JP2001133133A - Open showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an open showcase which can be fixed ideally on the service counter of a shop. SOLUTION: An open showcase 1 is provided with a door 11 which openably closes the rear opening 9 of a display room 13, a top duct 51 which is formed above the display room 13 and the front end of which is communicating with a discharge opening 61 formed above the front opening 12 of the case 1, and a cooling chamber 17 which is formed below the display room 13 and the front end of which is communicating with a suction opening 29 formed below the front opening 12. The case 1 is also provided with a rear duct 41 formed in the door 11 in such a way that, when the door 11 closes the rear face of the display room 13, the upper end of the duct 41 is communicating with the rear end of the top duct 51 and the lower end of the duct 41 is communicating with the rear end of the cooling chamber 17. In addition, an air circulating means is positioned in a series of circulating duct constituted of the cooling chamber 17, rear duct 41, and top duct 51.

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 display room with an opening at the front and cooling the display room with a cooling device.

[0002]

2. Description of the Related Art A conventional open showcase of this type is disclosed in, for example, Japanese Patent Application Laid-Open No. Hei 5-306875. That is, this kind of open showcase is installed in a store such as a supermarket or a convenience store, and as shown in the above-mentioned publication, forms a display room that opens to the front inside a heat insulating wall, and a plurality of stages are provided in the display room. Shelf is erected to display products. In addition, a cool air curtain is formed at the front opening of the display room, and a part is circulated in the display room to cool the display room to a freezing or refrigeration temperature.

[0003] In particular, in recent years, with the development of convenience stores, one example is to promote various kinds of beverages such as nutritional drinks by putting various relatively small-volume beverages together in one open showcase. Is increasing.

[0004]

However, conventionally, beverages are displayed in an open showcase installed on the floor of a convenience store as shown in the above publication. However, it has been known that it is more advantageous to display this kind of beverage in the vicinity of a cash register counter.

[0005] Heretofore, a desk showcase with a front glass (front and rear doors, which may be a transparent resin plate in addition to glass) is placed on a cash register counter to cool or heat beverages such as coffee. Although there was something to do, the glass door (or transparent resin door) had to be opened and closed by all means for taking in and out of the beverage, which had a drawback that the purchase intention was lost.

In view of this, an open showcase in which the front of a tabletop showcase is open is conceivable. In particular, it is desired to refill products from the back of the showcase, for example, when placed on a cashier counter. However, when a normal door is formed on the rear surface of the showcase, there is a problem that a cool air duct of an air curtain formed on the front surface of the showcase cannot be formed.

The present invention has been made to solve the above-mentioned conventional technical problem, and provides an open showcase suitable for being installed on a counter of a store.

[0008]

An open showcase according to the present invention comprises an air curtain formed at a front opening of a display room, a door for opening and closing a rear opening of the display room, and a display. A ceiling duct formed above the room, with the front end communicating with the discharge port above the front opening, a bottom duct formed below the display room, and a front end communicating with the suction port below the front opening, and inside the door With the door closed the rear surface of the display room, the upper end of the rear duct communicates with the rear end of the top duct, and the lower end of the rear duct communicates with the rear end of the bottom duct. The air circulation means is arranged in a series of circulation ducts composed of a duct, a rear duct and a top duct.

According to the present invention, in the open showcase in which the air curtain is formed in the front opening of the display room, the door is formed so that the entire rear opening of the display room can be rotated and opened and closed freely. Thus, it is possible to replenish and replenish products from the entire rear surface of the display room without any trouble.

According to the present invention in addition to the above, according to the present invention, a ceiling duct formed above the display room and having a front end communicating with the discharge port above the front opening, and formed below the display room, and a front end formed on the front surface A bottom duct communicating with the suction opening at the bottom of the opening, and a rear duct formed in the door, with the door closing the rear surface of the display room, the upper end of the rear duct communicates with the rear end of the top duct, The lower end of the rear duct communicates with the rear end of the bottom duct, and the air circulation means is arranged in a series of circulation ducts composed of these bottom duct, rear duct and top duct, so when the door is closed, The air sucked from the inlet at the lower part of the front opening can form an air curtain at the front opening by a circulation duct composed of a bottom duct and a rear duct and a top duct formed in the door. . This makes it possible to reduce the leakage of cool air from the front opening to the outside.

