TW201720720A - Cold box - Google Patents

Abstract

The cold box 1 comprises an outer case 10 with an openable/closeable top face, an inner case 20 received in the outer case 10 and an inner box 30 received in the inner case 20. The inner case 20 includes plural lateral faces and bottom face, respectively, formed by insulation boards 21a~21d and 22 dependent from one another. At the boundaries of the plural lateral faces and the bottom face, the end face of one of the two adjacent insulation boards is in contact with another one so as to form a case body. The inner box 30 is formed with non-breathable material, and has a shape following the plural lateral faces and bottom face of the inner case 20, with the non-breathable material being folded at the sides opposing those boundaries.

Description

Cold box

The present invention relates to a cold-insulation box for accommodating and keeping an article, and particularly relates to a technique for ensuring internal airtightness although it is a structure that is inexpensive.

In recent years, in the logistics system, both land transportation and air transportation provide services for conveying goods at low temperatures. In the case of conveying the article at a low temperature, for example, the article and the cold-preserving material may be housed together in a heat-insulating cold-insulation box, and the article may be kept cold while being cooled by the cold air of the cold-preserving material. Moreover, in the case where the article is stored at a low temperature in a warehouse, the article and the cold-preserving material can be housed together in a heat-insulating cold storage box, and the article can be kept cold while being cooled by the cold air of the cold-preserving material. In the case of such a cold storage box, a foamed styrene formed into a box type is generally used (for example, refer to Patent Document 1).

However, in order to achieve the reduction of the manufacturing cost of the above-mentioned cold box, in one method, we consider not using the molded foamed styrene, but using a plurality of heat insulating sheets having a certain thickness, and thus the heat insulating sheet constitutes cold insulation. The bottom of the box and a plurality of sides. In this case, since only the heat insulating plates are combined vertically and horizontally to form a cold-insulation box, it is not necessary to form the foamed styrene into a box shape, thereby reducing the manufacturing cost. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2000-346514

[Problems to be Solved by the Invention] In the case where a plurality of heat insulating plates are combined to form a cold-insulation box, as described above, the bottom surface and the plurality of side surfaces of the cold-insulation box are each formed of a heat insulating plate, and at the boundary between the bottom surface and the plurality of side surfaces, The end faces of at least one of the two heat insulating plates abut against the other heat insulating plate to form a box.

However, since the heat insulating plate has a certain thickness in order to ensure heat insulation, if only the end faces of at least one of the two heat insulating plates abut against the other heat insulating plate, there is a gap between the abutting portions of the two heat insulating plates. The possibility. Therefore, there is a problem in that the cold air inside the cold-insulation box is dissipated to the outside from the gap generated by the abutting portions of the two heat insulating plates, and the airtightness cannot be ensured, and the cooling effect is lowered.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cold-insulation box capable of ensuring internal airtightness even if a plurality of heat insulating panels are used to form a bottom surface or a side surface. [The way to solve the problem]

The present invention for achieving the above object is a cold storage box comprising: an outer casing configured to be freely openable and closable; a inner casing housed in the outer casing; and an inner casing housed in the inner casing And the inner box has a bottom surface and a plurality of side surfaces respectively formed by the independent heat insulating plates, and the end faces of the at least one of the two heat insulating plates are abutted at the boundary between the bottom surface and the plurality of side surfaces Another heat insulating plate is formed as a casing, and the inner casing is formed of a non-breathable member and has a shape along a bottom surface and a plurality of side surfaces of the inner casing, and the side portions facing the boundary are joined or bent. The non-breathable member is configured.

In the invention constructed as described above, the bottom surface and the plurality of side surfaces of the inner casing housed in the outer casing are each formed of independent heat insulating plates, but in the two insulating plates at the respective boundaries of the bottom surface and the plurality of side surfaces The end surface of at least one of the heat insulating plates abuts against the other heat insulating plate to form a casing. Therefore, in particular, in the case where the heat insulating plate has a sufficient thickness to ensure the heat insulating property, there is a possibility that a gap is formed in the abutting portion of the two heat insulating plates. In the present invention, the inner box houses: an inner box having a shape along a bottom surface and a plurality of side surfaces of the inner box, and is formed of a non-breathable member; and the bottom surface of the inner box and the inner box and The side portions of the plurality of side faces that face each other are formed by joining or bending a non-breathable member. Therefore, in the case where the cold-preserving material or the cold-preserving material is housed in the inner case, the internal cold air is blocked by the inner casing, and does not flow out to the outside from the gap of the plurality of heat insulating plates constituting the inner casing, and even if the outside air is from the outside The gap of the insulation panel enters and is also blocked by the inner casing, thereby ensuring the internal airtightness.

