Light spot shape stage lighting switching device

Abstract

The invention discloses a light spot shape stage lighting switching device which comprises a base, two lower supports fixedly connected to the side wall of the base, fixing frames fixedly connected to the upper ends of the lower supports, light spot plates fixedly connected to the inner walls of the fixing frames, upper supports fixedly connected to the upper ends of the two fixing frames and driving mechanisms arranged on the upper supports. The light shield rotates through the driving mechanism, when the rotating speed is changed, the centrifugal force is changed, the force borne by the adjusting frame is transmitted, and the angle position of the adjusting frame is also changed, so that the third lamp body is driven to generate deviation angle change, when the rotating speed of the light shield is constant, the centrifugal force is constant, the angle of the third lamp body is constant, and when the rotating speed of the light shield is changed, the angle of the third lamp body is changed. The centrifugal force is changed, the angle of the third lamp body is changed, meanwhile, the light-transmitting groove in the side wall of the light shield rotates along with the light-transmitting groove, the light-transmitting groove and the light spot plate in the fixing frame form different shielding combinations, the overlapping area of the light-transmitting groove and the light spot plate is changed, the shape of passing light spots is changed, and light rays of different colors are emitted.

Description

Technical Field

[0001] The invention belongs to the field of light switching devices, and in particular relates to a light spot shape stage light switching device. Background Art

[0002] In the field of stage lighting equipment, adjusting the shape and color of light spots through the hood structure is a common means to achieve stage lighting and shadow effects.

[0003] At present, most traditional sunshades adopt a fixed structure, or are adjusted through mechanical transmission methods such as gears and buckles. When it is necessary to switch the color of the light, an independent filter switching mechanism is often required in addition to the sunshade. The light color can be changed by replacing the filters of different colors through mechanical drive. When it is necessary to achieve the change of light spot shape and color switching at the same time, it is difficult for the existing device to achieve coordinated control of the two through the linkage structure, and it is difficult to fully utilize the light energy generated during illumination. The energy saving is insufficient and needs further improvement. Summary of the Invention

[0004] In order to overcome the problems that the existing light shield structure cannot coordinately control the change of light spot shape and color switching through the linkage structure, and that the light energy is not fully utilized and the energy saving is insufficient, a light spot shape stage lighting switching device is proposed.

[0005] The technical solution of the present invention is: a spot shape stage lighting switching device includes a base, two lower brackets fixed to the side walls of the base, a fixed frame fixed to the upper ends of the lower brackets, a spot plate fixed to the inner wall of the fixed frame, an upper bracket fixed to the upper ends of the two fixed frames, and a driving mechanism provided on the upper bracket;

[0006] A light shield is installed on the driving end of the driving mechanism, and the side wall of the light shield is penetrated by evenly distributed light-transmitting slots;

[0007] The upper end of the base is fixedly connected to a support base, one end of a first adjustment rod is hingedly connected to the side wall of the support base, an adjustment plate is hingedly connected to the upper end of the base, the other end of the first adjustment rod is hingedly connected to the end of the adjustment plate close to the support base, the middle part of the end of the adjustment plate away from the support base is fixedly connected to the first lamp body, the upper part of the end of the adjustment plate away from the support base is fixedly connected to a rubber tube, and an arc-shaped rubber block is fixedly connected between two adjacent rubber tubes;

[0008] A lighting mechanism is provided at the upper end of the support seat;

[0009] One end of a second adjustment rod is hingedly connected to the side wall of the lighting mechanism, and the other end of the second adjustment rod is hingedly connected to an adjustment frame. The adjustment frame is close to the lower part of the lighting mechanism and abuts against the side wall of the rubber tube. The inner wall of the adjustment frame is fixedly connected to the third lamp body, and the irradiation end of the lighting mechanism faces the adjustment frame.

[0010] A limiting mechanism for limiting the position of the adjustment frame is provided at the lower end of the light shield, and the limiting mechanism abuts between the adjustment frame and the light shield.

