JP2000258052A - Illumination dimmer for refrigeration and cold storage open showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an illumination dimmer for a refrigeration and cold storage open showcase which can automatically and always set the proper illuminance of respective illumination lamps that are installed inside the showcase on the basis of the illuminance inside a store on all of a plurality of refrigeration and cold storage open showcases that are set in the store. SOLUTION: In a plurality of refrigeration and cold storage open showcases which are installed in a store, and which are provided with a plurality of illumination lamps 3, 5, and 12 that illuminate each of a plurality of stages of showcases that are disposed inside a refrigerator, all of inverter stabilizers 14 of each of the illumination lamps 3, 5, and 12 are connected to a central control device 15, and the outputs of the inverter stabilizers 14 can be variable by the outputs from the central control device 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting / dimming device for a freezer / refrigerated open showcase installed in a store.

[0002]

2. Description of the Related Art For example, a plurality of freezer / refrigerated open showcases are installed in a supermarket or the like.
As shown in the figure, the showcase main body 1 having an opening for taking out a product on the front surface is constituted by a heat insulating wall, and the inside of the showcase main body 1 is partitioned into a product storage 18 and a cool air circulation duct 19 by a duct plate 17, and A plurality of display shelves 6, 7, 8, 9, and 10 are arranged in the storage 18.

In such a freezer and refrigerated open showcase, a canopy lighting lamp 3 is installed as a lighting lamp for illuminating the inside of the refrigerator at the lower end of a canopy portion 2 protruding forward from a ceiling portion 4 of the showcase body 1. At the lower part of the front part of the ceiling part 4, a ceiling lighting lamp 5 is installed,
In addition, illumination lamps 12 for the shelves are also provided at the lower end of the display shelves 6 to 9, respectively.

Then, the uppermost display shelf 6 is illuminated by the canopy illumination lamps 3 and the ceiling illumination lamps 5, and the other middle display shelves 7 to 9 and the lowermost display shelf 10 are displayed on each display shelf. Illumination is performed by illumination lamps 12 for shelves installed at the lower portions of the tips 6 to 9.

The illumination lamps 3, 5, and 12 are, for example, straight fluorescent lamps of the same power and are connected to an inverter ballast 11 installed in the canopy unit 2 and are turned on by the inverter ballast 11. A dimmer switch (not shown) is attached to the inverter ballast 11, and the illuminance of all the illumination lamps 3, 5, and 12 is manually adjusted by the output from the dimmer switch.

[0006]

SUMMARY OF THE INVENTION Illumination lamps 3, 5, 1
In the dimming of 2, the dimming switch attached to the inverter ballast 11 installed in each freezing and refrigeration open showcase is determined by a worker such as a store clerk who judges the illuminance in the store as a whole with a sense. The operation is performed individually for each of a plurality of freezing and refrigerated open showcases installed in the store, which requires time and effort. Furthermore, since the illuminance of the illumination lamps installed in the showcase is determined based on human judgment, an appropriate illuminance in the refrigerator may not be obtained.

[0007] An object of the present invention is to solve the inconvenience of the above-mentioned conventional example, and to reduce the illuminance of the illumination lamps installed in the showcase for all of the plurality of open and refrigerated open showcases installed in the store. It is an object of the present invention to provide a lighting and dimming device for a freezer and refrigerated open showcase which can be automatically and always set to an appropriate one based on the illuminance in the inside.

[0008]

In order to achieve the above object, the present invention firstly comprises a plurality of illumination lamps installed in a store and illuminating display shelves arranged in a plurality of stages in a store. In the refrigerated open showcase provided, connect all ballasts for each lighting lamp to the centralized control device,
Since the output of the ballast can be changed by the output from the centralized control device, the output of the ballast can be changed by the operation of the centralized control device. Even if the same power is used for all the lighting lamps, the illuminance of each lighting lamp can be automatically changed, and the trouble of manually setting the illuminance of each lighting lamp can be omitted.

