JP2011108597A - Lighting device and lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device and a lighting system capable of controlling colors by utilizing an alternating-current voltage the phase of which is controlled by a light controller. <P>SOLUTION: During a time period where an alternating-current voltage the phase of which is controlled is zero, a phototransistor of a photocoupler 334 is turned off and a voltage is inputted to a control circuit 35. When the alternating-current voltage is not zero, an electric current flows through the photodiode of the photocoupler 334 via a resistor 331, and therefore, the phototransistor of the photocoupler 334 is turned on and no voltage is inputted to the control circuit 35. The control circuit 35 controls the lighting of LED modules 42, 43 at different timing according to a conduction angle θ of the alternating-current voltage the phase of which is controlled. For example, it is possible to light the LED module 42 in accordance with a time period in which the alternating-current voltage the phase of which is controlled exists and to light the LED module 43 in accordance with the time period in which the alternating-current voltage the phase of which is controlled does not exist (zero). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lighting device having a light source such as a light emitting diode, and more particularly to a lighting device using a phase-controlled AC voltage and a lighting system including the lighting device.

  In recent years, lighting devices using light emitting diodes (LEDs) as light sources have been developed for various applications, and replacement of lighting devices using conventional light sources such as incandescent bulbs and fluorescent lamps is being performed. 2. Description of the Related Art Conventionally, an illuminating device capable of dimming an incandescent bulb by applying an AC voltage phase-controlled by a dimmer or the like to the illuminating device using the incandescent bulb has been put into practical use.

  Further, there is disclosed a light control device capable of dimming according to a phase-controlled AC voltage by inserting a power switching element for phase control of a load such as a light emitting diode or a lamp in series with the load. (See Patent Document 1).

JP 2009-158173 A

  However, in the dimming device of Patent Document 1, although the light emitting diode can be dimmed, the emission color cannot be changed. Moreover, although the illuminating device which can be dimmed by a user operating a dimmer etc. according to a time zone, the use condition of a room, etc. was put in practical use, a luminescent color is changed using a dimmer. There is no lighting device that can be used, and there has been a demand for a lighting device that can adjust the color according to the user's preference.

  This invention is made | formed in view of such a situation, and provides an illuminating device which can be color-tuned using the alternating voltage phase-controlled with the light control device, and an illuminating system provided with this illuminating device. Objective.

  An illuminating device according to the present invention includes a plurality of light sources having different chromaticities, and a control unit that performs lighting control at different timings for the light sources having different chromaticities according to conduction angles of phase-controlled AC voltages. It is characterized by.

  In the present invention, the control unit performs lighting control at different timing for each light source having a different chromaticity according to the conduction angle of the AC voltage subjected to phase control. For example, light sources having different chromaticities are LEDs of day white, light bulb color, white, daylight color, and the like. For example, when using a daylight white LED and a light bulb color LED, the daylight white LED is turned on in correspondence with the time when the phase-controlled AC voltage exists, and the phase-controlled AC voltage does not exist (zero) time. LED of light bulb color can be turned on in response to the above. Thus, by operating the dimmer, the lighting timing of the LEDs with different chromaticities can be changed according to the conduction angle of the phase-controlled AC voltage output from the dimmer, and according to the user's preference Can be toned. In addition, the kind of light source (for example, LED) from which chromaticity differs is not limited to two.

  The illumination device according to the present invention includes a signal generation unit that generates each control signal whose time length is extended or shortened according to the conduction angle, and the control unit is based on each control signal generated by the signal generation unit. Thus, lighting control is performed for each light source having a different chromaticity.

  In the present invention, the signal generation unit generates each control signal whose time length is extended or shortened according to the conduction angle. A control part performs lighting control for every light source (for example, LED) from which chromaticity differs based on each control signal produced | generated by the signal generation part. For example, as the conduction angle increases, the lighting time of the daylight white LED is shortened by the control signal that shortens the time length, and the lighting time of the light bulb color LED is lengthened by the control signal that extends the time length. Can do. Thereby, by operating the dimmer, the lighting time of the LEDs with different chromaticities can be changed according to the conduction angle of the phase-controlled AC voltage output from the dimmer, and according to the user's preference Can be toned. In addition, the kind of light source (for example, LED) from which chromaticity differs is not limited to two.

