JP2006100129A - Illumination device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination device for which an LED can be used as an auxiliary light source without complicating a circuit constitution in the illumination device light-controlled by an external transmitter. <P>SOLUTION: According to the present embodiment, because the LED 20 is connected to the output of a microcomputer power source forming part 8 connected between outputs of a commercial power source e, and connected to an output part of the microcomputer 6 always driven for receiving a signal from the external transmitter, lighting control of the LED 20 can be carried out easily and surely even if it is simple and inexpensive. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a lighting device that is controlled to be turned on by an external transmitter such as a remote control device.

  2. Description of the Related Art Conventionally, for example, an illumination device that controls the lighting of a light source by a remote control device using a microcomputer changes the lighting state of a main light source such as a fluorescent lamp to all light and dimming, or an auxiliary light source composed of a so-called night light. The user can select various lighting states by changing the lighting state.

  As a lighting circuit method for the auxiliary light source of such an illuminating device, there is known a lighting circuit in which a microcomputer is used for lighting control, in which a rectifying element or an AC switch is used on a power line from a commercial power source. (For example, see Patent Document 1).

In recent years, lighting devices using LEDs as a second light source in addition to the main light source have been developed. And as the lighting circuit method, in a lighting device comprising a DC power source obtained by rectifying and smoothing an AC power source and an inverter circuit that receives this DC power source and oscillates at a high frequency by turning on and off the switching element, at least a DC power source for LED lighting is used. A configuration is known in which it is formed so as to be supplied via the DC power supply (see, for example, Patent Document 2).
JP-A-9-97697 JP 2003-264090 A

  However, the prior art described in Patent Document 1 is provided with an AC switch such as a rectifying element or a triac for rectifying an AC power source that is a commercial power source. Furthermore, an ON / OFF switch for controlling the lighting of the light bulb, which is a night light, by the output signal of the microcomputer is also necessary. Therefore, the number of parts increases and the circuit configuration becomes expensive.

  In addition, since the conventional technique described in Patent Document 2 is formed so that a part of the inverter circuit is shared in order to generate a DC power source for LED lighting, the circuit configuration itself is complicated. Both of them may be enlarged.

  The present invention has been made in view of the above, and an object of the present invention is to provide an illuminating device that can be used as an auxiliary light source without complicating the circuit configuration in an illuminating device that is controlled to be lit by an external transmitter. .

  The lighting device according to claim 1 includes a lighting device unit that turns on the main light source; a receiving unit that receives a transmission signal from an external transmitter; a reset voltage that is 2 V or higher, and a signal received by the receiving unit A microcomputer control unit having an input microcomputer and controlling the driving of the lighting device unit by an output signal from the microcomputer; connected between the outputs of the commercial power supply to generate a microcomputer driving power source of 2 V or more, A microcomputer power generation unit that supplies power; and an LED that is connected to an output of the microcomputer power generation unit and is connected to the output unit of the microcomputer and controlled to be lit by an output signal from the microcomputer. And

  According to the present invention, when a transmission signal for turning on the main light source is transmitted from the external transmitter, the light receiving unit receives the signal, and the signal received by the receiving unit is input to the microcomputer. . The microcomputer reads the control information set in advance with the input signal, and controls the lighting device unit so that the lighting device unit is driven with the control information.

  Further, when a transmission signal for turning on the LED is transmitted from the external transmitter, the light receiving unit receives the signal, and the signal received by the receiving unit is input to the microcomputer. Then, the microcomputer reads the control information set in advance with the input signal, and transmits a signal directly to the LED so that the LED is controlled to be turned on with the control information.

  In such a control mode, when an AC voltage of, for example, 100 V is supplied from the commercial power supply to the microcomputer power generation unit, the microcomputer power generation unit generates a DC voltage of 2 V or more and supplies the power to the microcomputer. That is, since the microcomputer receives a signal from the external transmitter at the light receiving unit, the power is directly supplied from the commercial power source through the microcomputer power generation unit regardless of the lighting state of the main light source and the LED, and is driven. It is a situation. Therefore, if the LED directly connected to the microcomputer output unit can be lit with a DC power supply of 2 V or more, the microcomputer power It can be lit by power supply from the generator.

