JP3333900B2 - Insulated container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cold storage used as a fish box for storing or transporting marine products such as seafood such as salted mackerel, herring, shark, squid, etc. in a state of being cooled with ice. It is related to containers, and is used, for example, when fresh products such as marine products transported from a fishing ground and landed at a fishing port are accommodated in the insulated containers and transported to various parts of Japan in a frozen state or an insulated state. .

[0002]

2. Description of the Related Art Generally, fresh products such as marine products as described above are stored in a wooden box or a foamed synthetic resin container together with a cooling material such as ice and stored or transported in a frozen or cooled state. is there. In the case of these containers, especially containers made of foamed synthetic resin, fresh products such as marine products stored in the containers come into contact with sewage such as drip generated from marine products such as fish and ice-melted water as a cold insulator. It is known to provide a drain hole for discharging contaminated water such as drip generated from fish or the like and ice melted inside the container at the bottom of the container to prevent the quality from being reduced or It is heavily used. However, for example, when the containers are stacked and stored or transported by truck or the like, the wastewater discharged from the drain hole flows down from the upper surface of the lid of the lower container to the side surface of the container, and the side surface of the stacked containers becomes wet. In other words, the worker's hand holding the container slips and the workability during transportation deteriorates,
There is also a problem that the side of the container is stained by the sewage, and furthermore, the label attached to the side of the container is broken or peeled off, thereby damaging the appearance of the container.

As described above, Japanese Utility Model Registration No. 3043521 discloses a structure for preventing the side surface of a cold storage container from being contaminated by sewage or the like discharged from a drain hole. Forming a through hole downward, forming a through hole in the lid at a position matching the through hole, and forming a drainage passage communicating with the through hole of the container body at the bottom inside the container body; It has been disclosed. According to this cold storage container, sewage and the like in the container flow from the drainage channel at the bottom of the container body into the through hole in the side wall of the container body that communicates with the bottom portion of the inside of the container body. Through the through hole in the side wall of the container body of the container body from the bottom of the lowermost container body,
It does not stain the sides of the container.

[0004] However, when storing or transporting fresh products such as fish and shellfish, it is common to store and transport a plurality of cold storage containers made of foamed synthetic resin or the like which contain these contents. . In the case of stacking the containers, for example, as shown in FIG. 20, not only are all containers c aligned in the same direction, but also, for example, as shown in FIG. Stacking is often done. In the industry, the case where the direction of the containers c is aligned and stacked as shown in FIG. 20 is referred to as “stick stacking”. On the other hand, the method of stacking with the directions of the containers c and c ′ changed as shown in FIG. , "Back stacking" (hereinafter also referred to as "stick stacking" and "back stacking" in this specification). In particular, when a large number of containers are stacked on a pallet at the time of transportation and loaded, unloaded, or moved on a truck or the like, the above-described back stacking is performed. For example, when transporting fish boxes at a market or the like, the cold storage containers in which fish and the like are stored and stacked together with ice are extremely heavy, and therefore, as described above, they are often loaded on a pallet and transported by a forklift. When stacked on a pallet in the same direction, the stacked containers are unstable and easily fall down due to vibration or the like during transportation. Therefore, it is general to stack the containers in different directions. Therefore, when the drip or ice melt water in the container is discharged to the outside of the container, even when the container is stacked in a different direction as described above, the drip or ice melt water discharged from the container is used. It is desired to prevent the outer surface of the container from being contaminated by the above method. However,
In a conventional cold storage container provided with a through hole for drainage, as described above, a drainage channel for discharging contaminated water such as drip and ice melt water in the container to the outside of the container is provided at the bottom inside the container body. In the configuration, the side wall of the container body is communicated with a through hole formed by penetrating vertically, and the wastewater in the stacked upper container is caused to flow from the through hole of the container body to the through hole on the upper surface of the lower lid. Therefore, when the container is stacked in the wrong direction, the position of the through hole of the upper container body and the position of the through hole of the lower lid upper surface do not match. There is a possibility that sewage or the like discharged from the through hole does not necessarily flow into the through hole on the upper surface of the lower lid, but flows down to the side surface of the container, thereby contaminating the outer surface of the container.
As described above, in the case of the above-described conventional cold storage container provided with a through-hole for drainage, the problem of contamination of the outer surface of the container when the container is stacked in the wrong direction is not necessarily solved. At present it is restricted.

