JP2012102935A - Showcase control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a showcase control device which can prevent a lighting failure when illumination devices of a plurality of showcases are lit.SOLUTION: The showcase control device is constructed such that a plurality of showcases 1A to 1D are set as one group, the plurality of showcases 1A to 1D include illumination devices 10A to 10D, respectively, and the illumination devices 10A to 10D of the plurality of showcases 1A to 1D are lit by a common lighting command. The plurality of showcases 1A to 1D stores model codes, and includes storage parts 21a to 21d for storing the lighting delay time of the illumination devices 10A to 10D corresponding to the model codes, and control parts 2A to 2D for lighting the illumination devices 10A to 10D according to the lighting delay time when the lighting command is given.

Description

  The present invention relates to a showcase control device for controlling lighting devices respectively attached to a plurality of showcases.

  First, as an example of a showcase, FIG. 3 shows a configuration of a multi-stage open showcase of a two-layer air curtain system.

  In FIG. 3, 1 is a case main body of an open showcase which becomes a heat insulating housing, and an inner / outer double is provided on the outer periphery of the inner box 1b between the outer box 1a and the inner box 1b made of a steel plate with an open front. The cool air circulation ducts 2 and 3 are defined, and the air curtain outlets 2a and 3a are connected to the cool air circulation ducts 2 and 3 on the upper front side of the case body 1, and the air curtain suction port 2b is connected to the lower side. , 3b are opened. A cooler 4 and a fan 5 are provided in the cool air circulation duct (inner duct) 2 in the inner layer, and a fan 6 is provided in the cool air circulation duct (outer duct) 3 in the outer layer.

  Further, a honeycomb rectifying body 7 is provided at the air curtain outlets 2a and 3a, and two layers of cool air curtains are blown out on the front surface of the inside of the cabinet through the honeycomb rectifying body 7 during the cold insulation operation to keep the inside of the cabinet cool. In addition, 8 is a merchandise display shelf, 9 is a canopy portion provided on the upper front surface of the case body 1, and a lighting device 10 is provided on the lower surface of the merchandise display shelf 8, the canopy portion 9 and the ceiling portion of the inner box 1b. ing.

  During the cold holding operation of the open showcase having such a structure, cold air is circulated through the inner duct 2 and the outer duct 3, and two layers are formed on the front opening of the case body 1 through the honeycomb rectifier 7 of the air curtain outlets 2a and 3a. A cold air curtain is blown out to keep the product displayed on the product display shelf 8 in the cabinet cold.

  Usually, a plurality of such open showcases are connected, and the lighting device 10 and the like provided in each showcase is provided by a management device provided separately from each showcase according to the opening time and closing time. There is known a device that can be turned on and off all at once by a turn-on / off command (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 11-166780

  By the way, in the showcase, since the lighting devices 10 of a plurality of showcases are turned on all at once according to a command from the management device, the power supply voltage is momentarily reduced due to the inrush current when the lighting device 10 is turned on. Could cause lighting failure.

  The present invention has been made to solve the above problems, and an object thereof is to provide a lighting device for a showcase that can prevent a lighting failure when lighting the lighting devices of a plurality of showcases. .

  In order to achieve the above object, according to the present invention, a plurality of showcases are grouped into one group, each of the plurality of showcases is provided with a lighting device, and the plurality of showcases are controlled by a common lighting command. In the showcase control device configured to turn on the lighting device, each of the plurality of showcases includes a storage unit that stores a lighting delay time of the lighting device, and the lighting delay when the lighting command is given. And a controller that turns on the lighting device based on time.

  Specifically, each of the plurality of showcases includes a storage unit that stores a model code and stores a lighting delay time of the lighting device corresponding to the model code, and when the lighting command is given, The lighting device is turned on based on a lighting delay time of the lighting device corresponding to the model code.

  The lighting device may further include an input unit that can change a lighting delay time of the lighting device.

  According to the present invention, a plurality of showcases are made into one group, each of the plurality of showcases is provided with a lighting device, and the lighting devices of the plurality of showcases are turned on by a common lighting command. In the showcase control device, each of the plurality of showcases includes a storage unit that stores a lighting delay time of the lighting device, and the lighting device based on the lighting delay time when the lighting command is given. By providing the control unit for lighting, by varying the lighting delay time of the lighting device, it is possible to reduce the inrush current when the lighting device is turned on, and to suppress the power supply voltage drop of the showcase to be low .

  Specifically, each of the plurality of showcases stores a model code in advance, and includes a storage unit that stores a lighting delay time of the lighting device corresponding to the model code. When given, since the lighting device can be turned on based on the lighting delay time of the lighting device corresponding to the model code, in addition to the above effects, the lighting delay time of the lighting device is automatically set according to the model. Can be different.

  In addition, by providing an input unit that can change the lighting delay time of the lighting device, the lighting delay time can be changed locally depending on the installation situation of the showcase.