  According to the present invention, the power source for lighting the LED is taken from the output of the microcomputer power generation unit which is connected between the outputs of the commercial power source and generates the power for driving the microcomputer, and the LED is directly connected to the output unit of the microcomputer. Therefore, even if an LED is used as an auxiliary light source in addition to the main light source, an LED lighting circuit can be formed independently of the main light source lighting circuit. In addition, since there is no need to use an AC switch for turning on the auxiliary light source or an ON / OFF switch for turning on the auxiliary light source by a signal from the microcomputer, the LED lighting control is simple and inexpensive. Can be easily and reliably performed. Furthermore, since the number of parts is reduced, a circuit that can be miniaturized can be obtained.

  Further, by using an LED as an auxiliary light source, structural parts such as a base can be reduced rather than using a light bulb as an auxiliary light source, and heat generation and power consumption from the auxiliary light source can be suppressed, and the efficiency of the lighting device can be reduced. Can be improved.

  According to the first aspect of the present invention, an LED lighting circuit can be formed independently even if an LED is used as an auxiliary light source in addition to the main light source, and circuit components such as an AC switch for lighting the auxiliary light source can be used. Since the use is not used, a configuration capable of easily and reliably performing the lighting control of the LED can be realized with a simple configuration, and a circuit configuration that can be further miniaturized can be obtained.

  An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a circuit diagram of a lighting device of the lighting device, and FIG. 2 is a bottom view of the lighting fixture.

  As shown in FIG. 2, reference numeral 50 denotes an illuminating device used for home use, for example. The illuminating device 50 includes an instrument body 51 having a circular appearance, and a reflector 52 is provided on the lower surface of the instrument body 51. The reflector 52 is provided with an annular fluorescent lamp FL as a discharge lamp as a main light source, an LED 20 as an auxiliary light source, that is, a night light, and a receiving unit 7 for receiving a signal from an external transmitter. It has been. An inverter circuit 4 or the like that is a lighting device unit that lights the fluorescent lamp FL and the LED 20 is provided on the substrate 30, and the substrate 30 is provided between the instrument body 51 and the reflector 52. . The substrate 30 is electrically connected to the fluorescent lamp FL, the LED 20 and the light receiving unit 7 via wirings 53, 54 and 55, respectively. And the shade which is not illustrated is provided in the lower surface side of the instrument main body 51 so that the reflector 52, fluorescent lamp FL, LED20, and the receiving part 7 may be covered. Reference numeral 56 denotes an adapter for fixing the instrument main body 51 to the ceiling, and the commercial power source e is supplied to the substrate 30 via the adapter 56 from a hook ceiling provided on the ceiling.

  As shown in FIG. 1, in the lighting device 1, an input terminal of a diode bridge 2 as a full-wave rectifier circuit is connected to a commercial power source e, and a capacitor C <b> 1 is connected between the output terminals of the diode bridge 2.

  The capacitor C1 is connected to an inverter circuit 4 which is a half-bridge type lighting device part to a step-up chopper circuit 3 as a pre-regulator circuit for power factor improvement. The diode bridge 2, the capacitor C1, the step-up chopper circuit 3, the inverter circuit 4 and the like constitute a lighting device portion of the fluorescent lamp FL which is a main light source.

  In the step-up chopper circuit 3, a series circuit of an inductor L1 and a field effect transistor Q1 as a switching element is connected to a capacitor C1, and a series circuit of a diode D1 and a smoothing capacitor C2 is connected to the field effect transistor Q1. An inverter circuit 4 is connected to C2. In the inverter circuit 4, a series circuit of a field effect transistor Q4 and a field effect transistor Q3 is connected to a capacitor C2, and the field effect transistor Q3 is connected to a fluorescent light that is a main light source via an inductor L2 and a DC cut capacitor C3. The lamp FL is connected to one end of each of the filament FL1a and the filament FL1b. Further, a starting capacitor C4 is connected to the other end of each of the filament FL1a and the filament FL1b of the fluorescent lamp FL.

