JP2005160547A - Showcase - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a showcase which raises no reduction in cooling capability even without increasing the air velocity of discharged air. <P>SOLUTION: The cooling air is discharged from a second air discharging port 2g of a back surface side ventilation flue 2 as well, in addition to a first air discharging port 2e on the rear end of the upper surface opening of a showcase main body 1, and the air is sucked into an air suction port 2f through the showcase main body 1. In this case, the air which is discharged from the second air discharging port 2g passes between commodities in the showcase main body 1, and of which the temperature rise is less compared with air which comes into contact with the outside air such as air being discharged from the first air discharging port 2e. Thus, the air having less temperature rise which is discharged from the second air discharging port 2g can be fed to the air suction port 2f side, and even when air being discharged from the first air discharging port 2e has not sufficiently reached the air suction port 2f, an insufficient cooling on the air suction port 2f side can be eliminated. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a showcase installed in a store such as a convenience store.

  Conventionally, as a showcase of this type, a showcase body having an open top surface, a ventilation path formed along the front side, the bottom side, and the back side in the showcase body, and cooling disposed in the ventilation path The air sucked into the ventilation path from the air inlet provided on the front end side of the upper surface opening of the showcase body is cooled by the cooler, and is placed on the rear end side of the upper surface opening of the showcase body. It is known that an air curtain is formed in an upper surface opening of a showcase body by discharging from an air discharge port provided along the upper surface opening (see, for example, Patent Document 1).

In addition, there is also known an apparatus in which an upper space part formed transparently on the front surface and both side surfaces is provided above the upper surface opening of the showcase body, and the front surface of the upper space part is opened and closed by a sliding door ( For example, see Patent Document 2.)
JP 2000-386470 A JP-A-11-230660

  However, in the showcase in which the air curtain is formed in the upper surface opening of the showcase body as described above, the air discharged from the air discharge port is only cooled by the air curtain in the upper surface opening. If the wind speed is low, the cold air does not reach the air inlet sufficiently, and the vicinity of the air inlet becomes insufficiently cooled. In particular, when the upper part of the suction side ventilation path at the front of the showcase body is formed of a transparent plate, it is necessary to provide a heater for preventing condensation on the suction side of the ventilation path. It was the result of lowering.

  Therefore, if the wind speed of the discharge air is increased, insufficient cooling on the air inlet side can be solved. However, on the other hand, the amount of air blown becomes excessive, and for example, an open type showcase as in Patent Document 1 is used. Then, the amount of outside air invading increases, and cold air leaks to the outside, or in a closed type showcase as in Patent Document 2, cold air flows into the upper space part and is likely to cause condensation on the sliding door in the upper space part. There was a problem.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a showcase that does not cause a decrease in cooling capacity without increasing the wind speed of the discharge air.

  In order to achieve the above object, the present invention is arranged in a showcase body having an open top surface, a ventilation path formed along the front side, the bottom side, and the back side in the showcase body, and the ventilation path. A cooler and a blower are provided, and the air sucked into the ventilation path from one end in the front-rear direction of the top opening of the showcase body is cooled by the cooler, and the upper surface from the other end in the front-rear direction of the upper opening of the showcase body In the showcase for discharging along the opening, a first air discharge port for discharging air from the upper end side of the ventilation path is provided on the other end in the front-rear direction of the upper surface opening of the showcase body, and the ventilation path A second air discharge port for discharging air into the showcase body is provided on at least one of the bottom side and the back side.

  Thereby, the cooling air is also discharged from the second air discharge port on the bottom surface side or the back surface side of the ventilation path, and this air is sucked into the air suction port through the showcase body. At that time, since the air discharged from the second air discharge port passes between the products in the showcase body, the temperature is higher than that of the air in contact with the outside air such as the air discharged from the first air discharge port. The rise is small. Therefore, since air with a small temperature rise discharged from the second air discharge port is supplied to the air intake port side, the air discharged from the first air discharge port does not reach the air intake port sufficiently. However, the lack of cooling on the air inlet side can be resolved.

