JPH0329150B2 - - Google Patents

Description

TECHNICAL FIELD The present invention relates to a dimming device that transmits a dimming signal from at least one lighting control means to control dimming levels of a plurality of lighting loads.

BACKGROUND ART FIG. 4 is a block diagram showing the configuration of a conventional light control device. The dimming operation console 20 includes a plurality of faders F1 to Fn for setting the dimming level of the lighting load, a multiplexer 21 for selecting the faders F1 to Fn and outputting a dimming signal to the transmission line l1, and a fader F1. -Fn is input into the multiplexer 21, and a selection means 22 is included for inputting a fader selection signal for selecting the lighting load to be dimmed to the transmission line l2.
A dimming signal and a lighting load selection signal are inputted to the dimming panel B1 connected to the dimming control console 20 via transmission lines l1 and l2, and a signal conversion circuit 23 converts these serial signals into parallel signals. , and a drive circuit C1 that inputs a parallel-converted dimming signal and drives the selected lighting loads CH1 to CH40 at a dimming level. The parallel-converted dimming signal output from the signal conversion circuit 23 is used by a drive circuit C2 that drives the lighting loads CH41 to CH80 of the dimming panel B2 and a lighting load CH81 of the dimming panel B3.
It is also given to the drive circuit C3 that drives ~CH120.

FIG. 5 is a timing chart of signals related to the dimmer shown in FIG. 4. FIG. 51 shows a fader selection signal for selecting faders F1 to Fn output from the selection means 22 to the multiplexer 21, and FIG.
FIG. 5 shows a lighting load selection signal for selecting a lighting load. Reference mark f1 in FIG. 5 1
~f9 indicates the address of the selected fader F1~F9, and the reference numbers ch1~ch6 in FIG.
4 indicates the number of the selected lighting loads CH1 to CH64. From the selection means 22 of the dimming operation console 20 to the fifth
When a fader selection signal indicating the addresses f1 to fn of the faders F1 to Fn as shown in FIG. 1 is output, the multiplexer 21 selects the faders F1 to Fn according to the fader selection signal, and A dimming signal as shown in FIG. 5, set at ~Fn, is output to line l1. On the other hand, the selection means 22 outputs a fader selection signal and selects the selected lighting loads CH1 to
The numbers ch1 to chm of CHm are transmitted to the light control panel B1 as serial data as shown in FIG. In the dimmer panel B1, these signals are converted into parallel signals by the signal conversion circuit 23, and the lighting loads CH1 selected by the drive circuits C1 to C3 included in the dimmer panels B1 to B3 are converted into parallel signals.
~CH120 is driven at the set dimming level.

In such conventional dimmer devices, in order to transmit dimming signals to the required plurality of dimmer panels, the number of wirings equal to or greater than the number of drive circuits included in each dimmer panel is required. There is.

FIG. 6 is a block diagram showing the configuration of a light control device according to another embodiment of the prior art. The light control console 20 includes faders F1 to Fn and a light control panel B to be connected.
The number of multiplexers 21 is the same as the number of multiplexers 1 to B3, and a plurality of selection means 22 for supplying fader selection signals to each multiplexer 21 are provided. The dimming signal selected from each multiplexer 21 via lines l11 to l31 is input to each signal conversion circuit 23 of each dimmer B1 to B3, respectively. In addition, the line l1 from each selection means 22 of the light control console 20
The lighting load selection signal via 2 to 132 is sent to the light control panel B.
It is input to each signal conversion circuit 23 of 1 to B3. Each drive circuit C1 connected from each signal conversion circuit 23
~C3, the parallel-converted dimming signal is output. In a light control device with such a configuration, for example, 1
When the number of lighting loads controlled by dimming signals transmitted on one transmission line is 128, dimmer B
If the number of lighting loads included in each of 1 to B3 is 45, there is a drawback that the transmission capacity of the transmission line cannot be fully utilized.

Purpose An object of the present invention is to provide a light control device that can reduce the number of wiring lines for transmitting light control signals.

