CN1773165A - Reflectors for stage lights - Google Patents

Abstract

A reflecting device of stage lamp comprises a base arranged above a machine body, a bracket combined on the base, a first motor arranged on the base, a second motor arranged on the bracket, a first transmission mechanism driven by the first motor, a second transmission mechanism driven by the second motor, a mirror bracket pivoted on a rotating shaft of the first transmission mechanism and a reflecting mirror combined on the mirror bracket; the second transmission mechanism is hung on the pin joint part of the mirror bracket by a rope loop, so that the reflector can be driven by the first motor and the second motor respectively to reflect the light beam projected by the light source around the light projection direction or around the rotation intersecting with the light projection direction and making a change angle.

Description

Reflectors for stage lights

technical field

The invention provides a reflector for a stage light, in particular to a reflector which can be rotated to change the reflection angle of the light beam projected by the light source of the stage light.

Background technique

Usually, in order to get a better entertainment effect in the performance of the stage play, changing lighting effects are required to cooperate, and the changing light and shadow that appear on the stage are usually shaped by stage lights. Regarding the structure of a traditional stage light, as shown in Figure 1, a light source 11 that projects light beams longitudinally or horizontally, at least one lens 12 configured along the direction of light projection, and a lens 12 that can be rotated to change and pass through are generally provided inside a body 1. Reflecting means 2 of the light reflection angle of the lens.

As shown in Fig. 1 and Fig. 2, the traditional reflection device 2 mainly includes a bracket 24 combined above the body 1, a first motor 21 mounted on the bracket 24, a swivel frame 25 driven by the first motor 21, The second motor 22 that is installed on this revolving frame 24, the mirror frame 26 that can be driven by this second motor 22 and a reflector 23 that is installed on this mirror frame 26; When the first motor 21 rotates to drive the revolving frame 25 When rotating, the reflector 23 will rotate around the direction of light projection, and when the second motor 22 rotates to drive the mirror frame 26 to rotate, the reflector 23 will rotate around the direction intersecting with the light projection. The motors 21 and 22 drive the reflector 26 to rotate at varying angles to reflect light beams, so that the light emitted by the stage lights has the effect of changing light and shadow.

Although the reflector of the above-mentioned traditional stage lights can change the rotation direction and speed of the slewing frame and the mirror frame from time to time to make the reflector change in various angles relative to the direction of light projection, the traditional reflector has a load. It is so large that the first motor 21 and the second motor 22 need to have higher horsepower. Furthermore, since the slewing frame 25 carries the second motor 22 and the mirror frame 26, the load is quite large, so the first motor 21 with high horsepower is required to drive the slewing frame 25 smoothly, and the slewing frame and the mirror frame are alternately In doing direction and speed conversion rotation, so to make the slewing frame or the mirror frame can rotate smoothly is to overcome a considerable rotational inertia, resulting in two motors need to have a higher horsepower; in addition, the second motor 22 is carried in the meeting On the slewing frame 25 that is often rotated, the positioning of the second motor 22 is easily loosened.

Contents of the invention

The main purpose of the present invention is to provide a kind of reflector with progressive stage lights, the reflector has a reflector that can rotate and reflect to change the light beam projected by the stage light source, and the two motors that drive the reflector to rotate are individual It is installed on a base and a bracket for positioning, and the two transmission mechanisms that drive the reflector to rotate in different directions are independent.

The present invention is a specific structure for achieving the above object and other effects, which is characterized in that it comprises:

A base, which can be installed above the body of the stage light, has a shaft hole near the center of the base;

a first motor installed on the base, gears are installed on the rotating shaft of the first motor;

The first transmission mechanism rotatably supported on the base has a rotating shaft that can pass through the shaft hole of the base, a gear with external teeth sleeved on the top section of the rotating shaft and a gear that meshes with the first motor driven gear, and a fork is formed on the bottom section of the rotating shaft;

A bracket installed on the base, which has a bottom cover and a wall panel;

