JPH1027506A - Illumination color changer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow one of rolls to be easily and freely attached to and removed from a base with one hand by enabling a second roll to be removed from the base when a bearing element is pushed in and thereby disengaged from a third rotating shaft. SOLUTION: In this illumination color changer, a second rotating shaft 4 is provided integrally with a second roll 6, and a bearing element 30 which is freely operated via a spring is provided at the end portion of the roll 6, so that by pushing the bearing element 30 into the roll 6, the bearing element 30 can be attached to or removed from the third rotating shaft 32. Therefore to install the roll 6, after the bearing element 30 is pushed inward with one hand to correspond to the rotating shaft 32, the bearing element 30 is released, so that it can be engaged with the rotating shaft 32. To remove the roll 6 installed, the bearing element 30 is pushed inward by one hand to disengage the bearing element 30 from the rotating shaft 32 to enable removal of the roll 6 from a base 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color changer for lighting, and more particularly to a novel color changer for moving a color film with one motor and allowing one roll to be easily attached to and detached from a substrate with one hand. About improvement.

[0002]

2. Description of the Related Art Although not shown, this type of illumination color changer generally used in the past has a first rotation axis and a second rotation axis disposed in parallel in a box-shaped base. The first and second rotating shafts are fixedly provided with first and second rolls extending in the axial direction. One end of a long color film is fixed to the first roll, and the other end is fixed to the second roll after the color film is wound around a large number. The color film is arranged so that a large number of colors are separated along the longitudinal direction, that is, the moving direction. Therefore, an arbitrary color can appear between the first roll and the second roll according to the winding amount of the color film.

[0003]

Since the conventional color changer for lighting is configured as described above, there are the following problems. In other words, the replacement of the roll around which the color film is wound is performed by removing the screw of the bearing of the roll and disassembling the roll, and it is necessary to use both hands for the replacement, which requires a short time. It was difficult to adapt to the needs of

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. In particular, a color film is moved by a single motor, and one roll can be easily attached to and detached from a base with one hand. And a new improvement for

[0005]

SUMMARY OF THE INVENTION A lighting color changer according to the present invention comprises first and second color filters arranged at both ends of a substrate.
It comprises first and second rotation shafts for rotating the rolls, and a color film wound and wound on the first and second rolls, and a light is applied to the color film from behind to arbitrarily control the color film. In the illumination color changer configured to project the color of
A bearing body operably provided at an end of the roll, a spring provided in the second roll for biasing the bearing body, and a third rotation provided on the base and engaged with the bearing body A shaft, and the second roll having the second rotating shaft integrally, the engagement with the third rotating shaft is released by pushing in the bearing body, and the second roll is moved from the base. The configuration is such that it can be removed. In the illumination color changer according to the present invention, the second roll is provided integrally with the second rotating shaft, and the end of the second roll is provided with a bearing body operable via a spring. By pushing the bearing into the second roll, the bearing can be attached to and detached from the third rotating shaft. Therefore, when the second roll is mounted, the bearing body is pushed inward with one hand so as to correspond to the third rotating shaft, and when the hand is released, the bearing body is engaged with the third rotating shaft. be able to. When the second roll is to be removed after being mounted, the bearing is pushed inward with one hand to release the engagement between the bearing and the third rotating shaft. Can be removed from

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a color changer for lighting according to the present invention will be described below in detail with reference to the drawings. In FIG. 1, a reference numeral 1 denotes a box-shaped base, a circular opening 2 is formed at the center of the base 1, and a first rotation is provided at both ends of the base 1 so as to sandwich the opening 2. The shaft 3 and the second rotation shaft 4 are arranged in parallel. First and second rolls 5 and 6 are disposed on the first and second rotating shafts 3 and 4, and the second roll 6 is fixed to the second rotating shaft 4 via pins (not shown). Have been. In addition,
The first roll 5 has a first roll piece 5 a located at one end of the first rotating shaft 3, a second roll piece 5 b located at the center of the first rotating shaft 3, and is located at the other end of the first rotating shaft 3. The long color film 8 is supported by three ends including a third roll piece 5c, and both ends and the center of the one end 8a of the long color film 8 in the width direction are supported.

