JPH10275684A - Lighting control device for luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a such a lighting control device for a luminaire as being capable of preventing the influence of electric failure even if a commercial power supply is in electric failure in the ambient darkness. SOLUTION: This device has a circuit 18 to supply DC power from a commercial power supply C, a circuit 16 to supply DC power when in electric failure, a circuit 11 to generate a detection signal corresponding to ambient brightness, a control part (a circuit 12 and elements 13, 14) to find out the detection signal from the circuit 11 to be at a preset value or less and supply the power supply C to a bulb A when a dark condition is detected and an electric failure detection part (a switch 15, a circuit 17 and an element 19) to supply DC power from the circuit 18 to the circuits 11, 12 when the power supply C is detected to be normal and generate a detection signal showing the detection result and supply DC power from the circuit 16 to the circuits 11, 12 when it is detected to be in electric failure. The control part supplies DC power from the circuit 16 to a bulb B when ambient darkness is detected after receiving the detection signal for electric failure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting control device for lighting equipment for controlling lighting of the lighting equipment.

[0002]

2. Description of the Related Art Some lighting control devices for lighting equipment automatically turn on the lighting equipment. This lighting control device includes an illuminance sensor that detects the brightness of the surroundings and a human body detection sensor that detects the presence of a person. Then, when the lighting control device detects that the surroundings are dark with the illuminance sensor, and detects a human body in the detection range of the human body detection sensor,
Turn on the lighting equipment.

A lighting control device for such a lighting fixture is disclosed in Japanese Patent Application Laid-Open No. 64-41198. With this lighting control device, it is possible to automatically cope with a change in the surrounding brightness and the ingress and egress of a person.

[0004]

By the way, the lighting control device for lighting equipment described above has the following problems. That is, since this lighting control device includes an illuminance sensor and a human body detection sensor that always require a power supply, a commercial power supply is used as the power supply. As a result, if the commercial power supply fails, even if a person enters the detection range of the human body detection sensor at night,
There is a problem that the lighting equipment does not light.

[0005] For this reason, for example, when a lighting fixture is installed at the entrance, if a power failure occurs at night, the lighting fixture does not turn on even if a person enters the detection range of the human body sensor.
As a result, a situation occurs in which a person who has returned from going out has a hard time opening a key because his / her hand is dark.

SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem and provide a lighting control device for a lighting apparatus capable of preventing the influence of a power failure of a commercial power supply when the surroundings are dark. To provide.

[0007]

Means for Solving the Problems In order to achieve the object, an invention according to claim 1 comprises: a main power supply section for supplying DC power obtained by AC / DC conversion of a commercial power supply; An auxiliary power supply unit for supplying DC power; and a light / dark detection unit that operates with the DC power supplied by any of the above and generates a detection signal corresponding to the brightness when detecting brightness in a preset brightness detection range. And operates with the DC power supplied by any of the above, and checks whether a detection signal from the light / dark detection unit is equal to or less than a set value, and detects a dark state in the light / dark detection range. The control unit that supplies the lighting equipment and, when the normality of the commercial power supply is detected, the DC power from the main power supply unit is supplied to the light / dark detection unit and the control unit. As it occurs A power failure detection unit that supplies DC power from the auxiliary power supply unit to the light / dark detection unit and the control unit, and the control unit detects a dark state in the light / dark detection range after receiving a detection signal indicating a power failure from the power failure detection unit. Then, it is a lighting control device of the lighting fixture that supplies the DC power from the auxiliary power supply unit to the second lighting fixture.

According to the first aspect of the present invention, when the power failure detection unit detects that the commercial power supply is normal, it supplies DC power from the main power supply unit to the light / dark detection unit and the control unit. The control unit checks whether the detection signal from the light / dark detection unit is equal to or less than a set value. When detecting the dark state in the light / dark detection range, the control unit supplies commercial power to the first lighting fixture.

