Cold insulation case

Abstract

Provided are: a cold insulation case that has better cold insulation efficiency and is preferably a cold insulation case for a surfboard; and a cold insulation case set in which the same is used.　A cold insulation case set according to one aspect of the present invention includes: a cold insulation case provided with a heat insulating material; and a cold insulation case carrier including a floor frame member, a handle member that is connected to the floor frame member and penetrates the cold insulation case, and a wheel that supports the floor frame member.　Furthermore, a surfboard cold insulation case set according to another aspect includes: a surfboard cold insulation case provided with a heat insulating material; and a surfboard cold insulation case carrier including a floor frame member, a handle member that is connected to the floor frame member and penetrates the surfboard cold insulation case, and a wheel that supports the floor frame member.　A surfboard cold insulation case carrier according to another aspect includes: a floor frame member; a handle member that is connected to the floor frame member and penetrates the surfboard cold insulation case; and a wheel that supports the floor frame member.　A surfboard cold insulation case according to yet another aspect is provided with a heat insulating material.

Description

Cooling case

[0001] The present invention relates to a cooler case, and more specifically to a cooler case suitable for surfboards.

[0002] When engaging in outdoor activities such as camping, it is common to use a cooling case to keep food and beverages cold. Known techniques related to cooling cases are described in, for example, Patent Document 1 listed below.

[0003] Japanese Patent Application Laid-Open No. 2021-102464

[0004] Surfing is a sport in which surfers ride a surfboard on the ocean and glide over the crashing waves. In surfing, surfers often apply wax to the surfboard to prevent it from slipping.

[0005] However, in summer, temperatures are high and care must be taken to ensure that the temperature does not exceed the melting point of the wax.

[0006] In particular, when applying wax to a surfboard, the waxing process is often carried out the day before at a work location away from the ocean, such as a person's home, in order to optimize the condition of the wax applied.

[0007] However, there are still issues regarding the maintenance of surfboards after waxing. Specifically, surfboards are often covered, but these covers lack cold insulation, leaving the wax vulnerable to wear or melting during transport. Cars are a common means of transporting surfboards, and temperatures inside cars can rise sharply in the summer. Especially when the air conditioning system is turned off during breaks, the temperature inside the car can rise so high that it can easily exceed the melting point of the wax. Regarding this issue, the technology described in Patent Document 1, for example, is difficult to address, not only in terms of its structure but also in terms of its cold insulation performance.

[0008] That is, the technology described in Patent Document 1 has problems with keeping surfboards cool. Specifically, there are problems with the size, the cooling structure, the cooling efficiency such as the cooling time, and also with installing it inside the car.

[0009] SUMMARY OF THE INVENTION In view of the above problems, the present invention aims to provide a cooler case with better cooling efficiency, and further, a cooler case for surfboards that can be used in a car with good cooling efficiency.

[0010] One aspect of the present invention that solves the above problem is an insulated case set that includes an insulated case with insulation, a floor frame member, a cooler case carrier that includes a handle member connected to the floor frame member and through which the cooler case passes, and wheels that support the floor frame member.

[0011] Another aspect of the present invention is a surfboard cooler case set that includes a surfboard cooler case with thermal insulation, a floor frame member, a surfboard cooler case carrier that has a handle member connected to the floor frame member and through which the surfboard cooler case passes, and wheels that support the floor frame member.

[0012] Another aspect of the present invention is a surfboard cooler case carrier that includes a floor frame member, a handle member connected to the floor frame member and through which the surfboard cooler case passes, and wheels that support the floor frame member.

[0013] Also, in this respect, although not limited thereto, it is preferable to provide a protrusion that prevents the surfboard cooler case from falling off.

[0014] Furthermore, a surfboard cooler case according to another aspect of the present invention is provided with a heat insulating material.

[0015] Furthermore, although not limited to this aspect, it is preferable that the insulating material comprises a hollow columnar insulating member that forms a storage space and has a pair of end faces, a front cover insulating member that covers one of the pair of end faces of the hollow columnar insulating member, and a rear cover insulating member that covers the other of the pair of end faces of the hollow columnar insulating member.

[0016] In addition, in this respect, although not limited thereto, it is preferable to provide a cooling agent.

[0017] In addition, in this respect, although not limited thereto, it is preferable that the rear cover insulating member is also an openable and closable cover member.

[0018] Furthermore, although not limited to this aspect, it is preferable that the storage space is within the range of width 20 cm to 80 cm, height 10 cm to 80 cm, and depth 100 cm to 500 cm.

[0019] Furthermore, from this viewpoint, although not limited thereto, it is preferable that the temperature inside the storage space can be maintained at 25° C. or less for 4 hours or more.

[0020] Furthermore, in this respect, although not limited thereto, it is preferable that at least one of the hollow columnar insulating member, the front cover insulating member and the rear cover insulating member is divided.

[0021] Furthermore, in this respect, although not limited thereto, it is preferable that at least one of the hollow columnar insulating member, the front cover insulating member and the rear cover insulating member is made of multiple layers of insulating material.

[0022] In addition, in this respect, although not limited thereto, it is preferable that the multiple layers of insulating material are divided at different positions.

[0023] In addition, in this respect, although not limited thereto, it is preferable to provide a filler insulating material to be filled into the gap formed by the storage space and the stored surfboards.

[0024] In addition, in this respect, although not limited thereto, it is preferable to provide wheels on the ground contact surface side.

[0025] As described above, the present invention can provide a cooler case with better cooling efficiency, and further, a cooler case for surfboards that can be used in a car with good cooling efficiency.