  Further, in order to achieve the above object, the present invention provides a showcase body having an open top surface, a ventilation path formed along the front side, the bottom side, and the back side in the showcase body, and disposed in the ventilation path. A cooler and a blower, and a dew condensation prevention heater arranged on the suction side of the ventilation path, and the air sucked into the ventilation path from one end side in the front-rear direction of the top opening of the showcase body by the cooler In the showcase cooled and discharged along the upper surface opening from the other end in the front-rear direction of the upper surface opening of the showcase body, a temperature detecting means for detecting the temperature of the air in the showcase body, and a temperature And a control unit that reduces the amount of heat generated by the heater or stops the heater when the detection temperature of the detection unit reaches or exceeds a predetermined temperature.

  As a result, when the temperature detected by the temperature detection means exceeds a predetermined temperature, the amount of heat generated by the heater decreases or the heater stops, so if the external heat load increases and the temperature inside the showcase body increases The heat load by the heater is reduced.

  According to the present invention, since the cooling capacity is not lowered without increasing the wind speed of the discharge air, the cooling capacity can be prevented from being lowered, and the inside of the showcase body can be efficiently cooled.

  1 and 2 show a first embodiment of the present invention. FIG. 1 is an overall perspective view of a showcase, and FIG. 2 is a side sectional view thereof.

  This showcase includes a showcase body 1 having an open top surface, a ventilation path 2 formed along the front side, the bottom side, and the back side in the showcase body 1, and a cooler disposed in the ventilation path 2. 3, a blower 4, a compressor 5 and a condenser 6 connected to the refrigerant circuit of the cooler 3, and a dew condensation prevention heater 7 disposed on the suction side of the ventilation path 2.

  The showcase body 1 is surrounded by a heat insulating wall 1a, and the upper front portion thereof is formed by a front transparent plate 1b made of transparent glass. A machine room 1c is provided in the lower part of the showcase body 1, and a compressor 5, a condenser 6 and a condenser fan 6a are disposed in the machine room 1c. An opening frame 1 d extending along the periphery of the upper surface opening of the showcase body 1 is attached.

  The ventilation path 2 is formed between a front plate 2 a, a bottom plate 2 b and a back plate 2 c provided in the showcase body 1 and the heat insulating wall 1 a, and a cooler 3 and a blower 4 are provided in the bottom side ventilation path 2. Is arranged. Above the front plate 2a, there is provided a rear transparent plate 2d facing the front transparent plate 1b with a space therebetween, and the suction side of the ventilation path 2 is formed between the transparent plates 1b and 2d. That is, the product in the showcase body 1 is seen through from the outside through the transparent plates 1b and 2d. A first air discharge port 2e that opens toward the front is provided at the upper end of the rear-side air passage 2, and the upper end of the front-side air passage 2, that is, the upper end between the transparent plates 1b and 2d is directed rearward. An air inlet 2f that opens is provided. Further, the rear plate 2 c is provided with a second air discharge port 2 g, and the second air discharge port 2 g is disposed in the lower part of the back side ventilation path 2.

  The heater 7 is composed of heating wires arranged on the upper and lower ends of the front transparent plate 1b and on the front side of the opening frame 1d, and is driven by electric power from a power source (not shown).

  In the showcase configured as described above, the air sucked into the ventilation path 2 from the air suction port 2f is cooled by the cooler 3 and discharged from the first air discharge port 2e of the ventilation path 2. Thus, an air curtain is formed in the upper surface opening of the showcase body 1. At this time, the cooling air is also discharged from the second air discharge port 2g of the rear side air passage 2, and this air passes through the inside of the showcase body 1 and is sucked into the air suction port 2f. Further, since the air discharged from the second air discharge port 2g passes between the products in the showcase body 1, it is in contact with the outside air as an air curtain like the air discharged from the first air discharge port 2e. Temperature rise is small compared to air.

  As described above, according to the showcase of the present embodiment, in addition to the first air discharge port 2e provided at the rear end of the upper surface opening of the showcase body 1, the second airflow passage 2 provided at the lower portion of the rear side air passage 2 is provided. Since the cooling air is also discharged from the air discharge port 2g, air with a small temperature rise discharged from the second air discharge port 2g can be supplied to the air intake port 2f side, and the first air discharge port can be supplied. Even when the air discharged from the outlet 2e does not reach the air suction port 2f sufficiently, the insufficient cooling on the air suction port 2f side can be solved. Therefore, it is possible to prevent the cooling capacity from being lowered without increasing the wind speed of the air discharged from the first air discharge port 2e, and the inside of the showcase body 1 can be efficiently cooled.

