JP2011154842A - Lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting system configured so that a light source is not lighted by residual power in a dimming state not intended by a user when power supply is interrupted. <P>SOLUTION: The lighting system includes: a controller 1 and a luminaire 21 to which power is supplied from a power source AC. The controller 1 outputs a dimming signal S1 to the luminaire 21. The luminaire 21 includes: a light source 52; a power supply unit 8 which uses the power source AC as input power source and includes a capacitor; a light source drive unit 51 which uses the power supply unit 8 as input power source to light the light source 52; a control unit 3 which controls the light source drive unit 51 based on the dimming signal S1 to perform dimming-control of the light source 52; a signal detection control unit 4 which checks for input state of the dimming signal S1 and causes, upon detection of a non-input state of the dimming signal S1, the light source 52 to be lighted in a specific state; and a lighting control means which prevents, when the power supply from the power source AC to the controller 1 and the luminaire 21 is interrupted, the light source 52 from being lighted in the specific state by the residual power left in the capacitor of the power supply unit 8. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lighting device.

  2. Description of the Related Art Conventionally, there has been provided a lighting device in which a plurality of lighting fixtures are connected in series with signal lines and a dimming signal is serially transmitted between the lighting fixtures (for example, Patent Document 1).

  FIG. 9 shows a block diagram of a conventional lighting device. A conventional lighting device includes a control device 100 that uses a commercial power source AC (hereinafter abbreviated as a power source AC) as an input power source, and lighting fixtures 200 and 201. The control device 100 and the lighting fixtures 200 and 201 are serially connected by a signal line.

  The control device 100 outputs a dimming signal S1 indicating the dimming ratio to the lighting fixture 200. And the lighting fixture 200 transfers and outputs the light control signal S1 to the lighting fixture 201. FIG. Moreover, the lighting fixtures 200 and 201 are provided with a light source, and light control of the light source is performed based on the input light control signal S1.

  However, when the lighting fixture 200 breaks down or the signal line is disconnected, there is a problem that the dimming signal S1 is not input to the lighting fixture 201 and the light source of the lighting fixture 201 is turned off. Therefore, in the conventional lighting device, when the dimming signal S1 is not input to the lighting fixtures 200 and 201 for a certain period of time, the light source is forcibly turned on in a specific state (for example, full lighting).

JP 2005-158505 A

  The lighting fixtures 200 and 201 include a large-capacity capacitor such as an electrolytic capacitor inside, and even after the power supply AC is cut off, the dimming signal S1 is transferred and output for a certain period of time by the residual power of the capacitor, The light source can be turned on.

  However, there is a problem that when the power supply AC is cut off at the same time in order to turn off the lighting fixtures 200 and 201, the light source is turned on momentarily due to variations in the residual power of the lighting fixtures 200 and 201.

  FIG. 10A shows a timing chart of the residual power of the lighting fixture 200 after the power is shut off, and FIG. 10B shows a timing chart of the residual power of the lighting fixture 201 after the power is shut off.

  10 (a) and 10 (b), the power supply AC is cut off at time t0. The time during which the dimming signal S1 can be transferred and output to the lighting fixture 201 by the residual power of the lighting fixture 200 is defined as a residual relay time T1. Further, a time during which the light source can be turned on by the residual power of the lighting fixture 201 is defined as a residual lighting time T2. Further, a time from when the dimming signal S1 is not input until the light source is forcibly turned on is defined as a determination time T0a. The lighting fixture 201 receives the dimming signal S1 from time t0 to the remaining relay time T1, and performs dimming control based on the dimming signal S1. When the determination time T0a further elapses after the remaining relay time T1 elapses, the light source is forcibly turned on in a specific state.

  Therefore, there is a problem that the light source is lit in a dimming state not intended by the user at the time of power failure or when the power source AC is shut off.

  This invention is made | formed in view of the said reason, and when the power supply is interrupted | blocked, the objective is to provide the illuminating device which a light source does not light in the dimming state which a user does not intend by residual power.

