JPH11257830A - Open showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance cooling performance of articles on each shelf unit by improving the chill delivery system in open showcase. SOLUTION: In the open showcase 1, a storage chamber 9 and a duct 11 are formed by partitioning the inside of a heat insulating wall 6 opening forward by means of a baffle plate 8. Chill cooled by a chiller disposed in the duct 11 is fed into the storage chamber 9 by means of a fan and a plurality of stages of shelf unit 2 are stretched in the storage chamber 9 such that the vertical fixing position can be altered. The open showcase 1 further comprises a chill passage 31 formed in each shelf unit 2, an air outlet 32 made in the lower surface at the forward part of the shelf unit 2 to communicate with the forward part of the chill passage 31, a plurality of through holes 33 made vertically through the battle plate 8, and a plate 37 disposed such that the vertical fixing position can be altered relative to the baffle plate 8 and opens the through holes 33 corresponding to the rear part of the chill passage 31 to introduce chill in the duct 11 into the passage 31 while closing all other through holes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage room formed in a heat insulating wall having an opening on the front side, a plurality of shelving units being erected so that a vertical mounting position can be changed, and cool air supplied from a duct into the storage room. It's about open showcases.

[0002]

2. Description of the Related Art Conventionally, an open showcase of this kind has been disclosed in, for example, Japanese Patent Application Laid-Open No. 9-96485, in which a heat insulating wall having a substantially U-shaped cross section opened to the front is partitioned by a partition plate. Is a storage room on the front side and a duct on the rear side. A plurality of shelves for displaying products are erected in the storage room, and a cooler and a blower are installed in the duct, and cool air cooled by the cooler is blown by the blower at the upper edge of the opening. It is discharged from the cool air discharge port, and is sucked in from the cool air suction port at the lower edge of the opening.

[0003] Thus, while forming a cool air curtain at the opening, a part of the air is circulated into the storage room to cool the goods on each shelf.

[0004]

However, in the case of an open showcase having a relatively short height as disclosed in Japanese Patent Application Laid-Open No. 9-65958, for example, the heat insulating wall must be provided in consideration of the visibility in the storage room. The top wall ends relatively on the far side. Therefore, since the cool air discharge port is located at a position deeper than the front part of the lower shelf, there is a problem that it is difficult for the cool air to reach the lower shelf and the air curtain is easily disturbed.

The present invention has been made to solve the above-mentioned conventional technical problem, and an object of the present invention is to improve a cooling air discharge system in an open showcase to improve a cooling performance of a product on each shelf device. Aim.

[0006]

In the open showcase of the present invention, a storage room and a duct are formed by partitioning the inside of a heat insulating wall opened at the front with a partition plate, and a cooler disposed in the duct is used. Cooled air is supplied into the storage room by a blower, and a plurality of shelves are installed in the storage room so that the vertical mounting position can be changed, and formed in each of the shelves. A cool air passage, an outlet formed on the lower surface of the front part of the shelf device and communicating with the front part of the cool air passage;
A plurality of through holes are formed vertically in the partition plate, and the mounting position can be changed vertically with respect to the partition plate, and the through holes corresponding to the rear part of the cool air passage are opened to allow the cool air in the duct to pass through the cool air passage. And a closing plate for closing through holes other than the through holes.

According to the present invention, the storage room and the duct are formed by partitioning the inside of the heat insulating wall opened to the front with the partition plate, and the cool air cooled by the cooler disposed in the duct is blown by the blower. In an open showcase in which a plurality of shelves are erected in the storage room so that the shelves can be mounted vertically, a cold air passage formed in each of the shelves and a shelf in front of the shelves are provided. Formed on the lower surface of the part,
An outlet communicating with the front part of the cold air passage, a plurality of through holes formed vertically in the partition plate, and a through hole which is provided so as to be changeable in vertical mounting position with respect to the partition plate and corresponds to a rear part of the cool air passage. To open the cold air in the duct into the cool air passage and to close the through-holes other than the through-holes.
The cool air flowing through the duct is introduced into the cool air passage in each shelf device through the through hole, and can be blown downward from the outlet on the lower surface of the front part.

[0008] With this, it is possible to supply cool air to the periphery of the product on each shelf device below the outlet while forming cool air curtains one after another in the opening, thereby remarkably increasing the cooling capacity in the storage room. Be able to improve.

