Focusing device of stage lamp

Abstract

The focusing device comprises a base, a light source module and a lens module, the light source module is fixedly arranged at the upper end of the base, and the lens module is located above the light source module and corresponds to the light source module so that light of the light source module can penetrate through the lens module to be emitted out. The base is provided with a transmission mechanism used for adjusting the distance between the light source module and the lens module, the transmission mechanism comprises a driving assembly, a guide column, a guide sleeve and a synchronous belt, the guide sleeve is in sliding connection with the guide column, the guide sleeve is fixedly arranged on the base, one end of the guide column is fixedly connected with the synchronous belt, and the other end of the guide column is fixedly connected with the lens module. The driving assembly drives the synchronous belt to move and drives the guide column to move relative to the guide sleeve at the same time, then the lens module is driven to move, and compared with a lead screw motor transmission mode in the prior art, the transmission mechanism is high in adjusting speed and low in production cost.

Description

Technical Field

[0001] The present invention relates to the technical field of stage light illumination, and particularly to a focusing device for a stage light. Background Art

[0002] The focusing mechanism of a stage light can adjust parameters such as the angle, brightness, or color temperature of the light to obtain the best lighting effect. Generally, the focusing mechanism includes a lens module, a light source module, and a lead screw motor. The light source module corresponds to the lens module, so that the light of the light source module passes through the lens module and emits. The lens module is connected to the lead screw motor and is driven by the motor to adjust the distance between the lens module and the light source module, thereby achieving the required lighting effect. The defect brought by the way of the lead screw motor adjusting the focal length is that the adjusting speed is slow. Compared with ordinary motors, the cost of the lead screw motor is high, which is not conducive to market competition.

[0003] In addition, another focusing transmission method of the focusing mechanism is to include a guide rod, a guide sleeve, a first transmission gear, a second transmission gear, a motor, and a transmission belt. The first transmission gear and the second transmission gear are arranged at intervals, and both ends of the transmission belt are respectively sleeved on the first transmission gear and the second transmission gear to achieve synchronous transmission; the guide sleeve is sleeved on the guide rod and moves along the length direction of the guide rod. The guide sleeve is respectively connected to the lens module and the transmission belt. While the motor drives the transmission belt to move, the guide sleeve and the lens module can be linked to move, thereby realizing the lens focusing function. The defects brought by this focusing transmission method are as follows: Since both ends of the guide rod need to be fixed by fixing seats, the effective moving range of the sliding sleeve on the sliding rod is limited. In order to ensure that the sliding sleeve can move within the effective range, the length of the guide rod has to be extended, but this results in an increase in the volume of the stage light. Summary of the Invention

[0004] The present invention provides a focusing device for a stage light to solve one of the above technical problems, which has the advantages of fast transmission speed, low production cost, and being more miniaturized.

[0005] To solve the above technical problems, the present invention provides the following technical solutions:

[0006] A focusing device for a stage light comprises a base, a light source module and a lens module, wherein the light source module is fixedly arranged at the upper end of the base, and the lens module is located above and corresponding to the light source module, so that the light of the light source module is emitted through the lens module, and the base is provided with a transmission mechanism for adjusting the distance between the light source module and the lens module, and the transmission mechanism comprises a driving assembly, a guide column, a guide sleeve and a synchronous belt, the guide sleeve is slidably connected to the guide column, the guide sleeve is fixedly arranged on the base, one end of the guide column is fixedly connected to the synchronous belt, and the other end of the guide column is fixedly connected to the lens module, and the driving assembly drives the synchronous belt to move while linking the guide column to move relative to the guide sleeve, thereby driving the lens module to move.

[0007] As a preferred embodiment, it is further defined that the guide sleeve includes a guide sleeve body and a guide sleeve seat fixedly connected to the outer periphery of the guide sleeve body, the guide sleeve seat is fixedly connected to the upper end face or the lower end face of the base, and the guide sleeve body is inserted through the base.

[0008] As a preferred embodiment, it is further defined that the drive assembly includes a drive motor, a first transmission wheel and a second transmission wheel, the first transmission wheel rotates synchronously with the output shaft of the drive motor, the drive motor is fixedly arranged on the lower end surface of the base, and the lower end surface of the base is also fixedly provided with two connecting columns extending downward, a connecting piece is connected between the two connecting columns, the second transmission wheel is fixedly arranged on the connecting piece, and the first transmission wheel and the second transmission wheel are synchronously linked through the synchronous belt.

[0009] As a preferred embodiment, it is further defined that the connecting member is provided with a strip hole, the strip hole is penetrated by an adjusting column, and the adjusting column can be adjusted up and down along the length direction of the strip hole, and the adjusting column is fixedly connected to the rotating shaft of the second transmission wheel after passing through the strip hole.

