JPH0317190Y2 - - Google Patents

Description

[Detailed description of the invention] This invention makes it possible to install a roll-in night cover in a cold air circulation type open shower case that blows out a two-layer air curtain, and also reduces the effect of the air curtain. Concerning an open case that prevents this from happening.

FIG. 1 shows a cold air circulation type open show case that blows out two layers of air curtain from the front opening. In Fig. 1, 1 is an opening 1a on the front side.
A main body case having an outer box 2 and an inner box 3,
A cold air circulation ventilation path 4 is provided between the outer box 2 and the inner box 3.
Further, an outside air ventilation path 5 is formed on the outside of the outer box. The cold air circulation ventilation path 4 has an air outlet 4b facing the opening 1a and having an air regulating fluid 4a and an inlet 4c facing each other, and has a cooler 6 inside.
and a blower 7. The outside air ventilation passage 5 has an air outlet 5 having an air regulating fluid 5a outside the outlet 4b.
b, and a suction port 5c that opens outward, and is equipped with a blower 8 inside. The inside of the inner box 3 forms an interior 9 for displaying products. A storage case 12 for storing a roll-up type night cover 11 is installed outside the air outlet 4b.

In the above-described configuration, the cold air curtain 1 is created in the opening 1a by the blower 7, which circulates through the cold air circulation passage 4 through the cooler 6 and sucks in the air from the outlet 4b to the outlet 4c.
4 is formed, and the inside of the refrigerator 9 is cooled and kept cold. In addition, an outside air curtain 15 is formed outside the cold air curtain 14 by the outside air sucked in from the suction port 5c by the blower 8 and blown out from the outlet. The cold air curtain and the outside air curtain formed in these two layers effectively isolate the inside and outside of the refrigerator and cool and keep the interior 9 of the refrigerator cold. On the other hand, during a standby period such as at night, the night cover 11 rolled up inside the storage case 12 is pulled down and the opening 1a is closed on the outside of the cold air curtain 14. Thermal isolation between the inside and outside of the refrigerator is improved by the night cover 11, and the inside of the refrigerator 9 is efficiently kept cool by short-time operation of the cooler 6.

However, the above-mentioned open-show case has a drawback that the outside air curtain 15 is disturbed by the storage case located below the outlet 5b, and the cooling effect of the refrigerator interior 9 is diminished.

In order to eliminate the above drawbacks, when the storage case 12 is installed outside the air outlet 5b, the opening 1
When a is closed with the night cover 11, the air outlet 5b
Since even the outside air blown out from the cooling air circulation path 4 is sucked into the cold air circulation ventilation path 4, the cold storage performance is significantly reduced, making it impractical. In addition, when a removable panel-shaped night cover that does not require a storage case is used, it is troublesome to attach and remove the night cover, and it is inconvenient that a storage space must be secured when not in use.

In view of the above-mentioned circumstances, the purpose of this invention is to provide a cold air circulation type open shower case that is equipped with a roll-up night cover that is convenient to use and that efficiently cools and retains the inside of the refrigerator.

According to this invention, a main body case having an opening on one side is provided with a cold air circulation ventilation passage having a cooler and a blower, and an outside air ventilation passage having a blower, and a cold air curtain is provided in the opening. In a cold air circulation type open show case that blows outside air inward and outside, respectively, a lighting lamp is provided that is turned on during sales and turned off when sales are on standby such as at night. This is achieved by configuring the ventilation path so that the blower is stopped.

Hereinafter, embodiments of this invention will be described based on the drawings. In the figure, parts common or identical to those in FIG. 1 are designated by the same reference numerals.

In FIG. 2, reference numeral 12 denotes a storage case in which the night cover 11 is rolled up and stored, and is installed outside the air outlet 5b. Reference numeral 17 is a fluorescent light that illuminates the open show case, which is turned on during sales and turned off when waiting for sales, such as at night. The fluorescent lamp 17 and the blower motor 8a of the blower 8 are connected by an electric circuit shown in FIG. In Figure 3,
7a is a blower motor for the blower 7, 18 is a switch for the fluorescent lamp 17, 19 is a relay, and 19a is a contact point of the relay 19.

In the above-described configuration, the night cover 11 is rolled up inside the storage case 12 while the open show case is being sold. Further, the switch 18 is turned on, the fluorescent lamp 17 is turned on, and the relay 19 is energized. Then, the contact 19a closes and the blower motor 8
a rotates. By operating the blower 8, outside air is blown out from the outlet 5b to form an undisturbed outside air curtain 15, and the inside of the refrigerator 9 is efficiently cooled and kept cold. Next, when waiting for sales, night cover 11
is pulled out from the storage case 12, and its tip is locked to the upper edge of the opening of the main body case 1. As a result, the opening 1a is closed and the inside and outside of the refrigerator are cut off. The switch 18 is turned off, the fluorescent lamp 17 is turned off, and the relay 19 is de-energized. Contact 19a opens and blower motor 8a stops. Blower 8
Since the operation of the refrigerator is stopped, outside air does not flow into the cold air circulation passage 4, and the interior of the refrigerator 9 is efficiently kept cool.

As mentioned above, according to this invention, a lighting lamp is provided that is turned on during sales and turned off when waiting for sales, and the blower in the outside air ventilation path is stopped when the lamp goes out, so the blower It is now possible to ensure that the blower is stopped because it follows the operation of the fluorescent light switch, and by checking that the fluorescent light is off, it is easy to confirm that the blower has stopped. In the case of modification as in this invention, modification can be done easily and inexpensively by simply adding a relay or changing the wiring. A roll-in type night cover is installed together with the storage case, and an open storage case can be provided in which the inside of the refrigerator is efficiently cooled and kept cold.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of a conventional open-shoulder case, Figures 2 and 3 are views of an open-shoulder case showing an embodiment of this invention, Figure 2 is a cross-sectional view, and Figure 3 is an electrical circuit diagram. be. DESCRIPTION OF SYMBOLS 1... Main body case, 1a... Opening, 4... Cold air circulation duct, 5... Outside air ventilation duct, 6... Cooler, 7, 8... Blower, 7a, 8a... Blower motor, 14 ...Cold air curtain, 15...
Outside air curtain, 17... fluorescent lights.

Claims (1)

[Scope of utility model registration request] A main body case having an opening on one side is provided with a cold air circulation ventilation passage having a cooler and a blower, and an outside air ventilation passage having a blower, and the cold air curtain and the outside air curtain are arranged in the opening on the inside and outside, respectively. In a cool air circulation type open show case that blows out air, a night cover for opening and closing the opening is provided on the outside of the outlet that blows out the outside air curtain, and a lighting lamp that is turned on during sales and turned off during sales standby such as at night. A cold air circulation type open show case, characterized in that the air blower in the outside air ventilation path is stopped in response to the turning off of the illumination light.