Waterproof explosion-proof lamp

Abstract

The utility model discloses a waterproof explosion-proof lamp, which relates to the field of lighting lamps and comprises a shell and a lampshade, an interface is arranged at the top of the shell, a light source and a radiator are arranged in the shell, the shell comprises a mounting disc, a radiating cylinder and a connecting cylinder, a first baffle ring and a second baffle ring are arranged at the bottom of the mounting disc, and a rubber ring is arranged at a wire passing port at the top of the radiating cylinder. A rubber gasket is arranged at the top of the rubber ring, cooling fins are arranged on the outer side wall of the cooling cylinder, the lampshade comprises a mounting plate and a light-transmitting cover, a first sealing strip and a second sealing strip are arranged at the top of the mounting plate, the connector comprises a sealing cover plate and a threaded cylinder, a pressing ring is arranged at the top of the sealing cover plate, and a protective steel mesh is fixedly welded to the bottom of the lampshade. The LED lamp is better in sealing effect, the waterproof performance of the connecting position and the interface position of the lampshade and the shell is higher, the waterproof effect of the lamp is improved, the LED lamp has the heat dissipation function, explosion caused by too high internal temperature can be avoided, and the overall waterproof and anti-explosion performance of the device is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of lighting fixtures, specifically a waterproof and explosion-proof lamp. Background Technology

[0002] Explosion-proof lamps are used in hazardous locations where flammable gases and dust are present. They are designed to prevent potential arcs, sparks, and high temperatures generated inside the lamp from igniting the surrounding flammable gases and dust, thus meeting explosion-proof requirements. They are also known as explosion-proof lighting fixtures or explosion-proof lamps. Different flammable gas mixtures require different explosion-proof ratings and types of explosion-proof lamps. Currently, explosion-proof lamps do not have sufficient safety margins and lack waterproof functionality.

[0003] To address the above issues, utility model patent CN216383795U discloses a waterproof and explosion-proof lamp with a safety structure. This device increases the safety factor of the explosion-proof lamp through an explosion-proof cavity, while the light-transmitting plate and fixing device provide multiple layers of protection. A drainage channel guides liquid, thus achieving a waterproof effect. However, the device has heat dissipation holes on the side of the explosion-proof lamp body, which easily allows moisture to enter the lamp body. Furthermore, the connection between the lamp holder and the light-transmitting plate is not sufficiently sealed; if welding is used at this point, the device will be difficult to disassemble, making light source maintenance and replacement challenging. Utility Model Content

[0004] The purpose of this invention is to provide a waterproof and explosion-proof lamp to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A waterproof and explosion-proof lamp includes a housing and a lampshade. The housing has an interface at its top and a light source and heat sink inside. The housing includes a mounting plate, a heat sink cylinder, and a connecting cylinder welded together from bottom to top. A fixing flange is located near the edge of the bottom of the mounting plate, and the bottom of the fixing flange has several threaded holes arranged circumferentially. A first retaining ring and a second retaining ring are sequentially fixedly installed near the fixing flange on the bottom of the mounting plate. The fixing flange and the first retaining ring form a first waterproof groove, and the first retaining ring and the second retaining ring form a second waterproof groove. Several heat dissipation fins are fixedly arranged circumferentially at the connection between the outer wall of the heat sink cylinder and the top wall of the mounting plate. The inner wall of the connecting cylinder has internal threads. The lampshade... The device includes a mounting plate, which is annular with several threaded holes circumferentially arranged around its edge. A light-transmitting cover is fixedly installed at the bottom of the mounting plate. A first sealing strip and a second sealing strip are fixedly installed sequentially from the outside to the inside at the top of the mounting plate. The first and second sealing strips are tightly fitted with the first and second waterproof grooves at the bottom of the mounting plate. The interface includes a sealing cover plate. A threaded cylinder is fixedly installed at the bottom of the sealing cover plate. The external thread of the threaded cylinder matches the internal thread of the connecting cylinder. A wiring hole is provided at the center of the top of the sealing cover plate. A pressure ring is fixedly installed at the top of the sealing cover plate. The pressure ring is made of rubber and the diameter of the central through hole of the pressure ring is smaller than the diameter of the power cord.

[0007] As a further embodiment of this utility model: the outer surface of the shell is treated with electrostatic powder coating and an additional waterproof coating.

[0008] As a further improvement of this utility model: the bottom of the mounting plate is provided with a groove, the top of the mounting plate penetrates the interior of the heat sink cylinder, and the diameter of the through opening at the top of the mounting plate is equal to the inner diameter of the heat sink cylinder. The top of the heat sink cylinder is provided with a wire passage, and the diameter of the wire passage is smaller than the inner diameter of the connecting cylinder.