[0011] Furthermore, the limiting mechanism is composed of an inflation ring fixed to the lower end of the light shield, at least three air pipes fixed to the lower end of the inflation ring, an air bag fixed to the lower end of the air pipe, an air injection pipe fixed to the lower end of the inflation ring and an electromagnetic valve arranged on the air injection pipe. The inflation ring is a hollow annular structure, the air injection pipe and the inflation ring are connected internally, the inflation ring is connected to the air bag through the air pipe, the side wall of the air bag abuts against the inner wall of the light shield and the end of the adjustment frame away from the lamp post, and the air bag is a hollow cylindrical structure.

[0012] Furthermore, the lighting mechanism includes a supporting block fixed to the upper end of the support seat, one end of the inclined column is fixed to the upper end of the supporting block, the other end of the inclined column is fixed to the second lamp body, the upper end of the supporting block is fixed to the supporting column, and a supporting body is arranged at the center of the upper end of the supporting column. The supporting body is composed of a supporting tube fixed to the upper end of the supporting column and an aluminum tube fixed to the side wall of the supporting tube, the inner wall of the supporting tube is fixed to the lamp post, one end of the second adjusting rod is hinged to the side wall of the aluminum tube, the other end of the second adjusting rod is hinged to the end of the adjusting frame close to the lamp post, and the illuminating end of the second lamp body faces the adjusting frame.

[0013] Furthermore, the driving mechanism includes a support block fixed to the upper end of the upper bracket and a servo motor fixed to the upper end of the support block. The lower end of the output shaft of the servo motor passes through the upper bracket and is fixed to a rotating body. The lower end of the rotating body is fixed to the upper end of the light shield.

[0014] Furthermore, the center of the upper end of the upper bracket is an upwardly protruding cylindrical structure, and a dust cover is threadedly installed on the upper side wall of the cylindrical structure. The support block and the servo motor are both located inside the dust cover.

[0015] Furthermore, the inner wall of the light shield is coated with a first fluorescent layer, and the end of the adjustment frame close to the lighting mechanism is coated with a second fluorescent layer.

[0016] Furthermore, the area of ​​the light-transmitting groove is larger than the area of ​​the adjustment frame.

[0017] Furthermore, there is a gap between the upper end of the lamp post and the top surface of the inner wall of the light shield.

[0018] Furthermore, the thickness of the spot plate is one third of the thickness of the fixed frame.

[0019] Furthermore, there is a gap between the side wall of the light shield and the lower bracket, a gap between the side wall of the light shield and the fixed frame, a gap between the side wall of the light shield and the upper bracket, and a gap between the inner wall of the light shield and the outer edge of the spot plate.

[0020] Beneficial effects of the present invention:

[0021] 1. The coordinated control of the light spot shape and color can be achieved through the linkage design of the driving mechanism, the light shield, the limiting mechanism and the adjustment frame: the servo motor in the driving mechanism drives the rotating body to rotate, and then drives the light shield to rotate synchronously. At this time, the lower part of the adjustment frame tends to move away from the lighting mechanism due to the centrifugal force, and the airbag in the limiting mechanism abuts against the inner wall of the light shield and the end of the adjustment frame away from the lamp post, constraining the adjustment frame so that it can only move slightly away from the lighting mechanism. The centrifugal force generated by the driving mechanism varies with the speed of the light shield. When the speed of the light shield changes, the centrifugal force changes, and the force on the adjustment frame is transmitted. As the rotation speed of the light shield is constant, the centrifugal force is constant and the angle of the third lamp body is constant. When the rotation speed of the light shield changes, the centrifugal force changes and the angle of the third lamp body changes. At the same time, the light-transmitting grooves on the side wall of the light shield rotate with it, forming different blocking combinations with the light spot plate in the fixed frame. The overlapping area of ​​the light-transmitting grooves and the light spot plate changes, which changes the shape of the light spot passing through. In addition, the first fluorescent layer on the inner wall of the light shield presents a specific color due to the illumination. The linkage structure formed by the centrifugal force, limit constraint and force transmission solves the problem that traditional devices cannot coordinately control the switching of light spot shape and color.

