Constant-temperature transportation container and method for manufacturing constant-temperature transportation container

Abstract

The purpose of the present invention is to easily manufacture a side wall surface panel composed of a foamed molding body. In a side wall surface panel (10) of a constant-temperature transportation container according to the present invention, a side surface part (11) and an accommodation part (12) are separate foamed molding bodies, the side surface part (11) has an insertion port portion (11a), the accommodation part (12) has an insertion portion (12c) inserted into the insertion port portion (11a); a protruding portion (12d) is provided on a side surface of the insertion portion (12c); and a recess portion (11b) fitted to the protruding portion (12d) is provided in an inner wall surface of the insertion port portion (11a).

Description

Constant temperature transport container and method for manufacturing constant temperature transport container

[0001] The present invention relates to a constant temperature transport container and a method for manufacturing the constant temperature transport container.

[0002] Examples of methods for transporting or storing items such as pharmaceuticals, medical devices, cells, specimens, organs, chemical substances, or food in a warm or cold state include the following: A pre-frozen or pre-solidified cold storage material or heat storage material is placed in an insulated container to form a warm transport container, and the latent heat of fusion of the cold storage material or heat storage material is used to transport or store the items contained in the constant-temperature transport container while maintaining their temperature. To maintain the items to be kept warm (hereinafter sometimes referred to as "temperature-maintained items") within a predetermined temperature range (hereinafter sometimes referred to as "controlled temperature") for a long period of time, it is considered preferable to use a constant-temperature transport container equipped with a cold storage material or heat storage material having a melting temperature within the predetermined temperature range and an insulated container.

[0003] In recent years, in the field of temperature-controlled transport packaging, a technology has been proposed in which a pallet loaded with temperature-maintained goods is created and the pallet is loaded into the temperature-controlled transport package. This technology requires a pallet-in-pallet shipper. However, in order to be able to load the pallet loaded with temperature-maintained goods, the temperature-controlled transport package inevitably becomes large.

[0004] A constant temperature transport container used in such a large constant temperature transport package is described, for example, in Patent Document 1. In the constant temperature transport container described in Patent Document 1, a heat storage material storage section into which heat storage material can be inserted from the side of the side wall panel and the top panel is provided in the wall portion of the panel. The heat storage material storage section has a rail that guides the heat storage material to the side of the side wall panel or the top panel.

[0005] U.S. Pat. No. 1,066,1969

[0006] Generally, the wall panels of constant temperature transport containers are made of insulating materials such as EPS (expanded polystyrene). The wall panels of constant temperature transport containers can also be manufactured by processing (cutting) insulating materials. However, in order to avoid waste materials, the wall panels of constant temperature transport containers are generally manufactured by filling a mold with expandable particles and foam-molding them into the shape of the wall panel.

[0007] The side wall panel described in Patent Document 1 has a rail for the heat storage material storage section provided on the wall surface, so the rail increases the thickness dimension and makes the panel very thick. Furthermore, the side wall panel described in Patent Document 1 has a shape in which a thick wall section and a thin rail are mixed. Therefore, when the side wall panel described in Patent Document 1 is manufactured by foam molding as described above, the following problem occurs.

[0008] The optimal heating time for foam molding differs between thick-walled wall portions and thin-walled rails. Therefore, if the heating time is set to be suitable for foam molding of thick-walled wall portions, the foam molding of thin-walled rails will be overheated, which increases the difficulty of molding.

[0009] Furthermore, the side wall panel described in Patent Document 1 has a protrusion on the end of the rail on the luggage compartment side to prevent the heat storage material from falling toward the luggage compartment. If a side wall panel with such a shape is foam-molded, the protrusion will get caught in the mold when the mold is released, making the molding extremely difficult.

[0010] An object of one aspect of the present invention is to provide a constant temperature transport container that allows side wall panels made of a foam molded body to be easily manufactured, and a method for manufacturing the constant temperature transport container.

[0011] In order to solve the above problems, one embodiment of the constant temperature transport container of the present invention is an assembled constant temperature transport container capable of transporting temperature-maintained items at a constant temperature, and is characterized in that it comprises three or more side wall panels, a top panel, and a bottom panel, each of the side wall panels comprising a wall portion and a storage portion for storing heat storage material therein, the wall portion and the storage portion being separate foam molded bodies, one of the wall portion and the storage portion having an insertion port portion, and the other having an insertion portion that is inserted into the insertion port portion, and one of the inner wall surface of the insertion port portion and the side surface of the insertion portion having a convex portion, and the other having a concave portion that fits into the convex portion.

[0012] In order to solve the above-mentioned problems, another aspect of the present invention provides a method for manufacturing a constant temperature transport container, which is an assembled constant temperature transport container capable of transporting temperature-maintained items at a constant temperature, and which comprises three or more side wall panels, a top panel, and a bottom panel, each of which comprises a wall portion and a storage section for storing heat storage material therein, one of the wall portion and the storage section having an insertion port portion, and the other having an insertion portion that is inserted into the insertion port portion, and one of the inner wall surface of the insertion port portion and the side surface of the insertion portion has a convex portion, and the other has a concave portion that fits into the convex portion, and which is a method for manufacturing a constant temperature transport container, characterized in that it includes a molding process in which the wall portion and the storage section are foam-molded separately.

[0013] According to one aspect of the present invention, a constant temperature transport container can be realized that allows for easy production of side wall panels made of a foam molded body.

[0014] 1 is an exploded perspective view showing a schematic configuration of a constant temperature transport container according to a first embodiment of the present invention. FIG. 3 is a perspective view showing a schematic appearance of a side wall panel provided in the constant temperature transport container according to the first embodiment of the present invention. 301 is an exploded perspective view showing a schematic configuration of the side wall panel shown in FIG. 2 , 302 is a cross-sectional view showing a connection state between the wall portion and the storage portion in the side wall panel shown in FIG. 2 , and 303 is a cross-sectional view showing another configuration of the side wall panel shown in 301, showing a connection state between the wall portion and the storage portion. FIG. 3 is a graph plotting the temperature of a cold storage material composition against time when a solidified cold storage material composition is placed in a constant temperature bath and the temperature of the constant temperature bath is increased from a cryogenic temperature at a constant temperature increase rate. FIG. 4 is an exploded perspective view showing a schematic configuration of a first modified example of a side wall panel provided in the constant temperature transport container according to the first embodiment of the present invention. 601 is an exploded perspective view showing the outline of the configuration of a modified example 2 of the side wall panel provided in the constant temperature transport container according to embodiment 1 of the present invention, 602 is a cross-sectional view showing the connection state between the wall portion and the storage portion in the side wall panel of modified example 2, and 603 is a cross-sectional view showing another configuration of the side wall panel of modified example 2 and showing the connection state between the wall portion and the storage portion. An exploded perspective view showing the outline of the configuration of the side wall panel provided in the constant temperature transport container according to embodiment 2 of the present invention.