Embodiment FIG. 1 is a block diagram showing the configuration of a light control device that is the basis of the present invention. A single dimming operation console 1 serving as a dimming control means includes a plurality of faders F1 to F1 for setting dimming levels of lighting loads CH1 to CHm.
Fn, a multiplexer 2 that selects faders F1 to Fn and derives a dimming signal for the selected faders F1 to Fn;
selection means 3 for deriving a fader selection signal for selecting fader selection signals CH1 to Fn, and for deriving a lighting load selection signal for selecting lighting loads CH1 to CHm to be dimmed; and lighting loads in one dimming panel. CH1～CHn
Setting signal generation circuits 41, 4 for setting groups of
2, 43,... and setting signal generation circuits 41, 42,
According to the setting signal from 43,..., the transmission line L
11, L21, L31, ... and the transmission lines L12, L22, L3.
2, . . . include selection switch circuits 51, 52, 53, . . . for deriving lighting load selection signals. A dimming signal and a lighting load selection signal are input to each of the dimmer panels B1, B2, B3,... connected to the transmission lines L11, L21, L31,... and the transmission lines L12, L22, L32,..., and these signals Signal conversion circuits 61, 62, 63, . . .
and drive circuits C1, C2, C3, . . . that drive the lighting loads based on the input dimming level.

FIG. 2 is a timing chart of signals input and output in relation to the light control device shown in FIG.
The operation of the light control device shown in FIG. 1 will be explained with reference to the timing chart shown in FIG. 4. Second
Reference numbers f1 to f30 in the figure indicate the addresses of selected faders F1 to F30, and reference numbers f1 to f30 indicate the addresses of selected faders F1 to F30, and
1~ch120 are selected lighting loads CH1~CH
Shows the number 120. Selection means 3 of light control console 1
The multiplexer 2 selects the faders F1 to Fn based on the fader selection signal shown in FIG.
The dimming signals from 1 to Fn are the selection switch circuits 51 and 5.
Given to 2,53,... On the other hand, the selection means 3 outputs the fader selection signal and at the same time outputs the lighting load selection signal as shown in FIG. 2 to the selection switch circuits 51, 52, 53, . . . . Assuming that the number of lighting loads included in each of the dimmer panels B1, B2, B3, ... is 40, the setting signal generation circuit 4
1 has lighting loads CH1 to CH40, setting signal generation circuit 42 has lighting loads CH41 to CH80, and setting signal generation circuit 43 has lighting loads CH81 to CH1.
20 lighting load groups are set. When the setting signal indicating the set lighting load group is output from the setting signal generation circuit 41 to the selection switch circuit 51 in this way, the lighting load
While the dimming signals for CH1 to CH40 are being transmitted, the line L1 is connected to the transmission line L11, and the line L2 is connected to the transmission line L12. When the dimming signals for the other lighting loads CH41 to CHm are transmitted, the lines are cut off.
The dimming signal output from the selection switch circuit 51 via the transmission line L11 is shown in FIG. 2, and the lighting load selection signal output from the transmission line L12 is shown in FIG. 2. Similarly, the selection switch circuit 52 selects the line L1 while transmitting the dimming signals for the lighting loads CH41 to CH80.
and transmission line L21, connect line L2 and transmission line L22, and connect other lighting loads.
While the dimming signals for CH1 to CH40 and CH81 to CHm are being transmitted, these lines are cut off. The dimming signal output from the selection switch circuit 52 is shown in FIG. Transmission line L2
The lighting load selection signal output from 2 is as shown in FIG.
is shown. Similarly, the selection switch circuit 53 connects the line L1 to the transmission line L31 and the line L2 to the output line L3 while the dimming signals for the lighting load circuits CH81 to CH120 are being transmitted, and connects the line L1 to the transmission line L31 and connects the line L2 to the output line L3, and CH
While the dimming signals for CH1 to CH80 and CH121 to CHm are being transmitted, the lines are cut off. The transmission line L of this selection switch circuit 53
The dimming signal via 31 is shown in FIG. 28. The lighting load selection signal output via transmission line L32 is shown in FIG. 29.