In particular, since a plurality of through holes are formed vertically, the through holes correspond to the rear portion of the cool air passage even when the mounting position of the shelf device is changed up and down. Further, by changing the mounting position of the closing plate up and down, the through-holes other than the corresponding through-holes can be closed, so that the cool air can be reliably and efficiently supplied to the cool air passage. It will be able to do.

In the open showcase according to the second aspect of the present invention, the rear part of the cool air passage is expanded so that a plurality of vertically extending through holes correspond to the rear part of the cool air passage.

According to the second aspect of the present invention, in addition to the above, by extending the rear part of the cool air passage, a plurality of vertically extending through holes correspond to the rear part of the cool air passage.
A large amount of cool air is introduced from the duct into the cool air passage in each shelf device, so that the cooling capacity can be further improved.

According to a third aspect of the present invention, in the above-mentioned invention, a lower outlet is formed at a rear portion of the shelf device and communicates with a cool air passage to blow cool air to a lower surface of the shelf device.

According to the third aspect of the present invention, in addition to the above-described inventions, a lower outlet is formed at the rear of the shelf device to communicate with the cool air passage and to blow cool air to the lower surface of the shelf device. By introducing cold air into the device, the dew water which tends to be generated on the lower surface of the shelf device can be effectively eliminated or suppressed.

[0014] The open showcase of the invention according to claim 4 is attached to the front of the shelf device in each of the above inventions,
A guard for preventing the product from dropping, a holding portion formed upright at the front of the shelf device, and attached to the shelf device facing the outside of the corner of the shelf device where the holding portion is located. A plurality of folding grooves are formed in the guard, and the guard is bent in any one of the folding grooves, and the guard is bent along the outer surface of the corner portion. It is sandwiched between.

According to the fourth aspect of the present invention, in addition to the above inventions, a guard attached to a front portion of the shelf device for preventing a product from falling, and a holding portion formed upright at the front portion of the shelf device. And a holding member attached to the shelf device facing the outside of the corner of the shelf device where the holding portion is located, and a plurality of folding grooves are formed in the guard, Since it is bent in the fold groove of, and it is made to fit between the corner and the holding member in the state along the outer surface of the corner,
By changing the bending groove of the guard, the height of the guard rising from the shelf device can be changed.

Thus, there is a concern that dew condensation on the product may occur due to contact with the outside air. For example, the guard of the uppermost shelf device is made higher, and the guards of the other shelf devices are made lower to improve the ease of taking out the product. The same guard can be selected by the same guard, so that the versatility is enhanced. In particular, since the guard is prevented from bending by the holding portion of the shelf device and is maintained in the upright state, the effect of preventing the product from falling is not hindered.

According to a fifth aspect of the present invention, there is provided an open showcase according to the above invention, wherein a top plate is attached to an upper end of the heat insulating wall above the uppermost shelf device, A cool air discharge port communicating with the duct is formed, and the top plate can be freely opened and closed.

According to the fifth aspect of the present invention, in addition to the above inventions, a top plate is attached to the upper end of the heat insulating wall above the uppermost shelf device, Since the cool air discharge port communicating with the duct is formed, the cool air is discharged from the cool air discharge port onto the uppermost shelf device. And since the upper part is covered with the top plate, the goods on the uppermost shelf device can be cooled without any trouble. In particular, since the top plate is openable and closable, even if the guard is raised upright as described above, it is possible to easily take out the products on the shelf device by opening the top plate. is there.

According to a sixth aspect of the present invention, there is provided the open showcase according to the first, second, third or fourth aspect of the invention, wherein the upper end of the heat insulating wall is located above the uppermost shelf device. At the bottom of the top plate, a cool air discharge port that communicates with the duct is formed by the top plate and the upper end of the partition plate, and is linked to the opening and closing of the top plate. In addition, a damper for closing and opening the duct is provided on the upstream side of the cool air discharge port.

According to the sixth aspect of the present invention, in addition to the first, second, third or fourth aspect of the present invention, the upper end of the heat insulating wall is located above the uppermost shelf. Then, a cool air discharge port communicating with the duct is formed below the top plate, so that cool air is discharged from the cool air discharge port onto the uppermost shelf device. And since the upper part is covered with the top plate, the goods on the uppermost shelf device can be cooled without any trouble. In particular, since the top plate and the upper end of the partition plate form a cool air discharge port,
The number of parts can be reduced.