[0022] 2. This device can improve the utilization rate of light, is energy-saving and environmentally friendly, and the light from the third lamp body and the lamp post can be absorbed by the first and second fluorescent layers. After power failure, the first and second fluorescent layers will produce light, which can enhance the atmosphere of the stage. In addition, when in use, multiple devices can be deployed, so that some devices can be shut down for rest time to avoid overheating. When the power is cut off for some devices, the light emitted by the fluorescent layers can enhance the stage display effect, solving the problem of insufficient light energy utilization in traditional devices.

[0023] 3. The airbag of the limit mechanism is inflated and deflated through the inflation ring, which fits tightly against the adjustment frame and the inner wall of the sunshade, thus avoiding light deviation caused by the shaking of the adjustment frame. When the adjustment frame falls back due to the slowdown of the driving mechanism, it will hit the rubber tube, which has a rebound and shock-absorbing effect, thereby improving the protection of the adjustment frame. At the same time, the angle of the adjustment plate can be manually adjusted. Since the adjustment plate is hinged to the upper end of the base, adjusting its hinge position can change the angle of the first lamp body to achieve different light path effects. The flexible connection between the rubber tube and the rubber block makes the adjustment frame smoother when fine-tuning the angle, reducing mechanical loss. The first, second and third lamp bodies can work individually or collaboratively according to the light spot requirements to avoid unnecessary energy consumption and further improve energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 Shown is a cross-sectional view of the present invention;

[0026] Figure 3 The present invention is shown Figure 2 A local enlarged schematic diagram of point A in FIG;

[0027] Figure 4 Shown is a schematic diagram of the three-dimensional structure of the inflatable ring of the present invention;

[0028] Figure 5 Shown is a cross-sectional view of the drive mechanism of the present invention;

[0029] Figure 6 Shown is a schematic diagram of the three-dimensional structure of the second lamp body of the present invention;

[0030] Figure 7 Shown is a schematic diagram of a three-dimensional cross-sectional structure of the lighting mechanism of the present invention;

[0031] Figure 8 Shown is a schematic diagram of the three-dimensional structure of the light shield of the present invention;

[0032] Figure 9 Shown is a side view of the present invention;

[0033] Figure 10 Shown is a bottom view of the present invention.

[0034] The marks in the accompanying drawings are: 1. base; 2. lower bracket; 3. fixing frame; 4. spot plate; 5. upper bracket; 6. light shield; 7. support seat; 8. first adjusting rod; 9. adjusting plate; 10. first lamp body; 11. rubber tube; 12. light-transmitting groove; 13. inflatable ring; 14. gas pipe; 15. gas injection pipe; 16. solenoid valve; 17. air bag; 18. support block; 19. servo motor; 20. rotating body; 21. dust cover; 22. bearing block; 23. inclined column; 24. second lamp body; 25. supporting column; 26. bearing body; 27. lamp column; 28. second adjusting rod; 29. ​​adjusting frame; 30. third lamp body; 601, first fluorescent layer; 2601, bearing tube; 2602, aluminum tube; 2901, second fluorescent layer. DETAILED DESCRIPTION

[0035] The present invention will be further described below with reference to the accompanying drawings and examples.

