A variable function combination lamp for high-risk environments

Abstract

The utility model relates to the technical field of lighting equipment, and in particular to a variable function combination lamp for high-risk environments, comprising a lamp body and a power cavity cover, wherein the lamp body and the power cavity cover are connected by a hinge structure on one side; a threaded hole for mounting a hanger is arranged in the middle of the top of the power cavity cover; U-shaped bracket mounting holes are symmetrically arranged on both sides of the top of the power cavity cover; ceiling ear brackets extending outward from the power cavity cover are symmetrically arranged on the other two sides of the top of the power cavity cover, and ceiling mounting holes are arranged on both ceiling ear brackets; wall mounting holes are symmetrically arranged on the top of the power cavity cover. The utility model can realize the free combination of the same lamp with a variety of mounting accessories through the top power cavity cover, without replacing the lamp housing, and is easy to operate and construct, convenient for use in different scenes, simple to maintain due to its integrity, and low cost.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting equipment, in particular to a variable function combined lamp used in high-risk environments. Background Art

[0002] As a special field of industrial lighting, LED explosion-proof lamps use solid-state cold light sources, which have the advantages of high electro-optical conversion efficiency, low heat generation, long service life, and environmental protection. They have now become the leading lighting products. LED explosion-proof lamps are suitable for dangerous places where flammable gases and dust exist. They can prevent the arc, sparks and high temperatures that may be generated inside the lamps from igniting flammable gases and dust in the surrounding environment, thereby meeting the technical requirements of explosion-proof. At present, with the rapid development of industries such as petroleum, chemical, coal mining, and food, LED explosion-proof lamps are increasingly used in production, warehousing, and transportation. The research and development and application of LED explosion-proof lamps have attracted the attention and attention of managers in various industries.

[0003] In order to meet the requirements of sealed explosion-proof performance and be subject to temperature rise restrictions of key components, the LED explosion-proof lamps in the existing technology have a relatively compact structure design, a single structure installation, inflexible on-site installation, low overall lamp power, low overall lighting effect, and low usable ambient temperature. They are not convenient for the use, installation, inspection and maintenance of LED explosion-proof lamps in multiple scenarios, and have certain defects.

[0004] The current explosion-proof lamps on the market have a single installation mode and limited application scenarios, which cannot meet the multi-purpose use requirements of customers on site. The market urgently needs explosion-proof lamps with multiple installation modes, simple combination with emergency modules; multiple installation modes for single lamps; and multiple installation modes combined with emergency modules. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide a variable function combination lamp for high-risk environments. It can realize the free combination of the same lamp with a variety of installation accessories through the top power cavity cover, without replacing the lamp housing, easy to operate and construct, convenient for use in different scenes, simple maintenance and low cost.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A variable function combination lamp for high-risk environments, comprising a lamp body and a power cavity cover, wherein the lamp body and one side of the power cavity cover are connected by a hinge structure; a hanger mounting threaded hole is arranged in the middle of the top of the power cavity cover; U-shaped bracket mounting holes are symmetrically arranged on both sides of the top of the power cavity cover; ceiling ear brackets extending outward from the power cavity cover are symmetrically arranged on the other two sides of the top of the power cavity cover, and ceiling mounting holes are arranged on both ceiling ear brackets; wall mounting holes are symmetrically arranged on the top of the power cavity cover.

[0008] As a preferred solution of the variable function combination lamp for high-risk environments described in the utility model, a hoist, a lifting ring or a hook is installed on the hanger mounting threaded hole and locked with a fastening screw; the hanger mounting threaded hole is an internal thread structure, and the lower end of the hoist, the lifting ring or the hook is an external thread structure.

