Zoom endless rotating device for stage lamp and stage lamp

Abstract

The utility model discloses a zooming endless rotating device for stage lamps, including light source subassembly, zooming subassembly and lens subassembly, and lens subassembly includes mounting panel, lens mounting seat and first drive module, and first drive module includes first drive unit and transmission mechanism, and transmission mechanism is located at the circumference side of lens mounting seat, and is transmission connection with first drive unit and lens mounting seat, and first drive unit is arranged in parallel with transmission mechanism, and the external contour of first drive module does not exceed the external contour of mounting panel, and still have the gap between lens subassembly and zooming subassembly, and first drive module is installed in the gap, the utility model discloses the first drive module is arranged in the gap between lens subassembly and zooming subassembly, and the external edge of first drive module does not exceed the external contour of mounting panel's mode, makes the structure of zooming endless rotating device more compact, reduces the volume of zooming endless rotating device, and further improved the convenience of stage lamps installation and handling.

Description

Technical Field

[0001] This utility model belongs to the field of stage lighting, specifically relating to a zoom stepless rotation device for stage lighting fixtures and stage lighting fixtures. Background Technology

[0002] Stage lighting fixtures, as a type of lighting equipment specifically designed for stage performances, need to change lighting effects according to the content of the performance. Most existing stage lighting fixtures typically incorporate zoom components and rotatable lens assemblies to achieve this lighting transformation. However, these existing zoom components and rotatable lens assemblies are relatively large, resulting in excessively large stage lighting fixtures and increasing the difficulty of transporting and installing them.

[0003] In the prior art, such as the patent document with publication number CN220228877U, which is the applicant's earlier application, a zoom rotation mechanism and its stage light are disclosed, including a lens module, a light guide module, a lens rotation mechanism and a zoom module. By setting the zoom module and the lens rotation mechanism on the upper and lower parts, the zoom module and the lens rotation mechanism are located at the tail of the stage light. Although the radial dimension of the stage light is reduced, the axial dimension of the stage light is increased. For the entire stage light, this still results in an excessively large stage light volume, which increases the difficulty of handling and installing the stage light. Summary of the Invention

[0004] To address the problems in the existing technology, this utility model proposes a zoom stepless rotation device for stage lighting and a stage lighting fixture. By placing the first drive module in the gap between the lens assembly and the zoom assembly, and ensuring that the outer edge of the first drive module does not exceed the outer contour of the mounting plate, the structure of the zoom stepless rotation device is made more compact, reducing the volume of the zoom stepless rotation device and thus improving the convenience of stage lighting fixture installation and transportation.

[0005] This invention is implemented as follows: A stepless zoom rotating device for stage lighting includes a light source assembly, a zoom assembly, and a lens assembly arranged sequentially. The zoom assembly is mounted on the light source assembly, and the lens assembly is located on the output end of the zoom assembly. The zoom assembly reciprocates under the drive of the zoom assembly.

[0006] The lens assembly includes a mounting plate, a lens mounting base rotatably connected to the mounting plate, and a first drive module pulsatorically connected to the lens mounting base. The lens mounting base has multiple evenly arranged lens units. The first drive module includes a first drive unit and a transmission mechanism. The transmission mechanism is located on the periphery of the lens mounting base and is pulsatorically connected to both the first drive unit and the lens mounting base. The first drive unit is arranged parallel to the transmission mechanism along the circumference of the lens mounting base, and the outer contour of the first drive module does not exceed the outer contour of the mounting plate. When the outer contour of the first drive module does not exceed the outer contour of the mounting plate, the radial dimension of the lens assembly is prevented from increasing, making the structure of the zoom stepless rotation device more compact and reducing its volume. This, in turn, reduces the volume of the stage light and improves the convenience of stage lighting installation and transportation.

