KR101666349B1 - Method and apparatus for controling light device - Google Patents

Abstract

Disclosed are a method and an apparatus for controlling a lighting device. The apparatus for controlling the lighting device may include: a key input device implemented to generate an address designating signal for controlling at least one lighting device corresponding to a switch based on the on/off operation of at least one switch among a plurality of switches included in a switching unit; and a control device controlling the on/off state of a deep switch connected to at least one lighting device corresponding to at least one switch among the plurality of lighting devices after receiving the address designating signal from the key input device, and controlling the on/off state of at least one lighting device.

Description

[0001] METHOD AND APPARATUS FOR CONTROLLING LIGHT DEVICE [0002]

The present invention relates to a method and an apparatus for controlling a lighting apparatus, and more particularly, to a lighting apparatus and a switching method of a lighting apparatus by using a dip switch to determine the ON / OFF state of the lighting apparatus, And more particularly, to a method and apparatus for controlling a lighting apparatus that allows easy control of on / off of a lighting apparatus.

The lighting plan in the interior is something to consider along with the overall architecture and interior design. Nowadays, instead of focusing on the functional aspect that only brightens the room, it needs more integrated and consistent lighting design with the entire building, considering the decorative aspect.

It is necessary to install appropriate lighting fixtures for each space of the building, so that the indoor atmosphere can be saved according to the function of each space, and it is possible to prevent eye fatigue caused by mistaken light and provide psychological stability.

In the installation of such a lighting apparatus, the wiring method of the lighting apparatus and the switch of the lighting apparatus is complicated and the electric wire between the lighting apparatus and the switch is purchased between the concrete such as the wall and the ceiling according to the number of the lighting lamps. do.

In addition, in the case of changing interior decorations, arrangements of lighting fixtures, and wiring changes, it is usually not possible to use the wires that have already been purchased, so that new wires are used, which causes a lot of electric wires, piping material costs, labor costs, and other construction costs .

Above all, complicated circuits and wires embedded in ceilings or walls can cause leakage or fire.

10-2009-0108343

It is therefore an object of the present invention to provide a lighting control device capable of solving all switching problems with a small amount of power supply line by determining the on / off state of the lighting device using a dip switch and simplifying the wiring method of the lighting device will be.

It is another object of the present invention to provide a lighting control device capable of easily changing a switching relation between a switching means and a lighting device and capable of turning on and off the lighting lamps at any place by providing a plurality of switching means on an entrance or a wall surface .

It is another object of the present invention to provide a lighting control device that can reduce power by controlling lighting by applying to a house, apartment house, a large-sized building, and a streetlight.

According to an aspect of the present invention, there is provided an illumination control apparatus for controlling at least one illumination device corresponding to a switch based on an on / off operation of at least one of a plurality of switches included in a switching unit, Wherein the addressing signal is generated by filtering after a frequency division procedure of a switching signal generated by a switching operation of the at least one switch and an amplification procedure of a divided frequency, And an on / off state of a dip switch connected to the at least one illuminating device corresponding to the at least one switch among the plurality of illuminating devices by receiving the address specifying signal from the key input device, Wherein the control device detects the frequency of the addressing signal, selects the at least one lighting device that matches the detected frequency, and the at least one lighting device Wherein the control unit controls the at least one lighting device to be turned on when the dip switch corresponding to the device is on, and the lighting control device controls the lighting device to switch between a plurality of lighting devices, Off state of the DIP switch on the basis of the information, The user device generates a switch map based on the identification information of the plurality of switches and the location information of the plurality of switches, and transmits the identification information of the plurality of lighting devices and the location information of the plurality of lighting devices Generates an illumination device control map by combining the switch map and the illumination device map, and generates the mapping relation information based on the illumination device control map, the illumination control device comprising: The lighting device according to any one of claims 1 to 3, wherein the lighting device is a lighting device. The lighting device according to claim 1, It is determined whether or not the lighting device operation determination sensor is in the ON state The control unit transmits a signal for requesting the control unit to determine whether the light is not defective, and the control unit, when receiving the signal, sets a connection between the specific lighting device and a switch other than the specific switch If the on / off operation of the specific lighting device by the other switch is normally performed, it is determined that the specific switch is defective. If the on / off operation of the specific lighting device is not normally performed, .