As described above, the inner casing for ensuring the heat insulation has the following simple structure, and the inner airtightness is also ensured by the inner casing of the inner casing: the bottom surface and the plurality of side surfaces are each formed of a heat insulating plate. And at the boundary between the bottom surface and the plurality of side surfaces, the end faces of at least one of the two heat insulating plates are abutted against the other heat insulating plate to form a casing.

Further, it is a cold storage box, which has: an outer casing, which is configured to be freely openable and closable; a inner casing is housed in the outer casing; and an inner casing is housed in the inner casing; and the inner casing is The bottom surface and the plurality of side surfaces are respectively formed by independent heat insulating plates, and the end faces of at least one of the two heat insulating plates are abutted against the other heat insulating plate at the boundary between the bottom surface and the plurality of side surfaces. The inner casing is formed of a non-breathable member, and the non-permeable member is formed to have a shape along a bottom surface and a plurality of side surfaces of the inner casing.

In the present invention as described above, the inner casing houses an inner casing formed of a non-breathable member, and the inner casing is formed by molding the non-breathable member along the bottom surface and the plurality of side faces of the inner casing. Formed by shape. Therefore, in the case where the cold-preserving material or the cold-preserving material is housed in the inner casing, the internal cold air is blocked by the inner casing, and does not flow out from the gap of the plurality of heat insulating plates constituting the inner casing to the outside, and even the external air It enters from the gap of the heat insulating plate and is also blocked by the inner casing, thereby ensuring the internal airtightness.

As described above, the inner casing for ensuring the heat insulation has the following simple constitution, and also ensures the internal airtightness by accommodating the inner casing of the inner casing: the bottom surface and the plurality of side surfaces are each formed of a heat insulating plate. And at the boundary between the bottom surface and the plurality of side surfaces, the end faces of at least one of the two heat insulating plates are abutted against the other heat insulating plate to form a casing.

Further, such a heat insulating plate may be formed of a urethane plate having a thickness of 20 mm or more, and the non-permeable member constituting the inner case may be a synthetic resin sheet having a thickness of 10 mm or less.

Further, in the above configuration, the inner casing may have a configuration in which the non-breathable member is bent at the side portion, and at least one of a bottom surface and a plurality of side surfaces of the inner casing are opposed to each other. The region has an overlapping portion which is formed by overlapping the aforementioned non-permeable members. [Effects of the Invention]

According to the present invention, the inner casing for ensuring the heat insulation can adopt the following simple constitution, and can also ensure the internal airtightness by accommodating the inner casing of the inner casing: the bottom surface and the plurality of side surfaces are respectively insulated. In the plate configuration, at the boundary between the bottom surface and the plurality of side surfaces, the end faces of at least one of the two heat insulating plates are brought into contact with the other heat insulating plate to form a casing.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Fig. 1a is an external perspective view showing a state in which a lid portion of an embodiment of the cold box of the present invention is opened, and Fig. 1b is a cross-sectional view taken along line A-A' of Fig. 1a. In addition, FIG. 1b also shows a cross section of the cover portion 12. Fig. 2 is a view for explaining a storage form of the outer casing 10, the inner casing 20, and the inner casing 30 in the cold-insulation box 1 shown in Figs. 1a and 1b. Fig. 3a is a developed view showing the configuration of the inner case 30 shown in Fig. 1a, Fig. 1b, and Fig. 2, and Fig. 3b and Fig. 3c are perspective views showing the state in which the inner case 30 is being assembled.

As shown in FIG. 1a, FIG. 1b, and FIG. 2, the present embodiment is a cold-insulation box 1 in which an inner box 20 and an inner box 30 are housed in an outer casing 10.

