JP2605102Y2 - Color changer device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color changer device for replacing a sheet-like color filter.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional color changer device (first conventional example). The color changer device in FIG. 3 includes a color filter 1 and first and second color filters.
And the first and second motors 4a and 4b which are drive sources 4.

The color filter 1 is sheet-shaped, transmits light, and has a different color at predetermined intervals as if a plurality of sheets are connected, and both ends are parallel at predetermined intervals. The first and second winding shafts 2 and 3 are fixed to the disposed first and second winding shafts 2 and 3, respectively, and are wound on the first and second winding shafts 2 and 3.

[0004] At one end of the first and second winding shafts 2 and 3, first and second motors 4a and 4b, which are driving sources 4, are provided and connected to them. Rotating the take-up shaft.

[0005] The color changer device configured as described above is arranged so that light from a lighting fixture passes through the color filter 1 and selects and uses a color filter depending on a scene to be illuminated. Is changed to produce a staging effect. For this reason, when selecting the color of the color filter 1, it is checked which of the first and second winding shafts 2 and 3 the color filter 1 of that color is wound at that time. The opposite take-up shaft is rotated outward by a motor at the drive source 4 on the opposite side, and the color filter 1 is attached to the rotated take-up shaft.
And a portion of a desired color is positioned between the first and second winding shafts 2 and 3. At this time, the winding shaft on the side that is not directly driven is rotatable with its motor turned off.

FIG. 4 shows another conventional example (a second conventional example). The difference from the first conventional example is that a single motor 4 as a driving source is provided and the motor 4 The driving torque is transmitted to the first and second winding shafts 2 and 3 via a belt 5 which is a transmission means, and the first and second winding shafts 2 and 3 are driven.
3 are rotated simultaneously and in the same direction, and the other configuration is the same as that of the first conventional example.

[0007]

However, in the color changer device shown in the first prior art constructed as described above, two motors are required as the driving source 4, and the motor is directly rotated by the driving source 4. The winding shaft on the opposite side to the winding shaft to be used becomes free, and the other motor cannot accurately follow the turning on of one of the driving sources 4, so that the color filter 1 sags or flaps. Color filter 1
However, there is a problem that noise is generated due to, for example, turbulence of the color filter 1 or fluttering or slack of the color filter 1 and contact with other components.

In the color changer device shown in the second conventional example, the first and second winding shafts 2 and 3 are simultaneously driven by one drive source 4, so that the two winding shafts 2 and 3 are driven simultaneously. 3, the rotation speed becomes the same,
There is a problem that sagging and turbulence are likely to occur due to the difference in the winding amount of the color filter 1.

The present invention has been made to solve such a problem, and an object of the present invention is to always apply a constant tension to a color filter to prevent the winding from being disturbed, and to prevent fluttering and flapping. An object of the present invention is to provide a color changer device that suppresses noise due to slack.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a sheet-like color filter 1 that changes the color of transmitted light by transmitting light from a lighting device, and a predetermined interval. First and second winding shafts 2, 3 which are arranged in parallel and wind the color filter 1.
First and second pulleys 2a, 3a respectively connected to the first and second winding shafts 2, 3;
And a drive source 4 for rotating the second winding shafts 2 and 3,
Selecting means 6 connected to the driving source 4 for selectively taking out the direction of rotation so as to rotate the first and second winding shafts 2 and 3 outward, and the driving source 4 via the selecting means 6 The rotation torque of the first and second pulleys 2a, 3a
a first and second transmission means 7, 8 for transmitting the first and second transmission means to the first and second transmission means.
The first and second ends of the winding shafts 2 and 3 respectively
The first and second slip wheels 2b, 3b are provided with a reversing transmission means 9 between the first and second slip wheels 2b, 3b.

