JPH11312591A - Lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the stand-by power of a receiving part and a microcomputer. SOLUTION: A lighting system includes a light source 1, a lighting device 2 for driving the light source 1, a microcomputer 3 for controlling the state of the light source 1 by controlling the lighting device 2, a receiving part 5 giving a signal to the microcomputer 3 on receiving a remote control signal 4, and a signal detecting part 6 detecting the signal from the receiving part 5. When the light source 1 is turned off, the microcomputer 3 is supplied with no dc power 7 and is in a stand-by condition, while the receiving part 5 and the signal detecting part 6 are intermittently supplied with the dc power 7 and are in stand-by condition. When the signal is outputted from the receiving part 5 which receives the remote control signal 4, the dc power 7 is supplied to the microcomputer 3 in response to the signal outputted from the signal detecting part 6, and the dc power 7 is supplied continuously to the receiving part 5 and the signal detecting part 6. After the light source 1 has been turned off, when no signal appears in the output of the receiving part 5 until a predetermined time is elapsed, then the microcomputer 3 performs control so that the dc power 7 is not supplied to the microcomputer 3, as well as the dc power 7 is supplied intermittently to the receiving part 5 and the signal detecting part 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a lighting device controlled by a remote controller.

[0002]

2. Description of the Related Art A light source, a lighting device for driving the light source, a microcomputer for controlling the state of the light source by controlling the lighting device, and a receiving unit for receiving a remote control signal to provide the microcomputer with a signal. In the lighting device, when the light source is turned off, the receiving unit and the microcomputer are supplied with DC power and are on standby. When a signal is output from the receiving unit by receiving the remote control signal, the signal is output according to the content of the remote control signal. A microcomputer controls the state of the light source via the lighting device.

[0003]

However, since the standby power of the receiving unit and the microcomputer is considerable, the present invention aims at greatly reducing the standby power of the receiving unit and the microcomputer.

[0004]

Means for solving the problems are as described in the claims.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described. However, this is merely an exemplary embodiment adopted based on the present invention, and the present invention will be described based on matters unique to the embodiment. Therefore, the technical scope of the present invention should be determined based on the matters stated in the claims and matters substantially equivalent to the matters.

FIG. 1 shows a light source 1 such as a fluorescent lamp and a lighting device 2 such as an inverter for driving the light source 1.
A microcomputer 3 for controlling the state of the light source 1 by controlling the lighting device 2, a receiving unit 5 for receiving a remote control signal 4 to provide a signal to the microcomputer 3, and a signal for detecting a signal from the receiving unit 5 This is a lighting device including the detection unit 6. When the light source 1 is turned off, the microcomputer 3 is on standby without being supplied with the DC power source 7, and the receiving unit 5 and the signal detection unit 6 are on standby with the DC power source 7 being intermittently supplied. When a signal is output from the receiving unit 5 by receiving the remote control signal 4, the DC power 7 is supplied to the microcomputer 3 by the output signal from the signal detecting unit 6, and the receiving unit 5 and the signal detecting unit 6 Is supplied with a DC power supply 7 continuously.

After the light source 1 is turned off, if no signal appears on the output of the receiving unit 5 until a predetermined time has elapsed, the microcomputer 3
Controls not to supply the DC power supply 7 to the microcomputer 3, and also controls the DC power supply 7 to be supplied intermittently to the receiving unit 5 and the signal detection unit 6. In this embodiment, the microcomputer 3 controls the microcomputer 3 so that the DC power 7 is not supplied to the microcomputer 3 via the signal detector 6, and the DC power 7 is intermittently supplied to the receiver 5 and the signal detector 6. Is controlled to be.

In this embodiment, when the light source 1 is turned off and a signal is output from the receiver 5 by receiving the remote control signal 4, the switch means 8 is closed by the output signal from the signal detector 6. DC power supply 7 for microcomputer 3
(+5 V) is supplied to the receiving unit 5 via the power supply control unit 9.
And a DC power source 7 is continuously supplied to the signal detection unit 6.
In addition, an AC power supply 10 is supplied to the present lighting device as a DC through a rectifying / smoothing unit 11, and this DC voltage is applied to the lighting device 2 and the DC power supply 7. The state of the light source 1 is controlled by a remote control signal 4 emitted from a transmitter (not shown). When the light source 1 is turned on, power is continuously supplied to the entire lighting apparatus.