[0009] As a further improvement of this utility model: a rubber ring is fitted at the wire passage at the top of the heat sink, the side of the rubber ring is provided with an annular groove and the annular groove is engaged with the wire passage around the top wall of the heat sink, a rubber pad is provided at the top of the rubber ring, and a wire groove is provided vertically in the center of both the rubber ring and the rubber pad, and the diameter of the wire groove is smaller than the diameter of the power cord.

[0010] As a further embodiment of this utility model: the light source includes a fixing plate and a component box. The fixing plate is installed in the groove at the bottom of the mounting plate by screws. The component box is fixedly installed on the top of the fixing plate. Several LED beads are evenly distributed at the bottom of the fixing plate. The component box contains components to ensure the normal operation of the LED beads. The top of the component box has a round hole.

[0011] As a further embodiment of this utility model: the heat sink is set inside the heat sink cylinder, and the heat sink is installed on the top of the component box by screws. The heat conduction fins of the heat sink are in contact with the inner wall of the heat sink cylinder, and a through hole is provided in the center of the heat sink.

[0012] As a further improvement of this utility model, a protective steel mesh is fixedly welded to the bottom of the lampshade.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The housing and lampshade can be connected by screws through the threaded holes on the mounting plate and fixing flange. The first and second sealing strips tightly abut against the first and second waterproof grooves, which can seal the connection between the housing and the lampshade. The double-layer sealing effect is better, preventing water vapor from entering the housing from the connection and improving the waterproof effect of the lamp.

[0015] 2. By setting the diameter of the central through-hole of the rubber ring, rubber pad, and compression ring to be smaller than the diameter of the power cord, the deformation function of the rubber allows the rubber ring, rubber pad, and compression ring to tightly compress the power cord, improving the sealing at the through-hole while ensuring the power cord can pass through normally. By screwing the threaded sleeve into the connecting sleeve, the sealing cover can be placed on top of the housing. During the tightening process, the threaded sleeve continuously compresses the rubber pad and rubber ring inside the connecting sleeve, further improving the sealing at the connecting sleeve and the interface, preventing moisture from entering the housing from the interface.

[0016] 3. The heat sink design prevents the internal temperature of the casing from becoming too high and causing an explosion. The external heat sink fins also ensure the sealing and waterproofing of the lamp, greatly improving the overall waterproof and explosion-proof performance of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model.

[0018] Figure 2 This is a schematic diagram of the disassembled structure of Embodiment 1 of this utility model.

[0019] Figure 3 This is a bottom view of the outer shell in Embodiment 1 of this utility model.

[0020] Figure 4 This is a partial cross-sectional structural diagram of Embodiment 1 of the present invention.

[0021] Figure 5 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model.

[0022] In the diagram: 1. Outer shell; 11. Mounting plate; 12. Heat sink; 13. Connecting cylinder; 14. Fixing flange; 15. First retaining ring; 16. Second retaining ring; 17. Heat sink fins; 18. Rubber ring; 19. Rubber pad; 2. Lampshade; 21. Mounting plate; 22. Light-transmitting cover; 23. First sealing strip; 24. Second sealing strip; 3. Interface; 31. Sealing cover; 32. Threaded cylinder; 33. Compression ring; 4. Light source; 41. Fixing plate; 42. Component box; 5. Heat sink; 6. Protective steel mesh. Detailed Implementation

[0023] The following embodiments will be described in detail with reference to the accompanying drawings. In the drawings and description, similar or identical parts are referred to by the same reference numerals. Furthermore, in practical applications, the shape, thickness, or height of each component may be enlarged or reduced. The embodiments listed in this utility model are merely illustrative and not intended to limit the scope of the utility model. Any obvious modifications or alterations made to this utility model do not depart from its spirit and scope.

[0024] Example 1

[0025] Please see Figures 1-4 In this embodiment of the utility model, a waterproof and explosion-proof lamp includes a housing 1 and a lampshade 2. The top of the housing 1 is provided with an interface 3, and the interior of the housing 1 is provided with a light source 4 and a heat sink 5. The outer surface of the housing 1 is treated with electrostatic powder coating and an additional waterproof coating.