  The invention of claim 1 includes a control device supplied with power from an external power source and one or more lighting fixtures, and the control device outputs a dimming signal indicating a dimming ratio to the lighting fixture. A power supply unit with an external power supply as an input power supply and a capacitor; a light source drive unit that turns on the light source with the power supply part as an input power supply; and a light source drive unit that controls the light source drive unit based on a dimming signal with the power supply part as an input power supply. The first control unit that performs dimming control of the light source and the power source unit as an input power source detects the dimming signal input state, and when the dimming signal is not input, the light source is turned on in a specific state And a lighting control means for preventing the light source from being lit in the specific state by the residual power remaining in the capacitor of the power supply when the power supply from the external power supply to the control device and the lighting fixture is interrupted. It is characterized by that.

  According to this invention, the lighting control means does not light the light source in a specific state with the residual power remaining in the capacitor of the power supply unit. Therefore, even if the power supply from the external power source to the control device and the lighting fixture is interrupted and the dimming signal is not input to the lighting fixture, the light source is not turned on by the residual power.

  According to a second aspect of the present invention, in the first aspect of the present invention, the lighting control unit includes a power source detection unit that detects a power cutoff from the external power source to the lighting fixture. When the power cut-off is detected, the second control unit is configured not to turn on the light source in the specific state even when the dimming signal is not input.

  According to the present invention, when the power detection means detects that the power supply from the external power supply is cut off, the signal detection unit does not light the light source in the specific state even if the dimming signal is not input. Therefore, the light source is not turned on by the residual power.

  According to a third aspect of the present invention, in the first aspect of the present invention, the power control unit includes a power cutoff unit that turns on / off the power supply from the power source unit to the light source driving unit, and the lighting control unit includes the power source detection unit When detecting a power cutoff from the power source to the lighting fixture, the power cutoff unit is configured to shut off the power supply from the power source unit to the light source driving unit and turn off the light source.

  According to the present invention, when the power detection means detects that the power supply from the external power supply is cut off, the power cut-off means cuts off the power supply from the power supply section to the power supply drive section and turns off the light source. Therefore, the light source is not turned on by the residual power of the power supply unit.

  According to a fourth aspect of the present invention, in the third aspect of the invention, the power control unit further includes a power cutoff unit that turns on / off power supply from the power source unit to the light source driving unit and the first control unit. When the power source detection unit detects a power cutoff from the external power source to the lighting fixture, the power source cutoff unit supplies power from the power source unit to the light source driving unit, from the power source unit to the first control unit. It is comprised by interrupting | blocking ahead of the power supply to a.

  According to this invention, when the power detection means detects that the power supply from the external power supply has been cut off, the power cut-off means cuts off the power supply to the light source driving section before turning off the light source. . Therefore, the light source is not turned on by the residual power of the power supply unit.

  The invention according to claim 5 is the invention according to any one of claims 2 to 4, wherein the external power supply outputs an alternating voltage, and the power supply unit converts the alternating voltage to generate a direct voltage. The power supply detecting means determines that the power supply from the external power supply to the lighting apparatus is interrupted when the DC voltage becomes a predetermined value or less.

  According to the present invention, the power supply detection means detects the DC voltage output from the power supply unit, and determines that the power supply from the external power supply is cut off when the DC voltage becomes a predetermined value or less. Therefore, the configuration of the power supply detection unit can be simplified.

  According to a sixth aspect of the present invention, in the first aspect of the invention, the lighting apparatus includes a relay unit that relays the dimming signal to another lighting apparatus, and the second control unit after the dimming signal is not input. Determines the time until it is determined that the dimming signal is not input, the determination time, the time when the relay means can relay the dimming signal by the residual power of the power supply unit, the residual relay time, and the residual power of the power supply unit The remaining lighting time is the shortest remaining relay time among a plurality of lighting fixtures in which the dimming signal is transmitted in series via the relay means, with the time during which the light source driving unit can operate as the residual lighting time. The remaining lighting time of the luminaire having the longest relay time and the remaining lighting time is set as the longest lighting time, and the lighting control means has a time longer than the time obtained by subtracting the shortest relay time from the longest lighting time. Set as Characterized in that it is constituted by Rukoto.