[0009] As a preferred solution of the variable function combination lamp for high-risk environments described in the utility model, a U-shaped mounting bracket is installed on the U-shaped bracket mounting hole, the U-shaped mounting bracket includes an L-shaped fixing bracket and a U-shaped connecting bracket, the fixed connecting bracket includes a fixed base plate and a side plate, the fixed base plate is fixed to the power cavity cover by screws and the U-shaped bracket mounting hole, and the side plate and the U-shaped connecting bracket are rotatably connected by bolts.

[0010] As a preferred solution of the variable function combination lamp for high-risk environments described in the utility model, the top of the U-shaped connecting bracket is provided with a U-shaped clamp for clamping and fixing the installation on the pole or a pole-mounted bracket for installing on the top of the pole.

[0011] As a preferred solution of the variable function combination lamp for high-risk environments described in the utility model, one of the ceiling mounting holes on the two ceiling ear brackets is set as a waist-shaped hole, and the other is set as a circular hole.

[0012] As a preferred solution of the variable function combination lamp for high-risk environments described in the utility model, a wall mounting bracket is installed on the wall mounting hole; and a buckle for temporary load bearing and limiting is arranged on the top of the power cavity cover.

[0013] As a preferred solution of the variable function combination lamp for high-risk environments described in the utility model, the wall-mounted mounting bracket includes a horizontally arranged wall-mounted bracket, a wall-mounted bracket mounting plate arranged at the front end of the wall-mounted bracket, and a wall-mounted junction box device arranged at the rear end of the wall-mounted bracket; the wall-mounted bracket mounting plate is fixedly installed on the top of the power cavity cover, and a sealing ring is arranged between the wall-mounted bracket mounting plate and the power cavity cover.

[0014] As a preferred solution of the variable function combination lamp for high-risk environments described in the utility model, an emergency junction box is fixedly installed on the top of the power cavity cover through a connecting piece; a junction box hanger mounting hole is provided in the middle of the top of the emergency junction box; two junction box ceiling mounting holes are respectively provided on both sides of the top of the emergency junction box; and junction box U-shaped bracket mounting holes are provided at both ends of the emergency junction box.

[0015] As a preferred solution of the variable function combination lamp for high-risk environments described in the utility model, both ends of the connecting piece are provided with external threads, and the external threads at both ends of the connecting piece are respectively connected to the internal threaded hole in the middle of the power cavity cover and the internal threaded hole at the bottom of the emergency junction box.

[0016] As a preferred solution of the variable function combination lamp for high-risk environments described in the utility model, junction box ceiling brackets are respectively installed on the junction box ceiling mounting holes on both sides of the emergency junction box; waist-shaped mounting holes are provided at both ends of the junction box ceiling brackets.

[0017] Compared with the prior art, the beneficial effects of the utility model are: the utility model adopts an integrated functional power cavity cover combined with various types of installation accessories to achieve multi-scene use, without replacing the lamp housing, easy construction, convenient use in different scenes, simple maintenance and low cost.

[0018] The lighting module and the emergency junction box module can be freely combined, and the junction box can be freely combined with a variety of installation accessories, which is convenient for use in different scenarios and reduces manual maintenance costs.

[0019] (1) The housing of the lamp of the utility model is explosion-proof, waterproof and dustproof, and the power cavity cover integrates multiple installation methods: hanging, U-shaped bracket, ceiling, wall, pole, hoop, ring, hook and pole mounting.

[0020] (2) The housing of the lamp of the utility model is explosion-proof, waterproof and dustproof, and emergency-proof. The emergency junction box integrates multiple installation methods: hanging, U-shaped bracket, ceiling, clamp, ring, hook and pole mounting.

[0021] (3) The function of the utility model lamp is variable: it can be used as a single lamp or in combination with an emergency junction box; different explosion-proof lamp modules and different explosion-proof emergency modules can be freely combined, and the emergency junction box provides unified external AC power access and outgoing line services, which is easy to operate and construct. The emergency junction box has a variety of installation methods, which is convenient for use in different scenarios. The integration is simple to maintain and the cost is low. It is also easy to use, install, inspect and maintain the LED explosion-proof lamp in multiple scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following will briefly introduce the drawings required for the specific implementation or the prior art description. Obviously, the drawings described below are some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 The schematic diagram of the power cavity cover structure of the utility model Figure 1 .

