JP2009081005A - Detection device of light source state, and lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a detection device of light source state capable of displaying a light-control state of a lamp (a light source) and whether an unlit state of the lamp is due to its life, in a simple structure. <P>SOLUTION: A lighting state display device 110 is provided with a plurality of LEDs, a lamp detection circuit 90 for detecting whether a discharge lamp 42 is mounted, a lamp-end-of-life/non-lighting detection circuit 95 for detecting whether the discharge lamp 42 is at end of life, and whether it is a non-lit lamp, a microcomputer 80 for detecting a light-control state of the discharge lamp, whether the discharge lamp is mounted or not, whether the discharge lamp is at end of life, and whether the discharge lamp is an unlit lamp, as a state of the discharge lamp, and making the LEDs emit light in accordance with the detected state, and optical fibers f1 to f4 inputted with light emitted by the LEDs and guiding the inputted light to output it. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a light source state detection device that detects and displays the state of a light source.

  In recent years, energy conservation efforts have been carried out in various forms in each industry. The lighting device (lighting fixture) is always installed in the facility and consumes most of the electric power used in the facility. For this reason, in order to raise an energy-saving effect, it is desirable to set the illumination intensity of an illuminating device appropriately. Up to now, an energy saving effect has been obtained by installing a lighting device having a continuous light control function and a step light control function (for example, Patent Document 1).

As described above, it is difficult to determine the lighting state of a luminaire that has been continuously or step-dimmed, that is, the brightness of a lit lamp (light source) simply by looking at the luminaire on which the lamp is mounted. . Further, if the discharge lamp is not lit, it is difficult to determine whether the life of the discharge lamp is the cause or whether it is a defective product by simply observing the appearance of the lighting fixture.
JP 2003-133085 A

  An object of the present invention is to provide a light source state detection device that has a simple configuration and can display whether a lamp is dimming or whether a lamp is not lit due to its lifetime.

The light source state detection device of this invention is
A light emitting element that emits light;
A light emission control unit for detecting a state of a light source and causing the light emitting element to emit light based on the detected state;
And a light guide unit configured to input light emitted from the light emitting element, guide the input light, and output the light.

  According to the present invention, it is possible to provide a light source state detection device that has a simple configuration and can display whether the lamp dimming state or the lamp non-lighting is due to the lifetime.

Embodiment 1 FIG.
The first embodiment will be described with reference to FIGS. In the first embodiment, the state of the discharge lamp (light source) is detected, a light emitting diode (hereinafter also referred to as LED) is turned on based on the detection result, and the light emitted from the LED is guided by an optical fiber (light guide unit). The present invention relates to a state display device (light source state detection device).

  FIG. 1 is a diagram for explaining the inconvenience of wiring in a display device using LEDs. FIG. 1 shows a state of a discharge lamp, in which a display LED connection terminal 250 is provided for a discharge lamp lighting device with a dimming control function, and a display unit composed of LEDs by wiring is connected to the outside of a lighting fixture. The case where it provided in is shown. In the configuration of FIG. 1, not only the number of wires and terminals are increased, but also it is difficult to fix the wires and insulate the LED and the metal lighting fixture, and the cost becomes high.

  FIG. 2 is a diagram illustrating the illumination system 1000 according to the first embodiment. The illumination system 1000 includes luminaires 200a to 200d capable of dimming control of lamps (discharge lamps) mounted on the illumination system 1000. As will be described later, each lighting fixture includes a discharge lamp lighting device 100 that can set a predetermined dimming rate by a “predetermined ON / OFF operation” of the power switch 2. A lighting state display device that displays the state of the discharge lamp including the output state is provided. When each lighting fixture is set to a dimming rate by “predetermined ON / OFF operation”, a light indicating the set state is provided at the end of the optical fiber.

  FIG. 3 is a simplified view of, for example, the lighting fixture 200a shown in FIG. As shown in FIG. 3, a lamp (discharge lamp) is mounted on the lamp socket 201a. The ends of the four optical fibers are guided to the reflection plate 213a of the lighting fixture 200a.

  FIG. 4 is a diagram showing a circuit configuration of the discharge lamp lighting device 100 and a lighting state display device 110 incorporated in the discharge lamp lighting device 100. As described above, each of the lighting fixtures 200a and the like in FIG. 2 includes the discharge lamp lighting device 100. FIG. 4 shows a case where the discharge lamp lighting device 100 included in the lighting fixture 200a is extracted. In the following description, the discharge lamp lighting device 100 provided in the lighting fixture 200a is assumed.