[0015] [Summary of the Present Embodiment] As described above, when the side wall panel described in Patent Document 1 is manufactured by foam molding, there is a problem in that the molding is difficult. Therefore, in the constant temperature transport container according to the present embodiment, the side wall panel includes a wall portion and a storage portion that stores a heat storage material therein. The wall portion and the storage portion have the following configurations (1) to (3). (1) The wall portion and the storage portion are separate foam molded bodies. (2) One of the wall portion and the storage portion has an insertion port, and the other has an insertion portion that is inserted into the insertion port. (3) A convex portion is provided on one of the inner wall surface of the insertion port and the side surface of the insertion portion, and a concave portion that fits into the convex portion is provided on the other.

[0016] According to the configurations (1) and (2), the wall portion and the storage portion are separate foam molded bodies. The wall portion and the storage portion are connected by inserting the insertion portion into the insertion port, thereby forming a side wall panel for storing heat storage material. By forming the thick wall portion and the thin heat storage material storage portion as separate foam molded bodies in this way, optimal foam molding conditions can be set for the wall portion and the storage portion during foam molding. As a result, the difficulty of molding the side wall panel is reduced, facilitating the manufacture of a constant temperature transport container.

[0017] Furthermore, according to the configuration (3), the insertion portion and the insertion port portion are fitted and fixed by the convex portion and the concave portion, so that the insertion portion does not come out of the insertion port portion due to the weight of the heat storage material in the storage portion, and the heat storage material can be stably held within the storage portion.

[0018] [Embodiment 1] An embodiment of the present invention will be described in detail below. Fig. 1 is an exploded perspective view showing the schematic configuration of a constant temperature transport container 100 according to this embodiment.

[0019] 1, the constant temperature transport container 100 is a rectangular box-shaped, prefabricated container capable of transporting a temperature-maintaining item T at a constant temperature, and is composed of a container body X with an open top and a top panel 60 that closes the opening on the top of the container body X. The container body X is composed of four side wall panels 10, 20, 30, and 40 and a bottom panel 50. The side wall panels 10, 20, 30, and 40, the bottom panel 50, and the top panel 60 are made of insulating material and are rectangular in shape in a plan view.

[0020] The bottom panel 50 is composed of a rectangular plate material that can be separated from the side wall panels 10, 20, 30, and 40. The side wall panels 10, 20, 30, and 40 are also composed of rectangular plate materials. The rectangular plate materials that make up the side wall panels 10, 20, 30, and 40 are separable from one another. Here, for each of the rectangular plate materials that make up the side wall panels 10, 20, 30, and 40, the direction that defines the thickness is referred to as the thickness direction, and the direction that defines the vertical height when the panel is erected relative to the bottom panel 50 is referred to as the height direction. The directions perpendicular to both the height direction and the thickness direction are referred to as the lateral, horizontal, or width direction. With respect to the side wall panels 10 to 40, the bottom panel 50, and the top panel 60, the cargo compartment side of the constant temperature transport container 100 is referred to as the inside, and the side opposite the inside is referred to as the outside.

[0021] The side wall panels 10, 20, 30, and 40 are connected to the bottom panel 50 by known connecting means. For example, the side wall panels 10, 20, 30, and 40 are connected to the bottom panel 50 by a concave-convex structure. In this case, a concave-convex fitting structure is formed between the lower end of each of the side wall panels 10, 20, 30, and 40 and the portion of the bottom panel 50 facing the lower end. In addition, the upper end of each of the side wall panels 10, 20, 30, and 40 is structured to fit with the top panel 60.

[0022] 1 , the side wall panel 10 includes a wall portion 11, which is the panel main body, and a storage section 12 for storing the storage material P, which is a heat storage material. The storage section 12 is provided with an insertion opening 12A for inserting the storage material P from the side of the side wall panel 10. The insertion opening 12A is provided on one side surface of the side wall panel 10. Similarly, the side wall panels 20, 30, and 40 include wall portions 21, 31, and 41, respectively, and storage sections 22, 32, and 42 for storing the storage material P, which is a heat storage material. The storage sections 22, 32, and 42 are each provided with an insertion opening for inserting the storage material P. Therefore, the constant temperature transport container 100 according to this embodiment also includes within its scope a configuration including the storage material P stored in the storage sections 12, 22, 32, and 42. Furthermore, the constant temperature transportation container 100 according to this embodiment also includes a configuration in which a temperature-maintaining item T is housed within the constant temperature transportation container 100.

[0023] Next, the configuration of the side wall panels 10 to 40 will be described. Note that the following description will focus on the configuration of the side wall panel 10. The side wall panels 20 to 40 have the same configuration as the side wall panel 10, so their description will be omitted. Figure 2 is a perspective view showing the outline of the exterior of the side wall panel 10.

[0024] As shown in Fig. 2, the storage section 12 is provided with a rail section 12a that guides the stored material P. The rail section 12a is configured to guide the stored material P laterally from the insertion opening 12A of the storage section 12. The rail section 12a has an elongated shape that protrudes from the inner surface of the wall section 11 and extends laterally. The stored material P slides on the upper or lower surface of the rail section 12a.

[0025] Five rail portions 12a are provided in parallel with each other in the height direction of the wall portion 11. The distance between adjacent rail portions 12a in the height direction is the same as or greater than the height dimension of the storage material P. In the configuration shown in Fig. 2, the storage section 12 is configured to be able to store storage material P in four stages in the height direction.

[0026] However, in the constant temperature transport container according to this embodiment, the configuration of the storage section of the side wall panel is not limited to the configuration shown in Fig. 2 and can be set appropriately depending on the dimensions of the side wall panel, the dimensions of the stored items, the size of the temperature-maintaining items T stored in the luggage compartment, etc. Furthermore, the configuration of the rail section is not limited to the configuration shown in Fig. 2 as long as it allows the stored items to slide and guide the stored items. For example, the configuration may be such that the spaces between the rail sections are connected in the height direction. In this configuration, the rail sections are provided with through-holes that penetrate in the height direction, or the rail sections are composed of multiple components lined up at a distance from each other on the sides.