[0025] Figure 3 The schematic diagram of the power cavity cover structure of the utility model Figure 2 .

[0026] Figure 4 It is a structural schematic diagram of the hoisting installation method of the utility model.

[0027] Figure 5 It is a structural schematic diagram of the installation method of the lifting ring of the utility model.

[0028] Figure 6 It is a structural schematic diagram of the installation method of the hook of the utility model.

[0029] Figure 7 It is a schematic diagram of the installation structure of the U-shaped mounting bracket of the utility model.

[0030] Figure 8 This is a schematic diagram of the U-shaped mounting bracket structure of the utility model.

[0031] Fig. 9 It is a schematic diagram of the structure of the pole-mounted installation method of the utility model.

[0032] Fig.10 It is a structural schematic diagram of the ceiling installation method of the utility model.

[0033] Fig.11 It is a schematic diagram of the structure of the wall-mounted installation method of the utility model.

[0034] Fig.12 It is a schematic diagram of the structure of the wall-mounted mounting bracket of the utility model.

[0035] Fig.13 It is a schematic diagram of the buckle structure of the utility model.

[0036] Fig.14 This is a schematic diagram of the structure of the installation method of the emergency junction box of the utility model.

[0037] Fig.15 This is a schematic diagram of the structure of the emergency junction box of the utility model.

[0038] Fig.16 This is a schematic diagram of the structure of the ceiling bracket of the junction box of the utility model.

[0039] Fig.17 This is a schematic diagram of the installation structure of the lifting ring and the adapter of the utility model.

[0040] Fig.18 This is a schematic diagram of the installation structure of the hook and adapter of the utility model.

[0041] Fig.19 This is a schematic diagram of the structure of the connecting piece of the utility model.

[0042] Fig. 20 This is a schematic diagram of the structure of the threaded rod mounting bracket of the utility model.

[0043] Fig.21 The utility model is a schematic diagram of the installation structure of the threaded rod mounting bracket and the wall mounting bracket Figure 1 .

[0044] Fig. 22 The utility model is a schematic diagram of the installation structure of the threaded rod mounting bracket and the wall mounting bracket Figure 2 .

[0045] Numbers in the figure: 1, lamp body; 2, power cavity cover; 21, threaded hole for hanging fitting installation; 22, U-shaped bracket installation hole; 23, ceiling ear bracket; 23-1, ceiling installation hole; 24, wall installation hole, 25, reinforcing rib; 3. Fastening screws; 4. U-shaped mounting bracket; 41. L-shaped fixing bracket; 41-1. Fixed bottom plate; 41-2. Side plate; 42. U-shaped connecting bracket; 43. Pole-mounted bracket; 44. U-shaped clamp; 5. Wall-mounted mounting bracket; 51. Wall-mounted bracket; 52. Wall-mounted bracket mounting plate; 53. Wall-mounted junction box device; 6. Buckle; 7. Sealing ring; 8. Connector; 9. Emergency junction box; 91. Junction box hanger mounting hole; 92. Junction box ceiling mounting hole; 93. Junction box U-shaped bracket mounting hole; 10. Junction box ceiling bracket; 101. Waist-shaped mounting hole; 20. Hinge structure; 30. Adapter; 30-1. Serrated gasket; 40. Connector; 40-1. Lateral connecting plate; 40-2. Horizontal connecting plate; 50. Threaded rod-mounted bracket. DETAILED DESCRIPTION

[0046] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0047] Example

[0048] Reference Figure 1-22 , which is the first embodiment of the utility model. This embodiment provides a variable function combination lamp for high-risk environments. It adopts an integrated function power cavity cover combined with various types of installation accessories to achieve multi-scene use. There is no need to replace the lamp housing, which is easy to operate and construct, convenient for use in different scenes, simple maintenance and low cost.