[0009] When detecting a power failure of the commercial power supply, the power failure detection unit generates a detection signal indicating the detection result. At the same time, the power failure detection unit supplies the DC power from the auxiliary power supply unit to the light / dark detection unit and the control unit. The control unit, after receiving a detection signal indicating a power failure from the power failure detection unit and detecting a dark state in the light / dark detection range, reduces the DC power from the auxiliary power supply unit to the second power.
Supply to lighting equipment.

According to a second aspect of the present invention, there is provided a main power supply unit for supplying DC power obtained by AC / DC conversion of a commercial power supply, an auxiliary power supply unit for supplying DC power when the commercial power supply is interrupted, Operates with the DC power supplied by the DC power supply, and detects the brightness of a preset brightness detection range, a brightness detection unit that generates a detection signal corresponding to the brightness, and the DC power supplied by any of the above. It operates and detects the presence of a person in a preset human body detection range, operates with a human body detection unit that generates a detection signal, and operates with the DC power supplied by any of the above, and the detection signal from the light / dark detection unit is set. A control unit that supplies commercial power to the first lighting fixture when a detection signal is received from the human body detecting unit when a dark state of the light and dark detection range is detected by checking whether the commercial power is normal or not. Inspection Then, the DC power from the main power supply unit is supplied to the light / dark detection unit, the human body detection unit, and the control unit. A light / dark detection unit, a power failure detection unit to be supplied to the human body detection unit and the control unit,
The control unit, after receiving a detection signal indicating a power failure from the power failure detection unit and detecting a dark state in the light / dark detection range and receiving a detection signal from the human body detection unit, applies the DC power from the auxiliary power supply unit to the second lighting unit. It is a lighting control device of a lighting fixture supplied to the fixture.

According to the second aspect of the present invention, when the power failure detecting section detects that the commercial power supply is normal, it supplies DC power from the main power supply section to the light / dark detecting section, the human body detecting section and the control section. The control unit checks whether the detection signal from the light / dark detection unit is equal to or less than a set value. When the control unit detects a dark state in the light / dark detection range and receives a detection signal from the human body detection unit, the control unit supplies commercial power to the first lighting fixture.

When detecting a power failure of the commercial power supply, the power failure detection unit generates a detection signal indicating the detection result. At the same time, the power failure detection unit supplies DC power from the auxiliary power supply unit to the light / dark detection unit, the human body detection unit, and the control unit. The control unit is
After receiving a detection signal indicating a power failure from the power failure detection unit, when detecting a dark state in the light / dark detection range, receiving a detection signal from the human body detection unit, the DC power from the auxiliary power supply unit is converted to the second power.
Supply to lighting equipment.

According to a third aspect of the present invention, there is provided a main power supply unit for supplying DC power obtained by AC / DC conversion of a commercial power supply, an auxiliary power supply unit for supplying DC power when the commercial power supply is interrupted, Operates with the DC power supplied by the DC power supply, and detects the brightness of a preset brightness detection range, a brightness detection unit that generates a detection signal corresponding to the brightness, and the DC power supplied by any of the above. It operates and detects the presence of a person in a preset human body detection range, operates with a human body detection unit that generates a detection signal, and operates with the DC power supplied by any of the above, and the detection signal from the light / dark detection unit is set. A control unit that supplies commercial power to the first lighting fixture when a detection signal is received from the human body detecting unit when a dark state of the light and dark detection range is detected by checking whether the commercial power is normal or not. Inspection Then, the DC power from the main power supply unit is supplied to the light / dark detection unit, the human body detection unit and the control unit, and when a power failure of the commercial power supply is detected, a detection signal indicating a detection result is generated and the DC power from the auxiliary power supply unit is generated. A light / dark detection unit, a power failure detection unit to be supplied to the human body detection unit and the control unit,
The control unit, after receiving the detection signal indicating the power failure from the power failure detection unit, when detecting the dark state of the light / dark detection range, receiving the detection signal from the human body detection unit, the DC power from the auxiliary power supply unit for a set time. It is a lighting control device of a lighting fixture supplied to a second lighting fixture.

