JPH08210766A - Open show case - Google Patents

Abstract

PURPOSE: To provide an open show case capable of improving cold air leakage prevention effect from an opening with a simplified structure and of reducing consumed power. CONSTITUTION: There are at least two night covers 46, 47 covering an opening part 21. In the night covers 46, 47, mutually adjoining one ends are overlapped in the state where they are pulled out, and the other ends are extended externally from the opening part 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an open showcase provided with a night cover for covering an opening when a store is closed.

[0002]

2. Description of the Related Art Conventionally, an open showcase installed in a store such as a supermarket or a convenience store is equipped with a freely-drawable cover called a night cover (hereinafter referred to as a night cover). When the store is closed without payment, the night cover is pulled out and the opening is covered to prevent unnecessary cooling air from flowing out of the opening and reduce power consumption. Has been done.

In particular, in a long open showcase having a large opening, two (or more) night covers are arranged side by side to cover the openings, but between the night covers. Since there was a gap in the pulled-out state, cold air was leaking from this gap.

[0004]

In order to prevent this, for example, Japanese Utility Model Laid-Open No. 61-159783 (F25D).
11/00), the end portions of adjacent night covers are arranged so as to overlap each other so that no gap is formed between the pulled out night covers. However, the gap is formed between the side plates on both sides of the opening and the night. Since it also occurs between the cover and it, it had no effect on cold air leaks from it.

On the other hand, Japanese Utility Model Laid-Open No. 59-4983 (F2
5D23 / 02), the windshield plate for closing the gap between the night cover and the side plate is attached to the side plate.
With such a configuration, there is a problem that the structure becomes complicated, the number of parts increases, and the cost rises significantly.

The present invention has been made to solve the above-mentioned conventional technical problems, and the effect of preventing cold air from leaking from the opening can be improved with a simple structure to reduce power consumption. The purpose is to provide an open showcase.

[0007]

The open showcase according to the invention of claim 1 is provided with at least two night covers covering the openings, and each night cover is mutually pulled out. One end portion adjacent to the above overlaps with the other end portion, and the other end portion projects outward from the opening portion.

According to another aspect of the present invention, there is provided an open showcase in which at least two night covers cover a heat insulating wall, side plates attached to both sides of the heat insulating wall, and an opening surrounded by the heat insulating wall and the side plates. Each of the night covers has one end portion adjacent to each other in the pulled-out state and overlaps the other end portion to the side plate.

An open showcase according to a third aspect of the present invention is provided with at least two night covers that cover the openings of the heat insulating walls, and a plurality of heat insulating walls can be connected to each of the night covers. In the pulled-out state, one end portions adjacent to each other overlap each other, and the other end portion projects to another heat insulating wall connected thereto.

According to the open showcase of the invention of claim 4, in each of the above inventions, the mounting position of each night cover can be moved in the width direction of the opening.

An open showcase according to a fifth aspect of the invention is the open showcase according to the first, second, or third aspect of the invention, in which a storage portion is provided between the exterior panel attached to the opening and the interior panel provided inside the exterior panel. And each night cover is installed in this storage part.

In the open showcase according to a sixth aspect of the present invention, in the above invention, a gap is formed on the opening side of the storage portion in the width direction of the opening, and each night cover is pulled out from the gap. It is a thing.

According to the seventh aspect of the present invention, in the open showcase according to the above-mentioned aspect of the invention, means for separating the overlapping one end portions of the night covers is provided in the storage portion.

The open showcase according to the invention of claim 8 is provided with a night cover covering the opening,
The night cover extends outward from the opening in the pulled-out state.

According to the open showcase of the invention of claim 9, in the invention of claim 1, claim 2, or claim 3, or claim 8, the night cover is permeable to water vapor, and even at a low temperature. It is made of a material that maintains the transmission characteristics.

According to the tenth aspect of the present invention, in the above open showcase, the opening is provided with the handrail, and the night cover is provided with the hook portion fitted to the outer surface of the handrail.

An open showcase according to an eleventh aspect of the present invention is the open showcase according to any one of the first or second aspects, the third aspect, or the eighth aspect, in which an edge member for stretching the night cover is provided at the tip of the night cover. The edge member is provided and is shorter than the entire width of the night cover.

An open showcase according to a twelfth aspect of the present invention is provided with a night cover covering the opening,
In addition to attaching the handrail to the opening, the night cover is made of a material that allows water vapor to pass through and maintains the permeation characteristics even at low temperatures. The tip of the night cover is fitted to the outer surface of the handrail. The hook portion is provided.

