JP7513078B2 - Cooling and heating container and cooling and heating container with basket cart - Google Patents

Description

Embodiments of the present disclosure relate to a cool/heat-insulating container and a cool/heat-insulating container with a basket cart that can stably maintain the temperature of the internal storage space at a constant temperature, for example, between 2°C and 5°C.

Conventionally, for example, as a cool/warm container for keeping medicines cool or warm, there is known one that includes multiple insulating panels and stores medicines in an internal storage space.

JP 2016-210466 A

However, with conventional cool/warm containers, the temperature of the internal storage space changes significantly depending on the outside air temperature, making it difficult to stably keep medicines cool or warm, for example, between 2°C and 5°C.

The objective of the present disclosure is to provide a cool/heat insulated container and a cool/heat insulated container with a basket cart that can stably maintain the temperature of the internal storage space within a desired constant temperature range.

The cool/heat-insulating container according to an embodiment of the present disclosure is a cool/heat-insulating container having an internal storage space, and is provided with a back panel, a front panel that can be opened and closed, a pair of side panels, a top panel, and a bottom panel, and the back panel, the front panel, the pair of side panels, the top panel, and the bottom panel are all made of thermally insulating panels, and a heat transfer body is installed on the inner surface of each of the back panel, the pair of side panels, and the front panel.

In the coolant/heat-insulating container according to the embodiment of the present disclosure, coolant/heat-insulating material may be installed on the inner surfaces of the rear panel, the pair of side panels, and the top panel.

In the cool/heat insulating container according to the embodiment of the present disclosure, the cool/heat insulating material may be placed on the inner surface of the heat transfer body.

In the cool/heat insulating container according to the embodiment of the present disclosure, the cool/heat insulating material may comprise a single-layer cool/heat insulating material including a fixed cool/heat insulating material.

In the cold/heat insulation container according to the embodiment of the present disclosure, the cold/heat insulation material may further include a multi-layer cold/heat insulation material including an additional cold/heat insulation material laminated to the fixed cold/heat insulation material and having a melting point lower than that of the fixed cold/heat insulation material.

In the cool/heat-insulating container according to the embodiment of the present disclosure, the fixed cool/heat-insulating material may be layered on the inside of the storage space of the cool/heat-insulating container relative to the additional cool/heat-insulating material.

In the cool/heat insulating container according to the embodiment of the present disclosure, the fixed cool/heat insulating material may be lighter than the additional cool/heat insulating material.

In the cold/heat insulation container according to the embodiment of the present disclosure, the single-layer cold/heat insulation material and the multi-layer cold/heat insulation material may be arranged on the inner surfaces of the rear panel, the pair of side panels, and the top panel in either a summer arrangement pattern or a winter arrangement pattern.

The cool/heat-insulating container with basket cart according to an embodiment of the present disclosure includes the cool/heat-insulating container described above and a basket cart that stores and holds the cool/heat-insulating container.

According to an embodiment of the present disclosure, the temperature of the internal storage space can be stably maintained within a desired constant temperature range.

FIG. 1 is a perspective view showing a cooler/heater container according to an embodiment of the present disclosure. FIG. 2 is a perspective view of a cooler/heat insulated container according to an embodiment of the present disclosure with the front panel open. FIG. 3 is a perspective view showing a cool/warm container with a basket cart according to an embodiment of the present disclosure. FIG. 4 is a front view showing a hook-and-loop fastener installed in a cooler/heater container with a basket cart with the front panel open. FIG. 5 is a front oblique view showing a hook-and-loop fastener placed in a cooler/heat-insulating container with a basket cart with its front panel open. FIG. 6 is a front view showing the cooling/heat insulation material of the cooling/heat insulation container with a basket cart with the front panel open. FIG. 7 is a front view showing the heat and cold insulation material of the heat and cold insulation container with a basket cart with the front panel open. FIG. 8 is a side view showing the attached state of the aluminum plate and the hook-and-loop fastener. FIG. 9 is a plan view showing an aluminum plate and a cold/heat insulating material placed in a cold/heat insulating container. FIG. 10 is a side view showing a cooling/heat insulation material placed in a cooling/heat insulation container. FIG. 11 is an enlarged view showing the cold and heat insulating material shown in FIG. FIG. 12 is an exploded perspective view showing the cool/heat insulation container. FIG. 13 is a cross-sectional view showing each panel. FIG. 14A is a cross-sectional view showing the vacuum insulation material of each panel. FIG. 14B is a cross-sectional view showing the vacuum insulation of each panel. FIG. 15A is a top view of a cooler/heat insulated container according to an embodiment of the present disclosure. FIG. 15B is a front view of a cooler/heater container according to an embodiment of the present disclosure. FIG. 15C illustrates a diagram showing temperature changes within a cooler/heater container according to an embodiment of the present disclosure. FIG. 16A is a plan view showing a cool/heat-insulating container as a comparative example. FIG. 16B is a front view showing a cool/heat-insulating container as a comparative example. FIG. 16C is a diagram showing temperature changes in a cool/heat-insulating container as a comparative example. FIG. 17A is a diagram showing the operation of a cool/warm container with a basket cart according to an embodiment of the present disclosure in summer. FIG. 17B is a diagram showing the operation of the cool/warm container with basket cart according to the embodiment of the present disclosure in summer. FIG. 17C is a diagram showing the operation of a cool/warm container with a basket cart according to an embodiment of the present disclosure in summer. FIG. 17D is a diagram showing the operation of a cooler/heater insulation container with a basket cart according to an embodiment of the present disclosure in summer. FIG. 17E is a diagram showing temperature changes in the upper section of a cooler/heater container according to an embodiment of the present disclosure in summer (outside air temperature 35° C.). FIG. 17F is a diagram showing temperature changes in the middle section of a cooler/heater container according to an embodiment of the present disclosure in summer (outside air temperature 35° C.). FIG. 17G is a diagram showing temperature changes in the lower compartment of a cooler/heater container according to an embodiment of the present disclosure in summer (outside air temperature 35° C.). FIG. 17H is a diagram illustrating temperature changes in the cargo of a cooler/heater container in summer (outside air temperature 35° C.) according to an embodiment of the present disclosure. FIG. 17I is a diagram showing temperature changes in summer (outside air temperature 35° C.) on a load of a cooler/heater container according to an embodiment of the present disclosure. FIG. 17J is a diagram showing temperature changes in the upper section of a cooler/heater container according to an embodiment of the present disclosure in summer (outside air temperature 10° C.). FIG. 17K is a diagram showing temperature changes in the middle section of a cooler/heater container according to an embodiment of the present disclosure in summer (outside air temperature 10° C.). FIG. 17L is a diagram showing temperature changes in the lower compartment of a cooler/heater container according to an embodiment of the present disclosure in summer (outside air temperature 10° C.). FIG. 17M is a diagram showing temperature changes in the load of a cooler/heater container in summer (outside air temperature 10° C.) according to an embodiment of the present disclosure. FIG. 17N is a diagram showing temperature changes in summer (outside air temperature 10° C.) on a load of a cooler/heater container according to an embodiment of the present disclosure. FIG. 18A is a diagram showing the operation of a cool/warm container with a basket cart according to an embodiment of the present disclosure in winter. FIG. 18B is a diagram showing the operation of the cool/warm container with basket cart according to the embodiment of the present disclosure in winter. FIG. 18C is a diagram showing the operation of the cool/warm container with basket cart according to the embodiment of the present disclosure in winter. FIG. 18D is a diagram showing the operation of a cool/warm container with a basket cart according to an embodiment of the present disclosure in winter. FIG. 18E is a diagram showing temperature changes in the upper section of a cooler/heater container according to an embodiment of the present disclosure in winter (outside air temperature 20° C.). FIG. 18F is a diagram showing temperature changes in the middle section of a cooler/heater container according to an embodiment of the present disclosure in winter (outside air temperature 20° C.). FIG. 18G is a diagram showing temperature changes in the lower compartment of a cooler/heater container according to an embodiment of the present disclosure in winter (outside air temperature 20° C.). FIG. 18H is a diagram showing temperature changes in the cargo of a cooler/heater container in accordance with an embodiment of the present disclosure during winter (outside air temperature of 20° C.). FIG. 18I is a diagram showing temperature changes in winter (outside air temperature 20° C.) on a load in a cooler/heater container according to an embodiment of the present disclosure. FIG. 18J is a diagram showing temperature changes in the upper section of a cooler/heater container according to an embodiment of the present disclosure in winter (outside air temperature -5° C.). FIG. 18K is a diagram showing temperature changes in the middle section of a cooler/heater container according to an embodiment of the present disclosure in winter (outside air temperature -5° C.). FIG. 18L is a diagram showing temperature changes in the lower compartment of a cooler/heater container according to an embodiment of the present disclosure in winter (outside air temperature -5° C.). FIG. 18M is a diagram showing temperature changes in the cargo of a cooler/heater container in winter (outside air temperature -5° C.) according to an embodiment of the present disclosure. FIG. 18N is a diagram showing temperature changes in winter (outside air temperature -5° C.) on a load of a cooler/heater container according to an embodiment of the present disclosure. FIG. 19 is a perspective view showing temperature measurement points of the cool/heat insulation container under no-load conditions. FIG. 20 is a side view showing temperature measurement points of the cool/heat insulation container under a load condition. FIG. 21 is a plan view showing temperature measurement points of the cool/warm container under load conditions.

