Patent Publication Number: US-11047552-B2

Title: Light adjusting device with effect wheel and stage light with the light adjusting device

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     The present application is a national phase entry under 35 U.S.C. § 371 of International Application No. PCT/CN2020/083231, filed Apr. 3, 2020, which claims priority from Chinese Patent Application No. 201920331351.9, filed on Mar. 15, 2019, the disclosures of which are hereby incorporated herein by reference. 
     TECHNICAL FIELD 
     The present invention relates to the technical field of stage light, and in particular to a light adjusting device and a stage light with the light adjusting device. 
     BACKGROUND 
     On stages, evening parties, theaters, dance halls and other venues, it is often necessary to use a light adjusting device to produce different lighting effects, such as flowing water, flames, cloud, or starry sky, colorful aurora, etc., to render the activity atmosphere, which is usually achieved by placing an effect wheel in front of a light source. 
     With the improvement of aesthetics, the light adjusting device is naturally required to produce more beautiful lighting effects. The existing light adjusting device can achieve limited lighting effects, and cannot make full use of the existing effect wheel to achieve more lighting effects, which is not conducive to the sale and use of the product. 
     SUMMARY 
     The present invention provides a light adjusting device and a stage light with the light adjusting device in order to overcome at least one of the above-mentioned defects in the prior art. The light adjusting device enables different areas of an effect wheel to intercept the light beam, and various lighting effects can be realized. 
     In order to overcome the above-mentioned technical problems, the technical solution that the present invention adopts is: a light adjusting device, including an effect wheel for changing a visual effect of a light beam, and a moving mechanism for driving the effect wheel to move. The effect wheel is provided with an effect area around a center. The moving mechanism drives the effect wheel to move among a first pausing position, a second pausing position, a third pausing position and a fourth pausing position. When the effect wheel is in the first pausing position, the effect area of the effect wheel is located outside the light beam. When the effect wheel is in the second pausing position, a distance of the center of the effect wheel and a center of the light beam is less than or equal to one-half of a radius of the light beam. When the effect wheel is in the third pausing position and when the effect wheel is in the fourth pausing position, the center of the effect wheel is located outside the light beam, and the effect area at least partially intercepts the light beam. 
     The light adjusting device drives the effect wheel to move by the moving mechanism, so that the light beam is intercepted by different positions of the effect wheel. By the effects of the different positions of the effect area on the light beam, such as one or more of shading, color toning, and light splitting, corresponding light effect is presented, so as to realize full utilization of the effect wheel, showing various light effects. When the effect wheel is in the second pausing position, the center of the effect wheel and the center of the light beam roughly coincide to form an effect similar to the rotation of a wheel. When the effect wheel is in the third pausing position and when the effect wheel is in the fourth pausing position, the effect of two parts with different effect areas on the effect wheel can be presented. 
     Further, the moving mechanism includes a first moving unit and a second moving unit. The second moving unit drives the effect wheel to move among the first pausing position, the third pausing position and the fourth pausing position, while the first moving unit drives the effect wheel to move between the second pausing position and the third pausing position or the fourth pausing position. By cooperation of the first moving unit and the second moving unit, movement of the effect wheel among the first pausing position, the second pausing position, the third pausing position and the fourth pausing position is realized. 
     Further, the first moving unit drives the effect wheel to move between the second pausing position and the third pausing position or the fourth pausing position in a translational manner. The moving distance is short, and a linear movement is adopted, which can quickly realize the position change of the effect wheel. 
     Further, the first moving unit includes a mounting plate having a sliding rail, a first driving gear pivotally connected to the mounting plate, and a sliding plate slidably mounted on the sliding rail. The sliding plate is fixed with a rack having a same length direction as the sliding rail. The rack is meshed with the first driving gear. The second moving unit is mounted on the sliding plate. The first driving gear rotates, and the sliding plate is pulled by the rack to slide on the sliding rail of the mounting plate. 