[0019]

According to the open showcase of the first aspect of the present invention, the one ends of the night covers that are adjacent to each other overlap each other in the pulled-out state, and the other end of the night cover projects outward from the opening. In addition to eliminating the gap between one end of each night cover, the other end also protrudes outward from the opening, between the side plates and other open showcases located on both sides of the opening. It becomes possible to effectively prevent or suppress the leakage of cool air from the opening by closing the gap.

Therefore, it is possible to greatly improve the operating efficiency and contribute to energy saving, and it is also possible to reduce the number of parts and the manufacturing cost because no special windshield plate is required. .

According to the open showcase of the second aspect of the present invention, since the one ends of the night covers which are adjacent to each other overlap with each other in the pulled-out state, and the other ends of the night covers project to the side plate. In addition to eliminating the gap between the one end portions, the gap between the other end portion and the side plate can be closed to effectively prevent or suppress the leakage of the cool air from the opening portion.

Therefore, it is possible to greatly improve the operating efficiency and contribute to energy saving, and it is also possible to reduce the number of parts and the manufacturing cost because no special windshield plate is required. .

According to the open showcase of the third aspect of the present invention, the one ends of the night covers adjacent to each other overlap each other in the pulled-out state, and the other ends of the night covers project to another heat insulating wall connected thereto. Therefore, in addition to eliminating the gap between one end of each night cover, closing the gap between the other end of the open showcase and the heat insulating wall of the open showcase at the other end, the opening of each open showcase It becomes possible to effectively prevent or suppress the leakage of cold air from the part.

Therefore, even when a plurality of heat insulating walls of the open showcases are connected, the operating efficiency can be greatly improved to contribute to energy saving, and a special windshield plate etc. are not required, so that the number of parts is reduced. And the manufacturing cost can be reduced.

According to the open showcase of the invention of claim 4, in addition to the above inventions, the mounting position of each night cover can be moved in the width direction of the opening. Can be arbitrarily adjusted according to the installation state of the open showcase, and can be adjusted to the optimum state for preventing cold air leakage.

Further, for example, at the time of shipping, the overlapping size is increased and each night cover is moved and placed inward, and is moved outward at the installation site of the open showcase,
Since it can be overlapped with the side plates and the night covers of other open showcases, it does not hinder the product transportation and installation work.

Further, according to the open showcase of the invention of claim 5, claim 1 or claim 2, or
In addition to the invention of claim 3, a storage portion is formed between the exterior panel attached to the opening and the interior panel provided inside thereof.
Since each night cover is attached to the inside of this storage part, each night cover can be concealed to improve the appearance.

In particular, according to the open showcase of the invention as defined in claim 6, a gap is formed on the opening side of the accommodating portion in the width direction of the opening, and the night covers are pulled out from the gap. The overlapping one ends of the pulled out night covers are in close contact with each other, further improving the cold air leakage prevention effect.

Further, according to the open showcase of the invention of claim 7, in addition to this, means for pulling apart one end of each overlapping night cover is provided in the storage portion.
The night covers do not interfere with each other during winding, and the operability of pulling out and winding the night cover is improved.

According to the open showcase of the invention of claim 8, since the night cover is extended outward from the opening in the pulled-out state, side plates and other open shows located on both sides of the opening. By closing the gap with the case, it is possible to effectively prevent or suppress the leakage of cool air from the opening. Therefore, especially when covering the opening with a single night cover, it is possible to greatly improve the operating efficiency and contribute to energy saving, as well as the need for a special windshield plate, etc. The manufacturing cost can be reduced.

According to the open showcase of the invention of claim 9, in addition to the invention of claim 1, claim 2, or claim 3, or claim 8, the night cover is made to transmit water vapor, In addition, since it is made of a material that maintains the permeation characteristics even at low temperatures, it is possible to prevent dew condensation on the night cover without forming a special hole or the like. Therefore, the leakage of cold air from the holes can be eliminated and the operation efficiency can be further improved.

According to the open showcase of the tenth aspect of the present invention, in addition to the above, a hook portion fitted to the outer surface of the handrail of the opening is provided at the tip of the night cover.
It also becomes possible to more effectively prevent the leakage of cool air from the opening by closing the gap in the opening at the tip of the night cover. In particular, since the dew condensation on the night cover is also prevented as described above, even when the night cover covers the outside of the handrail, the dew condensation does not stain the surroundings of the open showcase.

