JPS6324591A - Dimmer - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a light control device suitable for use in stage lighting and the like.

BACKGROUND ART In this type of light control device, it is necessary to control the brightness of the illumination lamp and also to control the color of the illumination lamp.

An innovative prior art example of such a dimming VL arrangement is shown in Figure 1jS7. This light control device 1 includes a composite lamp L composed of three primary color lamps: a red lamp R1, a green lamp G, and a blue lamp B, and a composite lamp L that is provided for each lamp R, G, and B.

Phase control devices D 1 and D 2 that control the phase angle of G and B
.

D3 and potentiometers S 1 , S 2 , S 3 called 7-Aegs which are operated to set the dimming level of each lamp R, G , B. Phase control device D
Dimming ballasts B 1 , B 2 , and B 3 are interposed between the lamps R, G, and B and the lamps R, G, and B, respectively. Phase control device DI, D2. D3 has a phase control element such as a triator, and each 7 aeg S
Each lamp R1 according to the dimming level data from 1 to S3.
Controls the phase angle of the commercial AC power supply (2) that energizes G and B.

FIG. 8 is a graph for explaining the operation of the light control device 1. FIG. 8 (1) shows the voltage waveform of the red lamp R, and FIG. 8 (2) shows the voltage waveform of the green lamp G. , Figure 8 (
3) shows the voltage waveform of blue lamp B. For example, when the potentiometer S1 is set to the maximum level and the potentiometers S2 and S3 are set to the minimum level, the mode 1 state indicated by reference numeral 1111 between time 2 and time L1 in FIG. 8 is entered. This mode 1
In the state shown in FIG. 8 (1), the green lamp R is fully lit, and the green lamp G and the blue lamp B are turned on. It is lit. Therefore, the composite lamp is lit in red and is 1/1/2 of the value when each lamp R, G, and B are fully lit.
1 light will be lit at a light intensity of 3. Next, potentiometer SL,
Set S3 to the minimum level and potentiometer S2
When set to the maximum level, time t3 in Figure @8
The mode 2 state indicated by reference numeral -2 is reached from L4 to L4. In this mode 2, the red lamp R and the blue lamp B are turned off, and the green lamp G is fully lit. Therefore, the composite lamp is lit in green, and
The amount of light is 1/3 of the total. Also, from time t5 to time t6
In the mode 3 state indicated by the reference m3 leading to
The red lamp R and the blue lamp B are turned on at full power, so the composite lamp L is turned on with a mixture of red and blue, and is turned on with 2/3 of the total light amount. Also time t7
In the state of mode 4 indicated by reference numeral m4 from to time L8, the red lamp R is turned off, the green lamp B is turned on at full power, and the green lamp G is turned on with half the power.

Therefore, the composite lamp L is a mixture of red and blue, and is lit with a strong blue tone, and is 1/2 of the total light amount.
Lights up with a light intensity of 9. Further, in the state of mode 5 indicated by the reference mark II+5 from time t9 to time tlo, the composite lamp L is lit in a mixture of three colors, red, green, and blue, with a strong blue tone; The amount of light is about 1/2 of the total.

In this way, the potentiometers S 1 , S 2 ,
By individually operating S3, it is possible to control the phase angle of each lamp R, G, B and change the dimming level, thereby changing the color of the composite lamp L to a desired color. Furthermore, the amount of light of the matching lamp L can be set to a desired ratio with respect to full lighting.

In such prior art, although it is possible to make the overall light intensity of the composite lamp L variable, in order to perform this operation, the potentiometers S 1 , S 2 , and S 3 of each lamp R1G and B must be adjusted individually. Each item must be operated individually, resulting in poor operability. Furthermore, the color and light intensity of the composite lamp L are set by the combination of the amount of operation of these potentiometers Sl, S2 and S3.
It becomes difficult to adjust to the desired color and light amount.

Further, if it is desired to automatically change the color instead of manual operation, the control device for the operation section including the potentiometers S 1 , S 2 , and S 3 becomes complicated. Therefore, especially when controlling a large number of compound lamps, the operating section becomes very large and the operability deteriorates accordingly.