According to the third aspect of the present invention, when the power failure detection unit detects that the commercial power supply is normal, it supplies DC power from the main power supply unit to the light / dark detection unit, the human body detection unit, and the control unit. The control unit checks whether the detection signal from the light / dark detection unit is equal to or less than a set value. When the control unit detects a dark state in the light / dark detection range and receives a detection signal from the human body detection unit, the control unit supplies commercial power to the first lighting fixture for a set time.

The power failure detection section generates a detection signal indicating a detection result when the power failure of the commercial power supply is detected. At the same time, the power failure detection unit supplies DC power from the auxiliary power supply unit to the light / dark detection unit, the human body detection unit, and the control unit. The control unit is
After receiving a detection signal indicating a power failure from the power failure detection unit, when detecting a dark state in the light / dark detection range, receiving a detection signal from the human body detection unit, the DC power from the auxiliary power supply unit is converted to the second power.
Supply lighting equipment for a set time.

[0016]

Next, an embodiment of the present invention will be described.
This will be described with reference to the drawings.

[First Embodiment of the Invention] FIG. 1 shows a first embodiment of the present invention. Lighting control device 1 for lighting fixture of FIG.
The lighting control device 1 (hereinafter, referred to as a lighting control device 1) is installed at an entrance or a corridor of a house. The lighting control device 1 includes:
A light bulb A that is turned on by a commercial power supply and a low-capacity light bulb B that is turned on by a DC power supply are attached. As shown in FIG. 2, the lighting control device 1 includes an illuminance detection circuit 11, a determination processing circuit 12, a triac 13, a transistor 14, a switch circuit 15, an auxiliary power supply circuit 16 as an auxiliary power supply, a voltage detection circuit 17, a main power supply section includes a main power supply circuit 18 and a diode 19.

In the first embodiment, a control unit is constituted by the determination processing circuit 12, the triac 13, and the transistor 14. The switch circuit 15, the voltage detection circuit 17, and the diode 19 form a power failure detection unit.

The illuminance detection circuit 11 is a light-receiving element such as a Cds cell (not shown) whose resistance value changes according to a change in illuminance.
Is provided inside. That is, in the first embodiment, the illuminance is detected to check the brightness of light. Illuminance detection circuit 11
Applies a DC voltage from the main power supply circuit 18 or the auxiliary power supply circuit 16 to the light receiving element, changes the illuminance in the detection range 11A,
That is, a voltage corresponding to a change in brightness around the lighting control device 1 is output to the determination processing circuit 12 as a detection signal.

The triac 13 uses the commercial power source C
Controls whether to supply to. This control is performed by the determination processing circuit 12. In other words, triac 13
When the control signal is received from the determination processing circuit 12, the device becomes conductive, and supplies the commercial power supply C to the electric bulb A.

The transistor 14 controls whether the DC voltage from the auxiliary power supply circuit 16 is supplied to the bulb B.
This control is performed by the determination processing circuit 12. That is, when receiving the control signal from the determination processing circuit 12, the transistor 14 becomes conductive, and supplies the DC voltage from the auxiliary power supply circuit 16 to the bulb B.

The auxiliary power supply circuit 16 is provided inside a storage battery (not shown) and charges the storage battery with the commercial power supply C.
That is, the auxiliary power supply circuit 16 is a circuit for converting the commercial power supply C from AC to DC. When the charging of the storage battery is completed, the auxiliary power supply circuit 16 outputs a DC voltage without being affected by the commercial power supply C. The auxiliary power supply circuit 16 outputs the positive (+) side of the DC voltage of the storage battery to the collector of the transistor 14 and outputs the negative (−) side to the bulb B. Further, the auxiliary power supply circuit 16 outputs a DC voltage to the switch circuit 15.

The switch circuit 15 opens and closes the switch 15A under the control of the voltage detection circuit 17. That is, when the switch circuit 15 does not receive the control signal from the voltage detection circuit 17, the switch circuit 15 opens the switch 15A to
Block the supply of DC voltage from When the switch circuit 15 receives the control signal from the voltage detection circuit 17,
The switch 15A is closed, and the DC voltage from the auxiliary power supply circuit 16 is supplied to the illuminance detection circuit 11 and the determination processing circuit 12.