The outer casing 10 is formed, for example, of a plastic corrugated board, and is composed of a box portion 11 whose top surface is open, and a lid portion 12 that opens and closes the top surface of the box portion 11. In the lid portion 12, a heat insulating plate 16 formed of a urethane plate having a certain thickness is embedded in the inner surface thereof. Further, an aluminum sheet 13 is attached to the front and back surfaces of the urethane sheet. Further, a cover liner 14 made of expanded polyethylene is attached to the aluminum sheet 13 on the tank portion 11 side of the heat insulating plate 16 along the peripheral edge portion thereof. The box portion 11 is configured by erecting four side faces 11a to 11d on the bottom surface 15.

The inner casing 20 is formed of four side faces by four independent heat insulating plates 21a to 21d, and is integrally formed by the heat insulating plates 22 independent of the heat insulating plates 21a to 21d, and is housed in the outer casing 10. These heat insulating sheets 21a to 21d and 22 are formed, for example, of a urethane sheet having a thickness of 30 mm, and an aluminum sheet (not shown) is attached to the front and back surfaces thereof. The heat insulating plates 21a to 21d constituting the side surfaces of the inner casing 20 are respectively erected in the region along the end side of one surface of the heat insulating plate 22 constituting the bottom surface. Thereby, the end faces of the heat insulating plates 21a to 21d abut against the heat insulating plate 22. Further, the heat insulating plates 21b and 21d facing each other of the heat insulating plates 21a to 21d constituting the side surface of the inner casing 20 are in contact with the end faces adjacent to the end faces of the heat insulating plates 22, and abut against the heat insulating plates 21a, respectively. The area of the end side of the inner side of 21c. As described above, one of the end faces of the heat insulating plates 21a to 21d constituting the side faces of the inner casing 20 abuts against the region along the end side of one surface of the heat insulating plate 22, and constitutes the heat insulating of the side surface of the inner casing 20. The end faces of the heat insulating plates 21b and 21d facing each other in the plates 21a to 21d abut against the end portions of the faces along the inner side of the heat insulating plates 21a and 21c, respectively. Thereby, at the boundary between the bottom surface and the four side surfaces of the inner casing 20, one end surface of the two heat insulating plates abuts against a region along the end side of the other heat insulating plate, thereby forming a casing having the accommodating portion 2. In this case, the three end faces of the heat insulating plates 21a and 21c, one end surface of each of the heat insulating plates 21b and 21d, and all the end faces of the heat insulating plate 22 are exposed, but the heat insulating plates 21a to 21d and 22 are easy to enter from the end faces. In this case, it is preferable to cover the exposed end face with a water-resistant tape. Further, the thickness of the heat insulating plates 21a to 21d, 22 is not limited to 30 mm, but is preferably 20 mm or more.

As shown in FIG. 2 and FIG. 3a to FIG. 3c, the inner case 30 is composed of, for example, a synthetic resin sheet having a thickness of 0.5 mm, that is, a bottom surface 32 and four side surfaces 31a to 31d, and these are assembled into a case. In a state in which the bottom surface 32 and the four side surfaces 31a to 31d are assembled, the bottom surface 32 and the four side surfaces 31a to 31d have a shape along the bottom surface and the side surface of the inner casing 20, and are fitted into the inner casing 20 to be accommodated. Each of the side faces 31a to 31d is connected to the bottom face 32 at one side, and the side opposite to the side of the bottom face 32 is connected to the edge 33a to 33d having the heat insulating plates 21a to 21d constituting the side surface of the inner casing 20. The same thickness as the width. Further, the side faces 31b and 31d facing each other among the four side faces 31a to 31d are connected to the two sides adjacent to the side of the bottom face 32 by the overlapping portions 34a to 34d having a constant width. Further, the thickness of the inner case 30 is not limited to 0.5 mm, but is preferably 10 mm or less.

