JPH03149798A - Dimming device for illumination lamp - Google Patents

Abstract

PURPOSE:To make the adjustment of illuminance unnecessary after an illumination lamp is lighted by reading the illuminance value stored in a memory section, and sending a control signal corresponding to the illuminance value if the present illuminance of the illumination lamp is zero when inputting signals. CONSTITUTION:A controller 2 updates and writes the generated phase of the value corresponding to the present illuminance of an illumination lamp 7, i.e., control signal C, in a memory section, and the dimming level before the light-off is stored in the memory section when the illumination lamp 7 is turned off. When the controller 2 receives an illuminance up command signal S2 or an illuminance down command signal S3 under the light-off state of the illumination lamp 7 that no control signal C is sent, it reads the illuminance value written in the memory section and sends the control signal C with the phase corresponding to the illuminance value to a trigger circuit 4. The illumination lamp 7 is then lighted at the illuminance with the previous dimming level. The adjustment of illuminance can be omitted after the illumination lamp 7 is lighted.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a light control device for a lighting lamp.

[Conventional technology]

Conventional dimmers of this type consist of a power control unit using, for example, a triac, and the firing phase of this triac is controlled by switch operation to adjust the power supplied to the lighting lamp. .

[Problem to be solved by the invention]

The switch includes, for example, an ON/OFF switch, first and second dimmer switches, and when the light is off, the
N10 FF When the F switch is pressed, the trybook is ignited at, for example, phase α = 30°, lighting the illumination lamp at high brightness (maximum illuminance), and in this high brightness lighting state, when the first dimmer switch is pressed, , for example, the triac has a phase α=12
When the light is turned on at 0, the illumination light shifts to medium brightness lighting (medium illuminance),
When the second dimmer switch is pressed, the triac is fired, for example, at a phase of α-150°, and the illumination lamp shifts to low-intensity lighting (low illuminance). It also has one ON/OFF switch and one
When you press the dimmer switch, the triac always conducts at a constant firing phase, and when you keep pressing the dimmer switch, the triac firing phase changes continuously, and the lighting lamp There are systems that change the brightness continuously, but in either case, the illuminance (dimming) level is not saved, so if you press the ON10 FF switch and turn on the illumination light at high brightness, In order to obtain the desired dimming level, it is inconvenient that the dimming operation must be performed each time.

The present invention has been made in order to solve the above-mentioned conventional problems, and it promotes a lighting control device that can automatically adjust the dimming level to the dimming level that was obtained before turning off the lighting when the lighting is turned on. The purpose is to provide

[Means to solve the problem]

In order to achieve the above object, the present invention sets the command signal to ON10.
It consists of an FF command signal, an illuminance increase command signal, and an illuminance decrease command signal, and when the control section receives an ON command signal, it sends out an upper limit control signal, and when it receives an OFF command signal, it sends out an upper limit control signal. When the illuminance increase command signal or illuminance decrease command signal is received, the control signal is continuously changed in the direction of increasing or decreasing the current illuminance of the illumination lamp while the signal is being input, and upon input of the signal,
When the current illuminance of the illumination lamp is zero, the illuminance value stored in the memory section is read out and the I control signal corresponding to the illuminance value is sent. The configuration is such that the level is the level of the control signal sent out by the control section.

[Effect]

In the present invention, when an illuminance increase command signal or an illuminance decrease command signal is issued by operating a switch while the illumination light is off, the value of the control signal sent by the control section immediately before the illumination light is turned off is read out from the memory section. Since the control signal is sent to the drive unit, the illumination lamp will be turned on at the illuminance that was on just before it was turned off, eliminating the need to adjust the illuminance after turning on the illumination lamp as in the past. It can be omitted.

〔Example〕

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

In FIG. 1, l is a key switch, and ON/O
FF switch IA, illuminance increase switch (UP switch)
IB and illuminance reduction switch (DOWN switch) IC
Consisting of Reference numeral 2 denotes a control section consisting of a microcomputer, which receives the switch output of the key switch I, decodes it, and sends a control signal to the trigger circuit 4 of the drive section 3.

The trigger circuit 4 sends a trigger pulse to the trybook of the power control section 5. The output of the power control section 5 is supplied to the illumination lamp 7 through a noise filter 6. Reference numeral 8 denotes a commercial power source that is a power source for the power control section 5. A zero-cross detector 9 detects the timing of the voltage of the commercial power source 8 passing through the zero point and supplies the detected timing to the control section 2. IO is a power supply circuit that supplies operating power to each part of the light control device, and receives power from the commercial power supply 8.

Next, the operation of this embodiment will be explained with reference to FIG.

FIG. 2 shows the relationship between the illuminance of the illumination lamp and the key switch described later.

It is assumed that the lighting lamp 7 is now turned off.

■ In this state, when the ON/OFF switch LA is pressed, the control unit 2 decodes the ON/OFF command signal Sl that is the switch output, and delays the phase by α = 300 from the timing when the voltage AC of the commercial power supply 7 passes the zero point. The control signal C that rises is sent to the trigger pulse generation circuit 4, and the trigger pulse generation circuit 4 sends out a trigger pulse P synchronized with the rise of the control signal C to the triac 5. As a result, the triac 5 becomes conductive at the phases α-30° and 150@ of the voltage AC, and the phase-controlled AC is supplied to the illumination lamp 7, which lights up at high brightness (upper limit illuminance).