[0007] The lens assembly and the light source assembly form a direct or indirect sliding connection. When the lens assembly abuts against the zoom assembly under the drive of the zoom assembly, there is still a gap between the lens assembly and the light source assembly. The first drive module and the zoom assembly are both located within the gap, and one end of the transmission mechanism that is connected to the lens mounting base passes through the mounting plate from bottom to top. The zoom assembly has a clearance position adapted to the first drive module. When the lens assembly abuts against the zoom assembly, the minimum focal length and the maximum light emission angle are formed between the lens assembly and the light source assembly. At this time, the axial dimension of the first drive module coincides with the axial dimension of the zoom assembly, avoiding the first drive module increasing the axial space required for the installation of the lens assembly. This further makes the structure of the stepless zoom rotation device more compact, reduces the volume of the stepless zoom rotation device, and thus reduces the volume of the stage light, improving the convenience of stage lighting installation and transportation.

[0008] Preferably, the lens mounting base has at least three evenly distributed pulley groups on its periphery. Each pulley group includes a pulley rotatably connected to the mounting plate, and the pulley abuts against the outer periphery of the lens mounting base in a rotatable manner. When there are at least three pulley groups, the lens mounting base can rotate without a rotating shaft, making the structure of the lens assembly more compact and further reducing the volume of the lens assembly, thereby reducing the volume of the zoom stepless rotation device.

[0009] Specifically, the lens mounting base is further provided with a positioning protrusion on its outer periphery, and the pulley is provided with a positioning groove on its periphery that matches the positioning protrusion. When the pulley abuts against the outer periphery of the lens mounting base, the positioning protrusion is engaged in the positioning groove. The positioning protrusion and positioning groove are used to position the lens mounting base during installation, preventing the lens mounting base from tilting, and ensuring the reliability of the lens assembly while reducing its size.

[0010] Preferably, the lens mounting base has a first toothed portion surrounding its outer periphery; the transmission mechanism includes a transmission belt surrounding the outer periphery of the lens mounting base, the transmission belt having a second toothed portion adapted to the first toothed portion, the second toothed portion engaging with the first toothed portion. This engaging connection between the first and second toothed portions prevents slippage between the transmission belt and the lens mounting base, making the transmission connection between the transmission belt and the lens mounting base more reliable and improving the reliability of the lens assembly.

[0011] Specifically, the lens assembly further includes a tensioning mechanism comprising two parallel tensioning columns, each positioned on one side of the transmission mechanism and abutting against the transmission belt. At least one tensioning column is slidably connected to the mounting plate in a fixed manner. When the tensioning columns are positioned on both sides of an even number of transmission mechanisms, the transmission belt forms a convex shape during transmission, thereby increasing the number of teeth engaged between the first and second gear sections. This improves the transmission reliability of the first and second gear sections while reducing the load on individual teeth, thus reducing wear and extending their service life.

[0012] Preferably, the zoom assembly includes second drive units symmetrically arranged on both sides of the zoom assembly, and a guide mechanism corresponding to the second drive units. The output end of the second drive unit is connected to the lens assembly to drive the lens assembly to reciprocate. The guide mechanism includes a fixed guide sleeve, inside which a slidably connected guide rod is fitted, one end of which is connected to the lens assembly. The guide mechanism guides the lens assembly during focusing, preventing it from tilting and improving the reliability of the zoom assembly.

[0013] Specifically, the length of the guide sleeve is greater than the diameter of the guide rod, which reduces the risk of the guide rod wobbling and further improves the reliability of the zoom assembly.

