An assembled energy-saving anti-glare ceiling lamp

Abstract

The present invention relates to the technical field of LED lamps, and specifically to an assembled energy-saving and anti-glare ceiling lamp, comprising: a base and an outer shell at its bottom, a reflector being installed inside the outer shell through a bracket; a fastener is designed at the top of the reflector located in the outer shell, a lampshade is assembled on the bottom of the base through the fastener, a sealed B cavity is formed between the lampshade and the bottom of the base, and a plurality of groups of LED lamp beads are installed in the B cavity; an open A cavity is installed inside the base above the B cavity, and a driving power supply is installed in the A cavity; a sealed electrical connection relationship is established between the LED lamp beads and the driving power supply; the assembled energy-saving and anti-glare ceiling lamp provided by the present invention can effectively isolate the LED lamp beads from the driving power supply, effectively reduce the influence of the heat generated by the driving power supply on the LED lamp beads, and thus effectively improve the service life of the ceiling lamp.

Description

Technical Field

[0001] The invention relates to the technical field of LED lamps, in particular to an assembled energy-saving and anti-glare ceiling lamp. Background Art

[0002] A ceiling light is a downward-emitting lighting fixture embedded in the ceiling. Traditional ceiling lights often have glare problems in their design, which not only affects the lighting effect but may also have an adverse effect on the user's vision. Therefore, existing ceiling lights usually have an anti-glare function.

[0003] As the global energy crisis becomes increasingly severe and environmental awareness continues to increase, energy-saving technologies are increasingly being used in various fields, including lighting. Compared with traditional incandescent and fluorescent lamps, LED lighting technology has a significant energy-saving effect. Therefore, LED lamp beads are usually used as the light source of ceiling lamps.

[0004] The assembly of ceiling lamps is generally to directly install a lampshade on the outside of the LED lamp beads to protect both the LED lamp beads and the driving power supply. However, the life of LED lamp beads is greatly affected by temperature, and the driving power supply generates heat when working, which will have a negative impact on the LED lamp beads. In the prior art, the LED lamp beads and the driving power supply of the ceiling lamp are installed in the same chamber, so the heat generated by the driving power supply will interfere with the LED lamp beads, thereby affecting the life of the ceiling lamp. Summary of the invention

[0005] The present invention provides an assembled energy-saving anti-glare ceiling lamp, which can effectively isolate LED lamp beads from a driving power supply, effectively reduce the influence of heat generated by the driving power supply on the LED lamp beads, and thus effectively increase the service life of the ceiling lamp.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] An assembled energy-saving anti-glare ceiling lamp, comprising:

[0008] The base and the shell at the bottom thereof, the interior of the shell is provided with a reflector plate installed through a bracket; a fastener is designed at the top end of the reflector plate located in the shell, a lampshade is assembled and installed at the bottom of the base through the fastener, a sealed B cavity is formed between the lampshade and the bottom of the base, and a plurality of groups of LED lamp beads are installed in the B cavity; a flange is integrally formed at the edge of the lampshade, a receiving groove is provided on the flange, a sealing film is pasted in the receiving groove, and a butt joint gap is generated when the flange is butted against the base; an open A cavity is installed inside the base located above the B cavity, and a driving power supply is installed in the A cavity; a sealed electrical connection relationship is formed between the LED lamp beads and the driving power supply to avoid communication between the A cavity and the B cavity; a passive heat dissipation structure is designed on the base.

[0009] Optionally, a high-pressure chamber is opened inside the base, and an annular groove is opened at the bottom of the base. The annular groove and the high-pressure chamber are interconnected, and the annular groove is located at the docking gap. After the docking is completed, the high-pressure chamber will input high-pressure gas into the annular groove. A thermal switch is designed in the base, and the thermal switch controls the connection between the high-pressure chamber and the annular groove.

[0010] Optionally, an assembly groove is opened inside the base, and a first piston plate is piston-slidably installed inside the assembly groove, and a piston rod is fixedly installed on the first piston plate. The bottom end of the piston rod passes through the bottom of the base. When the lampshade is docked with the base, the outer wall of the flange will drive the piston rod and the first piston plate to move upward, and the high-pressure chamber is formed between the top of the first piston plate and the assembly groove.