In the open showcase according to a second aspect of the present invention, in addition to the above invention, the door is rotated to open and close the rear opening of the display room, and the communicating portion between the bottom duct and the rear duct, and the top duct and the rear portion. The communication portion of the duct is characterized by an inclined surface that advances toward the inside of the rear opening.

According to the second aspect of the present invention, in addition to the above aspect, the door pivots to open and close the rear opening of the display room,
Since the communication part between the bottom duct and the rear duct and the communication part between the top duct and the rear duct are inclined surfaces that advance toward the inside of the rear opening, without disturbing the circulation duct,
The door can be opened and closed without any trouble.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a front view of an open showcase 1 as an embodiment to which the present invention is applied, FIG. 2 is a side view of the open showcase 1, FIG. 3 is a rear view of the open showcase 1, and FIG. A rear view of the open showcase 1 in a state where the open showcase 1 is in a state of being broken, and FIG.

The open showcase 1 is, for example, a tabletop open showcase placed on a cashier counter C (FIG. 15) of a convenience store. The open showcase 1 has a heat insulating wall 4 mounted on a unit base 3 at the bottom, and A bottom plate 6 made of hard resin attached to the upper side of the heat insulating wall 4;
Side plates 7, 7 erected on the left and right sides of the unit base 3, a top plate 8 erected between the upper ends of the side plates 7, 7, and a bottom plate 6, side plates 7, 7, and a rear edge of the top plate 8 surround the unit. The display room 13 is constituted by a door 11 and the like that openably closes an opening 9 on the rear surface to be opened and closed, and a space surrounded by the door 11, the top plate 8, the side plates 7, 7 and the bottom plate 6 is opened (12) in the front. And

The space inside the unit base 3 below the heat insulating wall 4 is a machine room 14. Reference numeral 16 denotes a reinforcing angle attached to the left and right sides of the unit base 3.

The heat insulating wall 4 has a stepped shape with a lower front portion and a higher rear portion, whereby a lower portion 4A is provided at the front portion.
A high portion 4B is formed at the rear. The lower portion 4A is low and gently inclined backward, and the high portion 4B is low and gently inclined forward. The vertical wall portion 4C connecting the high portion 4B and the low portion 4A is an inclined wall whose upper portion is slightly retreated.

The bottom plate 6 is a lower part 4 of the heat insulating wall 4.
A, the upper part 4B and the vertical wall part 4C are attached so as to cover the heat insulating wall 4 and the unit base 3 with a space therebetween, so that a similar lower part 6A at the front, a higher part 6B at the rear, and the like. A vertical wall portion 6C between them is formed. Further, a cooling chamber 17 is formed between the bottom plate 6 and the heat insulating wall 4 as a bottom duct extending from the lower front part to the upper rear part,
A cooler 18 constituting a refrigeration cycle of the cooling device R is provided horizontally in a cooling chamber 17 on the high-order portion 4B, and a vertical wall portion 4 is provided.
A blower 19 is provided in a cooling chamber 17 at the front center of C.

A cooler partition plate 21 extending from the upper surface of the cooler 18 to the upper portion of the vertical wall 6C is mounted in the cooling chamber 17, and a space is provided between the cooler partition plate 21 and the bottom plate 6. Is formed. At the upper end of the vertical wall portion 6C of the bottom plate 6, a guard 6D for preventing a product from falling is integrally erected, and a lower discharge port 22 is formed below the guard 6D. And
The cooler partition plate 21 is continuous with the lower edge of the lower discharge port 22, and thereby, between the cooler partition plate 21 and the bottom plate 6,
A lower discharge duct 23 extending from the rear of the cooler 18 to the lower discharge port 22 is formed. Incidentally, reference numeral 24 denotes a fan case attached around the blower 19.

Further, the vertical wall portion 6C of the bottom plate 6 also has an inclined wall whose upper portion is slightly retreated, and a discharge guide 26 for concealing the lower discharge port 22 is attached to the front surface thereof, and is opened downward. Further, a projection 2 is provided below the lower discharge port 22.
7 are integrally formed. The lower portion 6A of the bottom plate 6 is also gently inclined backward and low, but its front portion is bent obliquely forward and downward, and a suction port 29 is formed there (FIG. 6). The front opening of the suction port 29 has a flat opening 5-4.
No. 3458, a flat fluorescent lamp 3 having a structure
1 is erected and is located at the lower edge of the opening 12 of the display room 13. The flat fluorescent lamp 31 emits light in the front-rear direction, and has a predetermined advertisement display on the front surface.