The receiving section 5 is called, for example, a light receiving module for receiving and processing the remote control signal 4 by infrared rays. The receiving section 5 receives the remote control signal 4 by a receiving element (not shown) and amplifies, detects, and shapes the waveform. A remote control code signal is output from the transistor 5a by performing processing or the like.
The power consumption of a general light receiving module is about several tens mW. The signal from the receiving unit 5 is input to the signal detecting unit 6 as VI.
N and the input side voltage VDC of the power supply control unit 9 are input and output through a comparator 6a, an integration circuit (also synonymous with a pulse counter) 6b, a level determination circuit 6c, and a latch circuit 6d. Things. The power consumption of the signal detection unit 6 and the power supply control unit 9 can be very small. The power consumption of the microcomputer 3 is about several hundred mW.

In the state where the light source 1 is kept turned off, the DC power supply 7 is not supplied to the microcomputer 3 because the switch means 8 is open, and the DC power supply 7 is supplied to the reception unit 5 and the signal detection unit 6 by the power supply control unit. 9 is intermittently supplied as VDC and stands by. This intermittent power supply state is shown in FIG. The power supply control section 9 can be opened and closed intermittently by incorporating an intermittent timer means, for example, and can intermittently supply the DC power supply 7 to the receiving section 5 and the signal detecting section 6. In this state, VDC is applied to the signal detector 6 via the resistor 5b.
IN is intermittently input. This state is shown in FIG.
It is shown in (B).

When a pulse-like remote control code is output as a signal from the receiving unit 5 by receiving the remote control signal 4, as shown in FIG.
In the section of 5 V, a pulse-like remote control code is input to VIN of the signal detection unit 6. In addition to this VIN, VDC is input to the comparator 6a of the signal detector 6, and both are compared to output only the pulse-like remote control code. The integrating circuit 6b integrates the pulse-shaped remote control code, and when the code reaches a predetermined level, the level determination circuit 6c outputs a predetermined signal to the latch circuit 6d. The latch circuit 6d enters a latch state by this signal, the switch means 8 is latched in a closed state by the latch output signal, and the DC power supply 7 is supplied to the microcomputer 3. In addition, the power supply control unit 9 is latched in the closed state by the latch output signal, and the DC power source 7 is continuously supplied to the receiving unit 5 and the signal detecting unit 6.

When the DC power supply 7 is supplied to the microcomputer 3, the microcomputer 3 can understand the remote control code signal from the receiving unit 5, so that the state of the light source 1 can be controlled according to the code signal. Become. When the light source 1 is turned on, the switch unit 8 and the power supply control unit 9 continue to be latched in the closed state, and the microcomputer 3 and the receiving unit 5
And the DC power source 7 is continuously supplied to the signal detection unit 6.

When the light source 1 is turned off by receiving the remote control signal 4, if the remote control signal 4 does not arrive by a predetermined time after the light is turned off and no signal appears on the output of the receiving unit 5, the microcomputer 3 Releases the latch state of the latch circuit 6d of the signal detection unit 6, the latch circuit 6d sends a latch release signal to the switch unit 8 and the power supply control unit 9, and the switch unit 8 is opened to supply the DC power to the microcomputer 3. 7
Will not be supplied. In addition, the continuous closed state of the power supply control unit 9 is released by the latch release signal, the power supply control unit 9 is intermittently closed by the timer operation, and the receiving unit 5 and the signal detecting unit 6 are provided with a DC power supply. 7 is supplied intermittently. Thus, the standby power of the microcomputer 3 can be substantially eliminated, and the standby power of the receiving unit 5 and the signal detecting unit 6 can be significantly reduced.

The width of the power supply section at the time of the intermittent power supply shown in FIG. 2 should preferably be such that the remote control code signal can be accommodated by at least several pulses.
In the latch state, and the DC power supply 7 is continuously supplied to the signal detection unit 6. Further, the width of the non-feeding section during the intermittent power feeding shown in FIG. 2 may be wide enough that a person does not feel a slow change in the state of the light source 1 when the user operates the remote control transmitter to transmit a remote control signal.

