A luminaire

Abstract

The application relates to the technical field of lamp dismounting, and provides a lamp, which is characterized in that, during installation, a first convex piece passes through a first letting-hole, a second convex piece passes through a second letting-hole, a driving part is driven to rotate to drive a first limiting surface to rotate to be directly below the first convex piece and drive a second limiting surface to rotate to be directly below the second convex piece, so that the lens is installed and limited in an installation cavity; during dismounting, the driving part is driven to rotate to drive the first letting-hole to rotate to be directly below the first convex piece and drive the second letting-hole to rotate to be directly below the second convex piece, and the lens is separated from the heat dissipation main body by pulling the lens in the up-down direction. In actual use, various lenses with different angles need to be replaced to match the lenses with different angles in different use places, so as to improve the lighting effect of the lamp; the driving part is moved to drive the lens to rotate, so that the lens can be fixed or separated from the heat dissipation main body, the lens dismounting efficiency is improved, and the lamp is convenient to use.

Description

Technical Field

[0001] This invention relates to the field of lamp assembly and disassembly technology, and specifically to a lamp. Background Technology

[0002] High bay lights are suitable for lighting in large and spacious places such as factories, power plants, steel mills, workshops, warehouses, stadiums, waiting rooms, stations, gas stations, airports, shopping malls, and supermarkets.

[0003] Currently, the shape of high bay lights is generally a long cylindrical shape or a disc shape. High bay lights of this shape usually have the power supply installed in the upper half and the lens installed in the lower half. The assembly structure is relatively complicated and it is not easy to produce high efficiency. Disc-shaped high bay lights integrate the light source directly into the light shield housing. The installation technology requirements are higher and the assembly operation is inconvenient.

[0004] Therefore, a type of lighting fixture that allows for the installation or removal of the light engine assembly without tools has emerged on the market. For example, Chinese invention patent CN215863108U, published on February 18, 2022, entitled "An LED High Bay Light," uses a screw-on and lamp body clip connection to allow for the removal of the light engine assembly. Maintenance and replacement of the light engine assembly are achieved by rotating the cover counterclockwise. However, this structure uses a locking screw passing through a screw hole on the lens to lock it to the mounting plate. When installing or removing the lens, a drive rod is often needed to unscrew the lens from the mounting plate, making the process cumbersome and inefficient when changing lenses of different angles. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a lamp that can replace lenses of different angles and can efficiently disassemble and assemble lenses.

[0006] To address the above problems, the present invention provides the following technical solution:

[0007] A lighting fixture includes a heat dissipation body and a lens assembly covering one side of the heat dissipation body. The heat dissipation body includes a heat dissipation main plate and a heat dissipation sub-plate mounted at the center of the heat dissipation main plate. The heat dissipation body is recessed downward to form a mounting cavity, which is located between the heat dissipation main plate and the heat dissipation sub-plate.

[0008] The mounting cavity includes an inner cavity wall near the heat dissipation sub-plate and an outer cavity wall away from the heat dissipation sub-plate. The outer cavity wall is provided with a first protrusion facing the inner cavity wall, and the inner cavity wall is provided with a second protrusion facing the outer cavity wall. The first protrusion and the second protrusion are both spaced apart from the bottom wall of the mounting cavity in the vertical direction.

[0009] The lens assembly includes a lens and a driving part disposed on the lens;

[0010] The lens is recessed with a first limiting structure and a second limiting structure, the first limiting structure corresponding to the first protrusion and the second limiting structure corresponding to the second protrusion;

[0011] The first limiting structure includes a first clearance hole disposed on the outer periphery of the lens and a first limiting surface arcuately disposed on one side of the first clearance hole; the second limiting structure includes a second clearance hole disposed on the inner periphery of the lens and a second limiting surface arcuately disposed on one side of the second clearance hole.