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According to the above-described illumination control device, the switching problem can be solved by a small amount of power supply line by determining the on / off state of the lighting device by using the dip switch, and the wiring method of the lighting device is simplified, There is also an effect that the electric wire between the lighting device and the switching device is not complicated and the interior utilization is increased.

In addition, the present invention allows a user to easily change the switching relationship between the switching means and the lighting apparatus, and allows a plurality of switching means to be installed on the entrance or the wall surface to turn on / off the lighting apparatus at any place. And it is an object of the present invention to provide a lighting control device which can be applied variously.

It is another object of the present invention to provide a lighting control device capable of reducing power consumption by performing illumination control by lighting an illumination lamp at a time difference or easily changing a lighting position of a lighting lamp by applying it to a house, a multi- Device.

1 is a conceptual diagram illustrating a lighting control apparatus according to an embodiment of the present invention.
2 is a circuit diagram of a key input device of a lighting control apparatus according to an embodiment of the present invention.
3 is a circuit diagram showing a control apparatus of a lighting control apparatus according to an embodiment of the present invention.
4 is a conceptual diagram illustrating a lighting control method according to an embodiment of the present invention.
5 is a conceptual diagram illustrating a lighting control method according to an embodiment of the present invention.
6 is a conceptual diagram illustrating a lighting control method according to an embodiment of the present invention.
7 and 8 are circuit diagrams showing details of the key input device of the illumination control device described above with reference to FIG.
9 and 10 are circuit diagrams showing details of the control apparatus of the illumination control apparatus described above with reference to Fig.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

1 is a conceptual diagram illustrating a lighting control apparatus according to an embodiment of the present invention.

FIG. 1 illustrates a lighting control apparatus for adaptively changing a lighting apparatus (or an illumination lamp) capable of performing on / off control using a switch included in a switching unit based on a deep switching unit.

Referring to FIG. 1, the illumination control device may include a key input device and a control device.

The key input device 100 may include a switching unit 110, a frequency division unit 120, an amplification unit 130, a first power supply unit 140, and a filter unit 145.

The controller 150 may include a controller 160, a frequency detector 155, a dip switch 165, a second power supply 175, and a switching circuit 170.

The key input device 100 may be implemented to generate identification information (address designation signal) generated by a switching operation (or an on / off operation) of a switch included in the switching unit 110. [

The control device 150 may receive the identification information (addressing signal) generated by the switching operation of the switch and may switch at least one DIP switch included in the DIP switch 165 based on the addressing signal. The DIP switch included in the DIP switch 165 is connected to the lighting device 180, and on / off of the lighting device 180 can be determined based on the switching operation of the DIP switch. That is, the on / off state of at least one DIP switch included in the DIP switch 165 based on the switching of a specific switch can be changed, and the ON / OFF state of at least one DIP switch can be changed Whether the device 180 is turned on or off can be determined.

According to an embodiment of the present invention, the control device 150 finds the lighting device 180 corresponding to the switch switched by the user, checks whether the DIP switches connected to the lighting device 180 are on / off, Off signal to the lighting device 180. [0050] FIG.

According to the embodiment of the present invention, the ON / OFF states of the plurality of DIP switches included in the DIP switch 165 according to the switching of a specific switch are not fixed but can be changed according to the setting of the user. When the ON / OFF states of the plurality of DIP switches included in the DIP switch 165 according to the setting of the user are changed according to the switching of the specific switch, the lighting device turned on / off according to the switching operation of the specific switch may be changed have. If such a method is used, on / off states of different lighting devices can be determined based on one switch according to the on / off state setting of the user's deep switching section 165 without new wiring construction.

Hereinafter, the operation of each component included in the key input device 100 is started.

The switching unit 110 may include a plurality of switches. The plurality of switches included in the switching unit 110 may be used to determine the on / off state of the lighting device 180 based on the switching operation by the user.