Second, the ballast has a standard output of 80.
By setting the percentage to 125%, even if the output is increased, the power consumption does not extremely increase and the life of the illumination lamp does not decrease.

Third, since the ballast is an inverter ballast, the lighting lamp can be lit brightly with almost the same power consumption as when a normal ballast is used at a normal output, thereby increasing power consumption. The minutes can be extremely reduced.

Fourth, an illuminance sensor is installed in the store,
By controlling the output of the ballast based on the measurement value detected by the illuminance sensor, for each showcase installed in the store, the optimum illuminance that matches the overall illuminance in the store is calculated. Since the output from the ballast is automatically adjusted for each lighting lamp so as to obtain the optimum illuminance, each section in the showcase can be illuminated with the optimum illuminance without fail.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a control block diagram of a lighting and dimming device for a refrigerated open showcase of the present invention. The entire configuration of the refrigerated open showcase in which the present invention is implemented has already been described with reference to FIG. A detailed description of the above will be omitted.

Also in the present invention, a plurality of display shelves 6 are provided in a product storage 18 formed in the showcase main body 1.
7, 8, 9 and 10 are provided. As a lighting lamp for illuminating the inside of the refrigerator, a lighting lamp 3 for a canopy is provided at a lower end of a canopy portion 2 protruding forward from a ceiling portion 4 of the showcase body 1. The ceiling lighting lamps 5 are installed at the lower part on the front side of the ceiling 4, and the lighting lamps 12 for the shelves are also installed at the lower ends of the display shelves 6 to 9.

The illumination lamps 3, 5, 12
Is composed of, for example, a straight fluorescent lamp having the same power and is connected to an inverter ballast 11 installed in the canopy unit 2. The inverter ballast 11 is connected to a commercial AC 200 V power supply 20. Here, the inverter ballast 11 rectifies a commercial AC 200 V current and converts it into a DC power supply.
12.

Each of the lighting lamps 3, 5, and 12 is a ballast whose output can be varied so that the output is 80% of the standard output.
An inverter ballast 14 set at 125% is connected. This inverter ballast 14 is, as shown in FIG.
It is composed of a smoothing circuit 21 and an oscillation circuit 22,
The smoothing circuit 21 employs a complete smoothing circuit capable of rectifying an alternating current from the AC 200 V power supply 20 and applying a current with little ripple to the oscillation circuit 22.

In this manner, for each of the plurality of freezer / refrigerated open showcases installed in the store, the inverter ballast 14
Are connected to the inverter ballast 11.

On the other hand, an illuminance sensor 16 for detecting illuminance in the store is installed at an arbitrary location in the store, and the illuminance sensor 16 and the plurality of inverter ballasts 11 are installed in, for example, an office in the store. It is connected to a central management device 15 using a microcomputer or the like.

Next, a method of dimming the illuminance in each freezer and refrigerated open showcase will be described with reference to the flowchart of FIG. When the measured value of the illuminance in the store measured by the illuminance sensor 16 is output to the centralized control device 15, the centralized control device 15 reads the measured value [Step (A)] and freezes based on the measured value. The optimum illuminance of the refrigerated open showcase is calculated [step (b)].

Next, the measured value is compared with the optimum illuminance (step (c)). If the measured value is larger than the optimum illuminance,
A signal is output from the central control device 15 to the inverter ballast 11 so as to lower the output of the inverter ballast 14 (step (d)). As a result, the output of each inverter ballast 14 of the illumination lamps 3, 5, 12 connected to the inverter ballast 11 becomes low,
The illuminance of 5, 12 decreases. That is, if the inside of the store is very bright, as a result, the inside of the showcase also becomes bright, so that the illuminance of the illumination lamps 3, 5, and 12 in the showcase is reduced, so that the illuminance in the showcase approaches the optimum illuminance.