  According to the present invention, the determination time from when the dimming signal is not input until it is determined that the dimming signal is not input is set longer than the time obtained by subtracting the shortest relay time from the longest lighting time. Before the power supply from the external power supply is cut off and the dimming signal is no longer input and before determining that it is in the no-input state, the residual power is reduced and the light source cannot be turned on. It will not light up. The determination time is set using the longest lighting time and the shortest relay time among the plurality of lighting fixtures. Accordingly, even if there is a variation in the residual power among the lighting fixtures, it is possible to prevent the light source from being turned on in a specific state due to the residual power by setting one determination time.

  According to a seventh aspect of the present invention, in the first aspect of the present invention, before the power supply from the external power source to the control device and the lighting fixture is cut off, a cutoff notice signal is output from the control device to the lighting fixture. The control unit detects a cutoff notice signal, and the lighting control means turns on the light source even if the dimming signal is not input after the second control part detects the cutoff notice signal. It is characterized by not being lit in a specific state.

  According to this invention, when the power supply is cut off, the control device outputs a cutoff notice signal, and when the second control unit detects the cutoff notice signal, even if the dimming signal is not input, Do not turn on the light source in a specific state. Accordingly, when the power supply is cut off, the light source is not turned on by the residual power.

  As described above, the present invention has an effect that, when the power supply is shut off, the light source can be prevented from being turned on in a dimming state that is not intended by the user due to the residual power.

It is a figure which shows the block configuration of the lighting fixture of Embodiment 1 of this invention. It is a figure which shows the block configuration of the illuminating device of this invention. It is a figure which shows the block configuration of the lighting fixture of Embodiment 2 same as the above. It is a figure which shows the block configuration of the lighting fixture of Embodiment 3 same as the above. It is a figure which shows the block configuration of the lighting fixture of Embodiment 4 same as the above. (A) (b) It is a figure which shows the timing chart by the residual electric power same as the above. It is a figure which shows the block configuration of the 2nd lighting fixture of Embodiment 4 same as the above. It is a figure which shows the circuit structure of the 2nd lighting fixture of Embodiment 4 same as the above. It is a figure which shows the block configuration of the conventional illuminating device. (A) (b) It is a figure which shows the timing chart by the residual electric power same as the above.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 2 shows a block diagram of the lighting device of the present invention. The lighting device according to the present invention includes a control device 1 and a plurality of lighting fixtures 2.

  The control device 1 uses a commercial power supply AC (hereinafter abbreviated as power supply AC) as an input power supply, and is supplied with power through a switch SW1. The switch SW1 turns on / off the power supply from the power supply AC to the control device 1. The control device 1 outputs a dimming signal S1 to the lighting fixture 2 via the signal line.

  The lighting fixture 2 uses the power source AC as an input power source and is supplied with power through the switch SW2. The switch SW2 turns on / off the power supply from the power source AC to the lighting fixture 2.

  Moreover, the control apparatus 1 and each lighting fixture 2 are serially connected by the signal wire | line. And if the light control signal S1 output from the control apparatus 1 is input into the lighting fixture 2, the lighting fixture 2 will transfer-output the light control signal S1 to the other connected lighting fixture 2. FIG.

  In FIG. 1, the block block diagram of the lighting fixture 21 of Embodiment 1 is shown.

  The lighting fixture 21 of this embodiment includes a control unit 3 (first control unit), a signal detection control unit 4 (second control unit), a light source unit 5, a signal input unit 6, and a signal output unit 7. And a power supply unit 8 and a power cutoff detection unit 9.

  The power supply unit 8 includes an AC / DC converter (not shown) that converts the AC voltage Vac output from the power supply AC into a DC voltage Vdc. The control unit 3, the signal detection control unit 4, the light source unit 5, the signal input unit 6, and the signal output unit 7 use the DC voltage Vdc generated by the power supply unit 8 as an input power supply. The power supply unit 8 includes a large capacity capacitor (not shown) such as an electrolytic capacitor. Therefore, even if the power supply from the power supply AC is cut off, the DC voltage Vdc can be output for a certain period of time by the residual power.