  The inverter circuit 4 is connected to an inverter drive circuit 5 for driving the field effect transistor Q2 and the field effect transistor Q3. The inverter drive circuit 5 is controlled by the microcomputer 6 and the inverter control unit 7. The microcomputer 6 is connected to a receiving unit 10 that receives an infrared remote control signal transmitted from an external transmitter (not shown).

  On the other hand, a microcomputer power generation unit that is part of an LED lighting circuit that lights up the LED 20 that is a night light between outputs of the commercial power source e, and that rectifies and smoothes the commercial power source e and supplies it to the microcomputer 6 as a DC power source. 8. A power supply monitoring unit 9 for detecting on / off of the commercial AC power source e and a wall switch 11 as an external switch for operating a plurality of lighting modes of the fluorescent lamp FL and the LED 20 are electrically connected.

  The LED 20 is connected to the output of the microcomputer power generation unit 8 and is connected in series with a resistor R1 that is a current reducing resistor. The resistor R1 is directly connected to the output port 61 of the microcomputer 6. . The LED 20 can be lit at a DC voltage of 2 V or higher.

  The microcomputer power supply generation unit 8 includes a transformer and a diode bridge (not shown) connected to the commercial AC power supply e, and a smoothing capacitor as a backup power supply, for example, and a voltage up to a predetermined value, for example, 5V that is 2V or more A dropper (not shown) as a voltage drop unit that is lowered and supplied to the microcomputer 6 is connected and formed.

  The wall switch 11 is installed on a wall or the like, and turns on and off the commercial power source e by an external operation.

  The power supply monitoring unit 9 detects on / off of the commercial power supply e by the wall switch 11 and outputs a power supply detection signal to the microcomputer 6 as an interrupt signal. That is, when the commercial power source e is turned off and on by the wall switch 11 within a predetermined waiting time, for example, within one second, a switching signal for switching the plurality of lighting modes of the fluorescent lamp FL and the LED 20 is output to the microcomputer 6 as an interrupt signal. When the commercial power source e is not turned off and on within a predetermined reset time, an interrupt signal in the extinguishing mode is output to the microcomputer 6. Then, according to the input signal, the microcomputer 6 switches the plurality of lighting modes of the fluorescent lamp FL and the LED 20 if the commercial power source e is turned on and off within a predetermined time, and can turn off the commercial power source e for a predetermined time or more. If a power failure is detected, a signal associated therewith is output to the inverter control unit.

  The receiving unit 10 receives the switching signals for turning on and off the fluorescent lamp FL and the LED 20 transmitted from the external transmitter, and outputs them to the microcomputer 6 as an interrupt signal.

  The microcomputer 6 is an interrupt signal for switching a plurality of lighting modes such as all-light lighting, dimming lighting, extinguishing and lighting of the LED 20 based on a signal from the external transmitter received by the receiving unit 10. Alternatively, an interrupt signal such as a power source detection signal of the commercial power source e is input from the power source monitoring unit 9 when the commercial power source e is turned on or off by a wall switch. Then, by directly outputting and driving a signal corresponding to the input interrupt signal to the inverter control unit 7 or the LED 20, the fluorescent lamp FL is turned on, dimmed, the fluorescent lamp FL is turned off, and the LED 20 is turned on. A plurality of lighting modes such as turning off the fluorescent lamp FL and the LED 20 are switched.

  The inverter control unit 7 causes the inverter drive circuit 5 to latch the inverter circuit 4 in the drive stop state and the latch to release the drive stop state latch of the inverter circuit 4 according to the signal input from the microcomputer 6. Release signal, voltage switching signal for switching output voltage from inverter circuit 4 from preheating voltage before starting to starting voltage, starting to give starting voltage after applying preheating voltage to filaments FL1a and FL1b of fluorescent lamp FL at the time of starting A sequence signal or, for example, a life end control signal for reducing the output from the inverter circuit 4 or stopping the inverter circuit 4 when the end of life is determined from the accumulated lighting time and the end of the life or the end of the life is approached. It has become.