[0026] FIG. 1 is a diagram showing an outline of a surfboard cooler case according to an embodiment; FIG. 2 is a diagram showing an outline of a cross section of a portion of a hollow columnar insulating member of a surfboard cooler case according to an embodiment; FIG. 3 is a diagram showing another example of an outline of a portion of a hollow columnar insulating member of a surfboard cooler case according to embodiment 1; FIG. 4 is a diagram showing an outline of another example of a surfboard cooler case according to embodiment 1; FIG. 5 is a diagram showing an outline of another example of a surfboard cooler case according to embodiment 1; FIG. 6 is a diagram showing an outline of another example of a surfboard cooler case according to embodiment 1; FIG. 7 is a diagram showing an outline of another example of a surfboard cooler case according to embodiment 1; FIG. 8 is a diagram showing an outline of another example of a surfboard cooler case according to embodiment 1; FIG. 9 is a diagram showing an outline of another example of a surfboard cooler case according to embodiment 1; FIG. 10 is a diagram showing an outline of another example of a surfboard cooler case according to embodiment 1; 1 is a diagram showing an example of the configuration of an insulating member of a surfboard cooler case according to embodiment 2. FIG. 2 is a diagram showing an example of the configuration of an insulating member of a surfboard cooler case according to embodiment 2. FIG. 3 is a diagram showing an example of the configuration of an insulating member of a surfboard cooler case according to embodiment 2. FIG. 4 is a diagram showing an example of the configuration of an insulating member of a surfboard cooler case according to embodiment 2. FIG. 5 is a developed view of an example of the configuration of an insulating member of a surfboard cooler case according to embodiment 2. FIG. 6 is a developed view of an example of the configuration of an insulating member of a surfboard cooler case according to embodiment 2. FIG. 7 is a diagram showing an example of the configuration of an insulating member of a surfboard cooler case according to embodiment 2. FIG. 8 is a diagram showing an example of the cross section of an insulating member of a surfboard cooler case according to embodiment 2. FIG. 9 is a diagram showing an example of when packing insulating material is placed in the storage space of a surfboard cooler case according to embodiment 2. FIG. 10 is a schematic view of a carrier according to embodiment 2. FIG. 11 is an image of when the surfboard cooler case is moved by the carrier according to embodiment 2. FIG. 12 is a schematic view of a convex portion of a carrier according to embodiment 2. FIG. 13 is an image of when the surfboard cooler case according to embodiment 2 is equipped with wheels. FIG. 14 is a diagram showing the results of temperature changes according to the examples.1A and 1B are diagrams showing the results of temperature changes according to an example, 1C and 1D, respectively, and 1D are diagrams showing the results of temperature changes according to an example, 1D and 1D, respectively, and 1D are diagrams showing the results of temperature changes according to an example.

[0027] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the specific examples of the embodiments shown below.

[0028] (Embodiment 1) Fig. 1 is a schematic diagram of a surfboard cooler case 1 according to this embodiment (hereinafter referred to as "this cooler case"). As shown in this figure, this cooler case 1 is a cooler case for surfboards that is equipped with thermal insulation. Furthermore, this cooler case 1 can maintain the temperature inside the storage space S at 25°C or below for 24 hours or more, even inside a car at an ambient temperature of 30°C.

[0029] As shown in this figure, this refrigerated case 1 comprises a hollow columnar insulating member 2 having a pair of opposing end faces 21 that form a storage space S, a front cover insulating member 3 that covers one end face 211 of the pair of end faces 21 of the hollow columnar insulating member 2, and a rear cover insulating member 4 that covers the other end face 212 of the pair of end faces 21 of the hollow columnar insulating member 2.

[0030] As described above, the hollow columnar insulating member 2 of the present cooler case 1 forms the storage space S and has a pair of end surfaces 21. The hollow columnar insulating member gives the present cooler case 1 a so-called long, thin cylindrical shape, allowing a surfboard to be stored inside. In other words, it serves as a wall separating the storage space S from the outside. Here, a rectangular columnar shape with four sides is preferable from the viewpoint of stable placement on the ground surface. However, it may also be a polygonal columnar shape, such as a triangular columnar shape with three sides, a pentagonal columnar shape with five sides, or a hexagonal columnar shape with six sides. It may also be a shape with curved surfaces, such as a cylindrical shape or an elliptical cylindrical shape. Furthermore, as will be clear from the description below, the cooler case 1 may be constructed as a single unit, or a portion thereof may be separable, with the separated portion being able to be opened and closed as a lid.

[0031] Furthermore, the cross section of the hollow columnar insulation member 2 in the present refrigerator case 1 preferably comprises a vacuum insulation member 22 and a frame material 23 that houses the vacuum insulation member 22. In other words, the vacuum insulation member 22 is the member that essentially performs the insulating function, and the frame material 23 is provided to protect and hold it. Figure 2 shows a cross section of part of the hollow columnar insulation member 2 of the present refrigerator case 1. In this embodiment, a vacuum insulation member is preferred, so this structure will be used for explanation, but as will be mentioned in later embodiments, structures other than vacuum insulation member are also possible.

[0032] Furthermore, the structure of the vacuum insulation member 22 in the present cooler case 1 is not limited, but preferably includes a pair of plate-like members 221, a spacer 222 disposed between the pair of plate-like members 221, and an insulating packaging bag 223 that covers the pair of plate-like members 221 and the spacer 222. This provides a vacuum insulation effect, making it possible to efficiently block heat exchange between the storage space and the outside.

[0033] Furthermore, the pair of plate-like members 221 in the vacuum insulation member 22 are members necessary for forming a vacuum layer therebetween. Although not limited thereto, various hard materials such as wood, resin, metal, and ceramics can be used as the material for the plate-like members 221, but resin is preferred in terms of thermal conductivity and cost. Furthermore, in the case of resin, although not limited thereto, examples include, but are not limited to, acrylic resin, ABS resin, PET resin, epoxy resin, phenolic resin, melamine resin, fluororesin, vinyl chloride resin, polyethylene, polycarbonate, polystyrene, polypropylene, and the like.