The frequency divider 120 may be implemented to frequency divide the switch signal generated by the switching operation of the switch included in the switching unit 110. [

The amplification unit 130 may be implemented to amplify the frequency divided by the frequency division unit 120 and output the amplified frequency as an address designation signal.

The first power supply unit 140 may be implemented to supply power to the key input device.

The filter unit 145 may be installed at the output portion of the amplification unit 130 between the key input device 100 and the controller 150. [ The filter unit 145 may be implemented to perform a filtering process so as to pass only the address specifying signal and to avoid redundant addresses when used simultaneously in several places.

Hereinafter, the operation of each component included in the control device 150 is started.

The DIP switch 165 may be implemented to determine hardware on / off operation of the illumination of the multi-attention lights. The dip switches may be implemented in a one-to-one correspondence with the lighting apparatus 180 or in one to N (N is a natural number of 2 or more) to control the on / off operation of the lighting apparatus 180.

The frequency detector 155 may be implemented to detect a frequency corresponding to the address specifying signal received from the key input device.

The control unit 160 determines whether the DIP switches connected to the illumination device 180 are turned on or off after finding the illumination device 180 corresponding to the frequency detected by the frequency detection unit 310, Off < / RTI > signal to the < / RTI > The controller 160 may be configured to output a power-on signal to turn on the illumination device 180 when the dip switch of the illumination device 180 corresponding to the address designation signal is turned on.

Alternatively, the controller 160 may determine the ON / OFF state of at least one DIP switch included in the DIP switch 165 according to the frequency corresponding to the address designation signal. For example, in the case of the addressing signal transmitted by the first switch, the on / off state of at least one DIP switch included in the DIP switch 165 may be changed according to the on / off operation of the first switch . As the on / off state of at least one DIP switch included in the DIP switch 165 changes, the on / off state of at least one illuminator 180 connected to the DIP switch 165 can be changed have.

The second power supply unit 175 may be implemented to supply or cut off power to the lighting device 180 according to the on / off status of the lighting device 180 by the control unit 160.

The switching circuit portion 170 includes triac and the triac is triggered by the control device to connect the second power supply portion 175 and the lighting device 180. [

When switching on / off of the lighting device 180 is determined using the dip switch, all switching problems can be solved by a small amount of power lines in the lighting control device, and the wiring method of the lighting device 180 can be simplified. In addition, the relationship between the switches and the illumination devices whose on / off status is controlled by the switches can be easily changed according to the user's setting. Therefore, a plurality of switches for controlling a specific lighting control device on the entrance or wall surface included in the lighting control device can be implemented to control the on / off state of the lighting device 180 anywhere.

Hereinafter, a circuit diagram of a specific key input device and a control device will be described.

2 is a circuit diagram of a key input device of a lighting control apparatus according to an embodiment of the present invention.

2, the key input device may include a switching unit 210, a frequency division unit 220, an amplification unit 230, a power supply unit 240, and a filter (not shown).

The switch unit 210 may be installed at a place where the user's hand touches the wall or the outside and may be switched by the user to generate a switching signal for on / off operation of at least one illumination light. Each of the plurality of switches included in the switching unit 210 can generate a unique frequency and an addressing signal can be generated according to a unique frequency.

The frequency divider 220 may be implemented to frequency divide the switching signal output from the switching unit 210.

The amplifying unit 230 may be implemented to amplify the frequency divided by the frequency dividing unit 220 and output the amplified frequency as an addressing signal. The power supply unit 250 may be implemented to supply power to the key input device 10.

A filter (not shown) may be implemented at the output portion of the amplification unit 230 between the key input device and the control device. A filter (not shown) may pass the addressing signal only and may perform a filtering process to avoid duplicate addresses when used in multiple locations simultaneously.

3 is a circuit diagram showing a control apparatus of a lighting control apparatus according to an embodiment of the present invention.

3, the control device may include a dip switch 300, a frequency detector 310, a controller 320, a power supply 330, and a switching circuit 340.