[0011] Optionally, the thermal switch includes an assembly channel opened inside the base, and both ends of the assembly channel are respectively connected to the high-pressure chamber and the annular partition groove, and part of the interior of the assembly channel is filled with hot melt adhesive, which is in a solidified state and blocks the assembly channel. When heated, the hot melt adhesive will melt into liquid and release the blockage of the assembly channel.

[0012] Optionally, a detection groove is opened inside the base, and a second piston plate is piston-slidingly installed in the detection groove. A probe is fixedly installed on the top of the second piston plate. The probe can pass through the outer wall of the base. The detection groove is connected to the annular partition groove. When the internal pressure of the detection groove increases, the second piston plate will be driven to displace and the end of the probe will pass through to the outside of the base.

[0013] Optionally, a plurality of water-absorbing resin particles are installed inside the annular partition groove, and the water-absorbing resin particles are ellipsoidal.

[0014] Optionally, the fastener includes a plurality of assembly pins designed on the top of the reflective plate, and the plurality of assembly pins are distributed in a circular array on the bottom of the base. The outer wall of the lampshade is provided with a plurality of assembly ridges, and a short-distance card gap of a spiral upward type is designed between the assembly ridges and the flange, and the short-distance card gap gradually decreases in the spiral upward direction.

[0015] Optionally, the passive heat dissipation structure includes a plurality of hollow groove groups opened on the top of the base, the plurality of hollow groove groups are diffusely distributed outward in the form of a circular ring, the hollow groove groups include a plurality of heat exchange grooves distributed in a ring array, and the plurality of hollow groove groups surround the periphery of cavity A.

[0016] Optionally, a plurality of bolt posts with bolt holes are designed on the top of the flange, a plurality of docking ports are provided in the heat exchange tank, and the docking ports and the bolt posts are locked by fastening bolts.

[0017] Optionally, the lampshade is made of transparent glass, the annular inner wall of the reflective plate is coated with an anti-glare coating, and a cover body is detachably installed on the top of the A cavity, and a plurality of heat dissipation holes are designed on the cover body.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By assembling the lampshade at the bottom of the base, the B cavity and the A cavity can be isolated from each other. The physical isolation method can reduce the influence of the heat generated by the driving power supply on the LED lamp beads. And through the cooperation between the base, the lampshade and the sealing film, the A cavity can be more effectively sealed, thereby protecting the LED lamp beads and avoiding interference from external water vapor or dust, thereby effectively improving the service life of the ceiling lamp. At the same time, the isolation design between the driving power supply and the LED lamp beads is also more convenient for maintenance and replacement.

[0020] 2. After cavity B is formed, the connection between the high-pressure chamber and the annular groove is controlled by a thermal switch. Due to the different pressures between the high-pressure chamber and the annular groove, the high-pressure gas in the high-pressure chamber will be transferred to the annular groove to balance the pressure. And since the annular groove is in the docking gap, the sealing performance of cavity B can be judged by testing the pressure in the annular groove.

[0021] 3. By designing a probe, the sealing performance of cavity B can be detected and judged by the probe; when the probe does not output to the outside or outputs to the outside and then returns, it can be determined that there is a problem with the sealing performance of cavity B, because the pressure in the detection groove decreases after increasing, which is caused by the failure of the sealing of cavity B. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the external three-dimensional structure of the present invention;

[0023] Figure 2 A top view of the present invention;

[0024] Figure 3 For the present invention Figure 2 Sectional view at CC;

[0025] Figure 4 For the present invention Figure 3 The enlarged view of point D in the middle;

[0026] Figure 5 It is a schematic diagram of the structure of cavity A and cavity B in the present invention;

[0027] Figure 6 It is a schematic diagram of the structural disassembly of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the base in the present invention.