[0012] During installation, the first protrusion passes through the first clearance hole, and the second protrusion passes through the second clearance hole, driving the driving part to rotate so that the first limiting surface rotates to directly below the first protrusion and the second limiting surface rotates to directly below the second protrusion, thereby limiting the lens installation in the mounting cavity;

[0013] During disassembly, the drive unit is driven to rotate so that the first clearance hole rotates to the position directly below the first protrusion and the second clearance hole rotates to the position directly below the second protrusion. The lens is then pulled in the vertical direction to separate it from the heat dissipation body.

[0014] In one embodiment, the first limiting surface includes a first engaging surface that engages with the first protrusion and a first guide surface that connects the first engaging surface and the first clearance hole;

[0015] The second limiting surface is disposed on both sides of the second clearance hole and engages with the second protrusion accordingly;

[0016] The height of the end of the first guide surface connected to the first clearance hole gradually increases toward the end of the first guide surface connected to the first engagement surface;

[0017] During installation, the first protrusion passes through the first clearance hole, and the second protrusion passes through the second clearance hole, driving the driving part to rotate so that the first protrusion moves along the first guide surface to directly above the first engagement surface; and so that the second protrusion moves to directly above the end of the second limiting surface away from the second clearance hole;

[0018] During disassembly, the drive unit is driven to rotate so that the first protrusion moves along the first guide surface to directly above the first clearance hole, and the second protrusion moves along the second limiting surface to directly above the second clearance hole. The lens is then pulled in the up-down direction to separate the lens from the heat dissipation body.

[0019] In one embodiment, the first protrusion and the second protrusion have the same thickness;

[0020] The thickness of the first protrusion is between 1 / 2 and 2 / 3 of the thickness of the lens.

[0021] In one embodiment, the second limiting surface gradually slopes upward from the side closest to the second clearance hole toward the side furthest from the second clearance hole.

[0022] In one embodiment, the tilt angle of the second limiting surface is between 1 / 3 and 1 / 4 of the tilt angle of the first guide surface.

[0023] In one embodiment, the length of the first protrusion is between 1 / 2 and 2 / 3 of the length of the first engaging surface, and the length of the second protrusion is between 1 / 3 and 1 / 4 of the length of the second limiting surface.

[0024] In one embodiment, both the first protrusion and the second protrusion are provided in multiples, with the multiple first protrusions evenly distributed on the outer cavity wall of the mounting cavity and the multiple second protrusions evenly distributed on the inner cavity wall of the mounting cavity;

[0025] The number of the first protrusion is greater than the number of the second protrusion.

[0026] In one embodiment, the heat dissipation motherboard has a first opening, and the driving part has a groove on the side opposite to the first protrusion. The driving part can be moved by passing through the first opening and inserting into the groove through a driving rod.

[0027] The opening angle of the first opening is the same as the rotation angle of the drive unit;

[0028] The opening angle of the first opening is set between 10° and 15°.

[0029] In one embodiment, the lamp further includes a lamp plate installed in the mounting cavity, the lamp plate being attached to the cavity wall of the mounting cavity, and the lens covering the lamp plate and connected to the heat dissipation body;

[0030] The bottom wall of the mounting cavity is provided with a first machining hole facing the first protrusion, and the bottom wall of the mounting cavity is provided with a second machining hole facing the second protrusion;

[0031] The lamp also includes a first sealing ring and a second sealing ring installed in the mounting cavity. The first sealing ring is installed between the lens and the heat dissipation main plate, and the second sealing ring is installed between the lens and the heat dissipation subplate.

[0032] In one embodiment, both the inner and outer walls of the mounting cavity are spaced apart from the lens.