<Present embodiment>
Hereinafter, the present embodiment will be described with reference to the drawings. Each of the figures shown below is a schematic illustration. Therefore, the size and shape of each part are appropriately exaggerated to facilitate understanding. In addition, it is possible to carry out appropriate modifications within the scope of the technical idea. In each of the figures shown below, the same parts are given the same reference numerals, and some detailed explanations may be omitted. In addition, the numerical values such as the dimensions of each member and the material names described in this specification are examples of the embodiment, and are not limited to these, and can be appropriately selected and used. In this specification, terms that specify shapes and geometric conditions, such as parallel, orthogonal, and vertical, are intended to include substantially the same state in addition to their strict meanings.

In the following embodiments, the "X direction" refers to a direction parallel to the front direction of the container with basket cart and parallel to the floor surface on which the container with basket cart is placed, and the "Y direction" refers to a direction perpendicular to the X direction and parallel to the floor surface on which the container with basket cart is placed. The "Z direction" refers to a direction parallel to the vertical direction. The "front" refers to a surface perpendicular to the floor surface facing the worker, and the "back" refers to a surface perpendicular to the floor surface facing the front. The "top" refers to a surface parallel to the floor surface and the upper surface of the container with basket cart, and the "bottom" refers to a surface parallel to the floor surface and the lower surface of the container with basket cart. The "side" refers to a surface perpendicular to the floor surface and the longitudinal end side of the container with basket cart.

First, the present embodiment of the cool/warm container with basket cart 10A will be described with reference to Figures 1 to 7.

As shown in Figs. 3 to 7, such a cool/warm container with a basket cart 10A includes a basket cart 30 that runs on a floor surface F, and a cool/warm container 10 stored and held in the basket cart 30. In this case, the basket cart 30 has a basket cart body 31 including wheels 32 that run on the floor surface F, and a side bar 33 that holds the cool/warm container 10 placed on the basket cart body 31. Here, a roll box pallet specified in JIS Z 0610: 1998 or a pallet with a modified size can be suitably used as the basket cart 30. Metal pipes can also be used as the side bars 33. A single door or double door made of a rubber band, mesh panel, or shelf can also be used instead of the side bars 33.

The cool/warm container 10 also includes a top panel 11, a front panel 12 having a pair of openable/closable panels 12a, 12b, a back panel 13, a pair of side panels 14, 15, and a bottom panel 16.

Here, Fig. 1 shows a cool/heat insulated container 10 according to this embodiment with the front panel 12 closed, and Fig. 2 shows the cool/heat insulated container with the front panel closed. Figs. 3 to 7 show a cool/heat insulated container with a basket cart according to this embodiment.

The cool/heat-insulating container with basket cart 10A is used, for example, in stores, factories, and logistics processes to store and transport medicines that need to be kept cool or warm. As described above, such a cool/heat-insulating container with basket cart 10A is equipped with a cool/heat-insulating container 10 that forms a storage space 20 capable of storing medicines, and is capable of stably maintaining the temperature within the storage space 20 of the cool/heat-insulating container 10 at a constant temperature range of, for example, 2°C to 5°C.

<Cooling and heating container>
Next, the cool/heat insulating container 10 according to the present embodiment will be further described with reference to Figs.
The cool/warm container 10 has a substantially rectangular parallelepiped shape and includes a top panel 11, a front panel 12 having a pair of opening/closing panels 12a, 12b, a back panel 13, side panels 14, 15, and a bottom panel 16. The top panel 11, the side panel 14, the side panel 15, the back panel 13, the front panel 12, and the bottom panel 16 are each substantially rectangular. The main surfaces of the front panel 12 and the back panel 13 have substantially the same size, and the main surfaces of the side panel 14 and the side panel 15 have substantially the same size. Each of the panels 11 to 16 is made of a plate-like member having rigidity as described below, and is designed not to flexibly deform during use.