     Further, the second moving unit drives the effect wheel to move among the first pausing position, the third pausing position and the fourth pausing position in a swinging manner. The moving distance is long. Compared with the linear movement, the swinging manner can reduce the space occupied by the effect wheel moving among the first pausing position, the third pausing position and the fourth pausing position. 
     Further, the effect wheel is mounted on the supporting plate. The second moving unit includes a synchronous belt, a driven wheel fixed to the supporting plate, and a driving wheel driving the driven wheel to rotate by the synchronous belt. 
     Further, when the effect wheel is in the second pausing position, the distance of the center of the effect wheel and the center of the light beam is less than or equal to one-fifth of the radius of the light beam. When the final projected light area is not large, it is not easy for the observer to notice that the center of the effect wheel is slightly deviated from the center of the light beam, which can better show the wheel effect and make the effect on the effect wheel roughly rotate around the center of the light beam. 
     Further, when effect wheel is in the second pausing position, the distance between the center of the effect wheel and the center of the light beam is zero. At this time, the wheel effect can be perfectly realized, and the effect on the effect wheel can be rotated around the center of the light beam. 
     Further, an included angle between a direction of a radius extending from the center of the effect wheel to the center of the light beam when the effect wheel is in fourth pausing position and a direction of a radius extending from the center of the effect wheel to the center of the light beam when the effect wheel is in the third pausing position is 80° to 90°. That is, the effects of the effect areas at the two approximately vertical radiuses of the effect wheel are presented. 
     Further, the included angle between the direction of the radius extending from the center of the effect wheel to the center of the light beam when the effect wheel is in the fourth pausing position and the direction of the radius extending from the center of the effect wheel to the center of the light beam when the effect wheel is in the third pausing position is 90°. That is, the effects of the effect areas at the two positions where the radiuses of the effect wheel are absolutely vertical are presented. 
     Further, it further includes a rotation driving mechanism for driving the effect wheel to rotate. Thereby, the rotation of the effect wheel can be realized, and the effect that the light adjusting device can present can be increased. 
     Further, the rotation driving mechanism includes a second driving gear. The second driving gear drives a saw-toothed edge of a periphery of the effect wheel in a direct or indirect meshing manner. 
     Further, the effect area radiates radially outward from the center of the effect wheel. At this time, when the effect wheel is in the third pausing position and when the effect wheel is in the fourth pausing position, the effects of vertical or horizontal stripes can be achieved, respectively. 
     Further, the effect area on the effect wheel at least has one effect element of a continuous dynamic pattern, a fixed pattern, a rotating pattern, a prism and a color filter. 
     The present invention further provides a stage light including a light source and the light adjusting device of any of the foregoing. The light adjusting device is mounted on a holder. The holder is provided with a loophole. The light beam is formed by a light emitted by the light source passing through the loophole. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a structural diagram of the effect wheel of a light adjusting device according to the present invention in a first pausing position. 
         FIG. 2  is a structural diagram of the effect wheel of the light adjusting device according to the present invention in a third pausing position. 
         FIG. 3  is a structural diagram of the effect wheel of the light adjusting device according to the present invention in a fourth pausing position. 
         FIG. 4  is a structural diagram of the effect wheel of the light adjusting device according to the present invention in a second pausing position. 
         FIG. 5  is structural diagram of a moving mechanism of the light adjusting device according to the present invention. 
         FIG. 6  is a schematic diagram of the moving mechanism of the light adjusting device according to the present invention from another perspective. 
         FIG. 7  is a schematic diagram of the cooperation of the light adjusting device according to the present invention and a holder. 
     
    
    
     In the drawings:
           100 : effect wheel;  110 : effect area;  120 : saw-toothed edge;  200 : moving mechanism;  210 : first moving unit;  211 : mounting plate;  212 : sliding rail;  213 : first driving gear;  214 : sliding plate;  215 : rack;  220 : second moving unit;  221 : driven wheel;  222 : synchronous belt;  223 : driving wheel;  300 : supporting plate;  400 : second driving gear;  500 : holder;  510 : loophole.       