Also, since the top plate can be opened and closed freely,
Even when the guard is raised upright as described above, the commodity on the shelf device can be easily taken out by opening the top plate. And, since the damper that closes and opens the duct upstream of the cool air discharge port in conjunction with the opening and closing of the top plate is provided, even when the top plate is opened, the cool air in the duct flows out to the outside. This will prevent inconvenience.

[0022]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of an open showcase 1 of the present invention, FIG. 2 is a vertical sectional side view of the open showcase 1, FIG. 3 is an enlarged cross-sectional view of the open showcase 1 of a shelf device 2, and FIG. 1 is a vertical sectional front view of the open showcase 1 of FIG.

In each of the drawings, an open showcase 1 of the embodiment is installed in a convenience store or the like and is used for display and sale of drinks, and has a heat insulating wall 6 having a substantially U-shaped cross section that opens to the front. And transparent side plates 7, 7 attached to the left and right sides of the heat insulating wall 6.

A partition plate (interior rear) 8 is attached inside the heat insulating wall 6, and a front side thereof is a storage room 9.
A duct 11 is provided between the partition plate 8 and the heat insulating wall 6. The top wall 6A of the heat insulating wall 6 ends on the back side of the bottom wall 6B, and a cool air discharge port 12 is formed above the uppermost shelf device 2 below the front end of the top wall 6A. A cool air suction port 13 is formed on the upper front end of each of them, and communicates with the duct 11.

A cooler 14 and a blower 16 constituting a refrigeration cycle of a cooling device are installed in the duct 11, and a machine room 17 formed below the bottom wall 6 B of the heat insulating wall 6 includes:
The compressor 1 constituting a refrigeration cycle together with the cooler 14
8, a condenser 19 and a condenser blower 21 are installed.

In the storage room 9 on the front side of the partition plate 8, the shelf device 2 is provided over a plurality of upper and lower stages. Each shelf device 2 is composed of a pair of brackets 22,
, A reinforcing plate 23, a slide rail 24, a stopper 4 and the like. In this case, shelf posts 26, 26 are vertically mounted on the left and right sides of the partition plate 8, and a plurality of locking holes 27 are formed in the shelf posts 26 at predetermined intervals in the vertical direction.

The hooks 28 at the rear edges of the brackets 22 are detachably locked in locking holes 27 of a predetermined height. That is, the claws 28 of each bracket 22, 22
The upper and lower mounting positions of the shelf device 2 can be changed by changing the locking holes 27 for locking. The slide rails 24 are attached to the bracket 22 in front and rear, and the shelf 3 is attached to and held by the left and right slide rails 24, 24. The shelf 3 is supported by the slide rails 24, 24 so as to be movable back and forth with respect to the brackets 22, 22. The shelf plate 3 is made of a plate material having good thermal conductivity such as a normal steel plate, stainless steel, or aluminum plate.

The reinforcing plate 23 is provided on both brackets 2.
It is screwed between 2 and 22. Here, the reinforcing plate 23 reinforces the entire shelf device 2 so as not to bend when the shelf plate 3 is pulled out to the front of the storage room 9. The reinforcing plate 23 is opposed to the lower part of the shelf plate 3 at a predetermined interval, and a cool air passage 31 is formed therebetween.
The front end of the reinforcing plate 23 ends before the front end of the shelf 3, and an air outlet 32 is formed between these front ends, and communicates with the front part of the cold air passage 31.

On the other hand, the partition plate 8 is provided with a plurality of through holes 33... Further, the rear part of the shelf 3 is bent rearwardly high to form an inclined part 3A, and the rear part of the reinforcing plate 23 is also bent low downward to form the inclined part 23A. Thereby, the rear part of the cool air passage 31 is expanded vertically, whereby the rear part of the cool air passage 31 corresponds to three upper and lower through-holes 33. The rear end of 31 communicates with duct 11 on the downstream side of blower 16.

