Improved explosion-proof lamp

Abstract

The application relates to the technical field of lamps, and discloses an improved explosion-proof lamp, which comprises a mounting frame, a micro explosion-proof motor is fixed in the bottom end of the mounting frame, an output shaft of the micro explosion-proof motor is fixed with a rotating disc, a buffer pad is fixed at the top of the rotating disc, a lamp assembly for illumination is arranged at the top of the buffer pad, an explosion-proof frame is fixed on the surface of the side edge of the rotating disc, a transverse guardrail is fixed on the surface of the explosion-proof frame, and one side of the top end of the explosion-proof frame. The improved explosion-proof lamp is characterized in that the micro explosion-proof motor drives the clamping frame to rotate around the top shell through the limiting block, the push rod repeatedly contacts the extension plate, the push rod drives the extension plate to move towards the explosion-proof lamp shell, the extension plate drives the sliding support and the bottom scraping piece to move, the extension plate drives the top scraping piece to move towards the longitudinal heat dissipation fin, the longitudinal heat dissipation fin and the transverse heat dissipation fin are cleaned through the top scraping piece and the bottom scraping piece, and the heat dissipation efficiency of the improved explosion-proof lamp is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lamps, in particular to an improved explosion-proof lamp. BACKGROUND

[0002] The explosion-proof lamp is a special lighting device designed for flammable and explosive environment, and its core function is to prevent sparks, arcs or high temperature generated inside the lamp due to faults (such as circuit short circuit, light source high temperature) from igniting flammable and explosive substances (such as gas, dust, flammable and explosive gas, etc.) in the surrounding environment, so as to avoid explosion or fire accident.

[0003] In order to ensure the explosion-proof performance of the explosion-proof lamp, a closed structure is usually adopted, and the closed structure will hinder heat dissipation. In order to avoid opening holes and protect the sealing of the explosion-proof lamp, heat dissipation fins are usually arranged on the explosion-proof lamp to transfer the heat inside the lamp to the outside. However, when the explosion-proof lamp is applied in coal mines and other areas with serious dust or high humidity, the dust will adhere to the surface of the heat dissipation fins under the action of humidity, resulting in a decrease in the heat dissipation efficiency of the heat dissipation fins. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an improved explosion-proof lamp which solves the problems raised in the background art.

[0005] The present application provides the following technical scheme: an improved explosion-proof lamp, comprising a mounting frame, a micro explosion-proof motor is fixed inside the bottom end of the mounting frame, an output shaft of the micro explosion-proof motor is fixed with a rotating disc, a buffer pad is fixed on the top of the rotating disc, and a lamp assembly for lighting is arranged on the top of the buffer pad;

[0006] A explosion-proof frame is fixed on the surface of the side edge of the rotating disc, a horizontal guardrail is fixed on the surface of the explosion-proof frame, a buckling frame is hingedly connected on one side of the top end of the explosion-proof frame through locking bolts, a limiting block is fixed on the surface of the side close to the micro explosion-proof motor of the buckling frame, and a push rod is fixed on the top of the buckling frame.

[0007] The lamp assembly comprises a top shell, and a horizontal heat dissipation fin is fixed on the top of the top shell.

[0008] A sliding support is slidably connected to the surface of the horizontal heat dissipation fin, a bottom wiper is fixed in the sliding support, and the bottom wiper is slidably connected with the horizontal heat dissipation fin.

[0009] Optionally, a damper is fixed on the bottom of the top end of the mounting frame.

[0010] Optionally, the lighting assembly further includes an explosion-proof lamp housing, which is snapped onto the top of the buffer pad. An explosion-proof lamp is fixed inside the explosion-proof lamp housing, and a temperature sensor is fixed on the surface of the explosion-proof lamp. A top shell is threaded onto the top surface of the explosion-proof lamp housing, and an annular groove is formed on the surface of the top shell, with a limiting block slidably connected to the annular groove.

[0011] Optionally, an explosion-proof cover is fixed to the top of the top shell, longitudinal heat dissipation fins are fixed to the surface of the explosion-proof cover, and a top cover is fixed to the top of the explosion-proof cover by bolts, and the top of the top cover is fixed to one end of the damper.