Further, as described above, when the drainage channel at the bottom of the container body for discharging the sewage in the container is provided in communication with the through hole formed in the side wall of the container body at the bottom inside the container body, It is necessary to provide the drainage channel at the corner between the side wall and the bottom of the container body. However, since a large load is applied to the side wall of the cold storage container due to the storage material such as fish and ice or the like stored in the container, when the through hole is provided in the side wall as described above, the side wall of the side wall has a small size. In addition to the fact that the strength tends to decrease, if the drainage channel is further connected to the through hole provided in the side wall at the bottom inside the container body, the strength of the corner between the side wall and the bottom of the container body in the communication part decreases. Tends to be. In particular, such a cold storage container made of foamed synthetic resin is often stored or transported in a multi-tiered manner after storing perishables or the like as described above. Since the upper container receives an extremely large load for all the containers located above it, the reduction in the strength of the container becomes a serious problem. Also,
This type of foamed synthetic resin container is generally molded by an in-mold molding method of foamable synthetic resin beads.
When the drainage channel at the bottom of the container body is provided so as to communicate with the through hole provided on the side wall at the bottom inside the container body as described above, the mold structure tends to be complicated, and separation during molding tends to occur. The moldability also tends to decrease. Further, in the case where a drainage channel for discharging sewage or the like in the container to the outside of the container is communicated with a through hole in the side wall of the main body at the bottom inside the container main body, when the containers are stacked in multiple stages, the container is positioned lower. In such a case, the amount of sewage and the like flowing down through the through-hole increases, and when sewage flows down the inside of the through-hole at one time, the sewage or the like flows into the container from the drainage hole communicating therewith. There is also a possibility of backflow.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems in the conventional cold storage container, and the drip generated from marine products and the like contained in the container and the ice inside the container as a cooling material have been melted. In cold storage containers equipped with drain holes for discharging sewage such as water, not only when stacking containers in the same direction but also when storing or transporting them in different orientations In addition, sewage discharged from inside the container, such as drip or ice melted water generated from fresh products such as marine products, may wet the side of the container and deteriorate the workability during transportation or damage the appearance of the container. It is an object of the present invention to provide a cold storage container which does not lower the strength of the container and which can be easily formed.

[0007]

According to the present invention, there is provided a cold storage container comprising a container body made of a foamed synthetic resin and a lid, wherein a peripheral edge of an upper surface of the lid is provided. An annular convex portion is provided around the lower portion of the container body, and a leg portion is provided on the lower surface of the container main body so as to fit inside the annular convex portion on the upper surface of the lid when the containers are stacked. A water passage hole is provided inside the portion, which vertically penetrates the lid and the side wall of the container body in the closed state, and is opened on the upper surface of the lid and the lower surface of the container body. A hole is provided, and a water passage space is formed that guides water discharged from the drain hole on the lower surface of the upper container body to the water hole opened on the upper surface of the lid when the containers are stacked. It is characterized by having made it so.

[0008] According to the above-described cold storage container of the present invention, when marine products such as fish and shellfish are stored or transported in the container together with a cold insulating material such as ice, drip generated from the marine products or the like can be prevented. Since sewage such as water in which ice in the container has been melted is discharged out of the container through a drain hole provided at the bottom of the container body, it is necessary to prevent fish and the like in the container from contacting the sewage and the like. Can be. When the containers are stacked, the wastewater discharged from the drain hole at the bottom of the upper container body flows down to the upper surface of the lower lid, flows into the water hole opened on the upper surface of the lid, and flows through the water. The water flows down the container through the water hole, and flows from the lower surface of the container body into the water hole that is further opened on the upper surface of the lower lid. This is repeated in order, and the sewage discharged from each stacked container flows out from the lowermost container body lower surface to the floor surface through the gap formed between the floor surface by the legs provided on the container body lower surface. I do. In addition, sewage or the like in the lowermost container flows directly from the drain hole at the bottom of the container body to the floor surface through a gap formed between the floor surface and legs provided on the lower surface of the container body.