[0014] Preferably, the lens mounting base includes a lens mounting base and a lens fixing cover. Multiple lens units are mounted between the lens mounting base and the lens fixing cover, with one lens unit located at the center of the lens mounting base, forming a central lens. The remaining lenses are evenly arranged around the central lens, forming multiple outer ring lenses. The lens mounting base also has a first positioning unit corresponding to the outer ring lenses. The mounting plate has a first detection unit. When the lens mounting base rotates, the first positioning unit passes through the first detection unit sequentially. The mounting plate has a second positioning unit, and the zoom stepless rotation device has a second detection unit. When the zoom assembly drives the lens assembly to reciprocate, the second positioning unit reciprocates within the detection range of the second detection unit. The first positioning unit and the first detection unit are used to detect whether the lens mounting base has rotated into place. When the first positioning unit and the first detection unit are aligned, the lens mounting base rotates into place, so that the lens assembly forms a closed-loop feedback and improves the reliability of the lens assembly. The second detection unit detects the position of the second positioning unit by means of distance measurement or sensing, and then detects the focusing distance of the zoom assembly, so that the zoom assembly forms a closed-loop feedback and improves the reliability of the zoom assembly.

[0015] Preferably, the lens assembly is further provided with a buffer mechanism, which includes a flexible buffer pad facing the zoom assembly. The buffer mechanism prevents the lens assembly from experiencing a rigid impact with the zoom assembly during zooming, thereby improving the safety of both the zoom assembly and the lens assembly.

[0016] A stage lighting fixture includes the aforementioned zoom stepless rotating device for stage lighting fixtures. By reducing the volume of the zoom stepless rotating device, the volume of the stage lighting fixture is reduced, thereby improving the convenience of installation and transportation of the stage lighting fixture.

[0017] The beneficial effects of this utility model are:

[0018] This utility model proposes a zoom stepless rotation device for stage lighting and a stage lighting fixture. By placing the first drive module in the gap between the lens assembly and the zoom assembly, and ensuring that the outer edge of the first drive module does not exceed the outer contour of the mounting plate, the internal space of the zoom stepless rotation device is fully utilized, making the structure of the zoom stepless rotation device more compact and reducing its volume, thereby improving the convenience of stage lighting fixture installation and transportation. Attached Figure Description

[0019] Figure 1 This is an exploded view of the zoom stepless rotation device of this utility model;

[0020] Figure 2 This is an exploded view of the lens assembly of the zoom stepless rotation device of this utility model.

[0021] Figure 3 for Figure 2 An enlarged schematic diagram of point a;

[0022] Figure 4 This is a schematic diagram of the zoom component of the zoom stepless rotating device of this utility model.

[0023] Figure 5 This is a schematic diagram of the mounting plate and guide rod of the zoom stepless rotation device of this utility model;

[0024] Figure 6 for Figure 5 An explosion diagram.

[0025] Figure label:

[0026] 1. Light source assembly; 2. Zoom assembly; 3. Lens assembly; 4. Second detection unit; 21. Second drive unit; 22. Guide sleeve; 23. Guide rod; 31. Mounting plate; 32. Lens mounting base; 33. First drive module; 34. Pulley block; 35. Tensioning mechanism; 36. First positioning unit; 37. Buffer mechanism; 311. First detection unit; 312. Second positioning unit; 321. Lens mounting base; 322. Lens unit; 323. Lens fixing cover; 324. Positioning protrusion; 331. First drive unit; 332. Transmission mechanism; 341. Pulley; 351. Tensioning column; 371. Flexible buffer pad; 3321. Transmission belt; 3411. Positioning groove. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] like Figures 1-6 As shown, a stepless zoom rotating device for stage lighting includes a light source assembly 1, a zoom assembly 2, and a lens assembly 3 arranged sequentially. The zoom assembly 2 is mounted on the light source assembly 1, and the lens assembly 3 is located on the output end of the zoom assembly 2, reciprocating under the drive of the zoom assembly 2.