A plurality of lower outlets 36 are formed in the upper portion of the inclined portion 23A of the reinforcing plate 23 across the left and right. Further, at the front end of the reinforcing plate 23, a bent portion 23A bent in a U-shape is formed on the upper side, and a guard 34 is attached to the front end of the shelf plate 3. The stoppers 4 are attached to both sides of the front surface of the lower surface of the shelf 3. Each stopper 4 is engaged with a bent portion 23A of the reinforcing plate 23 so as to be freely detachable.

That is, when the shelf plate 3 is stored in the storage room 9, the stopper 4 is attached to the bent portion 2 of the reinforcing plate 23.
3A. Thereby, the shelf board 3 does not move carelessly. Then, for example, when replenishing a product on the shelf 3, the stoppers 4, 4 are removed from the bent portion 23A. In this state, if the shelf 3 is pulled out by the slide rails 24, the replenishment of commodities can be performed easily.

When the work is completed, the shelves 3 are pushed in the direction of the storage room 9, and when the shelves 3 are stored in a predetermined position in the storage room 9, the stoppers 4 automatically break the reinforcing plate 23. It is engaged with the curved portion 23A again.

On the other hand, a blocking plate 37 is provided on the surface of the partition plate 8 at the position corresponding to the rear of the shelf device 2 on the duct 11 side. The upper and lower three-stage through holes 3 are formed at the center of the closing plate 37.
An opening 38 is formed in a range where 3... On both sides of the partition plate 8, elongated holes 42, 42 are formed vertically. The long holes 42 are formed within the dimensions of the closing plate 37.

The upper and lower screws 42, 42 inserted into the long holes 42, 42 from the storage chamber 9 side and penetrating the closing plate 37, and screwed into the respective screws 42,. The closing plate 37 is attached to the partition plate 8 by a nut stopper 41. That is, by loosening the screws 42, 42, the mounting position of the closing plate 37 is
The structure can be moved up and down in the range of 42, and at this time, the closing plate 37 is prevented from falling off by the double nut stopper 41.

The opening 38 of the closing plate 37 has three upper and lower through-holes 33 corresponding to the rear end of the cold air passage 31.
(In this embodiment, the through holes 33... (In the embodiment, one by one) are closed.

Next, the cooling air circulation will be described. When the compressor 18 and the blower 16 of the cooling device are operated, the cooler 14 performs a cooling action. The cool air in the duct 11 cooled by the cooler 14 is sucked up by the blower 16 and blown upward, and is discharged into the storage chamber 9 from the cool air discharge port 12 at the uppermost part. Thus, the uppermost shelf device 2 is cooled.

A part of the cool air rising inside the duct 11 flows into the cool air passage 31 of the shelf device 2 from the upper and lower three-stage through holes 33. Then, it moves forward through the cold air passage 31 and is blown downward from the outlet 32 at the front end. At this time, a bent portion 23A is formed at the front end of the reinforcing plate 23, and since the cool air passage 31 is narrowed at this portion, the cool air blown out from the outlet 32 is straightened, and the flow velocity is increased.

The cool air discharged or blown into the storage chamber 9 finally circulates back to the duct 11 from the cool air inlet 13 (indicated by arrows in FIGS. 2 and 3).

As described above, in the present invention, the cool air rising in the duct 11 is supplied to the cool air passages 31 in each of the shelf devices 2.
, And blows out downward from the outlets 32 at the front end, so that the cool air curtains are formed one after another in the opening of the storage room 9 while the outlets 32.・ ・ Cool air can be supplied to the surroundings of the above products, and the cooling capacity in the storage room 9 can be significantly improved.

In particular, since the cool air passage 31 is formed between the shelf plate 3 and the reinforcing plate 23 of the shelf device 2, a cool air passage is formed in the shelf device 2 by utilizing a so-called movable shelf and the structure of the reinforcing plate 23. Can be formed. As a result, the product delivery work is improved, and
It is possible to improve the cooling effect on each shelf 3 while improving the strength when the shelf 3 is pulled out by the reinforcing plate 23.

Further, since the shelf 3 is made of a material having good thermal conductivity as described above, the products on the shelf 3 are directly transferred from the shelf 3 cooled by the cool air flowing through the cool air passage 31. Also cooled by.

Furthermore, since the rear part of the cool air passage 31 is expanded and a plurality of vertically extending through holes 33... Correspond to the rear part of the cool air passage 31, a large amount of cold air flows from the duct 11 into each shelf device 2. The cooling air can be further introduced into the cold air passage 31 to further improve the cooling capacity.

