JPH0442701Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a low-temperature case for storing frozen products, etc.

(Prior Art) Conventionally, in a low-temperature case that has a guide rail for an opening/closing sliding door on the upper part of the case body and a lighting cover that covers the illumination lamp inside the case body, an electric heater is attached to the lower side of the guide rail. Showcase is known.

(Problems to be solved by the invention) In the conventional low-temperature show case, the electric heater attached to the guide rail prevents condensation from forming on the guide rail, and the condensed water falls into the case body. However, it is necessary to constantly supply electricity to the electric heater during operation, which is disadvantageous in terms of energy conservation.

(Purpose of the invention) In view of the above-mentioned conventional problems, the present invention attempts to provide a low-temperature show case that can prevent dew condensation on the guide rail without constantly energizing the electric heater.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes an opening/closing sliding door provided at the upper part of the case body, a guide rail for the opening/closing sliding door, and an electric heater for heating the guide rail. , in a low-temperature case that includes an illumination lamp installed in a case body and a illumination cover that covers the illumination lamp, the illumination lamp and the illumination cover are disposed below the guide rail, and the illumination cover has a A through hole is provided that communicates the lower surface side of the guide rail with the inside of the lighting cover.

(Function) According to the low-temperature show case of the present invention, when the lighting lamp is turned on, the heat generated from the lighting lamp is released to the lower surface side of the guide rail through the through hole of the lighting cover, so that the guide rail is heated. Condensation is prevented, and the heat dissipation prevents heat from staying inside the lighting cover. Further, when the illumination lamp is turned off, the guide rail is heated by driving the electric heater.

(Embodiment) Figures 1 to 4 show an embodiment of the present invention, in which 1 is a low-temperature case body formed of a heat insulator with an open upper part, for example, a frozen case body for storing frozen products ( (hereinafter referred to as the case body), 2 is a machine room provided below the case body 1 in which a condenser 2a and a compressor 2b are installed, 3 is an upper insulator that closes the upper part of the back side of the case body 1, and 4 is a a top plate 5 that covers the upper part of the upper heat insulator 3;
a and 5b are sliding doors that slide in the left and right directions on the front upper part of the case body 1, and 6 and 7 are sliding doors 5 that can be opened and closed.
The first and second guide rails a and 5b are made of a heat conductive member and extend in the left-right direction of the case body 1. 8 is a support member for the first guide rail 6, and 9 is a lighting fixture that illuminates the inside of the case body 1.

The first guide rail 6 includes a first horizontal piece 6a extending from the upper insulating body 3 side toward the front side of the case body 1, and a first horizontal piece 6a extending downward from one end of the first horizontal piece 6a on the upper insulating body 3 side. a first vertical piece 6 extending to
b, and a second horizontal piece 6c extending from the lower end of the first vertical piece 6b toward the front side of the case body 1.
, an inclined piece 6d extending diagonally downward from the tip of the second horizontal piece 6c toward the upper heat insulator 3, and a third inclined piece 6d extending toward the front side of the case body 1 from the lower end of the inclined piece 6d. A horizontal piece 6e and a second vertical piece 6f extending downward from the tip of the third horizontal piece 6e.
The first vertical piece 6b is screwed onto the top plate 4 via the support member 8, and the upper surfaces of the second horizontal piece 6c and the third horizontal piece 6e are Wheels 5c of each opening/closing sliding door 5a, 5b are mounted, and two electric heaters 10 are each attached to the lower surface. Further, the second guide rail 7 is provided along the upper end of the front wall 1a of the case body 1, and another wheel 5d is placed on the upper surface of the rail 7.

The lighting fixture 9 includes an illumination lamp, for example, a fluorescent lamp 11, extending in the left-right direction of the case body 1 below the first guide rail 6;
1 and a lighting cover 12 that covers the lamp. The lighting cover 12 includes an upper cover piece 12a that covers the upper part of the fluorescent lamp 11, and a lower cover piece 12b that covers the lower part of the fluorescent lamp 11.
and a connecting piece 12c screwed onto the lower end side of each piece 12a, 12b, and the back side of the second vertical piece 6f of the first guide rail 6 is screwed onto the front surface of the upper cover piece 12a. The first guide rail 6 covers the upper surface of the upper cover piece 12a. Further, a through hole 13 facing the lower surface of the first guide rail 6 is formed in the upper part of the upper cover piece 12a.

FIG. 4 shows an electric circuit for the electric heater 10 and the fluorescent lamp 11, where 14 is a commercial power source, 15 is a power switch, and 16 is a single-pole double-throw changeover switch. One contact 15a of the power switch 15 is connected to the commercial power supply 14, the other contact 15b is connected to the changeover contact 16a of the changeover switch 16,
One contact 16b of the changeover switch 16 is connected to the commercial power source 14 via the fluorescent lamp 11, and the other contact 16c is connected to the commercial power source 14 via the electric heater 10.

According to this embodiment, when selling frozen products, the power switch 15 is turned on and the switching contact 16a of the switching switch 16 is connected to one contact 16b. As a result, heat is generated in the fluorescent lamp 11, and the heat is transferred to the through hole 1 of the lighting cover 12.
The heat is radiated to the lower surface side of the first guide rail 6 through the guide rail 3, and the first guide rail 6 is further heated to evaporate the condensed water adhering to the guide rail 6. Further, due to the heat dissipation effect of the heat generated from the fluorescent lamp 11, thermal influence on the frozen products stored in the case body 1 is avoided.

Further, when frozen products are not sold, the switching contact 16a and the other contact 16c of the switching switch 16 are connected. As a result, the fluorescent lamp 11 is turned off, and the electric heater 10 is energized to heat the first guide rail 6 and evaporate the condensed water adhering to the guide rail 6.

(Effect of the invention) As explained above, according to the low-temperature show case of the invention, when the lighting lamp is turned on, the heat generated from the lighting lamp can prevent dew condensation on the guide rail. It is sufficient to drive the electric heater only when the lights are off, which is extremely advantageous in terms of energy saving. Furthermore, since heat does not accumulate inside the lighting cover due to the heat radiation, the amount of heat radiation from the lighting cover into the case body is reduced, and a decrease in the cooling effect within the case body can be reliably prevented.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of the present invention. Figure 1 is a sectional view showing a low-temperature case according to the present invention, and Figure 2 is a partially cutaway enlarged view showing the main parts of the present invention. 3 is a partially cutaway perspective view showing the main parts of the present invention, and FIG. 4 is an electric circuit diagram of an illumination lamp and an electric heater. In the figure, 1... Case body, 5a, 5b... Opening/closing sliding door, 6... Guide rail (first guide rail),
10... Electric heater, 11... Lighting lamp, 12
...Lighting cover, 13...Through hole.

Claims (1)

[Scope of claim for utility model registration] An opening/closing sliding door provided at the top of the case body, a guide rail for the opening/closing sliding door, an electric heater for heating the guide rail, an illumination lamp installed inside the case body, In a low-temperature show case equipped with a lighting cover that covers the lighting lamp, the lighting lamp and the lighting cover are disposed below the guide rail, and the lighting cover has communication between the bottom side of the guide rail and the inside of the lighting cover. A low-temperature case characterized by having a through hole.