JP2013256302A - Heat insulation box and method of manufacturing heat insulation box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulation box having high resistance against dirt, having a simple structure, and capable of being easily assembled and disassembled.SOLUTION: A heat insulation box 1 includes a plate-like bottom surface plate 2 comprising a heat insulating material and a plurality of side plates 31-34, and can be assembled in a box shape by standing the side plates 31-34 on outer peripheral edges 2a of the bottom surface plate 2. The bottom surface plate 2 and the side plates 31-34 are sealed by two facing plastic films 4 in such a state that sides 31a-34a of the side plates 31-34 are in the vicinity of the outer peripheral edges 2a of the bottom surface plate 2.

Description

  The present invention relates to a heat insulating box having a plate-like bottom plate made of a heat insulating material and a plurality of side plates, and capable of being assembled into a box shape with the side plates standing on the outer periphery of the bottom plate, and a method for manufacturing the same. is there.

  Conventionally, the cultivation tank used for hydroponics is manufactured with the stainless steel strong against rust, and is comprised by the water tank part which accommodates the aqueous solution for cultivating a plant, and the cover part which covers the opening of a water tank part.

  A heat insulating material for heat insulation is stuck inside each of the water tank portion and the lid portion (for example, Patent Document 1 below). The water tank portion has a structure that does not leak water, and since the heat insulating material stuck on the inner side and the aqueous solution are always in contact with each other, the heat insulating material is easily contaminated.

  Further, Patent Document 2 below includes a foldable box that includes at least a bottom plate, a lid plate, and four side plates, and the side plate is vertically assembled and a side plate is folded horizontally. There is described a heat insulating container composed of a bottom plate, a cover plate, and a heat insulating material covering the inner side surfaces of the side plates. In this heat insulating container, since the bag-shaped inner cover is provided inside the heat insulating material, the heat insulating material can be prevented from being contaminated. However, since this insulated container has a complicated structure, it is complicated to assemble and fold, and tends to be expensive.

JP 2008-253165 A JP 2008-68871 A

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heat insulating box that is strong against dirt, has a simple structure, and can be easily assembled and disassembled.

  The above object can be achieved by the present invention as described below. That is, the heat insulation box according to the present invention has a plate-like bottom plate made of a heat insulation material and a plurality of side plates, and can be assembled into a box shape with the side plates standing on the outer periphery of the bottom plate. The bottom plate and the side plate are sealed with two opposing plastic films in a state where one side of the side plate is close to the outer peripheral edge of the bottom plate.

  The effect of the heat insulation box which has this structure is demonstrated. Since the bottom plate and the side plate made of the heat insulating material according to the present invention are sealed with a plastic film, they are strong against dirt, and even if the plastic film is dirty, it is easy to clean. In addition, the bottom plate and the side plate are sealed with two opposing plastic films in a state in which one side of the side plate is close to the outer peripheral edge of the bottom plate. Since it is easy to position with respect to the outer peripheral edge, it can be easily assembled in a box shape. On the other hand, when disassembling, it can be easily disassembled by tilting the side plate outward with reference to the outer peripheral edge of the bottom plate. Furthermore, since the heat insulation box of the present invention has a simple structure, it can be provided at a low price.

  Furthermore, since the bottom plate and the side plate are sealed in a plastic film, they do not fall apart even after being disassembled, and are preferable for storage and transportation. In addition, the bottom plate and the side plate can be stacked and transported by arranging them in a plane after disassembly.

  In the above, it is preferable to provide holding means capable of holding the side plate upright.

  According to this configuration, the box shape can be easily maintained even when the side plate is assembled on the outer peripheral edge of the bottom plate in a box shape.

  In the above, it is preferable that the holding means is a connector that connects side edge portions of adjacent side plates.

  According to this configuration, even when the side plates are stood on the outer peripheral edge of the bottom plate and assembled in a box shape, the side plates can be easily connected to each other to maintain the box shape.

  In the above, it is preferable that the holding means is a frame surrounding the periphery of the plurality of side plates.

  According to this configuration, even when the side plate is set up on the outer peripheral edge of the bottom plate and assembled in a box shape, the side plate can be prevented from falling outward and the box shape can be easily maintained.