[0027] As shown in FIG. 2 , the rail portion 12a has a support portion 12b for supporting the stored items P on the rail portion 12a. The support portion 12b is provided at the inner end of the rail portion 12a. At the inner end of the rail portion 12a, the support portion 12b is formed as a convex strip that protrudes from the upper or lower surface of the rail portion 12a. The convex strip extends along the extension direction of the rail portion 12a. With this configuration, even if the stored items P placed on the rail portion 12a fall inward, the support portion 12b will lock the stored items P. Therefore, the support portion 12b can prevent the stored items P from falling into the cargo compartment. The convex strip of the support portion 12b may have any dimension that can prevent the stored items P from falling inward, and can be set appropriately depending on the dimensions of the stored items P, etc.

[0028] 301 in Fig. 3 is an exploded perspective view showing a schematic configuration of the side wall panel 10. 302 in Fig. 3 is a cross-sectional view showing the connection state between the wall portion 11 and the storage portion 12 in the side wall panel 10. 303 in Fig. 3 is a cross-sectional view showing another configuration of the side wall panel 10 of 301 in Fig. 3, showing the connection state between the wall portion 11-1 and the storage portion 12-1 in the side wall panel 10-1.

[0029] As shown in 301 in Fig. 3 , in the side wall panel 10, the wall portion 11 and the storage portion 12 are separate foam molded bodies. In other words, the wall portion 11 and the storage portion 12 are separable foam molded bodies. The terms "separate foam molded bodies" or "separable foam molded bodies" used here do not refer to bodies foam molded using a single mold, but rather to bodies molded using separate molds for the wall portion 11 and the storage portion 12. Therefore, the wall portion 11 is foam molded using a mold for the wall portion 11, and the storage portion 12 is foam molded using a mold for the storage portion 12.

[0030] The wall portion 11 and the storage portion 12 are connected via the insertion port 11a and the insertion port 12c. The insertion port 12c is a convex portion that protrudes outward (toward the wall portion 11) from the outer end of the rail portion 12a. Multiple insertion ports 12c are provided laterally and spaced apart from each other. From the viewpoint of ease of demolding the foamable molded body from the mold, it is preferable that the height dimension of the insertion ports 12c be smaller than or equal to that of the rail portion 12a. Multiple insertion ports 11a are provided on the inner surface of the wall portion 11 to correspond to the insertion ports 12c. The insertion ports 11a are recesses recessed outward from the inner surface of the wall portion 11. From the viewpoint of calculation of the connection state between the wall portion 11 and the storage portion 12, it is preferable that the dimensions of the recesses of the insertion port 11a be approximately the same as the dimensions of the insertion ports 12c.

[0031] As described above, in the constant temperature transport container 100 according to this embodiment, the wall portion 11 and the storage portion 12 are separate foam molded bodies. The wall portion 11 has an insertion port 11a, and the storage portion 12 has an insertion port 12c that is inserted into the insertion port 11a. That is, in the constant temperature transport container 100, the side wall panel 10 is formed by connecting the separate wall portion 11 and the storage portion 12 via the insertion port 11a and the insertion port 12c. With this configuration, since the wall portion 11 and the storage portion 12 are separate foam molded bodies, optimal foam molding conditions can be set for each of the wall portion 11 and the storage portion 12 when manufacturing the side wall panel 10 by foam molding. As a result, the difficulty of molding the side wall panel 10 is reduced, and the constant temperature transport container 100 is easier to manufacture.

[0032] In particular, even if the side wall panel 10 is large, the wall portion 11 and the storage portion 12 are separate foam molded bodies, so the side wall panel can be molded evenly. Furthermore, even if the storage portion 12 has a protrusion such as the support portion 12b, it can be released from the mold.

[0033] In the constant temperature transport container 100 according to this embodiment, it is sufficient that one of the wall surface portion 11 and the storage portion 12 has an insertion port 11a, and the other has an insertion port 12c that is inserted into the insertion port 11a. Therefore, the insertion port 11a may be provided on the rail portion 12a of the storage portion 12, and the insertion port 12c may be provided on the wall surface portion 11. With this configuration, the wall surface portion 11 and the storage portion 12, which are separate from each other, can be connected via the insertion port 11a and the insertion port 12c. Note that, from the viewpoints of thinning the rail portion 12a of the storage portion 12 and stably connecting the wall surface portion 11 and the storage portion 12, it is preferable that the wall surface portion 11 has the insertion port 11a and the storage portion 12 has the insertion port 12c.

[0034] As shown in FIG. 3 , the side wall panel 10 has a recess 11b in the insertion port 11a of the wall portion 11. The insertion port 12c of the storage portion 12 has a protrusion 12d. The recess 11b is a minute recess and is provided at two locations, one on the upper side and one on the lower side, on the inner wall surface of the insertion port 11a. The protrusion 12d is a minute protrusion and is provided at a location on the insertion port 12c facing the recess 11b of the insertion port 11a. The recess 11b and the protrusion 12d fit together. Therefore, in the storage portion 12, the insertion port 12c does not come off the insertion port 11a due to the weight of the stored material P, and the connection between the wall portion 11 and the storage portion 12 is strong. As a result, the constant temperature transport container 100 can stably hold the stored material P in the storage portion 12.

[0035] 3, two recesses 11b and two protrusions 12d are provided. However, in the constant temperature transport container 100 according to this embodiment, the number of recesses 11b and the number of protrusions 12d are not particularly limited as long as the stored material P can be stably held in the storage section 12. The number of recesses 11b and the number of protrusions 12d may be one each.

[0036] In the constant temperature transport container 100 according to this embodiment, a convex portion may be provided on one of the inner wall surface of the insertion port and the side surface of the insertion port, and a concave portion that fits into the convex portion may be provided on the other. For example, as shown in 303 in FIG. 3, in the side wall panel 10-1, a convex portion 11-1b may be provided on the inner wall surface of the insertion port 11-1a in the wall portion 11-1. In this case, a concave portion 12-1d that fits into the convex portion 11-1b is provided on the side surface of the insertion portion 12-1c in the storage portion 12-1. Even with the configuration shown in 303 in FIG. 3, the insertion portion 12-1c will not come off the insertion port 11-1a due to the weight of the stored material P, and the connection between the wall portion 11-1 and the storage portion 12-1 is strong.

[0037] From the viewpoint of ease of release from the mold during foam molding, it is preferable that the insertion port portion 11a is provided with a recess 11b and the insertion portion 12c is provided with a protrusion 12d, as shown in 302 in FIG.

[0038] Furthermore, the dimensions of the recessed and protruding portions are not particularly limited as long as they are dimensions that allow the recessed and protruding portions to fit together. From the viewpoint of mold releasability during foam molding, for example, in the configurations shown in 301 and 302 in Figure 3, the height of the protruding portion 12d and the depth of the recessed portion 11b may be 3.0 mm or less.