In the cool/warm container 10 configured as described above, it is possible to form a storage space 20 for storing loads by being surrounded by the six panels 11-16. In this case, a roughly rectangular storage space 20 is formed between each of the panels 11-16. The storage space 20 is surrounded by insulating material on all sides, as described below, which limits the inflow and outflow of heat from the outside and maintains its thermal insulation properties. In addition, the six panels 11-16 of the cool/warm container 10 each have their periphery in close contact with one of the other panels 11-16, ensuring that the storage space 20 is airtight.

As shown in Figs. 1 and 2, handles 17a and 17b are attached to the pair of opening and closing panels 12a and 12b that constitute the front panel 12 of the cooler/heater container 10. Furthermore, sealing flaps 18a and 18b are attached to the periphery of each opening and closing panel 12a and 12b to improve the airtightness of the front panel 12.

Furthermore, hook-and-loop fasteners 21a, 21b are attached to the inner surface of each opening and closing panel 12a, 12b of the front panel. These hook-and-loop fasteners 21a, 21b engage with locking fasteners 22a, 22b provided on the upper surface of the top panel 11 to secure the pair of opening and closing panels 12a, 12b to the corresponding side panels 14, 15.

That is, the opening and closing panels 12a, 12b of the front panel 12 can be placed in a closed position where they are closed to each other (see FIG. 1). Furthermore, the opening and closing panels 12a, 12b of the front panel 12 are opened and rotate 270° in the opening direction to reach the corresponding side panels 14, 15. In this position, the hook and loop fasteners 21a, 21b of the opening and closing panels 12a, 12b engage with the locking fasteners 22a, 22b. This allows the opening and closing panels 12a, 12b of the front panel 12 to be locked to the corresponding side panels 14, 15 at a position rotated 270° in the opening direction.

Next, the panels 11 to 16 that make up the cold/warm container 10 will be described in further detail with reference to Figures 12 to 14A and 14B.

As shown in Figures 12 to 14A and 14B, the panels 11 to 16 constituting the cold/warm container 10 each include an insulating panel having an insulating section 40 including a vacuum insulating material 41, as described below (see Figure 13). Note that in this embodiment, the panels 11 to 16 each include a vacuum insulating material 41, but this is not limited to this. Some or all of the panels 11 to 16 may include an insulating material such as a foam insulating material.

Next, the configuration of each of the panels 11 to 16 will be further explained. Note that in the following, "panels 11 to 16 (partial panels) are parallel (perpendicular) to a specified surface" means "the main surface of panels 11 to 16 (partial panels) is parallel (perpendicular) to the specified surface."

First, the top panel 11 is a panel located on the top side (positive side in the Z direction) and is arranged parallel to the horizontal plane (XY plane).

(Front panel)
The front panel 12 is a panel located on the front side (the negative side in the Y direction) and is disposed perpendicular (parallel to the ZX plane) to the horizontal plane (the XY plane).

The front panel 12 has a pair of opening and closing panels 12a, 12b.

(Rear Panel)
The rear panel 13 is a panel located on the rear side (positive side in the Y direction) and is disposed perpendicular (parallel to the ZX plane) to the horizontal plane (XY plane).

(Side panel)
The side panels 14, 15 are disposed perpendicular (parallel to the YZ plane) to the horizontal plane (XY plane). The side panels 14, 15 are each formed of a single plate-shaped member.

(Bottom Panel)
The bottom panel 16 is a panel located on the bottom side (negative side in the Z direction) and is arranged parallel to the horizontal plane (XY plane). The bottom panel 16 is arranged on the bottom plate of the basket cart 30. The bottom panel 16 is composed of a single plate-shaped member. A reinforcing sheet for reinforcing the bottom panel 16 may be provided on the bottom panel 16. Each of the panels 11 to 16 constituting the cool/warm container 10 may be configured to be foldable.

(Internal structure of the panel)
Next, the structure of each of the panels 11 to 16 will be described. Fig. 13 is a cross-sectional view showing the heat insulating portion 40 of each of the panels 11 to 16. Figs. 14(a) and 14(b) are cross-sectional views showing the vacuum heat insulating material 41 included in the heat insulating portion 40.

As shown in FIG. 13, the insulation section 40 of each panel 11 to 16 includes a vacuum insulation material 41 having a thickness of, for example, 20 mm, a foam insulation material 42 having a thickness of, for example, 20 mm, an insulation outer enclosure 43, an insulation material protection member 44 having a thickness of, for example, 10 mm, and an exterior fabric 45.

The foam insulation material 42 can be disposed adjacent to at least the storage space 20 side of the vacuum insulation material 41. A known foam insulation material can be used for the foam insulation material 42, and may be, for example, polystyrene foam, polyethylene foam, or polyurethane foam. Alternatively, instead of the foam insulation material 42, plastic board (hollow structure), polypropylene Plapearl (registered trademark of Kawakami Sangyo Co., Ltd.), or polyethylene twin cone (registered trademark of Ube Exsymo Co., Ltd.) may be used. In this case, a hollow structure plastic board made of polypropylene or polyethylene can be used.

The heat-insulating outer periphery 43 is provided as desired and is formed to surround the vacuum insulation material 41. The heat-insulating outer periphery 43 may be made of the same material as the foam insulation material 42. In addition, a resin material with poor heat insulation properties, for example, a thin resin material of 3 mm or less, can be used for the purpose of protecting the end face of the vacuum insulation material. The heat-insulating outer periphery 43 is arranged on the foam insulation material 42 and attached to the foam insulation material 42. At this time, the heat-insulating outer periphery 43 is sealed only on the periphery, or a laminate consisting of the vacuum insulation material 41, the foam insulation material 42, the heat-insulating outer periphery 43, and the insulation material protection member 44 is wrapped from the outside, or simply placed on the foam insulation material 42. By arranging the heat-insulating outer periphery 43 to surround the vacuum insulation material 41, the heat-insulating performance is improved compared to when the heat-insulating outer periphery 43 is not arranged. In addition, a panel configuration in which the vacuum insulation material 41 has approximately the same area as the foam insulation material 42 and does not use the heat-insulating outer periphery 43 is also possible. In this case, the insulation performance can be improved, but since there is no insulated outer enclosure 43, the vacuum insulation material 41 may be vulnerable to tearing due to sharp objects entering from the side. Note that a small gap is formed between the insulated outer enclosure 43 and the vacuum insulation material 41, so that the vacuum insulation material 41 can be contained within the insulated outer enclosure 43 even if the size of the vacuum insulation material 41 changes slightly. This gap may be filled with a flexible foam.

The insulation protection member 44 is provided on the insulation outer periphery 43 and mainly serves to protect the vacuum insulation material 41. For example, a protective material made of an organic polymer can be used as the insulation protection member 44. The insulation protection layer 44 may also be made of the same material as the foam insulation material 42.

