Locking device for waterproof stage lamp and stage lamp thereof

Abstract

The utility model discloses a locking device for a waterproof stage lamp and the stage lamp thereof, the locking device is arranged in a U-shaped lamp bracket, the U-shaped lamp bracket comprises two side walls, the stage lamp is arranged between the two side walls and is movably connected with the two side walls, a rotating device is arranged in the side wall on one side, and the locking device is arranged on the side where the rotating device is located; a plurality of locking holes are formed in the peripheral side of the rotating device at intervals; the locking device comprises a waterproof box, a locking shaft, a transmission shaft, a locking block and a positioning block; the locking block is arranged in the waterproof box, the transmission shaft penetrates through the locking block, extends out of the waterproof box and is movably connected with the locking shaft, and an elastic cotter pin is arranged between the locking shaft and the positioning shaft; one end of the locking shaft is movably connected with the transmission shaft, the other end of the locking shaft penetrates through the positioning block and extends towards the side where the rotating device is located, and the transmission shaft is pushed and pulled to drive the locking shaft to be inserted into or pulled out of the locking hole.

Description

Technical Field

[0001] This utility model belongs to the field of stage lighting technology, specifically relating to a locking device for a waterproof stage light and the stage light itself. Background Technology

[0002] Stage moving head lights can change their position by rotating their heads on a U-shaped bracket to meet the dynamic needs of different stage setups and scene orientations. They are widely used in various performance venues to enhance the performance atmosphere.

[0003] Existing stage lights all use the X and Y axes (to drive the U-shaped bracket to rotate around the base and to drive the lamp head to rotate around the U-shaped bracket) to drive the lamp head, allowing the lamp head to rotate freely at multiple angles. However, because the rotation of the X and Y axes is relatively flexible, the lamp body components and related parts are easily damaged during transportation and handling due to their easy rotation. In addition, in order to facilitate assembly and maintenance, a fixing and locking device is usually installed in the U-shaped bracket to limit the rotation of the lamp head.

[0004] The existing locking device is designed to be quite robust. When the locking shaft is locked by pushing or pulling the handle, too much force is required. Over time, this leads to inflexible control of the locking device and causes problems with waterproof sealing. Furthermore, due to the lack of flexibility, the locking device often rubs against the rotating pulley, resulting in poor rotation of the lamp head. Summary of the Invention

[0005] To address the problems in related technologies, this utility model proposes a locking device for waterproof stage lights and the stage light itself. By setting up two parts, a locking shaft and a transmission shaft, connected by an elastic cotter pin, the locking shaft part has a suitable lateral swing range, which facilitates the flexibility of locking the lamp head.

[0006] This utility model is implemented as follows:

[0007] A locking device for a waterproof stage light is installed inside a U-shaped light frame, the U-shaped light frame including two side walls, the stage light being installed between the two side walls and movably connected to the two side walls, and a rotating device being provided in one of the side walls, the locking device being installed on the side where the rotating device is located;

[0008] The rotating device is provided with a plurality of locking holes spaced apart on its periphery; the locking device includes a waterproof box, a locking shaft, a transmission shaft, a locking block, and a positioning block; the locking block is disposed inside the waterproof box, the transmission shaft passes through the locking block, extends to the outside of the waterproof box, and is movably connected to the locking shaft, and an elastic cotter pin is provided between the locking shaft and the positioning shaft; one end of the locking shaft is movably connected to the transmission shaft, and the other end passes through the positioning block and extends toward the side where the rotating device is located, pushing and pulling the transmission shaft, thereby driving the locking shaft to insert or withdraw from the locking hole.

[0009] Preferably, the positioning block includes a positioning plate and a longitudinal elongated hole, and the locking shaft extends through the longitudinal elongated hole toward the side where the rotating device is located.

[0010] Specifically, the locking shaft is placed inside the positioning block, and the hole inside the positioning block is a longitudinal elongated hole. When the locking shaft is inserted, it has a longitudinal adjustment range and can swing slightly in the longitudinal direction to insert into the locking hole for locking, which facilitates the flexibility of lamp head locking.

[0011] Preferably, the drive shaft is also fitted with an adjacent reciprocating oil seal and an oil seal fixing component. The reciprocating oil seal is located inside the waterproof box, and the oil seal fixing component is located outside the waterproof box, with the oil seal fixing component close to the position where the drive shaft connects to the locking shaft.