As described above, the sewage discharged from the drain hole at the bottom of the container flows downward sequentially through the stacked containers through the water holes provided vertically through the container, so that the side surface of the container becomes dirty. And the workability during transportation is not deteriorated and the appearance of the container is not impaired. In addition, an annular convex portion is provided around the periphery of the upper surface of the lid, and sewage and the like discharged from the drain hole on the lower surface of the upper container body are discharged to the upper surface of the lid inside the annular convex portion. Since it is made to flow into the water passage hole opened on the upper surface of the body, for example, not only in the case of bar stacking in which the direction of the container is aligned as shown in FIG. 20, but also in the direction of the container as shown in FIG. Even in the case of back stacking, the wastewater flowing out from the drain hole and water passage hole on the lower surface of the upper container body to the upper surface of the lower lid body surely flows out from the upper surface of the lid body to the container side surface and the like. By preventing the wastewater from flowing into the through-hole opened on the upper surface of the lid, the contaminated water can flow down the through-hole in the container without contaminating the outer surface of the container.

Further, generally, the side wall of the container body is formed to be thick at the corner of the container.
Since the water holes are provided at the corners of the container, there is no danger that the strength of the container will be reduced by the water holes provided through the side wall of the container body, and the drain holes at the bottom of the container body will not pass through the water holes. The drain holes are provided independently of the water holes to discharge sewage and the like discharged from the drain holes of the upper container body to the upper surface of the lower lid. There is no danger of lowering the strength of the container unlike the case where the container is provided at the corner between the side wall and the bottom of the container main body so as to communicate with the bottom inside the container main body. In addition, a water passage hole provided vertically penetrating the container at the corner of the container,
It is more preferable to provide at four corners of the container from the viewpoint of drainage efficiency.

In the above case, if the water holes are provided so as to penetrate the container almost vertically so that the positions of the openings of the water holes in the upper and lower containers coincide when the containers are stacked. The water flowing down through the water hole of the container and flowing out from the water hole opening provided on the lower surface of the container body of the container directly flows into the water hole opening provided on the upper surface of the container lid of the lower container. The upper surface of the lower container is not stained. Also, at this time, by opening the opening on the upper surface of the lid in the water passage hole larger than the opening on the lower surface of the container main body, the water flowing out from the water passage hole of the upper container can be more reliably discharged to the lower container. Into the water holes.

Further, water is introduced from a drain hole provided at the bottom of the upper container body and opened at the lower surface of the container body to the water discharged to the upper surface of the lower lid to the opening of the water hole opened at the upper surface of the lid. If a gap is formed between the lower surface of the upper container body and the upper surface of the lower lid as a space, the sewage discharged from the drain hole of the upper container main body passes through the gap to the lower lid upper surface. It can flow into the water passage hole, and can prevent water from flowing out to the side of the container or the like.

If the upper surface of the lid is formed so as to be inclined so as to become lower from the central portion toward the peripheral portion, sewage and the like discharged from the drain hole of the upper container body to the upper surface of the lower lid can be prevented. By quickly flowing into the water passage hole at the corner of the upper surface of the lid along the inclined surface, it is possible to more reliably prevent water from flowing out to the side surface of the container or the like. Even when the position of the water hole on the lower surface of the upper container body does not match the position of the water hole on the upper surface of the lower lid, as in the case, etc., the lower lid body is connected to the water hole on the lower surface of the upper container body. Sewage or the like that has flowed down to the upper surface can quickly flow into the water passage hole at the upper corner of the lid along the inclined surface.