  The inverter drive circuit 5 latches the inverter circuit 4 in a stopped state when the off signal from the microcomputer 6 and the inverter control unit 7 is low level, and the off signal from the microcomputer 6 and the inverter control unit 7 becomes high level. When the latch release signal is input, the inverter circuit 4 has a function of releasing the stopped latch and driving the inverter circuit 4. That is, when the microcomputer 6 is not activated, the inverter circuit 4 is latched in the drive stop state, and when the microcomputer 6 is activated, the inverter circuit 4 is unlatched in the drive stop state and the inverter circuit 4 is driven. ing.

  Next, the operation of the present embodiment will be described.

  In the lighting device 1, the voltage of the commercial AC power source e is full-wave rectified by the diode bridge 2,

Smoothing is performed by the sensor C1, the power factor is improved by the boost chopper circuit 3, and the voltage is boosted. The inverter circuit 4 reversely converts the high frequency alternating current to light the fluorescent lamp FL at a high frequency. The inverter circuit 4 is driven by the inverter drive circuit 5 under the control of the microcomputer 6 and the inverter control unit 7. In addition, the start-up sequence signal from the microcomputer 6 and the inverter control unit 7 preheats the filament FL1a and FL1b of the fluorescent lamp FL by applying the preheat voltage from the inverter circuit 4 at the start, and then the output voltage of the inverter circuit 4 is set to the start voltage. To switch on the fluorescent lamp FL.

  Here, lighting control of the fluorescent lamp FL and the LED 20 will be described. After the commercial power is turned on, the microcomputer 6 rises and enters a standby state when the microcomputer power generation unit 8 generates and supplies power for driving the microcomputer, which is lowered to 5 V, for example, 2 V or more. Then, it is detected whether an interrupt signal accompanying the operation of the wall switch 11 or the external transmitter is input.

  More specifically, for example, when the commercial power source e is turned off by the wall switch 11, that is, when the power detection signal from the power monitoring unit 9 to the microcomputer 6 is switched from H level to L level, for example, power detection. When the state of the power supply detection signal changes, for example, when the falling edge of the signal is detected, the standby state of the microcomputer 6 is once canceled.

  Then, the microcomputer 6 detects whether the power is turned on again by the wall switch 11 within a predetermined standby time. When the power is turned on again at the wall switch 11 within the predetermined standby time, the microcomputer 6 controls the inverter. The driving of the LED 20 is controlled via the unit 7 or the resistor R1, and the lighting mode of the fluorescent lamp FL or the LED 20 is switched. When this switching process is completed, the standby state is resumed.

  If no external operation is input by the wall switch 11 for a predetermined reset time or more, the microcomputer 6 controls the drive of the inverter control unit 7 or the LED 20 to set both the fluorescent lamp FL and the LED 20 to the extinguishing mode, and then stops. Reset.

  For example, when the commercial power source e is turned off by the wall switch 11, that is, when the power detection signal from the power monitoring unit 9 to the microcomputer 6 is switched from H level to L level, for example, the falling of the power detection signal is detected. When the state of the power detection signal is changed, such as when the microcomputer 6 is turned on, the standby state of the microcomputer 6 is once canceled.

  Then, the microcomputer 6 detects whether the power is turned on again by the wall switch 11 within a predetermined standby time. When the power is turned on again at the wall switch 11 within the predetermined standby time, the microcomputer 6 controls the inverter. The driving of the LED 20 is controlled via the unit 7 or the resistor R1, and the lighting mode of the fluorescent lamp FL or the LED 20 is switched. When this switching process is completed, the standby state is resumed.

  If no external operation is input by the wall switch 11 for a predetermined reset time or more, the microcomputer 6 controls the drive of the inverter control unit 7 or the LED 20 to set both the fluorescent lamp FL and the LED 20 to the extinguishing mode, and then stops. Reset.