The dimming panel B1 converts the dimming signal input via the line L11 and the lighting load selection signal input via the line L12 into parallel, and provides the converted dimming signal to the drive circuit C1. According to the input dimming signal, the drive circuit C1 dims the lighting load selected from among the lighting loads CH1 to CH40 to a set dimming level.

FIG. 3 is a block diagram showing the configuration of a light control device according to an embodiment of the present invention. The dimmer shown in FIG. 3 is similar in construction to the dimmer in FIG. 1, and FIG. 3 bears the same reference numerals corresponding to the construction in FIG. In this embodiment, the light control console 1 includes faders F1 to F1.
Fn, multiplexer 2, and dimming control means 3 are included. In the embodiment described above, the dimming console 1 included the setting signal generation circuits 41, 42, 43, ... and the selection switch circuits 51, 52, 53, ..., but in this embodiment, these configurations were changed. Dimmer B
1, B2, B3, etc. The light control console 1 and the light control panels B1, B2, B3, . . . are connected by lines L1, L2. In this embodiment, the configuration of the light control console 1 can be simplified compared to the previous embodiment.

By configuring the light control device in this way, the number of connection wires between the light control console 1 and the light control panels B1, B2, B3, ... or between the light control panels B1, B2, B3, ... can be reduced. . Also, as a result,
Since the number of connectors and terminals for wiring connections can be reduced, the dimming device can be made smaller and the manufacturing cost can be reduced, and the manufacturing process can also be simplified.

In the above embodiment, a light control device that transmits a light control signal as an analog signal was described, but a light control device that processes a light control signal as a digital signal also has the following advantages:
The invention can be practiced.

Effects As described above, according to the present invention, the light control panels B1, B2, and B3 that connect each lighting load can be connected to L1 and L2 as one unit, so that each lighting load can be connected to the light control console 1. The number of lines can be reduced compared to the connecting structure. Also, each light control panel B
1, B2, and B3 have setting signal generation circuits 41 and 4.
2, 43 and selection switch circuits 51, 52, 5
3, it is possible to group each load and place the dimmer panels B1, B2, and B3 near each group of lighting loads. Light disc B1,B
There is no need to understand the connection relationship between 2 and B3 and each of the lighting loads CH1 to CH120.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a light control device which is the basis of the present invention, FIG. 2 is a timing chart of signals related to the light control device of FIG. 1, and FIG. 3 is another embodiment of the present invention. FIG. 4 is a block diagram showing the configuration of the dimmer according to the prior art; FIG. 5 is a timing chart of signals related to the dimmer shown in FIG. 4. , FIG. 6 is a block diagram showing the structure of a light control device according to another embodiment of the prior art. 1...Dimmer control console, 2...Multiplexer, 3
...Operating means, F1 to Fn ... Fader, 41,
42, 43...setting signal generation circuit, 51, 52,
53...Selection switch circuit, 61, 62, 63...
...signal conversion circuit, B1, B2, B3...dimmer panel,
C1, C2, C3...drive circuit, L11, L1
2, L21, L22, L31, L32...Transmission line, CH1-CH120...Lighting load.

Claims (1)

[Claims] 1. A single light control console 1, a plurality of light control panels B1,
B2 and B3 are connected to common first and second transmission lines L1 and L2, and the light control panel B
A plurality of lighting loads CH1 to CH120 for each group are respectively connected to 1, B2, and B3, and the dimming operation console 1 has faders F1 to Fn for deriving a dimming signal representing the dimming level of each lighting load. and operating means 3 for deriving a fader selection signal for selecting a fader and for deriving a lighting load selection signal for selecting a lighting load corresponding to the selected fader to the second transmission line L2, and receiving the fader selection signal. and includes a multiplexer 2 that derives a dimming signal from a corresponding fader to a first transmission line L1, and each of the dimming panels B1, B2, B3 is configured to generate a setting signal that derives a setting signal for setting the group. circuits 41, 42, 43; a selection switch circuit that derives a lighting load selection signal via the second transmission line L2 included in the group set by the setting signal and a dimming signal via the first transmission line L1; 51, 52, 53; and a circuit that receives the dimming signal and the lighting load selection signal from the selection switch circuits 51, 52, 53 and drives the selected lighting load. Device.