[0012] Optionally, a spring is fixed to the surface of the bottom scraper near the explosion-proof cover, and one end of the spring is fixed to the explosion-proof cover. An extension plate is fixed to the top of the sliding bracket, and a top scraper is fixed to the top of the extension plate. The top scraper is slidably connected to the longitudinal heat dissipation fins.

[0013] Optionally, the push rod is inclined, the two ends of the extension plate away from the explosion-proof cover are arc-shaped, and the running trajectory of the push rod contacts the extension plate.

[0014] Optionally, a cleaning component is provided on the surface of the explosion-proof frame near the explosion-proof lamp housing, and the cleaning component is in contact with the surface of the explosion-proof lamp housing.

[0015] Optionally, the surface of the explosion-proof cover is provided with a slot, and a vent pipe is slidably and sealed inside the slot. The end of the vent pipe near the extension plate is fixed to the extension plate.

[0016] Optionally, the surface of the vent pipe near the explosion-proof cover has a built-in air port, and the surface of the vent pipe near the extension plate has an external air port.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This improved explosion-proof lamp uses a miniature explosion-proof motor to drive the locking frame, which in turn drives the limiting block to rotate around the top shell. This causes the push rod to repeatedly contact the extension plate, pushing the extension plate towards the explosion-proof lamp housing. The extension plate then drives the sliding bracket and the bottom scraper to move along the transverse heat dissipation fins towards the explosion-proof lamp housing. The extension plate also drives the top scraper to move towards the longitudinal heat dissipation fins. The top and bottom scrapers clean the longitudinal and transverse heat dissipation fins respectively, thus improving the heat dissipation efficiency of this invention.

[0019] 2、The improved explosion-proof lamp, through the extension plate drives the ventilation pipe repeatedly inserts and ejects in the inside of the slot, makes the built-in air port and the external air port is sealed by the slot alternately, in the alternate sealing process, the hot air in the top shell enters the ventilation pipe through the built-in air port, and is discharged to the outside through the external air port, while the outside air enters the ventilation pipe through the external air port, and is discharged to the top shell through the built-in air port, so that the top shell is not communicated with the outside, and the heat exchange with the outside air is completed, the heat dissipation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structural schematic diagram of the present application;

[0021] Figure 2 It is the structural schematic diagram of the explosion-proof lamp shell, the explosion-proof lamp and the top shell of the present application;

[0022] Figure 3 It is the structural schematic diagram of the lamp assembly of the present application;

[0023] Figure 4 It is the structural sectional view of the explosion-proof frame and the buckling frame of the present application;

[0024] Figure 5 It is the structural sectional view of the lamp assembly of the present application;

[0025] Figure 6 It is the schematic diagram of the position relation of the transverse heat dissipation fin and the sliding support of the present application;

[0026] Figure 7 It is the schematic diagram of the position relation of the sliding support and the bottom wiper of the present application;

[0027] Figure 8 It is the structural schematic diagram of the extension plate and the top wiper of the present application.

[0028] In the drawing: 1, mounting frame;11, damper;2, miniature explosion-proof motor;21, rotating disc;22, buffer pad;23, explosion-proof frame;231, locking bolt;24, transverse guardrail;25, buckling frame;26, limit block;27, push rod;3, explosion-proof lamp shell;31, explosion-proof lamp;32, temperature sensor;33, top shell;34, annular groove;35, transverse heat dissipation fin;36, explosion-proof cover;37, longitudinal heat dissipation fin;38, top cover;4, sliding support;41, bottom wiper;42, spring;43, extension plate;5, top wiper;6, slot;61, ventilation pipe;62, built-in air port;63, external air port. DETAILED DESCRIPTION

[0029] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the present application.

[0030] Embodiment one: please refer to Figures 1-8 An improved explosion-proof lamp, comprising a mounting frame 1, a micro explosion-proof motor 2 is fixedly arranged in the bottom end of the mounting frame 1, an output shaft of the micro explosion-proof motor 2 is fixedly arranged with a rotating disc 21, a buffer pad 22 is fixedly arranged on the top of the rotating disc 21, a lamp assembly for lighting is arranged on the top of the buffer pad 22, an explosion-proof frame 23 is fixedly arranged on the surface of the side of the rotating disc 21, a transverse guardrail 24 is fixedly arranged on the surface of the explosion-proof frame 23, a buckling frame 25 is hingedly arranged on one side of the top end of the explosion-proof frame 23 through a locking bolt 231, a limiting block 26 is fixedly arranged on the surface of the side of the buckling frame 25 close to the micro explosion-proof motor 2, and a push rod 27 is fixedly arranged on the top of the buckling frame 25.