The high portion 6B of the bottom plate 6 is also gently inclined so as to be raised rearward, but its rear end is stepped down, and the rear wall portion 33 located on the rear side of the cooler 18 is provided.
Is formed with a communication hole 32. In addition, this communication hole 32
The rear wall 33 on which the bottom plate 6 is formed is an inclined surface having an upper portion on the front side.

On the other hand, the door 11 is constructed by loading a heat insulating material 38 between an outer plate 36 and an inner plate 37 made of hard resin.
Is rotatably supported at Further, a gap is formed between the heat insulating material 38 and the inner surface plate 37, and a rear duct 41 extending vertically is formed there. The upper surface 37A and the lower surface of the inner surface plate 37 located at the upper end and the lower end of the rear duct 41 are formed. 37B
Are formed with communication holes 42 and 43, respectively. The lower communication hole 43 matches the communication hole 32 of the bottom plate 6 when the door 11 is closed.

In this case, the lower surface 37B of the inner surface plate 37 around the communication hole 43 is an inclined surface having an upper portion on the front side.
Is closed and is in close contact with the rear wall portion 33 of the bottom plate 6. As a result, the communication holes 32 and 43 substantially coincide with each other, and the opening and closing of the door 11 is not hindered (FIG. 7). In addition, 47 is a gasket attached around the inner surface plate 37.

On the other hand, a heat insulating material 48 is also mounted inside the top plate 8, and an inner surface plate 49 is mounted below the heat insulating material 48 at intervals. A top duct 51 is formed therebetween. The rear part of the inner surface plate 49 has a shape that is folded back upward after descending.
A communication hole 53 is formed in the rear lower surface 49A of the 9. The upper communication hole 42 of the door 11 coincides with the communication hole 53 of the inner panel 49 when the door 11 is closed.

In this case, the rear lower surface 49A of the inner surface plate 49 around the communication hole 53 is an inclined surface having a rear portion facing upward.
1 is in close contact with the upper surface 37A of the door 11 when the door 1 is closed. As a result, the communication holes 42 and 53 substantially match each other. The gasket 47 is tightly sealed to the top plate 8, the bottom plate 6, and the side plates 7, 7 with the door 9 closing the opening 9 on the rear surface.

The front end of the top duct 51 is opened forward and downward, and an upper discharge port 61 is formed therein.
Thus, when the door 11 is closed, the lower suction port 2
9 to the cooling chamber 17, and from the cooling chamber 17 to the rear duct 4
A series of cool air circulation ducts reaching the upper discharge port 61 over the first and top ducts 51 is formed. With this cool air circulation duct, an air curtain can be formed at the front opening. This makes it possible to reduce the leakage of cool air from the front opening to the outside.

Further, a door 1 is provided in the rear opening 9 of the display room 13.
1 is formed, it is possible to carry out replenishment and the like of the product without any trouble, and the door 11 is connected to the communication hole 5.
Since the rear lower surface 49A of the inner plate 49 around the door 3 is in close contact with the upper surface 37A of the door 11 when the door 11 is closed, the communication holes 42 and 53 are substantially aligned with each other. Cooling chamber 17 as a duct and rear duct 4
Leakage of cool air from the circulation duct formed by the first and top ducts 51 and disturbance of the cool air circulation can be avoided beforehand. Further, the opening and closing of the door 11 can be performed without any trouble without being affected by the inner surface plate 49.

Next, the configuration inside the machine room 14 will be described. A plurality of slit-shaped exhaust ports 3A are formed on the front surface and the left and right side surfaces of the unit base 3, and the rear surface is opened. The opening is closed by the rear panel 2 so as to be openable and closable.

A compressor 63, a condenser 64, and a capillary tube (decompression device) 66 constituting a refrigeration cycle of the cooling device R together with the cooler 18 are installed in the machine room 14 formed in the unit base 3. Further, an electrical box 67 for storing a control board and the like, an evaporating dish 68, a blower 69 for a condenser, and the like are also provided.