The exterior fabric 45 is arranged so as to wrap the entire periphery of the vacuum insulation material 41, the foam insulation material 42, the insulation outer periphery 43, and the insulation material protection member 44. This exterior fabric 45 can be arranged to cover the entire vacuum insulation material 41 and the foam insulation material 42. Examples of the exterior fabric 45 include resin sheets, polyester fabrics, polyethylene fabrics, and polyester canvas. Among them, multilayer sheets containing metal foil with heat-shielding properties and vapor deposition sheets in which a vapor deposition layer is formed on one side of a resin sheet are suitable. Other examples include multilayer sheets containing metal foil, and vapor deposition sheets in which a vapor deposition layer is formed on one side of polyester fabrics, polyethylene fabrics, and polyester canvases. Examples of such multilayer sheets include laminated sheets of polyethylene woven fabric and aluminum vapor deposition film. In addition, a nano multilayer laminated sheet in which different types of polymer resins are laminated in nanometer units may be used as the exterior fabric 45.

Next, the vacuum insulation material 41 will be further described. As shown in FIG. 14(a), the vacuum insulation material 41 is composed of a core material 41a and an exterior material 41b having gas barrier properties, and is an insulation material obtained by reducing the pressure inside the exterior material 41b. FIG. 14(b) is another example of the vacuum insulation material 41. In FIG. 14(a), voids are formed at both ends inside the vacuum insulation material 41, but in FIG. 14(b), no voids are formed. The voids may or may not be formed depending on the manufacturing method of the vacuum insulation material 41.

The core material 41a may be a material that is used as the core material of conventionally known vacuum insulation materials, for example, a powder such as silica, a foam such as urethane polymer, or a porous material such as a fiber material such as glass wool.

The exterior material 41b is a member that covers the outer periphery of the core material 41a, and may be a flexible sheet in which a heat-sealed layer and a gas barrier layer are laminated in this order from the core material. The gas barrier layer may be a metal foil or a vapor deposition sheet in which a vapor deposition layer is formed on one side of a resin sheet. The metal foil may be made of aluminum, for example. The vapor deposition layer may be made of aluminum, aluminum oxide, or silicon oxide, for example.

The vacuum insulation material 41 is attached to the foam insulation material 42. The vacuum insulation material 41 is composed of a core material 41a and an exterior material 41b provided around the core material 41a. An insulation material protection member 44 is arranged on the storage space 20 side of the vacuum insulation material 41 (upper side in Figure 13). This reduces the risk of the vacuum insulation material 41 being damaged when it is hit by a load placed in the storage space 20. On the other hand, the foam insulation material 42 is arranged on the opposite side to the storage space 20 (lower side in Figure 13). This reduces the risk of the vacuum insulation material 41 being damaged by an external impact.

A heat transfer plate (also called a heat transfer body) 25 made of, for example, an aluminum plate is attached to the inner surface of the cool/heat-insulating container 10. Specifically, the heat transfer plate 25 is attached to the inner surface of the back panel 13 of the cool/heat-insulating container 10, the inner surface of the pair of side panels 14, 15, and the inner surface of the pair of opening/closing panels 12a, 12b of the front panel 12 via double-sided tape 25A (see FIG. 8). The material of the heat transfer plate 25 is not limited to aluminum, and gold, silver, copper, zinc, beryllium, alloys thereof, diamond-like carbon, graphite sheet, etc. can be used. Aluminum is preferably used because of its high heat conductivity, low cost, and light weight.

The heat transfer plate 25 is preferably an aluminum plate having a thickness of 0.8 mm and made of A1100 material, and has high thermal conductivity, for example, 0.22 kW/m·K.
The surface of the aluminum plate is anodized to prevent corrosion. The heat transfer plate 25 may be attached directly to the inner surface of the rear panel 13, the inner surfaces of the pair of side panels 14, 15, and the inner surfaces of the pair of opening and closing panels 12a, 12b of the front panel 12 without using the double-sided tape 25A.

As shown in FIG. 12, the heat transfer plate 25 is installed on the entire inner surface of the rear panel 13, the entire inner surface of the pair of side panels 14, 15, and the entire inner surface of the pair of opening and closing panels 12a, 12b of the front panel 12, except for the upper edge region 26 and the side edge region 27.

In this case, the lower edge of the heat transfer plate 25 is approximately aligned with the lower edges of the rear panel 13, the pair of side panels 14, 15, and the pair of opening and closing panels 12a, 12b of the front panel.

The heat transfer plate 25 may be installed over the entire inner surface of the rear panel 13, the entire inner surface of the pair of side panels 14, 15, and the entire inner surface of the pair of opening and closing panels 12a, 12b of the front panel 12, without leaving the upper edge region 26 or the side edge region 27.

In this way, by installing the heat transfer plate 25 on the inner surface of the rear panel 13, the inner surface of the pair of side panels 14, 15, and the inner surface of the pair of opening and closing panels 12a, 12b of the front panel 12, respectively, the heat present in the storage space 20 of the cold and heat-insulating container 10 or the heat of the cold and heat-insulating material 50 can be reliably transferred in the vertical direction by the heat transfer plate 25. This makes it possible to effectively conduct heat along the vertical direction in the storage space 20 of the cold and heat-insulating container 10. This makes it possible to effectively reduce the temperature difference (temperature unevenness) between the upper position and the lower position in the storage space 20. In addition, instead of the heat transfer plate 25 made of an aluminum plate, other heat transfer bodies, such as a metal rod-shaped body or a metal mesh structure, may be used. The heat transfer material preferably has a thermal conductivity of 0.1 kW/m·K or more, more preferably 0.2 kW/m·K or more, and is not limited to metal heat transfer materials, and non-metal heat transfer materials such as graphite sheets, carbon sheets, and carbon fiber mesh structures may also be used. For example, carbon materials with a thermal conductivity of 0.1 kW/m·K, aluminum materials with a thermal conductivity of 0.2 kW/m·K, and copper materials with a thermal conductivity of 0.4 kW/m·K can be used as heat transfer materials.

Furthermore, a cold insulation and heat insulation material 50 is installed on the inner surface of each of the top panel 11, the back panel 13, and the pair of side panels 14, 15 of the cold insulation and heat insulation container 10. In this way, by installing the cold insulation and heat insulation material 50, the temperature of the storage space 20 can be maintained at a suitable temperature. Also, by installing the cold insulation and heat insulation material 50 on the inner surface of the heat transfer plate 25, the cold insulation and heat insulation material 50 comes into contact with the air in the storage space 20, so the temperature of the storage space 20 can be efficiently adjusted and maintained.

Next, the installation structure of the cold and heat insulating material 50 will be described with reference to Figures 3 to 7, 8 and 9.

The cold/heat insulating material 50 is attached directly to the inner surface of the top panel 11 of the cold/heat insulating container 10, and the cold/heat insulating material 50 is attached to the inner surfaces of the back panel 13 and the pair of side panels 14, 15 via a heat transfer plate 25.