  In the lighting device according to the present invention, the signal generation unit controls the lighting at a timing different from the first signal generation unit that generates a first control signal having a time length corresponding to a conduction angle, and the first control signal. A second signal generator for generating a second control signal for controlling the lighting of the light source of one chromaticity based on the first control signal, and the second signal generator A light source having a chromaticity different from the one chromaticity is controlled to be turned on based on a control signal.

  In the present invention, the first signal generation unit generates a first control signal having a time length corresponding to the conduction angle, and the second signal generation unit lights up at a timing different from that of the first control signal. A second control signal for controlling is generated. The control unit controls lighting of a light source (for example, LED) of one chromaticity based on a first control signal, and a light source (for example, light source) having a chromaticity different from the one chromaticity based on a second control signal. LED) is turned on. Thereby, the light from an illuminating device can be dimmed.

  The lighting device according to the present invention is characterized in that the second control signal complements the first control signal in time length.

  In the present invention, the second control signal is complementary in time length to the first control signal. For example, the second control signal is an inverted control signal obtained by inverting the first control signal. Thereby, for example, while one light source (for example, LED) is turned on over a half cycle of the AC voltage, the other light source (for example, LED) is turned off, and the lighting time of LEDs having different chromaticities is turned on. Can be changed according to the conduction angle, and the light can be adjusted while keeping the brightness uniform.

  A lighting device according to the present invention includes a storage unit that stores a plurality of time parameters corresponding to a conduction angle, a signal generation unit that generates a plurality of control signals according to the time parameters, and a detection that detects a conduction angle. The signal generation unit generates a plurality of control signals corresponding to each time parameter corresponding to the conduction angle detected by the detection unit, and the control unit generates the signal by the signal generation unit On the basis of each control signal, lighting control is performed for each light source having a different chromaticity.

  In the present invention, a plurality of time parameters are stored in the storage unit in correspondence with the conduction angle. The signal generation unit generates a plurality of control signals corresponding to each time parameter corresponding to the detected conduction angle. For example, when the conduction angle is 141 to 150 degrees, the time parameters of two light sources (for example, LEDs) having different chromaticities are 7 msec and 3 msec, respectively. The control unit performs lighting control for each LED having different chromaticity based on each control signal generated by the signal generation unit. Thereby, by operating the dimmer, the lighting time of the LEDs with different chromaticities can be changed according to the conduction angle of the phase-controlled AC voltage output from the dimmer, and according to the user's preference Can be toned. Note that the types of LEDs having different chromaticities are not limited to two.

  An illumination system according to the present invention includes the illumination device according to any one of the above-described inventions, and an operation unit that receives an operation for setting a conduction angle, and phase-controls the input AC voltage with the set conduction angle. And a phase controller that converts the AC voltage into an output voltage, and adjusts the color according to the set conduction angle.

  In the present invention, a phase controller (for example, a dimmer) has an operation unit that receives an operation for setting a conduction angle, and an alternating current that is phase-controlled with an input AC voltage at a set conduction angle. Convert to voltage and output. The lighting device adjusts the color according to the set conduction angle. Thus, by operating the dimmer, the lighting timing of the LEDs with different chromaticities can be changed according to the conduction angle of the phase-controlled AC voltage output from the dimmer, and according to the user's preference Can be toned.

  According to the present invention, by operating the dimmer, the lighting timing of the LEDs having different chromaticities can be changed according to the conduction angle of the phase-controlled AC voltage output from the dimmer. Color can be adjusted according to preference.