[0039] (Regarding Materials for the Side Wall Panels 10-40, Bottom Panel 50, and Top Panel 60) The material for the side wall panels 10-40 of the constant temperature transport container 100 is not particularly limited as long as it has thermal insulation properties and is foam-moldable, and foamed plastic is preferably used. Specific examples of foamed plastic include foamed polystyrene-based, polyethylene-based, polypropylene-based, polyurethane-based, and poly(3-hydroxyalkanoate)-based resins. Furthermore, foamed plastics containing a radiation heat transfer inhibitor are preferred because of their excellent thermal insulation properties. For example, carbon-containing bead foam molded bodies containing carbon that can act as a radiation heat transfer inhibitor are exemplified. Examples of carbon include graphite, graphene, activated carbon, coke, and carbon black. Graphite and carbon black are preferred from the perspective of balancing cost and thermal insulation improvement effects, with graphite being more preferred.

[0040] Furthermore, the material may be a combination of two or more types of foamed plastics, such as a combination of foamed polyethylene and foamed polystyrene.

[0041] In particular, when the side wall panel is made of foam plastic, the wall portion and the storage portion are connected by inserting the plug into the plug, so no adhesive or the like is used to connect the wall portion and the storage portion. Therefore, when recycling the foam plastic from the side wall panel, it is not necessary to remove the adhesive or the like. This contributes to achieving Goal 12 of the United Nations' Sustainable Development Goals (SDGs).

[0042] Furthermore, the material may be a combination of foamed plastic and vacuum insulation material. In this case, a transport container with high thermal insulation performance can be obtained by covering the outer or inner surfaces of the container body X and / or the top panel 60 made of foamed plastic with vacuum insulation material, or by embedding vacuum insulation material inside the walls that make up the container body X and the top panel 60.

[0043] The material for the bottom panel 50 and the top panel 60 is not particularly limited as long as it has thermal insulation properties, and the materials for the side wall panels 10 to 40 described above can be used. Furthermore, the material for the bottom panel 50 and the top panel 60 may be a vacuum insulation material. Examples of vacuum insulation materials include those that use silica powder, glass wool, glass fiber, etc. as a core material.

[0044] (Regarding the storage material P) The storage material P is a heat storage material. Here, the heat storage material includes not only the heat storage material itself but also a cold storage material. That is, the storage material P is at least one of a heat storage material and a cold storage material. A heat storage material or a cold storage material is a heat storage component or a cold storage component sealed in a plastic container, a film bag, or the like.

[0045] The material of the container or bag into which the heat storage component or cold storage component is filled is not particularly limited, and examples thereof include polyethylene, polypropylene, polyethylene terephthalate, polystyrene, polyvinyl chloride, nylon, polyester, etc. One of these materials may be used alone, or a multilayer structure made by combining two or more of these materials may be used to improve heat resistance and barrier properties. The shape of this container or bag is also not particularly limited, but a shape that can ensure a large surface area is preferred from the perspective of improving the heat exchange rate.

[0046] Furthermore, it is preferable that the storage material P is at least one of a latent heat storage material and a cold storage material. A latent heat storage material or cold storage material utilizes thermal energy accompanying a phase transition of a heat storage component or a cold storage component, and utilizes thermal energy absorbed when the phase state of the heat storage component or the cold storage component transitions from a solidified state (solid) to a molten state (liquid), or thermal energy released when the phase state transitions from a molten state (liquid) to a solidified state (solid).

[0047] The solidification / melting temperature of a heat storage component or a cold storage component is the temperature at which its phase state changes from a solidified state (solid) to a molten state (liquid), or from a molten state (liquid) to a solidified state (solid). In this specification, the "melting temperature" of a cold storage material composition means "the temperature that the solid cold storage material composition exhibits when it melts and liquefies." The above "melting temperature" will be explained more specifically using FIG. 4. FIG. 4 is a graph plotting the temperature of the cold storage material composition against time when the solidified cold storage material composition is placed in a thermostatic bath and the temperature of the thermostatic bath is increased from an extremely low temperature at a constant temperature increase rate. As shown in FIG. 4, compared to the temperature of the thermostatic bath, which increases at a constant rate, the temperature of the cold storage material composition changes in the following order (1) to (3): (1) increases at a constant rate; (2) increases at a temperature T １ At temperature T １ From temperature T ２ (3) maintain the temperature T ２ The temperature T １ is called the "melting onset temperature" and the temperature T ２ is called the "end of melting temperature". １ and temperature T ２ The temperature T at the midpoint of ３ is defined herein as the "melting temperature."

[0048] The phase state generally refers to the three phase states of a substance: solid, liquid, and gas, but in this embodiment, the solid and liquid phase states are used. The phase state of the heat storage component or cold storage component refers to a phase state of 50% or more by weight, for example, a phase state in which 80% by weight of the heat storage component is solid and 20% by weight is liquid is solid (solidified state).

[0049] The composition constituting the latent heat storage component or cold storage component used in this embodiment is not particularly limited, and for example, the compositions disclosed in International Publication No. 2014 / 125878, International Publication No. 2019 / 151074, International Publication No. 2016 / 068256, International Publication No. 2019 / 172260, International Publication No. 2018 / 180506, etc. can be used.

[0050] The constant temperature transport container according to this embodiment may contain one type of heat storage material and / or cold storage material (either a heat storage material or a cold storage material, or both). When the outside air temperature is lower than the control temperature, such as in winter, the temperature is adjusted to a temperature higher than the freezing / melting temperature of the heat storage material and / or cold storage material to be contained and placed in a molten state. In this case, the heat storage material and / or cold storage material is cooled by the outside air temperature, lowering its temperature, and releasing thermal energy to undergo a phase transition from a molten state (liquid) to a solidified state (solid). This prevents the temperature-retaining item from being exposed to the outside air and allows the temperature to be maintained within a predetermined range.

[0051] On the other hand, when the outside air temperature is higher than the control temperature, such as in summer, the temperature is adjusted to a temperature lower than the freezing / melting temperature of the heat storage material and / or cold storage material to be stored and placed, and the material is placed in a solidified state. In this case, the heat storage material and / or cold storage material is heated by the outside air temperature and rises in temperature, and absorbs thermal energy to undergo a phase transition from a solidified state (solid) to a molten state (liquid), thereby preventing the temperature retention item from being exposed to the outside air and maintaining the temperature within a predetermined range.

[0052] When one of these heat storage materials and / or cold storage materials is used, the influence of temperature rise and fall due to the temperature difference with the outside air can be suppressed by the release / absorption of latent heat energy possessed by the single heat storage material and / or cold storage material component via the insulating material constituting the constant temperature transport container (for example, a wall panel such as the side wall panel 10 shown in Figure 1), and the temperature can be maintained within a predetermined temperature range for a certain period of time. However, it is necessary to adjust the heat storage material and / or cold storage material to a specified temperature in advance relative to the external environmental temperature, which is cumbersome, and the quantity / weight of the heat storage material and cold storage material used tends to increase in order to maintain the temperature for a long period of time.

