JPH0894236A - Open showcase - Google Patents

Abstract

PURPOSE: To provide an open showcase capable of smooth drainage processing of condensation water on a night cover. CONSTITUTION: There are provided a recessed part 42B formed on the upper part of an opening in a heat insulation wall, a night cover N provided in the recessed part 42B, side plates attached to opposite sides of the heat insulation wall, a drainage passage 73 formed in a space surrounded by the side plates, the heat insulation wall, and a sealing material, a drain pan part of a lower part of the heat insulation wall communicated with the drainage passage 73, and a communication part 72 communicated with the recessed part 42B and the drainage passage 73.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an open showcase having a night cover for protecting an air curtain at night.

[0002]

2. Description of the Related Art A conventional open showcase of this type is disclosed in, for example, Japanese Utility Model Laid-Open No. 59-105985 (F25D23 /
02), an air curtain is formed in the opening by discharging cool air from the discharge opening formed at the upper edge of the front opening of the heat insulating wall having a substantially U-shaped cross section toward the suction opening at the lower edge of the opening. At the same time, an automatic return type night cover is attached to a mounting plate (winding storage part) provided at the front end of the upper surface of the heat insulating wall, and when the store is closed at night, the night cover is pulled down to close the opening.

The structure of the conventional open showcase 100 will be described below with reference to FIGS. The conventional open showcase 100 is composed of a heat insulating wall 2 having a substantially U-shaped cross section, and side plates 3 provided with glass G attached to both sides of the heat insulating wall 2. A partition plate 4 is attached to the inside of the heat insulating wall 2 with a space therebetween.
A duct 6 is provided between the heat insulating wall 2 and the partition wall 4.

A bottom plate 7 is provided in front of the lower end of the partition plate 4 and has a heat insulating wall 2.
Is installed with a space for a duct between the bottom wall 2A and the bottom wall 2A, and the insides of the partition plate 4 and the bottom plate 7 are attached to the storage chamber 8
I am trying. A discharge port 12 provided with a honeycomb material 11 is formed at the upper edge of the front opening 9 of the heat insulating wall 2, and the discharge port 12 communicates with the duct 6. And the opening 9
A suction port 13 is formed at the lower edge.

On the other hand, below the bottom plate 7, the bottom wall 2A of the heat insulating wall 2 is provided.
A fan case 14 is installed on the drain receiving portion D on the upper surface, and a fan 16 is attached to the fan case 14. The drain receiving portion D communicates with a machine room 23 described later by a drain hose (not shown). In the duct 6 behind the partition plate 4, the cooler 1 of the cooling device is provided.
When the blower 16 is operated, the cool air that has exchanged heat with the cooler 17 is raised in the duct 6 and is discharged from the discharge port 12 toward the suction port 13. And
The cool air sucked from the suction port 13 is accelerated again by the blower 16. As a result, a cold air curtain is formed in the opening 9, and a part of this air curtain is circulated in the storage chamber 8 to cool the storage chamber 8.

A plurality of shelves 18 vertically arranged in the storage room 8
And a fluorescent lamp 19 is attached to the front part of the lower surface of each shelf 18. Side plate fluorescent lamp reflection plates 21 as front side plate members are vertically attached to the heat insulating wall 2 on both sides of the opening 9 of the heat insulating wall 2.
A fluorescent lamp 22 as an illuminating lamp is vertically installed inside the unit 1. Further, the machine room 23 is formed below the bottom wall 2A of the heat insulating wall 2, and in the machine room 23, a compressor and a condenser 24 (not shown) that constitute the cooling device,
A condenser blower 26 is installed. When this condenser blower 26 is operated, outside air is exposed to the machine room 2 as indicated by the arrow in the figure.
3, and the condenser 24 is air-cooled.