In this case, as shown in FIG. 9, the compressor 63 is installed at the back right inside the machine room 14, and the condenser 64 is installed at the back left inside, and the blower 69 for the condenser is installed.
Is provided facing the front side. Here, 63D is a discharge pipe of the compressor 63, and 63S is a suction pipe. As described above, since the heat insulating wall 4 has the lower portion 4A at the front and the higher portion 4B at the rear, the height of the machine room 14 is low at the front and high at the rear. Therefore, the compressor 63 and the condenser 64, which have large dimensions by utilizing the high portion, are provided in parallel.

The condenser 64 and the condenser blower 69 are mounted so as to be lifted from the bottom of the unit base 3 by a substantially gate-shaped mounting plate 72, and the evaporating dish 68 is located below the condenser 64 and the condenser blower 69. It is inserted into the side so that it can be inserted and removed from the opening on the rear surface. Reference numeral 73 denotes an evaporating plate housed in the evaporating dish 68, which is made of a water-absorbing member.
It promotes the evaporation of drain water described later.

Further, an intake port 2A to which a filter 74 is attached is formed in a portion of the rear panel 2 corresponding to the condenser 64 (on the right side when viewed from behind). In addition, the blower 1
The motor 19M that drives the motor 9 is mounted in the machine room 14 on the rear side of the vertical wall portion 4C of the heat insulating wall 4, and is disposed between the compressor 63 and the condenser 64. The rotation shaft of the motor 19M penetrates the vertical wall 4C and is connected to the blower 19.

Further, a drain port 76 is formed on the left side of the high-order portion 4B of the heat insulating wall 4 toward the front, and a drain hose 77 penetrates through the heat insulating wall 4 from the drain port 76, and hangs down. The lower end is opened on the evaporating dish 68. Drain water (defrost water or dew) dripped from the cooler 18 is located at the high level 4
It flows down along B and flows into the drain 76. And
The water flows into the drain hose 77 from the drain port 76,
It is discharged into.

Next, the structure of the side plate 7 will be described with reference to FIGS. In this case, FIG. 12 shows the side plate 7 on the left side, and the rest shows the side plate 7 on the right side.
The left and right side plates 7 are symmetrical and basically have the same structure. The side plate 7 includes a vertical reinforcing plate 81, and an outer plate 82 and an inner plate 83 made of a transparent hard synthetic resin.

The lower edges of the outer plate 82 and the inner plate 83 substantially conform to the top surface shape of the unit base 3, and the front surface is gradually curved from the top plate 8 toward the front lower part of the unit base 3. It has a descending shape, thereby covering the side of the display room 13. Then, the reinforcing plate 81 penetrates through the notches 3B at both rear portions of the unit base 3 and enters the machine room 14, and the unit base 3 and / or the angle 16
The top plate 8 is screwed to the rear part, and the top plate 8 is connected between the upper ends of the reinforcing plates 81, 81.

In this case, the outer plate 82 and the inner plate 83 are overlapped with each other with the reinforcing plate 81 interposed therebetween at the rear thereof.
The peripheral portions are fixed to each other and screwed to the reinforcing plate 81. At this time, an air layer G is formed between the outer plate 82 and the inner plate 83 to improve heat insulation.

Further, overhanging portions 82A and 83A are formed at portions of the outer plate 82 and the inner plate 83 which cover the reinforcing plate 81 so as to extend outwardly vertically. An exhaust duct 86 extending vertically is formed between 82A and the reinforcing plate 81. The lower end of the exhaust duct 86 communicates with the inside of the machine room 14, and the upper end is covered with the top plate 8 and is closed. A plurality of exhaust outlets 87 are formed vertically on the front surface 82B of the overhang portion 82A, which is the front surface of the exhaust duct 86.

The inner plate 83 is provided with several aspirators 88 for preventing fogging in the air layer G. Further, since the exhaust duct 86 between the reinforcing plate 81 and the outer plate 82 before the top plate 8 is attached is opened upward as shown in FIG. 10, a strip colored between the overhanging portion 82A and the reinforcing plate 81 therefrom. The appearance and the sales effect can be improved by inserting a rectangular plate or a strip-shaped panel provided with an advertisement display.

Also, the overhang portion 83A of the inner plate 83 is
As shown in FIG. 2, shelf receivers 89... Slightly inclined forward and downward are integrally formed in four steps in the embodiment. The shelf receivers 89 are open in the direction of the side plate 7 facing the rear and rearward, and a shelf 91 made of transparent hard resin is inserted through the opening 9 on the rear surface. Thereby, the shelf 91 is moved to the display room 13 as shown in FIG.
It is erected inside.