[0053] Furthermore, in this embodiment, multiple heat storage materials with different melting temperature ranges may be used. The constant temperature transport container according to this embodiment can accommodate two or more types of heat storage materials and / or cold storage materials with different solidification and melting states. For example, when using a first heat storage material or cold storage material (a) and a second heat storage material or cold storage material (b) to maintain the same temperature control conditions throughout the year regardless of the outside air temperature, the following combination of heat storage materials is exemplified. The heat storage material or cold storage material closest to the temperature-retaining product (hereinafter sometimes referred to as heat storage material or cold storage material P1) uses the first heat storage material or cold storage material (a) whose solidification and melting temperatures are near the control temperature and in a molten state, and the heat storage material or cold storage material (hereinafter sometimes referred to as heat storage material or cold storage material P2) located on the outer periphery of the first heat storage material or cold storage material (a) uses the second heat storage material or cold storage material (b) whose solidification and melting temperature is 0°C or lower and in a solidified state.

[0054] Furthermore, when a first heat storage material or cold storage material (a) and a second heat storage material or cold storage material (b) are used, the first heat storage material or cold storage material (a) may be regulated to be in a melted state at a temperature higher than the control temperature, and the second heat storage material or cold storage material (b) may be solidified and frozen at a temperature equal to or lower than the melting temperature of the second heat storage material or cold storage material (b). In this case, the first heat storage material or cold storage material (a) is used as the heat storage material or cold storage material P1 closest to the temperature-keeping item, and the second heat storage material or cold storage material (b) is used as the heat storage material or cold storage material P2. The second heat storage material or cold storage material (b), arranged outside the first heat storage material or cold storage material (a), functions as a thermal buffer against the outside air temperature to maintain the temperature of the temperature-keeping item within a desired temperature range.

[0055] When two or more types of heat storage materials and / or cold storage materials with different solidified and melted states are used, the effects of temperature rise and fall due to the temperature difference with the outside air can be suppressed by using a second heat storage material or cold storage material (b) arranged outside the first heat storage material or cold storage material (a) arranged adjacent to the temperature-retaining product, acting as a thermal buffer through the insulating material that constitutes the container. Furthermore, due to the temperature interaction between the first heat storage material or cold storage material (a) and the second heat storage material or cold storage material (b), the first heat storage material or cold storage material (a) in the molten state is cooled and its temperature drops, releasing thermal energy to undergo a phase transition from the molten state (liquid) to the solidified state (solid), thereby protecting the temperature-retaining product from both higher and lower temperatures. As a result, the amount of heat storage material or cold storage material used can be reduced, and the temperature-retaining product can be maintained within a specified temperature range for a longer period of time.

[0056] When two types of heat storage material and / or cold storage material with different solidification / melting states are used, as a specific example, the heat storage material or cold storage material with a melting temperature adjusted to around 5°C or 20°C is contained in the inner storage material, and the heat storage material or cold storage material with a melting temperature adjusted to 0°C is contained in the outer storage material.

[0057] Furthermore, the storage material P is not particularly limited as long as it has a shape that can be accommodated in the storage section of the side wall panel. For example, the storage material P may be configured such that one type of heat storage component and / or cold storage component is accommodated in one elongated container that can fit into the storage section of the side wall panel.

[0058] From the viewpoint of versatility of the heat storage material and / or cold storage material, the storage material P is preferably a connected body in which a plurality of heat storage materials and / or cold storage materials are connected. This improves workability during packing, and the storage material P can be configured to accommodate a plurality of constant temperature transport containers of different sizes. As a result, the versatility of the storage material P is increased.

[0059] (Regarding the dimensions of the constant temperature transport container) The constant temperature transport container according to this embodiment is preferably used in a technique in which a pallet loaded with temperature-maintained items is prepared and the pallet is loaded into a constant temperature transport package. In order to load the pallet loaded with temperature-maintained items, the constant temperature transport container according to this embodiment is preferably large.

[0060] Therefore, in the constant temperature transport container according to this embodiment, the height of the side wall panel is preferably 300 mm to 2500 mm, more preferably 500 mm to 2000 mm, and particularly preferably 900 mm to 1700 mm. The width of the side wall panel is preferably 500 mm to 3000 mm, more preferably 700 mm to 2500 mm, and particularly preferably 1000 mm to 2000 mm. The thickness of the side wall panel (including the wall portion and the storage portion) is preferably 20 mm to 400 mm, more preferably 50 mm to 300 mm, and particularly preferably 100 mm to 250 mm. Specific dimensions of the side wall panel include, for example, a height of 1180 mm, a width of 1250 mm, and a thickness of 200 mm (wall portion: 120 mm + storage portion: 80 mm).

[0061] The dimensions of the bottom panel and the top panel are not particularly limited, but may be set to form a rectangular box shape according to the dimensions of the side wall panels. The thickness (height dimension) of the bottom panel and the top panel is preferably equal to the thickness of the side wall panels.

[0062] (Modification 1) A modification of the side wall panel provided in the constant temperature transport container according to this embodiment will be described below. Fig. 5 is an exploded perspective view showing the outline of the configuration of a side wall panel 10-2 as modification 1.

[0063] In the side wall panel 10-2, the insertion port 11-2a of the wall portion 11-2 is provided as a single groove extending laterally, and the insertion portion 12-2c of the storage portion 12-2 is provided as a single protrusion protruding outward from the outer end of the rail portion 12a.

[0064] The protrusion 12-2d is formed as a single protrusion that protrudes upward or downward from the outer end of the insertion portion 12-2c. Although not shown, the insertion port 11-2a of the wall portion 11-2 has a recess that fits into the protrusion 12-2d and functions as a groove.

[0065] (Variation 2) Another variation of the side wall panel provided in the constant temperature transport container according to this embodiment will be described. 601 in Fig. 6 is an exploded perspective view showing the schematic configuration of a side wall panel 10-3 as variation 2. 602 in Fig. 6 is a cross-sectional view showing the connection state between the wall portion 11-3 and the storage portion 12-3 in the side wall panel 10-3.

[0066] In the side wall panel 10-3, an insertion portion 11-3a is provided on the inner surface of the wall portion 11-3. The insertion portion 11-3a is provided as a single protrusion that protrudes inward from the inner surface of the wall portion 11-3. In addition, an insertion port 12-3c is provided on the rail portion 12-3a of the storage portion 12-3 to correspond to the insertion portion 11-3a. The insertion port 12-3c is provided as a single groove that extends laterally at the outer end of the rail portion 12-3a.