     DETAILED DESCRIPTION 
     The accompanying drawings are only for illustrative purposes and cannot be construed as limitations on this patent. In order to better illustrate the embodiment, some parts of the accompanying drawings may be omitted, enlarged or shrunk, and do not represent the size of an actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings. The positional relationship described in the accompanying drawings is only for illustrative purposes, and cannot be understood as a limitation of this patent. 
     As shown in  FIG. 1  to  FIG. 4 , the present invention provides a light adjusting device, including an effect wheel  100  for changing a visual effect of a light beam, and a moving mechanism  200  for driving the effect wheel  100  to move. The effect wheel  100  is provided with an effect area  110  around a center. The moving mechanism  200  drives the effect wheel  100  to move among a first pausing position (as shown in  FIG. 1 ), a second pausing position (as shown in  FIG. 4 ), a third pausing position (as shown in  FIG. 2 ) and a fourth pausing position (as shown in  FIG. 3 ). When the effect wheel  100  is in the first pausing position, the effect area  110  of the effect wheel  100  is located outside the light beam. When the effect wheel  100  is in the second pausing position, a distance of the center of the effect wheel  100  and a center of the light beam is less than or equal to one-half of a radius of the light beam. The radius of the light beam refers to the radius of the light beam illuminated on the effect wheel  100 . Generally, the plane on which the effect wheel  100  is located is perpendicular to the illumination direction of the light beam, and the distance between the center of the effect wheel  100  and the center of the light beam refers to the vertical distance. When the effect wheel  100  is in the third pausing position and when the effect wheel  100  is in the fourth pausing position, the center of the effect wheel  100  is located outside the light beam, and the effect area  110  at least partially intercepts the light beam. 
     The light adjusting device drives the effect wheel  100  to move by the moving mechanism  200 , so that the light beam is intercepted by different positions of the effect wheel  100 . By the effects of the different positions of the effect area  110  on the light beam, such as one or more of shading, color toning, and light splitting, corresponding light effect is presented, so as to realize full utilization of the effect wheel  100 , showing various light effects. When the effect wheel  100  is in the second pausing position, the distance between the center of the effect wheel  100  and the center of the light beam is relatively close to form an effect similar to the rotation of a wheel. When the effect wheel  100  is in the third pausing position and when the effect wheel  100  is in the fourth pausing position, two parts of effects of the different effect areas  110  on the effect wheel  100  can be presented. 
     The effect area  110  on the effect wheel  100  at least have one effect element of a continuous dynamic pattern, a fixed pattern, a rotating pattern, a prism and a color filter. That is, the effect wheel  100  of the present invention can be a fire disc or a similar disc (having continuous dynamic pattern), a prism or a similar mirror, a colored sheet or a similar sheet (both are color filter), a gobo or a similar disc (having fixed pattern or rotating pattern), etc., and also can be one of them or a mixture of more of them, as long as the visual effect of the light beam can be changed. It should be noted that the visual effect described in the present invention is not limited to observation by the naked eye, but can also be observed by instruments or equipment. 
     As shown in  FIG. 5  and  FIG. 6 , in a preferred embodiment of the present invention, the moving mechanism  200  includes a first moving unit  210  and a second moving unit  220 . The second moving unit  220  drives the effect wheel  100  to move among the first pausing position, the third pausing position and the fourth pausing position. The first moving unit  210  drives the effect wheel  100  to move between the second pausing position and the third pausing position or the fourth pausing position. In other embodiments, the effect wheel  100  can also be driven to move between the third pausing position and the fourth pausing position by the second moving unit  220 , while the first moving unit  210  drives the effect wheel  100  to move between the second pausing position and the first pausing position, the third pausing position or the fourth pausing position. Those skilled in the art can even set more moving units to drive the movement of the effect wheel  100 , as long as it can realized the movement of the effect wheel  100  among the first pausing position, the second pausing position, the third pausing position and the fourth pausing position by the moving mechanism  200 . 