It is a schematic diagram which shows an example of a structure of the illumination system of this Embodiment. It is an external view of the illuminating device of this Embodiment. It is a principal part disassembled perspective view of the illuminating device of this Embodiment. It is sectional drawing of the illuminating device of this Embodiment. It is a top view which shows the structural example of the light emission surface of the light source module of this Embodiment. It is a block diagram which shows the structure of the power supply part of this Embodiment. It is a time chart which shows an example of toning of the illuminating device of this Embodiment. It is a time chart which shows an example of toning of the illuminating device of this Embodiment. It is a time chart which shows an example of the lighting timing of an LED module. It is a time chart which shows the other example of the lighting timing of a LED module. 10 is an explanatory diagram illustrating an example of a time parameter according to Embodiment 2. FIG. FIG. 10 is a block diagram illustrating a configuration of a main part of a power supply unit according to a third embodiment. 12 is an explanatory diagram illustrating an example of a time parameter according to Embodiment 3. FIG.

Embodiment 1
Hereinafter, the present invention will be described with reference to the drawings illustrating embodiments thereof. FIG. 1 is a schematic diagram showing an example of the configuration of the illumination system of the present embodiment. The lighting system of the present embodiment includes one or a plurality of lighting devices 100, a dimmer 200, and the like. As shown in FIG. 1, a commercial power source is provided with a dimmer 200, and a plurality of lighting devices 100 are connected to a power line on the output side of the dimmer 200. As will be described later, the lighting device 100 can be replaced with an existing light bulb by replacing the existing light bulb with a bulb shape incorporating LED modules having different chromaticities.

  The dimmer 200 includes a triac or a thyristor. By turning a dimming knob (operation unit) of the dimmer 200, the dimmer 200 has a conduction angle θ set with the input AC voltage. The output is converted to an AC voltage that is phase-controlled by. The illuminating device 100 can change (tune) the emission color according to the conduction angle θ of the AC voltage subjected to phase control.

  FIG. 2 is an external view of the illumination device 100 according to the present embodiment, FIG. 3 is an exploded perspective view of a main part of the illumination device 100 according to the present embodiment, and FIG. 4 is a cross-sectional view of the illumination device 100 according to the present embodiment. FIG. As shown in FIG. 2, the lighting device 100 is an LED bulb having a bulb type such as 40 W, 60 W, and the like, as a power supply connection portion that fits into an external socket and is electrically connected to a commercial power source in appearance. The base 10, the heat radiating part 13, the connecting body 11 for connecting the base 10 and the heat radiating part 13, the light transmitting part 50 having a hollow substantially hemispherical shell, and the LED module to be described later are placed, and the heat radiating part 13 is thermally connected. And a disk-shaped heat sink 20 connected to the.

  As shown in FIGS. 3 and 4, the light source module 40 in which the LED modules 42 and 43 are mounted on the surface of the substrate 41 is attached to the heat radiating plate 20 with screws 21. Between the light source module 40 and the heat radiating plate 20, heat generated in the light source module 40 is radiated from the heat radiating plate 20 and the heat radiating unit by applying a heat conductive sheet or a highly heat conductive resin in order to improve the heat conduction efficiency. The heat can be radiated to the outside through 13.

  The heat radiating portion 13 is made of, for example, a light metal having high thermal conductivity such as aluminum and has a substantially cylindrical shape. The heat dissipating part 13 has a plurality of heat dissipating grooves on the outer peripheral surface of the cylinder, and heat transmitted from the light source module 40 to the heat dissipating part 13 is dissipated from the outer peripheral surface to the outside air using the heat dissipating grooves. The In addition, a waterproof packing 19 made of synthetic rubber is provided between the heat radiating portion 13 and the heat radiating plate 20 so that moisture does not enter the inside.

  The heat radiating part 13 has a cavity formed therein, and supplies the required power (voltage, current) to the LED modules 42 and 43 of the light source module 40 via the wiring 22 inside the heat radiating part 13. A power supply unit 30, a storage unit 15 for storing the power supply unit 30, and the like are disposed. Further, a power line 17 for supplying commercial power to the power supply unit 30 is provided between the power supply unit 30 and the base 10.

