JPS60115193A - Light source color controller - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] Industrial Application Field Akira Honson is a light source color 3 > 17 in a lighting fixture that changes the color of light by changing the amount of light of the three primary colors of light.
L)-5.

The structure of the conventional example and its problems It was experimentally possible to change the light color after color mixing by individually adjusting the dimming of three groups of fluorescent lamps that emit light in the three primary colors of red, green, and blue. However, for several reasons, it has not been put into practical use as a general lighting fixture.

One of the reasons for this is that it is necessary to individually adjust the three dimming circuits to change the color of the light, making it difficult to adjust the color of the light. A commonly considered method is to simply line up three rotary or linear variable resistors and individually adjust the amount of light for red, green, and blue, but in order to produce the desired light color, It was difficult to judge how to adjust the three knobs, and the operation was not easy.

OBJECTS OF THE INVENTION The present invention solves these conventional problems, and by moving one knob in a plane.

To provide a controller that can easily change the color of light by arbitrarily combining the ratio of green and blue.

Structure of the Invention In the present invention, three linear variable resistors for level adjustment of dimmers connected to red, green, and blue lamps are connected to each other at one point at an angle of 120° to form a figure 7 shape. 1 to the movable part of each variable resistor.
A magnetizable guide rod with an opening angle of 20 mm is fixed parallel to two sides other than the sides of the variable resistor to be installed, and a bar-shaped magnet is placed in the space surrounded by these three guide rods. By inserting the guide rod and moving it within the figure 7-shaped plane, two of the three guide rods are attracted and moved together with the magnet, and the three
DESCRIPTION OF EMBODIMENTS OF THE INVENTION Examples of the present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is an example of a circuit block diagram of a light color variable lighting device to which the present invention is applied. 1.2.3 are fluorescent lamps that emit red, green, and blue light, respectively, and the wattage of each lamp is set so that when each lamp is fully lit, the light color after mixing the colors is white. Select. 4.6.
6 is a dimming circuit that dims each lamp individually; 7.8
．． 9 is a variable resistor for dimming of each dimming circuit.

FIG. 2 is a diagram showing the structure of the light source color controller according to the present invention, in which 7.8.9 is a linear variable resistor for dimming;
10.11.12 are iron guide rods fixed to the sliding parts of variable resistors 7, 8, and 9, respectively.Bent 120 degrees at the fixed parts, and attach the sliding parts of each variable resistor to the tip of the figure 7. The length and mounting angles are set so that it forms a regular hexagon when moved to the end. 13 is a cylindrical bar magnet, which is inserted into the space surrounded by the guide rods 10111.12, and touches all the guide rods 10.11.12, but does not touch the variable resistor 7.8.9. The structure is such that the guide rods 1o to 12 are moved in parallel on the Y-shaped surface while being attracted or pushed. The bar magnet 13 is
When it is at the center of the Y-shape, it is in contact with all guide rods 10 to 12, but when it moves in a certain direction, it moves away from one guide rod, moves while pushing the remaining two guide rods, and moves to the second guide rod.
change the value of each variable resistor. The rate of change is determined by the distance and direction the magnet moves from the center of the Y. bar magnet 1
When 3 is returned to the center of the Y-shape, the guide rod is attracted and moved together, and the resistance value returns to its original value. In this way, the combination of resistance values of the variable resistors 7, 8, and 9 can be freely adjusted depending on the position of the bar magnet 13, and the color of the light after color mixing can be adjusted by controlling the lamp dimming circuit shown in %/print. It becomes possible to set it easily.

Figure 3 shows the external appearance of the light source color controller according to the present invention. When the control is at the center, a white color is obtained, and depending on the direction of movement from the center, the light color gradually changes as shown in the figure. , the light color in the periphery becomes close to the primary color.

Effects of the Invention By using the light source color controller according to the present invention, a desired light color can be easily set by moving one knob on a plane. -! Furthermore, since the lamp of at least one of the three primary colors is always fully lit, it is possible to adjust the light color with minimal changes in brightness. Furthermore, the light source color controller according to the present invention has a simple structure;
Moreover, it operates reliably and is highly practical.

[Brief explanation of drawings]

FIG. 1 is a circuit block diagram of a light color variable lighting fixture to which the present invention is applied, FIG. 2 is a structural diagram of a light source color controller that is an embodiment of the present invention, and FIG. 3 is a circuit diagram of a light color controller that is an embodiment of the present invention. This figure shows the appearance of the light source color controller. 1...Red fluorescent lamp, 2...Green fluorescent lamp, 3...Blue fluorescent lamp, 4-6...
... Dimming circuit, 7-9... Linear variable resistor for dimming, 10-12... Guide rod, 13.
...Bar magnet.

Claims (1)

[Claims] Three linear variable resistors are arranged in a figure 7 shape on a plane so that they touch each other at one point at an angle of 120, and a magnetizable guide rod with an opening angle of 120 is provided in the movable part of the variable resistor. is fixed parallel to the side of the figure 7 formed by the variable resistor, and a bar-shaped magnet is inserted into the space surrounded by the guide rods to attract at least two of the guide rods. A light source color controller characterized in that three variable resistors are configured to be independently set to arbitrary resistance values by moving parallel to the plane of the character shape.