JPH01208691A - Open showcase - Google Patents

Abstract

PURPOSE:To contrive the saving of switching operation, by a method wherein the pull-down type night cover of a showcase is provided with a mark while an illuminating lamp is put ON/OFF automatically by the existence of the detection of the mark. CONSTITUTION:A plurality of illuminating lamps 2 and a pull-down type night cover 3 are provided in the main body 1 of a showcase while a mark 4 is provided at the inner end of the cover. Under a condition that the night cover 3 is pulled down, the mark 4 is detected by a photoelectric sensor 5 whereby the power conduction of an illuminating circuit is intercepted and the illuminating lamps 2 are put OFF. When the night cover 3 is pulled up, the photoelectric sensor 5 can not detect the mark 4 whereby the illuminating circuit is conducted and the illuminating lamps 2 are lighted.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an improvement of an open showcase having a lighting lamp inside the refrigerator and a pull-down night cover at the front opening.

<Conventional technology> In conventional open showcases, the lighting inside the refrigerator is usually turned on and off by manually operating a switch installed in the case, or by operating the knife switch located at the base all at once. It is done by doing.

On the other hand, in addition to the above-mentioned manual operation, there has also been proposed a method in which a timer is connected to the prototype source so that the lighting can be turned on and off automatically at set times.

FIGS. 4 and 5 show an example of the lighting circuit 8.
A disc 9a that rotates once a day by a motor 9d in an electric circuit to
Connect a 24-hour timer 9 consisting of a rotary switch 9C that opens and closes the contacts by rotating with the kick of the switch b, and at the set lighting time, kick the rotary switch 9c with the claw 9b to close the contacts and energize the lighting circuit 8. At the set time, the claw 9b opens the contact of the rotary switch 9C, cutting off the power to the lighting circuit 8 and turning off the lighting, thereby automatically turning off the lighting. It is designed to turn lights on and off.

<Problem to be solved by the invention> In the case where the lighting lamps are automatically turned on and off using a timer as described above, when changing the on/off time, the set time of the timer is The time must be changed, and setting the time for each case is troublesome, so it is usually not done.
This caused the problem that the lights could not be turned on and off individually in each case, as they were controlled collectively.

The aim of this invention is to solve the above problem, and by using the pull-down night cover provided at the front opening of the case, the lighting can be turned on and off automatically for each case. Our goal is to provide an open showcase where we can.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides an open showcase that has illumination lights inside the refrigerator and a pull-down night cover at the front opening. The present invention is characterized in that a mark is provided on the lamp, and means is provided for automatically turning on and off the illumination lamp depending on whether or not the mark is detected.

For open showcases with a pull-down night cover on the front opening, the night cover is pulled down at the beginning of use, and pulled down to cover the front opening of the case at the end of use. By configuring as described above, the mark provided at the appropriate place on the night cover is detected, and depending on whether the mark is detected, the lighting inside the refrigerator is automatically turned on or off. You can turn off the light when you pull it down.

<Example> An example of the present invention will be described below based on FIGS. 1 to 3.

In the figure, l is the main body of the open showcase, 2 is a plurality of lighting lights installed inside the case, and 3 is a pull-down night cover installed above the opening to cover the front opening of the case body l. By holding the tip of the cover and pulling it down and hooking the hook provided at the tip of the cover to the stopper provided at the bottom of the case body l, the opening can be covered as shown in Figure 1, and the hook can also be attached to the stopper. It has a wire groove that is automatically wound onto a reel and pulled up when it is removed.

4 is a mark provided on the night cover 3, and in this example, it is provided on the inner end of the cover 3. Reference numeral 5 denotes a photoelectric sensor installed at a position where the mark 4 can be detected, and depending on whether or not the mark 4 is detected, the illumination circuit of the illumination lamp 2 is transmitted via an amplifier circuit 6 and a drive circuit 7 having contacts 7a as shown in FIG. Connect the electric circuit to 8.

The circuit is configured so that it can be shut off.

In the above configuration, when the night cover 3 is pulled down as shown in FIG. 1, the mark 4 is at a position to be detected by the photoelectric sensor 5 as shown in FIG. The contact 7a is opened via the drive circuit 7, cutting off the power to the lighting circuit 8, and the lighting lamp 2 is turned off.

On the other hand, if the night cover 3 is pulled up, the photoelectric sensor 5 will not be able to detect the mark 4.
The contact 7a of the drive circuit 7 is closed, the lighting circuit 8 is energized, and the lighting lamp 2 is turned on.

In this way, the illuminating light 2 can be automatically turned on and off by pulling down and pulling up the night cover 3.

Therefore, there is no need to operate the on/off switch for the illumination lights at the beginning and end of use of the open showcase, and the illumination lights can be automatically turned on and off for each case.

In the above example, the illuminating light 2 is turned off when the mark 4 is detected, but it can also be formed so that it is turned on when the night cover is pulled up and the mark is detected.

<Effects of the invention> As explained above, according to the invention, the illumination light can be turned on and off automatically by pulling up or pulling down the night cover.
Since it can be turned off, there is no need to turn on and off switches such as lights at the beginning and end of use, which can reduce bone strength.

In addition, there is no need to bother with changing the on/off time as would be the case with a timer, and the lighting can be turned on and off for each case individually.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view of an oven showcase showing an embodiment of the present invention, FIG. 2 is a partial perspective view of Y, and FIG. 3 is an electric circuit diagram thereof. Fig. 4 is a configuration diagram of a conventionally used timer, and Fig. 5 is a block diagram of a conventionally used timer.
It is a circuit diagram using the timer. In the figure, 1 is the open showcase body, 2 is the lighting lamp,
3 is a night cover, 4 is a mark. 5 is a photoelectric switch, 6 is an amplifier circuit, 7 is a drive circuit,
7a is a contact, and 8 is a lighting circuit. Figure 1 Figure 211 Figure 5

Claims (1)

[Scope of Claims] An open showcase having an illumination light inside the refrigerator and a pull-down night cover at the front opening, wherein a mark is provided at an appropriate position on the night cover, and the illumination is controlled depending on whether or not the mark is detected. An open showcase characterized by having a means for automatically turning lights on and off.