     In a preferred embodiment of the present invention, the first moving unit  210  drives the effect wheel  100  to move between the second pausing position and the third pausing position or the fourth pausing position in a translational manner. The moving distance is short, and a linear movement is adopted, which can quickly realize the position change of the effect wheel  100 . In other embodiments, the first moving unit  210  drives the effect wheel  100  to move between the second pausing position and the third pausing position or the fourth pausing position in other manner, such as arc, S-curve movement, as long as the effect wheel  100  can be moved smoothly between the second pausing position and the third pausing position or the fourth pausing position. 
     In a preferred embodiment of the present invention, the first moving unit  210  includes a mounting plate  211  having a sliding rail  212 , a first driving gear  213  pivotally connected to the mounting plate  211 , and a sliding plate  214  slidably mounted on the sliding rail  212 . The sliding plate  214  is fixed with a rack  215  having a same length direction as the sliding rail  212 . The rack  215  is meshed with the first driving gear  213 . The second moving unit  220  is mounted on the sliding plate  214 . The first driving gear  213  rotates, and sliding plate  214  is pulled by the rack  215  to slide on the sliding rail  212  of the mounting plate  211 , thereby realizing the movement of the effect wheel  100  between the second pausing position and the third pausing position or the fourth pausing position. In other embodiments, the first moving unit  210  can also drive the sliding plate  214  to slide by a belt, a screw, etc., as long as the effect wheel  100  can be smoothly moved between the second pausing position and the third pausing position or the fourth pausing position. 
     In a preferred embodiment of the present invention, the second moving unit  220  drives the effect wheel  100  to move among the first pausing position, the third pausing position and the fourth pausing position in a swinging manner. The moving distance is long. Compared with the linear movement, the swinging manner can reduce the space occupied by the effect wheel  100  moving among the first pausing position, the third pausing position and the fourth pausing position. Of course, in other embodiments, the second moving unit  220  may also drive the effect wheel  100  to move among the first pausing position, the third pausing position and the fourth pausing position in a swinging manner in other ways, such as linear, polyline, S-curve and other motion modes, as long as the effect wheel  100  can be smoothly moved among the first pausing position, the third pausing position and the fourth pausing position. 
     As shown in  FIG. 1  to  FIG. 4 , in a preferred embodiment of the present invention, the effect wheel  100  is mounted on the supporting plate  300 . The second moving unit  220  includes a synchronous belt  222 , a driven wheel  221  fixed to the supporting plate  300 , and a driving wheel  223  driving the driven wheel  221  to rotate by the synchronous belt  222 . In other embodiments, the driving wheel  223  may also be directly meshed with the driven wheel  221  or driven by a transmission gear. 
     In a preferred embodiment of the present invention, when the effect wheel  100  is in the second pausing position, the perpendicular distance between the center of the effect wheel  100  and the center of the light beam is less than or equal to one-fifth of the radius of the light beam. When the final projected light area is not large, it is not easy for the observer to notice that the center of the effect wheel  100  is slightly deviated from the center of the light beam, which can better show the wheel effect and make the effect on the effect wheel  100  roughly rotate around the center of the light beam. 
     Most preferably, when the effect wheel  100  is in the second pausing position, the distance between the center of the effect wheel  100  and the center of the light beam is zero, that is, the center of the effect wheel  100  is completely coincident with the center of the light beam. At this time, the wheel effect can be perfectly realized, and the effect on the effect wheel  100  can be rotated around the center of the light beam. 
     In a preferred embodiment of the present invention, an included angle between a direction of a radius extending from the center of the effect wheel  100  to the center of the light beam when the effect wheel  100  is in the fourth pausing position and a direction of a radius extending from the center of the effect wheel  100  to the center of the light beam when the effect wheel  100  is in the third pausing position is 80° to 90°. That is, the effects of the effect areas  110  at the two approximately vertical radiuses of the effect wheel  100  are presented. 