A part of the cool air flowing into the cool air passage 31 is blown out from the lower outlet 36 toward the lower surface of the reinforcing plate 23. This makes it possible to effectively eliminate or suppress the dew condensation water that tends to be generated on the lower surface of the reinforcing plate 23 due to cooling from the cool air flowing in the cool air passage 31.

Next, the claws 28, 2 of the brackets 22,
When the mounting position of the shelf device 2 is changed up and down by changing the locking holes 27... Are formed in a plurality of stages, so that they can cope with the cold air passage 31 without any trouble. In this case, the screws 39 are loosened and the closing plate 37 is moved upward, and the opening 38 is made to correspond to the three-stage through-holes 33. The upper and lower through holes 33 are closed. After that, screw 39 ...
Is tightened again to determine the vertical position of the closing plate 37.

Thus, even when the mounting position of the shelf device 2 is changed up and down, the cool air can be supplied to the cool air passage 31 reliably and efficiently.

FIG. 5 is an enlarged view of the front end of the shelf device 2 according to another embodiment of the present invention. In this case, the front end of the shelf plate 3 of the shelf device 2 is bent upward, and a holding portion 3A is formed upright there. A holding member is provided at a position facing the outside of the corner 3B of the holding portion 3A. 43 are detachably attached to the shelf 3 at intervals. A guard 44 in this case is attached between the corner 3B and the pressing member 43, and is provided upright at the front of the shelf board 3. The other structure is the same as described above.

The guard 44 is attached to the front part of the shelf device 2 to prevent the commodity G from falling, and is made of a hard synthetic resin plate. Are formed in a triangular cross-section across the left and right at predetermined vertical intervals. By bending the thin portion at the bottom of the folding groove 46 as a hinge, the guard 44 is configured to be able to be bent at a substantially right angle (the whole has an L-shaped cross section).

When the guard 44 is attached, the holding member 43 is once removed, and the holding member 43 is bent along one of the folding grooves 46 along the outer surface of the corner 3B of the shelf 3 as described above. The member 43 is attached and held from the outside. In this state, as shown in FIG. 5, the area where the fold groove 46 of the guard 44 exists is held by the holding portion 3A from the rear (the fold groove 46 is formed in advance in the range that can be held by the holding portion 3A), It will not bend.

Next, a method of using the guard 44 will be described. First, in FIG. 1 and FIG.
Ends on the back side of the bottom wall 6B, so that the merchandise G easily comes into contact with the outside air with respect to the uppermost shelf device 2. Therefore, dew condensation easily occurs on the product G, and the dew condensation water causes a problem such that the label L comes off, for example.

Therefore, the uppermost shelf device 2 is bent at the lowermost folding groove 46 of the guard 44. In this case, the guard 44 stands up above the shelf 3 and the label L
, The contact of the product G with the outside air can be suppressed, and the inconvenience as described above can be eliminated or suppressed.

It should be noted that the high guard 44 hinders the delivery of the product G. Therefore, it is preferable to use the shelf device 2 at a low position by bending the guard device 44 at the upper folding groove 46 so that the height of the guard 44 rising from the shelf plate 3 is reduced. That is, according to the guard 44 in this case, such selection can be performed by one guard, so that the versatility is enhanced.

FIG. 6 is a top sectional view of an open showcase 1 according to another embodiment of the present invention. In this figure, the same reference numerals as those in FIGS. In this case, a transparent top plate 47 (made of hard resin or glass) is mounted horizontally on the front side of the top wall 6A of the heat insulating wall 6 so as to extend forward. The top plate 47 is rotatably supported by the top wall 6A by a hinge 48 at the rear end. By lifting the front end located above the front part of the uppermost shelf device 2, the top plate 47 is moved upward as shown in FIG. Can be opened and closed as shown by a broken line in FIG.

With such a structure, cool air is discharged from the cool air discharge port 12 onto the uppermost shelf device 2, and the upper portion is always covered with the top plate 47. Therefore,
Products on the uppermost shelf device 2 can be cooled without any trouble. In particular, since the top plate 47 is freely openable and closable, the shelf device 2 can be easily opened by opening the top plate 47.
The above product can be taken out, which is particularly suitable when the guard is raised upright as described above.