  In the above embodiment, the second air discharge port 2g is provided in the lower part of the rear side air passage 2, but the bottom surface of the second air discharge port 2g is shown in FIG. You may make it provide in both the side and the back side.

  4 and 5 show a second embodiment of the present invention. FIG. 4 is an overall perspective view of the showcase, and FIG. 5 is a side sectional view thereof. In addition, the same code | symbol is attached | subjected and shown to the component equivalent to 1st Embodiment.

  The showcase of this embodiment is a so-called closed type in which an upper space portion 8 is provided above the upper surface opening of the showcase body 1, and the upper space portion 8 includes a top plate 8a, a back plate 8b, and a pair of right and left. The side plate 8c is covered. The front surface of the upper space 8 is opened and closed by a sliding door 8d, and each of the sliding door 8d and each side plate 8c is formed of a transparent glass plate. Moreover, the illuminating lamp 8e which illuminates the inside of the upper space part 8 is attached to the lower surface of the top plate 8a.

  In the showcase of the present embodiment, since the second air discharge port 2g is provided in the lower portion of the rear side air passage 2 as in the above-described embodiment, the air discharged from the first air discharge port 2e Even if the wind speed is not increased, the cooling capacity can be prevented from decreasing. Further, since it is not necessary to increase the wind speed of the air discharged from the first air discharge port 2e, the cold air does not flow into the upper space portion 8, and the sliding door 8d and the side plates 8c of the upper space portion 8 do not flow. It is effective for preventing condensation.

  In the above embodiment, the second air discharge port 2g is provided in the lower portion of the rear side air passage 2. However, for example, as shown in FIG. 6, the second air discharge port 2g is connected to the bottom plate 2b. Air may be discharged from the bottom-side air passage 2 by providing it at a plurality of locations at the rear or by providing second air discharge ports 2g at a plurality of locations throughout the bottom plate 2b as shown in FIG. Good. Such a configuration can also be applied to the open-type showcase shown in the first embodiment. Moreover, although not shown in figure, also in 2nd Embodiment, it is possible to provide the 2nd air discharge port 2g in both the bottom face side and back side of the ventilation path 2. FIG.

  8 to 10 show a third embodiment of the present invention. FIG. 8 is a side sectional view of the showcase, FIG. 9 is a block diagram showing a control system, and FIG. 10 is a flowchart showing the operation of the control unit. is there. In addition, the same code | symbol is attached | subjected and shown to the component equivalent to 1st and 2nd embodiment.

  The showcase of this embodiment includes a temperature sensor 9 that detects the temperature of air in the showcase body 1 and a control unit 10 that controls the amount of heat generated by the dew condensation prevention heater 7 based on the temperature detected by the temperature sensor 9. In the same manner as in the second embodiment, an upper space 8 is provided above the upper surface opening of the showcase body 1.

  The temperature sensor 9 is provided in the front side air passage 2 (below the transparent plates 1b and 2d), and detects the temperature of the air sucked into the front side air passage 2.

  The control unit 10 is constituted by a microcomputer and is connected to the heater 7 and the temperature sensor 9.

  That is, as shown in the flowchart of FIG. 9, when the detected temperature T of the temperature sensor 9 is lower than the predetermined reference temperature T1 (S1), the controller 10 drives the heater 7 with the first energization amount ( S2) When the detected temperature T of the temperature sensor 9 becomes equal to or higher than the reference temperature T1 (S1), the heater 7 is driven with a second energization amount smaller than the first energization amount (S3).

  As described above, according to the showcase of the present embodiment, when the temperature detected by the temperature sensor 9 exceeds a predetermined temperature, the amount of heat generated by the heater 7 is reduced. When the temperature in the case body 1 rises, the heat load by the heater 7 can be reduced, and the cooling capacity can be prevented from being lowered without increasing the wind speed of the air discharged from the first air discharge port 2e. can do. Further, similarly to the above embodiment, since the air with a small temperature rise discharged from the second air discharge port 2g can be supplied to the air intake port 2f side, the lack of cooling on the air intake port 2f side is solved. Can do.

  11 and 12 show a fourth embodiment of the present invention. FIG. 11 is a side sectional view of a showcase, and FIG. 12 is a block diagram showing a control system. In addition, the same code | symbol is attached | subjected and shown to the component equivalent to 1st and 2nd embodiment.

