JPH04337287A - Illumination load control system - Google Patents

Abstract

PURPOSE:To suppress the deterioration of the illuminance of an illuminated face and prevent the deterioration of lighting parts by stopping the excitation of the unlighted illumination load when an illumination load to be lighted is not lighted. CONSTITUTION:Switch elements 5 are inserted to power feed paths from a power line P to multiple illumination loads L respectively. Lighting state detection sections 6 detecting the lighting states of the illumination loads L respectively are provided. When a lighting state detection section 6 detects that the illumination load L to be lighted is not lighted, a control terminal unit 3 reports that the illumination load L is not lighted to a main control device 1. The main control device 1 generates the control data to turn the switch element 5 corresponding to the unlighted illumination load L off and increases the light outputs of other illumination loads L.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting load control system that controls the lighting state of a lighting load connected to a control terminal using a transmission signal transmitted from a main controller via a signal line. It is something.

0002

2. Description of the Related Art Conventionally, as a lighting load control system, as shown in FIG. 1(a), a control terminal device 2 is connected to a main control device 1 via a signal line W. 2
There is provided an apparatus in which the lighting states of a plurality of lighting loads L connected to a main controller 1 are controlled based on a transmission signal transmitted via a signal line W from a main controller 1. The lighting state (flashing state and dimming level) of each lighting load L can be determined by operating a switch provided on the main controller 1 or a switch provided on an input terminal (not shown) separately connected to the signal line. Directed by. Separate address data is set for each control terminal 2, and the main control device 1 transmits transmission signals to each control terminal 2 based on the address data. That is, the main control device 1 sends out to the signal line W a transmission signal in which address data specifying the control terminal device 2 is added to control data for controlling the lighting state of the lighting load L, and the transmission signal included in this transmission signal is The control terminal device 2 to which the address data matching the address data has been set decodes the control data included in the transmission signal and controls the lighting load L to be turned on, off, or dimmed.

[0003] By the way, when the lighting load L that is to be lit becomes non-lit due to the end of the life of the lamp or breakage of the filament, the lamp must be replaced. Therefore, the control terminal 2 is provided with a lighting state detection unit that monitors the lighting state of each lighting load L based on changes in lamp current and lamp voltage.
When the lighting state detection unit detects that the lighting load L is not lit, the main controller 1 is notified that the lighting load L is not lit, and the user is notified by display or alarm. It is considered.

0004

[Problem to be Solved by the Invention] With the above configuration, since the lighting status of all the lighting loads L can be monitored at once by the main controller 1, it is possible to monitor the lighting status of all the lighting loads L at the installation site. The advantage of comparison is that it can save labor. However, on the irradiated surface around the illumination load L that is not lit, the illuminance will decrease until the lamp replacement is completed, which may hinder work. In addition, since the power source continues to be connected to the lighting load L that is not lit, there is a problem that lighting components built into the control terminal 2 deteriorate.

[0005] The present invention aims to solve the above-mentioned problems, and it is possible to suppress a decrease in illuminance on the irradiated surface when a lighting load that should be lit is not lit, and to prevent the illumination load from being lit. The present invention aims to provide a lighting load control system that prevents deterioration of lighting components by stopping power supply to the lighting load.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a control terminal device that controls the lighting state of a lighting load in accordance with a transmission signal transmitted from a main control device via a signal line. The control terminal device includes a switch element inserted into the power supply path for each of the plurality of lighting loads,
and a lighting state detection section that detects the lighting state of each lighting load, and when the lighting state detection section detects that the lighting load that should be lit is not lit, a switch element corresponding to the lighting load is activated. At least one of the main controller and the control terminal is provided with a means for turning off the light and increasing the light output of other lighting loads so that the illuminance of the illuminated surface does not decrease.

[0007]

[Operation] According to the above configuration, the control terminal device includes a switch element inserted into the power supply path for each of the plurality of lighting loads, and a lighting state detection unit that detects the lighting state of each lighting load, and When the lighting state detection unit detects that the lighting load that should be lit is not lit,
At least one of the main controller and the control terminal is provided with means for turning off the switch element corresponding to the lighting load and increasing the light output of the other lighting loads so as not to reduce the illuminance of the illuminated surface. This makes it possible to prevent a decrease in illuminance on the irradiated surface by increasing the light output of other lighting loads when a lighting load that should be turned on is not lit. By turning off the switch element inserted in the power supply path, power is not wasted to be supplied to the lighting load, and deterioration of the lighting components can be prevented.

[0008]

[Embodiment] As shown in FIG. 1(a), the basic configuration is as described as the conventional technology, and a control terminal 2 is connected to a main controller 1 via a signal line W. . Here, an input terminal device having a switch corresponding to the lighting state of the lighting load L may be connected to the signal line W. The main control device 1 is generally stored in a control panel or the like. Signal line W
consists of a pair of lines, and in the control terminal 2, the signal line W
Power is supplied to the circuit section by rectifying and smoothing the transmission signal being transmitted. Usually, a plurality of control terminals 2 are provided (two in FIG. 1). A plurality of lighting loads L are connected to the control terminal 2, and the lighting loads L
is supplied with power from a commercial power source AC via a power line P.