On the other hand, top plate mounting plates 31 are mounted on both sides of the front wall 2B of the heat insulating wall 2, and the upper ends of the side fluorescent lamp reflectors 21 are fixed to the top plate mounting plate 31. The honeycomb material 11 is held at the discharge port 12 by a rear holding plate 32 attached to the front end of the partition plate 4 and a front holding plate 33 attached to the front end front side of the ceiling wall 2B.

From the upper surface of the front end of the top wall 2B of the heat insulating wall 2, an extractor top 101 extends forward in the shape of an eaves and is fixed to the top plate mounting plate 31.
Between the front end of 1 and the lower end of the front holding plate 33, the reflection plate 3
4 is provided and attached to the top plate attachment plate 31. The reflecting plate 34 is, for example, a white-painted steel plate, and has a shape in which the reflecting plate 34 descends while being inclined obliquely rearward from the upper end and then descending vertically.

A glow starter 36 is attached to the front surface of the upper sloping wall of the reflection plate 34, and a fluorescent lamp 38 as an illuminating lamp is provided to the left and right on the front surface of the vertical wall of the reflection plate 34 via a bracket 37. Attached and held across. A light-transmitting shade 39 made of an acrylic milk translucent plate is attached in front of the fluorescent lamp 38 and the glow starter 37. This shade 39
The upper end of the outer top 101 and the reflector 3
4 is inserted and held between the upper ends of 4 and the lower end is attached to the top plate attaching plate 31, and a downwardly opened recess for accommodating the fluorescent lamp 38 is formed between the lower plate and the reflecting plate 34. .

On the upper surface of the extractor top 101,
A mounting plate 102 having a crank-shaped cross section, which is open to the front, is fixed in front of the top surface 2B of the heat insulating wall 2 and is protruded upward, and an automatic return type night cover N is provided in the mounting plate 102. It is installed. When the store is closed at night or the like, the night cover N is pulled down from the front side of the shade 39 to close the opening 9 to protect the air curtain, and when the store is opened, the night cover N is wound into the mounting plate 102 (automatically). (Winding) and opening 9 was opened.

[0011]

Here, the night cover N is cooled by the cool air curtain when used (when the opening 9 is closed) to cause dew condensation, but in the conventional open showcase 100, the night cover N Cover N mounting plate 1
Since 02 is attached to the upper surface of the extractor top 101, when the night cover N is wound, the dew condensation attached to the night cover N is collected on the upper surface of the extractor top 101. Therefore, the extractor top 101 was always soiled and unsanitary.

When the amount of condensed water increases, the front surface of the extractor top 101 eventually overflows to the front surface of the shade 39, so that the surroundings of the open showcase 100 are also soiled, and the shade 39 and the side plate 3 are turned around. If it enters the storage room 8, there is also a problem of causing a leakage fault of the fluorescent lamp 38 and the like.

The present invention has been made in order to solve the above-mentioned conventional technical problems, and provides an open showcase capable of smoothly performing the drainage treatment of the condensed water adhered to the night cover. The purpose is to

[0014]

That is, according to the open showcase of the invention of claim 1, by providing a partition plate inside the heat insulating wall having a substantially U-shaped cross section with a space therebetween, an outer duct and an inner side are provided. And a discharge port communicating with the duct is formed at the upper edge of the front opening of the heat insulating wall, and cool air is discharged from this discharge port to form an air curtain at the opening. , The night cover provided in this recess, the side plates attached to both sides of the heat insulating wall, the sealing material interposed between this side plate and the heat insulating wall, and the heat insulating wall A drain receiving portion formed in the lower portion, a drain passage formed in a space surrounded by the side plate, the heat insulating wall and the sealing material, and communicating with the drain receiving portion, and a communication portion communicating the recess and the drain passage. It is what

In the open showcase of the second aspect of the present invention, a partition plate is provided inside the heat insulating wall having a substantially U-shaped cross section so as to form a partition between the outer duct and the inner storage chamber. A discharge port communicating with the duct is formed at the upper edge of the front opening of the heat insulating wall, and cool air is discharged from the discharge port to form an air curtain at the opening, which is a recess formed above the opening. And a night cover provided in this recess, side plates attached to both sides of the heat insulating wall, side plate front members vertically arranged at the front end of this side plate, and formed at the bottom of the heat insulating wall. The drain receiving part, which is formed vertically between the side plate and the side plate front member, communicates with the drain receiving part, and is installed between the heat insulating wall and the side plate to cover the side part of the recess and the discharge port. A heat insulating plate and a recess formed in this heat insulating plate A water passage in which and a guiding portion which communicates.