Further, a water passage space is provided at the bottom of the upper container body and guides water discharged from the drain hole opened on the lower surface of the container body to the upper surface of the lower lid to the water hole opened on the upper surface of the lid. If a groove is provided on the upper surface of the lid, the sewage discharged from the drain hole of the upper container body to the upper surface of the lower lid reliably flows into the water hole on the upper surface of the lid through the groove.
It is possible to more reliably prevent the sewage from flowing out to the lower side of the container. In this case, by providing the bottom surface of the groove serving as the water passage space in a state inclined toward the opening of the water passage hole opening on the upper surface of the lid, it is possible to surely and quickly flow sewage into the water passage hole. Yes, more preferred.

Further, if a drainage groove communicating with a drainage hole provided in the bottom is provided on the inner surface of the bottom of the container body, drip generated from marine products and the like contained in the container and ice in the container are melted. Not only can wastewater such as water be collected by the drainage groove and reliably drained out of the container through the drainage hole, but also the quality of the marine products and the like contained in the container coming into contact with the wastewater such as drip and ice melt water. In this case, it is preferable because the lowering is prevented and the quality can be more reliably maintained. In this case, when the bottom surface of the drainage groove is provided to be inclined toward the drainage hole, the sewage or the like flowing into the drainage groove is preferable. Is more preferable because it can be quickly drained from the drain hole.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a cold storage container according to the present invention.

FIGS. 1 to 16 show one embodiment of a cold storage container according to the present invention.
This cold storage container is shown by way of example, and comprises a container body 1 having a substantially rectangular shape in a plan view, and a lid 2 fitted into an upper opening thereof to close the upper opening. The opening of the container body 1 is closed by fitting the fitting ridge 5 provided on the upper end surface of the side wall 4 of the container body 2 into the fitting groove 3 provided around the container body 2. I have. Upper surface 2a of the lid 2
At the peripheral portion of the container, a convex portion 6 is provided annularly, and as shown in FIGS.
A gap A is formed between the upper container body lower surface 1a and the upper container body lower surface 1a. Further, legs 7 are provided at each of the four corners of the lower surface 1a of the container body. This leg 7 is shown in FIG.
As shown in FIGS. 3 and 16, when the container is placed directly on the floor F or the like, a gap B is formed between the container body lower surface 1a and the floor F.
Is formed, and when the containers are stacked, they are fitted into the annular convex portion 6 of the lower lid upper surface 2a. Both the container body 1 and the lid 2 are made of polystyrene resin such as expanded polystyrene resin, polyolefin resin such as expanded polyethylene resin or expanded polypropylene resin, or foamed copolymer such as styrene and ethylene or propylene. It is made of synthetic resin.

The bottom 8 of the container body 1 is provided with four drain holes 9 which are open to the lower surface 1a of the container body 1 near the corners of the container body 1. The bottom 8 has a plurality of drainage grooves 11 formed in the inner surface of the bottom 8 so as to be vertically and horizontally connected to the recess 10. The drain hole 9 is provided in the container body lower surface 1a.
When the container is placed directly on the floor F or the like, the waste water in the container is removed from the gap B formed between the floor F and the lower surface 1a of the container body. It is designed to be discharged, and in the illustrated example, it is opened in a groove 14 formed in a state of being released outward from the leg 7. In addition, the fitting ridges 5 at the four corners of the container body 1 include:
Container body lower surface 1a penetrating vertically through side wall 4 of container body 1
The through hole 15 is opened. This through hole 15
Also, like the drain hole 9, it opens outside the leg 7 on the lower surface 1 a of the container body.

On the other hand, the upper surface 2a of the lid 2, which is surrounded by the annular convex portion 6, has four corners at which the lower lid 1a extends from the drain hole 9 of the upper container body lower surface 1a when the containers are stacked. Groove 1 serving as a water passage space for sewage and the like discharged to upper surface 2a
6, the groove 16 extends to notches 17 provided at four corners of the annular convex portion 6, and the notches 17
A through hole 18 is formed in the fitting groove 3 in the lower surface 2a of the lid at a position communicating with the through hole 15 provided in the container body 1 when the lid is closed. By the hole 18 and the through-hole 15 formed in the container body 1, the water passing through the lid 2 and the side wall 4 of the container body 1 in the closed state up and down to open on the lid upper surface 2a and the container body lower surface 1a. A hole 19 is formed. Further, the center of the lid upper surface 2a surrounded by the annular convex portion 6 is raised,
It is formed in a state inclined in four directions so as to gradually lower from here toward the peripheral portion.