[0026] The outer casing 1 includes a mounting plate 11, a heat sink 12, and a connecting cylinder 13, which are welded together sequentially from bottom to top. The mounting plate 11 has a groove at its bottom and its top extends through the interior of the heat sink 12, with the diameter of the through opening equal to the inner diameter of the heat sink 12. The heat sink 12 has a cable passage at its top, with a diameter smaller than the inner diameter of the connecting cylinder 13. A fixing flange 14 is located near the edge of the bottom of the mounting plate 11. The fixing flange 14 has several threaded holes arranged circumferentially at its bottom. A first retaining ring 15 and a second retaining ring 16 are sequentially fixedly installed near the fixing flange 14 at the bottom of the mounting plate 11. The fixing flange 14 and the first retaining ring 15 form a first waterproof groove, and the first retaining ring 15 and the second retaining ring 16 form a second waterproof groove. Several heat dissipation fins 17 are fixedly arranged circumferentially at the connection between the side wall of the heat sink 12 and the top wall of the mounting plate 11. A rubber ring 18 is fitted at the top cable opening of the heat sink 12. The side of the rubber ring 18 has an annular groove that engages with the circumference of the cable opening on the top wall of the heat sink 12. A rubber pad 19 is provided on the top of the rubber ring 18. Both the rubber ring 18 and the rubber pad 19 have vertically formed cable grooves at their centers, and the diameter of each groove is smaller than the diameter of the power cord. The inner wall of the connecting cylinder 13 has internal threads.

[0027] The lampshade 2 includes a mounting plate 21, which is annular with several threaded holes circumferentially arranged along its edge. A light-transmitting cover 22 is fixedly mounted on the bottom of the mounting plate 21. A first sealing strip 23 and a second sealing strip 24 are sequentially fixedly mounted on the top of the mounting plate 21 from the outside to the inside, and the first sealing strip 23 and the second sealing strip 24 are tightly fitted with the first and second waterproof grooves at the bottom of the mounting plate 11. The outer shell 1 and the lampshade 2 can be connected by screws through the threaded holes on the mounting plate 21 and the fixing flange 14. The first sealing strip 23 and the second sealing strip 24 tightly abut against the first and second waterproof grooves, sealing the connection between the outer shell 1 and the lampshade 2. The double-layer sealing effect is better, preventing moisture from entering the interior of the outer shell 1 from the connection, thus improving the waterproof effect of the lamp.

[0028] The interface 3 includes a sealing cover plate 31, with a threaded cylinder 32 fixedly installed at the bottom of the sealing cover plate 31. The external thread of the threaded cylinder 32 matches the internal thread of the connecting cylinder 13. A wiring hole is provided at the center of the top of the sealing cover plate 31, and a compression ring 33 is fixedly installed on the top of the sealing cover plate 31. The compression ring 33 is made of rubber, and the diameter of the central through hole of the compression ring 33 is smaller than the diameter of the power cord. By setting the diameter of the central through hole of the rubber ring 18, rubber pad 19, and compression ring 33 to be smaller than the diameter of the power cord, the deformation function of the rubber can be used to tightly squeeze the power cord with the rubber ring 18, rubber pad 19, and compression ring 33, thereby improving the sealing performance at the through-hole while ensuring that the power cord can pass through normally. By screwing the threaded cylinder 32 into the connecting cylinder 13, the sealing cover 31 can be placed on the top of the outer shell 1. During the tightening process, the threaded cylinder 32 continuously squeezes the rubber gasket 19 and rubber ring 18 inside the connecting cylinder 13, thereby further improving the sealing performance of the connecting cylinder 13 and the interface 3, and preventing moisture from entering the interior of the outer shell 1 from the interface 3.

[0029] The light source 4 includes a fixing plate 41 and a component box 42. The fixing plate 41 is installed in the bottom groove of the mounting plate 11 by screws. The component box 42 is fixedly installed on the top of the fixing plate 41. Several LED beads are evenly distributed on the bottom of the fixing plate 41. The component box 42 is equipped with components to ensure the normal operation of the LED beads. The top of the component box 42 is provided with a round hole for leading out the power cord.

[0030] The heat sink 5 is located inside the heat sink cylinder 12 and is mounted on the top of the component box 42 with screws. The heat-conducting fins of the heat sink 5 are in contact with the inner wall of the heat sink cylinder 12, thereby conducting the heat generated at the light source 4 to the heat dissipation fins 17 on the outside of the heat sink cylinder 12, and then dissipating the heat to the outside of the lamp through the heat dissipation fins 17. The heat sink 5 has a through-hole in the center for the power cord to pass through. The heat sink 5 prevents the internal temperature of the outer casing 1 from becoming too high and causing an explosion, and the external heat dissipation fins 17 ensure the sealing and waterproof performance of the lamp, greatly improving the overall waterproof and explosion-proof performance of the device.