It is a system block diagram in the control apparatus of the showcase by embodiment of this invention. It is a flowchart figure in FIG. It is a schematic block diagram of a cold air circulation type open showcase.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

FIG. 1 shows a system configuration diagram of a showcase. 1A-1D shows a showcase, and a control unit 2A-2D and lighting devices 10A-10D are provided inside the showcase 1A-1D, respectively. ing.
The illuminating devices 10A-10D are provided on the product display shelves, the canopy part, and the ceiling part of the inner box of each showcase 1A-1D.
The showcases 1A-1D are connected by a crossover wiring 3 via the control units 2A-2D.

  The control units 2A-2D are respectively provided with model code storage units 21a-21d.

  The model code storage units 21a-21d store lighting delay times of the illumination devices 10A-10D for each model code of the showcase.

  The lighting delay times of the lighting apparatuses 10A to 10D for each model are, for example, four types, model AD, as model codes. Model A: no delay, model B: delay present (short) as the respective model delay codes. , Model C: stored with delay (standard), D: stored with delay (long). The value of this delay time can be set as appropriate.

  Reference numeral 5 denotes a management device that outputs various control commands including lighting commands to the lighting devices 10A-10D to each showcase 1A-1D. The commands are sequentially transmitted to the showcases 1A to 1D via the crossover wiring 3.

  In this configuration, the operation will be described using the flowchart of FIG.

  In the present embodiment, model codes are stored in the model code storage units 21a-21d as showcase 1A: model A, showcase 1B: model B, showcase 1C: model C, showcase 1D: model D, respectively. It will be described as

  First, when a lighting command for the lighting devices 10A-10D is transmitted from the management device 6 to the control unit 2A of the showcase 1A via the external wiring 4 before the store is opened, the control unit 2A controls the control unit 2B, the control unit A lighting command is sequentially transmitted from 2B through the control unit 2C and from the control unit 2C through the control unit 2D and the crossover wiring 3 (step S1, Yes).

  When each control unit 2A-2D receives the lighting command, it reads the lighting delay time of its own lighting device 10A-10D from the model code storage unit 21a-21d based on the model code of its own showcase (step S2).

  That is, since the showcase 1A is the model A (step S3, Yes), “no delay” is read from the model code storage unit 21a (step S4). When the command is received, the illumination device 10A is turned on (step S5).

  Next, since the showcase 1B is the model B (step S6, Yes), “delayed (short)” is read from the model code storage unit 21b, and “delayed (short)” is read. After the lighting command is received, a short lighting delay time set in advance is counted (step S7, Yes), and then the lighting device 10B is turned on (step S8).

  Next, since showcase 1C is model C (step S9, Yes), “delayed (standard)” is read from model code storage unit 21c, and “delayed (standard)” is read. After the lighting command is received, a predetermined standard lighting delay time is counted (step S10, Yes), and then the lighting device 10C is turned on (step S11).

  Next, since the showcase 1D is the model D (step S12, Yes), “delayed (long)” is read from the model code storage unit 21d and “delayed (long)” is read, so the control unit 2D After counting a predetermined long lighting delay time after receiving the lighting command (step S13, Yes), the lighting device 10D is turned on (step S14).

  In this way, by varying the time until the lighting device is turned on according to the model code of each showcase, the inrush current when the lighting device is turned on can be reduced, and the power supply voltage drop of the showcase is kept low. be able to.

  Moreover, since the lighting delay time can be set simply by inputting the model, the setting work can be reduced.

  Although the lighting command is transmitted from the management device, the parent device is determined in a group of a plurality of showcases, and the lighting device of the same group is turned on based on the lighting command of the parent device. It may be. In addition, a plurality of showcases may be powered on at the same time.

  If the same model exists in the group, each showcase 1A-1D or management device 5 is provided with an input device that can change the lighting delay time of the lighting device, and the lighting delay time is set from the input device. Thus, the lighting delay time may be changed even for the same model code.

  In the above embodiment, the lighting delay time corresponding to the model code is stored in the model code storage units 21a-21d. However, the lighting delay time may be stored in each showcase regardless of the model code. In that case, if there is a showcase having the same lighting delay time using the input device or the like, the lighting delay time may be changed.

1A-1D Showcase 2A-2D Control unit 3 Crossover wiring 4 External wiring 5 Management device 10A-10D Illumination device 21a-21d Model code storage unit

Claims (3)

  In a showcase control device in which a plurality of showcases are grouped together and each of the plurality of showcases is provided with a lighting device, and the lighting devices of the plurality of showcases are turned on by a common lighting command. Each of the plurality of showcases includes a storage unit that stores a lighting delay time of the lighting device, and a control unit that lights the lighting device based on the lighting delay time when the lighting command is given. A control device for a showcase, comprising:   2. The showcase control device according to claim 1, wherein each of the plurality of showcases includes a storage unit that stores a model code and stores a lighting delay time of the lighting device corresponding to the model code. Showcase control device characterized by.   3. The showcase control apparatus according to claim 1, further comprising an input unit capable of changing a lighting delay time of the lighting device.

Images