  The signal input unit 6 is an input interface to which a dimming signal S1 output from the control device 1 or another lighting fixture 21 is input. The signal input unit 6 converts the input dimming signal S1 into a dimming signal S1a that can be handled by the control unit 3, and outputs the dimming signal S1a to the control unit 3. The dimming ratios indicated by the dimming signal S1 and the dimming signal S1a are the same.

  The control unit 3 generates a dimming control signal S2 having an output level based on the dimming ratio indicated by the dimming signal S1a output from the signal input unit 6, and outputs the dimming control signal S2 to the light source unit 5. The light source unit 5 includes a light source driving unit 51 and a light source 52 provided in the input stage. When the dimming control signal S2 is output from the control unit 3 to the light source driving unit 51, the light source driving unit 51 performs dimming control of the light source 52 based on the output level of the dimming control signal S2.

  Further, the control unit 3 transfers and outputs the dimming signal S1a output from the signal input unit 6 to the signal output unit 7. The signal output unit 7 is an output interface that outputs a dimming signal S <b> 1 to another lighting fixture 21. The signal output unit 7 converts the dimming signal S1a output from the control unit 3 into the dimming signal S1 and outputs the dimming signal S1 to the other lighting fixtures 21. That is, the dimming signal S <b> 1 input to the lighting fixture 21 is transferred and output to another lighting fixture 21 via the signal input unit 6, the control unit 3, and the signal output unit 7.

  Further, the control unit 3 outputs the dimming signal S1a to the signal detection control unit 4. The signal detection control unit 4 has a timer function, and outputs a forced signal S3 to the light source unit 5 when the dimming signal S1a is not input for a certain period of time. When the forcing signal S3 is output to the light source driving unit 51, the light source driving unit 51 forcibly turns on the light source 52 in a specific state. It should be noted that the specific state indicates a full lighting state or a blinking state of the light source 52. Accordingly, when the signal line that transmits the dimming signal S1 is disconnected, or when the lighting fixture 21 provided in the previous stage breaks down and the dimming signal S1 is not input to the lighting fixture 21, the light source 52 is It can be prevented from turning off.

  Further, the power shutoff detection unit 9 is applied with an AC voltage Vac from the power source AC. When the power supply AC is shut off and the power supply is stopped, the power shutoff detection unit 9 outputs a shutoff detection signal S4 indicating power shutoff to the control unit 3.

  The controller 3 ignores the dimming signal S1a input after the interruption detection signal S4 is input, and outputs the dimming control signal S2 using the dimming signal S1a immediately before the interruption detection signal S4 is input. Then, the light source 52 is dimmed and controlled. Further, the control unit 3 outputs the dimming signal S1a immediately before the interruption detection signal S4 is input to the signal output unit 7 and the signal detection control unit 4. Therefore, since the signal detection control unit 4 does not detect the non-input state of the dimming signal S1a due to the power supply AC being cut off, the forcing signal S3 is not output to the light source driving unit 51. In the present embodiment, when the shut-off detection signal S4 is output, the control unit 3 may output the dimming control signal S2 indicating turning off to turn off the light source 52.

  With the above configuration, when the power source AC is shut off, the light source 52 can be prevented from being lit in a specific state not intended by the user due to the residual power of the power source unit 8.

  Further, the power interruption detection unit 9 may be provided at the output stage of the power supply unit 8. The power cutoff detection unit 9 detects the DC voltage Vdc output from the power supply unit 8. When the DC voltage Vdc is equal to or lower than a predetermined value, the power cutoff detection unit 9 determines that the power supply from the power source AC is cut off, and outputs a cutoff detection signal S4 to the control unit 3. Since the power shutdown detector 9 detects the DC voltage Vdc, the configuration of the power shutdown detector 9 can be simplified.

(Embodiment 2)
In FIG. 3, the block block diagram of the lighting fixture 22 of Embodiment 2 is shown. The lighting fixture 22 of the present embodiment includes a control unit 3, a signal detection control unit 4, a light source unit 5, a signal input unit 6, a signal output unit 7, a power supply unit 8, and a relay 10. Yes. The difference from the lighting fixture 21 described in the first embodiment is that the power cut-off detection unit 9 is not provided, but the relay 10 is provided. In addition, the same code | symbol is attached | subjected to the structure same as the lighting fixture 21 demonstrated in Embodiment 1, and description is abbreviate | omitted.