[0033] The beneficial effects of this invention are as follows: When the lens needs to be installed on the heat dissipation body, the first protrusion passes through the first clearance hole, and the second protrusion passes through the second clearance hole. The driving part is rotated to rotate the first limiting surface to directly below the first protrusion and the second limiting surface to directly below the second protrusion, thereby limiting the lens installation in the mounting cavity. When the lens needs to be removed from the heat dissipation body, the driving part is rotated to rotate the first clearance hole to directly below the first protrusion and the second clearance hole to directly below the second protrusion. The lens is then pulled up and down to separate it from the heat dissipation body. In the actual use of the lamp, it is necessary to replace lenses with different angles to match different angle lenses in different usage locations to improve the lighting effect of the lamp. This invention moves the driving part to rotate the lens, so that the lens can be fixed or separated from the heat dissipation body, improving the lens installation and removal efficiency and facilitating use. Attached Figure Description

[0034] Figure 1 This is a perspective view of one embodiment of a lamp according to the present invention;

[0035] Figure 2 This is a schematic diagram of the structure of one embodiment of a lamp according to the present invention;

[0036] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0037] Figure 4 for Figure 2 A magnified view of a section at point B in the middle;

[0038] Figure 5 This is a cross-sectional schematic diagram of one embodiment of a lamp according to the present invention;

[0039] Figure 6 This is a cross-sectional view of one embodiment of a lamp according to the present invention;

[0040] Figure 7 This is an exploded view of one embodiment of a lamp according to the present invention.

[0041] Figure label:

[0042] 100. Lamp fixture; 1. Heat dissipation body; 2. Lens assembly; 3. Lamp panel; 11. Heat dissipation main plate; 12. Heat dissipation secondary plate; 10a. Mounting cavity; 10b. Inner cavity wall; 10c. Outer cavity wall; 111. First protrusion; 112. Second protrusion; 21. Lens; 22. Drive unit; 211. First limiting structure; 212. Second limiting structure; 220. First limiting surface; 221. First engaging surface; 222. First clearance hole; 223. First guide surface; 232. Second clearance hole; 230. Second limiting surface; 213. First opening; 241. Groove; 10. Drive rod; 311. First machining hole; 312. Second machining hole; 313. First sealing ring; 314. Second sealing ring. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] Please refer to Figure 1-2 As shown in Figures 5-6, this embodiment provides a lamp 100, including a heat dissipation body 1 and a lens assembly 2 disposed below the heat dissipation body 1. The heat dissipation body 1 is recessed inward to form a mounting cavity 10a. The lamp 100 also includes a lamp plate 3 mounted in the mounting cavity 10a, and the light from the lamp plate 3 is emitted outward through the lens assembly 2. The heat dissipation body 1 includes a main heat dissipation plate 11 and a secondary heat dissipation plate 12 mounted at the center of the main heat dissipation plate 11. The mounting cavity 10a is located between the main heat dissipation plate 11 and the secondary heat dissipation plate 12. Further, the mounting cavity 10a includes a... The inner cavity wall 10b near the heat dissipation sub-plate 12 and the outer cavity wall 10c away from the heat dissipation sub-plate 12 are provided with a first protrusion 111 protruding towards the inner cavity wall 10b and a second protrusion 112 protruding towards the outer cavity wall 10c. The first protrusion 111 and the second protrusion 112 are both spaced apart from the bottom of the mounting cavity 10a in the vertical direction. The lens assembly 2 includes a lens 21 and a driving part 22 provided on one side of the lens 21. By applying external force to the driving part 22, the driving part 22 can be moved and drive the lens 21 to rotate.