There is no particular limitation on the inner diameter of the through holes 15 and 18 constituting the water holes 19 penetrating the container up and down, taking into account the size of the container, the thickness of the side wall 4 of the container body, the strength and the like. It may be appropriately determined within a range in which sewage and the like can flow down, but in the case of a container used as a general fish box, it may be about several mm to 10 mm. Also, the bottom 8 of the container body 1
Although there is no particular limitation on the inner diameter of the drain hole 9 provided in the above, the diameter may be about several mm to 10 mm in a normal case, similarly to the water passage hole 19 described above. Furthermore, drainage grooves 11 formed in the bottom 8 of the container body
There are no particular restrictions on the width, depth, etc. of the
The depth may be about 10 mm and the depth may be about several mm.

In the drawing, reference numeral 20 denotes a concave portion provided at two positions on the upper end portions of a pair of opposing short side walls 4B, 4B of the container body 1 for putting a finger on the lid when the lid is opened. Two more
1 is a pair of opposite short side walls 4 of the container body 1.
B, 4B, a handle provided at the center of the lower part for lifting the container.

In the above-mentioned cold storage container, marine products such as fish and shellfish are stored in the container together with ice as a cooling material, and the marine products and the like are stored in a frozen state or a cold state, or transported by truck or the like. I do. At this time, sewage such as drip generated from marine products and the like contained in the container and water in which ice in the container is melted are provided at the four corners of the bottom from the drainage groove 11 formed on the inner surface of the bottom 8 of the container body 1. Water collecting recess 1
The water is discharged to the outside of the container body 1 through a drain hole 9 which is inside the container body 0 and opens in the lower surface 1a of the container body. At this time, the drain groove 11 provided on the inner surface of the bottom of the container body 2 and the drain hole 9
If the concave portion 10 for collecting water around the container is provided so as to be inclined toward the drain hole 9, waste water such as drip and ice melt water generated in the container can be efficiently discharged by the drain groove 11 and the like. Water can be collected well and quickly discharged out of the container through the drain hole 9.

When the above-mentioned containers are stored or transported in a stacked manner, the waste water in the container discharged out of the container from the drain hole 9 of the upper container body 1 is removed from the upper surface 2a of the lower cover. It is discharged into the annular projection 6. This lid upper surface 2a
The sewage discharged upward flows into the through hole 18 opened in the upper surface 2a of the lid from the groove 16 as a water passage space, and
Then, the water flows down through a water passage hole 19 composed of a through hole 18 and a through hole 15 that penetrates vertically through the side wall 4 of the container body 1 and opens in the container body lower surface 1a.
Flows downward through a water passage hole 19 provided in the lower container, and by repeating this sequentially, flows out from the gap B between the lower surface 1a of the lowermost container body and the floor F onto the floor F. .

In the above case, as shown in the figure, when the containers are stacked, the lid upper surface 2a and the container body lower surface 1a
, Waste water flowing out from the drain hole 9 provided in the bottom portion 8 of the container main body 1 onto the lid upper surface 2a passes through the water passage hole 19 ( It easily flows toward the opening of the through hole 18) of the lid 2. Furthermore,
If the lid upper surface 2a is formed so as to be inclined so as to gradually decrease from the central portion toward the peripheral portion, sewage discharged from the drain hole 9 of the upper container body lower surface 1a to the lower lid upper surface 2a. Along the inclined surface with the water passage hole 19 (lid 2).
Water can be quickly collected toward the opening of the through hole 18).