  Next, the configuration of the discharge lamp lighting device 100 and the lighting state display device 110 will be described with reference to FIG. The feature of the present embodiment is particularly in the lighting state display device 110.

(Configuration of discharge lamp lighting device 100)
First, the discharge lamp lighting device 100 will be described. The discharge lamp lighting device 100 includes a rectifier circuit 10, an active filter circuit 20, an inverter circuit 30, a load circuit 40, a control power supply circuit 50, a power supply synchronization circuit 60, a drive circuit 70, a microcomputer 80 including a nonvolatile memory 81, a lamp A detection circuit 90 and a lamp life end / non-point detection circuit 95 are provided. Hereinafter, the microcomputer may be referred to as a microcomputer.
(1) The rectifier circuit 10 is a diode bridge. The rectifier circuit 10 is a circuit that rectifies the power supply voltage and removes noise.
(2) The active filter circuit 20 includes a choke coil 21, a diode 22, a capacitor 23, and a switching element 24. The active filter circuit 20 is a circuit that boosts the power supply voltage to a predetermined DC voltage and shapes the input current waveform to improve the power factor by switching with the switching element 24 along the power supply voltage waveform.
(3) The inverter circuit 30 generates a high-frequency voltage by alternately switching the switching elements 31 and 32 with the reverse polarity voltage output from the drive circuit 70 from the DC voltage boosted by the active filter circuit 20. Circuit.
(4) The load circuit 40 includes an inductor 41, a discharge lamp 42, capacitors 43 and 45, and a resistor 44. The load circuit 40 is a circuit that turns on the discharge lamp 42 (sometimes referred to as a lamp) using the resonance of the inductor 41 and the capacitor 43.
(5) The drive circuit 70 is a circuit that alternately switches the switching elements 31 and 32 of the inverter circuit 30 based on a control signal output from the microcomputer 80.
(6) The power supply synchronization circuit 60 is a circuit that detects ON / OFF of the commercial power supply (AC power supply 1) (ON / OFF of the power switch 2).
(7) The lamp detection circuit 90 is a circuit that detects the presence or absence of a lamp from the commercial power supply (AC power supply 1) through the resistor 33, the inductor 41, the lamp filament, the resistor 44, and the lamp filament. The lamp detection circuit 90 outputs an H (High) level signal when the lamp (discharge lamp 42) is mounted, and an L (Low) level signal when the lamp (discharge lamp 42) is not mounted. Is output. The microcomputer 80 can determine whether or not the discharge lamp 42 is mounted by inputting an H level signal or an L level signal from the lamp detection circuit 90.
(8) The lamp end-of-life / non-conformity detection circuit 95 is a starting voltage when the lamp (discharge lamp 42) reaches the end of its life and is rectified and lit, or when a lamp containing air is installed due to a manufacturing defect. This is a circuit for detecting from the voltage change of the capacitor 43 that the lamp does not light up even when a voltage is applied. The lamp life end / point detection circuit 95
When the end of lamp life or non-lighting is detected, a detection signal for the end of lamp life and non-lighting is output to the microcomputer 80.
(9) The control power supply circuit 50 is a power supply circuit that drives the microcomputer 80. The control power supply circuit 50 is a circuit that holds power that allows the microcomputer 80 to operate for about 5 seconds even after the commercial power supply (AC power supply 1) is turned off.
(10) The microcomputer 80 performs frequency control of the inverter circuit 30 and determination of the power ON / OFF signal sent from the power supply synchronization circuit 60. In the discharge lamp lighting device 100, the microcomputer 80 detects the ON / OFF operation of the power switch 2, sets the discharge lamp output mode corresponding to the ON / OFF operation, and lights the discharge lamp in the set output mode. . Specifically, when the microcomputer 80 detects an ON / OFF operation of a predetermined power switch 2 that has been programmed, the microcomputer 80 sets a predetermined output mode in accordance with a program incorporated in the program in advance, and corresponds to the set output mode. A “control signal” is output to the drive circuit 70. When a control signal is input from the microcomputer 80, the drive circuit 70 drives the switching elements 31 and 32 of the inverter circuit 30 according to the control signal. As a result, the inverter circuit 30 oscillates at a predetermined oscillation frequency, and the discharge lamp lights up with an output corresponding to the control signal. Thereby, the light control of the discharge lamp 42 is controlled.