[0067] As shown in 602 in FIG. 6, the side wall panel 10-3 has a protrusion 11-3b on the insertion portion 11-3a of the wall portion 11-3. A recess 12-3d is provided on the insertion port 12-3c of the storage portion 12-3. The recesses 12-3d are provided at two locations, one on the upper side and one on the lower side, on the inner wall surface of the insertion port 12-3c. The protrusion 11-3b is provided on the insertion portion 11-3a at a location facing the recess 12-3d of the insertion port 12-3c. The protrusion 11-3b and the recess 12-3d fit together.

[0068] 6 shows another configuration of the side wall panel 10-3 of 601 in FIG. 6, and is a cross-sectional view showing the connection state between the wall portion 11-4 and the storage portion 12-4 in the side wall panel 10-4. As shown in 603 in FIG. 6, in the side wall panel 10-4, a convex portion 12-4d may be provided on the inner wall surface of the insertion portion 12-4c in the storage portion 12-4. In this case, a concave portion 11-4b that fits with the convex portion 12-4d is provided on the side surface of the insertion portion 11-4a in the wall portion 11-4.

[0069] (Number of Side Wall Panels) In the constant temperature transport container 100 according to this embodiment shown in FIG. 1 , the container body X is composed of four side wall panels 10, 20, 30, and 40 and a bottom panel 50. However, in the constant temperature transport container according to this embodiment, the number of side wall panels may be three or more. That is, the constant temperature transport container according to this embodiment is not limited to a rectangular parallelepiped container as shown in FIG. 1 , but may be any prismatic container composed of three or more side wall panels, one bottom panel, and one top panel. Therefore, the constant temperature transport container according to this embodiment may be a triangular prism-shaped container or a hexagonal prism-shaped container.

[0070] (Manufacturing Method of Constant Temperature Transport Container According to the Present Embodiment) The constant temperature transport container that is the subject of the manufacturing method according to the present embodiment is not limited to the configuration of the constant temperature transport container described above. The constant temperature transport container is an assembled constant temperature transport container that can transport temperature-maintained items at a constant temperature, and it is sufficient that the container includes: (a) three or more side wall panels, a top panel, and a bottom panel; (b) each of the side wall panels includes a wall portion and a storage section that stores a heat storage material therein; and (c) the wall portion and the storage section have the following configurations (2) and (3): (2) one of the wall portion and the storage section has an insertion port, and the other has an insertion port that is inserted into the insertion port; and (3) one of the inner wall surface of the insertion port and the side surface of the insertion port is provided with a protrusion, and the other is provided with a recess that fits into the protrusion. An example of such a constant temperature transport container is the constant temperature transport container 100 shown in FIG. 1. Furthermore, a constant temperature transport container equipped with the side wall panel 10 shown in Fig. 2, the side wall panel 10-1 shown in 303 in Fig. 3, the side wall panel 10-2 shown in Fig. 5, or the side wall panel 10-3 shown in Fig. 6 can also be a constant temperature transport container that is a target of the manufacturing method according to this embodiment. Hereinafter, the manufacturing method according to this embodiment will be described using the constant temperature transport container 100 shown in Fig. 1 (the constant temperature transport container 100 equipped with the side wall panel 10 shown in Fig. 2) as an example.

[0071] The manufacturing method according to this embodiment is characterized by including a molding step in which the wall portion 11 and the storage portion 12 are foam-molded separately. According to the above configuration, when manufacturing the side wall panel 10 by foam molding, the wall portion 11 and the storage portion 12 are foam-molded separately in the molding step. Therefore, when foam-molding the thick wall portion 11 and the thin heat storage material storage portion 12, optimal foam molding conditions can be set for each of the wall portion 11 and the storage portion 12. As a result, according to the above configuration, the difficulty of molding the side wall panel 10 is reduced, and the constant temperature transport container 100 is easily manufactured.

[0072] The manufacturing method according to this embodiment may include a heat storage material accommodating step of accommodating a storage material P, which is a heat storage material, in the accommodating section 12. Furthermore, in the manufacturing method according to this embodiment, the storage material P may be two or more types having different melting temperature ranges.

[0073] The manufacturing method according to this embodiment may also include an article containing step of containing the temperature-maintaining article T in the constant temperature transportation container 100 .

[0074] The dimensions of the constant temperature transport container to be manufactured by the method according to the present embodiment are not particularly limited, but may be, for example, the dimensions described above (Regarding the dimensions of the constant temperature transport container). Specific dimensions of the side wall panel can be, for example, a height of 1180 mm, a width of 1250 mm, and a thickness of 200 mm (wall portion: 120 mm + storage portion: 80 mm).

[0075] [Embodiment 2] Another embodiment of the present invention will be described below. For ease of explanation, the same reference numerals will be used to designate components having the same functions as those described in the above embodiment, and the description thereof will not be repeated.

[0076] 7 is an exploded perspective view showing the schematic configuration of the side wall panel 10-5 provided in the constant temperature transport container according to this embodiment. As shown in FIG. 7, the constant temperature transport container according to this embodiment differs from the first embodiment in that the side wall panel 10-5 is configured so that the heat storage material can be inserted from above.

[0077] The storage section 17 of the side wall panel 10-5 includes multiple vertical members 15 and one horizontal member 16. The vertical members 15 and horizontal member 16 are rectangular plate-shaped. The vertical members 15 and horizontal member 16 protrude from the inner surface of the wall section 11-5. The multiple vertical members 15 are arranged along the height direction so that their lower ends are at the same position in the height direction and are parallel to each other at equal intervals. The horizontal member 16 is arranged in contact with the lower ends of the multiple vertical members 15 and extends laterally. The multiple vertical members 15 and horizontal members 16 form the storage section 17, which is open at the top and inside and has a space partitioned by the vertical members 15 on the sides. A storage material, which is a heat storage material, is inserted into the storage section 17 through the upper opening.

[0078] In the storage section 17, the vertical members 15 function as guide rails that guide the storage material downward, while the horizontal members 16 function as receiving sections that receive the inserted storage material.

[0079] The vertical member 15 is equipped with a vertical rail portion 15a that guides the stored material. The vertical rail portion 15a is configured to guide the stored material downward. The vertical rail portion 15a has a support portion 15b that supports the stored material. The support portion 15b is provided at the end portion on the inside of the vertical rail portion 15a. At the inside end portion of the vertical rail portion 15a, the support portion 15b is formed as a convex rib that protrudes laterally from at least one of the two side surfaces of the vertical rail portion 15a. The convex rib extends along the extension direction of the vertical rail portion 15a.