As shown in Figures 10 and 11, the heat transfer plate 25 is attached to the inner surface of the rear panel 13 and the pair of side panels 14, 15 with double-sided tape 25A as described above, and multiple strip-shaped hook-and-loop fasteners 51 extending in the vertical direction are provided on this heat transfer plate 25. A storage pocket 52 having two stacked storage sections 52A, 52B is attached with these strip-shaped hook-and-loop fasteners 51. A 5°C class cold and heat insulating material (weight 0.3 kgf) 55A is stored in storage section 52A, and a 0°C class cold and heat insulating material (weight 1 kgf) 55B is stored in storage section 52B.

The inner surface of the top panel 11 is provided with a number of strip-shaped hook-and-loop fasteners 51 extending horizontally. A storage pocket 52 having two stacked storage sections 52A, 52B is attached by the strip-shaped hook-and-loop fasteners 51. A 5°C class cold and heat insulating material 55A is stored in storage section 52A, and a 0°C class cold and heat insulating material 55B is stored in storage section 52B. Since the top panel 11 does not have a heat transfer plate 25, the storage pocket 52 may be attached by sewing directly to the exterior fabric 45 of the top panel 11. In this case, the risk of the storage pocket 52 falling out can be reduced.

The storage pocket 52 including the storage sections 52A and 52B is made of a woven fabric, mesh material, or nonwoven fabric made of synthetic resin fibers, and the storage pocket 52 can be easily fastened to the inner wall of the cold/warm container 10 by the belt-shaped hook-and-loop fastener 51. The storage pocket 52 may also be formed using a material similar to the exterior material 41b or the exterior fabric 45. When a material equivalent to the exterior material 41b is used as the storage pocket 52, an aluminum vapor deposition film can be used, and when a material equivalent to the exterior fabric 45 is used, a laminate of an aluminum vapor deposition film and a polyethylene woven fabric can be used. In this way, the same material can be used in various places to reduce material procurement costs. The storage pocket 52 may also be fastened by a hook and eyelet structure without using the hook-and-loop fastener 51. In addition, the storage pocket 52 may be attached directly to the inner surface of each panel 11, 14, 15 using rivets or the like in the case of a panel that has an aluminum heat transfer plate 25, and using sewing in the case of a panel that does not have an aluminum heat transfer plate 25 and in which the exterior fabric 45 is exposed.

As described above, 5° C. class cold and heat insulation material 55A is stored in storage section 52A of storage pocket 52, and 0° C. class cold and heat insulation material 55B is stored in storage section 52B. Of these, 5° C. class cold and heat insulation material 55A has a melting point of 5° C., and 0° C. class cold and heat insulation material 55B has a melting point of 0° C. In this embodiment, 5° C. class cold and heat insulation material 55A is disposed inside storage space 20 of cold and heat insulation container 10 with respect to 0° C. class cold and heat insulation material 55B, and is usually fixed in place without being removed.
On the other hand, the 0° C. class cold and heat insulating material 55B is disposed on the panel 11, 13, 14, 15 side with respect to the 5° C. class cold and heat insulating material 55A, and is installed as desired.

For this reason, the 5°C class cold insulation material 55A can be called a fixed cold insulation material, and the 0°C class cold insulation material 55B can be called an additional cold insulation material.

As described above, the 5°C class cold insulation material 55A is a fixed cold insulation material, and the 0°C class cold insulation material 55B is an additional cold insulation material. In this case, the multi-layer cold insulation material 50A is formed by stacking the 5°C class cold insulation material 55A and the 0°C class cold insulation material 55B, and the single-layer cold insulation material 50B is formed by only arranging the 5°C class cold insulation material 55A.

The cold insulation and heat insulation material 50 includes the multi-layer cold insulation and heat insulation material 50A and the single-layer cold insulation and heat insulation material 50B. By providing the multi-layer cold insulation and heat insulation material 50A or the single-layer cold insulation and heat insulation material 50B including the fixed cold insulation and heat insulation material 55A in this way, the work of removing and replacing the fixed cold insulation and heat insulation material 55A can be omitted. In addition, since the additional cold insulation and heat insulation material 55B, which has a low melting point, faces the heat transfer plate 25, heat can be efficiently absorbed or released through the heat transfer plate 25. In addition, it is possible to prevent the additional cold insulation and heat insulation material 55B, which has been pre-cooled to a temperature lower than the target temperature of, for example, 2°C to 5°C, from directly coming into contact with the load.

<Operation of this embodiment>
The operation of the present embodiment having the above-mentioned configuration will be described below. First, the operation of the present embodiment in which an aluminum plate is provided inside the cooler/heater insulation container 10 will be described with reference to Figures 15A to 15C.

As shown in Figures 15A to 15C, the cool/heat-insulating container 10 according to this embodiment has a front panel 12 having a pair of opening/closing panels 12a, 12b, a back panel 13, and a pair of side panels 14, 15, each of which has a heat transfer plate 25 provided on its inner surface. In addition, storage pockets 52 are attached to the back panel 13, the pair of side panels 14, 15, and the top panel 11. Inside the storage pockets 52, a cool/heat-insulating material 50 having a 5°C-class cool/heat-insulating material 55A and a 0°C-class cool/heat-insulating material 55B is stored.

In this case, the 0°C class cold insulation material 55B is pre-cooled to about -23°C and frozen, and the 5°C class cold insulation material 55A is cooled from room temperature to 5°C in a warehouse with a temperature of 5°C or by the 0°C class cold insulation material 55B.

In this way, the inside of the cool/heat-insulating container 10 can initially be maintained at a constant temperature range of, for example, 2°C to 5°C. Thereafter, over time, the temperature inside the cool/heat-insulating container 10 gradually rises (see Figure 15C).

However, as shown in FIG. 15C, the cooler/heater container 10 has a pair of opening/closing panels 12a, 12b, a rear panel 13, and heat transfer plates 25 provided on the inner surfaces of a pair of side panels 14, 15, so that the heat in the storage space 20 can be effectively transferred in the vertical direction by the heat transfer plates 25. This allows the temperature difference between the upper and lower parts of the storage space 20 to be kept within a range of 0.3°C.

Next, Figures 16A to 16C show the operation of a comparative example of a cooler/heat-insulating container 10 that does not have a heat transfer plate 25.

The comparative example cool/heat-insulating container 10 is the same as the cool/heat-insulating container 10 according to the present embodiment shown in Figures 15A and 15B, except that the heat transfer plate 25 has been removed.

Figure 16C shows the temperature change within the storage space 20 of the cool/warm container 10 as a comparative example.