(Dimming control method by microcomputer 80)
A dimming control method by the microcomputer 80 will be described with reference to FIG. As shown in FIG. 5, a predetermined operation of the power switch 2 is performed in the operating state of the discharge lamp lighting device 100. Here, “predetermined operation of the power switch 2” means, as shown in FIG. 5, “OFF within 0.1 s to 3 s” (A) and then “ON within 0.1 s to 3 s” (B). Further, the operation of “OFF within 0.1 s to 3 s” (C) is then referred to. By performing this “predetermined operation of the power switch 2”, a predetermined output setting is obtained after 3 seconds (after the operation (C)). The operation of the microcomputer 80 will be described as follows. The power supply synchronization circuit 60 detects ON / OFF of the power switch 2 and outputs a signal corresponding to ON / OFF to the microcomputer 80. The microcomputer 80 determines whether the “predetermined operation of the power switch 2” shown in FIG. If it is determined that “the predetermined operation of the power switch 2”, the microcomputer 80 generates a control signal corresponding to a preset dimming rate when 3 seconds elapse after the operation (C) ends. Output to the drive circuit 70, and the drive circuit 70 drives the inverter circuit 30. In this case, the microcomputer 80 stores a plurality of dimming rates in the nonvolatile memory 81 in advance, generates a control signal according to the dimming rates, and outputs the control signal to the drive circuit 70. For example, the microcomputer 80 stores three output modes of all light (100%), medium output (70%), and low output (40%), each time “predetermined operation of the power switch 2” is detected. The dimming rate is all light (100%), medium power (70%), low power (40%), all light (100%), medium power (70%), low power (40%), and so on. Set to circulate.

(Configuration of lighting state display device 110)
As shown in FIG. 4, the lighting state display device 110 includes a microcomputer 80 (light emission control device), a lamp detection circuit 90, a lamp life end / unspot detection circuit 95, a plurality of LEDs 1 to 4 (light emitting elements), and each LED. Provided with plastic optical fibers f1 to f4 (light guides). The resistor connected to the LED is a current limiting resistor.

(Operation of lighting state display device 110: display of dimming rate)
In the case of FIG. 4, the microcomputer 80 serves as both dimming control and LED light emission control. The microcomputer 80 sets the output of the discharge lamp (discharge lamp state) to a certain output mode (dimming rate) by detecting the “predetermined operation of the power switch 2”. Therefore, since the microcomputer 80 (light emission control unit) knows the set output mode, the LED 1 emits light if it is high output (all light), the LED 2 emits light if it is medium output, and if it is low output. The LED 3 is caused to emit light. Further, the microcomputer 80 causes the LED 4 to emit light only for a short time after three seconds have elapsed after the “predetermined operation of the power switch 2” is performed, in order to indicate that the setting of the predetermined output mode has been completed.

(Operation 2 of lighting state display device 110: Display of lamp not mounted, lamp life, lamp not lit)
When the lamp detection circuit 90 detects “no lamp”, that is, when an L level signal is input from the lamp detection circuit 90, the microcomputer 80 (light emission control unit) causes the LED 1 to “blink”, for example. , “Without lamp” is displayed. Further, the microcomputer 80 (light emission control unit) sends a signal corresponding to the end of lamp life or lamp non-lighting from the end of lamp life / spot detection circuit 95 when the lamp life end / spot detection circuit 95 operates. Is input, for example, by blinking LED2.

(Light guiding with plastic optical fiber)
About each LED, the plastic optical fiber end part which is the input part of the emitted light of LED is arrange | positioned so that the resin part of LED may be opposed (after-mentioned FIG. 7, FIG. 8, etc.). Therefore, the light emitted from the LED is input from the plastic optical fiber end (one end) and output from the other end of the plastic optical fiber. Thereby, the light of LED arrange | positioned at the discharge lamp lighting device can be guided outside the lighting fixture (outside the reflector).