  A waterproof ring 12 made of synthetic rubber is provided between the heat radiating portion 13 and the connecting body 11 so that moisture does not enter the inside. The heat radiating portion 13 and the connecting body 11 are fixed by screws 14. Yes.

  Further, as shown in FIG. 4, in order to efficiently conduct heat generated in the power supply unit 30 to the heat dissipation unit 13 and the base 10 around the power supply unit 30 accommodated in the accommodation unit 15, high conductivity is provided. Of synthetic resin 25 (for example, polyurethane resin). The synthetic resin 25 preferably has high electrical insulation, low water permeability, and flame retardancy.

  The synthetic resin 25 is filled in the heat radiating portion 13 in a state where the electrical wiring inside the heat radiating portion 13 is finished and the heat radiating portion 13 and the base 10 are mechanically joined. The synthetic resin 25 is in a liquid state when filled. After filling with the synthetic resin 25, it is cured at a required temperature. The cured synthetic resin 25 adheres to the inner surface of the base 10 and also to the inner surface of the heat radiating portion 13. Thereby, it is possible to more reliably prevent moisture from entering from the joint portion of the base 10.

  In addition, since the synthetic resin 25 has high electrical insulation, it is possible to reliably prevent the heat dissipation part 13 and the charging part of the power supply part 30 from being dielectrically broken and short-circuited. Further, since the synthetic resin 30 has a high thermal conductivity, the heat generated in the power supply unit 30 is radiated not only from the heat radiating unit 13 but also from the base 10 thermally connected through the synthetic resin 25. Thus, the temperature rise of the power supply unit 30 can be suppressed, and the reliability of the electrical components used in the power supply unit 30 can be improved.

  On the light emitting surface side of the light source module 40, a reflection plate 23 is attached with screws 21. The reflector 23 is provided with an insertion hole having substantially the same size as the LED module 42, 43 at a position corresponding to the position where the LED module 42, 43 is disposed, and the LED module 42, 43 is provided in the insertion hole. It is designed to be installed in a state where it is inserted. The reflecting plate 23 is not essential and can be omitted.

  The translucent part 50 is made of milky white glass and is fixed to the heat sink 20 with an adhesive. In addition, the translucent part 50 is not limited to glass, Milky white polycarbonate resin etc. can also be used. In addition, when the translucent part 50 is a product made from polycarbonate resin, it can be screwed and locked to the heat sink 20 by cutting a screw.

A light diffusing member 50 a for diffusing light from the LED modules 42 and 43 (light source module 40) is added to the light transmitting part 50. The light diffusing member 50a has, for example, a crystal structure, and its optical properties may be, for example, those having a large refractive index, a small light absorption ability, and a high light scattering ability. For example, a pigment having a crystal structure such as a phosphor can be added. Further, the addition ratio of the light diffusing member 50a may be about several percent, for example. For example, 3Ca ₃ (PO ₄ ) ₂ Ca (F, Cl) ₂ SbMn can be used as the phosphor.

  Accordingly, when the LED modules 42 and 43 having the property of a point light source are used as the light source, even when the directivity of the light of the LED modules 42 and 43 is narrow, the light emitted from the LED modules 42 and 43 is translucent. Since light is diffused by the light diffusing member 50a when passing through the portion 50, the light distribution characteristic can be widened with a simple configuration. When the light diffusing member 50a is a phosphor, a material that diffuses light and is excited by the light to emit light may be used. The light diffusing member 50a itself also emits light, so that the light distribution can be further expanded.

  Moreover, since the translucent part 50 makes a hollow substantially hemispherical shell, it is possible to provide a light bulb-type lighting device having a wide light distribution characteristic using the LED modules 42 and 43 (light emitting diodes).