According to the open showcase of the invention of claim 11, in addition to the invention of claim 1, claim 2, claim 3, or claim 8, the edge member for tensioning the night cover is provided with a night cover. Since the edge members are shorter than the entire width of the night covers, the edge members do not interfere with the contact between the overlapping portions of the night covers and the front surfaces of the side plates and other heat insulating walls. Therefore, it becomes possible to more effectively prevent the cool air from leaking from the opening.

According to the open showcase of the twelfth aspect of the present invention, the night cover that covers the opening is made of a material that allows water vapor to pass therethrough and maintains the permeation characteristics even at low temperatures. Since the hook portion that fits on the outer surface of the handrail is provided at the tip of the cover, it is possible to prevent dew condensation on the night cover without forming a special hole or the like. Therefore, it is possible to improve the operation efficiency by eliminating the leakage of cold air from the holes. In addition, since the gap of the opening at the tip of the night cover can be closed, it is possible to effectively prevent the cool air from leaking from the opening. In particular, since the dew condensation on the night cover is also prevented as described above, even when the night cover covers the outside of the handrail, the dew condensation does not stain the surroundings of the open showcase.

[0035]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a front view of an open showcase 1 according to an embodiment of the present invention, and FIG. 2 is a vertical side view of the open showcase 1.
3 is an enlarged vertical side view of the upper end of the opening 2 of the open showcase 1, FIG. 4 is a side view of the upper portion of the opening 2 of the open showcase 1, and FIG. 5 is an opening 2 of the open showcase 1.
It is a vertical side view of the lower part.

The open showcase 1 of the embodiments shown in the above figures is a vertical refrigerating open showcase that is installed in a plurality of stores such as supermarkets, and has a heat insulating wall 2 having a substantially U-shaped cross section. , And side plates 3 and 3 attached to both sides of the heat insulating wall 2 at the installation site. An outer layer partition plate 4 and an inner layer partition plate 6 are attached to the inside of the heat insulating wall 2 with a space therebetween, and the space between the heat insulating wall 2 and the outer layer partition plate 4 is between the outer layer duct 7, the inner and outer layer partition plates 6 and 4. Is the inner layer duct 8, and the inside of the inner layer partition plate 6 is the storage chamber 9.

A plurality of shelves 11 ... Are erected in the storage room 9, and a deck pan 12 is provided at the bottom of the storage room 9.
The bottom duct 13 communicating with both the ducts 7 and 8 is provided below the deck pan 12. A fan case 14 having a blower (not shown) is installed in the bottom duct 13, and a cooler 16 included in the refrigeration system is vertically installed in the inner layer duct 8.

An outer layer discharge port 22 and an inner layer discharge port 23 are arranged side by side at the upper edge of the front opening 21 of the storage chamber 9 surrounded by the heat insulating wall 2 and the side plates 3 and 3, and the outer layer discharge port Exit 22
Is connected to the outer layer duct 7 and the inner layer discharge port 23 is connected to the inner layer duct 8. A suction port 24 is formed at the lower edge of the opening 21 and communicates with the bottom duct 13.

When the blower in the fan case 14 is operated, the air in the bottom duct 13 is blown toward the rear inner and outer layer ducts 7 and 8, and is blown up as it is in the outer layer duct 7, and at the same time, the inner layer is blown up. In the duct 8, it is blown up after exchanging heat with the cooler 16, and is blown out from the inner and outer layer discharge ports 22 and 23 at the upper edge of the opening 21 toward the suction port 24 at the lower edge.

As a result, an inner cool air curtain and an outer air curtain that protects it are formed in the opening 21 of the storage chamber 9 to prevent or suppress the invasion of outside air from the opening 21, and A part of the cool air curtain on the inner side circulates in the storage chamber 9 to cool the storage chamber 9. Then, the cold air or the like returns to the bottom duct 13 from the suction port 24 and is sucked into the blower again.

On the other hand, at the front end of the ceiling wall 2A of the heat insulating wall 2, a canopy (eave) 26 as an interior panel is attached over the entire width so as to project forward, and inside the canopy 26, inside the inner layer discharge port 23. , And fluorescent lamps 27 ... Are attached to the lower surfaces of the shelves 11 respectively. On the other hand, a handrail 28 is attached over the entire width on the upper end of the front wall 2B that borders the lower edge of the opening 21 of the heat insulating wall 2, and the lower surface front end portion 28A that is the outer surface of the handrail 28 is formed into an undercut shape. There is.

Numerals 31 and 32 are upper and lower decorative panels attached to the front surface of the front wall 2B, and numeral 33 is a bumper.
The side plate 3 has a predetermined width, and a see-through glass 29 is fitted in the central portion of the front surface thereof.