[0031] The lamp assembly comprises a top shell 33, transverse heat dissipation fins 35 are fixedly arranged on the top of the top shell 33, a sliding support 4 is slidingly connected to the surface of the transverse heat dissipation fins 35, a bottom wiper 41 is fixedly arranged in the sliding support 4, and the bottom wiper 41 is slidingly connected to the transverse heat dissipation fins 35, a damper 11 is fixedly arranged at the bottom of the top end of the mounting frame 1, the lamp assembly further comprises an explosion-proof lamp shell 3, the explosion-proof lamp shell 3 is clamped on the top of the buffer pad 22, an explosion-proof lamp 31 is fixedly arranged in the explosion-proof lamp shell 3, a temperature sensor 32 is fixedly arranged on the surface of the explosion-proof lamp 31, the top shell 33 is threadedly connected to the surface of the top end of the explosion-proof lamp shell 3, an annular groove 34 is formed in the surface of the top shell 33, and the limiting block 26 is slidingly connected to the annular groove 34.

[0032] A explosion-proof cover 36 is fixedly arranged on the top of the top shell 33, longitudinal heat dissipation fins 37 are fixedly arranged on the surface of the explosion-proof cover 36, a top cover 38 is fixedly arranged on the top of the explosion-proof cover 36 through bolts, one end of the top cover 38 is fixedly arranged with the damper 11, a spring 42 is fixedly arranged on the surface of the side of the bottom wiper 41 close to the explosion-proof cover 36, one end of the spring 42 is fixedly arranged with the explosion-proof cover 36, an extension plate 43 is fixedly arranged on the top of the sliding support 4, a top wiper 5 is fixedly arranged on the top of the extension plate 43, the top wiper 5 is slidingly connected to the longitudinal heat dissipation fins 37, the push rod 27 is arranged in an inclined manner, both ends of the extension plate 43 away from the explosion-proof cover 36 are arranged in an arc shape, and the running track of the push rod 27 is in contact with the extension plate 43.

[0033] In actual operation, first, the lamp assembly is placed inside the explosion-proof frame 23, the bottom of the explosion-proof lamp shell 3 is clamped on the top of the buffer pad 22, then each buckle frame 25 is turned over, the buckle frame 25 drives the limiting block 26 to turn over, the limiting block 26 is clamped inside the annular groove 34, the top shell 33 is preliminarily limited, and the buckle frame 25 is attached to the outside of the top shell 33, then the explosion-proof frame 23 and the buckle frame 25 are locked by the locking bolt 231, then the damper 11 is fixed with the top cover 38 by the bolt, so that the entire lamp assembly is fixed on the top of the buffer pad 22, then the mounting frame 1 is fixed on the mine wall by the bolt, thereby completing the fixing of the application;

[0034] Specifically, when the lighting of the application is needed, the explosion-proof lamp 31 is started by the controller, the explosion-proof lamp 31 is illuminated, and the temperature of the explosion-proof lamp 31 is monitored by the temperature sensor 32. In the process of long-term lighting, dust will adhere to the surface of the transverse heat dissipation fins 35 and the longitudinal heat dissipation fins 37. Therefore, the micro explosion-proof motor 2 is started by the controller, the rotating disc 21 and the buffer pad 22 are driven to rotate by the micro explosion-proof motor 2, the explosion-proof frame 23 and the buckle frame 25 are driven to rotate by the rotating disc 21, and the buckle frame 25 rotates around the explosion-proof lamp shell 3, that is, the micro explosion-proof motor 2 drives the buckle frame 25 to rotate around the explosion-proof lamp shell 3.