As shown in FIG. 15, the open showcase 1 having the above-described structure is provided with a cashier counter C of a convenience store.
Placed on top. In the display room 13, goods V such as drinks and canned beverages are stored and displayed. in this case,
On the lower part 6A on the front side of the vertical wall part 6C of the bottom plate 6, products V are arranged from the opening 12 on the front surface as shown in FIG. As a result, the lower part 6A becomes the lowermost display surface. At this time, the lower part 6
Since A is slightly inclined backward, the product V leans on the protrusion 27 and the ejection guide 26 on the rear side without falling down to the front side.

On the other hand, the rear door 11 is opened on the high-order portion 6B of the bottom plate 6 serving as the display surface of the middle stage (when the shelf 91 is not installed, the uppermost position) and the shelf 91 serving as the uppermost display surface. The product V is stored through the opening 9. At this time, since the high portion 6B and the shelf 91 are low and slightly inclined to the front side, the goods V can be stored smoothly from the rear. In addition, the higher part 6B and the shelf 9
In the case of No. 1, since the front portion is lowered, the customer can easily see the product V, and when the customer takes out the product V in the front row, the subsequent product V automatically moves to the front row.

When the power is turned on and the operation is started, first, the flat fluorescent lamp 31 is turned on to make the advertising characters and the like stand out in front and illuminate the inside of the display room 13 behind. The compressor 63 and the blower 19 (the motor 19
M), when the condenser blower 69 is operated, the compressor 63
The high-temperature and high-pressure gas refrigerant discharged from the discharge pipe 63D flows into the condenser 64, where it is condensed and liquefied by the outside air ventilated by the condenser blower 69. After the condensed liquid refrigerant is decompressed by the capillary tube 66, it flows into the cooler 18 and evaporates.

At this time, heat is taken from the air in the cooling chamber 17 to exert a cooling effect. The refrigerant flowing out of the cooler 18 is sucked into the compressor 63 from the suction pipe 63S and is compressed again. Then, when the blower 19 is operated, FIGS.
As shown by an arrow, air is sucked from the suction port 29 side and discharged toward the cooler 18. As described above, the cool air in the cooling chamber 17 that has been cooled by heat exchange with the cooler 18 exits through the communication hole 32 and enters the rear duct 41 through the communication hole 43. After ascending in the rear duct 41 and entering the top duct 51 through the communication holes 42 and 53 and moving forward, the discharge port 6
1 is discharged toward the front opening 12 of the display room 13.

The cool air discharged from the discharge port 61 is
To the suction port 29 while forming an air curtain at
It is guided by the flat fluorescent lamp 31 and is sucked into the suction port 29 by the suction force of the blower 19. Then, a part of the air curtain is circulated in the display room 13 and the inside of the display room 13 is cooled to a predetermined temperature. Further, a part of the cool air that has flowed out of the cooler 18 enters the lower discharge duct 23, moves forward there, and is discharged from the lower discharge port 22 to the front of the vertical wall 6C.

The lower part 6A of the lowermost display surface, which is farther from the discharge port 61, tends to have a lower cooling effect, but tends to supply the cool air directly from the lower discharge port 22 as described above. The shortage is resolved. In addition, lower discharge port 2
2 is provided with a discharge guide 26, and a projection 2
7, the cool air discharge and cool air circulation from the lower discharge port 22 are not hindered by the product V on the lower portion 6A.

Here, the height L1 from the bottom surface of the unit base 3 of the open showcase 1, that is, from the installation surface to the upper surface of the top plate 8 is 700 mm to 750 mm (7 in this embodiment).
15mm), and the bottom display surface (lower part 6A)
The height L2 is set in a range of 100 mm or more and 200 mm or less (149 mm in the embodiment). The height L3 from the installation surface to the upper end of the flat fluorescent lamp 31 is 200 mm to 210 mm (205 m in the embodiment).
m), from the installation surface to the middle display surface (higher part 6
The height L4 up to B) is set in a range of 300 mm or more and 400 mm or less (304 mm in the embodiment).