As shown in FIG. 3b, the inner casing 30 is formed by bending a synthetic resin sheet at the boundary between the bottom surface 32 and the side surfaces 31a to 31d, and bending the synthetic resin sheet at the boundary between the side surfaces 31b and 31d and the overlapping portion portions 34a and 34d. The overlapping portion 34a, 34d is used to cover a portion of the outer side of the side surface 31a, and the synthetic resin sheet is bent at the boundary between the side surfaces 31b, 31d and the overlapping portion portions 34b, 34c for covering the overlapping portion portions 34b, 34c. A portion of the outer side of the side surface 31c. Further, the synthetic resin sheet is bent so that the edge portions 33a to 33d are reversed outward at the boundary between the side faces 31a to 31d and the edge portions 33a to 33d. Thereafter, as shown in FIG. 3c, the tapes 36 are attached so as to cover the sides of the overlapping portions 34a to 34d opposite to the side faces 31b and 31d, and the overlapping portions 34a to 34d are attached. On the side faces 31a, 31c. The inner case 30 is assembled in this manner and housed in the inner box 20, so that the boundary between the heat insulating plates 21a to 21d constituting the side surface of the inner box 20 faces the side of the boundary between the four side faces 31a to 31d of the inner case 30. 35a~35d. At this time, the side portions 35a to 35d are formed by bending a synthetic resin sheet while connecting the side surfaces 31b and 31d and the overlapping portion portions 34a to 34d. Further, the boundary between the heat insulating plate 22 constituting the bottom surface of the inner casing 20 and the heat insulating plates 21a to 21d constituting the side surface also faces the side of the boundary between the bottom surface 32 of the inner casing 30 and the side surfaces 31a to 31d. At this time, the side portion is formed by bending a synthetic resin sheet on the side where the side faces 31a to 31d are joined to the bottom face 32.

Fig. 4 is an external perspective view showing a state in which the inner casing assembled as shown in Figs. 3a to 3c is housed in the inner casing.

After the inner casing 30 assembled as described above is housed in the inner casing 20, as shown in FIG. 4, the tapes 37a to 37d are attached so as to cover the edge portions 33a to 33d which are overlapped on the end faces of the heat insulating plates 21a to 21d. Thereby fixed in the inner box 20. Further, although the inner casing 30 can be fixed to the inner casing 20 by attaching the tapes 37a to 37d only to the four corner portions on the edge portions 33a to 33d, the entire inner casing 30 can be covered as shown in FIG. When the tapes 37a to 37d are attached to the edges 33a to 33d, the tapes 37a to 37d are not easily peeled off. Thereby, the inner box 30 can be more firmly fixed to the inner box 20. At this time, in a region facing one of the heat insulating plates 21a of the heat insulating plates 21a to 21d constituting the side surface of the inner casing 20, there is an overlapping portion, which is formed by the side surface 31a of the inner casing 30 and the overlapping portion portions 34a, 34d. The synthetic resin sheets are overlapped. Further, in a region facing a portion of the heat insulating plate 21c, there is an overlapping portion which is formed by overlapping the side surface 31c of the inner casing 30 with the synthetic resin sheets of the overlapping portion portions 34b and 34c.

The method of using the cold-insulation box 1 as described above and its function will be described below.

Fig. 5 is a view showing a state in which the cold-insulation material is stored in the cold-insulation box 1 shown in Figs. 1 to 4 from the top surface. In addition, in FIG. 5, in order to show the effect of the cold insulation box 1 easily, the illustration of the edge parts 33a-33d is abbreviate|omitted.

When the cold storage box 1 shown in FIGS. 1 to 4 is used to keep the article 4 which is the cold storage material cold, as shown in FIG. 5, the article 4 is stored in the storage portion 2 of the cold storage box 1 and is surrounded by In the form of the article 4, the cold-preserving material 3 is housed in the accommodating portion 2. The lid portion 12 is then closed to keep the article 4 cold.

When the lid portion 12 is closed, the lid liner 14 attached to the inner side of the lid portion 12 abuts against the edge portions 33a to 33d of the inner box 30. Thereby, the airtightness between the lid portion 12 and the inner box 30 can be ensured, and the cold retention effect can be obtained. Moreover, the heat insulating property is also ensured by the heat insulating plate 16 attached to the lid portion 12, and the cooling effect is obtained.

Further, on the side of the box portion 11, the inner side and the bottom surface of the inner casing 20 housed in the outer casing 10 are each formed of independent heat insulating plates 21a to 21d and 22, whereby the heat insulating property can be ensured, and the cooling effect can be obtained. However, because the end faces of the four heat insulating plates of the two heat insulating plates are abutted against the other heat insulating plate as the casing, as described above, there are two heat insulating materials. The abutment portion of the plate creates the possibility of a gap. In particular, when the heat insulating plates 21a to 21d have a sufficient thickness as in the present embodiment in order to ensure heat insulation, there is a possibility that a gap is generated. In this case, in the case where the outer casing 10 is as good as the airtightness of the plastic corrugated board, there is a concern that the outside air may enter the cold-insulation box 1 from the gap, and sometimes the inside of the cold-keeping tank 1 The cold air flows out from the gap to the outside, and the cooling effect is lowered.