[0035] During the rotation of the buckle frame 25, the surface thereof is in contact with the surface of the arc-shaped portion of the transverse heat dissipation fins 35, thereby scraping the arc-shaped portion of the transverse heat dissipation fins 35. At the same time, the buckle frame 25 drives the push rod 27 to rotate around the explosion-proof cover 36 during the rotation of the buckle frame 25. The push rod 27 gradually approaches the extension plate 43 during the rotation, until the push rod 27 contacts the extension plate 43, thereby pushing the extension plate 43, and the extension plate 43 drives the sliding support 4 and the bottom scraper 41 to slide along the surface of the transverse heat dissipation fins 35, so that the sliding support 4 drives the bottom scraper 41 to move towards the top shell 33. The bottom scraper 41 scrapes the surfaces on both sides of the transverse heat dissipation fins 35 during the movement, thereby cleaning the surface of the transverse heat dissipation fins 35, avoiding the adhesion of dust on the surface of the transverse heat dissipation fins 35, avoiding the dust from hindering the heat dissipation of the transverse heat dissipation fins 35, and thereby improving the heat dissipation efficiency of the transverse heat dissipation fins 35.

[0036] Meanwhile, when the extension plate 43 moves towards the top shell 33, the extension plate 43 drives the top wiper 5 to move towards the longitudinal heat dissipation fins 37, until the top wiper 5 is sleeved on the outside of the longitudinal heat dissipation fins 37 and performs the scraping operation on the surface of the longitudinal heat dissipation fins 37, thereby cleaning the surface of the longitudinal heat dissipation fins 37, so that the dust on the surface of the longitudinal heat dissipation fins 37 and the transverse heat dissipation fins 35 is removed, thereby ensuring that the lamp assembly improves the heat dissipation efficiency of the transverse heat dissipation fins 35 and the longitudinal heat dissipation fins 37 without damaging the sealing property, thereby improving the explosion-proof performance of the present application.

[0037] Further, in the process of rotating the push rod 27, the push rod 27 slowly pushes the extension plate 43 to drive the sliding support 4 and the bottom wiper 41 to move along the transverse heat dissipation fins 35 towards the top shell 33, until the sliding support 4 abuts against the top shell 33, the distance of the push rod 27 pushing the extension plate 43 reaches the maximum stroke, at this time, the push rod 27 maintains the rotating state, the push rod 27 gradually moves away from the extension plate 43 until the extension plate 43 is reset under the elastic force of the spring 42, the reset extension plate 43 drives the sliding support 4 and the bottom wiper 41 to reset along the transverse heat dissipation fins 35, in the process of resetting the bottom wiper 41, the transverse heat dissipation fins 35 are cleaned again, and the next push rod 27 is pushed.

[0038] It should be noted that all the devices of the present application are controlled by the controller, in order to avoid that the force of the push rod 27 contacting the extension plate 43 is too large and too much, the rotating speed of the micro explosion-proof motor 2 is controlled at five to ten revolutions per minute, and when the micro explosion-proof motor 2 is not started, the explosion-proof frame 23, the transverse guardrail 24 and the buckling frame 25 serve as the explosion-proof structure and protect the explosion-proof lamp shell 3.

[0039] In the embodiment one, the surface of the explosion-proof frame 23 close to the explosion-proof lamp shell 3 is provided with a cleaning piece, and the cleaning piece is in contact with the surface of the explosion-proof lamp shell 3; when the explosion-proof lamp shell 3 is used for a long time in the mine, not only the transverse heat dissipation fins 35 and the longitudinal heat dissipation fins 37 are easy to adhere to the dust, but also the surface of the explosion-proof lamp shell 3 is easy to adhere to the dust, in the process of the operation of the embodiment one, when the micro explosion-proof motor 2 drives the buckling frame 25 to drive the push rod 27 to rotate around the explosion-proof lamp shell 3, the buckling frame 25 drives the cleaning piece to rotate around the explosion-proof lamp shell 3, and the cleaning piece is in contact with the surface of the explosion-proof lamp shell 3, so that when the micro explosion-proof motor 2 is started, the micro explosion-proof motor 2 can drive the cleaning piece to clean the surface of the explosion-proof lamp shell 3, in the actual use, the cleaning piece includes soft hair clusters, cleaning strips and the like.

[0040] Therefore, the present application avoids dust adhering to the surface of the explosion-proof lamp shell 3, affecting the light transmittance, and avoids dust hindering the heat dissipation of the explosion-proof lamp shell 3, thereby improving the efficiency of heat transfer from the inside of the explosion-proof lamp shell 3 to the outside.