  In particular, since the light-transmitting part 50 and the heat sink 20 are joined at a position slightly reduced in diameter from the maximum diameter of the light-transmitting part 50 having a substantially hemispherical shell, the light emitted from the LED modules 42 and 43 is Of the surface of the light transmitting part 50, the light is radiated along the direction from the heat radiating part 13 toward the base 10 by being transmitted from the part from the joint portion between the light transmitting part 50 and the heat radiating plate 20 to the maximum diameter. Therefore, the light distribution characteristic can be further widened.

  FIG. 5 is a plan view showing a structural example of the light emitting surface of the light source module 40 of the present embodiment. In the light source module 40, LED modules 42 and 43 serving as light sources having different chromaticities are alternately arranged in an annular shape on a substantially circular substrate 41 made of an aluminum alloy or the like. The LED module 42 can emit daylight white light, and the LED module 43 can emit light bulb color light. Further, the LED modules having different chromaticities are not limited to daylight white and light bulb color, and may be white, daylight, etc., or LED modules of red, green, blue, etc. may be provided. In addition, when daylight white (approximately 5000K) and light bulb color (approximately 2800K) are used as LED modules having different chromaticities, a straight line connecting the daylight white and the light bulb color can be approximated to a black body locus in the xy chromaticity diagram. Therefore, it is possible to perform color matching along the chromaticity on the black body locus more accurately, and it is particularly preferable as a residential lighting device.

  In the example of FIG. 5, three LED modules 42 and 43 are used, but the number and arrangement of the LED modules 42 and 43 are not limited to the example of FIG. Depending on the case, it is possible to appropriately change the number or make the arrangement substantially rectangular. The substrate 41 may be ceramic.

  FIG. 6 is a block diagram showing a configuration of the power supply unit 30 of the present embodiment. The power supply unit 30 includes a noise filter circuit 31 for removing noise entering from a commercial power source, a rectifier circuit 32 that rectifies and converts a phase-controlled AC voltage into a DC voltage, and a phase-controlled AC voltage A conduction angle detection circuit 33 that detects the conduction angle θ, a DC / DC converter 34 that converts the DC voltage output from the rectification circuit 32 into a required DC voltage, and an LED module according to the conduction angle θ of the phase-controlled AC voltage Smoothing smoothes the voltage rectified by the control circuit 35 as a control unit that controls lighting at different timings for each of the 42 and 43, the transistors 36 and 37 for turning on and off the current flowing through the LED modules 42 and 43, and the rectifier circuit 32. Capacitor 341 and smoothing capacitor 342 for removing ripples included in the output of DC / DC converter 34 are provided. Yeah.

  The conduction angle detection circuit 33 includes a resistor 331, a capacitor 332, a diode 333, a photocoupler 334, a resistor 335, and the like. A series circuit of a resistor 331 and a capacitor 332 is connected to the positive side of the output of the rectifier circuit 32, and a photodiode of a photocoupler 334 is connected to both ends of the capacitor 332. The anode of the diode 333 is connected to the positive side of the output of the rectifier circuit 32, and the cathode of the diode 333 is connected to the input terminal of the DC / DC converter 34. One end of a resistor 335 is connected to the output end of the DC / DC converter 34, and the phototransistor collector of the photocoupler 334 is connected to the other end of the resistor 335. The collector of the phototransistor of the photocoupler 334 is connected to the control circuit 35. The configuration of the conduction angle detection circuit 33 is an example, and is not limited to the example of FIG. The transistors 36, 37, and 334 may be FETs.

  When the input voltage is phase-controlled, the input voltage during the period when the triac or thyristor of the dimmer 200 is off is zero, so that the phototransistor of the photocoupler 334 is turned off, and the voltage is supplied to the control circuit 35. Entered.

  On the other hand, during the period in which the triac or thyristor of the dimmer 200 is on, an input voltage is applied and a current flows through the photodiode of the photocoupler 334 via the resistor 331, so that the phototransistor of the photocoupler 334 is turned on. . As a result, no voltage is input to the control circuit 35.

