Theater lamp focusing self-locking structure

Abstract

The utility model relates to the technical field of stage lamps, in particular to a theater lamp focusing self-locking structure. The motor is connected with the worm and the worm gear to drive the first gear, then the first gear is matched with the belt and the second gear to enable the light source to move, the worm and the worm gear have the self-locking function and the transmission function, and the light source cannot slide down at any angle during power failure.

Description

Technical Field

[0001] This utility model relates to the field of stage lighting technology, and in particular to a self-locking focusing structure for theater lights. Background Technology

[0002] Theaters are venues specifically designed for performing plays, dramas, operas, dances, folk arts, music, and other cultural and entertainment activities. Lighting in a theater can enhance the atmosphere. Older theater lights typically used lead screw drives, spur gear drives, or bevel gear drives for focusing. However, this method has a drawback: when the power is off, if the light source is pointing vertically downwards at an angle greater than 45 degrees, it will slide downwards. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a self-locking focusing structure for theater lights, which mainly solves the problems mentioned in the background technology.

[0004] This utility model proposes a self-locking focusing structure for a theater lamp. The self-locking focusing structure is disposed in the lamp housing, which has a receiving cavity. A motor is fixed in the receiving cavity. The output shaft of the motor is fixedly connected to a worm gear. The worm gear meshes with a worm wheel. One end of the worm gear's central shaft is connected to a first fixed seat via a bearing. The other end of the worm gear's central shaft passes through a bearing of a second fixed seat and is fixedly connected to a first gear. The first gear meshes with a belt. The belt also meshes with a second gear, and the second gear is connected to a third fixed seat via a bearing. The first, second, and third fixed seats are respectively fixed in the receiving cavity. A bracket is fixed to the belt, and the bracket is fixedly connected to the light source.

[0005] A further improvement is that the bracket includes a connecting frame and an auxiliary frame. One end of the auxiliary frame is fixedly connected to the belt, and the side of the auxiliary frame away from the belt is fixedly connected to the connecting frame. The bottom of the connecting frame is slidably connected to the guide rail, and the guide rail is fixed in the receiving cavity.

[0006] A further improvement is that the number of guide rails is two, and the two guide rails are spaced apart.

[0007] A further improvement is that one side of the connecting bracket is fixedly connected to the light source, and the other side of the connecting bracket is fixedly connected to the heat sink.

[0008] A further improvement is that the connecting frame is made of metal.

[0009] A further improvement is that the receiving cavity is fixed with a partition, which divides the receiving cavity into a first cavity and a second cavity. The motor is located in the first cavity, and the output shaft of the motor passes through the partition and is fixedly connected to the worm gear, which is located in the second cavity.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This invention connects a motor to a worm gear, which drives a first gear, and then works with a belt and a second gear to enable the light source to move. The worm gear and worm wheel have a self-locking transmission function, so the light source will not slide down at any angle when the power is off. Attached Figure Description

[0012] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the present invention. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0013] Figure 1 This is a schematic diagram of the present invention installed behind the lamp housing;

[0014] Figure 2 This is a schematic diagram of the connection of this utility model;

[0015] Figure 3 This is a schematic diagram of the connection of the bracket of this utility model;

[0016] in:

[0017] 1. Lamp housing; 200. Light source; 300. Heat sink;

[0018] 401. Motor; 402. Worm; 403. Worm wheel; 404. Belt; 405. First gear; 406. Second gear; 407. First fixed seat; 408. Second fixed seat; 409. Third fixed seat; 410. Guide rail; 411. Connecting frame; 412. Auxiliary frame. Detailed Implementation

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can be described as the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] Reference Figure 1-3In one embodiment, a self-locking focusing structure for a theater lamp is provided. The self-locking focusing structure includes a motor 401, a worm gear 402, a worm wheel 403, a belt 404, a first gear 405, a second gear 406, a first fixed seat 407, a second fixed seat 408, a third fixed seat 409, and a bracket. The lamp housing 1 has a receiving cavity, in which the motor 401 is fixedly mounted. The output shaft of the motor 401 is fixedly connected to the worm gear 402, and the worm gear 402 meshes with the worm wheel 403. The central shaft of the worm gear 402... The worm gear 402 is connected to the first fixed seat 407 via a bearing. The other end of the worm gear 402's central shaft passes through the bearing of the second fixed seat 408 and is fixedly connected to the first gear 405. The first gear 405 meshes with the belt 404, which also meshes with the second gear 406. The second gear 406 is connected to the third fixed seat 409 via a bearing. The first fixed seat 407, the second fixed seat 408, and the third fixed seat 409 are respectively fixed in the receiving cavity. The belt 404 is fixed with a bracket, which is fixedly connected to the light source 200, which is an LED lamp. In this embodiment, the motor 401 is connected to the worm gear 402, and the worm wheel 403 drives the first gear 405. This, in conjunction with the belt 404 and the second gear 406, allows the light source 200 to move. The worm gear 402 and worm wheel 403 have a self-locking transmission function, so the light source 200 will not slide down at any angle when the power is off.