An exterior panel 36 is attached to the upper side of the canopy 26 with a space therebetween in the longitudinal direction, and the space between the exterior panel 36 and the canopy 26 is the storage section 3.
It is said to be 7. This exterior panel 36 is a canopy 26
Wider width, from the heat insulation wall 2 to the front side 3 of both side plates 3 and 3.
A, 3A has a dimension that extends to the front of the upper part, and the storage portion 3 is provided between the front end of the canopy 26 and the lower end of the exterior panel 36.
7 is formed on the side of the opening 21 and forms a gap G across the width direction.

A cushion material is appropriately attached to the canopy 26 and the exterior panel 36 facing the gap G. Further, caps 38 are attached to the left and right ends of the exterior panel 36 to close the storage portion 37.

Further, a hard synthetic resin mounting plate 41 having the same width as that of the canopy 26 is provided upright on the upper surface of the canopy 26, which is located in the housing 37. The front surface 42 of the mounting plate 41 has a stepped shape in which an upper portion 42A is located on the front side with respect to a lower portion 42B, and engaging pieces 43, 43 and 44, 44 facing each other are formed above and below the front surface, respectively. Has been done.

Then, the engaging pieces 43, 43 and 44, 4
Holders 48 and 49 to which night covers 46 and 47 are attached are respectively engaged between the four, so that both night covers 46 and 47 are housed in the housing portion 37. In this case, as shown in FIG. 7, the upper holder 48 is displaced toward the right side of the mounting plate 41 (the heat insulating wall 2), and the lower holder 49 is displaced toward the left side of the mounting plate 41. It is held between the engaging pieces 43, 43 and 44, 44 so as to be movable in the longitudinal direction (widthwise direction of the opening 21).

As a result, the night cover 46 is arranged on the right side, the night cover 47 is arranged on the left side, and the night cover 46 is positioned above and above the night cover 47. Further, each of the holders 48, 49 has vertical sides 48A, 49A engaged between the engaging pieces 43, 43 and 44, 44 and upper sides 48B, 49B projecting forward, and the holding jig 49's The upper side 49B is located above the night cover 47 and projects forward from the night cover 47.

Each of the night covers 46 and 47 allows water vapor to pass through one or both sides of a base material made of a woven fabric and has a low temperature (at least + 13 ° C. to +16 described later).
It is composed of a material laminated with a film that maintains the permeation characteristics even at a temperature (° C.), and is wound around the torsion bars 51, 51 attached to the vertical sides 48A, 49A of the holders 48, 49. It is urged in such a way that it is turned and always wound up.

The total width of the night covers 46 and 47 is larger than the width of the heat insulating wall 2 and the two side plates 3 and 3 in the embodiment, so that the night covers 46 and 47 are wound. These adjacent one ends project to the opposite side from the center C of the heat insulating wall 2 in the left-right direction, whereby the one ends of both night covers 46 and 47 overlap in the vertical direction. Further, the holders 48 and 49 are attached to the mounting plate 4 as shown in FIG.
Even if the other end portions of both night covers 46 and 47 are moved to the front surface 3A of the outer side plates 3 and 3 so as to project outward more than 1, the one end portions at least overlap in the vertical direction as shown in FIG. It is configured.

Edge members 56 made of hard resin are attached to the ends (lower edges) of the night covers 46 and 47 to stretch them left and right. The edge member 56 is shorter than the entire width of the night covers 46 and 47 as shown in FIG. 6, so that the edge members 56 are not present at both ends of the night covers 46 and 47. A handle 57 is formed at the center of the edge member 56. The handle 57 has a grip portion 58 protruding forward.
And a hook portion 59 protruding rearward, and a magnet 61 is attached to the rear surface of the hook portion 59.

The tips of the night covers 46 and 47 are pulled out from the storage portion 37 to the opening 21 side through the gap G between the canopy 26 and the exterior panel 36, and their edge members 56 and 56 are shown in FIG. Opening 2 outside the storage 37
Face 1 side. By this, both night covers 46, 47
Will be pulled out from substantially the same position, but the holder 4
The upper side 49B of the night cover 9 projects forward of the night cover 47, and the one end of the night cover 46 is
Since it descends through the front side of B, at least at the adjacent one end of each night cover 46, 47, the night cover 46 is separated from the night cover 47 forward as it goes upward.

When the open showcase 1 is shipped with the heat insulating wall 2, the side plates 3 and 3 and the exterior panel 36 separated in the above structure, the holders 48 and 49 are provided with the night covers 46 and 47, respectively. And move it inward so that the overlapping dimensions of are enlarged (Fig. 7). Therefore, it is possible to prevent the width dimension of the heat insulating wall 2 from being enlarged by the holders 48 and 49.