As shown in FIG. 16C, the comparative example cool/heat-insulating container 10 does not have a heat transfer plate 25 that provides a heat transfer effect, so over time the temperature difference between the top and bottom of the cool/heat-insulating container 10 increases to 1.6°C.

In this way, according to this embodiment, by providing a heat transfer plate 25 inside the cooler/heater container 10, the temperature difference between the upper and lower parts of the storage space 20 can be made as small as possible.

Next, a method for using the cool/warm container with basket cart 10A according to this embodiment in the summer will be described with reference to Figures 17A to 17N.

First, prepare a cold/warm container 10A with a basket cart, which is equipped with a basket cart 30 and a cold/warm container 10 according to this embodiment (see FIG. 17A). Next, open the pair of opening/closing panels 12a, 12b on the front panel 12 of the cold/warm container 10.

Next, as shown in FIG. 17B, the cold and heat insulating material 50 is stored in a storage pocket 52 provided in the cold and heat insulating container 10. Specifically, of all the storage pockets 52, 5°C class cold and heat insulating material 55A is already stored at room temperature in storage section 52A on the storage space 20 side. Next, 0°C class cold and heat insulating material 55B is inserted into storage section 52B of the storage pocket 52. At this time, 0°C class cold and heat insulating material 55B has already been cooled to a temperature of -23°C and frozen. Furthermore, 0°C class cold and heat insulating material 55B is inserted only into storage section 52B of the desired storage pocket 52. That is, the 0°C class cold insulation and heat insulation material 55B is inserted into the storage sections 52B of a total of four storage pockets 52: two of the four storage pockets 52 on the front panel 12 side of the top panel 11, the top three of the four storage pockets 52 on the side panel 14, the top three of the four storage pockets 52 on the side panel 15, and the second and fourth rows from the bottom of the two rows and four columns of storage pockets 52 on the back panel 13.

As described above, multi-layer cold insulation material 50A is composed of 5°C class cold insulation material 55A and 0°C class cold insulation material 55B, and single-layer cold insulation material 50B is composed of a single layer of 5°C class cold insulation material 55A.

For this reason, in a storage pocket 52 in which 0°C class cold insulation material 55B is inserted into storage section 52B in addition to 5°C class cold insulation material 55A that is already inserted into storage section 52A of storage pocket 52, a multi-layer cold insulation material 50A is formed, while in a storage pocket 52 in which 0°C class cold insulation material 55B is not stored and only 5°C class cold insulation material 55A is inserted into storage section 52A, a single-layer cold insulation material 50B is formed.

Next, as shown in FIG. 17C, the cool/heat insulated container with basket cart 10A is transported to a warehouse with a temperature of 5°C. Next, with the pair of opening/closing panels 12a, 12b open, the cool/heat insulated container with basket cart 10A is left in the warehouse with a temperature of 5°C for one hour. In this case, during this one hour, the 5°C class cool/heat insulated material 55A is cooled to 5°C in the warehouse with a temperature of 5°C. To be precise, the temperature of the 5°C warehouse rises temporarily during the process of transporting the cool/heat insulated container with basket cart 10A, so by leaving the container with basket cart 10A for one hour after it has reached a constant temperature of 5°C again, the 5°C class cool/heat insulated material 55A is cooled to 5°C.

At this time, in the multi-layered cold insulation and heat insulation material 50A, in addition to being cooled in a warehouse with a 5°C class cold insulation and heat insulation temperature of 5°C, the 0°C class cold insulation and heat insulation material 55B, which has been cooled to -23°C in advance, rapidly cools the 5°C class material 55A from room temperature to 5°C, and the 5°C class cold insulation and heat insulation material 55A is rapidly cooled from room temperature to 5°C. On the other hand, in the case of the single-layered cold insulation and heat insulation material 50B, it is cooled to 5°C while waiting in a warehouse with a temperature of 5°C.

In this case, the 0°C class cold insulation material 55B has a weight of 1 kgf, and the 5°C class cold insulation material 55A has a weight of 0.3 kgf, so the 5°C class cold insulation material 55A can be cooled quickly to 5°C and will not drop below 5°C.

In other words, if the 5°C class cold insulation material 55A has a weight of, for example, 0.5 kgf or more, the relative weight and thickness of the 0°C class cold insulation material 55B when the 5°C class cold insulation material 55A and the 0°C class cold insulation material 55B have approximately the same area will be smaller accordingly, for example, the relative weight and thickness of the 0°C class cold insulation material 55B when the 5°C class cold insulation material 55A and the 0°C class cold insulation material 55B are approximately 200 x 300 mm, and so it takes time for the 0°C class cold insulation material 55B to cool the 5°C class cold insulation material 55A to 5°C. On the other hand, if the 5°C class cold insulation and heat insulation material 55A has a weight of 0.1 kgf or less, the relative weight and thickness of the 0°C class cold insulation and heat insulation material 55B when the 5°C class cold insulation and heat insulation material 55A and the 0°C class cold insulation and heat insulation material 55B have approximately the same area, for example, when the 5°C class cold insulation and heat insulation material 55A and the 0°C class cold insulation and heat insulation material 55B are approximately 200 x 300 mm, the relative weight and thickness of the 0°C class cold insulation and heat insulation material 55B become large, so that the 5°C class cold insulation and heat insulation material 55A is supercooled to below 5°C. Therefore, it is preferable that the weight of the 5°C class cold insulation and heat insulation material 55A is 10% to 50% (0.1 kgf to 0.5 kgf) of the weight (1 kgf) of the 0°C class cold insulation and heat insulation material 55B.
Specifically, the 0° C. class cold and heat insulating material 55B may have a content of 1000 gf, a total weight of 1180 gf (including the case), and external dimensions of 180×280×29 mm (including the case).
In addition, as the 5° C. class cold and heat insulating material 55A, one having a content volume of 300 gf, a total weight of 316 gf (including the bag), and external dimensions of 200×300×9 mm (including the sealed portion) can be used.

Next, as shown in FIG. 17D, in a warehouse at 5°C, a stack S such as a cardboard box containing contents N such as medicines (see FIG. 20 and FIG. 21) is placed in the storage space 20 of the cool/warm container 10 through a pair of opening/closing panels 12a, 12b, and then the pair of opening/closing panels 12a, 12b are closed and the container is transported from the warehouse at 5°C to a room temperature environment.

Next, the cool/heat-insulating container 10A with the basket cart is loaded as is onto a transport vehicle such as a truck and transported. The cool/heat-insulating container 10 may be removed from the basket cart 30 and only the cool/heat-insulating container 10 may be transported by the transport vehicle.

The temperature change in the storage space 20 of the cool/warm container 10 during this period is shown in Figures 17E to 17N.

Here, Figures 17E to 17G show the temperature change in the storage space 20 in the summer (outside air temperature 35°C) under unloaded conditions when no load S is stored in the storage space 20 of the cooler/heater container 10.