[0011]

With the above arrangement, in the color changer device of the present invention, a sheet-like color filter 1 that changes the color of transmitted light by transmitting light from a lighting fixture is provided at a predetermined interval. First and second winding shafts 2, 3 arranged in parallel and winding the color filter 1, and first and second winding shafts 2, 3 connected to the first and second winding shafts 2, 3, respectively. Pulleys 2a, 3a and the first and second winding shafts 2, 3
A drive source 4 for rotating the first and second winding shafts 2 and 3 connected to the drive source 4 and selectively taking out a rotational direction so as to rotate the first and second winding shafts 2 and 3 outward; 6. A color changer device comprising first and second transmission means 7, 8 for transmitting the rotational torque of the drive source 4 to the first and second pulleys 2a, 3a via the first and second pulleys. First and second sliding wheels 2b, 3b are provided on one end sides of the first and second winding shafts 2, 3, respectively, and the rotation direction is set between the first and second sliding wheels 2b, 3b. Since the inversion transmission means 9 for inverting and transmitting is provided, the driving torque of the drive source 4 is selected by the selection means 6, and either one of the first or second pulley 2a or 3a is selected via one of the selected transmission means. Is transmitted to one side, and one of the winding shafts is turned outward. It is not to take up the color filter 1.

At this time, by means of the reversing transmission means 9 mounted on a slide wheel which rotates simultaneously with one of the winding shafts, the other winding shaft is rotated in the opposite direction to rotate the other winding shaft outward. Torque is transmitted. However, one of the winding shafts obtains the driving torque substantially directly from the driving source 4, and the other winding shaft receives the driving torque transmitted to the one winding shaft from the first and second slip wheels 2.
a, 3a, a slip occurs between the first and second slip wheels 2a, 3a and the reversing transmission means 9,
The driving torque transmitted to the other winding shaft is weaker than the driving torque of one winding shaft, and the one winding shaft rotates to wind the color filter 1.

Accordingly, tension is always applied to the color filter 1 in the outward direction in which the first and second winding shafts 2 and 3 take up the film, so that the color filter 1 does not loosen or flutter. In addition, it is possible to prevent the color filter 1 from being disturbed, to eliminate noise generated by the color filter 1 colliding with other parts due to slack, and to reduce noise caused by fluttering.

[0014]

1 and 2 show an embodiment of a color changer device according to the present invention. The color changer device shown in FIG.
And the first and second winding shafts 2, 3, the drive source 4, the selection means 6, the first and second transmission means 7, 8, the first and second pulleys 2a, 3a, the first and second No-slip wheels 2b, 3
b and inversion transmitting means 9.

The color filter 1 is sheet-like, transmits light, and has a different color at predetermined intervals, as in the conventional example. Both ends of the color filter 1 are disposed in parallel at predetermined intervals. The first and second winding shafts 2 and 3 are fixed to the first and second winding shafts 2 and 3, respectively, and are wound on the first and second winding shafts 2 and 3.

At one end of the first and second winding shafts 2 and 3, there are provided first and second pulleys 2a and 3a which are connected to the first and second winding shafts and rotate simultaneously. , 3a to the first and second slip wheels 2a, 3a
Is fixed. A one-way clutch 6 as a selection means is connected to a rotating shaft of one motor 4 as a driving source, and first and second pulleys 2a and 3a are connected between the one-way clutch 6 and the first and second pulleys 2a and 3a. The belts 7 and 8 as the transmission means are mounted to selectively transmit the rotational torque for rotating the winding shaft outward only to one of the belts. That is, the mounting portions of the belts 7 and 8 serving as the first and second transmission means provided on the one-way clutch 6 are divided into two portions 6a and 6b, and the belts serving as the first and second transmission means are respectively provided. 7 and 8 are mounted and rotate only in one direction which is a direction in which the winding shaft connected by the belts 7 and 8 is rotated outward, and only one of them rotates by the rotation of the driving source 4 and the other. Are set in a free state with respect to the rotation axis of the drive source 4.