  The relay 10 is a mechanical AC relay, and includes an exciting coil 10a (power supply detection means) and a contact 10b (power supply cutoff means). The exciting coil 10a is connected to a power source AC. The contact 10 b is a contact type, and is connected between the power supply unit 8 and the light source unit 5. The relay 10 is configured as described above, and when the AC voltage Vac is applied to the exciting coil 10a, the contact 10b is turned on, and the power supply unit 8 and the light source unit 5 are conducted. Further, when the power supply AC is cut off and the AC voltage Vac is no longer applied to the exciting coil 10a, the contact 10b is turned off, the power supply unit 8 and the light source unit 5 are cut off, and the light source 52 is turned off. Therefore, even if the signal detection control unit 4 detects that the dimming signal S1a is not input and outputs the forcing signal S3, the light source 52 and the power source unit 8 are shut off, so the light source 52 is not turned on.

  In the illumination device of the present embodiment having the above configuration, the relay 10 shuts off the power supply from the power supply unit 8 to the light source unit 5 at the time of a power failure or when the power supply AC is cut off, and turns off the light source 52. Therefore, the light source 52 is not lit in a specific state due to the residual power of the power supply unit 8.

  Moreover, since the relay 10 cuts off the power supply from the power supply unit 8 to the light source unit 5 as soon as the power supply AC is cut off, there is no influence due to variations in the residual power of the lighting fixtures 22.

  In this embodiment, a mechanical AC relay is used as the relay 10, but a semiconductor AC relay or an AC relay that combines a mechanical type and a semiconductor type may be used.

  Moreover, it is good also as a structure provided with the relay (not shown) which has the contact (not shown) which turns on / off the power supply from the power supply part 8 to the control part 3. FIG. When the power supply AC is cut off, the power supply from the power supply unit 8 to the control unit 3 is cut off after the contact 10b is turned off and the power supply unit 8 cuts off the power supply from the light source unit 5 first. As a result, the power supply to the light source unit 5 can be more reliably cut off, so that the light source 52 is not lit in a specific state due to the residual power.

(Embodiment 3)
In FIG. 4, the block block diagram of the lighting fixture 23 of Embodiment 3 is shown. The lighting fixture 23 of the present embodiment includes a control unit 3a, a signal detection control unit 4a, a light source unit 5, a signal input unit 6, a signal output unit 7, and a power supply unit 8. In addition, the same code | symbol is attached | subjected to the structure same as the lighting fixture 21 demonstrated in Embodiment 1, and description is abbreviate | omitted.

  The control unit 3 a according to the present embodiment is configured by a microcomputer or the like, and a dimming signal S 1 ′ composed of a digital signal is input via the signal input unit 6. Further, in the lighting device of the present embodiment, when the power source AC is shut off, the control device 1 outputs a power cutoff notice signal S5 (SHUT DOWN signal) composed of a digital signal in advance. The dimming signal S1 ′ composed of a digital signal indicates the dimming ratio by repeating a high level and a low level in a certain pattern. Further, when the control unit 3a is faulty or when the signal line is abnormal, such as disconnection, the output level of the dimming signal S1 ′ transferred and output by the control unit 3a does not change. The signal detection control unit 4a detects the dimming signal S1 ′ output from the control unit 3a, determines that it is abnormal if the output level of the dimming signal S1 ′ does not change for a certain period of time, and sends a forced signal to the light source unit 5. S3 is output and the light source 52 is turned on in a specific state.

  When the power shutdown notice signal S5 is input to the control unit 3a via the signal input unit 6, the control unit 3a outputs a dimming control signal S2 having an output level indicating turn-off to the light source driving unit 51, and the light source 52 Turn off the light. In addition, the control unit 3a outputs a power cutoff notice signal S5 to the signal output unit 7, and forwards and outputs the power notice signal S5 to the other lighting fixtures 23. Further, the control unit 3a outputs a power-off notice signal S5 to the signal detection control unit 4a. When the power cutoff notice signal S5 is input, the signal detection control unit 4a does not output the forced signal S3 to the light source unit 5 even if the dimming signal S1 ′ is not input (the output level does not change). . Therefore, even if the dimming signal S1 ′ is not input after the power source AC is shut off, it is possible to prevent the light source 52 from being lit in a specific state due to the residual power of the power source unit 8.