  When a signal is output from the external transmitter in accordance with the operation of the external transmitter, the standby state of the microcomputer 6 is released when an interrupt signal is input to the microcomputer 6 via the receiving unit 10.

  Then, the microcomputer 6 controls the driving of the LED 20 via the inverter control unit 7 or the resistor R1 in accordance with the input interrupt signal to turn on the fluorescent lamp FL or the LED 20 or turn off both the fluorescent lamp FL and the LED 20; When this switching process ends, the standby state is resumed.

  The lighting control of the LED 20 in such a control form will be described. In other words, in the present embodiment, an AC voltage is directly supplied from the commercial power source e to the microcomputer power generation unit 8, and the microcomputer power generation unit 8 generates a DC voltage of 5V, for example, 2V or more, and supplies it to the microcomputer. Is. In short, since the microcomputer 6 can receive a signal from the external transmitter or the wall switch 11 from the light receiving unit 10 or the power detection unit 8 regardless of the on / off state of the fluorescent lamp FL and the LED 20, the microcomputer power generation unit 8 is provided. Since the power is directly supplied from the commercial power source e and the LED directly connected to the output unit of the microcomputer 6 can be lit by a DC power supply of 2 V or more, the LED 20 is output from the output unit of the microcomputer 6. When a signal related to the lighting control is directly received, it can be turned on by being connected to the output of the microcomputer power generation unit 8.

  According to the present embodiment, the power supply for lighting is taken by connecting the LED 20 to the output of the microcomputer power supply generation unit 8 connected between the outputs of the commercial power supply e to generate the power supply for driving the microcomputer. Since the LED 20 is directly connected to the output unit 8, even if the LED 20 as an auxiliary light source is used in addition to the fluorescent lamp FL, the microcomputer power generation unit 8 has a circuit configuration for lighting the LED separately from the lighting circuit of the fluorescent lamp FL. And the microcomputer 6.

  Further, by using the LED 20, there is no need to use an AC switch for turning on the auxiliary light source or an ON / OFF switch for turning on the auxiliary light source by a signal from the microcomputer, so that the circuit configuration is simple and inexpensive. be able to.

  Furthermore, the LED 20 is connected to the microcomputer power generation unit 8 connected between the outputs of the commercial power source e, and to the output unit of the microcomputer 6 that is always driven to receive a signal from the external transmitter. Since it is connected, the lighting control of the LED 20 can be easily and reliably performed.

  Furthermore, since the number of parts related to the lighting control of the auxiliary light source can be reduced as compared with the prior art, the overall size can be reduced.

  Further, by using the LED 20 as an auxiliary light source, structural parts such as a base can be reduced as compared with the case where a light bulb is used as an auxiliary light source, and heat generation and power consumption from the auxiliary light source can be suppressed. Can be improved.

  In addition to this embodiment, for example, a plurality of LEDs 20 are provided, each LED 20 is connected to the output unit of the microcomputer 6, and the lighting control of each LED 20 is combined to give a change in light amount as a whole auxiliary light source. Therefore, it is possible to set a lighting mode such as dimming.

Circuit diagram of lighting device of lighting device of this embodiment Bottom view of the lighting device of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 4 ... Inverter circuit light source, 6 ... Microcomputer, 7 ... Receiving part, 8 ... Microcomputer power generation part, 20 ... LED, 50 ... Illuminating device

Claims (1)

A lighting device for turning on the main light source;
A receiver for receiving a transmission signal from an external transmitter;
A microcomputer control unit having a reset voltage of 2 V or more and having a microcomputer to which a signal received by the receiving unit is input, and controlling the driving of the lighting device unit by an output signal from the microcomputer;
A microcomputer power generation unit connected between the outputs of the commercial power supply to generate a power source for driving the microcomputer of 2 V or more and to supply power to the microcomputer;
An LED connected to the output of the microcomputer power generation unit and connected to the output unit of the microcomputer for lighting control by an output signal from the microcomputer;
An illumination device comprising:

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