Further, as shown in the figure, sewage or the like discharged from the drain hole 9 of the upper container body 1 to the lower lid upper surface 2a is supplied to the lid upper surface 2a through the water passage holes 19 of the lid upper surface 2a. By providing a groove 16 serving as a water flow space leading to the water, the wastewater flowing out from the drain hole 9 of the upper container body 1 to the lower lid upper surface 2a is reliably collected toward the water flow hole 19. Further, by providing the bottom surface of the groove 16 provided on the upper surface 2a of the lid with an inclination toward the opening of the water passage hole 19, that is, the opening of the through hole 17 provided on the lid 2, drainage is performed. Sewage drained from the hole 9 can be quickly collected toward the water passage hole 19.

Further, as shown in FIG. 16, when the containers are stacked in a back direction, that is, when the stacked containers are stacked in different directions in order to prevent collapse of the stacked containers, The opening of the water passage hole 19 (the through hole 15 of the container body 1) that opens on the lower surface 1a of the main body is formed on the upper surface 2a of the lid body of the container c that is stacked in the lower position in a different direction. The drain hole 9 at the bottom of the container main body 1 of the upper container c 'does not coincide with the opening of the through hole 18) of the lid 2 and the drain hole 9 at the bottom of the container main body 1 of the upper container c' is turned downward. An opening is provided at a position from the center of the lid upper surface 2a in the stacked containers c. As described above, even when the positions of the water holes of the upper container and the lower container do not coincide with each other by stacking the containers in different directions, as described above, the lid upper surface 2a
Is provided so as to be gradually lowered from the central portion toward the water passage hole 19 at the corner, so that the lower container stacked in a different direction from the upper container c ' No matter where the wastewater is discharged on the lid upper surface 2a of the container c, water is collected along the inclined surface toward the water passage hole 19 opened in the lid upper surface 2a, and downward through the water passage hole 19. Can flow down.

When the upper surface 2a of the lid is formed to be inclined as described above, the central portion of the upper surface 2a of the lid is raised as shown in FIG. 19 (the through hole 18 of the lid 2) may be provided to be inclined, respectively, or, as shown in FIG. 17, it may be formed to be inclined only to the front or rear or left or right from the central portion. Further, the groove 16 in the lid upper surface 2a is not always required to be provided, and the sewage and the like discharged on the lid upper surface 2a can be passed to the water holes 19 only by inclining the lid upper surface 2a as described above. It can be made to flow in, and furthermore, it is not always necessary to provide the drainage groove 11 of the container body bottom 8, and it is sufficient to simply provide a through hole as the drainage hole 9 in the bottom 8.
In this manner, when the lid upper surface 2a is formed on a simple inclined surface without providing the groove 16, and the drain hole 9 is formed as a mere through hole without providing the drain groove 11 on the container body bottom portion 8. In addition, the structure of the container becomes extremely simple, and the molding process becomes easy.

When the containers are placed directly on the floor surface, for example, when the containers are placed directly on the floor surface, the leg portion 7 forms a gap B between the lowermost container body lower surface 1a and the floor surface F when the containers are stacked. This facilitates drainage of sewage from the openings of the drain hole 9 and the water passage hole 19 in the lower surface 1a of the container body to the floor surface F. The leg portion 7 can be fitted into the annular convex portion 6 of the lid upper surface 2a, and forms a gap B between the container main body lower surface 1a and the floor surface F as described above to form the container main body lower surface 1a. The drainage holes 9 and the openings of the water holes 19 can be used as long as they can drain wastewater to the floor F. For example, various shapes as shown in FIGS. 18 and 19 can be employed. Further, the leg portion 7 is provided with an annular convex portion 6 on the lid upper surface 2a.
Container body lower surface 1 excluding the peripheral portion of the container body lower surface 1a in contact with the bottom and the portion where the water passage hole 19 and the drain hole 9 are formed.
a, but when the legs 7 are independently provided at the four corners of the lower surface 1a of the container body as shown in the figure, the direction of the container is changed as shown in FIG. Even when the container is stacked on the back, the legs 7 provided on the lower surface 1a of the upper container body do not overlap the annular protrusions 6 provided on the peripheral portion of the upper surface 2a of the lower container. The leg portion 7 is located, and the upper container body lower surface 1a is in contact with the upper surface of the annular convex portion 6 provided on the peripheral portion of the lower lid upper surface 2a. Since the ventilation between the water hole 19 and the outside is blocked by the annular convex portion 6, it is more preferable because the cool state in the container can be more reliably maintained.