A second motor installed on the bracket, a gear is installed on the rotating shaft of the second motor;

The second transmission mechanism has a driven gear meshed with the gear of the second motor and a rope ring, and a winding part with a ring groove is extended from the driven gear to provide the first end of the rope ring to hang ;

A mirror frame, which has a bottom plate that can be combined with a reflector and a pivot joint, the pivot joint is pivotally connected in the fork of the above-mentioned rotating shaft, and the pivot joint has a hook for hanging the second end of the rope loop ring groove; and

A reflecting mirror is mounted on the mirror frame;

When the first motor rotates, the driven gear and the external gear of the first transmission mechanism will drive the rotating shaft to rotate, so that the mirror frame rotates with the mirror; when the second motor rotates, the driven gear of the second transmission mechanism will The gear and the rope ring drive the pivoting portion of the mirror frame to pivot, so that the mirror frame pivots with the mirror around the pivoting portion.

The reflector can be rotated around the direction of light projection or around the direction perpendicular to the light projection.

Preferably, the pivot joint part of the above-mentioned mirror frame is provided with two protruding stop parts separately to limit the rotation angle of the mirror frame.

Preferably, the above-mentioned gear set on the rotating shaft has a groove, and a limiting post arranged on the base can be incorporated in the groove to limit the rotation angle of the rotating shaft.

Accordingly, the mirror has a small rotational inertia when rotating in direction and speed, so that a low-horsepower motor can be used to make the mirror rotate smoothly, and it is beneficial to control the rotation speed and direction of the mirror frame and the mirror.

Description of drawings

Figure 1: It is a schematic diagram of a traditional stage light;

Figure 2: is an exploded view of the components of the reflection device of Figure 1;

Fig. 3: is the schematic diagram of a specific embodiment of stage lamp formed according to the present invention;

Figure 4: is a longitudinal sectional view of the reflection device of Figure 3;

Figure 5: is a three-dimensional appearance view of the reflection device of the present invention; the cover is removed in the figure;

Fig. 6: is the three-dimensional exploded view of the reflecting device of the present invention;

Figure 7: is a transverse sectional view of the reflection device of Figure 3;

Figure 8: is a schematic diagram of the reflector in Figure 4 being driven by the first motor; and

FIG. 9 is a schematic diagram of the reflector in FIG. 4 being driven by the second motor.

Detailed ways

The structure and effect of specific embodiments of the present invention are further described below in conjunction with the accompanying drawings:

Please refer to FIG. 3 , which is a specific embodiment of the stage light formed according to the present invention. The stage light generally consists of a body 3 and a reflecting device 5, wherein the body has a light source 31 capable of projecting a beam of light, a lens arranged along the direction of light projection, and at least one turntable 32 for changing the pattern or color of the projected beam, and the reflection The device 5 is arranged on the top of the body 3 through the connection of the support arm 4, and the reflection device 5 has a reflector 56 that can rotate to change the reflection angle of the light; the structure of the body 3 and its internal components is known. Without further ado.

The present invention is characterized in that the reflector 5 of the stage light is newly designed. Please refer to Fig. 4, shown in Fig. 5, this reflection device 5 comprises a base 51 combined on the top of the above-mentioned support arm 4, a bracket 57 combined on the base 51, a first motor installed on the base 51 52. The second motor 58 installed on the bracket 57, the first transmission mechanism 53 driven by the first motor 52, the second transmission mechanism 54 driven by the second motor 58, a mirror frame 55 and a reflector 56.

As shown in FIG. 6 , there is a shaft hole 511 near the center of the base 51 , and a motor mounting hole 512 is located away from the shaft hole 511 , and a cover 59 is covered on the base 51 .

The first motor 52 is mounted on the back of the base 51 through the motor installation hole 512 , and a gear 521 protruding into the upper side of the base is installed on the rotating shaft of the first motor.