[0080] The cross member 16 has a receiving portion 16a that receives the stored material. The receiving portion 16a has a support portion 16b for supporting the stored material. The support portion 16b is provided at the end portion on the inside of the receiving portion 16a. At the inner end portion of the receiving portion 16a, the support portion 16b is formed as a ridge that protrudes upward from the upper surface of the receiving portion 16a. The ridge extends along the extension direction of the receiving portion 16a.

[0081] Even if the stored items placed between the vertical rails 15a fall inward, the support sections 15b and 16b will lock the stored items in place, thereby preventing the stored items from falling into the luggage compartment.

[0082] In the side wall panel 10-5, the wall portion 11-5, the vertical member 15, and the horizontal member 16 are separate foam molded bodies.

[0083] The wall surface portion 11-5 and the vertical member 15 are connected via the insertion port portion 13 and the insertion portion 15c. The insertion port portion 13 is a recessed portion provided on the inner surface of the wall surface portion 11-5. The insertion port portions 13 are provided in multiple rows in the height direction, spaced apart from each other. The multiple rows of insertion port portions 13 are arranged side by side at equal intervals so that their lower ends are at the same position in the height direction. The insertion portion 15c is a protrusion provided on the vertical member 15. The insertion portion 15c of one vertical member 15 is inserted into one row of insertion port portions 13. In one vertical member 15, the insertion portions 15c are provided to correspond to one row of insertion port portions 13.

[0084] The wall portion 11-5 and the horizontal member 16 are connected via the insertion portion 14 and the insertion portion 16c. The insertion portion 14 is a recess provided on the inner surface of the wall portion 11-5 below the multiple rows of insertion portions 13. The insertion portions 14 are provided in a single row on the side, spaced apart from each other. The insertion portion 16c is a protrusion provided on the horizontal member 16. The insertion portion 16c on the horizontal member 16 is provided to correspond to the insertion portion 14 on the wall portion 11-5.

[0085] Even in the constant temperature transport container according to this embodiment, the wall portion 11-5, the vertical members 15, and the horizontal members 16 are separate foam molded bodies, so when manufacturing the side wall panel 10-5 by foam molding, it is possible to set optimal foam molding conditions for each of the wall portion 11-5, the vertical members 15, and the horizontal members 16. As a result, the difficulty of molding the side wall panel 10-5 is reduced, and the constant temperature transport container is easier to manufacture.

[0086] In the side wall panel 10-5, the insertion portion 15c of the vertical member 15 is provided with a protrusion 15d. The protrusion 15d is formed to protrude laterally from at least one of the two side surfaces of the insertion portion 15c. Although not shown, the inner wall surface of the insertion opening 13 of the wall portion 11-5 is provided with a recess that fits with the protrusion 15d of the insertion portion 15c.

[0087] In the side wall panel 10-5, the insertion portion 16c of the horizontal member 16 is provided with a protrusion 16d. The protrusion 16d of the insertion portion 16c is formed to protrude from at least one of the upper and lower surfaces of the insertion portion 15c. Although not shown, the inner wall surface of the insertion opening 14 of the wall portion 11-5 is provided with a recess that fits with the protrusion 16d of the insertion portion 16c.

[0088] According to the constant temperature transport container of this embodiment, as described above, the insertion portion 15c of the vertical member 15 and the insertion port 13 of the wall portion 11-5 are fitted together in a concave-convex manner, and the insertion portion 16c of the horizontal member 16 and the insertion port 14 of the wall portion 11-5 are fitted together in a concave-convex manner. This allows the stored material to be stably held within the storage portion 17.

[0089] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention.

[0090] [Summary] The constant temperature transport container according to aspect 1 of the present invention is an assembled constant temperature transport container 100 capable of transporting a temperature-maintaining item T at a constant temperature, and comprises three or more side wall panels (side wall panels 10, 20, 30, and 40), a top panel 60, and a bottom panel 50. Each of the side wall panels comprises a wall portion (wall portion 11) and a storage portion (storage portion 12) that stores a heat storage material (storage material P) therein. The wall portion and the storage portion are separate foam molded bodies. One of the wall portion and the storage portion has an insertion port portion (insertion port portion 11a), and the other has an insertion portion (insertion portion 12c) that is inserted into the insertion port portion. A convex portion (convex portion 12d) is provided on one of the inner wall surface of the insertion port portion and the side surface of the insertion portion, and a concave portion (convex portion 11b) that fits into the convex portion is provided on the other.

[0091] The constant temperature transport container according to aspect 2 of the present invention is configured in such a manner that, in aspect 1, the wall portion (wall portion 11) has the insertion portion (insertion portion 11a), and the storage portion (storage portion 12) has the insertion portion (insertion portion 12c).

[0092] The constant temperature transport container according to aspect 3 of the present invention is configured in such a manner that, in aspect 1 or 2, the convex portion (convex portion 12d) is provided on the side surface of the insertion portion (insertion portion 12c), and the concave portion (concave portion 11b) is provided on the inner wall surface of the insertion port portion (insertion port portion 11a).

[0093] The constant temperature transport container according to aspect 4 of the present invention is configured such that, in any of aspects 1 to 3, the storage section (storage section 12) has rails (rail sections 12a) for guiding the heat storage material (storage material P), and the rails have support sections (support sections 12b) for supporting the heat storage material.

[0094] A constant temperature transport container according to aspect 5 of the present invention is any of aspects 1 to 4, wherein the storage section comprises a plurality of vertical members (15) and one horizontal member (16), the vertical members (15) and the horizontal member (16) are rectangular plate-shaped and protrude from the inner surface of the wall portion (11-5), the vertical members (15) are arranged along the height direction so that their lower ends are at the same position in the height direction and are parallel to each other at equal intervals, and the horizontal member (16) is arranged in contact with the lower ends of the vertical members (15) and extends laterally.

[0095] A constant temperature transport container according to aspect 6 of the present invention is configured such that, in any of aspects 1 to 5, the side wall panels (side wall panels 10, 20, 30, and 40) have a height of 300 mm to 2500 mm, a width of 500 mm to 3000 mm, and a thickness of 20 mm to 400 mm.

[0096] A constant temperature transport container according to a seventh aspect of the present invention is any one of the first to sixth aspects, and further comprises a heat storage material (storage material P) stored in the storage section (storage section 12).

[0097] A constant temperature transport container according to an eighth aspect of the present invention is the same as in the seventh aspect, in which the heat storage material (storage material P) is made of two or more types of materials having different melting temperature ranges.

[0098] A constant temperature transport container according to a ninth aspect of the present invention is the container of any one of the first to eighth aspects, wherein the number of the side wall panels (side wall panels 10, 20, 30, and 40) is four.