[0012] Specifically, the reciprocating oil seal is located between the locking block and the elastic cotter pin. The reciprocating oil seal is installed inside the waterproof box to ensure that the U-shaped lamp holder has waterproof sealing while the locking shaft is being inserted and removed.

[0013] Preferably, the drive shaft is provided with a first slot and a second slot, the first slot and the second slot are parallel to each other and surround the periphery of the drive shaft; the locking block is sleeved on the outside of the first slot and the second slot.

[0014] Specifically, the first slot is located between the locking shaft and the second slot, meaning the first slot is closer to the locking hole than the second slot.

[0015] Preferably, the locking block is provided with a plunger screw and a locking screw respectively. The plunger screw is inserted from the outside of the locking block and extends to engage in the first or second slot. The locking screw is inserted from the outside of the locking block and abuts against the plunger screw. The locking screw is perpendicular to the plunger screw.

[0016] Specifically, the plunger screw is a spring ball head plunger screw, and the anti-reverse screw is a plunger anti-reverse screw; the plunger anti-reverse screw prevents the spring ball head plunger screw from popping out.

[0017] In the unlocked state, the ball head of the spring-loaded plunger screw engages with the first slot, meaning the locking shaft is pulled out of the locking hole. In the locked state, the ball head of the spring-loaded plunger screw engages with the second slot, meaning the locking shaft is inserted into the locking hole. The locking mechanism of the spring-loaded plunger screw within the locking block enables the U-shaped lamp holder to be unlocked or locked, thereby controlling its rotation.

[0018] Preferably, the end of the drive shaft away from the locking shaft is provided with a mutually compatible fixing hole and fixing screw, and a handle fixing component is provided on the fixing hole. The handle fixing component is sleeved on the end of the drive shaft away from the locking shaft by the fixing screw.

[0019] Specifically, the fixing screw is inserted into the fixing hole to fix the handle fixing part to the drive shaft.

[0020] Preferably, a locking handle is connected to the handle fixing member, and a handle limiting plate is provided on the upper cover of the locking handle; the handle limiting plate is adapted to the waterproof box; a limiting hole is provided in the middle of the handle limiting plate;

[0021] The locking handle includes a fixed end and a handle end, which are parallel to each other and extend in opposite directions. A connecting part is provided between the fixed end and the handle end, and the fixed hole corresponds to the position of the connecting part. The fixed end is connected to the handle fixing part, and the handle end extends through the limiting hole to the outside of the side wall. A handle sleeve is also provided on the handle end.

[0022] Specifically, the locking handle is fixed to the handle fixing member, so that the locking handle can drive the handle fixing member to move, and the handle fixing member can then drive the transmission shaft to move, thereby enabling the transmission shaft to drive the locking shaft to insert or withdraw from the locking hole.

[0023] The handle limit plate is used to limit the movement space of the locking handle. That is, by using the handle end to pass through the limit hole, the reciprocating range of the handle end is limited, so that the handle end moves back and forth within the limit hole.

[0024] The handle sleeve makes it easy to grip and increases friction.

[0025] Preferably, the waterproof box is fixedly installed inside the side wall, and the side of the waterproof box facing the inside of the U-shaped lamp holder is provided with a waterproof box sealing ring.

[0026] Specifically, the waterproof box has a side wall cover locking sealing ring on the side facing the outside of the U-shaped lamp holder, and sealing rings are provided on both sides of the waterproof box to ensure its internal sealing.

[0027] Preferably, the rotating device includes a large rotating pulley, a transmission belt, a small rotating pulley, and a drive motor. The transmission belt is wound around the outside of the large rotating pulley and the small rotating pulley, and the drive motor is connected to the small rotating pulley. The locking device is located between the large rotating pulley and the small rotating pulley.

[0028] The inner side of the large rotating pulley is also provided with a bearing assembly, and a lamp head rotation limiting component is provided between the bearing assembly and the large rotating pulley. The bearing assembly is provided with a bearing assembly sealing ring, an oil seal, a lamp head rotating shaft, and a lamp head rotating shaft sealing ring in sequence in the direction facing the inner side of the U-shaped lamp holder. The two side walls of the U-shaped lamp holder are provided with side wall covers, and a side wall cover sealing ring is provided between the side wall cover and the U-shaped lamp holder.