The first transmission mechanism 53 is rotatably supported on the above-mentioned base 51, and it has a rotating shaft 531 that can pass through the above-mentioned shaft hole 511, a gear 532 with external teeth that is connected to the top section of the rotating shaft 531, and a gear 532 with the above-mentioned A driven gear 533 meshed with the gear 521; a bearing 534 is set between the rotating shaft 531 and the shaft hole 511, and the bottom section of the rotating shaft 531 forms a fork 535 separated by an appropriate distance, and the driven gear 533 is a belt gear, It has an internal tooth 536 meshing with the external teeth of the gear 532, so that when the first motor 52 rotates, it can drive the rotating shaft 531 to rotate through the driven gear 533 and the external gear 532; the gear 532 fitted on the rotating shaft 531 has a groove Slot 537 , in which a limiting column 513 disposed on the base 51 can be inserted. As shown in FIG. 7 , the limiting column 513 is used to limit the rotation angle and the original starting position of the rotating shaft 531 .

The bracket 57 has a bottom cover 571 that can be combined with the base 51 and a wall plate 572 vertically extending from the bottom cover, wherein the bottom cover 571 has a shaft hole 574 to cover the above-mentioned first transmission mechanism correspondingly 53, and the wall plate 572 has a motor mounting hole 573.

The second motor 58 is installed on the back side of the wallboard 572 through the installation hole 573, and a gear 581 extending into the inside of the wallboard is installed on the rotating shaft of the second motor.

The second transmission mechanism 54 has a driven gear 541 and a rope ring 542 meshed with the above-mentioned gear 581, wherein the driven gear 541 passes through a supporting plate 543 and is mounted on the wallboard 572, and extends out from the driven gear 541. A hanging portion 544 with a ring groove is used for hanging the first end 545 of the loop 542 , and a positioning plate 546 can be assembled on the hanging portion 544 to prevent the loop 542 from sliding.

The mirror frame 55 has a base plate 551 for combining the reflector 56 and a pivot portion 552, wherein the pivot portion 552 is pivotally connected to the bottom end of the fork portion 535 of the above-mentioned rotating shaft, so that the mirror frame 55 can be supported by the rotating shaft. 531 drives and can do its own pivoting around the pivot; on the pivot joint 552, there is a ring groove 553 that provides the second end 547 of the rope loop to hang, and a relative The guide wheel 538 is used to guide the rope loop 542 (as shown in FIG. 4 ), so that when the second motor 58 rotates, the driven gear 541 and the rope loop 542 can drive the mirror frame 55 to pivot, and then drive the mirror frame 55 to rotate. The reflector 56 rotates around the pivot portion 552; in addition, two protruding stop portions 554 are separately provided on the pivot portion 552 of the mirror frame 55 to limit the rotation angle of the mirror frame 55 and the original start position, that is, when the mirror frame 55 rotates to a set angle, one of the stopping parts 554 will be blocked by the fork part 535 of the rotating shaft to form a position (as shown in FIG. 4 ).

Regarding the implementation of the present invention, please refer to Fig. 4 and Fig. 8, when the first motor 52 rotates, the driven gear 533 and the external gear 532 of the first transmission mechanism 53 drive the rotating shaft 531 to rotate, which will make the mirror frame 55 Take the reflector 56 to rotate around the light projection direction (the rotating shaft 531 is arranged in parallel with the light projection direction); and as shown in Fig. 4 and Fig. 9, when the second motor 58 rotates, through the second transmission mechanism 54 Driven by the driven gear 541 and the rope ring 542, the mirror frame 55 pivots around the pivot joint 552, and then drives the reflector 56 to rotate around a direction perpendicular to the projection of light. In this way, by controlling the rotation timing of the first motor 52 and the second motor 58, the reflection angle of the reflector 56 can be changed so that the projected light beam of the light source has the effect of changing light and shadow.