The main power supply circuit 18 generates a DC voltage from the commercial power supply C. The main power supply circuit 18 applies the generated DC voltage to the illuminance detection circuit 11 and the determination processing circuit 12 via the diode 19.

The diode 19 is for blocking a direct current from the auxiliary power supply circuit 16.

The voltage detection circuit 17 detects whether or not the commercial power supply C is out of power. For this purpose, for example, the voltage detection circuit 17 rectifies and smoothes the commercial power supply C to generate a DC voltage. And when DC voltage is generated,
Voltage detection circuit 17 sends a detection signal indicating that commercial power supply C is normal to determination processing circuit 12. When no DC voltage is generated by rectification and smoothing, the voltage detection circuit 17
A detection signal indicating a power failure of the commercial power supply C
Send to 2. At the same time, the voltage detection circuit 17
A control signal for closing A is sent to the switch circuit 15.

The judgment processing circuit 12 operates with a DC voltage from the main power supply circuit 18 or the auxiliary power supply circuit 16. When the determination processing circuit 12 is in the operating state and the detection signal from the voltage detection circuit 17 indicates that the commercial power supply C is normal, the determination processing circuit 12 performs the following first control.

That is, upon receiving the detection signal from the illuminance detection circuit 11, the determination processing circuit 12 compares the detection signal with a preset set value. If the level of the detection signal is larger than the set value, the determination processing circuit 12 determines that the area around the lighting control device 1 is bright, and the triac 13
And does not send a control signal to the transistor 14. Also,
When the level of the detection signal becomes equal to or less than the set value, the determination processing circuit 12 determines that the periphery of the lighting control device 1 is dark, and sends a control signal only to the triac 13.

As described above, in the case where the commercial power supply C is normal and the surroundings of the lighting control device 1 become dark, the determination processing circuit 12 sends a control signal to only the triac 13.

When the detection signal from the voltage detection circuit 17 indicates a power failure, the determination processing circuit 12 performs the following second control.
That is, when receiving the detection signal from the illuminance detection circuit 11, the determination processing circuit 12 compares the detection signal with the set value. When the level of the detection signal is higher than the set value, the determination processing circuit 12 does not send a control signal to the triac 13 and the transistor 14. When the level of the detection signal falls below the set value, the determination processing circuit 12 sends a control signal only to the base of the transistor 14.

As described above, when the commercial power supply C is out of power,
When the periphery of the lighting control device 1 becomes dark, the determination processing circuit 12 sends a control signal to only the transistor 14.

The lighting control device 1 according to the first embodiment has such a configuration. Next, the operation of the lighting control device 1 will be described.

The voltage detection circuit 17 constantly monitors whether the commercial power supply C is normal. If the commercial power supply C is normal, the voltage detection circuit 17 sends a detection signal indicating that the commercial power supply C is normal to the determination processing circuit 12. At the same time, the voltage detection circuit 17 does not send a control signal to the switch circuit 15.

When the voltage detection circuit 17 does not output a control signal, the switch circuit 15 opens the switch 15A. As a result, the DC voltage from the main power supply circuit 18 is supplied to the illuminance detection circuit 11 and the determination processing circuit 12 via the diode 19.

The illuminance detection circuit 11 operates with a DC voltage from the main power supply circuit 18. When the surroundings of the lighting control device 1 are bright, the illuminance detection circuit 11 sends a detection signal corresponding to the brightness to the determination processing circuit 12. The determination processing circuit 12 compares a detection signal from the illuminance detection circuit 11 with a set value.
When the detection signal from the voltage detection circuit 17 is normal and the level of the detection signal is higher than the set value, the determination processing circuit 12
No control signal is output to As a result, the bulb A and the bulb B are turned off.

When the surroundings of the lighting control device 1 become dark, the level of the detection signal from the illuminance detection circuit 11 becomes smaller than the set value. The determination processing circuit 12 compares a detection signal from the illuminance detection circuit 11 with a set value. When the commercial power supply C is normal and the level of the detection signal is smaller than the set value, the determination processing circuit 12 outputs a control signal only to the triac 13. When the triac 13 receives the control signal, it becomes conductive and supplies the commercial power supply C to the electric bulb A. As a result, only the bulb A is turned on.