[0041] It should be noted that the buckling frame 25 is provided with a plurality of, and the cleaning piece is only arranged on the surface of one of the buckling frames 25, wherein the explosion-proof lamp shell 3 is composed of two parts of a threaded interface and a lampshade, and the cleaning piece only contacts the lampshade part of the explosion-proof lamp shell 3 and is clamped on the top of the buffer pad 22, which is the lampshade part of the explosion-proof lamp shell 3.

[0042] In the third embodiment, the surface of the explosion-proof cover 36 is provided with a slot 6, the slot 6 is slidably connected with a ventilation pipe 61 inside, the ventilation pipe 61 is fixed to the extension plate 43 near one end, the surface of the ventilation pipe 61 near the extension plate 43 is provided with an internal air port 62, and the surface of the ventilation pipe 61 near the extension plate 43 is provided with an external air port 63.

[0043] Specifically, on the basis of the first embodiment, when the push rod 27 pushes the extension plate 43 to drive the sliding bracket 4 to move towards the top shell 33, the sliding bracket 4 drives the extension plate 43 and the top wiper 5 to move towards the longitudinal heat dissipation fin 37, thereby causing the extension plate 43 to drive the ventilation pipe 61 to slide inside the slot 6, and causing the ventilation pipe 61 to be inserted into the inside of the explosion-proof cover 36.

[0044] Since the surface of the ventilation pipe 61 is provided with an internal air port 62 near the explosion-proof cover 36, and an internal air port 62 near the extension plate 43, referring to the drawings Figure 6 When the push rod 27 is not in contact with the extension plate 43, the extension plate 43 that is not in contact with the push rod 27 is in a prohibited state, that is, the slot 6 is in an externally extended state, at this time the external air port 63 is exposed to the air, and the external air enters the inside of the ventilation pipe 61 through the external air port 63, at this time the internal air port 62 is located inside the slot 6 and is sealed by the slot 6, so the external air is stored in the inside of the ventilation pipe 61.

[0045] When the push rod 27 is in contact with the extension plate 43, the extension plate 43 is driven by the push rod 27 to push the ventilation pipe 61 to be inserted into the inside of the explosion-proof cover 36, at this time the internal air port 62 extends from the inside of the slot 6 to the inside of the explosion-proof cover 36, and the external air port 63 enters the inside of the slot 6 and is sealed by the slot 6, and the internal air port 62 that extends into the inside of the explosion-proof cover 36 loses the sealing of the slot 6, and the air stored in the inside of the ventilation pipe 61 is released into the inside of the explosion-proof cover 36.

[0046] Further, the application can transport the air outside into the inside of the explosion-proof cover 36 without communicating with the outside, and then complete heat exchange, reduce the heat inside the explosion-proof cover 36, and further improve the heat dissipation effect of the application.

[0047] Further, when the push rod 27 is out of contact with the extension plate 43, the extension plate 43 is reset under the elastic force of the spring 42, at this time, the extension plate 43 drives the air pipe 61 to be pushed out from the inside of the insertion slot 6, in the process of the air pipe 61 being pushed out, the hot air in the explosion-proof cover 36 enters the inside of the air pipe 61 through the built-in air port 62, in the process of the insertion slot 6 continuously being pushed out, the built-in air port 62 is sealed by the insertion slot 6 again, and the external air port 63 is pushed out from the inside of the insertion slot 6 and separated from the sealing of the insertion slot 6, and is in communication with the outside again, and then the air pipe 61 takes the hot air in the explosion-proof cover 36 away from the inside of the explosion-proof cover 36, and discharges it to the outside through the external air port 63.

[0048] When the miniature explosion-proof motor 2 continuously operates, that is, each push rod 27 repeatedly pushes each extension plate 43 periodically, the extension plate 43 drives the air pipe 61 to move repeatedly in the inside of the insertion slot 6, thereby making the explosion-proof cover 36 transport the hot air in the explosion-proof cover 36 to the outside without communicating with the outside, and bringing the normal temperature air from the outside into the explosion-proof cover 36 through the air pipe 61, strengthening the heat exchange of the air in the explosion-proof cover 36, and further improving the heat dissipation efficiency of the application.