Purpose The purpose of the present invention is to solve the above-mentioned technical problem. A dimming system that solves the problem J, improves operability, achieves miniaturization, and allows dimming control of multiple lamps with different characteristics to a desired state. The purpose is to provide equipment.

Embodiment FIG. 1 is a block diagram showing the principle of the present invention. The light control device 10 includes a composite lamp L composed of lamps of three primary colors: a red lamp R, a green lamp G, and a blue lamp B, and a single lighting state specifying means for specifying the lighting state of the lamp by changing the voltage level. 11 and a plurality of differential amplifiers, the differential amplifiers being combined so that the composite lamp L can achieve a predetermined illumination state in response to the output voltage level from the illumination state specifying means 11; The illumination configuration setting means 12 and the dimming driving section 13 are included. The output voltage level from the lighting state setting means 12 is changed by the operation of the lighting state specifying means 11, and the output voltage level of the lamps R, G is changed.
, [3] are given to the dimming drive section 13 as respective dimming level data.

3! The I bias drive 3 controls the phase angle of each lamp R, G, and B based on the dimming level data. This allows the composite lamp L to achieve the desired illumination state in terms of color and light intensity.

FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention. The light control device 10a includes an illumination state specifying means 11 that specifies the illumination state of a composite lamp L composed of lamps R, G, and B, and a plurality of differential amplifiers.
illumination-condition setting means 12 for setting the dimming level of the lamps R, G to achieve the illumination state of the composite lamp L;
, B. The illumination state specifying means 11 has a potentiometer 14 called 7Agues. Ten E ports are applied to the potentiometer 14. Four potentiometers 14 are provided, and the dimming level of each lamp R, G, B is specified by changing the voltage level, and the illumination state of the composite lamp L is specified.

The dimming drive unit 13 includes a phase control device 18R that controls the phase angle of the commercial AC power supply V that powers the lamps R, G, and B.
18G, 18B, and dimming stabilizers 2519R, 19G, 19B provided for each lamp R, G, B. The phase 111II control devices 18R, 18G, 13B have phase control elements realized, for example, by triacs.

The illumination state setting means 12 sets the dimming level of each lamp R, G, B in accordance with the voltage applied by the potentiometer 14, and sets a plurality of levels in advance so that the desired illumination state of the composite lamp L can be achieved. VT is formed by a combination of differential amplifiers. In this embodiment, the illumination state setting means 1
2 is 9 differential increase 111m50P1. ○P2. OP3
．． -, OP9 is configured by combining ff1. The differential amplifiers OPI and ○P2 are for setting the dimming level of the red lamp R, and the differential amplifiers OP3. OP4. ○P5 is for setting the dimming level of the green lamp G, and is connected to the differential amplifier OP6.
゜OP7. OP, 8. OP9 is for setting the dimming level of the blue lamp B.

Inverting input terminal of differential amplifier OPI and differential amplifier ○P2
The non-inverting input terminal of is commonly connected to the potentiometer 14. A base MA voltage of (1/3)·E volts is applied to the non-inverting input terminal of the differential amplifier ○P1. (2/3) E volts is applied as a reference voltage to the input terminal of another differential amplifier OPI.
2 to the output terminal of the differential amplifier ○P2.

Connection point 20 on line 1 is line 12, output terminal 4
It is connected to the phase control device 18R via 0R. resistance r
1 and the connection point 20, the cathode of the voltage compensating diode 1 is connected to the line 1, and the anode of the diode 1 is grounded. Further, the cathode of voltage compensation diode 2 is connected to line node 1 between resistor r2 and connection point 20, and the anode of voltage compensation diode 2 is grounded.