  The showcase of this embodiment includes an outside air temperature sensor 11 that detects an external temperature inside the showcase body 1, and a controller 12 that controls the amount of heat generated by the dew condensation prevention heater 7 based on the temperature detected by the outside air temperature sensor 11. As in the second embodiment, an upper space 8 is provided above the upper surface opening of the showcase body 1.

  The outside air temperature sensor 11 is provided on the front surface of the showcase body 1 and detects the temperature of the air in front of the showcase body 1.

  The control unit 12 is configured by a microcomputer and is connected to the heater 7 and the outside air temperature sensor 11. That is, when the temperature detected by the outside air temperature sensor 11 is equal to or higher than a predetermined temperature, the controller 12 reduces the amount of heat generated by the heater 7 or stops the heater 7. Since the operation of the control unit 12 is substantially the same as that of the third embodiment, the flowchart is omitted.

  According to the showcase of this embodiment, when the temperature outside the showcase body 1 rises, the heat load due to the heater 7 can be reduced, so that the cooling capacity can be prevented from being lowered as in the above embodiment. be able to. Further, similarly to the above embodiment, since the air with a small temperature rise discharged from the second air discharge port 2g can be supplied to the air intake port 2f side, the lack of cooling on the air intake port 2f side is solved. Can do.

  FIGS. 13 and 14 show a fifth embodiment of the present invention. FIG. 13 is a side sectional view of a showcase, and FIG. 14 is a block diagram showing a control system. In addition, the same code | symbol is attached | subjected and shown to the component equivalent to 1st and 2nd embodiment.

  The showcase of the present embodiment includes a wind speed sensor 13 that detects the wind speed of the air flowing through the showcase body 1, and a control unit 14 that controls the amount of heat generated by the dew condensation prevention heater 7 based on the detection speed of the wind speed sensor 13. As in the second embodiment, an upper space 8 is provided above the upper surface opening of the showcase body 1.

  The wind speed sensor 13 is provided in the front side ventilation path 2 (below the transparent plates 1b and 2d), and detects the wind speed of the air sucked into the front side ventilation path 2.

  The control unit 14 is constituted by a microcomputer and is connected to the heater 7 and the wind speed sensor 13. That is, when the wind speed detected by the wind speed sensor 13 is equal to or lower than a predetermined wind speed, the control unit 14 reduces the heat generation amount of the heater 7 or stops the heater 7. The operation of the control unit 14 is almost the same as that in the third embodiment, and thus the flowchart is omitted.

  According to the showcase of this embodiment, for example, when the cooler 3 is clogged due to frost formation and the wind speed of the air flowing through the showcase main body 1 is reduced, the heat load by the heater 7 is reduced. Therefore, similarly to the above-described embodiment, it is possible to prevent the cooling capacity from being lowered. Further, as in the above-described embodiment, air with a small temperature rise discharged from the second air discharge port 2g can be supplied to the air intake port 2f side, thereby eliminating the lack of cooling on the air intake port 2f side. Can do.

  15 and 16 show a sixth embodiment of the present invention. FIG. 15 is a side sectional view of a showcase, and FIG. 16 is a block diagram showing a control system. In addition, the same code | symbol is attached | subjected and shown to the component equivalent to 1st and 2nd embodiment.

  The showcase of this embodiment includes a pressure sensor 15 that detects the condensation pressure of the condenser 6, and a control unit 16 that controls the amount of heat generated by the dew condensation prevention heater 7 based on the detected pressure of the pressure sensor 15. Similar to the second embodiment, an upper space 8 is provided above the upper surface opening of the showcase body 1.

  The pressure sensor 15 is attached to the condenser 6 and detects the pressure of the refrigerant in the condenser 6.

  The control unit 16 is configured by a microcomputer and is connected to the heater 7 and the pressure sensor 15. That is, when the detected pressure of the pressure sensor 15 is equal to or higher than a predetermined pressure, the control unit 16 reduces the amount of heat generated by the heater 7 or stops the heater 7. Since the operation of the control unit 16 is substantially the same as that of the third embodiment, the flowchart is omitted.

  According to the showcase of the present embodiment, when the condensing pressure of the condenser 6 increases during a high load, the heat load due to the heater 7 can be reduced. Can be prevented. Further, similarly to the above embodiment, since the air with a small temperature rise discharged from the second air discharge port 2g can be supplied to the air intake port 2f side, the lack of cooling on the air intake port 2f side is solved. Can do.