[0049] Further, when the extension plate 43 repeatedly approaches and moves away from the longitudinal heat dissipation fin 37 under the driving of the push rod 27, the extension plate 43 plays a role of disturbing the air around the explosion-proof cover 36, so that the hot air discharged from the explosion-proof cover 36, and the heat transferred by the horizontal heat dissipation fin 35 and the longitudinal heat dissipation fin 37, can quickly complete heat exchange with the normal temperature air around the application, avoid the hot air staying around the explosion-proof cover 36 for a long time, make the normal temperature air enter the inside of the explosion-proof cover 36 stably, and further improve the heat dissipation efficiency of the application.

[0050] Although the embodiments of the application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An improved explosion-proof light, comprising a mounting bracket (1), characterized in that: The mounting bracket (1) has a miniature explosion-proof motor (2) fixed inside its bottom end. The output shaft of the miniature explosion-proof motor (2) is fixed with a turntable (21). The top of the turntable (21) is fixed with a buffer pad (22). The top of the buffer pad (22) is provided with a lighting fixture assembly. An explosion-proof frame (23) is fixed to the side surface of the turntable (21), and a horizontal guardrail (24) is fixed to the surface of the explosion-proof frame (23). A fastening frame (25) is hinged to one side of the top of the explosion-proof frame (23) by a locking bolt (231). A limit block (26) is fixed to the surface of the fastening frame (25) near the micro explosion-proof motor (2), and a push rod (27) is fixed to the top of the fastening frame (25). The lighting assembly includes a top shell (33), a horizontal heat dissipation fin (35) fixed to the top of the top shell (33), and an explosion-proof cover (36) fixed to the top of the top shell (33). The surface of the transverse heat dissipation fins (35) is slidably connected to a sliding bracket (4), and a bottom scraper (41) is fixed inside the sliding bracket (4). The bottom scraper (41) is slidably connected to the transverse heat dissipation fins (35), and an extension plate (43) is fixed to the top of the sliding bracket (4). The push rod (27) is inclined, and the two ends of the extension plate (43) on the side away from the explosion-proof cover (36) are arc-shaped, and the running trajectory of the push rod (27) is in contact with the extension plate (43).

2. The improved explosion-proof lamp according to claim 1, characterized in that: A damper (11) is fixed to the bottom of the top of the mounting bracket (1).

3. The improved explosion-proof lamp according to claim 1, characterized in that: The lighting assembly also includes an explosion-proof lamp housing (3), which is snapped onto the top of a buffer pad (22). An explosion-proof lamp (31) is fixed inside the explosion-proof lamp housing (3), and a temperature sensor (32) is fixed on the surface of the explosion-proof lamp (31). A top shell (33) is threaded onto the top surface of the explosion-proof lamp housing (3), and an annular groove (34) is provided on the surface of the top shell (33). A limiting block (26) is slidably connected to the annular groove (34).

4. The improved explosion-proof lamp according to claim 2, characterized in that: The explosion-proof cover (36) has longitudinal heat dissipation fins (37) fixed on its surface. The top of the explosion-proof cover (36) is fixed with a top cover (38) by bolts. The top of the top cover (38) is fixed to one end of the damper (11).

5. The improved explosion-proof lamp according to claim 4, characterized in that: A spring (42) is fixed to the surface of the bottom scraper (41) near the explosion-proof cover (36), and one end of the spring (42) is fixed to the explosion-proof cover (36). A top scraper (5) is fixed to the top of the extension plate (43), and the top scraper (5) is slidably connected to the longitudinal heat dissipation fins (37).

6. The improved explosion-proof lamp according to claim 1, characterized in that: The explosion-proof frame (23) has a cleaning component on the surface near the explosion-proof lamp housing (3), and the cleaning component is in contact with the surface of the explosion-proof lamp housing (3).

7. The improved explosion-proof lamp according to claim 1, characterized in that: The surface of the explosion-proof cover (36) is provided with a slot (6), and the interior of the slot (6) is connected to a vent pipe (61) in a sliding seal. The end of the vent pipe (61) near the extension plate (43) is fixed to the extension plate (43).

8. The improved explosion-proof lamp according to claim 7, characterized in that: The surface of the vent pipe (61) near the explosion-proof cover (36) has an internal air port (62), and the surface of the vent pipe (61) near the extension plate (43) has an external air port (63).

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