -78.5°C. Therefore, a simple mesh fabric would transmit its temperature directly to the body, potentially causing frostbite. Furthermore, due to its vest shape, it is bulky and cannot be used as an inner layer, making it difficult to wear discreetly.

[0007] The present invention solves these problems by providing a dry ice case that uses dry ice, which has excellent cooling effects, to cool the armpits and neck areas, which are considered effective in preventing heatstroke, for a long period of time, while also preventing frostbite and condensation, and a cooling harness that can be worn as an inner layer. [Means for solving the problem]

[0008] In order to achieve the above object, the dry ice case according to claim 1 of the present invention is a case for storing dry ice used in a cooling harness, and the dry ice case has a skin-side double raschel fabric, and an outer side of the dry ice facing outward, the outer side being made of an outer double raschel fabric, a double-sided aluminum sheet, and a sweat-absorbing, quick-drying mesh fabric. A dry ice case is provided with an adjustable double Russell fabric on the outer side that can be used to cover the dry ice, can be folded toward the skin to prevent overcooling or frostbite, and can be folded outward so as not to interfere with cooling the skin side. It is characterized by:

[0009] The dry ice case of the present invention uses a double-Russell fabric on the skin side (body side) of the dry ice, and the fabric has a three-dimensional mesh structure, which provides cushioning and allows cold air to pass through. Therefore, even when solid objects such as dry ice are placed inside, the case feels comfortable against the body and allows cold air to pass through, efficiently cooling the body. Furthermore, the three-dimensional structure of the fabric expands, preventing direct transmission of temperatures of -78.5°C to the body, thereby preventing frostbite. Furthermore, even if the dry ice sublimes, the mesh structure of the double-Russell fabric allows carbon dioxide to be expelled to the outside.

[0010] Furthermore, the dry ice case of the present invention has a fabric on the outside of the dry ice (the side facing away from the body) that is made of, from the outside, double-russell fabric, double-sided aluminum sheet, and sweat-absorbing, quick-drying mesh fabric. The double-russell fabric provides cushioning, preventing the dry ice from breaking even when subjected to external impact. This maintains the cooling function of the dry ice. The double-sided aluminum sheet prevents the cool air generated by the dry ice from escaping to the outside, keeping it close to the skin, while also reflecting and bouncing back radiant heat from the outside, blocking the supply of high temperatures from the outside. Furthermore, when the aluminum sheet is cooled by the dry ice inside, condensation forms on the outside of the aluminum sheet. However, the sweat-absorbing, quick-drying mesh fabric on the outside of the aluminum sheet quickly absorbs and dries the condensation. Therefore, condensation does not form on the outside of the dry ice case of the present invention, and there is no discomfort caused by moisture when touching the outside of the dry ice case.

[0011] The dry ice case according to claim 2 of the present invention is the dry ice case according to claim 1, characterized in that it comprises a plurality of the skin-side double raschel fabrics. 。

[0012] The dry ice case of the present invention has multiple layers of double-russell fabric on the skin side, preventing the temperature of -78.5°C from being directly transferred to the body. This prevents frostbite even when using the dry ice case for long periods of time. Furthermore, the dry ice case of the present invention has a lid made of double-russell fabric. If the dry ice case is too cold, the lid can be folded toward the skin to prevent it from getting too cold. If the dry ice case is not cold enough, the lid can be folded outward to allow the cold air to pass through without being obstructed. This allows the user's temperature needs to be easily met.

[0013] Claims of the present invention 3 The cooling harness according to claim 1 is a cooling harness comprising shoulder and back members, two side strings passing under each armpit, a chest string connecting the side strings together, and side pockets provided at the positions of the side strings under each armpit. or 2 The dry ice case according to claim 1 is provided in the side pocket. 4 The cooling harness according to claim 3 In the cooling harness described above, the side pockets are made of double raschel fabric on the skin side and on the outside.

[0014] With these features, the cooling harness of the present invention is designed to prevent heatstroke by providing side pockets in the underarm area, an ideal location for cooling due to the high blood flow. This allows for pinpoint cooling with the dry ice container, making it ideal for preventing heatstroke. Furthermore, since the harness is string-like except for the shoulder and back components, it is not bulky and can be worn as an inner layer under a uniform or shirt, or as an outer layer over a uniform or shirt. The dry ice container prevents condensation, so even when cooling under the armpits, the arms stay dry and comfortable. Furthermore, the side pockets are made of double-russell fabric, providing cushioning and breathability. While allowing cool air to pass through, the cushioning provides a comfortable feel for the body. Furthermore, the lack of shock transmission prevents the dry ice from breaking, allowing for continued use for a specified period of time.