[0034] The shape of the pair of plate-like members 221 in the vacuum insulation member 22 is not limited as long as they are plate-like. A polygonal shape, such as a square, is preferred, but circular, elliptical, or other shapes are also possible in some cases. If the shape is polygonal, it is also preferable to round the corners. The size of the pair of plate-like members 221 is not limited as long as they can be accommodated within the hollow columnar insulation member 2. However, considering that the storage space S, as described below, is within the range of 10 cm to 80 cm in width, 10 cm to 80 cm in height, and 10 cm to 500 cm in depth, the width and length of the pair of plate-like members 221 are preferably, for example, 10 cm to 80 cm and 10 cm to 500 cm. This allows them to be accommodated within the hollow columnar insulation member 2. Furthermore, the thickness of this plate-like member 221 is not limited as long as it has the strength to maintain the vacuum state even when it is in a vacuum state, but it is preferable that it be 1 mm or more, for example.However, if it is too thick, the size of the cooler case itself will become large, so it is preferable that it be 50 mm or less, and more preferably in the range of 3 mm to 10 mm.

[0035] As described above, the spacer 222 in the vacuum insulation member 22 is disposed between the pair of plate-like members 221 and is used to separate the pair of plate-like members 221. In other words, a vacuum state can be formed by removing the air between them. Here, the "vacuum state" includes a state in which there is no air or the like, but since this is difficult to achieve in reality, a state in which the air density is sufficiently low is also included in this vacuum state.

[0036] The spacer 222 is preferably made of a material that is sufficiently hard and insulating because it is in contact with the pair of plate-like members 221 while preventing heat exchange between them, and although various hard materials such as wood, resin, metal, glass, and ceramics can be used, resin is preferred. In the case of resin, examples of resins include those types exemplified for the pair of plate-like members 221.

[0037] The shape of the spacer 222 is not particularly limited, and is preferably, for example, a spherical or columnar member with a certain diameter and height. This allows the pair of plate-like members 221 to be stably held apart. From the viewpoint of ensuring a certain distance, it is also preferable to use a fibrous insulating material such as glass wool as the spacer 222. Although it is difficult to ensure the thickness of a fibrous insulating material such as glass wool when placed in a vacuum, it is possible to ensure a certain thickness even in a vacuum state, and it is possible to fulfill the role of the spacer 222.

[0038] The height of the spacer 222, i.e., the distance between the pair of plate-like members 221, is not limited as long as a vacuum state can be maintained, but is preferably in the range of 1 mm to 50 mm, more preferably 20 mm or less, and even more preferably 10 mm or less. By setting it in this range, unnecessary heat insulation performance and a large refrigerator case can be avoided.

[0039] The vacuum insulation member 22 also includes a heat-insulating packaging bag 223 that covers the pair of plate-like members 221 and the spacer 222. The heat-insulating packaging bag 223 creates a vacuum between the plate-like members 221 and the spacer 222, preventing air from entering from the outside. The material of the heat-insulating packaging bag 223 is preferably a material that is sufficiently flexible but airtight, and is preferably a resin bag. The resin is not particularly limited, but examples thereof include polyethylene, polycarbonate, polystyrene, polypropylene, and vinyl chloride resin. In the case of resin, a metal such as aluminum may be vapor-deposited.

[0040] Furthermore, there are no limitations on the size of the heat-insulating packaging bag 223, as long as it can cover the pair of plate-like members 221 and spacer 222. Furthermore, since the heat-insulating packaging bag 223 specifically houses and evacuates the plate-like members 221 and spacer 222, it preferably has an opening for housing these therein and also has a check valve for evacuating air after closing while preventing air from entering from the outside.

[0041] Furthermore, in the present refrigerator case 1, although not limited thereto, it is preferable to provide cushioning material 224 at the corners of the pair of plate-like members 221 to prevent damage to the insulated packaging bag 223. When the pair of plate-like members 221 are polygonal, the corners may be sharp. In this case, if the sharp corners hit the insulated packaging bag 223, the insulated packaging bag 223 may tear at these points. Therefore, by applying cushioning material 224 to these corners, it is possible to prevent the insulated packaging bag 223 from tearing. Although not particularly limited, the cushioning material 224 is preferably a sponge-like resin, and examples thereof include, but are not limited to, polyethylene foam, polystyrene foam, urethane foam, polycarbonate foam, and phenol foam.

[0042] As described above, the frame material 23 of the hollow columnar insulating member 22 of the present refrigerator case 1 accommodates the internal insulating member. To this extent, the material is not limited. Various hard materials, such as wood, resin, metal, and ceramics, can be used. However, resin is preferred from the viewpoints of thermal conductivity, cost, and the thinness of the frame material itself. Resin materials include, but are not limited to, acrylic resin, ABS resin, PET resin, epoxy resin, phenolic resin, melamine resin, fluororesin, polyvinyl chloride resin, polyethylene, polycarbonate, polystyrene, and polypropylene. Furthermore, since the frame material 23 is a framework that defines the shape of the refrigerator case 1, it is formed to match the shape and dimensions of the refrigerator case.

[0043] Furthermore, another insulating member may be placed within the frame of the refrigerator case 1 in addition to the vacuum insulating member 22. More specifically, an auxiliary insulating member 24 may be placed between the vacuum insulating member 22 and the frame 23. This allows for a two- or three-tiered insulating structure. An example of this structure is shown in FIG. 3. Specific examples of the auxiliary insulating member 24 are not limited, and are preferably, but not limited to, insulating materials such as polyethylene foam, polystyrene foam, urethane foam, polycarbonate foam, and phenol foam.