[0046] Please refer to Figure 1-2 As shown in Figures 5-6, according to the above scheme, the lens 21 is further provided with a first limiting structure 211 and a second limiting structure 212. In this embodiment, the first limiting structure 211 is disposed on the outer peripheral side of the lens 21 and corresponds to the first protrusion 111, and the second limiting structure 212 is disposed on the inner peripheral side of the lens 21 and corresponds to the second protrusion 112. The first limiting structure 211 includes a first clearance hole 222 on the outer periphery of the lens 21 and a first limiting surface 220 on one side of the first clearance hole 222. The second limiting structure 212 includes a second clearance hole 232 on the inner periphery of the lens 21 and a second limiting surface 230 on one side of the second clearance hole 232. In this embodiment, since the heat dissipation body 1, the lens 21, and the lamp plate 3 are all circular, the first limiting surface 220 and the first clearance hole 222 are arc-shaped, and the second limiting surface 230 and the second clearance hole 232 are arc-shaped. It can be understood that when the lens 21 needs to be installed on the heat dissipation body 1, the first protrusion 111 passes through the first clearance hole 222, and the second protrusion 112 passes through the second clearance hole 232, driving the driving part 22 to rotate so that the first limiting surface 220 rotates to directly below the first protrusion 111 and the second limiting surface 232. The lens 21 is mounted and confined in the mounting cavity 10a by rotating the drive unit 22 to directly below the first protrusion 111 and the second protrusion 232 to directly below the second protrusion 112. When it is necessary to remove the lens 21 from the heat dissipation body 1, the drive unit 22 is rotated to drive the first clearance hole 222 to rotate directly below the first protrusion 111 and the second clearance hole 232 to rotate directly below the second protrusion 112. The lens 21 is then pulled in the up-down direction to separate it from the heat dissipation body 1. It is understood that in actual use, the lamp 100 needs to replace the lens 21 with various angles to improve the lighting effect of the lamp 100 by matching different angles of the lens 21 in different usage locations. This structure is designed to move the drive unit 22 to drive the lens 21 to rotate, so that the lens 21 can be fixed or separated from the heat dissipation body 1, thereby improving the efficiency of lens 21 installation and removal and facilitating its use.

[0047] Please refer to Figure 1-4As shown, specifically, the first limiting surface 220 includes a first engaging surface 221 that engages with the first protrusion 111 and a first guide surface 223 connecting the first engaging surface 221 and the first clearance hole 222; the second limiting surface 230 is disposed on both sides of the second clearance hole 232 and engages with the second protrusion 112; in this embodiment, the height of the end connected to the first clearance hole 222 via the first guide surface 223 gradually increases towards the end connected to the first engaging surface 221, so that when the lens 21 rotates via the drive unit 22, the first protrusion 111 can be tightly attached to the first engaging surface 221 via the first guide surface 223; it can be understood that during installation, the first protrusion 111 passes through the first clearance hole 222, and the second protrusion 112... The drive unit 22 rotates through the second clearance hole 232 to move the first protrusion 111 along the first guide surface 223 to directly above the first engagement surface 221; and moves the second protrusion 112 to directly above the end of the second limiting surface 230 away from the second clearance hole 232, so that the first protrusion 111 and the first engagement surface 221 are in close contact with each other, and the second protrusion 112 and the second limiting surface 230 are in close contact with each other, thereby limiting the lens 21 to the mounting cavity 10a; during disassembly, the drive unit 22 rotates to move the first protrusion 111 along the first guide surface 223 to directly above the first clearance hole 222, and moves the second protrusion 112 along the second limiting surface 230 to directly above the second clearance hole 232, and separates the lens 21 from the heat dissipation body 1 by pulling the lens 21 in the up and down direction.

[0048] Preferably, the first protrusion 111 and the second protrusion 112 have the same thickness, and the thickness of the first protrusion 111 is between 1 / 2 and 2 / 3 of the thickness of the lens 21. Within this thickness range, the first protrusion 111 can withstand the pressure generated by the first engaging surface 221 being pressed against each other, thus ensuring the stability of the engaging relationship between the heat dissipation body 1 and the lens 21.

[0049] Based on the above scheme, in this embodiment, please refer to... Figure 1 and Figure 6 As shown, the drive unit 22 has a groove 241 on the side opposite to the first protrusion 111. The drive unit 22 can be moved by inserting the drive rod 10 into the groove 241. This structure simplifies the way the drive unit 22 is moved. When the drive unit 22 needs to be moved, it can be rotated by inserting the drive rod 10 into the groove 241. When the drive unit 22 does not need to be moved, the drive rod 10 can be pulled out. Optionally, the drive rod 10 in this embodiment can be a screwdriver or other rod type, which is not limited here.