When the commercial power supply C fails, the voltage detection circuit 17 outputs a detection signal indicating the power failure to the judgment processing circuit 1.
Output to 2. At the same time, the voltage detection circuit 17 sends a control signal to the switch circuit 15. As a result, the switch circuit 15 closes the switch 15A.
Is supplied to the illuminance detection circuit 11 and the determination processing circuit 12. At this time, since the diode 19 is reverse-biased, the DC voltage from the auxiliary power circuit 16 is
It is not supplied to the main power supply circuit 18.

When the illuminance detection circuit 11 is operating with the DC voltage from the auxiliary power supply circuit 16, when the surroundings of the lighting control device 1 are bright, the judgment processing circuit 12 is operated in the same manner as when the commercial power supply C is normal. Does not output a control signal to the triac 13 and the transistor 14. As a result, the bulb A and the bulb B are turned off.

When the surroundings of the lighting control device 1 become dark, the level of the detection signal from the illuminance detection circuit 11 becomes smaller than the set value. The determination processing circuit 12 compares a detection signal from the illuminance detection circuit 11 with a set value. If the level of the detection signal is lower than the set value when the commercial power source C is out of power, the determination processing circuit 12 outputs a control signal to only the transistor 14. When the transistor 14 receives the control signal, the transistor 14 becomes conductive, and supplies the DC voltage from the auxiliary power supply circuit 16 to the bulb B. As a result, only the bulb B is turned on.

Thus, according to the first embodiment, even if the commercial power supply C is cut off, if the area around the lighting control device 1 becomes dark,
The light bulb B is turned on, and the surroundings can be automatically brightened.

Further, according to the first embodiment, since the electric bulb B has a low capacity, the auxiliary power supply circuit 16 can be turned on for a long time.

In the first embodiment, the auxiliary power supply 16
Has a chargeable / dischargeable storage battery, but is not particularly limited to this. Instead of the storage battery, for example, a battery may be used.

[Second Embodiment of the Invention] FIGS. 3 and 4 show a second embodiment of the present invention. The second embodiment is different from the first embodiment described above only in the human body detection circuit 21 and the determination processing circuit 22, and the other configurations are the same. In the following description, only the different points will be described, and the overlapping portions will be denoted by the same reference numerals in the drawings, and description thereof will be omitted.

The human body detection circuit 21 operates with a DC voltage from the main power supply circuit 18 or the auxiliary power supply circuit 16. The human body detection circuit 21 includes a pyroelectric infrared sensor (not shown) therein. The pyroelectric infrared sensor detects the presence or absence of a human body, that is, the presence of a person, by examining infrared rays emitted by the human body.
At this time, the pyroelectric infrared sensor detects the presence of a person within the preset detection range 21A. When detecting a person in the detection range 21A, the human body detection circuit 21 sends a detection signal indicating the detection of the human body to the determination processing circuit 22.

The decision processing circuit 22 operates with a DC voltage from the main power supply circuit 18 or the auxiliary power supply circuit 16. When the determination processing circuit 22 is in the operating state and the detection signal from the voltage detection circuit 17 indicates that the commercial power supply C is normal, the determination processing circuit 22 performs the following third control.

That is, during the first control of the first embodiment, when the level of the detection signal from the illuminance detection circuit 11 becomes equal to or lower than the set value, the determination processing circuit 22 outputs the detection signal from the human body detection circuit 21. Check for the presence of Human body detection circuit 2
When 1 outputs a detection signal, the determination processing circuit 22 sends a control signal only to the triac 13.

As described above, when the commercial power supply C is normal, the illuminance of the detection range 11A becomes dark, and when a person is present in the detection range 21A, the determination processing circuit 12 sends a control signal only to the triac 13. send.

When the detection signal from the voltage detection circuit 17 indicates a power failure, the determination processing circuit 22 performs the following third control.
That is, during the second control of the first embodiment, when the detection signal from the illuminance detection circuit 11 becomes equal to or less than the set value,
The determination processing circuit 22 checks whether there is a detection signal from the human body detection circuit 21. When the human body detection circuit 21 outputs a detection signal, the determination processing circuit 22 sends a control signal only to the transistor 14.