[0021] In one embodiment, the self-locking focusing structure of the theater lamp also includes a guide rail 410. Since the light source 200 is generally large in size, in order to improve the stability during focusing, the bracket includes a connecting frame 411 and an auxiliary frame 412. One end of the auxiliary frame 412 is fixedly connected to the belt 404, and the side of the auxiliary frame 412 away from the belt 404 is fixedly connected to the connecting frame 411. The bottom of the connecting frame 411 is slidably connected to the guide rail 410, and the guide rail 410 is fixed in the receiving cavity.

[0022] Furthermore, there are two guide rails 410, which are spaced apart to make focusing more stable and smoother.

[0023] In one embodiment, one side of the connecting frame 411 is fixedly connected to the light source 200, and the other side of the connecting frame 411 is fixedly connected to the heat sink 300. The connecting frame 411 simultaneously fixes the light source 200 and the heat sink 300, shortening the distance between the light source 200 and the heat sink 300, accelerating the heat dissipation efficiency, and reducing the impact of heat on the accuracy of the worm gear 403, worm 402, first toothed belt 404, and second gear 406.

[0024] Furthermore, the connecting bracket 411 is made of metal, such as copper or aluminum, to accelerate heat conduction.

[0025] In one embodiment, a partition is fixed to the receiving cavity, which divides the receiving cavity into a first cavity and a second cavity. The motor 401 is located in the first cavity, and the output shaft of the motor 401 passes through the partition and is fixedly connected to the worm gear 402, which is located in the second cavity. Since both the motor 401 and the light source 200 generate heat, this arrangement can reduce the heat generated by the motor 401 from being conducted into the second cavity.

[0026] The positional relationships described in the figures are for illustrative purposes only and should not be construed as limiting the present invention. Clearly, the above embodiments of the present invention are merely examples to clearly illustrate the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A self-locking focusing structure for a theater lamp, wherein the self-locking focusing structure for a theater lamp is disposed in the lamp housing (1), characterized in that, The lamp housing (1) is provided with a receiving cavity, in which a motor (401) is fixed. The output shaft of the motor (401) is fixedly connected to a worm (402). The worm (402) meshes with a worm wheel (403). One end of the central shaft of the worm (402) is connected to a first fixed seat (407) through a bearing. The other end of the central shaft of the worm (402) passes through the bearing of a second fixed seat (408) and is fixedly connected to a first gear (405). The first gear (405) meshes with a belt (404). The belt (404) also meshes with a second gear (406), and the second gear (406) is connected to a third fixed seat (409) through a bearing. The first fixed seat (407), the second fixed seat (408), and the third fixed seat (409) are respectively fixed in the receiving cavity. The belt (404) is fixed with a bracket, and the bracket is fixedly connected to the light source (200).

2. The self-locking focusing structure for theater lights according to claim 1, characterized in that, The bracket includes a connecting frame (411) and an auxiliary frame (412). One end of the auxiliary frame (412) is fixedly connected to the belt (404). The side of the auxiliary frame (412) away from the belt (404) is fixedly connected to the connecting frame (411). The bottom of the connecting frame (411) is slidably connected to the guide rail (410), and the guide rail (410) is fixed in the receiving cavity.

3. The self-locking focusing structure for theater lights according to claim 2, characterized in that, The number of guide rails (410) is two, and the two guide rails (410) are arranged at intervals.

4. The self-locking focusing structure for theater lights according to claim 2, characterized in that, One side of the connecting bracket (411) is fixedly connected to the light source (200), and the other side of the connecting bracket (411) is fixedly connected to the heat sink (300).

5. The self-locking focusing structure for theater lights according to claim 4, characterized in that, The connecting frame (411) is made of metal.

6. The self-locking focusing structure for theater lights according to any one of claims 1 to 5, characterized in that, The receiving cavity is fixed with a partition, which divides the receiving cavity into a first cavity and a second cavity. The motor (401) is located in the first cavity. The output shaft of the motor (401) passes through the partition and is fixedly connected to the worm (402), and the worm (402) is located in the second cavity.

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