Then, at the installation site such as a store, first, the side plates 3 are attached to both sides of the heat insulating wall 2. next,
By moving the holders 48 and 49 outwardly and projecting them to the left and right beyond the mounting plate 41 as shown in FIG.
The other ends of 6, 47 are moved to the front surface 3A of the outer side plates 3, 3. Even in this state, the adjacent one ends of the night covers 46 and 47 overlap at least in the vertical direction as described above. Then, as described above, the edge members 56, 56
The outer panel 36 with the heat insulating wall 2
, And close the left and right with caps 38, 38.

With this structure, when the store is closed, the grips 58 of the edge members 56, 56 are used to hold both night covers 46,
47 is pulled out, and each hook portion 59 is fitted to the lower surface front end portion 28A of the handrail 28. In this case, the hook 5
Since the magnet 61 of 9 is attracted to the handrail 28, the engagement of the hook portion 59 is stably maintained. Further, the handrail 28 extends over substantially the entire left and right width of the heat insulating wall 2, and the hook portion 59 can be fitted anywhere on the front end portion 28A of the handrail 28, so that the night covers 46 and 47 are moved in the width direction. However, there is no problem in fitting the hook portion 59.

Particularly in this state, the night covers 46 and 47 are
The tip of the is on the outside of the upper surface of the handrail 28 (outer surface).
Since it will be in close contact with the night cover 46, 47
The gap between the handrail 28 and the handrail 28 is closed. Therefore, leakage of cold air from between the handrail 28 and the night covers 46 and 47 is prevented.

As described above, the night covers 46, 4
Since the adjacent one ends of 7 overlap with each other in the up-down direction in the wound state, the one ends of the night covers 46 and 47 in the pulled-out state overlap each other (the night cover 46 is on the front side) and the other end. Is located on the front surfaces 3A, 3A of the side plates 3, 3 so as to project outward from the opening 21. Therefore, between the night covers 46 and 47 and the night cover 4
6, or the gap between 47 and the side plates 3, 3 is closed,
Leakage of cold air from the opening 21 is prevented.

Therefore, the operating efficiency of the open showcase 1 is greatly improved, energy is saved, and a special windshield plate as in the past is not required, so that the number of parts and the manufacturing cost can be reduced. it can. Since the holders 48 and 49 are movable in the width direction of the opening 21, the overlapping size of the night covers 46 and 47 is arbitrarily adjusted according to the installation state of the open showcase 1 to prevent cold air leakage. It may be adjusted to the optimum state.

Especially, the night covers 46 and 47 have a gap G.
Since it is pulled out together from each night cover 46,
The overlapping one ends of 47 are in close contact with each other. here,
Since the edge members 56 do not exist at both ends of the night covers 46 and 47, the edge members 56 and 56 adhere to the overlapping portions of the night covers 46 and 47 and the front surface 3A of the side plate 3.
It does not interfere with the close contact with. Further, since the night covers 46 and 47 are pushed toward the storage chamber 9 side by the outside air pressure by the air curtain descending inside the night covers 46 and 47, the cold air leakage prevention effect is further improved as a whole.

Here, although the surfaces of the night covers 46 and 47 are lowered to a temperature of + 13 ° C. to + 16 ° C. by the air curtain (the temperature in the storage chamber 9 is 0 ° C. to + 5 ° C., the outside air temperature is +2).
At 5 ° C, the surface temperature of the night covers 46, 47 is + 13 ° C ~
Since the night covers 46 and 47 allow water vapor to permeate even at such a low temperature, for example, Japanese Patent Publication No.
Condensation on the inner surfaces of the night covers 46 and 47 is prevented without forming a hole as disclosed in JP-A-2-25586. Therefore, the leakage of cold air from the holes can be eliminated.

Further, since the dew condensation on the night covers 46 and 47 is prevented, the handrail 2 as described above.
Even if the night covers 46 and 47 are covered up to the outside of 8, the surroundings of the open showcase 1 are not contaminated by dew condensation.

Due to the effect of preventing cold air leakage as described above, in the embodiment, the power consumption is about 5 as compared with the conventional general open showcase with a night cover (100%).
It was reduced to 5%.

On the other hand, as described above, in the storage portion 37, the night cover 46 is separated from the night cover 47 toward the front as it goes upward at least at one end of the night covers 46, 47 adjacent to each other. The covers 46 and 47 do not interfere with each other, and the operability of pulling out and winding the night covers 46 and 47 is improved. Furthermore, each night cover 46, 47 is a storage unit 3.
Since it is installed inside 7, the appearance is also improved.