The DIP switch 300 may be implemented to determine whether to turn on / off each of the plurality of lighting devices by hardware. At least one dip switch included in the dip switching unit 300 may be provided so as to correspond to the illumination lamp in a one-to-one or one-to-N relationship (N is a natural number of 2 or more). The on / off state of the corresponding lighting device can be determined based on the on / off state of the dip switch.

The frequency detector 310 may be implemented to detect a frequency corresponding to the address designation signal input from the key input device.

The control unit 320 finds the illumination device corresponding to the frequency detected by the frequency detection unit 310 and then checks whether the dip switch connected to the illumination device is turned on or off and outputs a power on / do. When the DIP switch of the illumination device corresponding to the address designating signal is turned on, the controller 320 outputs a power-on signal to turn on the lighting device.

Alternatively, the controller 320 determines an illumination device controlled by a switch corresponding to a frequency corresponding to the address designating signal, and controls the ON / OFF state of the dip switch included in the DIP switch according to the on / off state of the switch The on / off state of the lighting device controlled by the switch can be controlled. The on / off state of the dip switch included in the dip switch part according to the on / off state of the switch can be preset by the user.

The power supply unit 330 may be implemented to supply or cut off power to the illumination lamp according to a power on / off signal of the controller 320. [

The switching circuit unit 340 may include a triac to control the AC power between the power source unit 330 and a plurality of light sources.

TRIAC is turned on by TRIGER according to phase angle and turns off automatically when passing 0 point. In other words, AC power is a sinusoidal wave, and the power of the home power goes through 120 points in one second. Therefore, the triac 355 is turned off when the power passes through zero point.

This triac triggers the gate to turn on once, and it will be maintained until the node current falls below the HOLD current even if the gate signal is lost.

Hereinafter, the operation of the illumination control apparatus according to the embodiment of the present invention will be described more specifically with reference to FIG. 2 and FIG.

The lighting control apparatus according to an embodiment of the present invention can generate a switching signal by turning on a specific switching included in the switching unit to turn on a specific lighting device by the user. Then, the frequency divider may frequency-divide the switching signal and the sweep unit may amplify the frequency-divided signal.

The signal amplified by the amplifying unit can be transmitted to the control apparatus as an addressing signal. At this time, since the switching unit or the other electric devices installed in various places can perform the switching operation at the same time, the filter can perform the filtering process so that the addresses are not duplicated, and only the address specifying signal can be passed.

The control unit receives the address designation signal transmitted by the key input device, detects the frequency in the frequency detection unit, and the control unit finds the lighting device selected by the user among the plurality of lighting devices based on the frequency detected by the frequency detection unit You can.

When the dip switch connected to the lighting apparatus is on, the control unit outputs a power-on signal. The switching circuit unit receives the power-on signal and triggers the triac, connects the power unit to the lighting apparatus, It can be turned on.

The user can change the address of the lighting device controlled by the switch by adjusting the ON / OFF of the dip switch. That is, if only the on / off state of the dip switch connected to the lighting device is changed without changing the electric wiring between the lighting device and the switch included in the switching part, the connection relation between the lighting device and the switch can be changed.

Each of the plurality of switches included in the switching unit may generate a unique frequency and an addressing signal may be generated according to a unique frequency. Therefore, the ON / OFF of the dip switch 32 connected to the lighting apparatus can be determined and the lighting of the lighting apparatus can be controlled.

Therefore, the lighting control device of the present invention can use the electric wire routed to each switch included in the switching unit as two electric power lines, so that anyone can easily wire and connect the electric wire, and the complex circuit embedded in the ceiling and the electric wire A short circuit and a fire which can be generated by the power supply can be prevented.

4 is a conceptual diagram illustrating a lighting control method according to an embodiment of the present invention.

4, a method of controlling a lighting control apparatus through a network between a lighting control apparatus and a user apparatus is disclosed. The following operations may be performed based on the lighting control application installed in the user equipment.

Referring to FIG. 4, each of the plurality of switches of the user apparatus and the switch unit may form a network. The user device may be a smart phone, smart pad, PC, or the like. For example, each of the plurality of switches may include a communication unit capable of performing networking, and a network between a plurality of switches and a plurality of user apparatuses may be formed based on a communication unit of each of the plurality of switches and a communication unit of the user apparatus.