Of these, Figure 17E shows the temperature change in the upper part of the storage space 20 of the cool/heat-insulating container 10, Figure 17F shows the temperature change in the middle part of the storage space 20 of the cool/heat-insulating container 10, and Figure 17G shows the temperature change in the lower part of the storage space 20 of the cool/heat-insulating container 10.

The temperature measurement positions in the storage space 20 of the cold/warm container 10 at this time, i.e., the front left, rear left, center, front right, and rear right positions of the upper, middle, and lower levels in the storage space 20 of the cold/warm container 10, are shown in Figure 19.

Figures 17H and 17I show the temperature change in the storage space 20 in summer (outside air temperature 35°C) under load conditions when a load S such as a cardboard box containing contents N such as a PET bottle containing 500 ml of water is stored in the storage space 20 of the cooler/heater container 10. Note that the contents N are not limited to a PET bottle containing 500 ml of water, and the load is not limited to only a cardboard box, etc.

Of these, FIG. 17H shows the temperature change in the load S including the contents N in the first, second, third, and fourth tiers of the storage space 20 of the cool/heat-insulating container 10. Also, FIG. 17I shows the temperature change above the load S in the fourth tier of the storage space 20 of the cool/heat-insulating container 10.

The temperature measurement positions in the storage space 20 of the cool/heat-insulating container 10 at this time, i.e., the positions within the load S such as cardboard boxes containing the contents N on the first, second, third and fourth levels, and the position above the load S on the fourth level, are shown in Figures 20 and 21. Here, Figure 20 is a side view showing the cool/heat-insulating container 10, and Figure 21 is a plan view showing the cool/heat-insulating container.

Figures 17J to 17L show the temperature change in the storage space 20 in the summer (outside air temperature 10°C) under unloaded conditions when no load S is stored in the storage space 20 of the cool/warm container 10.

Of these, Figure 17J shows the temperature change in the upper level of the storage space 20 of the cool/heat-insulating container 10, Figure 17K shows the temperature change in the middle level of the storage space 20 of the cool/heat-insulating container 10, and Figure 17L shows the temperature change in the lower level of the storage space 20 of the cool/heat-insulating container 10.

The temperature measurement positions in the storage space 20 of the cold/warm container 10 at this time, i.e., the front left, rear left, center, front right, and rear right positions of the upper, middle, and lower levels in the storage space 20 of the cold/warm container 10, are shown in Figure 19.

Figures 17M and 17N also show the temperature change in the storage space 20 in summer (outside air temperature 10°C) under load conditions when a load S, such as a cardboard box containing contents N, is stored in the storage space 20 of the cool/warm container 10.

Of these, Figure 17M shows the temperature change in the load S including the contents N in the first, second, third and fourth tiers of the storage space 20 of the cool/heat-insulating container 10. Also, Figure 17N shows the temperature change above the load S in the fourth tier of the storage space 20 of the cool/heat-insulating container 10.

The temperature measurement positions in the storage space 20 of the cool/heat-insulating container 10 at this time, i.e., the positions within the load S such as cardboard boxes containing the contents N on the first, second, third and fourth levels, and the position above the load S on the fourth level, are shown in Figures 20 and 21. Here, Figure 20 is a side view showing the cool/heat-insulating container 10, and Figure 21 is a plan view showing the cool/heat-insulating container.

As shown in Figures 17E to 17N, when used in summer, the cool/heat insulation container 10 according to this embodiment has a heat transfer plate 25 on its inner surface, so that the temperature inside the storage space 20 can be stably maintained within a constant temperature range of 2°C to 5°C under both unloaded conditions in which no cargo S including contents N is stored, and loaded conditions in which cargo S including contents N is stored, and the temperature difference between the upper and lower parts of the storage space 20 can be kept small.

Next, a method for using the cold/warm container with basket cart 10A according to this embodiment in winter will be described with reference to Figures 18A to 18N.

First, prepare a cold/warm container 10A with a basket cart, which is equipped with a basket cart 30 and a cold/warm container 10 according to this embodiment (see FIG. 18A). Next, open the pair of opening/closing panels 12a, 12b on the front panel 12 of the cold/warm container 10.

Next, as shown in Fig. 18B, the cold and heat insulating material 50 is stored in the storage pocket 52 provided in the cold and heat insulating container 10. Specifically, of all the storage pockets 52, the 5°C class cold and heat insulating material 55A is stored in advance at room temperature in the storage section 52A on the storage space 20 side. Then, the 0°C class cold and heat insulating material 55B is inserted into the storage section 52B of the storage pocket 52. At this time, the 0°C class cold and heat insulating material 55B has been cooled to a temperature of -23°C and frozen in advance. The 0°C class cold and heat insulating material 55B is inserted only into the storage section 52B of the desired storage pocket 52.
That is, the 0°C class cold insulation material 55B is inserted into the storage sections 52B of a total of two storage pockets 52: the upper two of the four storage pockets 52 on the side panel 14, the upper two of the four storage pockets 52 on the side panel 15, and the third row from the bottom of the two rows and four columns of storage pockets 52 on the back panel 13.

As described above, multi-layer cold insulation material 50A is composed of 5°C class cold insulation material 55A and 0°C class cold insulation material 55B, and single-layer cold insulation material 50B is composed of a single layer of 5°C class cold insulation material 55A.

For this reason, in a storage pocket 52 in which 0°C class cold insulation material 55B is inserted into storage section 52B in addition to 5°C class cold insulation material 55A that is already inserted into storage section 52A of storage pocket 52, a multi-layer cold insulation material 50A is formed, while in a storage pocket 52 in which 0°C class cold insulation material 55B is not stored and only 5°C class cold insulation material 55A is inserted into storage section 52A, a single-layer cold insulation material 50B is formed.

Next, as shown in FIG. 18C, the cool/warm container with basket cart 10A is transported to a warehouse with a temperature of 5° C. Next, with the pair of opening/closing panels 12a, 12b open, the cool/warm container with basket cart 10A is left in the warehouse with a temperature of 5° C. for one hour.

At this time, in the multi-layered cold insulation material 50A, in addition to being cooled in the warehouse at a temperature of 5°C, the 5°C class cold insulation material 55A is cooled by the 0°C class cold insulation material 55B, which has been cooled to -23°C in advance, and the 5°C class cold insulation material 55A is rapidly cooled from room temperature to 5°C. On the other hand, in the case of the single-layered cold insulation material 50B, it is cooled to 5°C while waiting in the warehouse at 5°C.

In this case, the 0°C class cold insulation material 55B has a weight of 1 kgf, and the 5°C class cold insulation material 55A has a weight of 0.3 kgf, so the 5°C class cold insulation material 55A can be cooled quickly to 5°C and will not drop below 5°C.