In the open showcase according to a third aspect of the present invention, the illuminating lamp is attached to the side plate front member in the above.

According to the open showcase of the invention of claim 4, the partition plate is provided inside the heat insulating wall having a substantially U-shaped cross section so as to be spaced from each other, thereby partitioning the outer duct and the inner storage chamber. A discharge port communicating with the duct is formed at the upper edge of the front opening of the heat insulating wall, and cool air is discharged from the discharge port to form an air curtain at the opening, which is a recess formed above the opening. , A night cover provided in this recess, side plates attached to both sides of the heat insulating wall, a drain receiving part formed in the lower part of the heat insulating wall, and a heat insulating wall covering the side of the recess and the discharge port. A heat insulating plate interposed between the side plates,
The heat insulating plate is provided with a guide portion that connects the recess and the duct.

[0018]

According to the open showcase of the invention of claim 1, the night cover is provided in the recess formed above the front opening of the heat insulating wall, and the space surrounded by the side plate, the heat insulating wall and the sealing material is insulated. A drainage passage communicating with the drain receiving part at the bottom of the wall was formed, and a communication part connecting the recess and the drainage passage was formed, so the condensed water adhering to the night cover was collected in the recess when it was wound up. Then, it reaches the drainage passage through the communication portion, passes through it, and is finally discharged to the drain receiving portion.

Therefore, the ceiling of the heat insulating wall is not polluted by the condensed water adhering to the night cover and becomes unsanitary.
In addition, it is possible to prevent the inconvenience that the dew condensation water enters the storage chamber side and causes the electric leakage failure. Since the condensed water does not pass through the heat insulation wall, there is no risk of freezing.

According to the open showcase of the second aspect of the present invention, the night cover is provided in the recess formed above the front opening of the heat insulating wall, and the night cover extends vertically between the side plate and the side plate front member, and A drainage passage communicating with the drain receiving portion is formed, and a guide portion that communicates between the recess and the drainage passage is provided on a heat insulating plate that covers the side portion of the recess and the discharge port and is interposed between the heat insulating wall and the side plate. Since it was formed, the condensed water adhering to the night cover is collected in the recess when it is wound up, passes through the guide part of the heat insulating plate to reach the drain passage, and is finally discharged to the drain receiving part through it. Become so.

Therefore, the ceiling of the heat insulating wall is not polluted by the dew condensation water adhering to the night cover and becomes unsanitary.
In addition, it is possible to prevent the inconvenience that the dew condensation water enters the storage chamber side and causes the electric leakage failure.

In particular, according to the open showcase of the invention of claim 3, since the illumination lamp is attached to the side plate front member in addition to this, the condensed water passing through the drainage passage is warmed by the heat generated by the illumination lamp. , Will be able to evaporate. Therefore, the amount of drainage of the entire open showcase can be reduced.

According to the open showcase of the invention of claim 4, a night cover is provided in the recess formed above the front opening of the heat insulating wall, and the night cover is provided between the heat insulating wall and the side plate to cover the side of the recess and the discharge port. Since the guide plate that connects the recess and the duct is formed in the heat insulating plate provided in the, the dew condensation water adhering to the night cover is collected in the recess when it is wound, and the guide plate of the heat insulating plate is It goes through to a duct, through which it is finally discharged to the drain receiver.

Therefore, similarly to the above, the dew condensation water attached to the night cover does not stain the ceiling of the heat insulating wall to make it unsanitary, and the dew condensation water enters the storage chamber side to cause an electric leakage failure. It can be prevented in advance.