  In the above, it is preferable to provide a thin film material having excellent light shielding properties between the side plate and the plastic film.

  According to this structure, the heat insulation box body excellent in light-shielding property can be provided easily.

  In the above, it is preferable to provide a reinforcing plate between the bottom plate and the plastic film.

  According to this structure, the intensity | strength of the bottom face of a heat insulation box can be improved easily.

  The above object can be achieved by the present invention as described below. That is, the method for manufacturing a heat insulating box according to the present invention has a plate-like bottom plate made of a heat insulating material and a plurality of side plates, and can be assembled in a box shape with the side plates standing on the outer periphery of the bottom plate. A method for manufacturing a heat insulating box, wherein a bottom plate and a side plate are disposed between two opposing plastic films in a state where one side of the side plate is close to the outer peripheral edge of the bottom plate. It is characterized in that it is sealed by thermally welding plastic films around each other.

  The effects of the heat insulating box with such a configuration are as described above, and the method for manufacturing a heat insulating box according to the present invention is resistant to dirt, has a simple structure, and can be easily assembled and disassembled. Can be provided.

A perspective view and a cross-sectional view showing an example of a heat insulation box in an exploded state A perspective view and a cross-sectional view showing an example of the heat insulation box in an assembled state The perspective view which shows an example of the coupling tool which connects the side edge parts of an adjacent side plate. The perspective view which shows another example of the coupling tool which connects the side edge parts of an adjacent side plate. The perspective view which shows another example of the coupling tool which connects the side edge parts of an adjacent side plate. A perspective view showing an example of a frame surrounding the periphery of a plurality of side plates The perspective view which shows another example of the frame surrounding the circumference | surroundings of several side plates The perspective view which shows another example of the frame surrounding the circumference | surroundings of several side plates A perspective view and a sectional view of a heat insulation box according to another embodiment Sectional drawing of the heat insulation box which concerns on another embodiment The perspective view of the heat insulation box which concerns on another embodiment Schematic diagram when using an insulated box as a cultivation tank A perspective view and a sectional view of a heat insulation box according to another embodiment

  DESCRIPTION OF EMBODIMENTS Preferred embodiments of a heat insulation box and a method for producing the same according to the present invention will be described with reference to the drawings. FIG. 1: has shown an example of the heat insulation box of the decomposition state which concerns on this invention, (a) is a perspective view, (b) is AA sectional drawing of the heat insulation box of (a). FIG. 2: has shown the heat insulation box of the assembly state, (a) is a perspective view, (b) is BB sectional drawing of the heat insulation box of (a). In the perspective view of FIG. 2A, the plastic film is omitted for convenience of explanation.

  The heat insulating box 1 has a plate-like bottom plate 2 made of a heat insulating material and a plurality of side plates, and is assembled in a box shape by standing the side plates on the outer peripheral edge 2 a of the bottom plate 2. Examples of the heat insulating material include urethane foam, phenol foam, and polystyrene foam. The thickness of the bottom plate and the side plate is, for example, 10 to 30 mm.

  In the present embodiment, the bottom plate 2 has a substantially square plate shape, and the number of side plates is four so as to correspond to the four sides of the bottom plate 2. The four side plates include a pair of first side plates 31 and 32 facing each other and a pair of second side plates 33 and 34 facing each other. Each of the four side plates has a substantially rectangular plate shape. The first side plates 31 and 32 and the second side plates 33 and 34 have the same height, but the first side plates 31 and 32 are slightly narrower than the second side plates 33 and 34. Thereby, as shown in FIG. 2, in the assembled state, the first side plates 31 and 32 are sandwiched between the second side plates 33 and 34 facing each other.

  As shown in FIG. 1, the bottom plate 2 and the side plates 31 to 34 are two plastic films 4 facing each other in a state in which one side 31 a to 34 a of the side plates 31 to 34 is close to the outer peripheral edge 2 a of the bottom plate 2. It is enclosed. Examples of the material of the plastic film 4 include polyethylene and polypropylene. The plastic film 4 may be transparent, translucent, or opaque. The thickness of the plastic film 4 is, for example, 0.1 to 0.2 mm.