The first and second slip wheels 2b and 3b provided on the first and second winding shafts 2 and 3 apply driving torque transmitted from the driving source 4 to one of the winding shafts. A cross belt 9, which is a reversal transmission means for reversing and transmitting the reverse to the other take-up shaft, is mounted in a figure eight shape.

With such a configuration, in the color changer device of the present embodiment, tension is always applied to the color filter 1 in the direction in which the first and second winding shafts 2 and 3 wind the winding. In addition, the color filter 1 is not loosened or fluttered, the winding of the color filter 1 is prevented from being disturbed, the noise caused by the color filter 1 colliding with other parts due to the slack is eliminated, and the noise due to flutter is also reduced. .

That is, the drive torque of the drive source 4 is selected by the selection means 6 and transmitted to only one of the first and second winding shafts 2 and 3 via the selected transmission means. By rotating one of the winding shafts, the color filter 1 is wound up, and by the reversing transmission means 9 mounted on a slide wheel which rotates simultaneously with the winding shaft, the other winding shaft is rotated in the opposite direction. Is transmitted.
However, one of the winding shafts obtains the driving torque almost directly from the driving source 4, and the other winding shaft receives the driving torque via the first and second slip wheels 2 b, 3 b and the reversing transmission means 9. To obtain the first and second slip wheels 2
b, 3b and the reverse transmission means 9, a slip occurs, and the driving torque transmitted to the other winding shaft becomes weaker than the driving torque of one winding shaft. Wind up filter 1. Therefore, a constant tension is always applied to the color filter 1.

[0020]

Since the color changer device of the present invention is constructed as described above, the drive torque of the drive source is selected by the selection means, and the first or second drive means is selected via the selected one of the transmission means. It is transmitted to one of the two pulleys, and one of the winding shafts is rotated outward to wind up the color filter. At this time, rotation torque for rotating the other winding shaft, which is in the opposite direction, to the outside is transmitted to the other winding shaft by the reversing transmission means mounted on the slide wheel that rotates simultaneously with the one winding shaft. You.
However, one winding shaft is almost directly from the drive source,
Drive torque, and the other take-up shaft is connected to the first and second slip wheels because the drive torque transmitted to one take-up shaft is transmitted through the first and second slip wheels. Slip occurs between the reversing transmission means, and the driving torque transmitted to the other winding shaft becomes weaker than the driving torque of one winding shaft, and one of the winding shafts rotates to wind the color filter. .

Therefore, tension is always applied to the color filter in the outward direction, which is the direction in which the color filter is wound by the first and second winding shafts, so that the color filter does not loosen or flutter. Disturbance can be prevented, noise generated when the color filter collides with other parts due to slack is eliminated, and noise due to flutter is also reduced.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a color changer device according to the present invention.

FIG. 2 is a schematic side view of the same.

FIG. 3 is a schematic perspective view showing a conventional color changer device.

FIG. 4 is a schematic side view showing another conventional color changer device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Color filter 2 1st winding shaft 2a 1st pulley 2b 1st sliding wheel 3 2nd winding shaft 3a 2nd pulley 3b 2nd sliding wheel 4 Drive source 6 Selection means 7 1st transmission Means 8 Second transmission means 9 Reverse transmission means

Claims (1)

(57) [Scope of request for utility model registration] 1. A sheet-like color filter that changes the color of transmitted light by transmitting light from a lighting device, and first and second color filters that are disposed in parallel at a predetermined interval and wind up the color filter. And the first winding shaft and the first winding shaft.
First and second pulleys respectively connected to the first and second winding shafts; a driving source for rotating the first and second winding shafts; and the first and second pulleys connected to the driving source.
Means for selectively taking out the direction of rotation so as to rotate the take-up shaft outwardly, and first and second means for transmitting the rotation torque of the drive source to the first and second pulleys via the means for selection. A first and second sliding wheels are provided at one end sides of the first and second winding shafts, respectively, and the first and second sliding wheels are provided. A color changer device provided with a reversing transmission means for reversing and transmitting the rotation direction between the slip wheels.