[0025]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a perspective view of an open showcase 1 of the present invention,
2 is a vertical side view of the open showcase 1, FIG. 3 is a vertical side view of the upper front end of the heat insulating wall 2 of the open showcase 1, FIG. 4 is a side view of the heat insulating wall 2 of the open showcase 1, and FIG. 5 is an open show. FIG. 6 is a side view of the upper front end of the heat insulating wall 2 of the case 1, and FIG. 6 is a perspective view of the upper front end of the heat insulating wall 2 of the open showcase 1. 12 to 1 in each figure.
The same symbols as 4 are the same.

The showcase 1 of the present invention comprises a heat insulating wall 2 having a substantially U-shaped cross section, and side plates 3 having glass G attached to both sides of the heat insulating wall 2. A partition plate 4 is attached to the inside of the heat insulating wall 2 with a space therebetween, and a duct 6 is formed between the partition plate 4 and the heat insulating wall 2 (outside of the partition wall 4).

A bottom plate 7 is provided in front of the lower end of the partition plate 4 and has a heat insulating wall 2.
Is installed with a space for a duct between the bottom wall 2A and the bottom wall 2A of the storage chamber 8 inside the partition plate 4 and the bottom plate 7.
To form a compartment. A drain receiving portion D is formed on the upper surface of the bottom wall 2A, and the drain receiving portion D is connected to a machine room 23 described later by a drain hose (not shown). A discharge port 12 provided with a honeycomb material 11 is formed at the upper edge of the front opening 9 of the heat insulating wall 2.
2 communicates with the duct 6. A suction port 13 is formed at the lower edge of the opening 9.

On the other hand, below the bottom plate 7, the bottom wall 2A of the heat insulating wall 2 is provided.
A fan case 14 is installed on the top, and a fan 16 is attached to the fan case 14. Also,
A cooler 17 of a cooling device is vertically installed in a duct 6 behind the partition plate 4, and the cooler 17 is operated when the blower 16 is operated.
The cold air that has exchanged heat with
It is discharged from 2 toward the suction port 13. Then, the cool air sucked through the suction port 13 is accelerated again by the blower 16. As a result, a cool air curtain is formed in the opening 9, and a part of this air curtain is stored in the storage chamber 8.
The storage chamber 8 is cooled by being circulated therein.

A plurality of shelves 18 vertically arranged in the storage chamber 8
And a fluorescent lamp 19 is attached to the front part of the lower surface of each shelf 18. Side plate fluorescent lamp reflection plates 21 as front side plate members are vertically attached to the heat insulating wall 2 on both sides of the opening 9 of the heat insulating wall 2.
A fluorescent lamp 22 as an illuminating lamp is vertically installed inside the unit 1. Further, a machine room 23 is formed below the bottom wall 2A of the heat insulating wall 2, and a compressor 25, a condenser 24, and a condenser blower 26 constituting the cooling device are installed in the machine room 23. There is. When the condenser blower 26 is operated, outside air is introduced into the machine room 23 as indicated by an arrow in the figure, and the condenser 24 and the compressor 25 are air-cooled.

On the other hand, top plate mounting plates 31 are mounted on both sides of the front wall 2B of the heat insulating wall 2, and the upper ends of the side fluorescent lamp reflectors 21 are fixed to the top plate mounting plate 31. The honeycomb material 11 is held at the discharge port 12 by a rear holding plate 32 attached to the front end of the partition plate 4 and a front holding plate 33 attached to the front end front side of the ceiling wall 2B.

A rear extractor top 42 as a mounting plate is fixed to the top plate mounting plate 31 on the upper surface of the front end of the ceiling wall 2B of the heat insulating wall 2. After this, in the front portion of the extractor top 42, a recess 42B having a concave cross-section recessed from the rear base portion 42A.
This recess 42B extends forward after descending the front surface of the front holding plate 33, and its front end portion extends upward at a predetermined inclination angle.