Non-inverting input terminal of differential amplifier OP3 and differential amplifier ○P
The non-inverting input terminal of 4 is commonly connected to the potentiometer 14.
One connection is made. (1/3)·E volts is applied to the inverting input terminal of the differential booster P3. Differential amplification 2
The output terminal of OP3 is resistor r3 and line J! 3 to the inverting input terminal of the differential amplifier OP5. A connection point 21 on the upper solenoid 3 is connected to the inverting input terminal of the differential amplifier OP4. Line J at the opening of resistor r3 and connection point 21! 3, the cathode of 3 is connected to a voltage compensation diode, and the 7th wire of 3 is grounded to this diode. The output terminal of the differential amplifier OP4 is connected to the resistor r4.
,line! 4 to the non-inverting input terminal of the differential amplifier r:10Ps. The cathode of 4 is connected to the voltage compensation diode at the connection point 22 on the rhino 4,
Nodes 4 and 7 of this diode are grounded. The output terminal of differential amplifier OP5 is connected to resistor r5, line! 5. Connect to the phase control device 18G via the output terminal 40G.

The cathode of 5 is connected to a voltage compensation diode at the connection point 23 on the rayon 5, and the 7th node of 5 is grounded to this diode.

Non-inverting input terminal of differential amplifier ○P6 and differential amplifier OP
7 non-inverting input terminals are commonly connected to the potentiometer 14. (2/3)·E port is applied as a reference voltage to the inverting input terminal of the differential amplifier 27POP6. The output terminal of the differential amplifier ○P6 is connected to the inverting input terminal of the differential amplifier ○P9 via a resistor r6 and a line groove. Connection point 24 on the line groove is a differential amplifier OP8
is connected to the inverting input terminal of Resistor r6 and connection point 2
The line between 4! The cathode of 6 is connected to the voltage compensation diode at 6, and the 7 of 6 is connected to this diode.
The maid is grounded. (1/3)·E volts is applied as a reference voltage to the inverting input terminal of the differential amplifier 60P7. The output terminal of the differential amplifier OP7 is connected to the resistor r7 and the line J! 7 to the non-inverting input terminal of the differential amplifier ○P8. At the connection point 25 on the line gaff, the cathode of 7 is connected to a voltage regulating diode, and the AND of 7 is grounded to this diode. The output terminal of the differential amplifier OP8 is connected to the non-inverting input terminal of the differential amplifier OP9 via a resistor r8 and a line node 8. At the connection point 26 on the line 18, the cathode of 8 is connected to a voltage compensating diode, and the 7 node of 8 is grounded to this diode. The output terminal of differential amplifier OP9 is connected to resistor r9 and line J! 9. Phase control device 18 via output terminal 40B
Connected to B. At the connection point 27 on this Rhiano 9,
The cathode of 9 is connected to the voltage compensation circuit I'', and the 7 node of 9 is grounded to this diode.

In addition, in the Pt52 diagram, the connection point between the non-inverting input terminal of the differential amplifier OP3 and the non-inverting input terminal of the differential amplifier OP4 is shown as reference numeral 30.

FIG. 3 is a graph for explaining the operation related to the red lamp R of the illumination condition setting means 12, and FIG. 4 is a graph for explaining the operation related to the green lamp G of the illumination condition setting means 12. Yes, FIG. 5 shows the illumination state setting means 12.
FIG. 6 is a graph for explaining the operation related to the blue lamp L of the illumination state setting means 12.
2 is a graph illustrating an operation for setting the illumination state of the device. First, with reference to Figure 3, potentiometer 1
4 to change the input voltage of the illumination state setting means 12 from O volts to graph E volts. The input voltage from the potentiometer 14 is from O volts to +(1/3).
In the range up to E volts, the output of the differential amplifier OP2 is suppressed to 0 volts by the action of the diode 2. On the other hand, when the inverting input of the differential amplifier pOP1 is O volts, the output of the differential amplifier ○P1 is (1/3)·E port, and therefore the voltage at the connection point 20 is (1/3
)・E bolt. When the voltage level of the potentiometer 14 rises from 0 volts, the output of the differential amplifier OP1 gradually decreases as shown in FIG. When it reaches this point, the differential increase is 1 tsui! The output of 5OP1 will be O volts.

When the voltage level of potentiometer/-14 is in the range from (1/3)・E volts to (2/3)・E volts,
The output of the differential amplifier OP1 is maintained at O volts by the action of the diode 1, and the output of the differential amplifier OP2 is maintained at O volts by the action of the diode 2. The voltage at node 20 is therefore maintained at O volts.