[0029] In the figure: 1, base; 2, shell; 3, reflector; 4, lampshade; 5, cover; 6, flange; 7, sealing film; 8, annular groove; 9, first piston plate; 12, water-absorbing resin particles; 13, assembly channel; 14, assembly groove; 15, second piston plate; 16, assembly convex strip; 17, assembly pin; 18, hot melt adhesive. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 7 , the embodiment of the present invention provides a technical solution:

[0032] An assembled energy-saving anti-glare ceiling lamp, comprising:

[0033] The base 1 and the shell 2 at the bottom thereof, the interior of the shell 2 is provided with a reflector 3 installed through a bracket; the annular inner wall of the reflector 3 is coated with an anti-glare coating, and the anti-glare coating is used to improve the anti-glare performance of the ceiling lamp; a fastener is designed at the top of the reflector 3 located in the shell 2, and a lampshade 4 is assembled and installed at the bottom of the base 1 through the fastener, and a sealed B cavity is formed between the lampshade 4 and the bottom of the base 1, and a plurality of groups of LED lamp beads are installed in the B cavity; a flange 6 is integrally formed at the edge of the lampshade 4, and a receiving groove is opened on the flange 6, and a sealing film 7 is pasted in the receiving groove, and the flange 6 A docking gap is generated when docking with the base 1; an open cavity A is installed inside the base 1 above the cavity B, and the driving power supply is installed in the cavity A; the LED lamp bead and the driving power supply are in a sealed electrical connection relationship to avoid the connection between the cavity A and the cavity B; the isolation between the cavity A and the cavity B can prevent the interference source in the cavity A that is in contact with the outside world from entering the cavity B, thereby avoiding affecting the normal use of the LED lamp bead; a passive heat dissipation structure is designed on the base 1, wherein the passive heat dissipation structure can be: a heat sink, a heat dissipation glue or a heat dissipation resin, etc., which can be selected according to actual needs.

[0034] In the ceiling lamp of the prior art, since the driving power supply and the LED lamp beads are not designed separately, the LED lamp beads are easily affected by the heat generated by the driving power supply during operation, which affects the service life. Therefore, in the present invention, by installing the driving power supply in cavity A and the LED lamp beads in cavity B, the LED lamp beads and the driving power supply are in a sealed electrical connection relationship, and by assembling the lampshade 4 at the bottom of the base 1, the B cavity and the A cavity can be isolated from each other, and the B cavity is in a sealed state. By using physical isolation, the influence of the heat generated by the driving power supply on the LED lamp beads can be reduced, and the service life of the LED lamp beads can be effectively improved. At the same time, the isolation design between the driving power supply and the LED lamp beads is more convenient for maintenance and replacement. Importantly, through the cooperation between the base 1, the lampshade 4 and the sealing film 7, the A cavity can be sealed more effectively, so that the LED lamp beads can be protected and prevented from being disturbed by external water vapor or dust.

[0035] In one preferred embodiment, a high-pressure chamber is provided inside the base 1, and an annular partition groove 8 is provided at the bottom of the base 1. The annular partition groove 8 is connected to the high-pressure chamber, and the annular partition groove 8 is located at the docking gap. After the docking is completed, the high-pressure chamber will input high-pressure gas into the annular partition groove 8. A thermal switch is designed inside the base 1, and the thermal switch controls the connection between the high-pressure chamber and the annular partition groove 8. Please refer to Figure 3 and Figure 4 In this embodiment, after the assembly between the base 1 and the lampshade 4 is completed, the sealing effect of the B cavity needs to be tested. The high-pressure chamber is designed inside the base 1. After the B cavity is formed, the connection between the high-pressure chamber and the annular groove 8 is controlled by a thermal switch. Due to the different pressures between the high-pressure chamber and the annular groove 8, the high-pressure gas in the high-pressure chamber will be transferred to the annular groove 8 to balance the pressure. Since the annular groove 8 is in the docking gap, when there is a problem with the sealing performance of the docking gap, the gas in the annular groove 8 will be transferred to the outside. When the pressure in the annular groove 8 or the high-pressure chamber tends to the atmospheric pressure, it can be determined that there is a problem with the sealing performance of the B cavity. If the pressure in the annular groove 8 or the high-pressure chamber is greater than the atmospheric pressure, it can be determined that the sealing performance of the B cavity is normal and the assembly docking is normal.