Further, from the installation surface to the uppermost display surface (shelf 9)
The height L5 up to 1) is set in the range of 400 mm to 700 mm (489 mm in the embodiment), and the height L6 from the installation surface to the front end of the top plate 8 is 650 mm to 70 mm.
It is set to 0 mm (668 mm in the embodiment). The front and rear dimension L7 of the open showcase 1 is 450 m.
It is set to be at least m and at most 550 mm (490 mm in the embodiment).

Here, the height of the cashier counter C provided in the convenience store is usually 800 mm to 1000 m.
m and its depth is about 550 mm. Therefore, according to the open showcase 1 of the present invention, the product V can be stably installed on the cashier counter C and displayed in the display room 13 while cooling the product V. Thereby, it is possible to promote the desire to purchase a product V such as a drink or a canned beverage that the user wants to sell particularly near the cashier counter C, thereby contributing to an increase in sales.

When the open showcase 1 is installed on the cashier counter C, the height from the floor to the lowermost display surface (lower portion 6A) is in the range of 900 mm to 1200 mm. Thereby, the lowermost display surface (lower part 6
A) The height is approximately from the waist to the chest of the customer,
The visibility of the commodity V at the bottom is improved, and the commodity V is easily taken out.

Further, the height from the middle display surface (high portion 6B) to the uppermost display surface (shelf 91; high portion 6B when shelf 91 is not installed) is 300 mm or more from the installation surface.
Similarly, when the open showcase 1 is installed on the cashier counter C, the height from the floor to the uppermost display surface (the shelf 91 or the higher portion 6B) is in the range of 1100 mm to 1700 mm. And height. Thereby, the height of the uppermost display surface is in the range from the abdomen to the face of the customer, the visibility of the uppermost product V is improved, and the product V can be easily taken out.

Further, as described above, the height of the machine room 14 is made lower at the front part and higher at the rear part due to the step shape of the heat insulating wall 4, so that the lowermost display surface (lower part 6A) is set lower. Meanwhile, it is possible to install a device having a large size such as the compressor 63 or the condenser 64 at the rear part in the machine room 14.

On the other hand, when the condenser blower 69 is operated, the outside air is sucked from the intake port 2 A of the rear panel 2, is passed through the condenser 64, and is blown to the evaporation tray 68 in front. As a result, the drain water in the evaporating dish 68 is evaporated. Some of the warm air that has been heated by the air cooling of the condenser 64 and the warm air generated by the compressor 63 flows out to the outside through the exhaust port 3A around the unit base 3, but the rest is cut out at the rear portions on both sides of the unit base 3. 3B, a part of the remainder flows out of the notch 3B to the outside, and the other part flows into the exhaust duct 86 of the side plates 7, 7 (FIG. 10).

The warm air flowing out of the notch 3B flows to the outer surface of the outer plate 82 below the side plate 7 and warms a portion where dew condensation is likely to occur near the suction port 29, thereby preventing dew condensation. Further, the warm air flowing into the exhaust duct 86 rises there as shown in FIG.
Spills towards the outside. Thereby, the outer surface of the outer plate 82, which is easily condensed by the temperature in the display room 13, can be heated, and the dew can be prevented or eliminated.

Here, since the upper end of the exhaust duct 86 is closed by the top plate 8, the pressure (static pressure) at the upper part of the exhaust duct 86 increases, whereby the upper exhaust outlet 87 is formed.
The more warm air flows out, the more. Therefore, it is possible to preferentially supply warm air to the upper portion of the outer surface of the outer plate 82 where dew condensation is most likely to occur in the vicinity of the discharge port 61, so that dew can be effectively eliminated.

It should be noted that the numerical values such as the dimensions shown in the above embodiment are not limited thereto, and can be variously changed within a range suitable for installation on a desk such as a cashier counter of a convenience store. Further, in the embodiment, a machine room 14 is formed below the heat insulating wall 4 and the compressor 6 of the cooling device R is provided therein.
Although the compressor 3 and the like are installed, the compressor and the condenser may be separately installed and connected to the cooler 18 in the open showcase by a refrigerant pipe, and the compressor and the like may be installed in a cashier counter.

[0055]

As described above in detail, according to the present invention, in an open showcase in which an air curtain is formed in the front opening of a display room, the entire rear opening of the display room is turned to close openably and closably. Since the door is formed, it is possible to carry out replenishment and the like of goods from the entire rear surface of the display room without any trouble.