Next, the voltage level of the potentiometer 14 is (2/3).
In the range from E to E volts, the differential amplifier OP
The output of I is suppressed to 0 volts by the action of diode 1, but on the other hand, when a voltage of 2/3E volts or more is applied to the non-inverting input terminal of differential amplifier OP2, the output of differential amplifier ○P2 starts to rise from O volt. That is, the voltage at the connection point 20 increases linearly as shown in FIG. 3, and the voltage level at the potentiometer 14 reaches E.
volt, the output of differential amplifier ○P2 becomes (1/3
)・E, so the voltage at the connection point 20 is also (1
/3)・E volts 5 The voltage at this connection point 20 is equal to the voltage at the output terminal 40R, so that the dimming level signal having the voltage change indicated by the reference numeral 41R shown in FIG. device 18R. Accordingly, the phase control device 18R controls the phase angle of the red lamp R according to the dimming level signal indicated by reference numeral 41R.

Next, the dimming operation of the green lamp G will be explained.

Referring to FIG. 4, assume that the voltage level of potentiometer 14 varies over a range of O to E volts, similar to red lamp R as described above. First, the connection point 30 changes depending on the voltage level of the potentiometer 14, as indicated by reference numeral d1 in FIG. The voltage at the connection point 21, which indicates the output voltage of the differential amplifier OP3, changes from O volts to (1/3)-E as shown by reference d2 in FIG. 4 due to the action of the diode 3. When it changes to volts, it remains at 0 volts. The voltage level of potentiometer 14 is (
On the other hand, the voltage at the connection point 22 increases when the potential of the potentiometer 14 is in the range from 0 volts to (1/3)・E volts, the voltage at the connection point 21 increases. Since the potential is 0 volts, the change is the same as the voltage change at the connection point 30. Next, potentiometer 14
When the voltage exceeds (1/3)·E volts, the potential difference between the connection point 30 and the connection point 21, that is, (1/3)·E volts, is shown as indicated by reference d3, and the voltage level of the potentiometer 14 increases. connection point 2 until reaches E volt.
The potential of 2 continues to be maintained at (1/3) E volts.

On the other hand, the potential of the output terminal 40G associated with the green lamp G is the potential difference between the connection point 22 and the connection α21, so that the level of the potentiometer 14 changes from 0 volts to (1
/3)・When rising to E volt, from 0 volt to (1/
3)・The level of potentiometer 14 increases linearly to E volt (1/3)・From E volt (2/3)・
When the potentiometer 14 rises to E, it decreases linearly from (1/3) E volts to 0 volts.
In the range where the voltage level increases from (2/3)·E to E volts, it remains at O volts. This voltage change indicated by reference numeral 41G is a dimming level signal.
The green lamp G is supplied to the phase control device 18G, and the phase angle of the green lamp G is controlled in accordance with this dimming level signal, so that the green lamp G is dimmed and turned on.

Next, with reference to FIG. 5, the dimming driving behavior related to the blue lamp B will be explained. The potential at the connection point 24 changes from O volts to (2/3) E port due to the action of the diode 6 on the output side of the differential amplifier ○P6, as shown by reference d4. The voltage level of the potentiometer 14 is maintained at O volts during the interval, and increases when the voltage level of the potentiometer 14 exceeds (2/3) E volts. When the voltage level of the potentiometer 14 reaches E volts, the potential of the connection point 24 becomes (1/3). /3) Reach E-volt. Further, the connection and the change in the potential of α25 are indicated by reference numeral d5 in FIG. In other words, due to the action of the diode 7 on the output side of the differential amplifier ○P7, the voltage level of the potentiometer 14 is suppressed to 0 volts in the range from O volts to (1/3)·E volts, and the voltage level of the potentiometer 14 becomes ( L/3)・E When the voltage is exceeded, the voltage gradually increases, and the potentiometer 1
When the voltage level of 4 reaches E volts, the connection, (
The potential of 25 reaches (2/3)·E volts. On the other hand, a change in the potential at the connection point 26 is indicated by reference numeral d6 in FIG. That is, there is a potential difference between the connection point 24 and the connection α25. Therefore, the voltage change at output terminal 40B is indicated by reference numeral 41B in FIG. The potential difference between the connection point 24 and the connection point 26, and therefore the dimming level signal indicated by reference numeral 41B in FIG. The light is dimmed and lit according to changes in the signal.