  The plastic film 4 of this embodiment is substantially square. The bottom plate 2 and the side plates 31 to 34 are disposed between the two plastic films 4. The bottom plate 2 and the side plates 31 to 34 are sealed by thermally sealing and sealing the four seal portions 41 of the two plastic films 4. The width of the seal portion 41 is, for example, 500 to 1200 mm.

  A known impulse heat sealer can be used for sealing between the plastic films 4. The impulse heat sealer can melt and seal the sealed part of the object to be sealed by sandwiching and pressing the object to be sealed between a pair of opposing pressing parts and instantaneously heating the impulse heater. .

  A predetermined gap d is provided between one side 31 a to 34 a of the side plates 31 to 34 and the outer peripheral edge 2 a of the bottom plate 2. The gap d is at least equal to or greater than the thickness of the bottom plate 2. By providing such a gap d, the side plates 31 to 34 can be placed on the top surface of the bottom plate 2 as shown in FIG. 2 when the side plates 31 to 34 are raised on the outer peripheral edge 2 a of the bottom plate 2.

  The heat insulation box 1 is formed between the two plastic films 4 facing the bottom plate 2 and the side plates 31 to 34 in a state where the sides 31a to 34a of the side plates 31 to 34 are close to the outer peripheral edge 2a of the bottom plate 2. The plastic film 4 is sealed by heat welding around the bottom plate 2 and the side plates 31 to 34.

  It is preferable that the heat insulation box 1 is provided with the holding means which can hold | maintain in the state which stood the side plates 31-34. As an example of the holding means, there is a connector that connects the side edges of adjacent side plates in a state where the side plates 31 to 34 are upright. An example of the connecting tool is a tape 5 that folds the corner 4a of the plastic film 4 as shown in FIG. 3A and affixes it to the surfaces of the first side plates 31 and 32. However, an adhesive or the like may be used.

  Moreover, as shown in FIG. 3B, a clip 51 that sandwiches the corner 4a of the plastic film 4 together with the side plate may be used as a connector. The clip 51 has a substantially U-shaped cross section, and can sandwich the side plate from above. The clip 51 is formed of metal, plastic or the like.

  Furthermore, as shown in FIG. 3C, a clip 52 that sandwiches two adjacent side plates at the same time may be used as a connector. The clip 52 is substantially L-shaped in plan view. According to the clip 52, the side plates 31 to 34 can be held upright and the corners of the heat insulating box 1 can be reinforced. The clip 52 is formed of metal, plastic or the like.

  Moreover, as an example of a holding means, the frame 6 which surrounds the circumference | surroundings of the several side plates 31-34 in the state which stood the side plates 31-34 as shown to FIG. 4A is mentioned. 4A is a rectangular tube that covers a part of the side plates 31 to 34 in the height direction, but the frame 6 is a rectangular tube that covers all of the side plates 31 to 34 in the height direction. It may be a shape. As shown in FIG. 4B, the frame body 6 may include a bottom portion 61 that covers the bottom plate 2. Moreover, the frame 6 may be provided with a lid 62 that covers the upper side of the heat insulating box 1 as shown in FIG. 4C. The lid 62 may be separately provided with an opening. In addition, you may use said tape 5 and the frame 6 simultaneously.

<Another embodiment>
(1) In the above-described embodiment, the bottom plate 2 has a substantially square plate shape, but is not limited thereto. That is, the shape of the bottom plate 2 may be a triangular plate shape, a polygonal plate shape of pentagon or more, or a circular shape. The number of side plates is appropriately set according to the shape of the bottom plate 2.

  (2) In the above-described embodiment, the four seal portions 41 of the plastic film 4 are sealed. However, the place to be sealed is not limited to this. As shown in FIG. 5, you may make it seal the outer periphery of the baseplate 2 and the side plates 31-34, respectively. Thereby, the bottom plate 2 and the side plates 31 to 34 do not move between the two plastic films 4, and assembly and disassembly can be easily performed.