Next, as shown in FIG. 18D, in a warehouse at 5°C, a stack S of cardboard boxes or the like containing contents N such as medicines is placed in the storage space 20 of the cool/warm container 10 through a pair of opening/closing panels 12a, 12b, after which the pair of opening/closing panels 12a, 12b are closed and the container is transported from the warehouse at 5°C to a room temperature environment.

Next, the cool/heat-insulating container 10A with the basket cart is loaded as is onto a transport vehicle such as a truck for transport. The cool/heat-insulating container 10 may be removed from the basket cart 30 and only the cool/heat-insulating container 10 may be transported onto the transport vehicle.

The temperature change in the storage space 20 of the cool/warm container 10 during this period is shown in Figures 18E to 18N.

Here, Figures 18E to 18G show the temperature change in the storage space 20 in winter (outside air temperature 20°C) under unloaded conditions when no load S is stored in the storage space 20 of the cool/warm container 10.

Of these, Figure 18E shows the temperature change in the upper part of the storage space 20 of the cool/heat-insulating container 10, Figure 18F shows the temperature change in the middle part of the storage space 20 of the cool/heat-insulating container 10, and Figure 18G shows the temperature change in the lower part of the storage space 20 of the cool/heat-insulating container 10.

The temperature measurement positions in the storage space 20 of the cold/warm container 10 at this time, i.e., the front left, rear left, center, front right, and rear right positions of the upper, middle, and lower levels in the storage space 20 of the cold/warm container 10, are shown in Figure 19.

Figures 18H and 18I also show the temperature change in the storage space 20 in winter (outside air temperature 20°C) under load conditions when a load S, such as a cardboard box containing contents N, is stored in the storage space 20 of the cool/warm container 10.

Of these, FIG. 18H shows the temperature change in the load S including the contents N in the first, second, third, and fourth tiers of the storage space 20 of the cool/heat-insulating container 10. Also, FIG. 18I shows the temperature change above the load S in the storage space 20 of the fourth tier of the cool/heat-insulating container 10.

20 and 21 show the temperature measurement positions in the storage space 20 of the cool/heat-insulating container 10 at this time, i.e., the positions within the load S, such as cardboard boxes containing the contents N on the first, second, third, and fourth levels, and the position above the load S on the fourth level. Here, FIG. 20 is a side view showing the cool/heat-insulating container 10, and FIG. 21 is a plan view showing the cool/heat-insulating container.

Figures 18J to 18L show the temperature change in the storage space 20 in winter (outside air temperature -5°C) under unloaded conditions when no load S is stored in the storage space 20 of the cooler/heater container 10.

Of these, Figure 18J shows the temperature change in the upper level of the storage space 20 of the cool/heat-insulating container 10, Figure 18K shows the temperature change in the middle level of the storage space 20 of the cool/heat-insulating container 10, and Figure 18L shows the temperature change in the lower level of the storage space 20 of the cool/heat-insulating container 10.

The temperature measurement positions in the storage space 20 of the cold/warm container 10 at this time, i.e., the front left, rear left, center, front right, and rear right positions of the upper, middle, and lower levels in the storage space 20 of the cold/warm container 10, are shown in Figure 19.

Figures 18M and 18N also show the temperature change in the storage space 20 in winter (outside air temperature -5°C) under load conditions when a load S, such as a cardboard box containing contents N, is stored in the storage space 20 of the cool/warm container 10.

Of these, Figure 18M shows the temperature change in the load S including the contents N in the first, second, third and fourth tiers of the storage space 20 of the cool/heat-insulating container 10. Also, Figure 18N shows the temperature change above the load S in the fourth tier of the storage space 20 of the cool/heat-insulating container 10.

The temperature measurement positions in the storage space 20 of the cool/heat-insulating container 10 at this time, i.e., the positions within the load S such as cardboard boxes containing the contents N on the first, second, third and fourth levels, and the position above the load S on the fourth level, are shown in Figures 20 and 21. Here, Figure 20 is a side view showing the cool/heat-insulating container 10, and Figure 21 is a plan view showing the cool/heat-insulating container.

As shown in Figures 18E to 18N, when used in winter, the cold/heat insulation container 10 according to this embodiment has a heat transfer plate 25 on its inner surface, so that the temperature inside the storage space 20 can be stably maintained within a constant temperature range of 2°C to 5°C under both unloaded conditions in which no load S including contents N is stored, and loaded conditions in which load S including contents N is stored, and the temperature difference between the upper and lower parts of the storage space 20 can be kept small. In this way, by arranging the cold/heat insulation material 50 in either the summer arrangement pattern or the winter arrangement pattern, the temperature inside the storage space 20 can be stably maintained within a desired temperature range under different conditions in either summer or winter.

The multiple components disclosed in the above embodiments and modifications may be combined as needed. Alternatively, some components may be deleted from all the components shown in the above embodiments and modifications.

REFERENCE SIGNS LIST 10 Cool/heat-insulating container 10A Cool/heat-insulating container with basket cart 11 Top panel 12 Front panel 12a, 12b Opening/closing panel 13 Rear panel 14 Side panel 15 Side panel 16 Bottom panel 20 Storage space 25 Heat transfer plate 30 Basket cart 31 Basket cart body 32 Wheels 40 Insulating section 41 Vacuum insulation material 42 Foam insulation material 43 Insulating outer enclosure 44 Insulating material protection member 45 Exterior fabric 50 Cool/heat-insulating material 50A Multi-layer cool/heat-insulating material 50B Single-layer cool/heat-insulating material 51 Hook-and-loop fastener 52 Storage pocket 52A, 52B Storage section 55A 5°C-class cool/heat-insulating material 55B 0°C-class cool/heat-insulating material

Claims (3)

In a cold/warm container having an internal storage space,
The device comprises a rear panel, a front panel that can be opened and closed, a pair of side panels, a top panel, and a bottom panel;
the rear panel, the front panel, the pair of side panels, and the top panel;
The bottom panels are all made of thermal insulating panels,
a heat conductor is provided on an inner surface of each of the rear panel, the pair of side panels, and the front panel;
The heat transfer body is provided with a cold insulation and heat insulation material having a two-layer storage section in which a fixed cold insulation and heat insulation material and an additional cold insulation and heat insulation material are built in,
The fixed cold insulation material is lighter than the additional cold insulation material,
The fixed cold and heat insulating material is stored in the storage section closest to the storage space of the two-layer storage section at room temperature ,
The additional cold/warm material is stored in a pre-cooled and frozen state in the other of the two-layered storage sections . The cool/warm container according to claim 1, wherein the heat transfer body has an aluminum plate. The cool/heat-insulating container according to claim 1 or 2,
A cold/warm container with a basket cart, comprising: a basket cart for storing and holding the cold/warm container.

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