The through hole 18 is formed on the upper surface 2a of the cover.
The position of the opening of the through hole 15 opening in the lower surface 1a of the container main body does not necessarily have to match the position of the opening of the water passage hole 19 in the upper and lower containers when the containers are stacked. The person who is doing it is the water hole 19 of the upper container.
Needless to say, the sewage can flow down to the water passage hole 19 of the lower container directly from the container, and prompt drainage is possible. Further, the opening diameter of the opening of the through hole 18 opening on the lid upper surface 2a and the opening diameter of the through hole 15 opening on the container body lower surface 1a may be the same,
The opening of the through hole 18 in the upper surface 2a of the lid is
Is formed larger than the opening of the through hole 15 of
When the containers are stacked, the sewage discharged from the opening of the water passage hole 19 opened on the lower surface 1a of the upper container main body surely flows into the opening of the water passage hole 19 opened on the upper surface 2a of the lower lid body. Can be.

Further, the drain hole provided in the bottom portion 8 of the container body 1 may be provided so as to open only to the lower surface 1a of the container body 1 like the drain hole 9 in the illustrated example, but it may be a conventionally known water hole. It is optional to employ a sealed structure.

[0031]

As described above, in the cold storage container according to the present invention, for example, marine products such as fish and shellfish are stored in this container together with ice as a cooling material, and the marine products such as fish and shellfish are stacked. When stored in a frozen or insulated state, or when transported by truck or the like, by discharging contaminated water such as drip or ice melted water generated from marine products from the drain hole provided at the bottom of the container body, There is no possibility that the marine products and the like stored in the container come into contact with the sewage such as the water in which the drip or ice melts to reduce the quality, and even when the containers are stacked, the sewage discharged from the drain hole Is flowing directly from the bottom surface of the lowest container to the floor surface through the water holes provided through the container up and down, so that sewage does not flow down the container side surface and the container side is wet when transported Etc. Or exacerbate sex, never or impair the appearance of the container. Moreover, an annular convex portion is provided on the upper surface of the lid, and the drainage hole opened on the lower surface of the upper container body discharges sewage and the like in the container to the upper surface of the lid, and the through hole is opened on the upper surface of the lid. Because it is configured to flow into the container, it is discharged to the upper surface of the lower lid, not only in the case of bar stacking in which containers are aligned in the same direction, but also in the case of Waste water and the like can be reliably flowed into the through-hole opened on the upper surface of the lid, so that a drain passage for draining waste water and the like in the container penetrates the side wall of the container body at the bottom inside the container body. As in the case of the conventional cold storage container formed by communicating with the through hole formed by the above, the waste water discharged from the through hole on the lower surface of the upper container body does not flow into the through hole on the upper surface of the lower lid, and the outer surface of the container Is not contaminated. Therefore, unlike the same type of conventional container provided with a through hole for drainage, the cold storage container of the present invention is particularly useful in a fish box market where back stacking is essential.

Further, a water passage hole penetrating the container up and down is provided at a relatively thick corner on the side wall of the container body, and a drain hole at the bottom of the container is provided with a water passage hole penetrating the container. By providing it separately from the space, the strength of the container as in the case of the conventional cold storage container is provided in which a drainage channel communicating with the bottom inside the container body is provided in the through hole of the side wall at the corner between the container bottom and the side wall Also, since the drainage hole may simply be a hole that penetrates vertically through the bottom of the container body, the forming process is also easy. Furthermore, since the drain hole does not communicate with the water passage hole penetrating the container, there is no possibility that the waste water flowing down through the water passage hole flows into the container from the drain hole.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a cold storage container according to the present invention in an open state.