When the user equipment sends a switching scanning message to find each of the plurality of switches, each of the plurality of switches may transmit a switching scanning response message to the user device in response to the switching scanning message. The scanning response message may include identification information of each switch and position information of each switch.

The user apparatus can register a plurality of switches based on the scanning response message (step S400).

For example, the user device may identify each of the first to tenth switches that transmitted the scanning response message and register each of the first to tenth switches with the user device.

Further, the user apparatus can register information on a plurality of lighting apparatuses controlled by the deep switching unit (step S410).

The illumination control device may include a communication unit. The communication unit of the illumination control device can transmit identification information for a plurality of lighting devices controlled by the deep switching unit to the user device. Each identification information may be given to the illumination device, and the communication section collects the identification information of the illumination device whose ON / OFF state is controlled by the dip switching section and outputs identification information of the illumination device and illumination The device registration message can be transmitted to the user device.

The user device may register a lighting device that is hardware controlled by the deep switching unit based on the lighting device registration message. For example, the user device may register each of the first to twentieth illuminating devices with the user device based on the illuminated device registration message.

In this way, the user can obtain information about the registered switch and the registered lighting device.

The user can set the matching relationship between each of the plurality of switches and each of the plurality of illumination devices (step S420).

For example, the user can determine the lighting device to be controlled based on the on / off state change of the first switch. The user can set the mapping relationship between the first switch and the fifth lighting device through the lighting control application. As another example, the user can determine the lighting device to be controlled based on the on / off state change of the third switch. The user can set the mapping relationship between the third switch and the first lighting device and the fifth lighting device through the lighting control application.

Information on the mapping relationship between the switch and the lighting device (mapping relationship information) can be transmitted to the lighting control device, and on the basis of the mapping relationship information transmitted by the user device, on You can set the / off action.

5 is a conceptual diagram illustrating a lighting control method according to an embodiment of the present invention.

5, a method of controlling a lighting control apparatus through a network between a lighting control apparatus and a user apparatus is disclosed. In particular, a method of setting a mapping relationship between a switch and a lighting apparatus by generating a mapping map based on position information of a switch and position information of a lighting apparatus is disclosed in FIG.

Referring to FIG. 5, the lighting control application of the user device may receive the position information of the switch and generate a switch map indicating the position of each switch (step S500). The switch map may include information on the location of each of the switches.

The lighting control application of the user device may receive the location information of the lighting device, and may generate a lighting device map indicating the location of each of the lighting devices (step S510). The illuminator map may include information about the position of each illuminator.

The switch map and the illuminator map may be combined to generate the illuminator control map (step S520).

The lighting device control map may include information on the position of each of the plurality of switches and the position of each of the lighting devices.

The user can set the mapping relationship between each of the plurality of switches and each of the plurality of illumination devices based on the illumination device control map. For example, the user may touch a particular switch on the illuminator control map output via the user device and touch the illuminator to be controlled by the particular switch. If so, a mapping relationship between the switch and the lighting device is established and information about the set mapping relationship can be transmitted to the lighting control device. The lighting control apparatus can change the on / off state of the dip switch according to the switching of the switch based on the information on the mapping relationship.

6 is a conceptual diagram illustrating a lighting control method according to an embodiment of the present invention.

FIG. 6 illustrates a method for determining whether a failure of a lighting device or a failure of a switch is detected, and providing failure information to a user when on / off control for a specific lighting device is not performed.

Referring to FIG. 6, it can be determined whether or not the on / off state of a specific lighting apparatus is not changed by the control of the dip switch. For example, each of the illumination devices may be implemented with an illumination device operation determination sensor 600 that can sense whether light is generated by the illumination device. The illumination device operation determination sensor 600 can sense whether light is generated in the illumination device when the illumination device is set to the on state.

The lighting device operation determination sensor 600 may transmit a signal to the control unit to request the control unit to determine whether the light is not generated in the lighting apparatus set to the on state.

The control unit can determine whether the failure of the lighting apparatus or the failure of the switch is detected. Specifically, the controller may establish a connection between the illumination device and another switch to determine whether the on / off operation of the illumination device by the other switch is normally performed.