Further, at the end of the second roll 6, as shown in FIG. 5, a bearing body 30 is constantly urged outward through a spring 31 so as to be operable. It is detachably engaged with a third rotating shaft 32 provided on the fourth bearing 10b. That is, when the second roll 6 is mounted between the third and fourth bearings 10a and 10b (FIG. 1 shows a state where the second roll 6 is already mounted), as shown in FIG. The state immediately after) is shown.
Since the recess 30a of the No. 0 and the projection (formed of, for example, a spring) 33a of the coupling plate 33 provided at the end of the third rotary shaft 32 are configured to be mutually coupled and detachable, the state shown in FIG. When the bearing body 30 is in a free state, the bearing body 30 projects downward in FIG. 5 and is coupled to the coupling plate 33, and the concave portion 30a and the projection 33a are coupled to rotate the second roll 6. it can. Also, the second
When the roll 6 is detached, the second roll 6 can be easily detached from the third and fourth bearings 10a, 10a because the bearing body 30 is separated from the coupling plate 33 in the state of FIG. Further, both ends of the first rotating shaft 3 are connected to the base 1.
Are rotatably held by a pair of first and second bearings 9a and 9b provided on the first bearing.
0a, and each bearing 9a, 9b and 1
0a, 10b are supporting members 11a, 11
b and 12a, 12b (see FIG. 2).
The color film 8 is arranged so that a number of colors are divided in the longitudinal direction, that is, the moving direction. Accordingly, the color of the color film 8 corresponding to the opening 2 can appear arbitrarily according to the winding amount of the color film 8.

[0008] First and second pulleys 12 and 13 are fixedly mounted at outer positions of the first and third rotary shafts 3 and 32 through the bearings 9b and 10b, respectively. The pulley 13 is connected via a timing belt 14 as shown in FIG. 3, and the timing belt 14 is used to transmit the driving force of the timing belt 14 to the first and second pulleys 12 and 13 properly. The biasing idler roller 15 is urged. A DC servo motor 16 with an encoder is disposed in the base 1, and a driving pulley 17 provided on the DC servo motor 16 and a second pulley 13 of the second rotating shaft 4 are connected via a driving belt 18. Are linked. Therefore, this DC servo motor 16
Is driven, the second through the drive belt 18
The rotating shaft 4 and the third rotating shaft 32 rotate, and the rotating force is transmitted to the first rotating shaft 3 via the timing belt 14. As a result, the first rotating shaft 3 and the second rotating shaft 4
Can be rotated synchronously in the same direction. When synchronizing the first rotating shaft 3 and the second rotating shaft 4, it is preferable that the diameter of the first pulley 12 and the diameter of the second pulley 13 be the same.

Next, the first rotating shaft 3 is divided into a main driving shaft 3a having the first pulley 12, and a driven shaft 3b arranged linearly along the main driving shaft 3a. Further, as shown in FIG. 4, the driven shaft 3b is fixed to one end 5bA of the cylindrical second roll piece 5b via a connecting pin 19. The other end 5bB of the second roll piece 5b
From above, the driving shaft 3a is inserted through the hollow portion 20. Since the driving shaft 3a needs to be rotatably disposed with respect to the one end 5bA, the driving shaft 3a is disposed at both ends of the hollow portion 20. The second roll piece 5b is rotatably provided via the first and second bearings 21 and 22 described above.

A spiral spring (for example, a mainspring spring) 23 is disposed in the hollow portion 20, and a viscous fluid 24 made of oil or the like is sealed therein. The other end 23b is fixed to the shaft 3a, and the other end 23b is fixed to the one end 5bA. After fixing the color film, the spiral spring 23 turns the main driving shaft 3a in the direction A to apply pretension. This makes it possible to prevent the color film from becoming loose due to the thickening of the color film. Even when the main driving shaft 3a is rotated in the direction of arrow B opposite to the direction of arrow A, tension is applied to the color film 8 and slack of the color film 8 can be prevented. Further, the spiral spring 23 is not limited to a spiral spring like a spiral spring, but an initial object can be achieved by using a spiral wound bamboo.