Next, FIG. 9 shows a plan view when two open showcases 1, 1 are connected and installed.
In this embodiment, the night covers 46 and 47 are upside down from those in FIGS. 1 to 8. In this case, the side plates 3 of the two open showcases 1 and 1 that are adjacent to each other are removed, and the heat insulating walls 2 and 2 are joined to each other via a sealing material. A small clearance 63 is formed in the space.

However, as described above, with the adjacent one ends of the night covers 46 and 47 being overlapped with each other, the other end of the night covers 46 and 47 is projected outward from the opening 21 so that the left open showcase 1 is closed. The right edge of the night cover 46 and the night cover 47 of the open showcase 1 on the right side
You can overlap the left edge of. Therefore, the gap 63 between the night covers 46 and 47 of each open showcase 1 and 1 and between the heat insulating walls 2 and 2 is closed, and the openings 21 and 2 are formed.
Leakage of cold air from 1 is prevented.

Next, FIG. 10 shows an embodiment of a so-called flat open showcase 70. In this case, the open showcase 70 is composed of a heat insulating wall 71 having an approximately U-shaped cross section that opens upward, and side plates (not shown) attached to both sides of the heat insulating wall 71. U-shaped partition plates 72 and 73 are attached to the inside of the heat insulating wall 71 at intervals, and a duct 74 is provided between the heat insulating wall 71 and each of the partition plates 72 and 73. The inside of 73 is defined as storage chambers 76 and 77.

In the duct 74, a blower (not shown) and a cooler included in the refrigerating apparatus are arranged. Each partition 7
At the upper ends of the adjacent sides of 2, 73, upper openings 78, 7 of storage chambers 76, 77 surrounded by a heat insulating wall 71 and both side plates.
Discharge ports 81 and 82 are formed at positions 9 and directed to the left and right, and the discharge ports 81 and 82 communicate with the duct 74. Further, suction ports 83 and 84 are formed at the left and right outer edges of the openings 78 and 79, respectively, and communicate with the duct 74.

When the blower is operated, the cool air in the duct 74 is blown out from the discharge ports 81, 82 toward the suction ports 83, 84 on both sides. As a result, cold air curtains are formed in the openings 78, 79 of the storage chambers 76, 77 to prevent or suppress the invasion of outside air from the openings 78, 79, and a part of the cool air curtains is stored in the storage chambers. It circulates in 76 and 77 and is cooled. Then, these cold air is returned to the duct 74 through the suction ports 83 and 84, and is sucked into the blower again.

On the other hand, inside panels 86 and 87 are attached over the respective widths above the respective discharge ports 81 and 82, and an exterior panel 88 is provided above both inside panels 86 and 87 with a space therebetween. Mounted in the longitudinal direction, the space between the exterior panel 88 and the interior panels 86, 87 is the storage section 8.
It is supposed to be 9. This exterior panel 88 is the interior panel 8
The width is wider than the widths of 6 and 87, and the dimension extends from the heat insulating wall 71 to the upper surfaces of both side plates, and the opening of the storage portion 89 is provided between the outer ends of the interior panels 86 and 87 and the outer panels 88. A gap G extending across the width is formed on the side of the portions 78 and 79.

Further, hard synthetic resin mounting plates 91 having the same width as that of the interior panels 86, 87 are mounted on the upper surfaces of the interior panels 86, 87, respectively, and are located in the storage section 89. Each mounting plate 91 has a stepped shape in which the inner portion 92A on the side separated from the gap G is positioned above the outer portion 92B on the gap G side, and the upper surface thereof has engaging pieces similar to those described above (see FIG. (Not shown), respectively.

Then, the holding member 4 in which the night covers 46 and 47 similar to those described above are attached between the engaging pieces, respectively.
8, 49 are engaged, so that both night covers 4
6, 47 are stored in the storage portion 89. In this case as well, similarly, adjacent one ends of the respective night covers 46 are arranged so as to be laterally displaced so as to overlap in the horizontal direction, and the other ends are attached so as to extend to the side plate upper surface not shown. Therefore, when the night covers 46 and 47 are pulled out, the one ends of the night covers 46 and 47 overlap each other and the other ends are located on the upper surface of the side plate, so that the openings 78,
The gap 79 is closed as described above.

In each of the above embodiments, the case where two or four night covers are attached to the opening of the open showcase has been described. However, the present invention is not limited to this, and the opening may be formed by three or more night covers. You may wear. Further, the invention of claim 8 is not limited to this, and 1
The opening may be covered with a sheet of night cover, and both ends thereof may be projected outward from the opening.