[0044] As described above, the front lid insulating member 3 of the present refrigerator case 1 covers one end face 211 of the pair of end faces 21 of the hollow columnar insulating member 2. The storage space of the present refrigerator case 1 can be opened and closed by at least this front lid insulating member 3.

[0045] Furthermore, in this refrigerator case 1, the front cover insulating member 3 can have the same structure as the hollow columnar insulating member 2, so a detailed description is omitted. However, similar to the hollow columnar insulating member 2, it preferably includes a vacuum insulating member 22 and a frame member 23 for housing the vacuum insulating member. However, its dimensions differ. Specifically, they correspond to the area of ​​the opening of the hollow columnar insulating member 2, and are preferably, but not limited to, a width of 20 cm to 80 cm and a height of 10 cm to 80 cm. The thickness is also the same as that of the hollow columnar insulating member 2.

[0046] Furthermore, in the present refrigerator case 1, although not limited thereto, it is preferable that the hollow columnar insulating member 2 and the front cover insulating member 3 are sealed by a gasket when closed. The provision of the gasket improves adhesion and prevents air from flowing in and out of the refrigerator case 1. A preferable material for the gasket is, for example, a rubber ring. The same applies when the hollow columnar insulating member 2 itself can be separated and opened and closed between the hollow columnar insulating member 2 and the rear cover insulating member 4.

[0047] Furthermore, in this refrigerator case 1, the hollow columnar insulating member 2 and the front lid insulating member 3 are preferably openable and closable, and are equipped with fasteners to secure them when closed. This allows the refrigerator case to be closed securely. The fastener is not particularly limited, but a buckle or the like is preferable. Furthermore, one preferable example is to fasten the hollow columnar insulating member and the front lid insulating member with a hinge or the like to prevent alignment with the hollow columnar insulating member 2 and to prevent them from falling off when the front lid insulating member 3 is opened.

[0048] The rear lid insulating member 4 of this refrigerated case 1 covers the other end surface 212 of the pair of end surfaces 21 of the hollow columnar insulating member 2. That is, the front lid insulating member 3 and the rear lid insulating member 4 cover all of the openings of the hollow columnar insulating member 2, achieving a sealed state. The structure and dimensions of the rear lid insulating member 4 are similar to those of the front lid insulating member 3, so a description thereof will be omitted. However, while the front lid insulating member 3 is openable and closable, the rear lid insulating member 4 does not have to be openable and closable. This is because if the front lid insulating member 3 were openable and closable, a surfboard could be inserted through it into the storage space S. Furthermore, by making only the front lid insulating member 3 openable and closable, unnecessary opening and closing is restricted, preventing heat exchange due to unnecessary ventilation, etc., and enabling the interior of the storage space to be cooled efficiently.

[0049] However, in this refrigerator case 1, it is preferable that the rear lid insulating member 4 is also an openable / closable lid member. While making it openable does indeed cause issues such as reduced efficiency in heat exchange as mentioned above, if it is configured to prevent this, it will increase the number of directions in which surfboards can be inserted, increasing convenience. An image of this case is shown in Figure 4.

[0050] Furthermore, in addition to the above, in the present cooler case 1, it is preferable that the hollow columnar insulating member 2 is also configured to be openable and closable. For example, if the hollow columnar insulating member 2 is rectangular, and one or more of its openings are openable and closable and connected with fasteners and hinges, surfboards can be stored more easily. This configuration is illustrated in Figures 5 to 7. The example in Figure 5 shows an example in which one side of the front cover insulating member 3 and the hollow columnar insulating member 2 is openable and closable. The example in Figure 6 shows an example in which one top surface of the front cover insulating member 3 and the hollow columnar insulating member 2 is openable and closable. The example in Figure 7 shows an example in which the front cover insulating member 3, the rear cover insulating member 4, and one top surface of the hollow columnar insulating member 2 are openable and closable. In other words, as is clear from these examples, it is possible to configure at least two sides to be openable and closable.

[0051] Furthermore, as an example of opening and closing the refrigerator case 1, it is assumed that the front lid insulating member 3 is openable and closable, but it is also possible to imagine an example in which both the front lid insulating member 3 and the rear lid insulating member 4 are not openable and one side or one top surface of the hollow columnar insulating member 2 is openable and closable. An image of this case is shown in Figure 8.

[0052] Furthermore, as a member used to open and close the refrigerator case 1, it is preferable to attach a handle to at least one of the openable front cover insulating member 3, the openable rear cover insulating member 4, and the hollow columnar insulating member 2. Providing this handle makes it easier to hold, and if the insulating member is openable, it also makes opening and closing easier.

[0053] Furthermore, in the present cooler case 1, although not limited thereto, the storage space for the ice packs 5 preferably has a width of 10 cm to 80 cm, a height of 10 cm to 80 cm, and a depth of 10 cm to 500 cm, and more preferably a width of 20 cm to 80 cm, a height of 10 cm to 80 cm, and a depth of 100 cm to 500 cm. Surfboards come in a variety of shapes and dimensions, but by keeping the dimensions within these ranges, it is possible to accommodate almost all surfboards. In order to keep the dimensions within these limits, if the surfboard has detachable fins, it is preferable to remove the fins before inserting the surfboard into the storage space.

[0054] However, because surfboards often have fins, there is a problem that if the height of the fins is made uniform across the board, the cooling efficiency will be reduced. Therefore, it is preferable to change the shape of the hollow columnar heat insulating member 2 only in the area corresponding to the fins. An image of this case is shown in Figure 9.