According to the present invention in addition to the above, according to the present invention, a top end duct is formed above the display room, and a front end is formed below the display room, and a front end communicates with the discharge port above the front opening. A bottom duct communicating with the suction opening at the bottom of the opening, and a rear duct formed in the door, with the door closing the rear surface of the display room, the upper end of the rear duct communicates with the rear end of the top duct, The lower end of the rear duct communicates with the rear end of the bottom duct, and the air circulation means is arranged in a series of circulation ducts composed of these bottom duct, rear duct and top duct, so when the door is closed, The air sucked from the inlet at the lower part of the front opening can form an air curtain at the front opening by a circulation duct composed of a bottom duct and a rear duct and a top duct formed in the door. . This makes it possible to reduce the leakage of cool air from the front opening to the outside.

According to the second aspect of the present invention, in addition to the above aspect, the door pivots to open and close the rear opening of the display room,
Since the communication part between the bottom duct and the rear duct and the communication part between the top duct and the rear duct are inclined surfaces that advance toward the inside of the rear opening, without disturbing the circulation duct,
The door can be opened and closed without any trouble.

[Brief description of the drawings]

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

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

FIG. 3 is a rear view of the open showcase of the present invention.

FIG. 4 is a rear view excluding a rear panel of the open showcase of the present invention.

FIG. 5 is a vertical side view of the open showcase of the present invention.

FIG. 6 is an enlarged vertical sectional side view of a front part of a heat insulating wall of the open showcase of the present invention.

FIG. 7 is an enlarged vertical sectional side view of a rear part of a heat insulating wall of the open showcase of the present invention.

FIG. 8 is an enlarged vertical sectional side view of a rear portion of a top plate of the open showcase of the present invention.

FIG. 9 is a plan sectional view of a machine room portion of the open showcase of the present invention.

FIG. 10 is a side view of a right side plate of the open showcase of the present invention.

FIG. 11 is a side view of the side plate of FIG. 10;

FIG. 12 is a side view of the left side plate of the open showcase of the present invention.

FIG. 13 is a front view of the side plate of FIG. 10;

FIG. 14 is a plan sectional view of the side plate of FIG. 10;

FIG. 15 is a side view showing a state in which the open showcase of the present invention is installed on a cashier counter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Open showcase 3 Unit base 4 Heat insulation wall 6 Bottom plate 6A Low part (lowest display surface) 6B High part (middle or top display surface) 7 Side plate 8 Top plate 9, 12 Opening 11 Door 13 Display room 14 Machine Chamber 17 Cooling chamber 18 Cooler 19 Blower 22 Lower discharge port 29 Suction port 32 Communication hole 36 Outer plate 37, 49 Inner plate 37A Upper surface 37B Lower surface 49A Rear lower surface 41 Rear duct 42, 43, 53 Communication hole 51 Top duct 61 Discharge Exit 91 shelf (top display surface) C cashier counter

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shinya Ouchi 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Kazuo Tetsukawa 2 Keihanhondori, Moriguchi-shi, Osaka 5-5-5 Sanyo Electric Co., Ltd. (72) Inventor Kazuo Hariya 2-5-5 Sanyo Electric Co., Ltd., Sanyo Electric Co., Ltd. (72) Inventor Shinji Iura Keihan Moriguchi, Osaka 2-5-5 Hondori F-term (reference) in Sanyo Electric Co., Ltd. 3L102 JA04 KA01 KB05 KE05 KE15 LE03

Claims (2)

[Claims] 1. An open showcase in which an air curtain is formed in a front opening of a display room, a door which pivots a rear opening of the display room so as to be able to be opened and closed, and is formed above the display room. A top duct formed at the front end communicating with the discharge port at the upper portion of the front opening, a bottom duct formed below the display room, and a bottom duct formed at the front end with a suction port at the lower portion of the front opening, and formed in the door. A rear duct, wherein in a state where the door closes a rear surface of the display room, an upper end of the rear duct communicates with a rear end of the top duct, and a lower end of the rear duct communicates with a rear end of the bottom duct. In addition, an open showcase in which air circulation means is arranged in a series of circulation ducts composed of the bottom duct, the rear duct, and the top duct. 2. The door pivots to open and close a rear opening of the display room, and a communication portion between the bottom duct and the rear duct and a communication portion between the top duct and the rear duct face inward of the rear opening. 2. The open showcase according to claim 1, wherein the open showcase has an inclined surface that advances.