[0036] Furthermore, the base 1 is provided with an assembly groove 14 inside which a first piston plate 9 is piston-slidably mounted. A piston rod is fixedly mounted on the first piston plate 9. The bottom end of the piston rod passes through the bottom of the base 1. When the lampshade 4 is docked with the base 1, the outer wall of the flange 6 drives the piston rod and the first piston plate 9 to move upward. A high-pressure chamber is formed between the top of the first piston plate 9 and the assembly groove 14. Please refer to Figure 3 and Figure 4In this embodiment, the lampshade 4 will be close to the base 1 during the docking assembly process, and the flange 6 is a structure that forms a sealing fit with the bottom of the base 1. At this time, the flange 6 will cause the piston rod and the first piston plate 9 to move upward during the movement, thereby changing the volume of the high-pressure chamber from large to small, increasing the pressure inside the high-pressure chamber, and at the same time ensuring that the position of the first piston plate 9 remains unchanged after the assembly is completed. Before the flange 6 contacts the piston rod, the bottom of the piston rod will pass through the bottom of the base 1, thereby providing sufficient travel for the displacement of the first piston plate 9, wherein the thermal switch serves as a closed limiting structure of the high-pressure chamber.

[0037] In a preferred embodiment, the thermal switch includes an assembly channel 13 opened inside the base 1, and the two ends of the assembly channel 13 are respectively connected to the high-pressure chamber and the annular partition groove 8. Part of the interior of the assembly channel 13 is filled with hot melt adhesive 18, which is in a solidified state and blocks the assembly channel 13. The hot melt adhesive 18 will melt into a liquid state after being heated and release the blockage of the assembly channel 13. Please refer to Figure 3 and Figure 4 In the present embodiment, the hot melt adhesive 18 is a relatively hard solid in the solidified state, and its adhesive force can ensure the closure of the assembly channel 13, thereby blocking the connection between the annular partition groove 8 and the high-pressure chamber. Due to the thermal reaction performance of the hot melt adhesive 18, after the assembly is completed, the driving power supply is energized to generate heat, and the heat reaches a preset temperature, which can be achieved without heat dissipation. At this time, the heat will be transferred to the hot melt adhesive 18, and the hot melt adhesive 18 will gradually soften and turn into liquid at this temperature. At this time, the high-pressure gas in the high-pressure chamber will break through the hydraulic hot melt adhesive 18. At this time, the annular partition groove 8 and the high-pressure chamber can be connected through the assembly channel 13. At this time, the self-inspection of the sealing performance of the B cavity can be completed. Among them, with respect to the preset temperature, the thermal reaction temperatures of different hot melt adhesives 18 are different, that is, the temperatures at which the hot melt adhesive 18 is converted from solid to liquid are different.

[0038] Furthermore, a detection groove is provided inside the base 1, in which a second piston plate 15 is piston-slidably installed, and a probe is fixedly installed on the top of the second piston plate 15. The probe can penetrate the outer wall of the base 1, and the detection groove is connected to the annular partition groove 8. When the internal pressure of the detection groove increases, the second piston plate 15 will be driven to move and the end of the probe will pass through the outside of the base 1. Please refer to Figure 3And its detailed enlarged view, in this embodiment, in order to better show the results of the sealing performance test of chamber B, the displacement of the probe is used for judgment. After the annular groove 8 is connected with the high-pressure chamber, the pressure inside the annular groove 8 will increase. Due to the connection relationship between the detection groove and the annular groove 8, the pressure inside the detection groove will also increase, thereby driving the second piston plate 15 to displace, and then causing the probe to output outward. If the probe does not output outward or returns after outputting outward, it can be determined that there is a problem with the sealing performance of chamber B at this time, because the pressure in the detection groove decreases after increasing, which is caused by the failure of the sealing of chamber B.

[0039] Specifically, in combination with the design of the heat exchange tank described below, the probe's exit position can be set in the heat exchange tank to avoid the probe being designed at the annular outer wall of the base 1, which affects the overall appearance of the ceiling lamp.