(Embodiment 4)
In FIG. 5, the block block diagram of the lighting fixture 24 of Embodiment 4 is shown. The lighting fixture 24 of the present embodiment includes a control unit 3, a signal detection control unit 4 b, a light source unit 5, a signal input unit 6, a signal output unit 7, and a power supply unit 8. In addition, the same code | symbol is attached | subjected to the structure same as the lighting fixture 21 demonstrated in Embodiment 1, and description is abbreviate | omitted.

  As shown in FIG. 2, a plurality of lighting fixtures 24 are connected in series, and a front lighting fixture 24 a close to the control device 1 and a lighting fixture 24 b connected downstream of the lighting fixture 24 a are provided.

  FIG. 6A shows a timing chart of the residual power of the luminaire 24a after the power source AC is cut off, and FIG. 6B shows a timing chart of the residual power of the luminaire 24b after the power source AC is cut off.

6 (a) and 6 (b), the power supply AC is cut off at time t0. In addition, the luminaires 24a and 24b vary in residual power, and the residual power of the luminaire 24a is less than the residual power of the luminaire 24b. The time during which the controller 3 can transfer and output the dimming signal S1 by the residual power of the lighting fixture 24a is defined as a residual relay time T1. Further, a time during which the light source 52 can be turned on by the residual power of the lighting fixture 24b is defined as a residual lighting time T2. Further, a time until the signal detection control unit 4b determines that the dimming signal 1a is not input is set as a determination time T0.
Here, the signal detection control unit 4b of the present embodiment is set so that the determination time T0 satisfies T0 <T2-T1. When the power source AC is cut off by setting the determination time T0 as described above, the remaining lighting time T2 elapses before the remaining relay time T1 and the determination time T0 elapse from the time t0 in the lighting fixture 24b. ing. Therefore, even if the forcing signal S3 is output from the signal detection control unit 4b, the residual power for turning on the light source 52 is not supplied, so the light source 52 does not turn on in a specific state.

  Further, a case where a plurality of lighting fixtures 24 are connected will be described. Of the plurality of connected lighting fixtures 24, the residual relay time T1 of the lighting fixture 24 with the shortest residual relay time T1 is defined as the shortest relay time T1min. Moreover, let the residual lighting time T2 of the lighting fixture 24 with the longest residual lighting time T2 among the some lighting fixtures 24 be the longest lighting time T2max. Then, the determination time T0 set in the signal detection control unit 4b is set to T0 <T2max−T1min. Thereby, even if the residual power of each lighting fixture 24 varies, the determination time T0 common to each lighting fixture 24 can be set, and lighting of the light source 52 by residual power can be prevented.

  Next, the lighting fixture 25 corresponding to the dimming signal S1 ′ composed of digital signals is shown in FIGS. FIG. 7 is a block configuration diagram of the lighting fixture 25. FIG. 8 is a schematic circuit configuration diagram of the lighting fixture 25.

  The lighting fixture 25 includes a control unit 3a, a signal detection control unit 4c, a light source unit 5, a signal input unit 6, a signal output unit 7, and a power supply unit 8. In addition, the same code | symbol is attached | subjected to the structure same as the lighting fixture 21 demonstrated in Embodiment 1, and description is abbreviate | omitted.

  The signal detection control unit 4c includes a reset IC 41 with a delay function (hereinafter abbreviated as a reset IC) and a forced signal output unit 42. The reset IC 41 detects the dimming signal S1 ′ output from the control unit 3a, and determines that it is abnormal if the output level of the dimming signal S1 ′ does not change for a certain time or more. Then, the reset IC 41 outputs a forcing signal S3 to the light source unit 5 through the forcing signal output unit 42, and turns on the light source 52 in a specific state. Further, as shown in FIG. 8, the reset IC 41 includes a capacitor C1, and controls the determination time T0 until it is determined to be abnormal by changing the capacitance of the capacitor C1.