  The control circuit 35 can detect the presence / absence of an AC voltage according to the presence / absence of the input voltage, and can specify the conduction angle θ. The control circuit 35 may be provided with a zero cross circuit. The zero cross circuit can detect the timing when the AC voltage becomes zero, and can be used as a reference when generating the control signal.

  The control circuit 35 controls the lighting of the LED modules 42 and 43 at different timings according to the conduction angle θ of the AC voltage subjected to phase control. For example, the LED module 42 can be lit corresponding to the time when the phase-controlled AC voltage exists, and the LED module 43 can be lit corresponding to the time when the phase-controlled AC voltage does not exist (zero). Thereby, by operating the dimmer 200, it is possible to change the lighting timing of the LEDs having different chromaticities according to the conduction angle θ of the phase-controlled AC voltage output from the dimmer 200. Color can be adjusted according to preference. Note that the types of LEDs having different chromaticities are not limited to two.

  In addition, the control circuit 35 has a function as a signal generation unit that generates a control signal S1 having a longer time length and a control signal S2 having a shorter time length according to the conduction angle θ. The generation of the control signals S1 and S2 can be realized by providing a timing circuit, for example. The transistor 36 is turned on by the control signal S1, and the transistor 37 is turned on by the control signal S2. Thereby, as the conduction angle θ increases, the lighting time of the LED module 42 can be shortened and the lighting time of the LED module 43 can be lengthened. As a result, by operating the dimmer, the lighting time of the LEDs with different chromaticities can be changed according to the conduction angle θ of the phase-controlled AC voltage output from the dimmer. Toning can be done accordingly. Note that the types of LEDs having different chromaticities are not limited to two.

  In addition, the control circuit 35 generates a first signal generation unit that generates a first control signal having a time length corresponding to the conduction angle, and a second control signal that complements the time length with the first control signal. It has a function as a second signal generation unit. The control circuit 35 controls the lighting of the LED module 42 which is a light source of one chromaticity based on the control signal S1 as the first control signal, and the LED module 43 based on the control signal S2 as the second control signal. Control the lighting. Thereby, the light from an illuminating device can be dimmed.

  The control circuit 35 includes a first signal generation unit that generates a first control signal having a time length corresponding to the conduction angle, and a second control signal for controlling lighting at a timing different from the first control signal. As a second signal generator. For example, the second control signal is an inverted control signal obtained by inverting the first control signal. The control circuit 35 generates a control signal S1 having a time length corresponding to the conduction angle θ and an inverted control signal S2 obtained by inverting the control signal S1. The control circuit 35 controls the lighting of the LED module 42 based on the control signal S1, and controls the lighting of the LED module 43 based on the inverted control signal S2. Thereby, for example, while one LED is lit over the half cycle of the AC voltage, the other LED is turned off, and the lighting time of the LED having different chromaticity is changed according to the conduction angle θ. And can be dimmed while maintaining uniform brightness.

  7 and 8 are time charts showing an example of toning of the lighting apparatus 100 according to the present embodiment. The difference between FIG. 7 and FIG. 8 is that the conduction angle θ of the phase-controlled AC voltage is smaller in the example of FIG. 8 than in the example of FIG. As shown in FIG. 7, a control signal S1 having a time length corresponding to the conduction angle θ is generated at the time of rising of the phase-controlled AC voltage. Further, a control signal S2 obtained by inverting the control signal S1 is generated. That is, the time for generating the control signal S1 and the time for generating the inverted control signal S2 are defined over a half cycle of the AC voltage. Also, as shown in FIG. 7, when the conduction angle θ is relatively large, the time length of the control signal S1 is longer than the time length of the control signal S2, so that the lighting time of the LED module 42 is lighted. Longer than time.