By the way, the control terminal 2 is shown in FIG. 1(b).
As shown in FIG. 2, a signal processing unit 3 is provided that receives a transmission signal transmitted through a signal line W. That is, the main control device 1 sends a transmission signal in which address data specifying the control terminal 2 is added to control data for setting the lighting state of the lighting load L, and the signal processing unit 3 When the address data included in the transmission signal matches the preset address data, the control data of that transmission signal is taken in. The captured control data is input to the control unit 4, and the lighting state of each lighting load L is set according to the control data. There are two types of control signals output from the control unit 4 to the lighting load L: an on/off signal that sets the lighting load L on or off, and a dimming signal that sets the level of light output of the lighting load L. There is. Here, switch elements 5 each consisting of a relay are inserted in the power supply path from the power supply line P to each lighting load L, and a lighting state detection unit 6 that monitors the lighting state of each lighting load L is inserted. It is provided. The switch element 5 is turned on/off from the control section 4.
On/off is controlled by an off signal. Further, as the lighting state detection section 6, for example, one that detects the lamp current by using a current transformer or monitors the voltage across a low resistance, one that detects the lamp voltage, or one that detects the lamp current and lamp voltage. It is possible to use a device that detects the voltage at the same time. The output of the lighting state detection section 6 is input to the control section 4, and the control section 4 A/D converts the output level of the lighting state detection section 6, and then transmits it to the main control device 1 via the signal processing section 3. .

On the other hand, the main controller 1 constantly monitors the lighting state of the lighting load L, and as shown in FIG. 2, when the lamp current or lamp voltage detected by the lighting state detector 6 is abnormal, (That is, when the lighting load L is not lit), control data is created so as to turn off the switch element 5 corresponding to the lighting load L in which an abnormality has been detected. At the same time, control data is created to increase the level of light output of other lighting loads L, thereby preventing the illuminance around the lighting loads L that are not lit from decreasing. moreover,
As in the conventional case, the lighting load L that is not lit is notified by a display or an alarm to prompt the lamp to be replaced (this operation is omitted). In this way, when any lighting load L is not lit, control data corresponding to the non-lit state is created, and the switch element 5 corresponding to the non-lit lighting load L is turned off. Therefore, the dimming signals to other lighting loads L are set to increase the light output.

In the above embodiment, the output level of the lighting state detector 6 is transmitted to the main controller 1, but the control unit 4 determines whether the lighting load L is abnormal based on the output level of the lighting state detector 6. It may be determined whether the light is on or not, and only the determination result may be transmitted to the main control device 1. In addition, when the lighting load L is not lit, the switch element 5
and the operation of controlling the amount of light adjustment is performed by the control unit 4,
Only the control results may be sent back to the main control device 1.

0012

Effects of the Invention As described above, the present invention includes a control terminal that includes a switch element inserted into a power supply path for each of a plurality of lighting loads, and a lighting state detection unit that detects the lighting state of each lighting load. When the lighting state detection unit detects that the lighting load that should be lit is not lit, the switch element corresponding to the lighting load is turned off, and the illuminance of the illuminated surface is not reduced. At least one of the main control device and the control terminal device is provided with means for increasing the light output of other lighting loads, so that when the lighting load that should be turned on is not lit, the light output of the other lighting loads is increased. By increasing the light output, it is possible to prevent a decrease in the illuminance of the illuminated surface, and moreover, by turning off the switch element inserted in the power supply path of the lighting load,
This has the advantage that power is not wasted to be supplied to the lighting load, and deterioration of lighting components can be prevented.

[Brief explanation of drawings]

FIG. 1 shows an embodiment, in which (a) is a block diagram showing the overall configuration, and (b) is a block diagram showing a control terminal.

FIG. 2 is an explanatory diagram showing the operation of the main control device in the embodiment.

[Explanation of symbols]

1 Main control device 2 Control terminal 3 Signal processing section 4 Control section 5 Switch element 6　　　Lighting state detection section L Lighting load P Power line W Signal line

Claims (1)

[Claims] 1. A control terminal device that controls the lighting state of a lighting load in accordance with a transmission signal transmitted from a main control device via a signal line, the control terminal device controlling a lighting state of a plurality of lighting loads. A switch element inserted into the power supply path, and
and a lighting state detection section that detects the lighting state of each lighting load, and when the lighting state detection section detects that the lighting load that should be lit is not lit, a switch element corresponding to the lighting load is activated. At least one of the main control device and the control terminal device is provided with means for turning off the illumination load and increasing the light output of other lighting loads so as not to reduce the illuminance of the illuminated surface. Lighting load control system.