(Plastic optical fiber plug-in)
6-8 is a figure which shows the mounting state to the discharge lamp lighting device 100 of the lighting state display apparatus 110. FIG. FIG. 7 is a view in the direction of arrow A in FIG. In FIG. 7, the LED mounting part is partially shown as a sectional view, and the reflecting plate 213 a is also shown as a section. 8 is a cross-sectional view taken along the line BB in FIG. In FIG. 8, the LED and the optical fiber are not shown in cross section. As shown in FIG. 3, FIG. 8, etc., the discharge lamp lighting device case cover 212a is covered with a reflector 213a. The LED is mounted inside the discharge lamp lighting device case cover 212a. The LEDs 1 to 4 are mounted on the discharge lamp lighting device printed circuit board 211a of the discharge lamp lighting device 100 (light source lighting circuit), and the plastic optical fibers f1 to f4 are attached to the discharge lamp lighting device case cover 212a of the discharge lamp lighting device 100. H1 to H4 are provided, and the plastic optical fibers f1 to f4 are introduced into the discharge lamp lighting device 100 from the mounting holes H1 to H4, and are shown to be coupled to the respective LEDs.

(First optical fiber holder 410)
FIG. 9 shows a “detailed” mounting structure diagram of the plastic optical fiber. By using the “first optical fiber holder 410” (cover side guide), the end of the plastic optical fiber f1 is coupled to the LED 1 and the plastic optical fiber f1 is held. That is, the “first optical fiber holder 410” is attached to the discharge lamp lighting device case cover 212a by being inserted into the mounting hole H1 in the direction from the outside to the inside of the discharge lamp lighting device case cover 212a. Then, by inserting the end of the plastic optical fiber f1 into the first side holder hole H11 of the first optical fiber holder 410, it is mounted on the discharge lamp lighting device printed board 211a inside the discharge lamp lighting device case cover 212a. The formed LED 1 and the end of the plastic optical fiber f1 can be coupled. As described above, the “first optical fiber holder 410” holds the plastic optical fiber f1 and also the plastic optical fiber f1 through the first side holder hole H11 from the outside to the inside of the discharge lamp lighting device case cover 212a. By inserting, the end of the plastic optical fiber f1 can be held at a position where the light emission of the LED 1 is the strongest.

(Second optical fiber holder 420)
The other end (reflector side) of the plastic optical fiber f1 is held by the “second optical fiber holder 420” (reflector side guide part). The “second optical fiber holder 420” is inserted into the optical fiber attachment hole H21 provided in the reflection plate 213a of the lighting fixture 200a from the inside of the reflection plate 213 toward the reflection surface (outside) to the reflection plate 213a. Installed. Then, by inserting the other end of the plastic optical fiber f1 into the second side holder hole of the “second optical fiber holder 420”, the other end surface of the plastic optical fiber f1 is attached to the lighting fixture 200a. Exposed on the outer surface of the (reflector). In this state, the light emission of the LED 1 can be visually recognized from the end surface (reflecting plate side) of the plastic optical fiber f1 from the outside of the lighting fixture 200a. Even if a plastic optical fiber as an insulator is freely arranged in the lighting apparatus 200a, there is no problem in safety. The end of the optical fiber on the lighting fixture side (reflecting plate side) (the end on the light output side) is not limited to being exposed to the external space from the reflecting plate 213a, but from any surface of the lighting fixture 200a to the external space. It may be exposed.

  The display content of the lighting state display device 110 is not limited to the output state of the discharge lamp 42, and may be the presence / absence of the lamp, the end of life state, or the unsatisfactory state of the lamp as described above. Moreover, although the number of LEDs and plastic optical fibers has been described as an example of four, any number of display points (number of LEDs and plastic optical fibers) may be used. In addition to turning on and off the LED display, it is also effective to display blinking. When the discharge lamp lighting device 100 has a continuous light control function, it is also effective to change the brightness of the LED in correlation with the brightness of the lamp. Further, the length of the plastic optical fiber protruding from the lighting fixture 200 to the outside of the fixture is arbitrary, but it is better that the projection amount from the fixture is small as the indication of the fixture outer surface.

  In the above embodiment, “state” is detected for a discharge lamp as an example of a light source. However, the light source that is the detection target of the “state” is not limited to the discharge lamp, and any light source may be used. For example, the light source may be a light source such as a light emitting diode, an incandescent lamp, a unit composed of a plurality of light emitting diodes, or a unit composed of different types of lamps.

The figure explaining the inconvenience at the time of using LED. FIG. 3 shows a lighting system 1000 according to Embodiment 1; FIG. 3 shows an appearance of the lighting apparatus 100a according to the first embodiment. FIG. 2 is a circuit diagram of the discharge lamp lighting device 100 and the lighting state display device 110 according to the first embodiment. The figure explaining the output setting by the discharge lamp lighting device 100 of Embodiment 1. FIG. The figure which shows the mounting state to the discharge lamp lighting device 100 of the lighting state display apparatus 110 of Embodiment 1. FIG. The figure which shows A arrow view of FIG. BB cross section of FIG. The figure which shows the detail of the attachment state of the plastic optical fiber f1 of Embodiment 1. FIG.