Further, at the same height as the base 42A in front of the extractor top 42, the front extractor top 43, which is an eave with a space from the recess 42B, is fixed to the top plate mounting plate 31. Has been done. The rear end 43A of the front extractor top 43 is inclined low toward the recess 42B of the rear extractor top 42.

A reflection plate 34 is provided between the front end of the front extractor top 43 and the lower end of the front holding plate 33, and is attached to the top plate mounting plate 31. The reflecting plate 34 is, for example, a white-painted steel plate, and has a shape in which it descends vertically while tilting obliquely backward from the upper end, and the front end of the recess 42B of the rear extractor top 42 is The upper surface of the reflector 34 is in contact with the back surface of the inclined portion.

A glow starter 36 is attached to the front surface of the upper inclined wall of the reflection plate 34, and a fluorescent lamp 38 as an illuminating lamp is provided to the left and right through a bracket 37 on the front surface of the vertical wall of the reflection plate 34. Attached and held across. A light-transmitting shade 39 made of an acrylic milk translucent plate is attached in front of the fluorescent lamp 38 and the glow starter 37. This shade 39
The upper end is inserted and held between the front end of the front extractor top 43 and the upper end of the reflection plate 34, and the lower end is attached to the top plate attachment plate 31, and the fluorescent lamp 3 is provided between the upper plate and the reflection plate 34.
A recess which is open downward is formed to accommodate 8.

In the recess 42B of the rear extractor top 42, an automatic reset type night cover N is housed and attached. Base 4 of rear extractor top 42
A cover plate 44 extending from 2A toward the front extractor top 43 is attached. The cover plate 44 is located above the night cover N to conceal it, and forms a drawer portion 46 with a space from the rear end 43A of the front extractor top 43. And this drawer 46
Further, the grip NH of the night cover N is pulled out slightly obliquely forward and upward and is placed on the rear end 43A.

Side frames 51 (constituting a part of the heat insulating wall 2) are mounted on both sides of the heat insulating wall 2 at both sides of the duct 6, and the top plate mounting plate 31 is a recess 42B. To the side of. Further, a through hole 52 is formed in a portion of the top plate mounting plate 31 which is located on the side of the recess 42B. Between the side plate 3 and the heat insulating wall 2, the top wall 2 of the heat insulating wall 2 is provided.
A heat insulating plate 53 that covers the recess 42B (top plate mounting plate 31) and the side of the honeycomb material 11 of the discharge port 12 is provided at the front end of B and is attached to the top plate mounting plate 31 and the like.

The heat insulating plate 53 is made of foamed polyethylene having a thickness of about 5 mm, and a communicating portion 72 is formed in a portion of the top plate mounting plate 31 corresponding to the through hole 52. Further, a loop-shaped sealing material 71 having a generally U-shape is attached to the side surface (outer surface) of the side frame 51 and the heat insulating wall 2, and is interposed between the side plate 3 and the glass G. The side frame 51, the heat insulating wall 2, the side plate 3, and the sealing material 7
The space surrounded by 1 is used as a drainage passage 73, and the communication part 72 is open in the drainage passage 73.

In addition, in the lower part of the side plate 3, for example, Japanese Unexamined Patent Publication No.
An unillustrated side plate drain receiver as shown in Japanese Patent No. 99188 (F25D21 / 14) is formed, and the lower part of the drainage passage 73 communicates with this side plate drain receiver. The side plate drain receiver communicates with the drain receiver D of the heat insulating wall 2, and as a result, the drainage passage 73 communicates with the drain receiver D.

With the above construction, when closing the store at night or the like, the grip NH of the night cover N, which is slightly allowed, is held on the front extractor top 43, pulled down from the front side of the shade 39, and the opening 9 is closed to close the air. Protect the curtain. When the store is opened, the night cover N is wound into the recess 42B of the rear extractor top 42 (automatic winding) to open the opening 9.