[0055] The refrigerator case 1 preferably includes ice packs 5. The size of the ice packs 5 can be adjusted depending on the required cooling performance, but it is preferable to include multiple relatively small ice packs. Using relatively small ice packs has the advantage of being able to provide sufficient cooling even in the freezer compartment of a household refrigerator. The material of the ice pack is not limited to, but examples include ice, water-absorbent polymers such as sodium polyacrylate, etc.

[0056] Furthermore, in the present cooler case 1, it is preferable to provide a location for storing the ice packs 5 near the bottom of one side of the hollow columnar insulating member 2, specifically, to provide an ice pack holder 6 having multiple pockets 61 for storing multiple ice packs 5. An image of this case is shown in Figure 10. Generally, surfboards are expected to be inserted with the deck side facing downward. And since the deck side is often facing downward, placing the ice packs 5 near the bottom can improve the cooling efficiency.

[0057] Furthermore, although the ice pack holder 6 may be provided so as to be fixed within the storage space S, it is also preferable that it is provided with a sliding member 7 such as a bearing so that it can slide within the storage space S within the hollow columnar insulating member 2. By doing so, even in a deep ice pack case, it is possible to pull out the ice pack holder 6 toward the front, place the ice pack 5 in the pocket 61, and then slide it into the storage space S to store it. An image of this case is shown in Figure 11.

[0058] In this case, by providing a surfboard table 8 above the pocket 61 into which the ice packs 5 are inserted, after placing the ice packs 5 in the ice pack holder 6, the surfboard table 8 can be placed on top of the table and the surfboard can be placed on top of the table, and by sliding the table, both the ice packs 5 and the surfboard can be inserted into the storage space at the same time. Of course, these may be placed on separate slide members 7 so that they can be pulled out and inserted separately. An image of this configuration is shown in Figure 12.

[0059] Furthermore, in this ice pack holder 6, if the surfboard table 8 is slidable, it is possible to provide a gap in part of the bottom where there is no ice pack holder 6. An image of this is shown in Figure 13. In this case, the surfboard needs to be placed with the deck side facing up, but this gap can be used as storage space for the fins, which has the effect of increasing storage efficiency.

[0060] Furthermore, in the above example, the surfboard table 8 and ice pack holder 6 are inserted and removed by opening and closing the opening side of the hollow columnar insulation member 2, i.e., the front cover insulation member 3, but it is also possible to make the side, specifically one face of the hollow columnar insulation member, openable and closeable, and insert and remove the surfboard table 8 and ice pack holder 6 in this direction. An image of this configuration is shown in Figure 14. This makes it easier to take surfboards in and out.

[0061] Furthermore, although not limited thereto, it is preferable that the refrigerator case 1 be provided with a fixture for fixing it to the inside of the vehicle, so that it can be stably placed inside the vehicle.

[0062] Furthermore, in the present refrigerator case 1, although not limited thereto, it is preferable that the center of gravity is tilted so that the rear side is heavier than the front side. The tilting of the center of gravity can be adjusted as appropriate, but for example, a weight may be fixed to a pocket on the rear side of the ice pack holder 6, or the weight of the rear cover insulating member side of the hollow columnar insulating member 2 or the rear cover insulating member itself may be made heavier. In this way, even if the interior of the case protrudes to the front side when it is slid, the center of gravity remains on the rear side, preventing the case from tilting to the front side due to weight imbalance.

[0063] Furthermore, the features of this cooler case 1 can be utilized to enable it to be used as a general-purpose cooler case, not just for surfboards. That is, this cooler case can also be said to comprise a hollow columnar insulating member 2 that forms a storage space S and has a pair of end faces 21 whose area is smaller than the area of ​​the side faces, a front cover insulating member 3 that covers one end face 211 of the pair of end faces 21 of the hollow columnar insulating member 2, and a rear cover insulating member 4 that covers the other end face 212 of the pair of end faces 21 of the hollow columnar insulating member 2.

[0064] Another aspect of this cooler case is that it comprises a hollow columnar insulating member that forms a storage space and has a pair of end faces, a front lid insulating member that covers one of the pair of end faces of the hollow columnar insulating member, and a rear lid insulating member that covers the other of the pair of end faces of the hollow columnar insulating member, and at least one of the hollow columnar insulating member, front lid insulating member and rear lid insulating member comprises a vacuum insulating member and a frame material that houses the vacuum insulating member, and the vacuum insulating member can also be said to comprise a pair of plate-shaped members, a spacer arranged between the pair of plate-shaped members, and an insulating packaging bag that covers the pair of plate-shaped members and the spacer.

[0065] As described above, the present invention can provide a cooler case with better cooling efficiency, and further, a cooler case for surfboards that can be used in a car with good cooling efficiency.

[0066] (Embodiment 2) While the above-described Embodiment 1 uses vacuum insulation, an example without vacuum insulation is also possible. This point will be explained. The surfboard cooler case 1 according to this embodiment (hereinafter referred to as the "present cooler case") differs primarily in the structure of its insulation. That is, the present cooler case 1 includes a hollow columnar insulation member 2 having a pair of opposing open end faces 21 that form a storage space S, a front cover insulation member 3 that covers one open end face 211 of the pair of end faces 21 of the hollow columnar insulation member 2, and a rear cover insulation member 4 that covers the other open end face 212 of the pair of end faces 21 of the hollow columnar insulation member 2. In this respect, the present cooler case is similar to Embodiment 1, and a description thereof will be omitted.

[0067] This refrigerator case 1 includes a hollow columnar insulating member 2, a front lid insulating member 3, and / or a rear lid insulating member 4, and preferably all of these members are made of a general insulating material 25 that is not a vacuum insulating material, and an insulating packaging bag 26 that covers the insulating material 25. Figure 15 shows an example of the structure of the insulating member of the hollow columnar insulating member 2. Using such a general insulating material 25 has the advantage of keeping costs down even when the degree of vacuum is low. In this case, the material of the insulating material 25 is not particularly limited, and may be, for example, the same material as the auxiliary insulating material in the first embodiment. Figure 16 also shows an example in which the front lid insulating member 3 and the rear lid insulating member 4 are combined.