  (3) In the above-described embodiment, the two plastic films 4 are sealed in the vicinity of the lowermost portion of the bottom plate 2 in the thickness direction, but the place to be sealed is not limited to this. For example, as shown in FIG. 6, the bottom plate 2 may be sealed near the center in the thickness direction.

  (4) In the present invention, a thin film material having excellent light shielding properties may be provided between the side plate and the plastic film 4. Examples of such a thin film material include a colored film and colored paper, which are provided inside the transparent plastic film 4. Moreover, you may make it further improve the heat insulation performance of the heat insulation box 1 by providing the thin film material which is excellent in heat insulation between a side plate and the plastic film 4. FIG.

  (5) In the present invention, a reinforcing plate may be provided between the bottom plate 2 and the plastic film 4. By providing the reinforcing plate, the strength of the bottom surface of the heat insulating box 1 can be easily improved. A reinforcing plate may also be provided between the side plate and the plastic film 4.

  (6) The holding means may be a U-shaped frame 6 in plan view as shown in FIG.

  (7) The heat insulation box 1 of this invention is suitable as a cultivation tank used for hydroponics, for example. Drawing 8 is a mimetic diagram showing an example at the time of using heat insulation box 1 as a cultivation tank. In this example, the bottom plate 2 is formed with a supply hole 71 for supplying liquid fertilizer and a discharge hole 72 for discharging. As the holding means, a box-shaped frame 6 that covers the bottom plate and the side plate is used. Moreover, when using the heat insulation box 1 as a cultivation tank, the upper part of the heat insulation box 1 is covered with the lid | cover 8 in which opening was provided. A heat insulating material is provided inside the lid 8 in order to improve the heat insulating performance. The frame body 6 and the lid 8 are made of stainless steel or the like.

  (8) Moreover, the heat insulation box 1 of this invention is suitable as a water tank which puts a fish other than said cultivation tank, for example. Moreover, the heat insulation box 1 of this invention can also be used as a heat insulation box or a cold insulation box.

  (9) In the above-described embodiment, the bottom surface of the heat insulating box 1 is composed of one bottom plate 2, but it may be composed of two or more bottom plates. FIG. 9 shows an example in which the bottom surface of the heat insulating box 1 is composed of four bottom plates 2. Between the four bottom plates 2, the two plastic films 4 are alternately sealed near the top and bottom of the bottom plate 2 in the thickness direction. The pair of first side plates 31 and 32 facing each other has the same configuration as the bottom plate 2. According to this configuration, when the heat insulating box 1 is not used, the bottom surface can be alternately folded between the adjacent bottom surface plates 2, which is preferable for storage and transportation.

DESCRIPTION OF SYMBOLS 1 Heat insulation box 2 Bottom plate 2a Outer periphery 4 Plastic film 5 Tape 6 Frame 31-34 Side plate 41 Seal part

Claims (7)

It has a plate-like bottom plate made of a heat insulating material and a plurality of side plates, and is a heat insulating box that can be assembled in a box shape with the side plates standing on the outer periphery of the bottom plate,
A heat insulating box characterized in that a bottom plate and a side plate are sealed with two opposing plastic films in a state where one side of the side plate is close to the outer peripheral edge of the bottom plate.   The heat insulation box according to claim 1, further comprising holding means capable of holding the side plate in an upright state.   The heat insulating box according to claim 2, wherein the holding means is a connector that connects side edge portions of adjacent side plates.   The heat insulating box according to claim 2, wherein the holding means is a frame that surrounds a plurality of side plates.   The heat insulating box according to any one of claims 1 to 4, further comprising a thin film material having excellent light shielding properties between the side plate and the plastic film.   The heat insulation box according to any one of claims 1 to 5, further comprising a reinforcing plate between the bottom plate and the plastic film. It has a plate-like bottom plate made of a heat insulating material and a plurality of side plates, and is a method of manufacturing a heat insulating box that can be assembled in a box shape with the side plates standing on the outer periphery of the bottom plate,
Place the bottom plate and the side plate between two opposing plastic films with one side of the side plate close to the outer periphery of the bottom plate, and heat-seal the plastic films around the bottom plate and the side plate The manufacturing method of the heat insulation box characterized by enclosing by.

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