[0050] Please refer to Figure 5-6As shown, preferably, the second limiting surface 230 gradually slopes upward from the side near the second relief hole 232 to the side away from the second relief hole 232; furthermore, the end of the second limiting surface 230 away from the second relief hole 232 is set as a smooth plane. This structure allows the lens 21 to rotate with the drive unit 22, and the first protrusion 111 can gradually slide towards the first engaging surface 221 through the inclined first guide surface 223 to be fixedly engaged with the first engaging surface 221. At the same time, during this process, the second protrusion 112 moves from the second relief hole 232... 32 gradually moves toward the second limiting surface 230 on the same side, thereby engaging with the second limiting surface 230 and being limited by the second limiting surface 230; furthermore, the tilt angle of the second limiting surface 230 is between 1 / 3 and 1 / 4 of the tilt angle of the first guide surface 223. Within this tilt angle range, the second protrusion 112 and the second limiting surface 230 form a tightly fitting engagement relationship, which cooperates with the engagement relationship of the first engaging surface 221 and the first protrusion 111 to achieve a dual stabilizing effect for the installation of the lens 21.

[0051] Please refer to Figure 3-4 As shown, specifically, the length L1 of the first protrusion 111 is between 1 / 2 and 2 / 3 of the length L2 of the first engaging surface 221; the length L3 of the second protrusion 112 is between 1 / 2 and 2 / 3 of the length L4 of the second limiting surface 230 on either side, that is, between 1 / 3 and 1 / 4 of the length of the second limiting surface 230, and the lengths of the second limiting surfaces 230 on both sides of the second clearance hole 232 are equal; this structure ensures that the engagement relationship is more fixed when the first protrusion 111 and the first engaging surface 221 are engaged with each other, and the second protrusion 112 and the second limiting surface 230 are engaged with each other, avoiding the impact of vibration or shaking on the engagement relationship, and ensuring that the lens 21 can be stably installed on the heat dissipation body 1.

[0052] Please refer to Figure 1-2 As shown in Figures 5-6, specifically, in this embodiment, multiple first protrusions 111 and multiple second protrusions 112 are provided. The multiple first protrusions 111 are evenly distributed on the outer cavity wall 10c of the mounting cavity 10a, and multiple second protrusions 112 are evenly distributed on the inner cavity wall 10b of the mounting cavity 10a. It can be understood that multiple first limiting structures 211 that match the first protrusions 111 and multiple second limiting structures 212 that match the second protrusions 112 are also provided. In addition, in this structure, the number of first protrusions 111 is greater than the number of second protrusions 112. In this embodiment, there are 8 first protrusions 111 and 4 second protrusions 112. This structure ensures that the number of first protrusions 111 and second protrusions 112 provided can meet the stability requirements of lens 21 during installation, ensuring that it is sufficiently stable.

[0053] Please refer to Figure 1-2As shown, preferably, the heat dissipation mainboard 11 has a first opening 213, and the driving part 22 has a groove 241 on the side opposite to the first protrusion 111. In this structure, the driving part 22 is positioned towards the center of the lens 21. The driving part 22 is movable by the driving rod 10 passing through the first opening 213 and inserting into the groove 241. It can be understood that in this embodiment, the first opening 213 limits the movement range of the driving part 22, so that the rotation angle of the driving part 22 around the center of the lens 21 is the same as the opening angle of the first opening 213, and the opening angle of the first opening 213 is set between 10° and 15°. In this embodiment, optionally, the opening angle of the first opening 213 is set to 13°, that is, after the lens 21 rotates 13° clockwise by the moving part, The first clearance hole 222 moves away from the first protrusion 111 and moves the first engagement surface 221 to be close to the first protrusion 111 through the first guide surface 223; the second clearance hole 232 moves away from the first protrusion 111 and limits the second protrusion 112 through the second limiting surface 230; after the lens 21 is rotated 13° counterclockwise by the moving member, the first engagement surface 221 moves away from the first protrusion 111 and moves the first clearance hole 222 to below the first protrusion 111 through the first guide surface 223, so that the first protrusion 111 can disengage from the lens 21 through the first clearance hole 222; the second limiting surface 230 moves away from the second protrusion 112 and moves to below the second protrusion 112 through the second clearance hole 232, so that the second protrusion 112 can disengage from the lens 21 through the second clearance hole 232.