     Most preferably, the included angle between the direction of the radius extending from the center of the effect wheel  100  to the center of the light beam when the effect wheel  100  is in the fourth pausing position and the direction of the radius extending from the center of the effect wheel  100  to the center of the light beam when the effect wheel  100  in the third pausing position is 90°. The direction of the radius extending from the center of the effect wheel  100  to the center of the light beam refers to the direction of the radius extending vertically from the center of the effect wheel  100  to the center of the light beam. That is, the effects of the effect areas  110  at the two absolutely vertical radiuses of the effect wheel  100  are presented. 
     In a preferred embodiment of the present invention, it further includes a rotation driving mechanism for driving the effect wheel  100  to rotate. Thereby, the rotation of the effect wheel  100  can be realized, and the effect that the light adjusting device can present can be increased. 
     In a preferred embodiment of the present invention, the rotation driving mechanism includes a second driving gear  400 . The second driving gear  400  drives a saw-toothed edge  120  of a periphery of the effect wheel  100  in a direct or indirect meshing manner. 
     In the present application, the effect wheel  100  is a bearing structure, an inner ring is provided with the effect area  110 , an outer ring is fixed with the supporting plate  300 , and the inner ring protrudes along a direction of a center line of the bearing. The saw-toothed edge  120  is provided on a periphery of the protruding part, so as to drive the effect wheel  100  to peripherally rotate. 
     Furthermore, the second driving gear  400  of the rotation driving mechanism is driven by a motor, the driven wheel  221  of the second moving unit  220  is fixed to the supporting plate  300  and is pivotally connected to a shaft of the motor by a bearing, and the rotation of the driven wheel  221  and the rotation of the second driving gear  400  do not interfere with each other. Optionally, the driven wheel  221  and the second driving gear  400  are located on both sides of the supporting plate  300 , respectively. 
     In a preferred embodiment of the present invention, the effect area  110  radiates radially outward from the center of the effect wheel  100 . At this time, when the effect wheel  100  is in the third pausing position and when the effect wheel  100  is in the fourth pausing position, the effects of vertical or horizontal stripes can be achieved, respectively. Preferably, the effect wheel  100  is a fire disc, and the light-transmitting part can be hollowed out or filled with transparent material, which can achieve the effects of flame, water flow, and white clouds. 
     The light adjusting device described in the present invention is first rotated by the driving wheel  223  of the second moving unit  220 , and the synchronous belt  222  is used to drive the driven wheel  221 , so that the effect wheel  100  swings from the first pausing position to the third pausing position, and then the driving wheel  223  continues to rotate, so that the effect wheel  100  swings from the third pausing position to the fourth pausing position. Then the first driving gear  213  of the first moving unit  210  rotates, and the rack  215  drives the sliding plate  214  to slide, so that the effect wheel  100  is translated from the fourth pausing position to the second pausing position. When the effect wheel  100  moves among the first pausing position, the second pausing position, the third pausing position and the fourth pausing position, by driving the saw-toothed edge  120  of the effect wheel  100 , the second driving gear  400  of the rotation driving mechanism can make the effect wheel  100  rotate synchronously. 
     As shown in  FIG. 7 , the present invention further provides a stage light including a light source and the light adjusting device of any of the foregoing. The light adjusting device is mounted on a holder  500 . The holder  500  is provided with a loophole  510 . The light beam is formed by a light emitted by the light source passing through the loophole  510 . 
     In a preferred embodiment of the present invention, a radius of the loophole  510  is less than or equal to one-half of the radius of the effect wheel  100 . 
     Obviously, the above-mentioned embodiments of the present invention are only examples to clearly illustrate the present invention, and are not intended to limit the implementation of the present invention. For those of ordinary skill in the art, other changes or variations in different forms can be made on the basis of the above description. It is not necessary and impossible to enumerate all the implementations herein. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the scope of protection claimed by the present invention.