[0029] Specifically, the bearing assembly includes a rotating bearing housing and a rotating bearing, and a sealing ring ensures its sealing performance. A drive motor drives a small rotating pulley to rotate, and the small rotating pulley drives a large rotating pulley to rotate via a transmission belt.

[0030] The stage lights are connected to the rotating shafts of the lamp heads on both side walls to achieve rotation. The rotating shaft seals and oil seals ensure the airtightness of the rotating shaft section. The side wall cover seals ensure the airtightness between the U-shaped lamp frame and the side walls.

[0031] The lamp head rotation limiter can control the rotation range of the lamp head.

[0032] A stage light that utilizes a locking device for a waterproof stage light as described in any of the above claims.

[0033] Compared with the prior art, the present invention achieves the following beneficial effects:

[0034] This utility model provides a locking device for a waterproof stage light and the stage light itself. The locking device is installed inside a U-shaped light frame and includes a waterproof box, a locking shaft, a transmission shaft, a locking block, and a positioning block. A flexible cotter pin is provided between the locking shaft and the transmission shaft, which, in conjunction with the locking block, controls the locking or unlocking of the structure. The flexible cotter pin connection allows the locking shaft to swing slightly laterally, and the positioning block assists in swinging slightly longitudinally, facilitating flexible locking of the light head. The waterproof box also ensures waterproof sealing; even if the light head swings or is inspected, its sealing will not be affected over time, preventing potential outdoor water leakage and malfunction. The swing adjustment space also prevents excessive force during the push-pull process after prolonged unlocking and unlocking, which could lead to operational difficulties. The locking structure of the locking block prevents improper rotation of the light head. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of a waterproof stage light according to an embodiment of the present invention;

[0036] Figure 2 This is an exploded structural diagram of a waterproof stage light according to an embodiment of the present invention;

[0037] Figure 3This is a partial structural diagram of a waterproof stage light according to an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of a locking device for a waterproof stage light according to an embodiment of the present utility model.

[0039] Figure 5 This is an exploded structural diagram of a locking device for a waterproof stage light according to an embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of the transmission shaft and locking shaft structure of a locking device for a waterproof stage light according to an embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of the positioning block structure of a locking device for a waterproof stage light in an embodiment of this utility model;

[0042] Figure 8 This is a schematic diagram of the locking handle structure of a locking device for a waterproof stage light according to an embodiment of the present invention;

[0043] Figure 9 This is a schematic diagram of the locking state of a locking device for a waterproof stage light according to an embodiment of the present invention;

[0044] Figure 10 This is a schematic diagram showing the unlocking state of a locking device for a waterproof stage light according to an embodiment of the present invention.

[0045] Figure label:

[0046] 1. U-shaped lamp holder; 11. Side wall; 12. Side wall cover; 13. Side wall cover sealing ring;

[0047] 2. Locking device; 21. Waterproof box; 211. Waterproof box sealing ring; 212. Side wall cover locking sealing ring; 213. Reciprocating oil seal; 214. Oil seal fixing component;

[0048] 22. Locking shaft; 221. Flexible cotter pin;

[0049] 23. Drive shaft; 231. First slot; 232. Second slot; 233. Fixing hole; 234. Fixing screw;

[0050] 24. Handle fixing component; 241. Locking handle; 2411. Fixing end; 2412. Handle end; 2413. Connecting part; 242. Handle sleeve; 243. Handle limiting plate; 2431. Limiting hole;

[0051] 25. Locking block; 251. Spring ball head plunger screw; 252. Plunger anti-reverse screw;

[0052] 26. Positioning block; 261. Positioning plate; 262. Longitudinal elongated hole;

[0053] 3. Rotating device; 31. Locking hole; 32. Rotating large pulley; 33. Transmission belt; 34. Rotating small pulley; 35. Drive motor; 36. Lamp head rotation limit component; 37. Bearing assembly; 371. Bearing assembly sealing ring; 38. Oil seal; 39. Lamp head rotating shaft; 391. Lamp head rotating shaft sealing ring. Detailed Implementation

[0054] 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.