[0015] In addition, the claims of the present invention 5 The cooling harness according to claim 3 The cooling harness according to claim 6 of the present invention is characterized in that the shoulder / back member has a neck pocket at a position immediately below the rear neck area for storing a dry ice case. 5 In the cooling harness described above, the under-neck dry ice case is characterized in that the skin side of the dry ice is made of under-neck skin-side double raschel fabric, and the outside of the dry ice is made of under-neck outer double raschel fabric, double-sided aluminum sheet, and sweat-absorbing, quick-drying mesh fabric facing outward.

[0016] These features allow for effective cooling below the neck area, a key factor in preventing heatstroke. The fabric on the skin side (towards the torso) of the dry ice is double-russell fabric, with a three-dimensional mesh structure, providing cushioning and allowing cool air to pass through. This means that even solid objects like dry ice feel comfortable inside, and the cool air passes through, effectively cooling the body. The three-dimensional structure of the fabric prevents direct transmission of temperatures of -78.5°C to the body, thereby preventing frostbite. The outer side of the dry ice (the side facing away from the body) is made of double-russell fabric, double-sided aluminum sheeting, and sweat-absorbing, quick-drying mesh fabric, facing outward. The double-russell fabric provides cushioning, preventing the dry ice from breaking down even when subjected to external impacts. This maintains the dry ice's cooling function. The double-sided aluminum sheeting prevents the cool air generated by the dry ice from escaping to the outside, keeping it close to the skin, while also reflecting and repelling radiant heat from the outside, blocking the supply of high temperatures from the outside. In addition, when the aluminum sheet is cooled by the dry ice inside, condensation forms on the outside of the aluminum sheet, but since the outside of the aluminum sheet is made of sweat-absorbing, quick-drying mesh fabric, the condensation can be quickly absorbed and dried. Therefore, condensation does not form on the outside of the dry ice case of the present invention, and there is no discomfort caused by moisture when touching the outside of the dry ice case. [Effects of the Invention]

[0017] From claim 1 of the present invention 2 The dry ice case according to the present invention 3 from 6According to the cooling harness described in the above, even when a solid object such as dry ice is placed inside, it feels comfortable to the body and allows the cool air to pass through, allowing for efficient cooling. It also prevents frostbite. It also maintains the cooling function of the dry ice. The double-sided aluminum sheet prevents the cool air generated by the dry ice from escaping and blocks the supply of high temperatures from the outside, preventing condensation and causing discomfort. It also provides pinpoint cooling to the underarm area, making it effective in preventing heatstroke. When used as an inner layer, it does not bulk up a blouson or shirt, providing a natural, attractive appearance and preventing stuffiness. It also allows for quick and easy donning and dry ice replacement as an outer layer. The cooling harness of the present invention can be worn with work clothes or uniforms, making it extremely effective in preventing heatstroke in the summer. [Brief explanation of the drawings]

[0018] [Figure 1] 1A and 1B are schematic perspective views of a dry ice case according to an embodiment of the present invention, in which FIG. 1A is a view from the skin side, and FIG. 1B is a view from the outside. [Figure 2] 1 is a schematic cross-sectional view of a dry ice case according to an embodiment of the present invention. [Figure 3] 1 is a schematic cross-sectional view of a neck-down dry ice case according to an embodiment of the present invention. [Figure 4] 1 is a schematic perspective view of a side pocket according to an embodiment of the present invention; [Figure 5] 1A and 1B are schematic perspective views of a cooling harness according to an embodiment of the present invention, in which FIG. 1A is a view seen from the front, and FIG. 1B is a view seen from the rear. [Figure 6] 1A and 1B are schematic perspective views showing a state in which a cooling harness according to an embodiment of the present invention is worn, where FIG. 1A is a view from the front, and FIG. 1B is a view from the back. DETAILED DESCRIPTION OF THE INVENTION

[0019] As shown in Figures 1(a), (b) and 2, the dry ice case 2 of the present invention is composed of at least a skin-side double Russell fabric 2-1 on the skin side of the dry ice 10, an outer double Russell fabric 2-2 on the outside of the dry ice 10, a double-sided aluminum sheet 2-3, a sweat-absorbing and quick-drying mesh fabric 2-4, and an adjusting double Russell fabric 2-5 as an adjusting fabric.