In the embodiment shown in FIG. 3, when the light source 1 is turned off, the DC power supply 7 is continuously supplied as VD to the signal detection unit 6, and the microcomputer 3 is not supplied with the DC power supply 7 and is on standby. The DC power source 7 is intermittently supplied to the receiving unit 5 as VDC and is on standby.
Is received, a signal is output from the receiving unit 5, a DC power source 7 is supplied to the microcomputer 3 by an output signal from the signal detecting unit 6, and the DC power source 7 is continuously connected to the receiving unit 5. It is supplied. And light source 1
If a signal does not appear at the output of the receiving unit 5 by a predetermined time after the light is turned off, the microcomputer 3 controls the microcomputer 3 so that the DC power supply 7 is not supplied to the microcomputer 3 and supplies the DC power supply 7 to the receiving unit 5. Is controlled to be supplied intermittently. Also in this embodiment, the microcomputer 3 controls the DC power supply 7 to be not supplied to the microcomputer 3 via the signal detection unit 6 and controls the DC power supply 7 to be supplied intermittently to the reception unit 5. doing. Also,
In this embodiment, the standby power of the signal detector 6 is increased as compared with the embodiment of FIG. 1, but the power consumption of the signal detector 6 can be made very small, so that it does not cause much problem. In any of the embodiments, the DC power supply 7
May be separately derived from the AC power supply 10 without passing through the rectifying / smoothing unit 11.

The embodiment shown in FIG. 4 is a modification of the embodiment shown in FIG. 1. In place of the above-described one latch circuit 6d, the latch circuits are distributed and associated with the switch means 8 and the power supply control unit 9, respectively. It is provided as a latch circuit 8a and a latch circuit 9a. In the state where the light source 1 is kept turned off, the DC power 7 is not supplied to the microcomputer 3 because the switch means 8 is open, and the DC power 7 is supplied to the receiver 5 and the signal detector 6 via the power supply controller 9. Is intermittently supplied as VDC and stands by.

When a pulse-like remote control code is output as a signal from the receiving unit 5 by receiving the remote control signal 4, the pulse-like remote control code is applied to the VIN of the signal detection unit 6 in a section where VIN is +5 V. Is entered. The comparator 6a of the signal detector 6 includes the V
VDC is input in addition to IN, and both are compared to output only the pulse-like remote control code. Integration circuit 6b
Integrates a pulse-like remote control code, and when it reaches a predetermined level, the level determination circuit 6c outputs a predetermined signal. The latch circuit 8a is latched by this output signal, the switch means 8 is latched in the closed state, and the DC power supply 7 is supplied to the microcomputer 3. In addition, the latch circuit 9a is also latched by the output signal, the power supply control unit 9 is latched in the closed state, and the DC power source 7 is continuously supplied to the receiving unit 5 and the signal detecting unit 6.

When the DC power supply 7 is supplied to the microcomputer 3, the microcomputer 3 can understand the remote control code signal from the receiving unit 5, so that the state of the light source 1 can be controlled according to the code signal. Become. When the light source 1 is turned on, the switch unit 8 and the power supply control unit 9 continue to be latched in the closed state, and the microcomputer 3 and the receiving unit 5
And the DC power source 7 is continuously supplied to the signal detection unit 6.

When the light source 1 is turned off by receiving the remote control signal 4, if the remote control signal 4 does not arrive until a predetermined time elapses after the light is turned off and no signal appears at the output of the receiving unit 5, this embodiment is executed. In the embodiment, the microcomputer 3 sends a signal for releasing the latch state to the latch circuit 8a, the switch means 8 is opened, and the DC power supply 7 is not supplied to the microcomputer 3. Further, the latch release signal from the microcomputer 3 is also supplied to the latch circuit 9a, the latch state of the latch circuit 9a is released, and the continuous closed state of the power supply control unit 9 is released. 9 is an intermittently closed state by the timer operation,
The DC power supply 7 is intermittently supplied to the signal detection unit 6. Thus, the standby power of the microcomputer 3 can be substantially eliminated, and the standby power of the receiving unit 5 and the signal detecting unit 6 can be significantly reduced.