[0036] Example 1: Please refer to Figures 1-10 The light spot shape stage lighting switching device includes a base 1, two lower brackets 2 fixed to the side walls of the base 1, a fixing frame 3 fixed to the upper ends of the lower brackets 2, a light spot plate 4 fixed to the inner wall of the fixing frame 3, an upper bracket 5 fixed to the upper ends of the two fixing frames 3, and a driving mechanism provided on the upper bracket 5;

[0037] A light shield 6 is installed on the driving end of the driving mechanism, and a side wall of the light shield 6 is penetrated by light-transmitting grooves 12 evenly distributed;

[0038] The upper end of the base 1 is fixedly connected to a support base 7, one end of a first adjustment rod 8 is hingedly connected to the side wall of the support base 7, an adjustment plate 9 is hingedly connected to the upper end of the base 1, the other end of the first adjustment rod 8 is hingedly connected to the end of the adjustment plate 9 close to the support base 7, a first lamp body 10 is fixedly connected to the middle of the end of the adjustment plate 9 away from the support base 7, a rubber tube 11 is fixedly connected to the upper part of the end of the adjustment plate 9 away from the support base 7, and an arc-shaped rubber block is fixedly connected between two adjacent rubber tubes 11;

[0039] A lighting mechanism is provided at the upper end of the support seat 7;

[0040] One end of a second adjustment rod 28 is hingedly connected to the side wall of the lighting mechanism, and the other end of the second adjustment rod 28 is hingedly connected to an adjustment frame 29. The adjustment frame 29 abuts against the side wall of the rubber tube 11 near the lower part of the lighting mechanism. The third lamp body 30 is fixedly connected to the inner wall of the adjustment frame 29, and the irradiation end of the lighting mechanism faces the adjustment frame 29.

[0041] A limiting mechanism for limiting the position of the adjustment frame 29 is provided at the lower end of the light shield 6 , and the limiting mechanism abuts between the adjustment frame 29 and the light shield 6 .

[0042] When in use, the driving mechanism is turned on to rotate the light shield 6. Since the limiting mechanism abuts between the adjustment frame 29 and the light shield 6, the adjustment frame 29 will move its lower part away from the lighting mechanism due to the centrifugal force, and the adjustment frame 29 is constrained by the limiting mechanism and will only move slightly away from the lighting mechanism. Due to the different sizes of the centrifugal forces generated by the driving mechanism, the position change of the adjustment frame 29 at different angles will cause the third lamp body 30 to change in the deflection angle. Keeping the rotation speed of the light shield 6 constant will make the angle of the third lamp body 30 constant. Changing the rotation speed of the light shield 6 will make the angle of the third lamp body 30 The light from the third lamp body 30 and the lamp post 27 is emitted through the light-transmitting groove 12, penetrates the light spot plate 4 to form a light spot, and a light spot is generated and irradiated on the object to achieve a better visual effect. In addition, when the adjustment frame 29 falls back due to the slowdown in the rotation speed of the driving mechanism, it will hit the rubber tube 11. The rubber tube 11 has a rebound and shock-absorbing effect, which can improve the protection of the adjustment frame 29. In addition, when in use, the angle of the adjustment plate 9 can be manually adjusted as needed. Because the adjustment plate 9 is hinged to the upper end of the base 1, it is only necessary to adjust the position where the adjustment plate 9 is hinged to the upper end of the base 1 to change the angle of the first lamp body 10, thereby achieving different light path effects.

[0043] See also Figure 1 and Figure 3In this embodiment, the limiting mechanism is composed of an inflatable ring 13 fixed to the lower end of the light shield 6, at least three air pipes 14 fixed to the lower end of the inflatable ring 13, an air bag 17 fixed to the lower end of the air pipe 14, an air injection pipe 15 fixed to the lower end of the inflatable ring 13, and an electromagnetic valve 16 arranged on the air injection pipe 15. The inflatable ring 13 is a hollow annular structure. The air injection pipe 15 is connected to the inside of the inflatable ring 13. The inflatable ring 13 is connected to the air bag 17 through the air pipe 14. The side wall of the air bag 17 abuts against the inner wall of the light shield 6 and the end of the adjustment frame 29 away from the lamp post 27. The air bag 17 is a hollow cylindrical structure. The inflatable ring 13, the air pipe 14 The limiting mechanism composed of the airbag 17, the air injection pipe 15 and the solenoid valve 16 can, as needed, fill a specific volume of gas into the airbag 17 through the air injection pipe 15. The gas is transmitted to the airbag 17 through the inflation ring 13 and the air supply pipe 14, so that the airbag 17 can flexibly adjust the degree of expansion, accurately constrain the movement range of the adjustment frame 29, and ensure the movement stability of the adjustment frame 29. The hollow cylindrical airbag 17 is more closely abutted against the inner wall of the light shield 6 and the adjustment frame 29, and the limiting effect is more reliable. In addition, the outer wall of the cylindrical airbag 17 makes the adjustment frame 29 move along the circular surface when subjected to centrifugal force, which is conducive to the stable movement of the adjustment frame 29.