[0030] The lens assembly 3 includes a mounting plate 31, a lens mounting base 32 rotatably connected to the mounting plate 31, and a first drive module 33 pulsatorically connected to the lens mounting base 32. The lens mounting base 32 has a plurality of evenly arranged lens units 322. The first drive module 33 includes a first drive unit 331 and a transmission mechanism 332. The transmission mechanism 332 is located on the periphery of the lens mounting base 32 and is pulsatorically connected to both the first drive unit 331 and the lens mounting base 32. The first drive unit 331 is arranged parallel to the transmission mechanism 332 along the circumference of the lens mounting base 32, and the outer contour of the first drive module 33 does not exceed the outer contour of the mounting plate 31. When the outer contour of the first drive module 33 does not exceed the outer contour of the mounting plate 31, the radial dimension of the lens assembly 3 is avoided, making the structure of the zoom stepless rotation device more compact and reducing its volume. This, in turn, reduces the volume of the stage light and improves the convenience of stage lighting installation and transportation.

[0031] Preferably, the lens mounting base 32 is provided with a first tooth that surrounds the outer periphery of the lens mounting base 32; the transmission mechanism 332 includes a transmission belt 3321 surrounding the outer periphery of the lens mounting base 32, the transmission belt 3321 being provided with a second tooth that mates with the first tooth, the second tooth engaging with the first tooth. This engaging connection between the first and second teeth prevents slippage between the transmission belt 3321 and the lens mounting base 32, making the transmission connection between the transmission belt 3321 and the lens mounting base 32 more reliable and improving the reliability of the lens assembly 3.

[0032] Specifically, the lens assembly 3 further includes a tensioning mechanism 35, which comprises two parallel tensioning posts 351. The tensioning posts 351 are respectively located on both sides of the transmission mechanism 332 and abut against the transmission belt 3321. At least one tensioning post 351 is slidably connected to the mounting plate 31 in a fixed manner. When the tensioning posts 351 are located on both sides of an even number of transmission mechanisms 332, the transmission belt 3321 forms a convex shape during transmission, thereby increasing the number of teeth meshing in the first and second gear sections. This improves the transmission reliability of the first and second gear sections while reducing the load on individual teeth, reducing wear, and extending the service life of the first and second gear sections.

[0033] In this embodiment, the lens mounting base 32 is provided with at least three evenly distributed pulley sets 34 on its periphery. Each pulley set 34 includes a pulley 341 rotatably connected to the mounting plate 31, and the pulley 341 abuts against the outer periphery of the lens mounting base 32 in a rotatable manner. When there are at least three pulley sets 34, the lens mounting base 32 can rotate without a rotating shaft, making the structure of the lens assembly 3 more compact and further reducing the volume of the lens assembly 3, thereby reducing the volume of the zoom stepless rotation device.

[0034] Specifically, the lens mounting base 32 is further provided with a positioning protrusion 324 on its outer periphery, and the pulley 341 is provided with a positioning groove 3411 on its periphery that matches the positioning protrusion 324. When the pulley 341 abuts against the outer periphery of the lens mounting base 32, the positioning protrusion 324 is engaged in the positioning groove 3411. The positioning protrusion 324 and the positioning groove 3411 are used to position the lens mounting base 32 during installation, preventing the lens mounting base 32 from tilting, and ensuring the reliability of the lens assembly 3 while reducing the volume of the lens assembly 3.

[0035] The lens assembly 3 and the light source assembly 1 form a direct or indirect sliding connection. When the lens assembly 3 abuts against the zoom assembly 2 under the drive of the zoom assembly 2, there is still a gap between the lens assembly 3 and the light source assembly 1. The first drive module 33 and the zoom assembly 2 are both located within the gap, and one end of the transmission mechanism 332, which is connected to the lens mounting base 32, passes through the mounting plate 31 from bottom to top. The zoom assembly 2 is provided with a clearance position adapted to the first drive module 33. When the lens assembly 3 abuts against the zoom assembly 2, the lens assembly 3 and the light source assembly 1 form the minimum focal length and the maximum light emission angle. At this time, the axial dimension of the first drive module 33 coincides with the axial dimension of the zoom assembly 2, avoiding the first drive module 33 from increasing the axial space required for the installation of the lens assembly 3. This further makes the structure of the stepless zoom rotation device more compact, reduces the volume of the stepless zoom rotation device, and thus reduces the volume of the stage light, improving the convenience of stage light installation and transportation.