Then, in the cold storage box 1 of the present embodiment, the inner casing 20 houses the inner casing 30 formed of a synthetic resin sheet which is a non-permeable member, and in the inner casing 30, as described above, there is an inner casing. The side portion facing the boundary of the heat insulating plate, which is likely to have a gap, is formed by bending a synthetic resin sheet. Therefore, as shown in Fig. 5, the cold air of the accommodating portion 2 is blocked by the inner casing 30, and even if the outside air enters from the gap between the heat insulating plates 21a to 21d, 22 of the inner casing 20, the external air that has entered is also subjected to the inner casing. 30 is blocked to ensure the airtightness of the accommodating portion 2.

As described above, in the present embodiment, the inner casing 20 for ensuring the heat insulating property can be secured by the following simple configuration, and the inner casing 30 can be housed in the inner casing 20 to ensure internal airtightness: Each of the side surface and the bottom surface is formed of the heat insulating plates 21a to 21d and 22, and the end faces of one of the two heat insulating plates are abutted against the other heat insulating plate at the boundary between the plurality of side surfaces and the bottom surface to form a casing. As a result, in the case where the storage unit 2 of the cold-insulation box 1 is housed together with the article 4 and the cold-preserving material 3, the cold-preserving material 3 can sufficiently obtain the cold-keeping effect of the cold-preserving material 3, and the article 4 can be surely kept cold.

Further, in the present embodiment, the synthetic resin sheet is bent at the boundary between the bottom surface 32 and the side surfaces 31a to 31d, and the synthetic resin sheet is bent at the boundary between the side surfaces 31b and 31d and the overlapping portion portions 34a and 34d for the overlap region. The portions 34a and 34d cover a part of the outer side of the side surface 31a, and the synthetic resin sheet is bent at the boundary between the side surfaces 31b and 31d and the overlapping portion portions 34b and 34c for covering the outer side of the side surface 31c with the overlapping portion portions 34b and 34c. A part of the tapes 36 are attached so as to cover the sides of the overlapping sections 34a to 34d opposite to the side of the side faces 31b and 31d, and the overlapping sections 34a to 34d are attached to the side faces 31a and 31c. Thereby, the four side portions 35a to 35d of the inner casing 30 are formed by bending a synthetic resin sheet while joining the side surfaces 31b and 31d and the overlapping portion portions 34a to 34d. However, even if the four side faces 21a to 21d are joined by the side portions 35a to 35d by welding or the like, the same effect can be obtained. Further, the side portion formed by the boundary between the bottom surface 32 of the inner casing 30 and the side surfaces 31a to 31d may be similarly formed by joining the bottom surface 32 and the side surfaces 31a to 31d by a method such as welding.

Further, the inner casing 30 is formed by molding a non-permeable member such as a synthetic resin sheet into the shape of the side faces 21a to 21d and the bottom surface 22 of the inner casing 20, and the same effects as described above can be exhibited.

Moreover, the article 4 accommodated in the accommodating unit 2 can be considered as a variety of articles, and may be a food or the like, or may be a sample such as blood. In this case, the specimen may be held in the container according to the shape of the accommodating portion 2, and may be housed in the accommodating portion 2. However, the container itself may be formed of a material having heat insulating properties such as foamed polyethylene.

[Other Embodiments] Fig. 6 shows another embodiment of the inner box used in the cold box of the present invention, and is a view from the top surface.

In the inner casing 20 shown in the above embodiment, the end faces of the heat insulating plates 21b and 21d facing each other among the heat insulating plates 21a to 21d constituting the side surface of the inner casing 20 are in contact with the inner faces of the heat insulating plates 21a and 21c, respectively. In the region of the end edge, one end surface of the two heat insulating plates abuts the region along the end edge of the other heat insulating plate to form the accommodating portion 2 by the boundary between the bottom surface and the four side surfaces of the inner casing 20 The box. However, as shown in FIG. 6, the end faces of the heat insulating plates 121a to 121d constituting the side faces may be formed obliquely, and the end faces thereof may abut against the end faces of the intersecting heat insulating plates 121a to 121d, respectively. It is configured such that each of the four side faces of the inner casing abuts against the other end surface of the two heat insulating plates to form a casing having the accommodating portion. Further, the end surface of the heat insulating plate 122 constituting the bottom surface of the inner casing may be formed obliquely and abutting against the end faces of the heat insulating plates 121a to 121d constituting the side surfaces.