[0010] As a preferred embodiment, it is further defined that the lower end surface of the base is sealedly connected to a waterproof cover for arranging the drive component cover therein.

[0011] As a preferred implementation, it is further defined that the light source module includes a plurality of LED lamp beads and light guide columns corresponding to the plurality of LED lamp beads one by one.

[0012] As a preferred embodiment, it is further defined that the lens module includes a lens seat and a plurality of lenses arranged on the lens seat, and the lenses are located above the light guide column and correspond to the light guide column one by one.

[0013] As a preferred embodiment, it is further defined that the transmission mechanism is provided with at least two groups.

[0014] After adopting the above technical solution, the invention at least has the following beneficial effects:

[0015] 1. The invention can quickly adjust the focal length of the stage light through the synchronous belt drive. Compared with the existing screw motor drive method, the drive mechanism of the invention not only has a fast adjustment speed but also a low production cost.

[0016] 2. The synchronous belt is linked with the guide post. Without increasing the length of the guide post, the effective moving range of the guide post can be effectively increased, which is beneficial to reducing the overall volume of the lamp and making it more miniaturized. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an exploded view of the head of the stage light;

[0018] Figure 2 is a schematic diagram of the transmission structure;

[0019] Figure 3 is a schematic diagram of the cooperation between the adjusting post and the strip hole;

[0020] Figure 4 is a structural diagram of the guide sleeve. DETAILED DESCRIPTION OF THE INVENTION

[0021] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following further describes the application in detail with reference to the drawings and specific embodiments.

[0022] In the description of the invention, it should be understood that if terms such as "center", "middle part", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the invention.

[0023] As shown in the attached Figure 1 to the attached Figure 4As shown in the figure, the present invention discloses a focusing device for a stage light, which includes a base 1, a light source module 2 and a lens module 3. The light source module 2 is fixedly arranged at the upper end of the base 1, and the lens module 3 is located above the light source module 2 and corresponds to it, so that the light of the light source module 2 passes through the lens module 3 and emits. The base 1 is provided with a transmission mechanism 4 for adjusting the distance between the light source module 2 and the lens module 3. The transmission mechanism 4 includes a driving component 41, a guide post 42, a guide sleeve 43 and a synchronous belt 44. The guide sleeve 43 is slidably connected with the guide post 42. The guide sleeve 43 is fixedly arranged on the base 1. One end of the guide post 42 is fixedly connected with the synchronous belt 44, and the other end of the guide post 42 is fixedly connected with the lens module 3. When the driving component 41 drives the synchronous belt 44 to move, it simultaneously drives the guide post 42 to move relative to the guide sleeve 43, thereby driving the lens module 3 to move. The present invention can quickly adjust the focal length of the stage light by means of synchronous belt 44 transmission. Compared with the existing screw motor transmission method, the transmission mechanism 4 of the present invention not only has a fast adjustment speed but also has a low production cost.

[0024] In addition, the synchronous belt 44 is linked with the guide post 42. Without extending the length of the guide post, the effective moving range of the guide post 42 can be effectively increased, thereby reducing the overall volume of the lamp and making it more miniaturized.

[0025] As shown in the attached Figure 2 and attached Figure 4 As shown in the figure, the guide sleeve 43 includes a guide sleeve main body 431 and a guide sleeve seat 432 fixedly connected to the outer periphery of the guide sleeve main body 431. The guide sleeve seat 432 is fixedly connected to the upper end face or the lower end face of the base 1. The guide sleeve main body 431 passes through the base 1, and the guide sleeve main body 431 sleevs the guide post 42, so that the guide post 42 can pass through the base during the up and down sliding process to drive the lens module. In this way, the structure of the lamp is more compact, and the volume of the lamp is further reduced.

[0026] As shown in the attached Figure 2 As shown in the figure, the driving component 41 includes a driving motor 411, a first transmission wheel 412 and a second transmission wheel 413. The first transmission wheel 412 rotates synchronously with the output shaft of the driving motor 411. The driving motor 411 is fixedly arranged on the lower end face of the base 1. Two connecting columns 414 extending downward are also fixedly arranged on the lower end face of the base 1. A connecting piece 415 is connected between the two connecting columns 414. The second transmission wheel 413 is fixedly arranged on the connecting piece 415. The first transmission wheel 412 and the second transmission wheel 413 are synchronously linked through the synchronous belt 44 to realize the automatic control of the synchronous belt 44.