Pt5 showing changes in each output terminal 40R, 40G, 40B
As is clear from FIG. 6, by changing the voltage level by operating the potentiometer 14, each lamp R, G, B can be dimmed 7 in response to the change in voltage level.
α is turned on, and the color of the composite lamp L changes. For example, when the voltage level of the potentiometer 14 is O volts, the composite lamp L lights up in a single red color, and when the voltage level of the potentiometer 14 is (1/3)·E volts, the composite lamp L turns green. When the compound lamp L is lit in the 4i color and ψ is lit and the potentiometer 14 is at (2/3)·E volts, the composite lamp L is lit in a single blue color.

In addition, in these conditions, the full and α lamps of the composite lamp L, that is, 1/1/1 of the amount when each lamp R, G, and B are fully lit.
It is lit with a light intensity of 9.

Furthermore, the voltage level of potentiometer 14 is (1/6)
- When the voltage is E volts, the composite lamp L is lit with a mixture of red and green, and when the voltage level of the potentiometer 14 is (1/2) E volts, it is lit with a mixture of green and blue. When the voltage level of the potentiometer 14 is (5/13)·E volts, a mixed color of blue and red is illuminated.

The combination of differential amplifiers of the illumination state setting means 12 is
By making various combinations, which are not limited to those shown in the drawings, the voltage changes of the lamps R, G, and B when the potentiometer 14 is operated can be varied in various ways, and the illumination of the composite lamp L can be continuously performed. It can be varied in various ways, or it can be varied intermittently.

As another example, blinking 8! By combining Noh, it is possible to use a wider variety of lighting, and it is possible to further increase the performance effect of the stage.

In the above embodiment, the case where the color changes was explained, but there are front lighting lamps that illuminate the front of the stage, center lighting lamps that illuminate the vicinity of the center of the stage, and lamps that illuminate the rear of the stage. A rear illumination lamp is provided, and the present invention can be suitably implemented to change the illumination level of each of these front, center, and rear lamps.

Effects As described above, according to the present invention, the lighting state of the lamp can be specified by simply providing a single lighting state specifying means, and therefore the operability is significantly improved. This also allows the device to be made smaller. Furthermore, the illumination state of a plurality of lamps having mutually different characteristics can be controlled to a desired state.

[Brief explanation of the drawing]

FIG. 1 is a block diagram for explaining the present invention in detail, f
jS2 is a block diagram showing the configuration of a light control device 10a according to an embodiment of the present invention, and FIG. 3 is an illumination configuration related to the red lamp R. ! ! A graph for explaining the operation of the setting unit 12, FIG. 4, shows the green lamp Gl:I! Continuous lighting condition setting section 1
2 is a graph for explaining the operation of the blue lamp BI: FIG. 5 is a graph for explaining the operation of the related illumination state setting section 12, and FIG. A graph for explaining the operation, FIG. 7 is a block diagram showing the principle of the fancy prior art light control device, and FIG. 8 is a diagram for explaining the operation of the light control device shown in FIG. be. 10.10a... Light control device, 11... Lighting state specifying means, 12... Lighting state! ! ! Setting means, 13... Dimming drive section, 14... Potentiometer, 18 R, 1
8G, 18 B...Phase control device, R...Red lamp, G...Green lamp, B...Blue lamp, L...
・Composite lamp, ■...Commercial AC power supply, OPI to OP9
...Differential amplifier, K1-9...Diode agent Patent attorney Kei Saikyo Partial procedural amendment

Claims (1)

[Scope of Claims] A plurality of lamps having mutually different characteristics, a single illumination state specifying means for specifying an illumination state by the lamps by a change in voltage level, and a plurality of differential amplifiers, illumination condition setting means configured by combining the differential amplifier so that the lamp can achieve a predetermined illumination condition in response to the output voltage level from the illumination condition specifying means; and the illumination condition setting means. A dimming device comprising: a dimming drive section that drives a lamp in response to an output from the means.