[0044] See also Figure 6 and Figure 7 In this embodiment, the lighting mechanism includes a bearing block 22 fixed to the upper end of the support seat 7, the upper end of the bearing block 22 is fixed to one end of the inclined column 23, the other end of the inclined column 23 is fixed to the second lamp body 24, the upper end of the bearing block 22 is fixed to the support column 25, and the upper end of the support column 25 is provided with a bearing body 26 in the center, the bearing body 26 is composed of a bearing tube 2601 fixed to the upper end of the support column 25 and an aluminum tube 2602 fixed to the side wall of the bearing tube 2601. The inner wall of the bearing tube 2601 is fixed to the lamp post 27, and the side wall of the aluminum tube 2602 is hinged to one end of the second adjustment rod 28, and the other end of the second adjustment rod 28 is hinged to The adjustment frame 29 is close to one end of the lamp post 27, and the illuminating end of the second lamp body 24 is facing the adjustment frame 29. The supporting block 22 provides stable support for the inclined column 23 and the support column 25; the inclined column 23 makes the second lamp body 24 at a suitable illuminating angle to ensure effective projection of light; the supporting tube 2601 on the support column 25 can firmly install the lamp post 27, and the aluminum tube 2602 is hinged to the adjustment frame 29 through the second adjustment rod 28, and can flexibly rotate with the angle change of the adjustment frame 29, ensuring smooth linkage between the lighting mechanism and the adjustment frame 29 and improving the efficiency of light utilization. In addition, the aluminum tube 2602 also helps to dissipate heat and improve the protection of the lamp post 27.

[0045] See also Figure 5In this embodiment, the driving mechanism includes a support block 18 fixed to the upper end of the upper bracket 5 and a servo motor 19 fixed to the upper end of the support block 18. The lower end of the output shaft of the servo motor 19 passes through the upper bracket 5 and is fixed to a rotating body 20. The lower end of the rotating body 20 is fixed to the upper end of the light shield 6. The support block 18 provides a stable installation base for the servo motor 19; the servo motor 19 drives the rotating body 20 to rotate through the output shaft, thereby driving the light shield 6 to rotate. The speed of the servo motor 19 is controllable and can accurately adjust the speed of the light shield 6, providing a stable power source for the angle change of the adjustment frame 29, thereby ensuring the accuracy of the light spot adjustment.

[0046] See also Figure 5 In this embodiment, the center of the upper end of the upper bracket 5 is an upwardly protruding cylindrical structure, and a dust cover 21 is threadedly installed on the side wall of the upper end of the cylindrical structure. The support block 18 and the servo motor 19 are both located inside the dust cover 21. The cylindrical structure of the upper bracket 5 facilitates the threaded installation of the dust cover 21 and is easy to assemble and disassemble; the dust cover 21 can isolate the support block 18 and the servo motor 19 from the outside world, effectively prevent dust from entering, protect the drive mechanism components, and extend their service life.