[0027] As shown in the attached Figure 3As shown, the connecting member 415 is provided with a strip-shaped hole 416, through which an adjusting column 417 is inserted. The adjusting column 417 can be adjusted up and down along the length direction of the strip-shaped hole 416. After passing through the strip-shaped hole 416, the adjusting column 417 is fixedly connected to the rotating shaft of the second transmission wheel 413. This strip-shaped hole 416 can conveniently adjust the distance between the first transmission wheel 412 and the second transmission wheel 413, thereby adjusting the tightness of the synchronous belt 44 and ensuring the effective mechanical movement between various components.

[0028] As shown in the Figure 1 attached figure, a waterproof cover 5 for covering the driving assembly 41 inside is hermetically connected to the lower end surface of the base 1, preventing the driving assembly 41 from short-circuiting due to moisture, which is beneficial to extending the service life of the lamp.

[0029] As shown in the Figure 1 attached figure, the light source module 2 includes a plurality of LED lamp beads 21 and light guide columns 22 corresponding to the plurality of LED lamp beads 21 one by one. The lens module 3 includes a lens seat 31 and a plurality of lenses 32 arranged on the lens seat 31. The lenses 32 are located above the light guide columns 22 and correspond to the light guide columns 22 one by one, which is beneficial to ensuring the effective output of the light and shadow effect.

[0030] As shown in the Figure 1 attached figure, at least two sets of transmission mechanisms 4 are provided. Preferably, each set of transmission mechanisms 4 includes two guide sleeves 43 and two guide posts 42 that cooperate with each other, thereby increasing the stability of the mechanical movement of the transmission mechanism 4.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various equivalent changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalent scope.

Claims

1. A focusing device for a stage light, comprising a base (1), a light source module (2) and a lens module (3). The light source module (2) is fixedly arranged at the upper end of the base (1). The lens module (3) is located above and corresponding to the light source module (2), so that the light of the light source module (2) is emitted through the lens module (3). The base (1) is provided with a transmission mechanism (4) for adjusting the distance between the light source module (2) and the lens module (3). The transmission mechanism (4) includes a driving component (41), a guide post (42), a guide sleeve (43) and a synchronous belt (44). The guide sleeve (43) is slidably connected with the guide post (42). It is characterized in that, The guide sleeve (43) is fixedly arranged on the base (1), one end of the guide column (42) is fixedly connected to the synchronous belt (44), and the other end of the guide column (42) is fixedly connected to the lens module (3), and the driving component (41) drives the synchronous belt (44) to move and simultaneously links the guide column (42) to move relative to the guide sleeve (43), thereby driving the lens module (3) to move.

2. The focusing device according to claim 1, wherein The guide sleeve (43) comprises a guide sleeve body (431) and a guide sleeve seat (432) fixedly connected to the outer periphery of the guide sleeve body (431); the guide sleeve seat (432) is fixedly connected to the upper end surface or the lower end surface of the base (1); and the guide sleeve body (431) is inserted through the base (1).

3. The focusing device according to claim 1, characterized in that, The driving assembly (41) comprises a driving motor (411), a first transmission wheel (412) and a second transmission wheel (413); the first transmission wheel (412) rotates synchronously with the output shaft of the driving motor (411); the driving motor (411) is fixedly arranged on the lower end surface of the base (1); two connecting columns (414) extending downward are also fixedly arranged on the lower end surface of the base (1); a connecting piece (415) is connected between the two connecting columns (414); the second transmission wheel (413) is fixedly arranged on the connecting piece (415); the first transmission wheel (412) and the second transmission wheel (413) are synchronously linked via the synchronous belt (44).

4. The focusing device according to claim 3, characterized in that, The connecting member (415) is provided with a strip hole (416), and an adjustment column (417) is passed through the strip hole (416). The adjustment column (417) can be adjusted up and down along the length direction of the strip hole (416). After passing through the strip hole (416), the adjustment column (417) is fixedly connected to the rotating shaft of the second transmission wheel (413).

5. The focusing device according to claim 1, wherein The lower end surface of the base (1) is sealingly connected to a waterproof cover (5) for covering the drive assembly (41) therein.

6. The focusing device according to claim 1, wherein The light source module (2) comprises a plurality of LED lamp beads (21) and light guide columns (22) corresponding one-to-one to the plurality of LED lamp beads (21).

7. The focusing device according to claim 6, wherein, The lens module (3) comprises a lens seat (31) and a plurality of lenses (32) arranged on the lens seat (31); the lenses (32) are located above the light guide columns (22) and correspond one-to-one with the light guide columns (22).

8. The focusing device according to any one of claims 1 to 7, characterized in that, The transmission mechanism (4) is provided with at least two groups.

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