[0055] Example

[0056] like Figures 1 to 10 A locking device 2 for a waterproof stage light is installed inside a U-shaped light frame 1. The U-shaped light frame 1 includes two side walls 11. The stage light is installed between the two side walls 11 and is movably connected to the two side walls 11. A rotating device 3 is provided in one side wall 11. The locking device 2 is installed on the side where the rotating device 3 is located.

[0057] The rotating device 3 has a plurality of locking holes 31 spaced apart on its periphery; the locking device 2 includes a waterproof box 21, a locking shaft 22, a transmission shaft 23, a locking block 25, and a positioning block 26; the locking block 25 is disposed inside the waterproof box 21, the transmission shaft 23 passes through the locking block 25, extends to the outside of the waterproof box 21, and is movably connected to the locking shaft 22, and an elastic cotter pin 221 is provided between the locking shaft 22 and the positioning shaft; one end of the locking shaft 22 is movably connected to the transmission shaft 23, and the other end passes through the positioning block 26 and extends toward the side where the rotating device 3 is located, pushing and pulling the transmission shaft 23, thereby driving the locking shaft 22 to insert or withdraw from the locking hole 31.

[0058] The rotating device 3 includes a large rotating pulley 32, a transmission belt 33, a small rotating pulley 34, and a drive motor 35. The transmission belt 33 is wound around the outside of the large rotating pulley 32 and the small rotating pulley 34. The drive motor 35 is connected to the small rotating pulley 34. The locking device 2 is located between the large rotating pulley 32 and the small rotating pulley 34.

[0059] The inner side of the rotating large pulley 32 is also provided with a bearing assembly 37, and a lamp head rotation limiting component 36 is also provided between the bearing assembly 37 and the rotating large pulley 32. The bearing assembly 37 is provided with a bearing assembly sealing ring 371, an oil seal 38, a lamp head rotation shaft 39, and a lamp head rotation shaft sealing ring 391 in sequence in the direction facing the inner side of the U-shaped lamp holder 1. The two side walls 11 of the U-shaped lamp holder 1 are provided with side wall covers 12, and a side wall cover sealing ring 13 is provided between the side wall cover 12 and the U-shaped lamp holder 1.

[0060] The bearing assembly 37 includes a rotating bearing housing and a rotating bearing, and the bearing assembly sealing ring 371 ensures its sealing performance. The drive motor 35 drives the rotating small pulley 34 to rotate, and the rotating small pulley 34 drives the rotating large pulley 32 to rotate through the transmission belt 33.

[0061] The stage lights are connected to the lamp head rotation shafts 39 on both side walls 11 to achieve rotation. The lamp head rotation shaft sealing ring 391 and the oil seal 38 ensure the sealing of the lamp head rotation shaft 39. The side wall cover sealing ring 13 ensures the sealing between the U-shaped lamp frame 1 and the two side walls 11.

[0062] The lamp head rotation limiter 36 can control the rotation range of the lamp head.

[0063] The positioning block 26 includes a positioning plate 261 and a longitudinal elongated hole 262, and the locking shaft 22 extends through the longitudinal elongated hole 262 toward the side where the rotating device 3 is located.

[0064] The locking shaft 22 is placed inside the positioning block 26. The positioning block 26 has a longitudinal elongated hole 262. When the locking shaft 22 is inserted, it has a longitudinal adjustment range and can swing slightly in the longitudinal direction to be inserted into the locking hole 31 for locking, which facilitates the flexibility of lamp head locking.

[0065] The drive shaft 23 is also fitted with an adjacent reciprocating oil seal 213 and an oil seal fixing member 214. The reciprocating oil seal 213 is located inside the waterproof box 21, and the oil seal fixing member 214 is located outside the waterproof box 21, and the oil seal fixing member 214 is close to the position where the drive shaft 23 connects with the locking shaft 22.

[0066] The reciprocating oil seal 213 is located between the locking block 25 and the elastic cotter pin 221. The reciprocating oil seal 213 is installed inside the waterproof box 21 to ensure that the U-shaped lamp holder 1 has waterproof sealing while the locking shaft 22 is being inserted and removed.

[0067] The drive shaft 23 is provided with a first slot 231 and a second slot 232, which are parallel to each other and surround the periphery of the drive shaft 23; the locking block 25 is sleeved on the outside of the first slot 231 and the second slot 232.