As described above, when the commercial power supply C is out of power,
When the illuminance of the detection range 11A becomes dark and a person is in the detection range 21A, the determination processing circuit 12 sends a control signal only to the transistor 14.

According to the second embodiment, when the voltage detection circuit 17 does not output a control signal, the switch circuit 1
5 turns on the switch 15A. As a result, the DC voltage from the main power supply circuit
Is supplied to the illuminance detection circuit 11, the determination processing circuit 12, and the human body detection circuit 21 via

When the commercial power supply C is normal, the surroundings of the lighting control device 1 become dark, and the human body detection circuit 21
When the detection signal is received from the
Sends a control signal to the triac 13. This allows
The bulb A lights up.

When the commercial power supply C fails, the voltage detection circuit 1
7 outputs a detection signal indicating a power failure to the determination processing circuit 12. At the same time, the voltage detection circuit 17 sends a control signal to the switch circuit 15. As a result, the switch circuit 15 closes the switch 15A, so that the DC voltage from the auxiliary power supply circuit 16 is supplied to the illuminance detection circuit 11, the determination processing circuit 12, and the human body detection circuit 21.

When the commercial power supply C is out of power, the surroundings of the lighting control device 1 become dark, and the human body detection circuit 21
When the detection signal is received from the
Sends a control signal to the transistor 14. This allows
The bulb B lights up.

Thus, according to the second embodiment, at the time of a power failure, the low-capacity bulb B can be turned on only when a person approaches the lighting control device 1.

[Third Embodiment of the Invention] FIG. 5 shows a third embodiment of the present invention. The third embodiment is different from the above-described second embodiment only in the determination processing circuit 23, and is otherwise the same. In the following description, only the different points will be described, and the overlapping portions will be denoted by the same reference numerals in the drawings, and description thereof will be omitted.

The judgment processing circuit 23 operates with a DC voltage from the main power supply circuit 18 or the auxiliary power supply circuit 16. When the detection signal from the voltage detection circuit 17 indicates that the commercial power supply C is normal, the determination processing circuit 23 performs the following control.

That is, during the third control of the second embodiment, when the level of the detection signal from the illuminance detection circuit 11 becomes equal to or lower than the set value, the determination processing circuit 23 outputs the detection signal from the human body detection circuit 21. Check for the presence of Human body detection circuit 2
When 1 outputs a detection signal, the determination processing circuit 23 sends a control signal to the triac 13. At this time, the determination processing circuit 23 sends a control signal to the triac 13 for a preset time.

Similarly, when the human body detection circuit 21 outputs a detection signal during the fourth control of the second embodiment, the determination processing circuit 23 sends a control signal to the transistor 14. At this time, the determination processing circuit 23 sends a control signal to the transistor 14 for a preset time.

According to the third embodiment, when the commercial power supply C is out of power, when the surroundings of the lighting control device 1 become dark, and when the detection signal from the human body detection circuit 21 is received, the determination processing is performed. The circuit 23 sends a control signal to the transistor 14 for a set time. Thus, the bulb B is turned on for the set time.

As described above, according to the third embodiment, when a person is detected at the time of a power outage at night or the like, the bulb B is turned on for the set time, so that the consumption of the storage battery of the auxiliary power supply circuit 16 can be suppressed. As a result, the lighting control of the bulb B can be performed for a long time.

[0061]

As described above, according to the first aspect of the present invention, even if the commercial power supply is interrupted, each unit operates with the DC power supply from the auxiliary power supply. Can illuminate the surroundings.

According to the second aspect of the present invention, even when the commercial power supply is interrupted, each unit operates with the DC power supply from the auxiliary power supply. Thus, the surroundings can be illuminated by the second lighting fixture only when a person approaches.

According to the third aspect of the present invention, even when the commercial power supply is interrupted, each unit operates with the DC power supply from the auxiliary power supply, and
At night or the like, only when a human body is detected, the surroundings are illuminated by the second lighting fixture for a set time. Thereby, the load on the auxiliary power supply unit can be reduced.