In this case, the end faces of the heat insulating plates 121a to 121d and 122 constituting the plurality of side faces and the bottom faces of the inner casing are not exposed. Thereby, even if the heat insulating plates 121a to 121d and 122 are formed of a material which is easily entered from the end surface by moisture, moisture can be prevented from entering.

1‧‧‧ cold box
2‧‧‧ 收纳 department
3‧‧‧ cold insulation material
4‧‧‧ Items
10‧‧‧Outer box
11‧‧‧Box Department
11a~11d‧‧‧ side
12‧‧‧ 盖部
13‧‧‧Aluminum sheet
14‧‧‧Cushion
15‧‧‧ bottom
16‧‧‧Insulation board
20‧‧‧ inside box
21a~21d‧‧‧Insulation board
22‧‧‧Insulation board
30‧‧‧ inner box
31a~31d‧‧‧ side
32‧‧‧ bottom
33a~33d‧‧‧Edge
34a~34d‧‧‧ overlapping area
35a~35d‧‧‧Edge
36‧‧‧Strip
37a~37d‧‧‧ tape
121a~121d‧‧‧Insulation board
122‧‧‧Insulation board

Fig. 1a is an external perspective view showing a state in which a lid portion of an embodiment of the cold box of the present invention is opened. Fig. 1b is a cross-sectional view taken along line A-A' of Fig. 1a. Fig. 2 is a view showing a storage form of the outer casing, the inner casing, and the inner casing in the cold-insulation box shown in Figs. 1a and 1b. Fig. 3a is a developed view showing the configuration of the inner box shown in Fig. 1a, Fig. 1b, and Fig. 2 before assembly. Fig. 3b is an external perspective view showing a state in which the inner casing shown in Figs. 1a, 1b, and 2 is being assembled. Fig. 3c is an external perspective view showing a state in which the inner casing shown in Figs. 1a, 1b, and 2 is being assembled. Fig. 4 is an external perspective view showing a state in which the inner casing assembled as shown in Figs. 3a to 3c is housed in the inner casing. Fig. 5 is a view showing a state in which the cold-insulation material is stored in the cold-insulation box shown in Figs. 1 to 4 from the top surface. Fig. 6 shows another embodiment of the inner box used in the cold box of the present invention.

1‧‧‧ cold box

2‧‧‧ 收纳 department

10‧‧‧Outer box

11‧‧‧Box Department

12‧‧‧ 盖部

13‧‧‧Aluminum sheet

14‧‧‧Cushion

16‧‧‧Insulation board

20‧‧‧ inside box

21b, 21d‧‧‧ insulation board

22‧‧‧Insulation board

30‧‧‧ inner box

Claims (3)

A cold storage box has: an outer box, which is configured to be freely openable and closable; the inner box is received in the outer box; and the inner box is received in the inner box; and the inner box is borrowed The bottom surface and the plurality of side surfaces are respectively formed by independent heat insulating plates, and at the boundary between the bottom surface and the plurality of side surfaces, the end faces of at least one of the two heat insulating plates are abutted against the other heat insulating plate to form a box. The inner casing is formed of a non-breathable member and has a shape along a bottom surface and a plurality of side surfaces of the inner casing, and a side portion facing the boundary is formed by joining or bending the non-breathable member. The invention relates to a cold storage box, comprising: an outer box, wherein the top surface can be freely opened and closed; the inner box is received in the outer box; and the inner box is received in the inner box; and the inner box is bottomed And a plurality of side surfaces are respectively formed by independent heat insulating plates, and at the boundary between the bottom surface and the plurality of side surfaces, the end faces of at least one of the two heat insulating plates are abutted against the other heat insulating plate to form a casing. The inner box is formed of a non-breathable member, and the non-breathable member is formed to have a shape along a bottom surface and a plurality of side surfaces of the inner box. The cold-insulation box according to claim 1 or 2, wherein the heat insulating plate is formed of a urethane plate having a thickness of 20 mm or more, and the non-breathable member constituting the inner case is a synthetic resin sheet having a thickness of 10 mm or less. .