FIG. 7 is a top sectional view of an open showcase 1 according to still another embodiment of the present invention. In this case, the top wall 6A of the heat insulating wall 6 is deleted, and a transparent top plate 51 (made of hard resin or glass) is used instead.
Is attached. The top plate 51 extends horizontally from the upper end of the heat insulating wall 6 and is mounted horizontally. The top plate 51 is rotatably supported by the heat insulating wall 6 by a hinge 52 at the rear end. By lifting the front end located above the front part, it can be opened and closed as shown by the broken line in FIG.

The upper wall 8A, which is the upper end of the partition plate 8, extends horizontally at a predetermined interval below the horizontal top plate 51 at a predetermined interval. The cold air discharge port 12 communicating with the duct 11 is formed between the cold air discharge port 12 and the front end of the cold air discharge port. The upper wall 8A is also made of a transparent hard synthetic resin or glass.

Further, a damper 54 is connected to the top plate 51 via a connecting member 53. The damper 54 is rotatably attached to the upper surface of the partition plate 8 on the duct 11 side via a hinge 56. When the top plate 51 is in a horizontal state, the damper 54 follows the partition plate 8 and the top plate 51 When opened, it pivots and projects toward the duct 11 (shown by a broken line in FIG. 7), and closes the duct 11 on the upstream side of the cool air discharge port 12.

With such a configuration, cool air is discharged from the cool air discharge port 12 onto the uppermost shelf device 2, and the top plate 51
, The products on the uppermost shelf device 2 can be cooled without any trouble. In particular, since the cool air discharge port 12 is formed by the top plate 51 and the upper wall 8A of the upper end of the partition plate 51, the number of components can be reduced.

Further, since the top plate 51 is openable and closable, even when the guard is raised upright as described above, the commodity on the shelf device 2 can be easily taken out by opening the top plate 51. become able to. And the damper 54
Closes / opens the duct 11 on the upstream side of the cool air discharge port 12 in conjunction with the opening / closing of the top plate 51, so that even when the top plate 51 is opened, the cool air in the duct 11 flows out to the outside. Inconvenience can be prevented.

FIG. 8 is a top sectional view of an open showcase 1 according to still another embodiment of the present invention. In each drawing, the same reference numerals as those in FIGS. 1 to 4 have the same or similar functions. In this case, the shelf device 2 at the uppermost stage has a configuration in which a cool air passage 31 is formed between a shelf plate 3 made of a heat insulating plate and a reinforcing plate 23 attached at an interval below the shelf plate 3.

A wind direction plate 61 projecting toward the duct 11 is attached above the through hole 33 located at the rear end of the cool air passage 31. The wind direction plate 61 extends rearward from the partition plate 8 and is bent obliquely downward.
The cool air rising inside is drawn into the through holes 33.

Further, the guard 34 erected at the front end of the shelf device 2 is provided relatively high. According to such a configuration,
The amount of cool air flowing toward the cool air discharge port 12 can be adjusted by the projecting dimension of the wind direction plate 61, and the guard 34 rises high to cover the space in front of the uppermost shelf device 2, so that the uppermost shelf device The inside of the upper storage room 9 can be used at a temperature different from that of the lower storage room 9.

For example, as shown in FIGS. 9 and 10, a handle 62 is connected to the front portion of the wind direction plate 61, and these are held on rails 63 attached to the rear portions on both lower sides of the shelf plate 3 so as to be movable back and forth. By moving the wind direction plate 61 back and forth with the handle 62, the amount of protrusion into the duct 11 can be adjusted. 61A is a sealing material attached to the tip of the wind direction plate 61.

That is, with this configuration, the handle 62 is used to
1 is moved so that the opening amount can be adjusted from a state in which the duct 11 is completely closed, so that the temperature of the storage room 9 on the uppermost shelf device 2 can be changed from a so-called non-cooled (uncooled state) to a desired temperature. It is possible to adjust up to the cooling temperature zone. Thereby, the uppermost part in the storage room 9 is set to a different temperature zone from the lower part, so that it can correspond to different displayed products, and the usability can be improved.