[Brief description of the drawings]

FIG. 1 is an external view showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of the first embodiment.

FIG. 3 is an external view showing a second embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a second embodiment.

FIG. 5 is a block diagram showing a configuration of a third embodiment.

[Explanation of symbols]

 Reference Signs List 1 lighting control device 11 illuminance detection circuit 12 judgment processing circuit 13 triac 14 transistor 15 switch circuit 15A switch 16 auxiliary power supply circuit 17 voltage detection circuit 18 main power supply circuit 19 diode

Claims (3)

[Claims] A main power supply unit for supplying DC power obtained by AC / DC conversion of a commercial power supply; an auxiliary power supply unit for supplying DC power when the commercial power supply is interrupted; Operates on electric power and detects the brightness of the preset brightness detection range,
A light / dark detector that generates a detection signal corresponding to the brightness, and operates with the DC power supplied by any of the above, and checks whether a detection signal from the light / dark detector is equal to or less than a set value, and detects light / dark. When a dark state in the range is detected, a control unit that supplies commercial power to the first lighting fixture, and when normality of the commercial power source is detected, DC power from a main power supply unit is supplied to the light / dark detection unit and the control unit, and the commercial power supply is supplied. A power failure detection unit that generates a detection signal indicating a detection result and supplies DC power from the auxiliary power supply unit to the light / dark detection unit and the control unit when the power failure is detected. A lighting control device for a lighting fixture that supplies DC power from an auxiliary power supply unit to a second lighting fixture when detecting a dark state in a light / dark detection range after receiving from a power failure detection unit. 2. A main power supply unit for supplying DC power obtained by AC / DC conversion of a commercial power supply, an auxiliary power supply unit for supplying DC power when the commercial power supply fails, Operates on electric power and detects the brightness of the preset brightness detection range,
A light / dark detector that generates a detection signal corresponding to the brightness, a human body that operates with the DC power supplied by any of the above and detects a human body in a preset human body detection range, and generates a detection signal. A detection unit, operating with the DC power supplied by any of the above, checking whether a detection signal from the light / dark detection unit is equal to or less than a set value, and detecting a dark state in the light / dark detection range, When a detection signal is received from the
When the control unit that supplies the lighting equipment and the commercial power supply are detected as normal, the DC power from the main power supply unit is supplied to the light / dark detection unit, the human body detection unit, and the control unit. A detection signal is generated, and the DC power from the auxiliary power
A power failure detection unit for supplying to the human body detection unit and the control unit, wherein the control unit detects a dark state in the light / dark detection range after receiving a detection signal indicating the power failure from the power failure detection unit, A lighting control device for a lighting fixture that supplies a DC power from an auxiliary power supply to a second lighting fixture when receiving the signal. 3. A main power supply unit for supplying DC power obtained by AC / DC conversion of a commercial power supply, an auxiliary power supply unit for supplying DC power when the commercial power supply fails, Operates on electric power and detects the brightness of the preset brightness detection range,
A light / dark detector that generates a detection signal corresponding to the brightness, a human body that operates with the DC power supplied by any of the above and detects a human body in a preset human body detection range, and generates a detection signal. The detection unit operates with the DC power supplied by any of the above, checks whether a detection signal from the light / dark detection unit is equal to or less than a set value, and detects a dark state of the light / dark detection range, and detects a human body detection unit. And a control unit that supplies a commercial power supply to the first lighting fixture for a set time upon receiving a detection signal from the power supply unit. When detecting a power failure of the commercial power supply, a detection signal indicating the detection result is generated, and the DC power from the auxiliary power supply unit is detected by a light / dark detection unit.
A power failure detection unit for supplying to the human body detection unit and the control unit, wherein the control unit detects the dark state in the light / dark detection range after receiving the detection signal indicating the power failure from the power failure detection unit, and detects the dark state from the human body detection unit. A lighting control device for a lighting fixture that supplies a DC power from an auxiliary power supply to a second lighting fixture for a set time when receiving a signal.