  On the other hand, as shown in FIG. 8, when the conduction angle θ is smaller than in the case of FIG. 7, the time length of the control signal S1 is shortened and the time length of the control signal S2 is lengthened. Accordingly, when the conduction angle θ is reduced, the lighting time of the LED module 42 is shortened, and the lighting time of the LED module 43 is lengthened. Thereby, a desired luminescent color can be obtained by operating the dimmer 200 and adjusting the conduction angle θ.

  In the examples of FIGS. 7 and 8, the control signal S1 exists until the waveform of the AC voltage subjected to phase control gradually decreases to zero, but the capacitor is connected with the voltage obtained by rectifying the AC voltage. By charging, the control signal S1 can be generated using the voltage charged in the capacitor even when the AC voltage becomes near zero.

  FIG. 9 is a time chart showing an example of the lighting timing of the LED modules 42 and 43. In the example of FIGS. 7 and 8 described above, the LED module 43 is turned off while the LED module 42 is lit, and the LED module 42 is lit while the LED module 43 is lit, over the half cycle of the AC voltage. The lighting timing is set so as to turn off the light, but the present invention is not limited to this. As shown in FIG. 9, there may be a time when neither of the LED modules 42 and 43 is lit. That is, the control signal S1 and the control signal S2 are generated to control the lighting of the LED modules 42 and 43 at different timings. In this case, there is a time when the control signal S1 and the control signal S2 become zero each other. In addition, when the time when neither of the LED modules 42 and 43 is lit is short, the flickering of the brightness is negligible.

  FIG. 10 is a time chart showing another example of the lighting timing of the LED modules 42 and 43. As shown in FIG. 10, there may be a time during which both LED modules 42 and 43 are lit. That is, the control signal S1 and the control signal S2 are generated to control the lighting of the LED modules 42 and 43 at different timings. In this case, there is a time when the control signal S1 and the control signal S2 overlap each other. In addition, when the LED modules 42 and 43 are lit for a short time, the brightness flickering is negligible.

Embodiment 2
For the generation of the control signals S1 and S2, a storage unit such as a memory may be provided in the control circuit 35 in place of the configuration including the timing circuit, and a plurality of time parameters may be stored corresponding to the conduction angle. . In the second embodiment, a memory storing a plurality of time parameters is used.

  FIG. 11 is an explanatory diagram illustrating an example of a time parameter according to the second embodiment. As shown in FIG. 11, the time parameter of the control signal S1 and the time parameter of the control signal S2 are stored in correspondence with the conduction angle θ. For example, when the conduction angle θ is 171 to 180 degrees, the time parameter of the control signal S1 is 10 msec, and the time parameter of the control signal S2 is 0 msec. In this case, only the LED module 42 lights continuously. The sum of the time length of the control signal S1 and the time length of the control signal S2 is 10 msec.

  For example, when the conduction angle θ is 141 to 150 degrees, the time parameter of the control signal S1 is 7 msec and the time parameter of the control signal S2 is 3 msec. The control circuit 35 performs lighting control for each of the LED modules 42 and 43 based on the generated control signals S1 and S2. Thereby, by operating the dimmer 200, the lighting time of the LEDs having different chromaticities can be changed according to the conduction angle θ of the phase-controlled AC voltage output from the dimmer 200. Color can be adjusted according to preference.

Embodiment 3
In Embodiment 1 described above, the two types of LED modules 42 and 43 are used. However, the present invention is not limited to this, and there may be three or more LED modules having different chromaticities. In the third embodiment, there are three or more LED modules having different chromaticities.

  FIG. 12 is a block diagram showing a main configuration of the power supply unit 30 according to the third embodiment. A difference from the example shown in FIG. 6 is that the LED module 44 and the transistor 38 for turning on and off the current flowing in the LED module 44 are provided, and the control circuit 35 includes control signals S1 and S2. In addition, a control signal S3 is generated and output. The LED module 44 may be daylight color, white, or another color.