[0020] Double Russell fabric has a three-layer sandwich-like structure, with the front and back mesh knitted together with a separate yarn, giving it thickness and a three-dimensional feel. Therefore, double Russell fabric is lightweight, cushioned, resistant to deformation, and quick-drying. Dry ice 10 is -78.5°C, so by folding the skin-facing double Russell fabric 2-1 three times as shown in Figure 2, the cold air can pass through to cool the body, but the dry ice 10 does not come into direct contact with the body, preventing excessive cold and frostbite.

[0021] The outer double raschel fabric 2-2 is attached to the outside of the dry ice 10 and has good breathability and cushioning properties. This allows it to absorb external shocks, preventing damage to the dry ice and allowing it to emit cool air for a set period of time. It also allows the cool air (radiant heat) reflected by the double-sided aluminum sheet 2-3 to pass through.

[0022] The double-sided aluminum sheet 2-3 reflects the cold air from the dry ice 10 on the side facing the dry ice 10, keeping it refrigerated. The outer side also reflects radiant heat from the outside, preventing the dry ice 10 from sublimating. This allows the dry ice 10 to be used for a specified period of time.

[0023] The side of the double-sided aluminum sheet 2-3 facing the dry ice 10 is cooled by the dry ice 10, causing the outside of the double-sided aluminum sheet 2-3 to become wet due to condensation. The sweat-absorbing, quick-drying mesh fabric 2-4 can quickly absorb and dry the condensation, so the outside of the dry ice case 2 does not get wet due to condensation. Therefore, when the dry ice case 2 is placed under the arm, the inside of the arm does not get wet and is not uncomfortable.

[0024] The adjusted double russell fabric 2-5 is a thick, breathable fabric. When the dry ice 10 cools the body too much, the adjusted double russell fabric 2-5 can be folded toward the skin to prevent overcooling and frostbite. Conversely, when the body is not cooled enough, the adjusted double russell fabric 2-5 can be folded outward to prevent the body from being cooled.

[0025] As shown in Figure 3, the under-neck dry ice case 3 is composed of at least a double Russell fabric 3-1 on the skin side of the dry ice 10, a double Russell fabric 3-2 on the outside of the dry ice 10, a double-sided aluminum sheet 3-3, a sweat-absorbing and quick-drying mesh fabric 3-4, and an adjusting double Russell fabric 3-5 as an adjusting fabric.

[0026] The double raschel fabric 3-1 on the skin side under the neck is folded three times as shown in Figure 3, and allows cold air to pass through to cool the body, but the dry ice 10 does not come into direct contact with the body, so the body does not get too cold and frostbite can be prevented.

[0027] The double raschel fabric 3-2 on the outside of the neck is placed on the outside of the dry ice 10 and has good breathability and cushioning properties. This allows it to absorb external shocks and keep the dry ice 10 cool for a set period of time without damaging it. It also serves to transmit radiant heat reflected by the double-sided aluminum sheet 3-3.

[0028] The double-sided aluminum sheet 3-3 reflects the cold radiant heat from the dry ice 10 on the side facing the dry ice 10, keeping it refrigerated. The outer side also reflects the hot radiant heat from the outside, preventing the dry ice 10 from sublimating. This allows the dry ice 10 to be used for a specified period of time.

[0029] The sweat-absorbing and quick-drying mesh fabric 3-4 can quickly absorb and dry the condensation, so the outside of the under-the-neck dry ice case 3 does not get wet with condensation, and therefore when the under-the-neck dry ice case 3 is worn under the neck, the back does not get wet and is not uncomfortable.

[0030] The adjusted double russell fabric 3-5 is a thick, breathable fabric. When the dry ice 10 cools the body too much, the adjusted double russell fabric 3-5 can be folded toward the skin to prevent overcooling and frostbite. Conversely, when the body is not cooled enough, the adjusted double russell fabric 3-5 can be folded outward to prevent the body from being cooled.