In this wound state, the night cover N is housed in the recess 42B located in the dead space between the reflecting plate 34 above the opening 9 and the front end (front holding plate 33) of the heat insulating wall 2. By using the space that was originally a dead space, the night cover N can be attached without changing the height dimension of the open showcase 1, whereby the height dimension of the heat insulating wall 2 can be increased. . Further, although the handle NH slightly protrudes, the night cover N is not substantially exposed to the front, so that the appearance of the open showcase 1 can be improved. In addition, since the cover plate 44 is located above the night cover N to cover it, the night cover N is less likely to be contaminated by dust in the air, which is hygienic.

Further, the condensed water adhered to the night cover N when the night cover N is wound up is collected in the recess 42B of the rear extractor top 42 and temporarily stored therein. The condensed water collected in the recess 42B is transmitted through the through hole 52.
Through the communication part 72 to enter the upper part of the drainage passage 73. The dew condensation water that has entered the drainage passage 73 flows down there, is eventually received by the side plate drain receiver, and is then discharged to the drain receiver D of the heat insulating wall 2.

Therefore, the ceiling of the heat insulating wall 2 will not be unclean due to the dew condensation water adhering to the night cover N, and the dew condensation water will enter the storage chamber 8 side to cause an electric leakage failure. It can be prevented.

7 to 9 show another constitution of the present invention. In the drawings, the same reference numerals as those in FIGS. 1 to 6 have the same or similar functions. In this case, the heat insulating plate 53 is provided with a groove-shaped guiding portion 56 that vertically drops downward from a portion corresponding to the periphery of the through hole 52 of the top plate mounting plate 31.

On the other hand, on the front edge of the glass G of the side plate 3, a side plate glass cover 57 having a U-shaped cross section is also provided as a side plate front member.
The side plate glass cover 57 is attached with a seal material 58 having a predetermined thickness vertically on the inner rear surface of the side plate glass cover 57. In addition, the side plate fluorescent lamp reflector 21
The outer surface of the sheet abuts on the inner side of the side plate glass cover 57, and a sealing material 59 having a predetermined thickness is also vertically attached between the rear end of the outer surface of the side plate fluorescent lamp reflector 21 and the glass G. As a result, a drainage passage 61, which is hatched in FIG. 9, is provided between the glass G and the side plate glass cover 57 and the side plate fluorescent lamp reflector 21.
62 is configured to extend vertically.

The condensed water adhering to the night cover N when the night cover N was wound up was removed by the rear extractor top 4
It is collected in the second recess 42B and similarly stored there once. The condensed water collected in the recess 42B is transmitted through the through hole 52.
To flow into the guide portion 56 by a capillary phenomenon, and pass through the guide portion 56 into the drain passage 62 at the front end portion of the side plate 3. The dew condensation water that has entered the drainage passage 62 flows down there, is eventually received by the side plate drain receiver, and is then discharged to the drain receiver D of the heat insulating wall 2.

Therefore, the ceiling of the heat insulating wall 2 will not be soiled by the dew condensation water adhering to the night cover N to make it unsanitary, and the dew condensation water will enter the storage chamber 8 side to cause an electric leakage failure. It can be prevented. Also,
The condensed water passing through the drainage passage 62 is warmed and evaporated by the heat generated by the fluorescent lamp 22. Further, even in the recess 42B, the dew condensation water is heated by the heat generated by the fluorescent lamp 38 and evaporates. As a result, the drainage amount of the open showcase 1 as a whole can be reduced.

Next, FIGS. 10 and 11 show still another constitution of the present invention. In the figure, the same reference numerals as those in FIGS. 1 to 9 have the same or similar functions. In this case, the top plate mounting plate 31 has through holes 52 at positions corresponding to the side portions of the recess 42B and the side portions of the duct 6, respectively.
A and 52B are drilled. Also, the heat insulating wall 2 and the side plate 3
The shape of the heat insulating plate 53 interposed therebetween is slightly different, and the groove-shaped guide portion 56 is cut out from the portion corresponding to the periphery of the through hole 52A to the rearward portion to the portion corresponding to the periphery of the through hole 52B. Has been formed.