Through the structural design of the reflecting device of the present invention, in addition to enabling the reflecting mirror to rotate around two axes to change the angle of the reflected light beam, it also has the effect of smooth operation and cost reduction. In the present invention, the first transmission mechanism 53 and the second transmission mechanism 54 used to drive the reflector to rotate in different directions are independent respectively, and make the reflector 56 have a smaller rotational inertia when it rotates in direction and speed, so the second The loads of the first motor 52 and the second motor 58 are small, and the reflector can be rotated smoothly only by using low-horsepower motors, and the two motors 52, 58 are individually installed on the base 51 and the bracket 57 for positioning, that is, The second motor 52 is not driven by the first motor 52, so the first motor does not need to increase the horsepower, and the second motor will not easily loosen, which can effectively reduce the production cost of the industry.

The foregoing is an illustration of the structure of the preferred embodiment of the present invention, and various changes or modifications can be made according to the design spirit of the present invention. The direction is rotated, and the second transmission mechanism 54 for driving the mirror frame to rotate is not limited to use a rope loop, and other driving elements such as a belt can also be used. Therefore, obvious substitutions and modifications that can be made by those skilled in the art will still be incorporated within the patent scope of the present invention.

Claims (10)

1, a kind of reflection unit of stage lighting is characterized in that, comprises:

One pedestal, it can be installed in the body top of stage lighting, and the nearly centre of this pedestal has an axis hole;

One is installed in first motor on the pedestal, is equiped with gear in the rotating shaft of this first motor;

Be supported on first transmission mechanism on the pedestal pivotally, it has the rotating shaft, that can pass the pedestal axis hole and is sleeved on the driven gear of this rotating shaft by the gears engaged of the gear with external tooth of top section and one and first motor, and is formed with forked portion in the end of rotating shaft section;

One is installed in the support on the pedestal, and it has a bottom portion and a wallboard;

The one second rack-mount motor is equiped with gear in the rotating shaft of this second motor;

Second transmission mechanism, a driven gear and a fake that it has the gears engaged of one and second motor, the volume extension portion with annular groove of extending on this driven gear hangs in order to first end that fake is provided;

One mirror holder, it has one can be for the base plate and an articulated section of combination, and this articulated section is articulated in the forked portion of above-mentioned rotating shaft, and has the annular groove that hangs for fake second end on this articulated section; And

One speculum is installed on this mirror holder;

When first revolution, the driven gear of first transmission mechanism and external tooth gear can drive rotating shaft and rotate, and make the mirror holder band speculum and do rotation; When second revolution, see through the driven gear of second transmission mechanism and the articulated section pivot that fake drives mirror holder, making the mirror holder band speculum is that pivot is done at the center with its articulated section.

2, the reflection unit of stage lighting as claimed in claim 1 is characterized in that: first transmission mechanism drives speculum and does rotation around the ray cast direction.

3, the reflection unit of stage lighting as claimed in claim 1 is characterized in that: second transmission mechanism drives speculum and does rotation around the direction that is vertically intersected on ray cast.

4, the reflection unit of stage lighting as claimed in claim 1 is characterized in that: the driven gear of first transmission mechanism is one to have the belt gear with the internal tooth of external tooth gear engagement.

5, the reflection unit of stage lighting as claimed in claim 1 is characterized in that: the gear that is set in the rotating shaft has a groove, can include one in this groove in and be arranged on limited post on the pedestal in order to define the rotational angle of rotating shaft.

6, the reflection unit of stage lighting as claimed in claim 1 is characterized in that: separating on the articulated section of mirror holder turns up the soil is provided with two stopper sections of giving prominence in order to define the angle of revolution of mirror holder.

7, the reflection unit of stage lighting as claimed in claim 1 is characterized in that: the bottom portion of support is the top that covers first transmission mechanism accordingly.

8, the reflection unit of stage lighting as claimed in claim 7 is characterized in that: the bottom portion of support has axis hole.

9, the reflection unit of stage lighting as claimed in claim 1 is characterized in that: be provided with the guide wheel that can guide fake in the forked portion of rotating shaft.

10, the reflection unit of stage lighting as claimed in claim 1 is characterized in that: the driven gear of second transmission mechanism passes on the wallboard that a supporting plate is installed in support.

Images