[0031] As shown in Figures 5(a), (b) and 6(a) and (b), the cooling harness 1 is composed of at least shoulder and back members 6, side pockets 4 on both sides containing dry ice cases 2, side strings 7 that carry each side pocket 4 from each shoulder and back of the shoulder and back members 6, and a chest string 8 that connects both side strings 7 in front of the chest. The shoulder and back members 6 may also be provided with an under-neck pocket 5 containing an under-neck dry ice case 3.

[0032] The side pocket 4 is composed of at least a side pocket skin-side double raschel fabric 4-1 on the skin side and an outer side pocket double raschel fabric 4-2 on the outer (arm side). To prevent the dry ice case 2 from falling out, a zipper 4-4 or a side pocket lid double raschel fabric 4-3 may be attached to the pocket opening. The double raschel fabric 4-1 and 4-2 allow cold air to pass through while preventing the dry ice 10 from coming into direct contact with the body, thereby preventing frostbite. Furthermore, the high cushioning properties protect the dry ice 10 from impact. Furthermore, the high cushioning properties allow the pocket to deform and become thin when tucked under the arm, creating a comfortable feeling under the arm. Furthermore, the zipper 4-4 prevents the dry ice case 2 from falling out, damaging the dry ice 10, or losing the dry ice case 2.

[0033] The under-neck pocket 5 is provided on the shoulder and back member 6, and the skin side is made of double raschel fabric 5-1, which allows cold air to pass through and is thick enough to prevent excessive cold and frostbite. The outer side can also be made of double raschel fabric, but since the outer side does not come into contact with other parts of the body, condensation is not a problem.

[0034] The shoulder and back member 6 has fabric that extends from the back down to the collarbone so that it can be carried on each shoulder. Side strings 7 are provided from near the center of the back, passing through both sides to the shoulders. The skin side of the shoulder and back member 6 is preferably made of cushioned double russell fabric.

[0035] The side strings 7 extend from near the center of the back of the shoulder / back member 6, passing through both sides to the shoulder position, and side pockets 4 are provided at the position under the armpits. The side strings 7 may be a single string that passes through the side pockets 4, or may be separated in front and behind the side pockets 4.

[0036] The chest string 8 connects and holds both side strings 7 in front of the chest. This tightens the side strings 7 so they do not slip, and the position of the side pockets 4 can be maintained under the armpits. The chest string 8 is preferably divided into two pieces and connected in front of the chest using a connector, as this makes putting on the garment easier.

[0037] Next, an example of a manufacturing method for the cooling harness 1 according to the present invention will be described with reference to FIGS. 1 to 5. Double-russell fabric cut to a predetermined shape is folded a predetermined number of times to form the skin-side double-russell fabric 2-1 and the outer double-russell fabric 2-2. The skin-side double-russell fabric 2-1 is then sewn together at the location where the dry ice 10 will not be placed. A double-sided aluminum sheet 2-3 is sandwiched on the outside of the outer double-russell fabric 2-2, and the outer double-russell fabric 2-2 is sewn to the sweat-absorbing, quick-drying mesh 2-4. At this time, an adjustable double-russell fabric 2-5 is also sewn to the top. Bias tape is sewn to each end to finish the ends, completing the dry ice case 2. Two dry ice cases are made, and one under-neck dry ice case 3 is made using the same procedure as for the dry ice case 2. Next, the double raschel fabric cut to a predetermined shape is sewn together with outer fabric cut to a predetermined shape and with a hole cut out of the fabric of the predetermined shape, and pockets of the outer fabric of the predetermined shape are sewn into the hole cut out to create shoulder and back members 6, and side cords 7 are sewn to predetermined positions on shoulder and back member 6. Then, side pockets 4 and chest cord 8 are sewn to predetermined positions on side cords 7 to complete cooling harness 1 according to the present invention.