[0064]

As described above in detail, according to the present invention, a storage room and a duct are formed by partitioning the inside of a heat insulating wall opened to the front with a partition plate, and the cooling is performed by a cooler disposed in the duct. The supplied cool air is supplied to the storage room by a blower, and a plurality of shelves are provided in the storage room so that the cool air formed in each of the shelves in an open showcase having a vertically movable mounting position. A passage, an outlet formed on the lower surface of the front part of the shelf device and communicating with the front part of the cold air passage;
A plurality of through holes are formed vertically in the partition plate, and the mounting position can be changed vertically with respect to the partition plate, and the through holes corresponding to the rear part of the cool air passage are opened to allow the cool air in the duct to pass through the cool air passage. And a closing plate that closes a through-hole other than the through-hole, so that the cool air flowing through the duct is introduced into the cool-air passage in each shelf device from the through-hole, and from the outlet on the lower surface of the front part. Each can be blown downward.

With this arrangement, it is possible to supply the cool air around the products on the respective shelves below the outlet while forming the cool air curtains one after another at the opening, thereby remarkably increasing the cooling capacity in the storage room. Be able to improve.

In particular, since a plurality of through-holes are formed vertically, the through-holes correspond to the rear portion of the cool air passage even when the mounting position of the shelf device is changed up and down. Further, by changing the mounting position of the closing plate up and down, the through-holes other than the corresponding through-holes can be closed, so that the cool air can be reliably and efficiently supplied to the cool air passage. It will be able to do.

According to the second aspect of the present invention, in addition to the above, by extending the rear part of the cool air passage, a plurality of vertically extending through holes correspond to the rear part of the cool air passage.
A large amount of cool air is introduced from the duct into the cool air passage in each shelf device, so that the cooling capacity can be further improved.

According to the third aspect of the present invention, in addition to the above-mentioned inventions, a lower outlet is formed at the rear of the shelf to communicate with the cool air passage and to blow cool air to the lower surface of the shelf. By introducing cold air into the device, the dew water which tends to be generated on the lower surface of the shelf device can be effectively eliminated or suppressed.

According to the fourth aspect of the present invention, in addition to the above-mentioned inventions, a guard attached to the front of the shelf device for preventing the product from falling, and a holding portion formed upright at the front of the shelf device. And a holding member attached to the shelf device facing the outside of the corner of the shelf device where the holding portion is located, and a plurality of folding grooves are formed in the guard, Since it is bent in the fold groove of, and it is made to fit between the corner and the holding member in the state along the outer surface of the corner,
By changing the bending groove of the guard, the height of the guard rising from the shelf device can be changed.

As a result, there is a concern that dew condensation may occur on the product due to contact with the outside air. For example, the guard of the uppermost shelf device is increased, and the guards of the other shelf devices are lowered to improve the ease of taking out the product. The same guard can be selected by the same guard, so that the versatility is enhanced. In particular, since the guard is prevented from bending by the holding portion of the shelf device and is maintained in the upright state, the effect of preventing the product from falling is not hindered.

According to the fifth aspect of the present invention, in addition to the above-mentioned inventions, a top plate is attached to the upper end of the heat insulating wall above the uppermost shelf device, Since the cool air discharge port communicating with the duct is formed, the cool air is discharged from the cool air discharge port onto the uppermost shelf device. And since the upper part is covered with the top plate, the goods on the uppermost shelf device can be cooled without any trouble. In particular, since the top plate is openable and closable, even if the guard is raised upright as described above, it is possible to easily take out the products on the shelf device by opening the top plate. is there.

According to the sixth aspect of the present invention, in addition to the first, second, third or fourth aspect of the present invention, the upper end of the heat insulating wall is located above the uppermost shelf. Then, a cool air discharge port communicating with the duct is formed below the top plate, so that cool air is discharged from the cool air discharge port onto the uppermost shelf device. And since the upper part is covered with the top plate, the goods on the uppermost shelf device can be cooled without any trouble. In particular, since the top plate and the upper end of the partition plate form a cool air discharge port,
The number of parts can be reduced.

Since the top plate can be opened and closed freely,
Even when the guard is raised upright as described above, the commodity on the shelf device can be easily taken out by opening the top plate. And, since the damper that closes and opens the duct upstream of the cool air discharge port in conjunction with the opening and closing of the top plate is provided, even when the top plate is opened, the cool air in the duct flows out to the outside. This will prevent inconvenience.

[Brief description of the drawings]

FIG. 1 is a perspective view of an open showcase of the present invention.