[0068] The first slot 231 is located between the locking shaft 22 and the second slot 232, that is, the first slot 231 is closer to the locking hole 31 than the second slot 232.

[0069] The locking block 25 is provided with a plunger screw and a locking screw. The plunger screw is inserted from the outside of the locking block 25 and extends to be engaged in the first slot 231 or the second slot 232. The locking screw is inserted from the outside of the locking block 25 and abuts against the plunger screw. The locking screw is perpendicular to the plunger screw.

[0070] The plunger screw is a spring ball head plunger screw 251, and the anti-reverse screw is a plunger anti-reverse screw 252; the plunger anti-reverse screw 252 prevents the spring ball head plunger screw 251 from popping out.

[0071] In the unlocked state, the ball head of the spring ball plunger screw 251 engages with the first slot 231, meaning the locking shaft 22 is pulled out of the locking hole 31. In the locked state, the ball head of the spring ball plunger screw 251 engages with the second slot 232, meaning the locking shaft 22 is inserted into the locking hole 31. The engaging structure of the spring ball plunger screw 251 within the locking block 25 enables the unlocking or locking of the U-shaped lamp holder 1, thereby controlling its rotation.

[0072] The end of the drive shaft 23 away from the locking shaft 22 is provided with a mutually compatible fixing hole 233 and fixing screw 234. The fixing hole 233 is provided with a handle fixing member 24. The handle fixing member 24 is sleeved on the end of the drive shaft 23 away from the locking shaft 22 by fixing screw 234.

[0073] The fixing screw 234 is inserted into the fixing hole 233, thereby fixing the handle fixing piece 24 onto the drive shaft 23.

[0074] A locking handle 241 is connected to the handle fixing member 24, and a handle limiting plate 243 is provided on the top cover of the locking handle 241; the handle limiting plate 243 is adapted to the waterproof box 21; a limiting hole 2431 is provided in the middle of the handle limiting plate 243.

[0075] The locking handle 241 includes a fixed end 2411 and a handle end 2412, which are parallel to each other and extend in opposite directions. A connecting part 2413 is provided between the fixed end 2411 and the handle end 2412, and the fixed hole 233 corresponds to the position of the connecting part 2413. The fixed end 2411 is connected to the handle fixing member 24, and the handle end 2412 extends through the limiting hole 2431 to the outside of the side wall 11. A handle sleeve 242 is also provided on the handle end 2412.

[0076] The locking handle 241 is fixed to the handle fixing member 24, so that the locking handle 241 can drive the handle fixing member 24 to move, and the handle fixing member 24 can drive the transmission shaft 23 to move, so that the transmission shaft 23 drives the locking shaft 22 to insert or withdraw from the locking hole 31.

[0077] The handle limiting plate 243 is used to limit the movement space of the locking handle 241. That is, the handle end 2412 passes through the limiting hole 2431 to limit the reciprocating movement range of the handle end 2412, so that the handle end 2412 reciprocates within the limiting hole 2431.

[0078] The handle sleeve 242 makes it easy to grip and increases friction.

[0079] The waterproof box 21 is fixedly installed inside the side wall 11, and the waterproof box 21 is provided with a waterproof box sealing ring 211 on the side of the waterproof box 21 facing the inside of the U-shaped lamp holder 1.

[0080] The waterproof box 21 has a side wall cover locking sealing ring 212 on the side facing the outside of the U-shaped lamp holder 1. Both sides of the waterproof box 21 are provided with sealing rings to ensure its internal sealing.

[0081] A stage light that uses a locking device 2 for waterproof stage lights as described above.

[0082] This utility model provides a locking device 2 for a waterproof stage light and the stage light thereon. By manually moving the locking handle 241, the locking handle 241 drives the transmission shaft 23 to move. The transmission shaft 23 drives the locking shaft 22 to insert or withdraw from the locking hole 31, thereby realizing the locking and unlocking of the lamp.

[0083] When the ball head of the spring ball head plunger screw 251 is engaged in the first slot 231, that is, the locking shaft 22 is pulled out of the locking hole 31, the unlocking is achieved; when the ball head of the spring ball head plunger screw 251 is engaged in the second slot 232, that is, the locking shaft 22 is inserted into the locking hole 31, the locking is achieved.