[0047] See also Figure 7 and Figure 8 In this embodiment, the area of ​​the light-transmitting groove 12 is larger than the area of ​​the adjustment frame 29. The area of ​​the light-transmitting groove 12 is larger than the area of ​​the adjustment frame 29, which can ensure that the light emitted by the third lamp body 30 in the adjustment frame 29 and the related reflected light can pass through the light-transmitting groove 12 smoothly, avoiding the light from being blocked by the light shield 6, ensuring sufficient light output, and improving the light spot display effect.

[0048] See also Figure 7 In this embodiment, there is a gap between the upper end of the lamp post 27 and the top surface of the inner wall of the light shield 6. The gap between the upper end of the lamp post 27 and the top surface of the inner wall of the light shield 6 can avoid friction and collision between the light shield 6 and the lamp post 27 when the light shield 6 rotates, ensuring the independent movement of the two and reducing mechanical wear. At the same time, it provides space for the lamp post 27 to dissipate heat, avoiding heat accumulation affecting the performance of the lamp post 27.

[0049] See also Figure 2 In this embodiment, the thickness of the spot plate 4 is one-third of the thickness of the fixed frame 3. The spot plate 4 is relatively thin. While ensuring its own structural strength and stable installation in the fixed frame 3, it can reduce the energy loss when light passes through, making it easier for light to pass through to form a clear light spot, thereby improving the utilization rate of light energy.

[0050] See also Figure 1 and Figure 2In this embodiment, there is a gap between the side wall of the light shield 6 and the lower bracket 2, there is a gap between the side wall of the light shield 6 and the fixed frame 3, and there is a gap between the side wall of the light shield 6 and the upper bracket 5. There is a gap between the inner wall of the light shield 6 and the outer edge of the light spot plate 4, and there is a gap between the light shield 6 and the lower bracket 2, the fixed frame 3, and the upper bracket 5. This can prevent the light shield 6 from contacting and rubbing with these components when rotating, eliminate motion interference, ensure smooth rotation of the light shield 6, reduce mechanical noise and wear, and extend the service life of the device.

[0051] Example 2: Please refer to Figure 7 In this embodiment, the inner wall of the light shield 6 is coated with a first fluorescent layer 601, and the end of the adjustment frame 29 close to the lighting mechanism is coated with a second fluorescent layer 2901. The first fluorescent layer 601 and the second fluorescent layer 2901 are both made of rare earth-doped silicate. The first fluorescent layer 601 on the inner wall of the light shield 6 and the second fluorescent layer 2901 on the adjustment frame 29 can absorb and utilize part of the energy in the light and emit fluorescence, which can enhance the brightness and color layering of the light and improve the visual effect of the light spot. At the same time, it can realize the secondary utilization of light energy and improve energy saving. The first fluorescent layer 601 also contains photochromic material, which appears yellow after absorbing the blue light of the lamp post 27. The speed change changes the incident angle to trigger the color switch. The absorption rate of the fluorescent layer is ≥85%, and the afterglow duration is >15 minutes.

[0052] Working Principle: When in use, you can manually adjust the position of the adjustment plate 9 hinged to the upper end of the base 1 according to the stage light path requirements. Since the adjustment plate 9 is hinged to the base 1, its angle change will drive the angle of the first lamp body 10 fixed thereon to change, initially achieving the basic light path effect;

[0053] Then, the servo motor 19 fixed to the support block 18 in the driving mechanism is turned on. The output shaft of the servo motor 19 drives the rotating body 20 and the light shield 6 fixed to the lower end of the rotating body 20 to rotate. The centrifugal force generated by the rotation of the light shield 6 acts on the adjustment frame 29. At this time, the air bag 17 connected to the air supply pipe 14 by the inflatable ring 13 in the limiting mechanism abuts against the inner wall of the light shield 6 and the end of the adjustment frame 29 away from the lamp post 27, constraining the adjustment frame 29 so that it can only move slightly away from the lighting mechanism.

[0054] When the speed of the servo motor 19 changes, the speed of the light shield 6 changes accordingly, and the centrifugal force changes synchronously. The angular position of the adjustment frame 29 changes after the force is transmitted, thereby driving the third lamp body 30 fixed to the inner wall of the adjustment frame 29 to change its deflection angle. When the speed is constant, the angle of the third lamp body 30 remains constant. When the speed changes, the angle changes accordingly. At the same time, the light emitted by the lamp post 27 in the lighting mechanism is directed toward the adjustment frame 29. After the light from the third lamp body 30 and the lamp post 27 passes through the light-transmitting groove 12 on the side wall of the light shield 6, it is illuminated by the light spot plate 4 in the fixed frame 3.

[0055] When the light shield 6 rotates, the relative position of the light-transmitting slot 12 and the light spot plate 4 changes continuously, and the overlapping area between the two changes, so that the shape of the light spot passing through changes synchronously, and the first fluorescent layer 601 on the inner wall of the light shield 6 presents a specific color when irradiated by light;

[0056] In terms of light utilization, the light from the third lamp body 30 and the lamp post 27 is absorbed and stored by the first fluorescent layer 601 and the second fluorescent layer 2901 on the adjustment frame 29. When the device is powered off, the first fluorescent layer 601 and the second fluorescent layer 2901 will release the stored energy and emit light, continuously providing soft light for the stage and enhancing the atmosphere. In actual use, multiple devices can be deployed, and by alternating activation, some devices can be disabled to rest to avoid overheating, while the fluorescent layers of the disabled devices can still emit light, which not only ensures the stage effect but also reduces energy waste and improves energy saving.

[0057] In addition, the airbag 17 of the limiting mechanism is inflated and deflated through the air injection tube 15, which can fit tightly against the inner wall of the adjustment frame 29 and the light shield 6 to prevent the adjustment frame 29 from shaking and causing light deviation. When the rotation speed of the light shield 6 slows down, the adjustment frame 29 will hit the rubber tube 11 on the adjustment plate 9 when it falls back. The rebound and shock-absorbing effect of the rubber tube 11 can protect the adjustment frame 29. At the same time, the first lamp body 10, the second lamp body 24 and the third lamp body 30 can work individually or in coordination according to the light spot requirements, reducing unnecessary energy consumption and further improving the practicality and energy saving of the device.

Claims

1. Spot shape stage lighting switching device, characterized by: The invention comprises a base (1), two lower brackets (2) fixedly connected to the side walls of the base (1), a fixed frame (3) fixedly connected to the upper ends of the lower brackets (2), a light spot plate (4) fixedly connected to the inner wall of the fixed frame (3), an upper bracket (5) fixedly connected to the upper ends of the two fixed frames (3), and a driving mechanism arranged on the upper bracket (5); A light shield (6) is installed on the driving end of the driving mechanism, and a side wall of the light shield (6) is penetrated by light-transmitting grooves (12) that are evenly distributed; The upper end of the base (1) is fixedly connected to a support base (7), one end of a first adjusting rod (8) is hingedly connected to the side wall of the support base (7), an adjusting plate (9) is hingedly connected to the upper end of the base (1), the other end of the first adjusting rod (8) is hingedly connected to an end of the adjusting plate (9) close to the support base (7), a first lamp body (10) is fixedly connected to the middle of an end of the adjusting plate (9) away from the support base (7), a rubber tube (11) is fixedly connected to the upper part of an end of the adjusting plate (9) away from the support base (7), and an arc-shaped rubber block is fixedly connected between two adjacent rubber tubes (11); A lighting mechanism is provided at the upper end of the support seat (7); One end of a second adjusting rod (28) is hingedly connected to the side wall of the lighting mechanism, and the other end of the second adjusting rod (28) is hingedly connected to an adjusting frame (29). The adjusting frame (29) is close to the lower part of the lighting mechanism and abuts against the side wall of the rubber tube (11). The inner wall of the adjusting frame (29) is fixedly connected to a third lamp body (30). The irradiation end of the lighting mechanism faces the adjusting frame (29). The lower end of the light shield (6) is provided with a limiting mechanism for limiting the position of the adjustment frame (29), and the limiting mechanism abuts between the adjustment frame (29) and the light shield (6).