  FIG. 13 is an explanatory diagram illustrating an example of a time parameter according to the third embodiment. As shown in FIG. 13, the time parameter of the control signal S1, the time parameter of the control signal S2, and the time parameter of the control signal S3 are stored in correspondence with the conduction angle θ. For example, when the conduction angle θ is 171 to 180 degrees, the time parameter of the control signal S1 is 10 msec, and the time parameters of the control signals S2 and S3 are 0 msec. In this case, only the LED module 42 lights continuously. The total time length of the control signals S1, S2, and S3 is 10 msec.

  For example, when the conduction angle θ is 131 to 140 degrees, the time parameter of the control signal S1 is 6 msec, and the time parameters of the control signals S2 and S3 are 4 msec. The control circuit 35 performs lighting control for each of the LED modules 42, 43, and 44 based on the generated control signals S1, S2, and S3. Thereby, by operating the dimmer 200, the lighting time of the LEDs having different chromaticities can be changed according to the conduction angle θ of the phase-controlled AC voltage output from the dimmer 200. Color can be adjusted according to preference.

  Note that the control circuit 35 may be configured to include a timing circuit instead of the configuration storing the time parameter.

Embodiment 4
In the above-described Embodiments 2 and 3, the time parameters of the control signals S1 and S2 are defined in correspondence with the conduction angle θ, but the present invention is not limited to this. For example, an ON time (duty ratio) in PWM control can be defined as a time parameter.

  In addition, when the conduction angle is 70 degrees or less, for example, when the conduction angle is 70 degrees or less, a sufficient power supply voltage may not be ensured for the LED module at a predetermined conduction angle (for example, 70 degrees) or less. The time parameter may be set to 0 msec, and the LED module may be turned off without supplying current.

  In addition, it is not necessary to use the entire range (0 degree to 180 degree) of the conduction angle, and a certain range (for example, 70 degree to 180 degree) is used. Toning control can be performed linearly in the range of white and light bulb color.

  In the above-described embodiment, the light bulb type lighting device has been described. However, the shape of the lighting device is not limited to the light bulb type, and may be another shape. Moreover, although the illuminating device provided with the LED module as the light source has been described, the light source is not limited to the LED module, and may be another light source such as an organic EL.

30 power supply unit 33 conduction angle detection circuit (detection unit)
34 DC / DC converter 35 Control circuit (control unit, signal generation unit, storage unit)
36, 37, 38 Transistor 42, 43, 44 LED module (light source)
100 lighting device 200 dimmer

Claims (6)

Multiple light sources with different chromaticities;
And a controller that controls lighting at different timings for each light source having a different chromaticity according to a conduction angle of a phase-controlled AC voltage. A signal generation unit that generates each control signal whose time length is extended and shortened according to the conduction angle,
The controller is
The lighting device according to claim 1, wherein lighting control is performed for each light source having a different chromaticity based on each control signal generated by the signal generation unit. The signal generator is
A first signal generation unit that generates a first control signal having a time length according to the conduction angle;
A second signal generation unit that generates a second control signal for controlling lighting at a timing different from that of the first control signal,
The controller is
The lighting control of the light source of one chromaticity is controlled based on the first control signal, and the lighting control of the light source having a chromaticity different from the first chromaticity is controlled based on the second control signal. The lighting device according to claim 2, wherein   The lighting device according to claim 3, wherein the second control signal complements the first control signal in time length. A storage unit for storing a plurality of time parameters corresponding to the conduction angle;
A signal generator that generates a plurality of control signals according to each of the time parameters;
And a detector for detecting the conduction angle,
The signal generator is
A plurality of control signals corresponding to each time parameter corresponding to the conduction angle detected by the detection unit;
The controller is
The lighting device according to claim 1, wherein lighting control is performed for each light source having a different chromaticity based on each control signal generated by the signal generation unit. The lighting device according to any one of claims 1 to 5,
A control unit for receiving an operation for setting a conduction angle, and a phase controller for converting the input AC voltage into an AC voltage phase-controlled at the set conduction angle and outputting the AC voltage;
A lighting system characterized in that the color is adjusted according to a set conduction angle.

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