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

FIG. 3 is an enlarged cross-sectional view of the open showcase of the present invention in a shelf device portion.

FIG. 4 is a vertical sectional front view of the open showcase of the present invention in a shelf device portion.

FIG. 5 is an enlarged sectional view of a guard portion at a front end of a shelf device of an open showcase according to another embodiment of the present invention.

FIG. 6 is a vertical sectional side view of an upper part of an open showcase according to still another embodiment of the present invention.

FIG. 7 is a vertical sectional side view of an upper part of an open showcase according to still another embodiment of the present invention.

FIG. 8 is a vertical sectional side view of an upper part of an open showcase according to still another embodiment of the present invention.

FIG. 9 is a vertical sectional side view of an upper part of an open showcase according to still another embodiment of the present invention.

FIG. 10 is an enlarged vertical sectional front view of a side portion of the uppermost shelf device 2 of the open showcase of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Open showcase 2 Shelf device 3 Shelf 3A Holder 6 Insulation wall 8 Partition plate 9 Storage room 11 Duct 14 Cooler 16 Blower 22 Bracket 23 Reinforcement plate 26 Shelf support 27 Lock hole 31 Cold air passage 32 Outlet 33 Through hole 36 lower outlet 37 closing plate 38 opening 39 screw 42 long hole 43 holding member 44 guard 46 folding groove 47, 51 top plate 54 damper

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shogo Maeda 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Toshiaki Kubota 2-5-2 Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. (72) Inventor Masahiro Sakai 2-5-5 Keihan Hondori, Moriguchi City, Osaka Prefecture (72) Inventor Taro Ogawa 2 Keihanhondori, Moriguchi City, Osaka Prefecture 5-5-5 Sanyo Electric Co., Ltd. (72) Inventor Toshiaki Miyatake 2-5-5 Sanyo Electric Co., Ltd., Sanyo Electric Co., Ltd. (72) Inventor Masaki Yano Keihanmoto, Moriguchi, Osaka 2-5-5, Sanyo Electric Co., Ltd. (72) Inventor Shigeru Arai 2-5-5, Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (6)

[Claims] 1. A storage room and a duct are formed by partitioning the inside of a heat insulating wall opened to the front with a partition plate, and cool air cooled by a cooler disposed in the duct is blown into the storage room by a blower. In the open showcase, in which a plurality of shelves are installed in the storage room so as to be capable of changing the vertical mounting position, a cold air passage formed in each of the shelves, and a front part of the shelves. An outlet formed on the lower surface and communicating with the front part of the cold air passage, a plurality of through-holes formed vertically in the partition plate, and provided in a manner capable of changing the vertical mounting position with respect to the partition plate, A closing plate that opens a through hole corresponding to a rear portion of the cool air passage to introduce cool air in the duct into the cool air passage, and closes the through hole other than the through hole. Showcase. 2. By expanding the rear part of the cold air passage,
2. The open showcase according to claim 1, wherein a plurality of vertically extending through holes correspond to a rear portion of the cool air passage. 3. The open showcase according to claim 1, wherein a lower outlet is formed at a rear portion of the shelf device so as to communicate with the cool air passage and blow out cool air to a lower surface of the shelf device. 4. A guard attached to a front portion of the shelf device for preventing a product from falling, a holding portion formed upright at a front portion of the shelf device, and a corner of the shelf device where the holding portion is located. A holding member attached to the shelf device so as to face the outside of the corner, and a plurality of folding grooves are formed in the guard, and the guard is bent at any of the folding grooves, The open showcase according to claim 1, wherein the open showcase is sandwiched between the corner and the holding member in a state of being along the outer surface. 5. A top plate is attached to an upper end portion of the heat insulating wall above the uppermost shelf device, and a cool air discharge port communicating with a duct is formed below a lower portion of the top plate at the back. 5. The open showcase according to claim 1, wherein the top plate is freely openable and closable. 6. An openable and closable top plate is mounted on the upper end of the heat insulating wall above the uppermost shelf device, and below the top plate, the upper ends of the top plate and the partition plate are provided. And a damper for closing and opening the duct at an upstream side of the cool air discharge port in conjunction with opening and closing of the top plate, while forming a cool air discharge port communicating with the duct. The open showcase according to claim 1, 2, 3, or 4.