As a result, the recess 42B and the upper portion of the duct 6 communicate with each other. Then, the condensed water collected in the recess 42B in the same manner as described above causes the guide portion 56 through the through hole 52A by the capillary phenomenon.
To the through hole 52B, through which the through hole 52B
Enter the duct 6 from. The dew condensation water that has entered the duct 6 flows down along the surface of the partition plate 4 on the duct 6 side, and is discharged to the drain receiver D of the heat insulating wall 2.

Therefore, similarly, the ceiling of the heat insulating wall 2 does not become unsanitary due to the dew condensation water adhering to the night cover N, and the dew condensation water enters the storage chamber 8 side to cause an electric leakage failure. Inconvenience can be prevented in advance.

[0050]

As described above in detail, according to the invention of claim 1, the night cover is provided in the recess formed above the front opening of the heat insulating wall, and the space surrounded by the side plate, the heat insulating wall and the sealing material is provided. Forms a drain passage communicating with the drain receiving portion at the bottom of the heat insulating wall and a communicating portion communicating the recess and the drain passage, so that the condensed water adhering to the night cover is It is collected in the facility, passes through the communication part, reaches the drainage passage, and passes through it to be finally discharged to the drain receiving part.

Therefore, the ceiling of the heat insulating wall is not polluted by the dew condensation water adhering to the night cover to make it unsanitary.
In addition, it is possible to prevent the inconvenience that the dew condensation water enters the storage chamber side and causes the electric leakage failure. Since the condensed water does not pass through the heat insulation wall, there is no risk of freezing.

According to the second aspect of the present invention, the night cover is provided in the recess formed above the front opening of the heat insulating wall, and the night cover extends vertically between the side plate and the side plate front member, and is provided in the drain receiving portion under the heat insulating wall. In addition to forming a drainage passage that communicates with the heat insulating plate that covers the recess and the side of the discharge port and is interposed between the heat insulating wall and the side plate,
Since the guide portion that connects the recess and the drainage passage is formed, the condensed water adhered to the night cover is collected in the recess when it is wound, and reaches the drainage passage through the guide portion of the heat insulating plate. After that, it is finally discharged to the drain receiving part.

Accordingly, the ceiling of the heat insulating wall is not polluted by the dew condensation water adhering to the night cover to make it unsanitary.
In addition, it is possible to prevent the inconvenience that the dew condensation water enters the storage chamber side and causes the electric leakage failure.

In particular, according to the third aspect of the present invention, since the side plate front member is additionally provided with the illumination lamp, the condensed water passing through the drainage passage is warmed and evaporated by the heat generated by the illumination lamp. Will be able to. Therefore, the amount of drainage of the entire open showcase can be reduced.

According to the invention of claim 4, a night cover is provided in the recess formed above the front opening of the heat insulating wall, and the night cover is provided between the heat insulating wall and the side plate so as to cover the side of the recess and the discharge port. Since the heat insulating plate is formed with the guide portion that communicates the recess and the duct, the condensed water adhering to the night cover is collected in the recess when wound, and passes through the guide portion of the heat insulating plate to the duct. After that, it will be finally discharged to the drain receiving part through it.

Therefore, similarly to the above, the dew condensation water attached to the night cover does not stain the ceiling of the heat insulating wall to make it unsanitary, and the dew condensation water enters the storage chamber side to cause an electric leakage failure. It can be prevented in advance.

[Brief description of 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 a vertical cross-sectional side view of the front end of the upper portion of the heat insulating wall of the open showcase of the present invention.

FIG. 4 is a side view of a heat insulating wall of the open showcase of the present invention.

FIG. 5 is a side view of the front end of the upper portion of the heat insulating wall of the open showcase of the present invention.