  As described above, by setting the determination time T0 as T0 <T2max−T1min, it is possible to prevent the light source 52 from being lit in a specific state due to the residual power when the power source AC is shut off.

  Moreover, in this embodiment, it is not necessary to provide the power interruption detection part 9 and the relay 10. FIG. Further, there is no need for special software development for causing the control unit 3 to respond to the power shut-off notice signal S5. In addition, in the state where the dimming signal S <b> 1 indicating turning off is output, even if the power failure or the power source AC is interrupted, the light source 52 is not turned on in a specific state due to the remaining power of the power supply unit 8. Therefore, an illumination device that can be used for landscape illumination or the like can be provided at low cost.

DESCRIPTION OF SYMBOLS 3 Control part 4 Signal detection control part 5 Light source part 6 Signal input part 7 Signal output part 8 Power supply part 9 Power supply interruption | blocking detection part 21 Lighting fixture 51 Light source drive part 52 Light source S1 Dimming signal S2 Dimming control signal S3 Forcing signal S4 interruption Detection signal

Claims (7)

A control device powered by an external power supply and one or more lighting fixtures;
The control device outputs a dimming signal indicating the dimming ratio to the lighting fixture,
The luminaire includes a light source, a power source unit including an external power source as an input power source and a capacitor, a light source driving unit that turns on the light source using the power source unit as an input power source, and a light source based on a dimming signal using the power source unit as an input power source. A first control unit that controls the light source by controlling the drive unit, and a light source when the power source unit is used as an input power source to detect the input state of the dimming signal and detect that the dimming signal is not input A second control unit that lights the light source in a specific state, and a light source that does not light the light source in the specific state due to residual power remaining in the capacitor of the power supply unit when power supply from the external power source to the control device and the lighting fixture is interrupted An illumination device comprising a control means. Comprising a power source detection means for detecting a power cutoff from the external power source to the lighting fixture,
When the power supply detection means detects the power cutoff from the external power supply to the lighting fixture, the second control unit does not turn on the light source in the specific state even if the dimming signal is not input. The lighting device according to claim 1, comprising: A power cut-off means for turning on / off the power supply from the power supply unit to the light source drive unit;
The lighting control means turns off the light source by shutting off the power supply from the power supply section to the light source driving section when the power detection means detects the power cutoff from the external power source to the lighting fixture. The illuminating device according to claim 1, comprising: A power cut-off means for turning on / off the power supply from the power supply unit to the light source driving unit and the first control unit;
The lighting control means detects that the power supply detecting means detects power supply cutoff from the external power supply to the lighting fixture, and the power supply cutoff means supplies power from the power supply part to the light source driving part from the power supply part. The lighting device according to claim 3, wherein the lighting device is configured to be shut off before supplying power to the first control unit. The external power supply outputs an AC voltage, and the power supply unit converts the AC voltage to generate a DC voltage,
5. The lighting device according to claim 2, wherein the power source detection unit determines that power supply from an external power source to the lighting fixture is interrupted when the DC voltage becomes a predetermined value or less. 6. . The lighting fixture includes relay means for relaying the dimming signal to another lighting fixture,
The time until the second control unit determines that the dimming signal is not input after the dimming signal is not input is a determination time. The relay means relays the dimming signal according to the residual power of the power supply unit. The possible time is the residual relay time, the time that the light source drive unit can operate with the residual power of the power supply unit is the residual lighting time,
Among a plurality of lighting fixtures whose dimming signals are transmitted in series via the relay means, the residual relay time of the lighting fixture with the shortest residual relay time is the shortest relay time and the residual lighting fixture with the longest residual lighting time Let the lighting time be the longest lighting time,
The lighting device according to claim 1, wherein the lighting control unit is configured to set the determination time to be longer than a time obtained by subtracting the shortest relay time from the longest lighting time.   Before shutting off the power supply from the external power source to the control device and the lighting fixture, the control device outputs a cutoff warning signal to the lighting fixture, and the second control unit detects the cutoff warning signal, The lighting control means is configured by not lighting the light source in the specific state even when the dimming signal is not input after the second control unit detects the cutoff notice signal. The lighting device according to claim 1.

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