[0054] Please refer to Figure 5-7 As shown, preferably, the lamp plate 3 is attached to the cavity wall of the mounting cavity 10a, that is, attached to the upper end surface inside the heat dissipation body 1. The lens 21 covers the lamp plate 3 and is connected to the heat dissipation body 1. The bottom wall of the mounting cavity 10a has a first machining hole 311 facing the first protrusion 111 and a second machining hole 312 facing the second protrusion 112. The first protrusion 111 and the second protrusion 112 are formed by stamping on the heat dissipation body 1 through a stamping machine. In addition, the lamp 100 also includes a first sealing ring 313 and a second sealing ring 314 installed in the mounting cavity 10a. The first sealing ring 313 is installed between the lens 21 and the heat dissipation main plate 11. The second sealing ring 314 is installed between the lens 21 and the heat dissipation sub-plate 12. Further, in this structure, the first sealing ring 313 is disposed on the outer periphery of the first machining hole 311 and the lamp plate 3, and the second sealing ring 314 is disposed on the inner periphery of the second machining hole 312 and the lamp plate 3. This structure is used to seal the mounting cavity 10a to prevent water from entering the mounting cavity 10a and causing the lamp plate 3 to burn out. In addition, in this embodiment, by setting the inner cavity wall 10b and the outer cavity wall 10c of the mounting cavity 10a with a gap from the lens 21, the lens 21 will not rub against the periphery of the heat dissipation main plate 11 and the heat dissipation sub-plate 12 during rotation, thus protecting the lens 21.

[0055] In summary, this invention provides a lighting fixture. When a lens needs to be mounted on a heat sink body, a first protrusion passes through a first clearance hole, and a second protrusion passes through a second clearance hole. A driving unit rotates to rotate a first limiting surface directly below the first protrusion and a second limiting surface directly below the second protrusion, thereby confining the lens within the mounting cavity. When the lens needs to be removed from the heat sink body, the driving unit rotates to rotate the first clearance hole directly below the first protrusion and the second clearance hole directly below the second protrusion. The lens is then pulled vertically to separate it from the heat sink body. In actual use, various lenses with different angles need to be replaced to improve the lighting effect of the fixture in different applications. This invention moves the driving unit to rotate the lens, allowing the lens to be fixed or separated from the heat sink body, improving the efficiency of lens installation and removal and facilitating use.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A lighting fixture, comprising a heat dissipation body and a lens assembly disposed on one side of the heat dissipation body, characterized in that: The heat dissipation body includes a heat dissipation main board and a heat dissipation sub-plate installed in the center of the heat dissipation main board. The heat dissipation body is recessed downward to form a mounting cavity, which is located between the heat dissipation main board and the heat dissipation sub-plate. The mounting cavity includes an inner cavity wall near the heat dissipation sub-plate and an outer cavity wall away from the heat dissipation sub-plate. The outer cavity wall is provided with a first protrusion facing the inner cavity wall, and the inner cavity wall is provided with a second protrusion facing the outer cavity wall. The first protrusion and the second protrusion are both spaced apart from the bottom wall of the mounting cavity in the vertical direction. The lens assembly includes a lens and a driving part disposed on the lens; The lens is recessed with a first limiting structure and a second limiting structure, the first limiting structure corresponding to the first protrusion and the second limiting structure corresponding to the second protrusion; The first limiting structure includes a first clearance hole disposed on the outer periphery of the lens and a first limiting surface arcuately disposed on one side of the first clearance hole; the second limiting structure includes a second clearance hole disposed on the inner periphery of the lens and a second limiting surface arcuately disposed on one side of the second clearance hole. During installation, the first protrusion passes through the first clearance hole, and the second protrusion passes through the second clearance hole, driving the driving part to rotate so that the first limiting surface rotates to directly below the first protrusion and the second limiting surface rotates to directly below the second protrusion, thereby limiting the lens installation in the mounting cavity; During disassembly, the drive unit is driven to rotate so that the first clearance hole rotates to the position directly below the first protrusion and the second clearance hole rotates to the position directly below the second protrusion. The lens is then pulled in the vertical direction to separate it from the heat dissipation body.