Explanation of symbols

  1 AC power supply, 2 power switch, 3 wiring, 10 rectifier circuit, 20 active filter circuit, 21 choke coil, 22 diode, 23 capacitor, 24 switching element, 30 inverter circuit, 31, 32 switching element, 33 resistance, 40 load circuit 41 Inductor 42 Discharge lamp 43 Capacitor 44 Resistor 45 Capacitor 50 Control power circuit 60 Power synchronization circuit 70 Drive circuit 80 Microcomputer 81 Non-volatile memory 90 Lamp detection circuit 95 End of lamp life Point detection circuit, 100 discharge lamp lighting device, 110 lighting state display device, 200a, 200b, 200c, 200d lighting fixture, 201a lamp socket, 211a discharge lamp lighting device printed circuit board, 212a discharge lamp lighting device case cover 213a reflector, 214a discharge lamp lighting apparatus casing body, 250 connection terminal, 410 a first optical fiber holder, 420 the second optical fiber holder, 1000 lighting system.

Claims (13)

A light emitting element that emits light;
A light emission control unit for detecting a state of a light source and causing the light emitting element to emit light based on the detected state;
A light source state detection apparatus comprising: a light guide unit that inputs light emitted from the light emitting element, guides and outputs the input light. The light emission control unit
The output state of the light source that is dimmed and controlled to a plurality of output states is detected as the state of the light source, and when the output state is detected, the light emitting element emits light based on the output state The light source state detection apparatus according to claim 1, wherein: The light emission control unit
A mounting state indicating whether the light source is mounted or not is detected as the light source state, and when the mounting state is detected, the light emitting element emits light based on the mounting state. The light source state detection device according to claim 1, wherein: The light emission control unit
A life state indicating whether or not the light source is in a predefined end-of-life state is detected as the state of the light source, and when the life state is detected, the light emitting element is caused to emit light based on the life state. The light source state detection apparatus in any one of Claims 1-3. The light emission control unit
A lighting state indicating whether the light source to be lit is in a lighting state or a non-lighting state is detected as the state of the light source, and when the lighting state is detected, based on the lighting state The light source state detection apparatus according to claim 1, wherein the light emitting element emits light. The light emitting element is
It is a light emitting diode, The light source state detection apparatus in any one of Claims 1-5 characterized by the above-mentioned. The light source is
Lighted by a light source lighting device mounted on the board,
The light emitting diode is
The light source state detection device according to claim 6, wherein the light source state detection device is mounted on the substrate on which the light source lighting device is mounted. The light emitting diode is
Packaging a light-emitting body that emits light, and a resin portion that transmits light emitted from the light-emitting body;
The light guide is
It is a linear body that has one end that inputs the emitted light that is disposed to face the resin portion and transmits the resin portion, and the other end that outputs the emitted light input from the one end. 8. The light source state detection device according to claim 7, The substrate on which the light emitting diode and the light source lighting device are mounted is,
Covered with a light source lighting device cover having a hole located above the resin portion of the light emitting diode when assembled to the substrate,
The light source state detection device further includes:
The cover side guide part which guides the one end of the light guide part to the resin part of the light emitting diode by being installed in the hole of the light source lighting device cover. Light source state detection device. The cover side guide part is
The light source state detection device according to claim 9, wherein a vicinity of the one end of the guided light guide is held. The light source state detection device includes:
It is a reflecting plate that covers the light source lighting device cover, and is attached to a lighting fixture including a reflecting plate that has a hole that penetrates the other end of the light guide unit,
The light source state detection device further includes:
A reflector-side guide part is provided that guides the other end of the light guide part from the space where the light source lighting device cover exists to the external space on the opposite side by being mounted in the hole of the reflector. The light source state detection device according to claim 9, wherein   The light source state detection device according to claim 1, wherein the light guide unit is an optical fiber. A lighting fixture body;
A light source lighting device attached to the lighting fixture body and capable of dimming control of the light source;
A lighting apparatus comprising: the light source state detection device according to any one of 1 to 12 that detects a state of the light source.

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