FIG. 6 is a perspective view of the front end of the upper part of the heat insulating wall of the open showcase of the present invention.

FIG. 7 is a side view of the upper front end of the heat insulating wall of another open showcase of the present invention.

FIG. 8 is a perspective view of an upper front end of a heat insulating wall of another open showcase of the present invention.

FIG. 9 is a plan sectional view of a front end portion of a side plate of another open showcase of the present invention.

FIG. 10 is a side view of the upper front end of the heat insulating wall of the open showcase of still another embodiment of the present invention.

FIG. 11 is a perspective view of the upper front end of the heat insulating wall of the open showcase of still another embodiment of the present invention.

FIG. 12 is a vertical sectional side view of a conventional open showcase.

FIG. 13 is a vertical sectional side view of a front end of an upper portion of a heat insulating wall of a conventional open showcase.

FIG. 14 is a perspective view of a front end of an upper portion of a heat insulating wall of a conventional open showcase.

[Explanation of symbols]

 1 Showcase 2 Heat-insulating wall 2B Top wall 3 Side plate 6 Duct 21 Side plate Fluorescent light reflector (side plate front member) 22 Fluorescent light (illumination light) 31 Top plate mounting plate 38 Fluorescent light 42 Rear extractor top 42B Recess 53 Heat insulating plate 56 Induction part 62, 73 Drainage passage 71 Seal material 72 Communication part D Drain receiving part N Night cover

Claims (4)

[Claims] 1. A partition plate is provided inside a heat insulating wall having a substantially U-shaped cross-section with a space therebetween to define an outer duct and an inner storage chamber and to form an upper edge of a front opening of the heat insulating wall. In an open showcase in which a discharge port communicating with the duct is formed, and cool air is discharged from the discharge port to form an air curtain in the opening, a recess formed above the opening and the recess A night cover provided in the place, side plates attached to both sides of the heat insulating wall, a seal material interposed between the side plate and the heat insulating wall, and a drain receiving portion formed in the lower portion of the heat insulating wall, An open characterized by comprising a drainage passage formed in a space surrounded by the side plate, the heat insulating wall and a sealing material and communicating with the drain receiving portion, and a communication portion communicating the recess with the drainage passage. Showcase. 2. A partition plate is provided inside the heat insulating wall having a substantially U-shaped cross section so as to be spaced apart from the outer duct to define an inner storage chamber, and the upper edge of the front opening of the heat insulating wall. In an open showcase in which a discharge port communicating with the duct is formed, and cool air is discharged from the discharge port to form an air curtain in the opening, a recess formed above the opening and the recess A night cover provided inside the facility, side plates attached to both sides of the heat insulating wall, side plate front members vertically provided at the front end of the side plate, and formed at the lower portion of the heat insulating wall. A drain receiving portion, a drain passage formed vertically between the side plate and the side plate front member, and communicating with the drain receiving portion;
The heat insulating plate is provided between the heat insulating wall and the side plate to cover the side portion of the recess and the discharge port, and a guide portion formed in the heat insulating plate and connecting the recess and the drainage passage. This is an open showcase. 3. The open showcase according to claim 2, wherein an illumination lamp is attached to the side plate front member. 4. A partition plate is provided inside the heat insulating wall having a substantially U-shaped cross section so as to be spaced apart from each other, thereby partitioning the outer duct and the inner storage chamber, and at the upper edge of the front opening of the heat insulating wall. In an open showcase in which a discharge port communicating with the duct is formed, and cool air is discharged from the discharge port to form an air curtain in the opening, a recess formed above the opening and the recess A night cover provided in the place, side plates attached to both sides of the heat insulating wall, a drain receiving portion formed in a lower portion of the heat insulating wall, and the heat insulating wall covering the side portions of the recess and the discharge port. An open showcase, comprising: a heat insulating plate interposed between the heat insulating plate and a side plate; and a guide portion formed on the heat insulating plate and connecting the recess to the duct.