[0040] Furthermore, a plurality of water-absorbent resin particles 12 are installed inside the annular groove 8, and the water-absorbent resin particles 12 are ellipsoidal. By installing the ellipsoidal water-absorbent resin particles 12 inside the annular groove 8, the annular groove 8 can be expanded and filled when water vapor invades, thereby improving the protective performance of the docking gap. The water-absorbent resin particles 12 will not interfere with the connectivity of the annular groove 8 under normal conditions, and the flexible characteristics of the water-absorbent resin particles 12 enable them to be stably clamped inside the annular groove 8, making it easy to install.

[0041] In a preferred embodiment, the fastener includes a plurality of assembly pins 17 designed on the top of the reflector 3, and the plurality of assembly pins 17 are distributed in a circular array at the bottom of the base 1. The outer wall of the lampshade 4 is provided with a plurality of assembly ridges 16, and a short distance card slot of a spiral upward type is designed between the assembly ridges 16 and the flange 6, and the short distance card slot gradually decreases in the spiral upward direction, see Figure 6 In this embodiment, after the reflector 3 is installed, the lampshade 4 and the flange 6 are docked in the correct position. At this time, the lampshade 4 is rotated, and the gradual change performance of the short-distance card gap and the cooperation of the assembly pin 17 are utilized to enable the lampshade 4 to move upward.

[0042] Among them, the fasteners can also be a fit between threaded grooves. A thread is designed on the annular outer wall of the flange 6, a lower edge is designed on the base 1, and then a threaded groove is designed on the annular inner wall of the lower edge, so that the lampshade 4 and the flange 6 can be spirally displaced upward or downward when rotating, so that the sealing film 7 can complete the filling and sealing of the docking gap.

[0043] In a preferred embodiment, the passive heat dissipation structure includes a plurality of hollow groove groups opened on the top of the base 1, the plurality of hollow groove groups are diffusely distributed outward in the form of a ring, the hollow groove groups include a plurality of heat exchange grooves distributed in a ring array, and the plurality of hollow groove groups surround the periphery of the A cavity, see Figure 1 , Figure 2 , Figure 5 and Figure 6 In this embodiment, the inner wall of the heat exchange groove serves as a heat-conducting structure. By opening a plurality of heat exchange grooves, the surface area of ​​the heat-conducting structure can be increased, thereby improving the heat dissipation capacity. In addition, the annular design of the plurality of hollow groove groups makes the heat dissipation capacity of cavity A uniform and efficient.

[0044] Furthermore, a plurality of bolt posts with bolt holes are designed on the top of the flange 6 , and a plurality of docking ports are provided in the heat exchange tank. The docking ports and the bolt posts are locked by tightening bolts to ensure the locking between the lampshade 4 and the base 1 .

[0045] Furthermore, the lampshade 4 is made of transparent glass, and a cover 5 is detachably installed on the top of cavity A. A plurality of heat dissipation holes are designed on the cover 5. By designing the cover 5, the operation of the driving power supply can be facilitated and the heat dissipation capacity can also be improved.

[0046] By utilizing the above structures, when assembling the ceiling lamp, the isolation between the LED lamp beads and the driving power supply can be ensured, the LED lamp beads can be sealed through the B cavity, and the sealing performance of the B cavity can be self-checked.

[0047] It should be noted that, in order to conveniently illustrate the A cavity and the B cavity, the LED lamp beads and the driving power supply are not drawn in the accompanying drawings; the A cavity and the B cavity in the component names are used to conveniently distinguish the two cavities, which can also be named the first cavity and the second cavity respectively; the LED lamp beads and the driving power supply are functional modules with mature application in the prior art, and this embodiment does not involve improvements to the LED lamp beads and the driving power supply, so their structure or specific composition will not be described in detail here.