[0068] In addition, in this cooler case 1, the hollow columnar insulating member 2 may be constructed by covering each surface of the hollow columnar insulating member 2 individually with an insulating packaging bag 26 (i.e., each surface is manufactured individually) and combining them to form the hollow columnar insulating member 2, as shown in the figure, or by forming the insulating material 25 into a hollow columnar shape and then covering the entire surface with the insulating packaging bag 26 to form an integrated structure. This configuration is also similar for the front insulating cover member 3 and the rear insulating cover member 4, and it is preferable that each be constructed individually with insulating material 25 and then covered with the insulating packaging bag 26. In this case, the insulating packaging bag 26 is not limited as long as it can cover the insulating material 25 and maintain the insulating state, and it is preferable that it has, for example, a resin layer such as a polyethylene sheet with an aluminum foil layer formed on the resin layer. Furthermore, in this case, it is preferable to provide an outer frame 27 that houses the hollow columnar insulating members 2, front cover insulating member 3, and rear cover insulating member 4, each of which is covered on each side with a heat-insulating packaging bag 26, and to stably fix the arrangement of the hollow columnar insulating members 2, front cover insulating member 3, and rear cover insulating member 4. An image of this case is shown in Figure 17.

[0069] Furthermore, it is also preferable that an inner lid 28 is formed inside the lid of the outer frame 27. An image of this case is shown in Figure 18. As shown in this figure, by providing the inner lid 28, it is possible to further improve the heat insulation properties.

[0070] The insulating material 25 in the present cooler case 1 may be composed of a single layer, but is preferably composed of multiple layers. By using multiple layers, it is possible to reduce costs by combining multiple smaller insulating materials with the same volume and area, rather than manufacturing a single insulating material 25 with a large area and volume. Figure 19 shows an example (developed view) of the shape of an insulating material when the insulating material 25 of the hollow columnar insulating member 2 is a single layer, has a rectangular column shape with four faces, and each face is divided into multiple (two) faces.

[0071] Furthermore, when dividing the insulating material 25 of the present refrigerated case 1 on one surface, the dividing position may be different for each surface. By dividing the insulating material 25 on each surface in this manner, the dividing positions are dispersed, which has the advantage of maintaining the overall strength of the present refrigerated case 1. An example of this is shown in Figure 20. In this example, the insulating material is cut in a direction perpendicular to the long side of each surface.

[0072] It is also preferable that the insulating material 25 in this refrigerator case 1 is composed of multiple layers on each side, and that the division positions of each layer are different. An example of an insulating material on one side of the hollow columnar insulating member 2 in this case is shown in Figure 21. This has the advantage that even when using thin insulating material, sufficient thickness can be ensured and its strength can be maintained at a high level.

[0073] When the insulating material 25 is divided, the joints between the insulating materials 25 may be perpendicular to the surface of the insulating material, or may be tilted. This has the advantage that even if a force is applied in a direction perpendicular to the surface, the force can be dispersed. An image of this case is shown in Figure 22.

[0074] As described above, this refrigerated case 1 accommodates surfboards within the hollow columnar insulating member 2. Because surfboards have a leaf-like shape with pointed ends, excess space is created within the storage space S. Therefore, it is preferable to place ice packs at the four corners to fill this space. Furthermore, by attaching a sponge-like filler insulating material 29 to the inner lid 28, the surfboard is pressed against the surface, reducing the risk of damage to the surfboard due to vibrations during transport. This has the advantage of eliminating the need to press the surfboard with a belt or other fastener, allowing it to be safely secured. An image of this configuration is shown in Figure 23.

[0075] In addition, in the present refrigerator case 1, it is also preferable to place a refrigerator in a case for the refrigerator (a refrigerator case). By doing so, the conditions can be maintained for a long time by reducing heat exchange of the refrigerator and preventing the temperature from being lowered more than necessary. This reduces heat exchange and prevents the temperature from being lowered too much.

[0076] Because the present refrigerated case 1 is relatively large, it is preferable to transport it using a surfboard refrigerated case carrier (hereinafter simply referred to as "carrier") 9. In this case, the combination of the carrier and the present refrigerated case 1 can be considered a surfboard refrigerated case set. In this case, the carrier 9 preferably includes a floor frame member 91, a handle member 92 connected to the floor frame member 91 and through which the present refrigerated case 1 passes, and wheels 93 that support the floor frame member 91. An illustration of this configuration is shown in Figure 24. This configuration allows the present refrigerated case 1 to be easily moved by placing the present refrigerated case 1 on it and holding the handle member 92. The handle member 92 is preferably ring-shaped, allowing the present refrigerated case to be inserted. In this case, the handle member 92 is preferably positioned offset from the longitudinal direction (toward the end face of the hollow columnar insulation member). Positioning the handle member 92 offset allows the lifting direction to be set. In this case, it is preferable to provide wheels 93 on the lower end of the floor frame member 91 opposite the offset position, and to provide support legs 94 near the lower end of the other floor frame member 91. This has the advantage that the case will not move easily when not being held up by the user, but will be easy to move when the user holds the handle member 92 and lifts it. An image of this configuration is shown in Figure 25. Note that although the handle member 92 is designed to allow the refrigerated case 1 to be inserted from the longitudinal direction, the handle member 92 may also be designed to allow the refrigerated case 1 to be inserted from a direction perpendicular to the longitudinal direction.