  FIGS. 17 to 19 show a seventh embodiment of the present invention. FIG. 17 is a side sectional view of a showcase, FIG. 18 is a block diagram showing a control system, and FIG. 19 is a flowchart showing the operation of the control unit. is there. In addition, the same code | symbol is attached | subjected and shown to the component equivalent to 1st and 2nd embodiment.

  The showcase of the present embodiment includes a control unit 17 that controls the amount of heat generated by the dew condensation prevention heater 7 based on the on / off signal of the compressor 5, and similarly to the second embodiment, the upper surface of the showcase body 1. An upper space 8 is provided above the opening.

  The control unit 17 is constituted by a microcomputer and is connected to the heater 7 and the compressor drive circuit 5a.

  That is, as shown in the flowchart of FIG. 19, when the controller 17 detects the ON signal of the compressor drive circuit 5a (S10), the controller 17 drives the heater 7 with the first energization amount (S11) and turns the blower 4 on. When driving at the first rotational speed (S12) and detecting an off signal of the compressor drive circuit 5a (S10), the heater 7 is driven with a second energization amount smaller than the first energization amount (S13). The blower 4 is driven at a second rotational speed smaller than the first rotational speed (S14).

  As described above, according to the showcase of the present embodiment, when the compressor 5 is stopped, the amount of heat generated by the heater 7 is reduced, so that the cooler 3 is not cooling the air when the compressor 5 is stopped. The heat load by the heater 7 can be reduced, and the cooling capacity can be prevented from being lowered without increasing the wind speed of the air discharged from the first air discharge port 2e. In this case, when the compressor 5 is stopped, the air volume of the blower 4 is made smaller than that when the compressor 5 is operated. Therefore, the intrusion amount of outside air when the compressor 5 is stopped can be reduced, and the cooling capacity It is effective in preventing the decrease of Further, as in the above-described embodiment, air with a small temperature rise discharged from the second air discharge port 2g can be supplied to the air intake port 2f side, thereby eliminating the lack of cooling on the air intake port 2f side. Can do.

  In the above embodiment, the heat generation amount of the heater 7 is reduced when the compressor 5 is stopped. However, the heater 7 may be stopped.

  In the third to seventh embodiments, the second air discharge port 2g is shown. However, the second air discharge port 2g may not be provided. Further, in the third to seventh embodiments, the closed type having the upper space 8 above the showcase body 1 is shown, but the open type showcase shown in the first embodiment is also possible. Good.

1 is an overall perspective view of a showcase showing a first embodiment of the present invention. Side cross-sectional view of showcase Side surface sectional drawing of the showcase which shows the modification of 1st Embodiment The whole perspective view of the showcase which shows the 2nd Embodiment of this invention Side cross-sectional view of showcase Side surface sectional drawing of the showcase which shows the modification of 2nd Embodiment Side surface sectional drawing of the showcase which shows the modification of 2nd other embodiment. Side surface sectional drawing of the showcase which shows the 3rd Embodiment of this invention Block diagram showing the control system Flow chart showing operation of control unit Side surface sectional drawing of the showcase which shows the 4th Embodiment of this invention Block diagram showing the control system Side surface sectional drawing of the showcase which shows the 5th Embodiment of this invention Block diagram showing the control system Side surface sectional drawing of the showcase which shows the 6th Embodiment of this invention Block diagram showing the control system Side surface sectional drawing of the showcase which shows the 7th Embodiment of this invention Block diagram showing the control system Flow chart showing operation of control unit

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Showcase main body, 2 ... Ventilation path, 3 ... Cooler, 4 ... Blower, 5 ... Compressor, 6 ... Condenser, 7 ... Heater, 8 ... Upper space part, 8d ... Sliding door, 9 ... Temperature sensor, 10 DESCRIPTION OF SYMBOLS ... Control part, 11 ... Outside temperature sensor, 12 ... Control part, 13 ... Wind speed sensor, 14 ... Control part, 15 ... Pressure sensor, 16, 17 ... Control part.