The embodiment shown in FIG. 5 is a modification of the embodiment shown in FIG.
Instead, the latch circuits are distributed and arranged in association with the switch means 8 and the power supply control unit 9, respectively, and provided as the latch circuits 8a and 9a. When the light source 1 is turned off, the DC power supply 7 is continuously supplied as VD to the signal detection unit 6, the DC power supply 7 is not supplied to the microcomputer 3, and the reception unit 5 is on standby. When the power supply 7 is intermittently supplied as VDC and is on standby, and a signal is output from the receiving unit 5 by receiving the remote control signal 4, the latch circuit 8 a is output by the determination output signal from the signal detection unit 6. Is latched, the switch means 8 is closed, the DC power supply 7 is supplied to the microcomputer 3, the latch circuit 9a is also latched, the power supply control section 9 is closed, and the DC power supply 7 is continuously supplied to the receiving section 5. It is supplied. If no signal appears at the output of the receiving unit 5 until a predetermined time elapses after the light source 1 is turned off, the microcomputer 3 sends a signal for releasing the latched state to the latch circuit 8a, and the switch means 8 Opened, microcomputer 3
The microcomputer 3 sends a signal for releasing the latch state to the latch circuit 9a, and the power supply control unit 9 is intermittently closed, and the receiving unit 5 Is controlled so that the DC power supply 7 is intermittently supplied.

Although the example in which the latch circuit 6d is provided inside the signal detection unit 6 is shown, it is needless to say that the latch circuit 6d may be provided outside the signal detection unit 6, and the latch circuits 8a and 9a are respectively provided with the switch means 8, The example in which the power supply control unit 9 is provided inside the power supply control unit 9 has been described.

[Brief description of the drawings]

FIG. 1A is a circuit block diagram showing an embodiment of the present invention. FIG. 1B is a detailed circuit block diagram of the same part.

FIGS. 2A, 2B, and 2C are waveform diagrams of respective parts at the time of intermittent power supply.

3A is a circuit block diagram showing another embodiment of the present invention, and FIG. 3B is a detailed circuit block diagram of the same part.

FIG. 4A is a circuit block diagram showing still another embodiment of the present invention, and FIG. 4B is a detailed circuit block diagram of the same part.

5A is a circuit block diagram showing still another embodiment of the present invention, and FIG. 5B is a detailed circuit block diagram of the same part.

[Explanation of symbols]

 Reference Signs List 1 light source 2 lighting device 3 microcomputer 4 remote control signal 5 receiving unit 6 signal detecting unit 7 DC power supply

Claims (4)

[Claims] 1. A light source, a lighting device that drives the light source, a microcomputer that controls the state of the light source by controlling the lighting device, a receiving unit that supplies a signal to the microcomputer by receiving a remote control signal, and a receiving unit A signal detection unit that detects signals from the microcomputer. When the light source is turned off, the microcomputer is on standby without being supplied with DC power, and the reception unit and the signal detection unit are supplied with DC power intermittently. When a signal is output from the receiving unit by receiving a remote control signal, DC power is supplied to the microcomputer by an output signal from the signal detecting unit, and the receiving unit and the signal detecting unit are A lighting device to which DC power is continuously supplied. 2. The microcomputer according to claim 1, wherein if no signal appears at the output of the receiving unit until a predetermined time elapses after the light source is turned off, the microcomputer controls so that no DC power is supplied to the microcomputer and receives the signal. An illumination device that controls the DC power supply to be intermittently supplied to the unit and the signal detection unit. 3. A light source, a lighting device that drives the light source, a microcomputer that controls the state of the light source by controlling the lighting device, a receiving unit that supplies a signal to the microcomputer by receiving a remote control signal, and a receiving unit And a signal detection unit that detects a signal from the device.When the light source is turned off, DC power is continuously supplied to the signal detection unit, and the microcomputer is on standby without being supplied with DC power. DC power is intermittently supplied to the receiver, and the receiver is on standby. When a signal is output from the receiver by receiving a remote control signal, DC power is supplied to the microcomputer by an output signal from the signal detector. A lighting device in which DC power is continuously supplied to the receiving unit. 4. A microcomputer according to claim 3, wherein if no signal appears on the output of the receiving unit until a predetermined time elapses after the light source is turned off, the microcomputer controls so that DC power is not supplied to the microcomputer and receives the signal. A lighting device that controls the unit so that DC power is intermittently supplied.