[0077] In this case, the floor frame member 91 is a member for holding the refrigerator case 1, and may be a plate-like member as long as it functions as a frame, or may be an outer frame member only. The floor frame member 91 may also be provided with protrusions 911 to prevent the refrigerator case 1 from slipping off when placed on it. An image of this case is shown in Figure 26. The number of protrusions 911 is not particularly limited, and should be one or more, but is preferably two or more, and more preferably four or more.

[0078] While the carrier 9 facilitates portability of the refrigerated case 1, it is also preferable to provide wheels 93 on the ground-contacting surface (the surface that comes into contact with the ground when the refrigerated case is placed on the floor) of the refrigerated case 1. An illustration of this configuration is shown in Figure 27. This configuration allows the refrigerated case 1 to be easily moved, as described above. Furthermore, when providing wheels 93 on the refrigerated case 1, it is preferable to provide three or more wheels. If the refrigerated case has a rectangular prism shape, four wheels may be provided at the four corners. However, as in the above example, two wheels may be legs and two wheels 93. In this case, it is preferable to provide a handle on the side with the legs, which allows the refrigerated case to be lifted. By changing the position of the wheels, the principle of leverage comes into play, allowing the refrigerated case 1 to be moved with less force.

[0079] As described above, the present invention can provide a cooler case with better cooling efficiency, and further, a cooler case for surfboards that can be used in a car with good cooling efficiency.

[0080] In order to verify the effectiveness of the refrigerator case according to the above embodiment, the applicant confirmed the refrigerator function. Specific details are provided below. (Lid Structure of the Refrigerated Case) First, four types of lid structures were designed as lid members for the refrigerator case. The types of lids were classified into inner lids and outer lids, and four types of lid structures were created by combining these and varying the thickness of the insulating material. The four lid structures are: first, an inner lid with 20 mm thick insulating material (hereinafter, Sample No. 1); second, an outer lid with 20 mm thick insulating material (hereinafter, Sample No. 2); third, an inner lid with 20 mm thick insulating material and an outer lid with 20 mm thick insulating material (hereinafter, Sample No. 3); and fourth, an inner lid with 40 mm thick insulating material and an outer lid with 20 mm thick insulating material (hereinafter, Sample No. 4). Capacity: 450 cm ３ 0.089 g / cm of ice packs are placed in the ice pack case. ３ Four containers were prepared and covered with four different lids. These four types of cooler cases were used and placed inside a car to confirm their cooling efficiency. The results of these experiments are shown in Figure 28. Sample No. 4 had the best cooling efficiency, followed by Sample No. 3, Sample No. 2, and Sample No. 1. This confirms that the three lid structures of the cooler case - that is, the presence of an inner lid, the thick insulation of the inner lid, and the presence of an outer lid that covers the entire case - are effective in improving cooling efficiency.

[0081] (Refrigerated Case 1) First, two rectangular acrylic plates were sandwiched between nine acrylic spacers (5 mm long x 5 mm wide x 5 mm thick) placed at each corner, midway between them, and at the center, and then placed in a vacuum packaging bag (material: nylon poly (polyethylene and nylon)). Six plates were prepared by thoroughly evacuating them with a vacuum pump (two plates: 125 mm long x 125 mm wide x 5 mm thick, two plates: 125 mm long x 150 mm wide x 5 mm thick, and two plates: 150 mm long x 150 mm wide x 5 mm thick). The thickness of each vacuum insulation member was approximately 15 mm.

[0082] To hold the heat insulating member, two boxes (an inner box and an outer box) were prepared, and the inner box was inserted into the outer box, with one of the vacuum heat insulating members placed in each gap (bottom, side, and top). To ensure the vacuum heat insulating member could be securely placed in the gap, the inner box had an outer dimension of a cube with sides of 125 mm (each 20 mm thick), and the outer box had an inner dimension of 160 mm (50 mm thick) to accommodate the vacuum heat insulating member and inner box.

[0083] That is, an inner box was placed inside an outer box, and six vacuum insulation members were placed inside it.Furthermore, five 20g pieces of commercially available ice packs (IT'S COOL, manufactured by Daikoku Kogyo Co., Ltd., 80mm long x 70mm wide) were placed inside the inner box to form a cold storage case (hereinafter referred to as "Cold Storage Case 1").The case was then placed in a room maintained at 30 degrees by an air conditioner, and its cooling efficiency was confirmed.

[0084] (Change to Glass Wool) On the other hand, similar measurements were also carried out in a case where glass wool was filled to a thickness of 10 to 15 mm instead of the above vacuum insulation member.

[0085] The results of these experiments are shown in Figure 29. As a result, it was confirmed that while the room temperature was maintained at 30°C, the refrigerator case 1 was able to stably maintain a temperature of 25°C or less for 24 hours or more in all cases. As a result, the effect of the refrigerator case 1 could be fully confirmed by scaling up the experiment as it was. In this case, the weight of the ice pack was 0.2g relative to the content volume, that is, the ice pack was 0.2g / cm ３ It was confirmed that this was more than sufficient.

[0086] (Refrigerated Case 2) In addition, a cooled case (hereinafter referred to as "Refrigerated Case 2") was also created in which only the dimensions (more specifically, only the height) of the inner box, outer box, and vacuum insulation member were different from those of the above-mentioned cooled case 1, and similar measurements were performed. Specifically, the outer dimensions of the inner box were a regular square prism with a width of 125 mm, a depth of 125 mm, and a height of 255 mm (each 20 mm thick), and the inner dimensions of the outer box were 160 mm, a depth of 160 mm, and a height of 290 mm (each 50 mm thick). Two of the six vacuum insulation members remained the same dimensions, and the dimensions of the remaining four pairs of acrylic plates were 125 mm x 285 mm and 150 mm x 285 mm. As described above, the inner box was placed inside the outer box, and six vacuum insulation members were placed inside. Furthermore, 14 pieces of 20 g of commercially available ice packs (IT'S COOL, manufactured by Daikoku Kogyo Co., Ltd., length 80 mm x width 70 mm) were placed inside the inner box to form ice storage case 2. This was placed in a room maintained at 30 degrees by an air conditioner, and its cooling efficiency was confirmed.