[0072]

As described above in detail, according to the invention of claim 1, one end portions of the night covers, which are adjacent to each other, overlap each other in the pulled-out state, and the other end portion projects outward from the opening. Therefore, in addition to eliminating the gap between the one end of each night cover, the other end also extends outward from the opening, and side plates and other open showcases located on both sides of the opening. It becomes possible to effectively prevent or suppress the leakage of cool air from the opening by closing the gap between them.

Therefore, it is possible to greatly improve the operating efficiency and contribute to energy saving, and it is also possible to reduce the number of parts and the manufacturing cost because no special windshield plate is required. .

According to the second aspect of the present invention, since the one ends of the night covers adjacent to each other overlap each other in the pulled-out state, and the other ends project to the side plates. In addition to eliminating the gap in
Even at the other end, the gap with the side plate can be closed to effectively prevent or suppress the leakage of cool air from the opening.

Therefore, it is possible to greatly improve the operation efficiency and contribute to energy saving, and it is also possible to reduce the number of parts and the manufacturing cost because no special windshield plate is required. .

According to the third aspect of the present invention, the one ends of the night covers adjacent to each other overlap each other in the pulled-out state, and the other end of the night cover projects to the other heat insulating wall connected to each other. In addition to eliminating the gap between one end of the night cover, closing the gap between the other end of the open showcase and the heat insulation wall of the other open showcase at the other end, the cold air from the opening of each open showcase The leakage of water can be effectively prevented or suppressed.

Therefore, even when the heat insulating walls of a plurality of open showcases are connected to each other, the operating efficiency can be greatly improved to contribute to energy saving, and a special windshield or the like is not necessary. And the manufacturing cost can be reduced.

According to the invention of claim 4, in addition to the above inventions, the mounting position of each night cover can be moved in the width direction of the opening. It is possible to make an arbitrary adjustment according to the installation state of the case, and to adjust the state to the optimum state for preventing cold air leakage.

Further, for example, at the time of shipping, the overlapping size is increased and each night cover is moved and placed inward, and is moved outward at the installation site of the open showcase,
Since it can be overlapped with the side plates and night covers of other open showcases, it will not hinder the transportation and installation work of the product.

Further, according to the invention of claim 5, in addition to the invention of claim 1 or claim 2 or claim 3, between the exterior panel attached to the opening and the interior panel provided inside thereof. Since the storage portion is configured and the night covers are attached to the storage portion, the night covers can be hidden to improve the appearance.

In particular, according to the invention of claim 6, a gap is formed on the opening side of the accommodating portion in the width direction of the opening, and each night cover is pulled out from this gap, so that it is pulled out. The overlapping one ends of the night covers are in close contact with each other, and the effect of preventing cold air leakage is further improved.

Further, according to the invention of claim 7, in addition to this, since means for separating one end of each overlapping night cover is provided in the storage portion, the night covers do not interfere with each other during winding. The operability of pulling out and winding the night cover is improved.

According to the invention of claim 8, since the night cover is extended outward from the opening in the pulled-out state, the night cover is provided between the side plates and other open showcases located on both sides of the opening. It becomes possible to effectively prevent or suppress the leakage of cool air from the opening by closing the gap. Therefore, especially when covering the opening with a single night cover, it is possible to greatly improve the operating efficiency and contribute to energy saving, as well as the need for a special windshield plate, etc. The manufacturing cost can be reduced.

According to the invention of claim 9, in addition to the invention of claim 1 or claim 2, or claim 3 or claim 8, the night cover is permeable to water vapor and at a low temperature. Also, since it is made of a material that maintains the permeation characteristics, it is possible to prevent dew condensation on the night cover without forming a special hole or the like. Therefore, the leakage of cold air from the holes can be eliminated and the operation efficiency can be further improved.

According to the invention of claim 10, in addition to the above, since the hook portion fitted to the outer surface of the handrail of the opening is provided at the tip of the night cover, the gap of the opening at the tip of the night cover is also closed. Thus, it becomes possible to more effectively prevent the leakage of cold air from the opening. In particular, since the dew condensation on the night cover is also prevented as described above, even when the night cover covers the outside of the handrail, the dew condensation does not stain the surroundings of the open showcase.

According to the invention of claim 11, in addition to the invention of claim 1, claim 2, claim 3, or claim 8, the edge member for stretching the night cover is shorter than the entire width of the night cover. Therefore, the edge member does not interfere with the close contact of the overlapping portions of the night covers with each other and the close contact with the side plate and the front surface of the heat insulating wall. Therefore, it becomes possible to more effectively prevent the cool air from leaking from the opening.