[0099] A constant temperature transport container according to a tenth aspect of the present invention is configured in any one of the first to ninth aspects, in which a temperature-retaining item T is housed.

[0100] A method for manufacturing a constant temperature transport container according to aspect 11 of the present invention is a method for manufacturing a constant temperature transport container, which is an assembled constant temperature transport container capable of transporting a temperature-maintaining item T at a constant temperature, and which comprises three or more side wall panels (side wall panels 10, 20, 30, and 40), a top panel 60, and a bottom panel 50, each of which has a wall portion (wall portion 11) and a storage portion (storage portion 12) that stores a heat storage material (storage material P) therein, one of the wall portion and the storage portion has an insertion portion (insertion portion 11a), and the other has an insertion portion (insertion portion 12c) that is inserted into the insertion portion, and one of the inner wall surface of the insertion portion and the side surface of the insertion portion has a convex portion (convex portion 12d), and the other has a concave portion (convex portion 11b) that fits into the convex portion, and the method includes a molding process in which the wall portion and the storage portion are foam-molded separately.

[0101] A method for manufacturing a constant temperature transport container according to a twelfth aspect of the present invention is a method according to the eleventh aspect, which includes a heat storage material accommodating step of accommodating a heat storage material (storage material P) in the accommodating section (accommodating section 12).

[0102] A thirteenth aspect of the present invention relates to a method for producing a constant temperature transport container, wherein in the twelfth aspect, the heat storage material (storage material P) is of two or more types having different melting temperature ranges.

[0103] A method for manufacturing a constant temperature transportation container according to a fourteenth aspect of the present invention is a method according to any one of aspects eleven to thirteen, which includes an article containing step of containing a temperature-maintaining article T in the constant temperature transportation container.

[0104] A method for manufacturing a constant temperature transport container according to aspect 14 of the present invention is a method according to any of aspects 11 to 14, wherein the dimensions of the side wall panels (side wall panels 10, 20, 30, and 40) are a height of 300 mm to 2500 mm, a width of 500 mm to 3000 mm, and a thickness of 20 mm to 400 mm.

[0105] 10, 20, 30, 40 Side wall panel 11, 21, 31, 41 Wall portion 12, 22, 32, 42 Storage portion 11a Insertion portion 11b Recessed portion 12a Rail portion (rail) 12b Support portion 12c Insertion portion 12d Convex portion 13 Insertion portion 14 Insertion portion 15 Vertical member 15a Vertical rail portion 15b Support portion 15c Insertion portion 16 Horizontal member 16a Receiving portion 16b Support portion 16c Insertion portion 17 Storage portion 50 Bottom panel 60 Top panel 100 Constant temperature transport container P Storage material (heat storage material) T Temperature-maintaining item

Claims

1. A modular constant-temperature transport container capable of transporting temperature-maintaining articles at a constant temperature, comprising three or more side wall panels, a top panel, and a bottom panel, wherein each of the side wall panels includes a wall portion and a storage portion for storing a heat storage material therein, the wall portion and the storage portion are separate foam-molded bodies of expandable particles, one of the wall portion and the storage portion has an insertion port portion, and the other has an insertion portion to be inserted into the insertion port portion, a convex portion is provided on one of the inner wall surface of the insertion port portion and the side surface of the insertion portion, and a concave portion that fits into the convex portion is provided on the other, the constant-temperature transport container.

2. The wall portion has the insertion port portion, the storage portion has the insertion portion, the constant-temperature transport container according to Claim 1.

3. The convex portion is provided on the side surface of the insertion portion, the concave portion is provided on the inner wall surface of the insertion port portion, the constant-temperature transport container according to Claim 1 or 2.

4. The storage portion includes rails for guiding the heat storage material, the rails having support portions for supporting the heat storage material, the constant-temperature transport container according to Claim 1 or 2.

5. The storage portion includes a plurality of vertical members and one horizontal member, the vertical members and the horizontal member are in the shape of rectangular plates and protrude from the inner surface of the wall portion, the plurality of vertical members are arranged along the height direction such that their lower ends are at the same position in the height direction and are parallel to each other at equal intervals, and the horizontal member is in contact with the lower ends of the plurality of vertical members and extends laterally, the constant-temperature transport container according to Claim 1 or 2.

6. The dimensions of the side wall panel are such that the height is 300 mm to 2500 mm, the width is 500 mm to 3000 mm, and the thickness is 20 mm to 400 mm, the constant-temperature transport container according to Claim 1 or 2.

7. The constant-temperature transport container according to Claim 1 or 2, comprising a heat storage material stored in the storage portion.

8. The heat storage material is two or more kinds having different melting temperature ranges, the constant-temperature transport container according to Claim 7.

9. The number of the side wall panels is four, the constant-temperature transport container according to Claim 1 or 2.

10. The constant-temperature transport container according to Claim 1 or 2, in which a temperature-maintaining article is stored. **Claim 11**: The storage part is provided with an insertion port for inserting a heat storage material from the side of the side wall panel, and the insertion port is provided on one side surface side of the side wall panel. The isothermal transport container according to claim 1 or 2. **Claim 12** An assembled isothermal transport container capable of isothermally transporting temperature-maintaining articles, comprising three or more side wall panels, a top panel, and a bottom panel, each of the side wall panels comprising a wall part and a storage part for storing a heat storage material therein, one of the wall part and the storage part having an insertion port part, and the other having an insertion part to be inserted into the insertion port part, a convex part is provided on one of the inner wall surface of the insertion port part and the side surface of the insertion part, and a concave part fitting into the convex part is provided on the other, A method for manufacturing an isothermal transport container, including a molding step of separately molding the wall part and the storage part using expandable particles. **Claim 13** The method for manufacturing an isothermal transport container according to claim 12, including a heat storage material storage step of storing a heat storage material in the storage part. **Claim 14** The method for manufacturing an isothermal transport container according to claim 13, wherein the heat storage material is two or more kinds having different melting temperature ranges. **Claim 15** The method for manufacturing an isothermal transport container according to any one of claims 12 to 14, including an article storage step of storing a temperature-maintaining article in the isothermal transport container. **Claim 16** The dimensions of the side wall panel are such that the height is 300 mm to 2500 mm, the width is 500 mm to 3000 mm, and the thickness is 20 mm to 400 mm. The method for manufacturing an isothermal transport container according to any one of claims 12 to 14. **Claim 17**: The storage part is provided with an insertion port for inserting a heat storage material from the side of the side wall panel, and the insertion port is provided on one side surface side of the side wall panel. The method for manufacturing an isothermal transport container according to any one of claims 12 to 14.