[0038] Next, an example of how to use the cooling harness 1 according to the present invention will be described with reference to FIGS. 1 to 6. Dry ice 10 produced by a specified machine is placed in two dry ice cases 2 and an under-neck dry ice case 3. The under-neck dry ice case 3 containing the dry ice 10 is placed in the under-neck pocket 5. If the temperature is very high, the adjusted double raschel fabric 3-5 is folded outward for storage. Then, after putting on the cooling harness 1, the dry ice cases 2 containing the dry ice 10 are placed in each side pocket 4. If the temperature is high, the adjusted double raschel fabric 2-5 is folded outward for storage, and the zippers 4-4 are closed to prevent the dry ice cases from falling. Finally, the separate chest straps 8 are connected, and the cooling harness 1 is ready for use. This is highly effective in preventing heatstroke, as it can cool the armpits and neck, which are considered to be the areas that should be cooled immediately as first aid for heatstroke. Dry ice 10, which is preferably 130 x 75 x 20 mm, can be used for more than four hours, so if you replenish it once during your lunch break, you can work comfortably and safely all day long.

[0039] If the user 100 feels that the dry ice case 2 is too cold during use, he or she removes the dry ice case 2 from the side pocket 4, refolds the adjusted double russell fabric 2-5 toward the skin, stores it back in the side pocket 4, and closes the zipper 4-4. This prevents the body from getting too cold.

[0040] As described above, wearing the cooling harness 1 of the present invention allows pinpoint cooling of the underarms and around the neck, which are highly effective in preventing heatstroke, using dry ice at -78.5°C, making it extremely effective in preventing heatstroke. Furthermore, even when used under the armpits, condensation does not form, so there is no discomfort. Furthermore, due to its high cushioning properties, it feels comfortable even under the armpits, and the dry ice 10 does not break even when subjected to impact, allowing it to be used for a predetermined period of time. Furthermore, because the cooling harness 1 of the present invention has a harness structure, it can be worn on the outside of a shirt or work clothes, or it can be used as an inner layer under a shirt or work clothes. This allows the user 100 to wear it in a stylish manner. [Industrial Applicability]

[0041] It can be widely used in the field of heatstroke prevention. [Explanation of symbols]

[0042] 1: Cooling harness 2: Dry ice case 2-1: Double Russell fabric on the skin side 2-2: Double Russell fabric on the outside 2-3: Double-sided aluminum sheet 2-4: Sweat-absorbing, quick-drying mesh fabric 2-5: Adjustable double raschel fabric 3: Under-neck dry ice case 3-1: Double raschel fabric on the skin side under the neck 3-2: Double raschel fabric on the outside under the neck 3-3: Double-sided aluminum sheet 3-4: Sweat-absorbing, quick-drying mesh fabric 3-5: Adjustable double raschel fabric 4: Side pocket 4-1: Double Russell fabric on the side pocket 4-2: Double Russell fabric on the outside of the side pocket 4-3: Side pocket lid double russell fabric 4-4: Zipper 5: Under-neck pocket 5-1: Double Russell fabric on the skin side of the under-neck pocket 5-2: Outer fabric of under-neck pocket 6: Shoulder and back members 7: Side strings 8: Chest strap 9: Bias tape 10: Dry ice 100: User

Claims

1. This dry ice case is a case for storing dry ice used in a cooling harness, and the skin side of the dry ice is made of skin-side double Russell fabric, and the outside of the dry ice is made of outer double Russell fabric, a double-sided aluminum sheet, and a sweat-absorbing, quick-drying mesh fabric facing outward.The outer double Russell fabric can be used to cover the dry ice, and can be folded toward the skin to prevent overcooling and frostbite, and can also be folded outward so as not to interfere with cooling the skin side.

2. 2. The dry ice case according to claim 1, characterized in that it comprises a plurality of layers of the skin-side double Russell fabric.

3. A cooling harness comprising shoulder and back members, two side strings that pass under each armpit, a chest string that connects the side strings together, and side pockets located under both armpits on the side strings, characterized in that the dry ice case described in claim 1 or 2 is located within the side pockets.

4. A cooling harness as described in Claim 3, characterized in that the side pockets are made of double Russell fabric on the skin side and outer side.

5. A cooling harness as described in Claim 3, characterized in that it is provided with an under-neck pocket for holding an under-neck dry ice case, located just below the rear of the neck of the shoulder / back member.

6. A cooling harness as described in Claim 5, characterized in that the under-neck dry ice case has the skin side of the dry ice made of under-neck skin-side double Russell fabric, and the outside of the dry ice facing outward has under-neck outer double Russell fabric, double-sided aluminum sheet, and sweat-absorbing, quick-drying mesh fabric.

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