If the on / off operation of the illuminating device is normally performed after the connection of the other switch and the illuminating device, it can be determined that the switch is defective. Conversely, if the on / off operation of the illumination device is not normally performed after the connection of the other switch and the illumination device, it can be determined that the illumination device is malfunctioning.

If it is determined that the lighting device is malfunctioning, the lighting control device may send the lighting device malfunction message 620 to the user device of the user. The lighting control device may store information on the replacement time of the lighting lamp inside the lighting device, and the lighting device failure message 620 may include identification information of the nonoperating lighting device and information on the time of replacement of the bulb in the lighting device . The user can receive the illuminator failure message 620 via the user device and obtain information about the failure of the illuminator.

If it is determined that the switch is faulty, the lighting control device may send a switch fault message 640 to the user's user equipment. The lighting control device may store information about the replacement time of the lighting lamp inside the lighting device, and the switch failure message 640 may include identification information of the non-operating switch. The user can receive the switch failure message via the user device and obtain information about the failure of the switch.

In the event of a switch failure, the user can set up a mapping relationship between the switch and the lighting device, other than the failed switch, to perform control over the lighting device via another switch that has not failed.

7 and 8 are circuit diagrams showing details of the key input device of the illumination control device described above with reference to FIG.

9 and 10 are circuit diagrams showing details of the control apparatus of the illumination control apparatus described above with reference to Fig.

The method of controlling such a lighting device may be implemented in an application or may be implemented in the form of program instructions that can be executed through various computer components and recorded on a computer-readable recording medium. The computer-readable recording medium may include program commands, data files, data structures, and the like, alone or in combination.

The program instructions recorded on the computer-readable recording medium may be ones that are specially designed and configured for the present invention and are known and available to those skilled in the art of computer software.

Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like.

Examples of program instructions include machine language code such as those generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware device may be configured to operate as one or more software modules for performing the processing according to the present invention, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.

100: Key input device
110:
120: frequency division unit
130:
140:
145:
150: Control device
155:
160:
165: Deep switching section
170: switching circuit
175:
180: Lighting device

Claims (12)

In the illumination control device,
Wherein the illumination control device is configured to generate an address designation signal for controlling at least one lighting device corresponding to the switch based on an on / off operation of at least one of the plurality of switches included in the switching part, Wherein the addressing signal is generated by filtering after a frequency division procedure of a switching signal generated by a switching operation of the at least one switch and an amplification procedure of a divided frequency; And an on / off state of a dip switch connected to the at least one illuminating device corresponding to the at least one switch among the plurality of illuminating devices by receiving the address specifying signal from the key input device, And a control device for controlling the on /
The control device detects the frequency of the addressing signal, selects the at least one lighting device that matches the detected frequency, and if the DIP switch corresponding to the at least one lighting device is on, Controls one lighting device to be turned on,
Wherein the illumination control device controls each of the plurality of illumination devices by setting on / off states of the dip switches based on mapping relationship information between the plurality of illumination devices transmitted by the user device and the plurality of switches,
The user device generates a switch map based on the identification information of the plurality of switches and the position information of the plurality of switches, and generates a switch map based on the identification information of the plurality of lighting devices and the location information of the plurality of lighting devices. Generating an illumination device control map by combining the switch map and the illumination device map, generating the mapping relation information based on the illumination device control map,
Wherein the illumination control device is configured to determine whether a specific illumination device is faulty and whether a specific switch connected to the specific illumination device is faulty based on an illumination device operation judgment sensor that senses whether light of the illumination device is generated,
The determination as to whether or not the specific illumination device is faulty and whether the specific switch is faulty may include determining whether the specific illumination device is in the ON state or not, The control unit transmits a signal and transmits a signal to the control unit. The control unit sets a connection between the specific lighting device and a switch other than the specific switch for determining a failure. When the on / off operation of the specific lighting device by the other switch is normally performed, Determines that the switch is in failure, and determines that the particular lighting device is faulty if the on / off operation of the specific lighting device is not normally performed.
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