Further, a cooling fan 25 for preventing the color film 8 from being deformed by heat received from the light, an origin finding photo sensor 26 for reading an origin symbol attached to the color film 8 are provided in the base 1. , A board 27 for controlling the DC servomotor 16 and the like, a connector 28 for connecting to a power supply (not shown), and a connector 29 for sending a signal by remote control to the board 27.

Next, the operation of the illumination color changer of the present invention will be described based on the above-described configuration. First, the second roll 6 having the wound color film 8 is mounted on the third and fourth bearings 10a and 10b, and after the color film 8 is wound around the first roll 5 and the mounting of the color film 8 is completed, While the color film 8 is wound by the first and second rolls 5 and 6, the color film 8 is stopped at the initial position by the origin detection photosensor 26, and the position is set as the origin (reference). An address is determined for each color arrangement of the film 8. Next, after selecting an arbitrary address of the color film 8 by remote operation, when the DC servo motor 16 is driven, the first and second rotating shafts 3 and 4 rotate by a predetermined amount in the same direction, and the color film 8 is rotated. 8 is moved in the direction of arrow C, for example. At this time, the color film 8 is wound around the second roll 6 by a predetermined amount, and is sent out from the second roll 5 by a predetermined amount. In the case where the color film 8 is moved in the direction of arrow D, the above is reversed.

While the color film 8 is moving, the rotational energy stored in the spiral spring 23 causes
A reaction force to rotate the first roll 5 in the rotation direction of the first rotation shaft 3, that is, the direction opposite to the feeding direction of the color film 8 occurs, and as a result, the first roll 5 and the second roll 6 The rotating movement is performed while an appropriate tension is always applied to the color film 8 in between. Thereafter, the DC servo motor 16 is stopped at the same time when the color film 8 reaches a predetermined address. At this time, the rotation of the main driving shaft 3a of the first rotating shaft 3 and the rotation of the second rotating shaft 4 are also immediately stopped. As a result, the first roll 5 with the spiral spring 23 interposed therebetween is driven by the inertia force of the first rotating shaft 3 Attempts to spin in the same direction as. However,
The abrupt idle force of the first roll 5 that causes the color film 8 to be loosened is converted into a relatively gentle idle force by the buffering force of the viscous fluid 24 sealed in the hollow portion 20 of the second roll piece 5b. . On the other hand, this idling force is generated by the spiral spring 2
3, the desired color appears between the first roll 5 and the second roll 6, that is, in front of the opening 2 while generating tension in the color film 8. Then, the color can be projected toward a stage of a theater or a set of a photography studio by a light (not shown) arranged behind the opening 2. The above-mentioned viscous fluid 24
Is particularly effective when the first rotating shaft 3 is rotated at a high speed in response to the high-speed feeding of the color film 8.

[0014]

The illumination color changer according to the present invention is configured as described above, so that the following effects can be obtained. That is, the bearing member operably provided on the second roll can be pushed inward to engage with the third rotating shaft, and the second rotating member is operated only by operating the bearing member.
The roll can be attached and detached, and the color film can be exchanged instantly and easily.

[Brief description of the drawings]

FIG. 1 is a front view showing a state where a front cover is removed from a lighting color changer of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a bottom view of FIG. 1;

FIG. 4 is a cross-sectional view showing a main part of the illumination color changer of the present invention.

FIG. 5 is a sectional view showing a main part of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base | substrate 3 1st rotating shaft 4 2nd rotating shaft 5 1st roll 6 2nd roll 8 Color film 30 Bearing 31 Spring 32 3rd rotating shaft

Claims (1)

[Claims] 1. A first and a second member disposed at both ends of a base (1).
First and second rotation axes (3, 4) for rotating the rolls (5, 6);
A color film (8) that is wound around the first and second rolls (5, 6) and is wound up and rewinded. In the illumination color changer configured to project forward, a bearing body (30) operably provided at an end of the second roll (6), and a bearing body (30) provided in the second roll (6). A spring (31) for biasing the bearing body (30)
And a third rotating shaft (32) provided on the base (1) and engaged with the bearing body (30), and the second roll (6) integrally having the second rotating shaft (4). ) Is configured to release the engagement with the third rotating shaft (32) by pushing in the bearing body (30) and to remove the second roll (6) from the base (1). A color changer for lighting.