When the ON10FF switch IA is pressed in this state, the control signal C disappears, the power supply to the illuminating lamp 7 is cut off, and the illuminating lamp 7 is turned off.

■ When the DOWN switch IC is pressed when the illumination lamp 7 is in the lighting state at a certain illuminance, for example at the upper limit illuminance mentioned above, the control unit 2 decodes the illuminance lowering command signal S3 which is the switch output and sends it out now. The generation timing (phase) of the control signal C is continuously delayed as long as there is an input. As a result, the firing phase α of the triac 5 increases continuously, the power supplied to the illumination lamp 7 decreases, and the illuminance of the illumination lamp 7 continuously changes to the lower illuminance side. The continuous change stops, and thereafter the light continues to be lit at the illuminance at the dimming level at the time of this stop.

■When the lighting lamp 7 is in a lighting state of a certain illuminance, for example, the lower limit illuminance, if you press the UP switch IC, the control unit 2 decodes the illuminance increase command signal S2 that is the switch output,
The generation timing (phase) of the control signal C that is currently being sent out is continuously advanced as long as there is an input. As a result, the firing phase α of the triac 5 becomes smaller continuously, the power supplied to the illuminating lamp 7 increases, and the illuminance of the illuminating lamp 7 continuously changes to the higher illuminance side. The change stops, and thereafter the light continues to be lit at the illuminance level at the time of this stop.

■The control unit 2 generates a value corresponding to the current illuminance of the lighting lamp 7, that is, the generation phase of the control signal C (hereinafter referred to as the illuminance value).
is updated and written in a memory section (not shown), and when the light is turned off, the dimming level before the light is turned off is stored in the memory section.

0 Therefore, when the control unit 2 receives the illuminance increase command signal S2 or the illuminance decrease command signal S3 while the illumination lamps 7 that are not transmitting the control signal C are turned off, the illuminance value written in this memory unit is is read out, and a control signal C having a phase corresponding to this illuminance value is sent to the trigger circuit 4. As a result, the illumination lamp 7 is turned on with the illuminance at the previous dimming level.

(2) In this case, if the illuminance increase command signal S2 or the illuminance decrease command signal S3 continues for more than 0.5 seconds, the control section 2 shifts to the operation (2) or (2) above.

In this way, in this embodiment, the illuminance of the illumination lamp 7 can be raised and lowered continuously by pressing the UP switch IB or the DOWN switch IC.

In addition, when the lighting lamp 7 is off, the UP switch I
When B or DOWN switch IC is pressed, the illuminant 7 is turned on at a certain illuminance, and this "certain illuminance" is the illuminance of the illuminating lamp 7 just before the above-mentioned extinguishment, so the illuminance when it is turned on is always fixed. The number of cases in which the illuminance needs to be adjusted after lighting is reduced, unlike in the conventional case, and the effort required to adjust the illuminance can be reduced compared to the conventional method.

〔Effect of the invention〕

As explained above, in the present invention, the value of the control signal when the lighting lamp is turned on is stored in the memory even after the lighting lamp is turned off, and the illuminance increase command signal or illuminance reduction command signal for increasing or decreasing the illuminance is not transmitted while the lighting lamp is on. If this occurs when the illumination light is turned off, the value of the control signal is read from the memory section and the control signal of the value is given to the drive section, so that the illumination light is turned on immediately before the light is turned off. Since the illuminance is turned on at a certain illuminance, it is possible to save the trouble of adjusting the illuminance after turning on the illumination lamp as in the conventional case.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 shows the relationship between the illuminance of the illumination lamp and the command signal from the key switch in the above embodiment. 1 A-ONloFF switch, IB-UP switch, Ic-DOWN switch, 31-----0 N10 FF command signal, S2-illuminance increase command signal, S3--1--illuminance decrease command signal, 2-
control unit, 4-) rigger circuit, 5----power control unit,
Fu illumination light. Patent applicant: Kaoru Hirota, Representative of Sekisui Chemical Co., Ltd.

Claims (1)

[Claims] A light control device that includes a control section that sends out a control signal based on a command signal, and a drive section that receives the control signal and supplies power of a magnitude corresponding to the control signal to the lighting lamp,
The command signal consists of an ON/OFF command signal, an illuminance increase command signal, and an illuminance decrease command signal, and when the control section receives the ON command signal, it sends out the upper limit control signal, and when it receives the OFF command signal, it sends out the upper limit control signal. The control signal that is present is extinguished, and
When receiving the illuminance increase command signal or illuminance decrease command signal, the control signal is continuously changed to increase or decrease the current illuminance of the illumination lamp while the signal is being input, and when the signal is input, the current illuminance of the illumination lamp is If is zero, then
The illuminance value stored in the memory unit is read and a control signal corresponding to the illuminance value is sent out, and the illuminance value is at the level of the control signal that was sent out by the control unit immediately before the lighting lamp was last turned off. A lighting light control device featuring: