A method for controlling color of stage lighting

Abstract

The present invention discloses a method for controlling the color of stage lighting, and relates to the technical field of lighting control. The method comprises the following steps: Step S1: installing a lighting device at a target location; Step S2: installing a suitable prism in the light path of the lighting device; Step S3: controlling the near and far motion of the prism to adjust the color range of the lighting; Step S4: controlling the deflection motion of the prism to further change the color range; and Step S5: controlling the movement speed and rest position of the prism to achieve multi-form control of the color of the stage lighting at the target location. The method provides flexible and variable color control, and the lighting device is compact, easy to install, and has low manufacturing costs. It achieves precise control of light color changes and is suitable for low-cost, small-space stage plays and concert halls.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting control, and in particular to a method for controlling the color of stage lighting. Background Art

[0002] Early theatrical performances were performed outdoors or semi-outdoor, all using daylight as the light source. As performance venues gradually shifted from outdoor to indoor locations, and to meet the needs of nighttime performances, stage lighting technology emerged. Stage lighting can enhance the effects of stage performances and enhance the atmosphere. With the development of technology, stage lighting technology is constantly innovating and advancing. From the original oil lamps and gas lamps to modern LED lights and laser lights, stage lighting has not only become brighter and more energy-efficient, but also capable of achieving more complex and diverse lighting effects.

[0003] At present, large-scale stage lighting devices in the existing technology have powerful performance and high lighting complexity, but are not suitable for use on small stages or concert halls. Such stage devices are often complex in structure, have high processing and manufacturing costs, are large in size, difficult to install, and require complex electronic control design combined with precise mechanical design. The use of complete systems is expensive. In demonstrations on some small stages and small concert halls, the budget for ordering stage lights is often limited. The overall functionality of the lights is relatively simple, and they can only achieve simple switching, brightness adjustment, and simple color changing effects, but cannot produce diverse color effects, which makes the on-site atmosphere low. In addition, the stage lighting control often lacks precision and cannot meet the needs of complex lighting effects. In view of the shortcomings of the existing technology, the present invention provides a method for controlling the color of stage lights to solve the above problems. Summary of the Invention

[0004] In response to the deficiencies in the prior art, the present invention provides a method for controlling the color of stage lights. The color control is flexible and changeable. By controlling the far and near movement and deflection movement of the prism, as well as the movement speed and the stop position, the color range of the lights can be precisely controlled to produce a variety of lighting effects, thus meeting the requirements of stage performances for a diversity of light colors. At the same time, the lighting device has a compact structure, is easy to install, and has low processing and manufacturing costs. The control unit of the lighting device is reasonably designed, the lighting device is simple to operate and easy to control, and the control logic of the entire lighting device is clear. Through the cooperation of the control unit and the deflection unit, precise control of the light color change can be achieved. The lighting device is suitable for use in low-cost, small-space stage plays and concert halls, thus meeting the requirements of use.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a method for controlling the color of stage lighting, the method comprising the following steps: step S1: installing a lighting device at a target position;

[0006] Step S2: Installing a suitable polygonal prism on the light path of the lighting device;

[0007] Step S3: Control the near and far motion of the prism to adjust the light color range;

[0008] Step S4: controlling the deflection motion state of the polygonal mirror to further produce a change in the color range;

[0009] Step S5: Controlling the movement speed and the stop position of the multi-prism to achieve multi-form color change control of the stage lighting device at the target position;

[0010] When the above steps are used to control the light color, a lighting device is also specifically involved. The lighting device includes an assembly positioning bracket and an inner carrier arranged on the assembly positioning bracket. The inner carrier is provided with a light main unit, and the light main unit is provided with a light head.

[0011] The inner carrier is connected to a positioning lampshade, a movable lampshade is sleeved on the positioning lampshade, a sleeve is rotatably connected to the movable lampshade, and a multi-prism is movably clamped on the sleeve;

[0012] The inner carrier is provided with a control unit for driving the movable lampshade to move, and the movable lampshade is provided with a deflection unit for driving the sleeve to move. The deflection unit includes a transmission gear arranged on the sleeve and a base arranged on the positioning lampshade, and the base is provided with a rack engaged with the transmission gear.

[0013] Preferably, the control unit includes a fixed shaft fixedly connected to the movable lampshade and a connecting rod sleeved on the fixed shaft, the connecting rod is rotatably connected to an eccentric shaft at one end away from the fixed shaft, a turntable is fixedly connected to the eccentric shaft, and a driving component for driving the turntable to rotate is provided on the inner carrier.

[0014] Preferably, the drive assembly includes a drive motor fixedly connected to the inner carrier and a worm fixedly connected to the output end of the drive motor. A worm wheel is rotatably connected to the inner carrier, the worm wheel is engaged with the worm, and the rotating shaft of the worm wheel is fixedly connected to the eccentric shaft.

[0015] Preferably, an embedding groove is provided inside the sleeve, an insert block is fixedly connected to the polygonal prism, the insert block is movably inserted in the embedding groove, and a locking assembly for locking the position of the insert block is provided on the sleeve.

[0016] Preferably, the locking assembly includes a limiting groove provided on the sleeve, a rotating rod is rotatably connected inside the limiting groove, a locking head is provided on the rotating rod, a spring is fixedly connected between the rotating rod and the limiting groove, a locking groove is provided on the insert block, and the locking head is movably engaged in the locking groove.

[0017] Preferably, a square notch is provided at the bottom of the movable lampshade, and a cover is movably connected to the square notch.

[0018] Preferably, the positioning lampshade is provided with a lower groove and an upper groove.

[0019] Preferably, a slide groove is provided on the positioning lampshade, and a drag reduction wheel is provided inside the movable lampshade, and the drag reduction wheel is arranged in the slide groove.

[0020] Preferably, the light head is movably plugged into the interior of the positioning lampshade, and the movable lampshade is provided with a flared lightshade.

[0021] Preferably, the movable lampshade is provided with a shaft seat, and the sleeve is rotatably connected in the shaft seat.

[0022] The present invention discloses a method for controlling the color of stage lighting, which has the following beneficial effects:

[0023] 1. The method for controlling the color of stage lighting is flexible and changeable. By controlling the distance movement and deflection movement of the prism, as well as the movement speed and the stop position, the color range of the lighting can be precisely controlled to produce a variety of lighting effects, thus meeting the demand for diverse lighting colors in stage performances. At the same time, the lighting device has a compact structure, is easy to install, and has low processing and manufacturing costs. The control unit of the lighting device is reasonably designed, and the lighting device is easy to operate and control. The control logic of the entire lighting device is clear. Through the cooperation of the control unit and the deflection unit, precise control of the light color change can be achieved. The method is suitable for low-cost, small-space stage plays and concert halls, and meets the use requirements.

[0024] 2. The method for controlling the color of stage lighting facilitates quick installation and disassembly of the prism through the design of embedded slots and plug-in blocks, so that the prism can be easily replaced later. Different prisms have different light divergence effects. Therefore, the prism is easy to replace, making it easy to further adjust the projection effect of the stage lighting to meet different stage needs.

[0025] 3. The method for controlling the color of stage lighting adopts a mechanical structure for controlling the color of lighting. The structural design has a sufficient safety factor and good durability, ensuring the stability of the overall control process, and can flexibly adjust the position and angle of the prism, so that the lighting range, dispersion angle and light transmittance of the lamp can be adjusted. Among them, the control unit has a compact structure and stable operation. The control unit is convenient for driving the movable lampshade to move, and the movement of the movable lampshade is used to drive the prism to move, so that the distance between the prism and the light head changes, and the light path and dispersion effect are adjusted. At the same time, when the control unit drives the movable lampshade to move, it synchronously drives the deflection unit to operate, and uses the deflection unit to drive the prism to deflect, thereby realizing a large range of dispersion transformation and multi-type light projection transformation effects, enhancing the on-site stage lighting atmosphere to meet the needs of different performance scenes. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a schematic diagram of the operation of the overall method of the present invention;

[0028] Figure 2 This is a first perspective diagram of the overall lighting device of the present invention;

[0029] Figure 3 This is a second viewing angle of the overall schematic diagram of the lighting device of the present invention;

[0030] Figure 4 It is a cross-sectional view of the overall structure of the present invention;

[0031] Figure 5 Schematic diagram of the structure of the control unit of the present invention;

[0032] Figure 6 Schematic diagram of the structure of the deflection unit of the present invention;

[0033] Figure 7 It is a structural schematic diagram of the square notch of the present invention;

[0034] Figure 8 Schematic diagram of the structure of the cover of the present invention;

[0035] Figure 9 It is a structural schematic diagram of the chute of the present invention;

[0036] Figure 10 For the present invention Figure 9 Enlarged view of part A;

[0037] Figure 11 This is a schematic structural diagram of the positioning lampshade of the present invention;

[0038] Figure 12 This is a disassembly diagram of the polygonal prism of the present invention;

[0039] Figure 13 It is a structural schematic diagram of the locking assembly of the present invention.

[0040] In the figure: 1. Assembly positioning bracket; 11. Inner bearing frame; 2. Lighting main unit; 21. Lighting head; 3. Positioning lampshade; 31. Slide groove; 32. Upper groove; 33. Lower groove; 4. Movable lampshade; 41. Expanded lampshade; 42. Shaft seat; 43. Square notch; 44. Cover; 45. Drag reduction wheel; 5. Sleeve; 51. Embedded groove; 6. Prism; 61. Insert block; 62. Locking groove; 7. Control unit; 71. Fixed shaft; 72. Connecting rod; 73. Eccentric shaft; 74. Turntable; 75. Drive assembly; 751. Drive motor; 752. Worm; 753. Worm gear; 8. Deflection unit; 81. Transmission gear; 82. Base; 83. Rack; 9. Locking assembly; 91. Limiting groove; 92. Turning rod; 93. Locking head; 94. Spring. DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0042] The embodiments of the present application provide a method for controlling the color of stage lighting, thereby resolving the problem that large-scale stage lighting devices in the prior art have powerful performance and high lighting complexity, but are not suitable for use on small stages or concert halls. Such stage devices are often complex in structure, have high processing and manufacturing costs, are large in size, difficult to install, require complex electronic control designs combined with precise mechanical designs, and are expensive to use as a complete system. In some small stages and small concert halls, presentations are limited in budget and are not convenient to use, while low-cost equipment cannot meet the requirements for complex lighting effects.

[0043] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0044] The embodiment of the present invention discloses a method for controlling the color of stage lighting. Figure 1-13 As shown, the control method includes the following steps: Step S1: installing the lighting device at the target position;

[0045] Step S2: Installing a suitable polygonal mirror 6 on the light path of the lighting device;

[0046] Step S3: Control the near and far motion of the prism 6 to adjust the light color range;

[0047] Step S4: controlling the deflection motion of the polygonal mirror 6 to further produce a change in the color range;

[0048] Step S5: controlling the movement speed and the stop position of the polygonal mirror 6 to achieve multi-form color change control of the stage lighting device at the target position;

[0049] When the above steps are used to control the light color, a lighting device is also specifically involved. The lighting device includes an assembly positioning bracket 1 and an inner carrier 11 provided on the assembly positioning bracket 1. The inner carrier 11 is provided with a light host 2, and the light host 2 is provided with a light head 21.

[0050] The inner carrier 11 is connected to a positioning lampshade 3, a movable lampshade 4 is sleeved on the positioning lampshade 3, a sleeve 5 is rotatably connected to the movable lampshade 4, and a multi-prism 6 is movably clamped on the sleeve 5;

[0051] The inner carrier frame 11 is provided with a control unit 7 for driving the movable lampshade 4 to move, and the movable lampshade 4 is provided with a deflection unit 8 for driving the sleeve 5 to move. The deflection unit 8 includes a transmission gear 81 arranged on the sleeve 5 and a base 82 arranged on the positioning lampshade 3. The base 82 is provided with a rack 83 engaged with the transmission gear 81.

[0052] This method for controlling the color of stage lighting adopts a mechanical structure for controlling the color of lighting. The structural design has a sufficient safety factor and good durability, ensuring the stability of the overall control process. In addition, the position and angle of the prism 6 can be flexibly adjusted, thereby adjusting the lighting range, dispersion angle and light transmittance of the lamp to meet the needs of different performance scenes.

[0053] The control unit 7 includes a fixed shaft 71 fixedly connected to the movable lampshade 4 and a connecting rod 72 sleeved on the fixed shaft 71. The connecting rod 72 is rotatably connected to an eccentric shaft 73 at one end away from the fixed shaft 71. A turntable 74 is fixedly connected to the eccentric shaft 73. A driving assembly 75 for driving the turntable 74 to rotate is provided on the inner carrier 11. The driving assembly 75 includes a driving motor 751 fixedly connected to the inner carrier 11 and a worm 752 fixedly connected to the output end of the driving motor 751. A worm gear 753 is rotatably connected to the inner carrier 11, the worm gear 753 meshes with the worm 752, and the rotating shaft of the worm gear 753 is fixedly connected to the eccentric shaft 73.

[0054] The control unit 7 in the device has a compact structure and stable operation. The control unit 7 is convenient for driving the movable lampshade 4 to move, and the movement of the movable lampshade 4 is used to drive the prism 6 to move, so that the distance between the prism 6 and the light head 21 changes, and the light path and dispersion effect are adjusted. At the same time, when the control unit 7 drives the movable lampshade 4 to move, it synchronously drives the deflection unit 8 to operate, and uses the deflection unit 8 to drive the prism 6 to deflect, thereby realizing a large range of dispersion transformation and multi-type light projection transformation effects, thereby enhancing the on-site stage lighting atmosphere.

[0055] The control unit 7 uses a drive assembly 75 to provide power. When the drive motor 751 is working, it drives the worm 752 to rotate, the worm 752 drives the worm gear 753 to rotate, the worm gear 753 drives the turntable 74 to move, the turntable 74 drives the eccentric shaft 73 to move, the eccentric shaft 73 drives the connecting rod 72 to move, the connecting rod 72 drives the fixed shaft 71 to move, the fixed shaft 71 drives the movable lampshade 4 to move, and the movable lampshade 4 drives the sleeve 5 and the polygonal mirror 6 to move as a whole, thereby adjusting the distance between the polygonal mirror 6 and the light head 21, thereby adjusting the scattering of the light and changing the size of the light spot.

[0056] At the same time, when the movable lampshade 4 moves, the movable lampshade 4 synchronously drives the sleeve 5 and the transmission gear 81 to move. Since the transmission gear 81 and the rack 83 are engaged, and the rack 83 is in a stationary state, the transmission gear 81 rotates, and the transmission gear 81 drives the sleeve 5 to rotate, and the sleeve 5 drives the prism 6 to rotate, thereby realizing the self-rotation of the prism 6. When the prism 6 rotates, the refractive index of the prism 6 changes. Different refractive indices will also bring different colors to the light. In turn, the self-rotation of the prism 6 deflects and dynamically scatters the light emitted by the light head 21.

[0057] An embedding groove 51 is provided inside the sleeve 5, and an insert block 61 is fixedly connected to the prism 6. The insert block 61 is movably inserted in the embedding groove 51. A locking component 9 for locking the position of the insert block 61 is provided on the sleeve 5. The design of the embedding groove 51 and the insert block 61 makes it easy to quickly install and disassemble the prism 6, so that the prism 6 can be easily replaced later. Different prisms 6 have different light divergence effects. Therefore, the prism 6 is easy to replace, so that the projection effect of the stage light is easy to be further adjusted, thereby meeting different stage requirements.

[0058] The locking assembly 9 includes a limiting groove 91 formed on the sleeve 5. A rotating rod 92 is rotatably connected to the limiting groove 91. The rotating rod 92 is provided with a locking head 93. A spring 94 is fixedly connected between the rotating rod 92 and the limiting groove 91. The insert 61 is provided with a locking groove 62. The locking head 93 is movably engaged in the locking groove 62.

[0059] The locking assembly 9 has a simple structure and is easy to operate. When the prism 6 needs to be installed, the rotating rod 92 is first pressed to make the rotating rod 92 rotate and drive the locking head 93 to tilt up. At the same time, the rotating rod 92 squeezes the spring 94. At this time, the insert block 61 is aligned with the inside of the embedding groove 51 and inserted. When the insert block 61 is fully inserted into the embedding groove 51, the rotating rod 92 is released. The spring 94 resets and pushes the rotating rod 92 to rotate, so that the rotating rod 92 drives the locking head 93 to move. The locking head 93 is clamped in the inside of the locking groove 62, thereby realizing rapid fixation of the insert block 61 and the prism 6.

[0060] A square slot 43 is provided at the bottom of the movable lampshade 4, and a cover 44 is movably connected to the square slot 43. The design of the square slot 43 and the cover 44 facilitates the rapid installation of the prism 6, so that the prism 6 and the insert 61 pass through the movable lampshade 4 and enter the bottom of the sleeve 5 during installation, and the cover 44 facilitates the sealing of the square slot 43.

[0061] The positioning lampshade 3 is provided with a lower groove 33 and an upper groove 32 . The lower groove 33 is designed so that the positioning lampshade 3 does not block the other notch 43 , and the upper groove 32 is designed so that the positioning lampshade 3 does not collide with the sleeve 5 .

[0062] A slide groove 31 is provided on the positioning lampshade 3, and a drag reduction wheel 45 is provided inside the movable lampshade 4. The drag reduction wheel 45 is arranged in the slide groove 31. Through the design of the drag reduction wheel 45 and the slide groove 31, when relative movement occurs between the movable lampshade 4 and the positioning lampshade 3, the resistance and wear of the movable lampshade 4 and the positioning lampshade 3 are small, thereby improving the stability and service life of the lighting device.

[0063] The light head 21 is movably inserted into the interior of the positioning lampshade 3. The movable lampshade 4 is provided with an expanded light cover 41. The device limits the lighting range through the expanded light cover 41 to provide different stage lighting effects.

[0064] The movable lampshade 4 is provided with a shaft seat 42 , and the sleeve 5 is rotatably connected in the shaft seat 42 . The shaft seat 42 is provided to provide lateral support for the sleeve 5 , thereby ensuring that the sleeve 5 is subjected to stable force.

[0065] In summary, the method for controlling the color of stage lighting of the present invention has the following advantages: first, the color control is flexible and varied. By controlling the distance movement and deflection movement of the polygonal prism 6, as well as the movement speed and the stop position, the color range of the lighting can be precisely controlled to produce a variety of lighting effects, thereby meeting the demand for diverse lighting colors in stage performances;

[0066] Second, the lighting device has a compact structure and is easy to install. The lighting device adopts the design of the assembly positioning bracket 1 and the inner bearing frame 11, which has a compact structure and is easy to install and disassemble. At the same time, the installation method of the movable lampshade and the prism is also convenient for replacement and maintenance.

[0067] Third, the lighting device control unit 7 is rationally designed. Through the combination of the drive motor 751, the worm 752 and the worm gear 753, the movable lampshade 4 and the prism 6 are precisely controlled. This design not only has high transmission efficiency but also can achieve smooth rotation and reduce noise and vibration.

[0068] Fourthly, the polygonal mirror 6 is easy to install. The sleeve 5 is provided with an embedding groove 51 and a locking assembly 9, which facilitates the installation and fixation of the polygonal mirror 6 and ensures the stability of the polygonal mirror 6 during the rotation process.

[0069] Fifth, the lighting device is easy to operate and control. The control logic of the entire lighting device is clear. Through the cooperation of the control unit 7 and the deflection unit 8, precise control of the light color change is achieved, and the operation is simple and easy.