According to the twelfth aspect of the invention, the night cover that covers the opening is made of a material that allows water vapor to pass therethrough and maintains the permeation characteristics even at low temperatures. Since the hook portion provided on the outer surface of the handrail is provided, it is possible to prevent dew condensation on the night cover without forming a special hole or the like. Therefore, it is possible to improve the operation efficiency by eliminating the leakage of cold air from the holes. In addition, since the gap of the opening at the tip of the night cover can be closed, it is possible to effectively prevent the cool air from leaking from the opening. In particular, since the dew condensation on the night cover is also prevented as described above, even when the night cover covers the outside of the handrail, the dew condensation does not stain the surroundings of the open showcase.

[Brief description of drawings]

FIG. 1 is a front view of an open showcase according to an embodiment of the present invention.

FIG. 2 is a vertical sectional side view of the open showcase according to the embodiment of the present invention.

FIG. 3 is an enlarged vertical side view of the upper end of the opening of the open showcase of the embodiment of the present invention.

FIG. 4 is a side view of the upper portion of the opening of the open showcase according to the embodiment of the present invention.

FIG. 5 is a vertical cross-sectional side view of the lower portion of the opening of the open showcase of the embodiment of the present invention.

FIG. 6 is a perspective view of two night covers in a pulled-out state.

FIG. 7 is a perspective view of a mounting plate.

FIG. 8 is a perspective view of a mounting plate with a holder moved.

FIG. 9 is a plan view showing a state in which open showcases are connected.

FIG. 10 is a vertical sectional side view of a flat open showcase showing another embodiment of the present invention.

11 is an enlarged vertical side view of a storage portion of the flat open showcase shown in FIG.

[Explanation of symbols]

 1, 70 Open showcase 2, 71 Insulation wall 3 Side plate 21, 78, 79 Opening 26 Canopy (interior panel) 28 Handrail 36, 88 Exterior panel 37, 89 Storage 46, 47 Night cover 41, 91 Mounting plate 48 , 49 Holder 56 Edge member 59 Hook part 86, 87 Interior panel G Gap

Claims (12)

[Claims] 1. An open showcase comprising at least two night covers covering an opening, wherein each of the night covers is overlapped at one end thereof adjacent to each other in a pulled-out state, and the other end thereof is at the other end. An open showcase that is characterized by overhanging from the opening. 2. An open showcase comprising a heat insulating wall, side plates attached to both sides of the heat insulating wall, and at least two night covers covering an opening surrounded by the heat insulating wall and the side plates. In the open showcase, one end of each of the night covers, which are adjacent to each other in the pulled-out state, overlap each other, and the other end of the night cover extends to the side plate. 3. An open showcase comprising at least two night covers covering the openings of a heat insulating wall, wherein a plurality of the heat insulating walls can be connected to each other, the night covers being mutually pulled out. An open showcase characterized in that one end adjacent to the other overlaps and the other end projects to another heat insulating wall connected. 4. The mounting position of each night cover is movable in the width direction of the opening.
Alternatively, the open showcase according to claim 2 or claim 3. 5. A storage unit is formed between an exterior panel attached to the opening and an interior panel provided inside the exterior panel, and each night cover is attached to the storage unit. The open showcase of claim 2 or claim 3. 6. The open show according to claim 5, wherein a gap formed across the width of the opening is provided on the opening side of the storage section, and each night cover is pulled out from the gap. Case. 7. The open showcase according to claim 6, wherein a means for separating one end of each of the overlapping night covers is provided in the storage section. 8. An open showcase provided with a night cover covering an opening, wherein the night cover extends outwardly from the opening in a pulled-out state. 9. The night cover is made of a material which allows water vapor to permeate therethrough and maintains the permeation characteristic even at a low temperature. 3, or the open showcase of claim 8. 10. The open showcase according to claim 9, wherein a handrail is provided in the opening, and a hook portion fitted to the outer surface of the handrail is provided at the tip of the night cover. 11. An edge member for tensioning a night cover is provided at the tip of the night cover, and the edge member is shorter than the entire width of the night cover, according to claim 1 or claim 2 or claim 3. Alternatively, the open showcase of claim 8. 12. An open showcase having a night cover covering an opening, wherein a handrail is attached to the opening, and the night cover allows water vapor to permeate and maintains the permeation characteristics even at low temperatures. An open showcase, which is made of the same material as described above, and is provided with a hook portion fitted to the outer surface of the handrail at the tip of the night cover.