2. A lamp according to claim 1, characterized in that: The first limiting surface includes a first engaging surface that engages with the first protrusion and a first guide surface that connects the first engaging surface and the first clearance hole; The second limiting surface is disposed on both sides of the second clearance hole and engages with the second protrusion accordingly; The height of the end of the first guide surface connected to the first clearance hole gradually increases toward the end of the first guide surface connected to the first engagement surface; During installation, the first protrusion passes through the first clearance hole, the second protrusion passes through the second clearance hole, and the driving part is driven to rotate so that the first protrusion moves along the first guide surface to directly above the first engagement surface. This causes the second protrusion to move directly above the end of the second limiting surface away from the second clearance hole; During disassembly, the drive unit is driven to rotate so that the first protrusion moves along the first guide surface to directly above the first clearance hole, and the second protrusion moves along the second limiting surface to directly above the second clearance hole. The lens is then pulled in the up-down direction to separate the lens from the heat dissipation body.

3. A lamp according to claim 2, characterized in that: The first protrusion and the second protrusion have the same thickness; The thickness of the first protrusion is between 1 / 2 and 2 / 3 of the thickness of the lens.

4. A lamp according to claim 2, characterized in that: The second limiting surface gradually slopes upward from the side closest to the second relief hole toward the side furthest from the second relief hole.

5. A lamp according to claim 4, characterized in that: The inclination angle of the second limiting surface is between 1 / 3 and 1 / 4 of the inclination angle of the first guide surface.

6. A lamp according to claim 2, characterized in that: The length of the first protrusion is between 1 / 2 and 2 / 3 of the length of the first engaging surface, and the length of the second protrusion is between 1 / 3 and 1 / 4 of the length of the second limiting surface.

7. A lamp according to claim 1, characterized in that: Both the first protrusion and the second protrusion are provided in multiples, with the multiple first protrusions evenly distributed on the outer cavity wall of the mounting cavity and the multiple second protrusions evenly distributed on the inner cavity wall of the mounting cavity; The number of the first protrusion is greater than the number of the second protrusion.

8. A lamp according to claim 1, characterized in that: The heat dissipation motherboard has a first opening, and the drive part has a groove on the side opposite to the first protrusion. The drive part can be moved by passing through the first opening and inserting into the groove through a drive rod. The opening angle of the first opening is the same as the rotation angle of the drive unit; The opening angle of the first opening is set between 10° and 15°.

9. A lamp according to claim 8, characterized in that: The lamp also includes a lamp plate installed in the mounting cavity, the lamp plate being attached to the cavity wall of the mounting cavity, and the lens covering the lamp plate and connected to the heat dissipation body; The bottom wall of the mounting cavity is provided with a first machining hole facing the first protrusion, and the bottom wall of the mounting cavity is provided with a second machining hole facing the second protrusion; The lamp also includes a first sealing ring and a second sealing ring installed in the mounting cavity. The first sealing ring is installed between the lens and the heat dissipation main plate, and the second sealing ring is installed between the lens and the heat dissipation subplate.

10. A lamp according to claim 1, characterized in that: The inner and outer walls of the mounting cavity are both spaced apart from the lens.

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