[0036] In this embodiment, the zoom assembly 2 includes second drive units 21 symmetrically arranged on both sides of the zoom assembly 2, and a guide mechanism corresponding to the second drive units 21. The output end of the second drive units 21 is connected to the lens assembly 3 to drive the lens assembly 3 to reciprocate. The guide mechanism includes a fixed guide sleeve 22, and a slidably connected guide rod 23 is sleeved inside the guide sleeve 22. One end of the guide rod 23 is connected to the lens assembly 3. The guide mechanism is used to guide the lens assembly 3 when the zoom assembly 2 is focusing, preventing the lens assembly 3 from tilting during focusing and improving the reliability of the zoom assembly 2.

[0037] Specifically, the length of the guide sleeve 22 is greater than the diameter of the guide rod 23, which reduces the risk of the guide rod 23 wobbling and further improves the reliability of the zoom assembly 2.

[0038] In this embodiment, the lens mounting base 32 includes a lens mounting base 321 and a lens fixing cover 323. Multiple lens units 322 are mounted between the lens mounting base 321 and the lens fixing cover 323, with one lens unit 322 located at the center of the lens mounting base 321, forming a central lens. The remaining lenses are evenly arranged around the central lens, forming multiple outer ring lenses. The lens mounting base 321 is also provided with a first positioning unit 36 ​​corresponding to the outer ring lenses. The mounting plate 31 is provided with a first detection unit 311. When the lens mounting base 32 rotates, the first positioning unit 36 ​​passes through the first detection unit 311 sequentially. The mounting plate 31 is provided with a second positioning unit 312, and the zoom stepless rotation device is provided with a second detection unit 4. When the zoom assembly 2 drives the lens assembly 3 to reciprocate, the second positioning unit 312 reciprocates within the detection range of the second detection unit 4. The first positioning unit 36 ​​and the first detection unit 311 are used to detect whether the lens mounting base 32 has rotated into place. When the first positioning unit 36 ​​and the first detection unit 311 are aligned, the lens mounting base 32 rotates into place, so that the lens assembly 3 forms a closed-loop feedback, which improves the reliability of the lens assembly 3. The second detection unit 4 detects the position of the second positioning unit 312 by magnetic induction, and then detects the focusing distance of the zoom assembly 2, so that the zoom assembly 2 forms a closed-loop feedback, which improves the reliability of the zoom assembly 2.

[0039] In this embodiment, the first positioning unit 36 ​​and the second positioning unit 312 can be magnetic beads, and the first detection unit 311 and the second detection unit 4 can be Hall switches.

[0040] In this embodiment, the lens assembly 3 is further provided with a buffer mechanism 37, which includes a flexible buffer pad 371 facing the zoom assembly 2. The buffer mechanism 37 is used to prevent the lens assembly 3 from undergoing rigid impact with the zoom assembly 2 during zooming, thereby improving the safety of the zoom assembly 2 and the lens assembly 3.

[0041] Example 2

[0042] A stage lighting fixture includes a zoom stepless rotating device for stage lighting fixtures as described in Embodiment 1. By reducing the volume of the zoom stepless rotating device, the volume of the stage lighting fixture is reduced, thereby improving the convenience of installation and transportation of the stage lighting fixture.