[0084] 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 locking device for a waterproof stage light, disposed within a U-shaped light frame, the U-shaped light frame comprising two side walls, the stage light being disposed between the two side walls and movably connected to the two side walls, wherein a rotating device is provided within one side wall, and the locking device is disposed on the side where the rotating device is located; characterized in that, The rotating device is provided with a plurality of locking holes spaced apart on its periphery; the locking device includes a waterproof box, a locking shaft, a transmission shaft, a locking block, and a positioning block; the locking block is disposed inside the waterproof box, the transmission shaft passes through the locking block, extends to the outside of the waterproof box, and is movably connected to the locking shaft, and an elastic cotter pin is provided between the locking shaft and the positioning shaft; one end of the locking shaft is movably connected to the transmission shaft, and the other end passes through the positioning block and extends toward the side where the rotating device is located, pushing and pulling the transmission shaft, thereby driving the locking shaft to insert or withdraw from the locking hole.

2. The locking device for a waterproof stage light according to claim 1, characterized in that, The positioning block includes a positioning plate and a longitudinal elongated hole, and the locking shaft extends through the longitudinal elongated hole toward the side where the rotating device is located.

3. A locking device for a waterproof stage light according to claim 1, characterized in that, The drive shaft is also fitted with an adjacent reciprocating oil seal and an oil seal fixing component. The reciprocating oil seal is located inside the waterproof box, and the oil seal fixing component is located outside the waterproof box, with the oil seal fixing component close to the position where the drive shaft connects to the locking shaft.

4. A locking device for a waterproof stage light according to claim 1, characterized in that, The drive shaft is provided with a first slot and a second slot, which are parallel to each other and surround the circumference of the drive shaft; the locking block is sleeved on the outside of the first slot and the second slot.

5. A locking device for a waterproof stage light according to claim 4, characterized in that, The locking block is provided with a plunger screw and a locking screw. The plunger screw is inserted from the outside of the locking block and extends to engage in the first or second slot. The locking screw is inserted from the outside of the locking block and abuts against the plunger screw. The locking screw is perpendicular to the plunger screw.

6. A locking device for a waterproof stage light according to claim 1, characterized in that, The end of the drive shaft away from the locking shaft is provided with a corresponding fixing hole and fixing screw. The fixing hole is provided with a handle fixing part, and the handle fixing part is sleeved on the end of the drive shaft away from the locking shaft by fixing screw.

7. A locking device for a waterproof stage light according to claim 6, characterized in that, A locking handle is connected to the handle fixing component, and a handle limiting plate is provided on the top cover of the locking handle; the handle limiting plate is adapted to the waterproof box; a limiting hole is provided in the middle of the handle limiting plate; the locking handle includes a fixed end and a handle end, the fixed end and the handle end are parallel to each other and extend in opposite directions, a connecting part is provided between the fixed end and the handle end, and the fixed hole corresponds to the position of the connecting part; the fixed end is connected to the handle fixing component, the handle end extends through the limiting hole to the outside of the side wall, and a handle sleeve is also provided on the handle end.

8. A locking device for a waterproof stage light according to claim 1, characterized in that, The waterproof box is fixedly installed inside the side wall, and a waterproof box sealing ring is provided on the side of the waterproof box facing the inside of the U-shaped lamp holder.

9. A locking device for a waterproof stage light according to claim 1, characterized in that, The rotating device includes a large rotating pulley, a transmission belt, a small rotating pulley, and a drive motor. The transmission belt is wound around the outside of the large rotating pulley and the small rotating pulley, and the drive motor is connected to the small rotating pulley. The locking device is located between the large rotating pulley and the small rotating pulley. A bearing assembly is also provided on the inner side of the large rotating pulley, and a lamp head rotation limiting component is provided between the bearing assembly and the large rotating pulley. The bearing assembly is provided with a bearing assembly sealing ring, an oil seal, a lamp head rotating shaft, and a lamp head rotating shaft sealing ring in sequence facing the inner side of the U-shaped lamp holder. Side wall covers are provided on both sides of the U-shaped lamp holder, and side wall cover sealing rings are provided between the side wall covers and the U-shaped lamp holder.

10. A stage light, characterized in that, A locking device for a waterproof stage light as described in any one of claims 1 to 9 is applied.

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