[0070] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0071] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for controlling the color of stage lighting, characterized in that: The control method comprises the following steps: Step S1: installing the lighting device at a target position; Step S2: Installing a suitable polygonal mirror (6) in the light path of the lighting device; Step S3: Control the near and far motion state of the prism (6) to adjust the color range of the light; Step S4: controlling the deflection motion state of the polygonal mirror (6) to further produce a change in the color range; Step S5: controlling the movement speed and the stop position of the multi-prism (6) to achieve multi-form color change control of the stage lighting device at the target position; When the above steps are used to control the light color, a lighting device is also specifically involved. The lighting device includes a general assembly positioning bracket (1) and an inner carrier (11) arranged on the general assembly positioning bracket (1). A lighting main unit (2) is arranged on the inner carrier (11), and a light head (21) is arranged on the lighting main unit (2). The inner carrier (11) is connected to a positioning lampshade (3), a movable lampshade (4) is sleeved on the positioning lampshade (3), a sleeve (5) is rotatably connected to the movable lampshade (4), and a prism (6) is movably clamped on the sleeve (5); The inner carrier (11) is provided with a control unit (7) for driving the movable lampshade (4) to move, and the movable lampshade (4) is provided with a deflection unit (8) for driving the sleeve (5) to move, and the deflection unit (8) includes a transmission gear (81) provided on the sleeve (5) and a base (82) provided on the positioning lampshade (3), and the base (82) is provided with a rack (83) meshing with the transmission gear (81); The control unit (7) comprises a fixed shaft (71) fixedly connected to the movable lampshade (4) and a connecting rod (72) sleeved on the fixed shaft (71); the connecting rod (72) is rotatably connected to an eccentric shaft (73) at one end away from the fixed shaft (71); a turntable (74) is fixedly connected to the eccentric shaft (73); and a driving assembly (75) for driving the turntable (74) to rotate is provided on the inner carrier (11); The driving assembly (75) includes a driving motor (751) fixedly connected to the inner carrier (11) and a worm (752) fixedly connected to the output end of the driving motor (751); a worm wheel (753) is rotatably connected to the inner carrier (11); the worm wheel (753) is meshed with the worm (752); and the rotating shaft of the worm wheel (753) is fixedly connected to the eccentric shaft (73).

2. A method for controlling the color of stage lighting according to claim 1, characterized in that: An embedding groove (51) is provided inside the sleeve (5), an inserting block (61) is fixedly connected to the polygonal mirror (6), and the inserting block (61) is movably inserted into the embedding groove (51). A locking assembly (9) for locking the position of the inserting block (61) is provided on the sleeve (5).

3. A method for controlling the color of stage lighting according to claim 2, characterized in that: The locking assembly (9) includes a limiting groove (91) provided on the sleeve (5), a rotating rod (92) is rotatably connected inside the limiting groove (91), a locking head (93) is provided on the rotating rod (92), a spring (94) is fixedly connected between the rotating rod (92) and the limiting groove (91), a locking groove (62) is provided on the insert block (61), and the locking head (93) is movably engaged in the locking groove (62).

4. A method for controlling the color of stage lighting according to claim 3, characterized in that: A square notch (43) is provided at the bottom of the movable lampshade (4), and a sealing cover (44) is movably clamped on the square notch (43).

5. A method for controlling the color of stage lighting according to claim 4, characterized in that: The positioning lampshade (3) is provided with a lower groove (33) and an upper groove (32).

6. A method for controlling the color of stage lighting according to claim 5, characterized in that: A sliding groove (31) is provided on the positioning lampshade (3), and a drag reduction wheel (45) is provided inside the movable lampshade (4), and the drag reduction wheel (45) is arranged in the sliding groove (31).

7. The method for controlling the color of stage lighting according to claim 1, wherein: The light head (21) is movably plugged into the interior of the positioning lampshade (3), and the movable lampshade (4) is provided with an expanded lightshade (41).

8. The method for controlling the color of stage lighting according to claim 1, wherein: The movable lampshade (4) is provided with an axle seat (42), and the sleeve seat (5) is rotatably connected in the axle seat (42).

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