[0087] Furthermore, similar to the above, measurements were also carried out in a case where glass wool was filled to a thickness of 10 to 15 mm in place of the vacuum insulation member.

[0088] The results of these experiments are shown in Figure 30. These results were similar to those shown in Figure 29, and it was confirmed that the same effect could be obtained even when the scale was changed. That is, the results confirmed that the temperature was kept sufficiently low, at 25°C or below, even 18 hours after installation. In other words, by using a heat insulating member, and further by using a vacuum heat insulating member, it was confirmed that the cooling efficiency was improved and the surfboard could be stably cooled even inside a car in the summer, confirming the effectiveness of the present invention.

[0089] On the other hand, measurements were also carried out to confirm the effectiveness of a case similar to those described above for Refrigerated Cases 1 and 2, except that only the above-mentioned box (the inner box was simply placed inside the outer box) was used. The results are shown in Figure 31. The results in this figure show that the temperature did not last for even 20 hours, and in fact became higher than room temperature, confirming the effectiveness of this vacuum insulation member.

[0090] The present invention has industrial applicability as a refrigerated case. Specifically, it can be used in the following areas: (1) Food-related products such as boxed lunches, frozen foods, catering, pizza delivery, school lunch services, vegetables, cakes, frozen desserts, seafood, meat, fruit, smoothies, snacks, frozen dough, pre-cooked frozen foods, and frozen heavy foods (frozen meat, large quantities of frozen vegetables, etc.); (2) Medical and pharmaceutical products such as vaccines, herbal medicines, blood products, organ transplants, injectable drugs, and reagents that require freezing; and (3) Food delivery, beer and beverage delivery, fresh food delivery services, and delivery and transportation of heavy beverages (case-sold beverages, beer, etc.). (4) Automotive applications such as refrigerators in cars, on-board freezers, and food trucks; (5) Sports applications such as drinks for sports teams, nutritional supplements for athletes, beverage management at sporting events, and marine sports (surfboards, etc.); (6) Funeral applications such as storing bodies, cooling for funerals, and mementos of the deceased; (7) Agriculture and fishing applications such as storing refrigerated or frozen harvests and preserving the freshness of seafood; (8) Cosmetics applications such as cosmetics that require refrigeration (organic products, etc.); (9) Industrial applications such as storing special chemical products: Cooling materials; (10) Event-related applications such as serving frozen foods and restaurants with cooling functions; and (11) Pet-related applications such as freezing and storing pet food and cooling mats.

[0091] DESCRIPTION OF SYMBOLS 1...Surfboard cooler case 2...Hollow columnar insulation member 21...Pair of end faces 211...One end face 212...Other end face 22...Vacuum insulation member 221...Plate-shaped member 222...Spacer 223...Insulated packaging bag 224...Cushioning material 23...Frame member 24...Auxiliary insulation member 29...Filling insulation material 3...Front cover insulation member 4...Rear cover insulation member 5...Refrigerant 8...Surfboard table 9...Carrier 91...Floor frame member 92...Handle member 93...Wheels S...Storage space

Claims

1. A cooler case set comprising: a cooler case with thermal insulation; a floor frame member; a cooler case carrier having a handle member connected to the floor frame member and allowing the cooler case to pass through; and wheels supporting the floor frame member.

2. A surfboard cooler case set comprising: a surfboard cooler case with thermal insulation; a surfboard cooler case carrier having a floor frame member, a handle member connected to the floor frame member and through which the surfboard cooler case passes, and wheels for supporting the floor frame member.

3. A surfboard cooler case carrier having a floor frame member, a handle member connected to the floor frame member through which a surfboard cooler case can pass, and wheels supporting the floor frame member.

4. A surfboard cooler case carrier as claimed in claim 3, which is provided with a protrusion for preventing the surfboard cooler case from falling off.

5. An insulated surfboard cooler case.

6. A surfboard cooler case as described in claim 5, wherein the insulation material comprises: a hollow columnar insulation member forming a storage space and having a pair of end faces; a front cover insulation member covering one of the pair of end faces of the hollow columnar insulation member; and a rear cover insulation member covering the other end face of the pair of end faces of the hollow columnar insulation member.

7. The surfboard cooling case according to claim 5, further comprising an ice pack.

8. The surfboard cooler case according to claim 6, wherein the rear cover insulating member is also an openable and closable cover member.

9. The surfboard cooler case according to claim 6, wherein the storage spaces each have a width of 20 cm to 80 cm, a height of 10 cm to 80 cm, and a depth of 100 cm to 500 cm.

10. The surfboard cooler case according to claim 7, which can maintain the temperature inside the storage space at 25° C. or below for four hours or more.

11. The surfboard cooler case according to claim 6, wherein at least one of the hollow columnar insulating member, the front cover insulating member and the rear cover insulating member is divided.

12. The surfboard cooler case according to claim 6, wherein at least one of the hollow columnar insulation member, the front cover insulation member and the rear cover insulation member is made of a plurality of layers of insulation material.

13. The surfboard cooler case according to claim 12, wherein the multiple layers of insulating material are each divided at different positions.

14. The surfboard cooler case of claim 6, further comprising insulating material for filling gaps formed by the storage space and the surfboards stored therein.

15. The surfboard cooler case of claim 5, which is provided with wheels on the contact surface side.

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