FIG. 2 is a perspective view of the refrigerating container in an open state when viewed from below.

FIG. 3 is a plan view of the cold storage container.

FIG. 4 is a front view of a lid.

FIG. 5 is a side view of the lid.

FIG. 6 is a bottom view of the lid.

FIG. 7 is a plan view of the container body.

FIG. 8 is a front view of the container body.

FIG. 9 is a side view of the container body.

FIG. 10 is a bottom view of the container body.

FIG. 11 is a sectional view of the cold storage container taken along line AA in FIG. 3;

FIG. 12 is a sectional view of the cold storage container taken along the line BB in FIG. 3;

FIG. 13 is a cross-sectional view of the cold storage container taken along the line CC in FIG. 3, showing a state in which the containers are stacked.

FIG. 14 is a cross-sectional view of the cold storage container taken along the line DD in FIG. 3, showing a state in which the containers are stacked.

FIG. 15 is a perspective view showing a main part of the stacked containers in a partially broken state.

FIG. 16 is a schematic cross-sectional view showing a state in which the containers are stacked on the back.

FIG. 17 is a perspective view of a cold storage container according to another embodiment in an open state.

FIG. 18 is a perspective view of a container body showing another embodiment of the leg portion as viewed from below.

FIG. 19 is a perspective view of a container body showing a still another embodiment of the leg portion as viewed from below.

[Fig. 20] 1 of bar stacking in which containers are aligned and stacked
The typical perspective view which shows an example.

FIG. 21: Back stacking 1 for stacking containers in different directions
The typical perspective view which shows an example.

[Explanation of symbols]

1 container main body, 1a container main body lower surface, 2 lid,
2a Lid upper surface, 3 Fitting groove, 4 Side wall, 5
Ridge for fitting, 6 annular ridge, 7 leg, 8 bottom,
9 drain holes, 10 recesses, 11 drain grooves, 1
4 grooves, 15 through holes, 16 grooves, 17 cut portions, 18 through holes, 19 water holes, 20 recesses,
21 handle part, A gap formed between the upper surface of the upper container body and the upper surface of the lower lid when the containers are stacked, B gap formed between the lower surface of the container body and the floor surface, c, c 'Container.

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B65D 81/18 B65D 21/02 B65D 81/26 B65D 81/38 B65D 85/50

Claims (5)

(57) [Claims] An insulated container comprising a container body and a lid made of a foamed synthetic resin, wherein an annular convex portion is provided on a peripheral portion of an upper surface of the lid, and the containers are stacked on a lower surface of the container body. A leg portion fitted inside the annular convex portion on the upper surface of the lid when the lid is in the closed state, and vertically penetrates the lid and the container body side wall portion inside the annular convex portion at the corner of the container. And a drain hole opened on the bottom surface of the container body, a drain hole opened on the bottom surface of the container body, and a drain hole formed on the lower surface of the upper container body when the containers are stacked. A water passage space for guiding water discharged to the upper surface of the lower lid from the upper surface of the lid to a water hole formed in the upper surface of the lid. 2. A lower part of the upper container body and a lower part of the lower container body serving as a water passage space for guiding water discharged from the drain hole on the lower surface of the upper container body to the upper surface of the lower lid to the water hole opened on the upper surface of the lid member. The cold storage container according to claim 1, wherein a gap is formed between the lid and the upper surface of the lid. 3. The cold storage container according to claim 1, wherein the upper surface of the lid is formed so as to be inclined so as to become lower from a central portion to a peripheral portion. 4. A groove is provided on the upper surface of the lid as a water passage space for guiding water discharged from the drain hole on the lower surface of the upper container body to the upper surface of the lower lid to a water hole opened on the upper surface of the lid. The cold storage container according to any one of claims 1 to 3. 5. A drainage groove communicating with a drainage hole provided in the bottom of the container body is provided on the inner surface of the bottom of the container body.
A cold storage container according to any one of the above.