2. The spot shape stage lighting switching device according to claim 1, characterized in that: The limiting mechanism is composed of an inflation ring (13) fixed to the lower end of the light shield (6), at least three air supply pipes (14) fixed to the lower end of the inflation ring (13), an air bag (17) fixed to the lower end of the air supply pipe (14), an air injection pipe (15) fixed to the lower end of the inflation ring (13), and an electromagnetic valve (16) arranged on the air injection pipe (15). The inflation ring (13) is a hollow annular structure. The air injection pipe (15) is connected to the inside of the inflation ring (13). The inflation ring (13) is connected to the air bag (17) through the air supply pipe (14). The side wall of the air bag (17) abuts against the inner wall of the light shield (6) and the end of the adjustment frame (29) away from the lamp post (27). The air bag (17) is a hollow cylindrical structure.

3. The spot shape stage lighting switching device according to claim 1, characterized in that: The lighting mechanism comprises a bearing block (22) fixedly connected to the upper end of the support seat (7), the upper end of the bearing block (22) is fixedly connected to one end of an inclined column (23), the other end of the inclined column (23) is fixedly connected to a second lamp body (24), the upper end of the bearing block (22) is fixedly connected to a support column (25), a bearing body (26) is provided at the center of the upper end of the support column (25), the bearing body (26) is composed of a bearing tube (2601) fixedly connected to the upper end of the support column (25) and an aluminum tube (2602) fixedly connected to the side wall of the bearing tube (2601), a lamp post (27) is fixedly connected to the inner wall of the bearing tube (2601), one end of a second adjusting rod (28) is hingedly connected to the side wall of the aluminum tube (2602), the other end of the second adjusting rod (28) is hingedly connected to an end of an adjusting frame (29) close to the lamp post (27), and the irradiation end of the second lamp body (24) faces the adjusting frame (29).

4. The spot shape stage lighting switching device according to claim 1, characterized in that: The driving mechanism comprises a support block (18) fixedly connected to the upper end of the upper bracket (5) and a servo motor (19) fixedly connected to the upper end of the support block (18); the lower end of the output shaft of the servo motor (19) passes through the upper bracket (5) and is fixedly connected to a rotating body (20); the lower end of the rotating body (20) is fixedly connected to the upper end of the light shield (6).

5. The spot shape stage lighting switching device according to claim 4, characterized in that: The center of the upper end of the upper bracket (5) is an upwardly protruding cylindrical structure, and the upper end side wall of the cylindrical structure is threadedly mounted with a dust cover (21), and the support block (18) and the servo motor (19) are both located inside the dust cover (21).

6. The spot shape stage lighting switching device according to claim 1, characterized in that: The inner wall of the light shield (6) is coated with a first fluorescent layer (601), and the end of the adjustment frame (29) close to the lighting mechanism is coated with a second fluorescent layer (2901).

7. The spot shape stage lighting switching device according to claim 1, characterized in that: The area of ​​the light-transmitting groove (12) is larger than the area of ​​the adjustment frame (29).

8. The spot shape stage lighting switching device according to claim 1, characterized in that: There is a gap between the upper end of the lamp post (27) and the top surface of the inner wall of the light shield (6).

9. The spot shape stage lighting switching device according to claim 1, characterized in that: The thickness of the spot plate (4) is one third of the thickness of the fixed frame (3).

10. The spot shape stage lighting switching device according to claim 1, characterized in that: There is a gap between the side wall of the light shield (6) and the lower bracket (2), a gap between the side wall of the light shield (6) and the fixed frame (3), a gap between the side wall of the light shield (6) and the upper bracket (5), and a gap between the inner wall of the light shield (6) and the outer edge of the light spot plate (4).

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