[0043] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A stepless zoom rotating device for stage lighting, comprising a light source assembly, a zoom assembly, and a lens assembly arranged sequentially, wherein the zoom assembly is mounted on the light source assembly, and the lens assembly is disposed on the output end of the zoom assembly, and reciprocates under the drive of the zoom assembly, characterized in that: The lens assembly includes a mounting plate, a lens mounting base rotatably connected to the mounting plate, and a first drive module pulsatorically connected to the lens mounting base. The lens mounting base is provided with a plurality of evenly arranged lens units. The first drive module includes a first drive unit and a transmission mechanism. The transmission mechanism is located on the periphery of the lens mounting base and is pulsatorically connected to both the first drive unit and the lens mounting base. The first drive unit is arranged in parallel with the transmission mechanism along the circumference of the lens mounting base, and the outer contour of the first drive module does not exceed the outer contour of the mounting plate. The lens assembly and the light source assembly form a direct or indirect sliding connection. When the lens assembly abuts against the zoom assembly under the drive of the zoom assembly, there is still a gap between the lens assembly and the light source assembly. The first drive module and the zoom assembly are both located within the gap, and one end of the transmission mechanism that is connected to the lens mounting base passes through the mounting plate from bottom to top.

2. The zoom stepless rotation device for stage lighting as described in claim 1, characterized in that: The lens mounting base is provided with at least three evenly distributed pulley groups on its periphery. Each pulley group includes a pulley that is rotatably connected to the mounting plate. The pulleys abut against the outer periphery of the lens mounting base in a rotatable manner.

3. A zoom stepless rotation device for stage lighting as described in claim 2, characterized in that: The lens mounting base is also provided with a positioning protrusion on its outer periphery, and the pulley is provided with a positioning groove that matches the positioning protrusion. When the pulley abuts against the outer periphery of the lens mounting base, the positioning protrusion is engaged in the positioning groove.

4. The zoom stepless rotation device for stage lighting as described in claim 1, characterized in that: The lens mounting base is provided with a first tooth, which surrounds the outer periphery of the lens mounting base; the transmission mechanism includes a transmission belt surrounding the outer periphery of the lens mounting base, the transmission belt being provided with a second tooth adapted to the first tooth, the second tooth engaging with the first tooth.

5. A zoom stepless rotation device for stage lighting as described in claim 4, characterized in that: The lens assembly further includes a tensioning mechanism, which includes two tensioning columns arranged in parallel. The tensioning columns are respectively located on both sides of the transmission mechanism and abut against the transmission belt. At least one tensioning column is slidably connected to the mounting plate in a fixed manner.

6. A zoom stepless rotation device for stage lighting as described in claim 1, characterized in that: The zoom assembly includes a second drive unit symmetrically arranged on both sides of the zoom assembly, and a guide mechanism corresponding to the second drive unit. The output end of the second drive unit is connected to the lens assembly to drive the lens assembly to reciprocate. The guide mechanism includes a fixed guide sleeve, and a slidably connected guide rod is sleeved inside the guide sleeve. One end of the guide rod is connected to the lens assembly.

7. A zoom stepless rotation device for stage lighting as described in claim 6, characterized in that: The length of the guide sleeve is greater than the diameter of the guide rod.

8. A zoom stepless rotation device for stage lighting as described in claim 1, characterized in that: The lens mounting base includes a lens mounting base and a lens fixing cover. Multiple lens units are mounted between the lens mounting base and the lens fixing cover, with one lens unit located at the center of the lens mounting base to form a central lens. The remaining lenses are evenly arranged around the central lens to form multiple outer ring lenses. The lens mounting base is also provided with a first positioning unit corresponding to the outer ring lenses. The mounting plate is provided with a first detection unit. When the lens mounting base rotates, the first positioning unit passes through the first detection unit in sequence. The mounting plate is provided with a second positioning unit, and the zoom stepless rotation device is provided with a second detection unit. When the zoom assembly drives the lens assembly to reciprocate, the second positioning unit reciprocates within the detection range of the second detection unit.

9. A zoom stepless rotation device for stage lighting as described in claim 1, characterized in that: The lens assembly is also provided with a buffer mechanism, which includes a flexible buffer pad facing the zoom assembly.

10. A stage lighting fixture, characterized in that: Includes a zoom stepless rotation device for stage lighting as described in any one of claims 1-9.

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