On the other hand, as a result of comparing the measured value with the optimum illuminance [step (c)], if the measured value is smaller than the optimum illuminance, the central control device 15 sends the signal to the inverter ballast 11 and the inverter ballast 11 A signal is output so as to increase the output [step (e)]. Thereby, the lighting lamps 3, 5, 5 connected to the inverter ballast 11
The output of each of the twelve inverter ballasts 14 increases, and the illuminance of the illumination lamps 3, 5, and 12 increases. That is, when the store is dark, the lighting lamps 3, 5, 1 in the showcase are used.
By raising the illuminance of 2, the illuminance in the showcase is made closer to the optimal illuminance.

The adjustment of the illuminance is performed by using the inverter ballast 14 so that the illumination lamps 3, 5, 12
Since there is no pause in the current waveform, the efficiency of the light output with respect to the lamp current can be improved, the substantial ballast output can be made higher than the standard output, and 80 to 125% of the standard output can be obtained. It can be changed within the range.

[0022]

As described above, the lighting and dimming device for the freezer and refrigerated open showcase of the present invention is firstly provided with a plurality of display shelves installed in a store and arranged in a plurality of stages in a store. In a refrigerated open showcase equipped with multiple lighting lamps, the central control device can automatically change the output of the ballast for each lighting lamp. Even if the same power is used for all the installed lighting lamps, the illuminance of each lighting lamp can be automatically changed, and the labor of manually setting the illuminance of each lighting lamp for each showcase can be omitted.

Second, the ballast has a standard output of 80.
By setting the percentage to 125%, even if the output is increased, the power consumption does not extremely increase and the life of the illumination lamp does not decrease.

Third, since the ballast is an inverter ballast, the lighting lamp can be lit brightly with almost the same power consumption as when a normal ballast is used at a normal output, thereby increasing power consumption. The minutes can be extremely reduced.

Fourth, an illuminance sensor is installed in the store,
By controlling the output of the ballast based on the measurement value detected by the illuminance sensor, for each showcase installed in the store, the optimum illuminance that matches the overall illuminance in the store is calculated. Since the output from the ballast is automatically adjusted for each lighting lamp so as to obtain the optimum illuminance, each section in the showcase can be illuminated with the optimum illuminance without fail.

[Brief description of the drawings]

FIG. 1 is a control block diagram showing an embodiment of an illumination dimmer for a refrigerator-freezer open showcase of the present invention.

FIG. 2 is a flowchart showing a dimming operation of the illumination dimming device for a refrigerator-freezer open showcase of the present invention.

FIG. 3 is a vertical sectional side view of a freezing and refrigeration open showcase.

FIG. 4 is a circuit diagram showing an example of an inverter ballast.

[Explanation of symbols]

1. Showcase body, 2. Canopy part,
3 ... lighting lamp, 4 ... ceiling part, 5 ... lighting lamp, 6, 7, 8, 9, 10 ... display shelf, 11 ... inverter ballast, 12 ... lighting lamp, 14 ...
Inverter ballast, 15: Central control device, 16: Illuminance sensor, 17: Duct plate, 18: Commodity storage, 19: Cold air circulation duct, 20: AC power supply,
21: smoothing circuit, 22: oscillation circuit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3B110 AA10 BA05 HA08 HA24 JA00 3L045 AA02 BA01 CA02 DA02 EA01 GA07 HA01 LA01 MA10 NA19 PA03 PA04 PA06

Claims (4)

[Claims] 1. A refrigerator-refrigerated open showcase provided with a plurality of lighting lamps for illuminating each of a plurality of display shelves arranged in a store and a plurality of lighting shelves in a store. An illumination dimmer for a freezer and refrigerated open showcase, wherein all ballasts are connected, and the output of the ballast is made variable by an output from the central control device. 2. The ballast has an output of 80% to 1% of a standard output.
The lighting and dimming device for a freezer and refrigerated open showcase according to claim 1, wherein the setting is 25%. 3. The lighting and dimming device for a freezer and refrigerated open showcase according to claim 1, wherein the ballast is an inverter ballast. 4. An illuminance sensor is installed in a store, and an output of a ballast is controlled based on an illuminance value detected by the illuminance sensor. A lighting dimmer for a frozen and refrigerated open showcase as described in the above.