Claims (10)

A showcase body having an open upper surface, a ventilation path formed along a front side, a bottom side, and a rear side in the showcase body, and a cooler and a blower disposed in the ventilation path. The air sucked into the ventilation path from one end in the front-rear direction of the upper surface opening of the top is cooled by a cooler and discharged along the upper surface opening from the other end in the front-rear direction of the upper surface opening of the showcase body. In case
A first air discharge port for discharging air from the upper end side of the ventilation path is provided on the other end side in the front-rear direction of the upper surface opening of the showcase body,
A showcase characterized in that a second air discharge port for discharging air into the showcase body is provided on at least one of the bottom side and the back side of the ventilation path. Showcase body having an open top surface, a ventilation path formed along the front side, bottom surface side and back side in the showcase body, a cooler and a fan disposed in the ventilation path, and a suction side of the ventilation path A dew condensation prevention heater arranged in the front and rear direction of the top opening of the showcase body. In the showcase designed to discharge along the top opening from the other end side,
Temperature detecting means for detecting the temperature of air in the showcase body;
A showcase comprising: control means for reducing the amount of heat generated by the heater or stopping the heater when the temperature detected by the temperature detecting means exceeds a predetermined temperature. Showcase body having an open top surface, a ventilation path formed along the front side, bottom surface side and back side in the showcase body, a cooler and a fan disposed in the ventilation path, and a suction side of the ventilation path A dew condensation prevention heater arranged in the front and rear direction of the top opening of the showcase body. In the showcase designed to discharge along the top opening from the other end side,
Temperature detecting means for detecting the temperature outside the showcase body;
A showcase comprising: control means for reducing the amount of heat generated by the heater or stopping the heater when the temperature detected by the temperature detecting means exceeds a predetermined temperature. Showcase body having an open top surface, a ventilation path formed along the front side, bottom surface side and back side in the showcase body, a cooler and a fan disposed in the ventilation path, and a suction side of the ventilation path A dew condensation prevention heater arranged in the front and rear direction of the top opening of the showcase body. In the showcase designed to discharge along the top opening from the other end side,
Wind speed detecting means for detecting the wind speed of the air flowing through the showcase body by the blower;
A showcase comprising: control means for reducing the amount of heat generated by the heater or stopping the heater when the wind speed detected by the wind speed detecting means falls below a predetermined wind speed. Showcase body with an open top surface, a ventilation path formed along the front side, bottom surface side and back side in the showcase body, a cooler and a fan arranged in the ventilation path, and connected to the cooler The air that has been sucked into the ventilation path from one end in the front-rear direction of the upper surface opening of the showcase body is provided with a condenser that condenses the refrigerant in the refrigerant circuit and a heater for preventing condensation that is disposed on the suction side of the ventilation path. In a showcase that is cooled by a cooler and discharged along the upper surface opening from the other end in the front-rear direction of the upper surface opening of the showcase body,
Pressure detecting means for detecting the condensing pressure of the condenser;
And a control means for reducing the amount of heat generated by the heater or stopping the heater when the detected pressure of the pressure detecting means exceeds a predetermined pressure. Showcase body with an open top surface, a ventilation path formed along the front side, bottom surface side and back side in the showcase body, a cooler and a fan arranged in the ventilation path, and connected to the cooler Air that has been sucked into the ventilation path from one end in the front-rear direction of the upper surface opening of the showcase body, and a compressor that circulates the refrigerant in the refrigerant circuit and a heater for preventing condensation that is disposed on the suction side of the ventilation path In a showcase that is cooled by a cooler and discharged along the upper surface opening from the other end in the front-rear direction of the upper surface opening of the showcase body,
A showcase comprising control means for reducing the amount of heat generated by the heater or stopping the heater when the compressor is stopped. The showcase according to claim 6, further comprising a control unit configured to make the air volume of the blower smaller than when the compressor is in operation when the compressor is stopped. A first air discharge port for discharging air from the upper end side of the ventilation path is provided on the other end side in the front-rear direction of the upper surface opening of the showcase body,
The second air discharge port for discharging air into the showcase body is provided on at least one of the bottom side and the back side of the ventilation path. Showcase. An upper space portion covering the upper surface opening of the showcase body;
The showcase according to claim 1, further comprising: a transparent opening / closing member that opens and closes a predetermined surface of the upper space. The upper part of the suction side ventilation path on one end side or the other end side in the front-rear direction of the showcase body is formed of a transparent plate. Showcase described.

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