[0048] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense without any doubt. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled energy-saving anti-glare ceiling lamp, characterized in that: include: A base (1) and a housing (2) at the bottom thereof, wherein a reflective plate (3) is installed inside the housing (2) via a bracket; A fastener is designed at the top of the reflective plate (3) located in the housing (2); a lampshade (4) is assembled and mounted on the bottom of the base (1) via the fastener; a sealed B cavity is formed between the lampshade (4) and the bottom of the base (1); and a plurality of groups of LED lamp beads are mounted in the B cavity; The edge of the lampshade (4) is integrally formed with a flange (6), a receiving groove is provided on the flange (6), a sealing film (7) is pasted in the receiving groove, and a butt joint gap is generated when the flange (6) is butt jointed with the base (1); An open cavity A is installed inside the base (1) located above cavity B, and a driving power source is installed in cavity A; The LED lamp bead and the driving power supply are in a sealed electrical connection to avoid the connection between cavity A and cavity B; The base (1) is designed with a passive heat dissipation structure; A high-pressure chamber is provided inside the base (1), and an annular partition groove (8) is provided at the bottom of the base (1). The annular partition groove (8) and the high-pressure chamber are communicated with each other. The annular partition groove (8) is located at the docking gap. After docking, the high-pressure chamber will input high-pressure gas into the annular partition groove (8). A thermal switch is designed inside the base (1), and the thermal switch controls the communication between the high-pressure chamber and the annular partition groove (8); The base (1) is provided with an assembly groove (14) inside, a first piston plate (9) is piston-slidably mounted inside the assembly groove (14), a piston rod is fixedly mounted on the first piston plate (9), the bottom end of the piston rod passes through the bottom of the base (1), when the lampshade (4) is docked with the base (1), the outer wall of the flange (6) drives the piston rod and the first piston plate (9) to move upward, and the high-pressure chamber is formed between the top of the first piston plate (9) and the assembly groove (14); The thermal switch comprises an assembly channel (13) opened inside the base (1), the two ends of the assembly channel (13) being respectively connected to the high-pressure chamber and the annular partition groove (8), and a portion of the interior of the assembly channel (13) is filled with hot melt adhesive (18), the hot melt adhesive (18) is in a solidified state and blocks the assembly channel (13), and the hot melt adhesive (18) melts into a liquid state after being heated and releases the blockage of the assembly channel (13).

2. The assembled energy-saving anti-glare ceiling lamp according to claim 1 is characterized in that: The base (1) has a detection groove formed inside, a second piston plate (15) is piston-slidably mounted in the detection groove, a probe is fixedly mounted on the top of the second piston plate (15), the detection groove is connected to the annular partition groove (8), and when the internal pressure of the detection groove increases, the second piston plate (15) is driven to move and the end of the probe is caused to pass out of the base (1).

3. The assembled energy-saving anti-glare ceiling lamp according to claim 1 is characterized in that: A plurality of water-absorbing resin particles (12) are installed inside the annular partition groove (8), and the water-absorbing resin particles (12) are ellipsoidal.

4. The assembled energy-saving anti-glare ceiling lamp according to claim 1 is characterized in that: The fastener comprises a plurality of assembly pins (17) designed on the top of the reflector (3), the plurality of assembly pins (17) being distributed in a circular array on the bottom of the base (1), the outer wall of the lampshade (4) being provided with a plurality of assembly ridges (16), a short-distance slot in a spiral upward direction being designed between the assembly ridges (16) and the flange (6), the short-distance slot gradually shrinking in the spiral upward direction.

5. The assembled energy-saving anti-glare ceiling lamp according to claim 4 is characterized in that: The passive heat dissipation structure comprises a plurality of hollow groove groups opened on the top of the base (1), the plurality of hollow groove groups being diffusely distributed outward in the form of a ring, the hollow groove groups comprising a plurality of heat exchange grooves distributed in a ring array, and the plurality of hollow groove groups surrounding the periphery of cavity A.

6. The assembled energy-saving anti-glare ceiling lamp according to claim 5 is characterized in that: The top of the flange (6) is designed with a plurality of bolt posts with bolt holes, and a plurality of docking ports are provided in the heat exchange tank, and the docking ports and the bolt posts are locked by fastening bolts.

7. The assembled energy-saving anti-glare ceiling lamp according to any one of claims 1 to 6, characterized in that: The lampshade (4) is made of transparent glass, the annular inner wall of the reflective plate (3) is coated with an anti-glare coating, and a cover body (5) is detachably mounted on the top of the A cavity, and a plurality of heat dissipation holes are designed on the cover body (5).

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