[0031] Example 2

[0032] Please see Figure 5 Based on embodiment 1, a protective steel mesh 6 is fixedly welded to the bottom of the lampshade 2. The protective steel mesh 6 can protect the lampshade 2, preventing it from accidentally falling off or being damaged by external force, thus improving the overall safety of the lamp.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims in the field of lighting fixtures.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A waterproof and explosion-proof lamp, comprising a housing (1) and a lampshade (2), characterized in that, The outer casing (1) has an interface (3) on its top. The outer casing (1) has a light source (4) and a heat sink (5) inside. The outer casing (1) includes a mounting plate (11), a heat sink cylinder (12), and a connecting cylinder (13) welded together from bottom to top. The mounting plate (11) has a fixing flange (14) near its bottom edge. The fixing flange (14) has several threaded holes arranged circumferentially at its bottom. The mounting plate (11) has a first retaining ring (15) and a second retaining ring (16) fixedly installed at its bottom near the fixing flange (14). The fixing flange (14) and the first retaining ring (15) form a first waterproof groove, and the first retaining ring (15) and the second retaining ring (16) form a second waterproof groove. Several heat dissipation fins (17) are fixedly arranged circumferentially at the connection between the outer wall of the heat sink cylinder (12) and the top wall of the mounting plate (11). The connecting cylinder (13) has internal threads on its inner wall. The lampshade (2) includes a mounting plate (11). The mounting plate (21) is annular and has several threaded holes circumferentially arranged at its edge. A light-transmitting cover (22) is fixedly installed at the bottom of the mounting plate (21). A first sealing strip (23) and a second sealing strip (24) are fixedly installed on the top of the mounting plate (21) from the outside to the inside. The first sealing strip (23) and the second sealing strip (24) are tightly fitted with the first waterproof groove and the second waterproof groove at the bottom of the mounting plate (11). The interface (3) includes a sealing cover plate (31). A threaded cylinder (32) is fixedly installed at the bottom of the sealing cover plate (31). The external thread of the threaded cylinder (32) matches the internal thread of the connecting cylinder (13). A wiring hole is provided at the center of the top of the sealing cover plate (31). A pressure ring (33) is fixedly installed on the top of the sealing cover plate (31). The pressure ring (33) is made of rubber and the diameter of the central through hole of the pressure ring (33) is smaller than the diameter of the power cord.

2. The waterproof and explosion-proof lamp according to claim 1, characterized in that, The outer surface of the outer shell (1) is treated with electrostatic powder coating and a waterproof coating.

3. The waterproof and explosion-proof lamp according to claim 1, characterized in that, The mounting plate (11) has a groove at the bottom and the top of the mounting plate (11) penetrates the interior of the heat sink (12). The diameter of the through opening at the top of the mounting plate (11) is equal to the inner diameter of the heat sink (12). The top of the heat sink (12) has a wire passage, and the diameter of the wire passage is smaller than the inner diameter of the connecting cylinder (13).

4. The waterproof and explosion-proof lamp according to claim 3, characterized in that, A rubber ring (18) is fitted at the top of the heat sink (12) where the wire is inserted. The side of the rubber ring (18) has an annular groove that engages with the wire insertion area on the top wall of the heat sink (12). A rubber pad (19) is provided on the top of the rubber ring (18). Both the rubber ring (18) and the rubber pad (19) have vertically arranged wire grooves at their centers, and the diameter of the wire grooves is smaller than the diameter of the power cord.

5. The waterproof and explosion-proof lamp according to claim 4, characterized in that, The light source (4) includes a fixing plate (41) and a component box (42). The fixing plate (41) is installed in the bottom groove of the mounting plate (11) by screws. The component box (42) is fixedly installed on the top of the fixing plate (41). Several LED beads are evenly distributed on the bottom of the fixing plate (41). The component box (42) is equipped with components to ensure the normal operation of the LED beads. The top of the component box (42) is provided with a round hole.

6. The waterproof and explosion-proof lamp according to claim 5, characterized in that, The radiator (5) is located inside the heat sink (12) and is mounted on the top of the component box (42) by screws. The heat-conducting fins of the radiator (5) are in contact with the inner wall of the heat sink (12), and a through-hole is provided at the center of the radiator (5).

7. The waterproof and explosion-proof lamp according to any one of claims 1-6, characterized in that, A protective steel mesh (6) is fixedly welded to the bottom of the lampshade (2).

Images