[0049] The lighting module and the emergency junction box module can be freely combined, and the junction box can be freely combined with a variety of installation accessories, which is convenient for use in different scenarios and reduces manual maintenance costs.

[0050] Specifically, Figure 1-3As shown, it includes a lamp body 1 and a power cavity cover 2, and one side of the lamp body 1 and the power cavity cover 2 is connected by a hinge structure 20; a threaded hole 21 for mounting a hanging part is arranged in the middle of the top of the power cavity cover 2; U-shaped bracket mounting holes 22 are symmetrically arranged on both sides of the top of the power cavity cover 2; ceiling ear brackets 23 extending outward from the power cavity cover 2 are symmetrically arranged on the other two sides of the top of the power cavity cover 2, and ceiling mounting holes 23-1 are arranged on both ceiling ear brackets 23; wall mounting holes 24 are symmetrically arranged on the top of the power cavity cover 2. Thin-walled network reinforcing ribs 25 are arranged inside the power cavity cover 2.

[0051] Preferably, Figure 4-6 As shown, the hanging piece installation threaded hole 21 is installed with a hanging device, a hanging ring or a hanging hook and is locked with a fastening screw 3; the hanging piece installation threaded hole 21 is an internal thread structure, and the lower end of the hanging device, the hanging ring or the hanging hook is an external thread structure. As shown, five interface threaded holes are arranged on the top and around the lamp power cavity cover 2, and the thread specification can be NPT3 / 4" or M25X1.5.

[0052] like Fig.17 , 18 As shown, the lifting ring or hook is connected to the power cavity cover 2 through an adapter 30, a serrated gasket 30-1 is provided at the upper end of the adapter 30, and an external thread is provided at the lower end of the adapter 30; the connector 30 is provided with a through hole for the wire to pass through.

[0053] Preferably, Figure 7-9 As shown, the U-shaped mounting bracket 4 is installed on the U-shaped bracket mounting hole 22, and the U-shaped mounting bracket 4 includes an L-shaped fixed bracket 41 and a U-shaped connecting bracket 42. The fixed connecting bracket 41 includes a fixed bottom plate 41-1 and a side plate 41-2. The fixed bottom plate 41-1 is fixed to the power cavity cover 2 through screws and the U-shaped bracket mounting hole 22, and the side plate 41-2 and the U-shaped connecting bracket 42 are rotatably connected by bolts. The rotation angle is realized: 3 X 30° = 90°. After the U-shaped connecting bracket 42 and the L-shaped fixed bracket 41 are combined, the angle position is locked using a fastening screw. The top of the U-shaped connecting bracket 42 is provided with a U-shaped clamp 44 for clamping the pole for installation or a pole-mounted bracket 43 for mounting on the top of the pole. The clamp spacing size is 48mm or 60mm. The diameter of the rod is 40mm, 50mm or 60mm. There is a cable entry on the top of the rod-mounted bracket, and the interface thread specification is set to: M20 X1.5 or M25 X1.5. After the rod is inserted, use the fastening screw to lock the position. Fig.19As shown, the rod-mounted bracket 43 and the U-shaped connecting bracket 42 are connected by a connecting member 40, and the connecting member 40 includes a lateral connecting plate 40-1 and a transverse connecting plate 40-2 fixed to the U-shaped connecting bracket 42, the transverse connecting plate 40-2 is fixed to the rod-mounted bracket 43, and a mounting hole is set on the transverse connecting plate 40-2, and the lateral connecting plate 40-1 is set with multiple threaded mounting holes.

[0054] Preferably, one of the ceiling mounting holes 23 - 1 on the two ceiling ear brackets 23 is set as a waist-shaped hole, and the other is set as a circular hole.

[0055] Preferably, Figure 11-13 As shown, a wall-mounted mounting bracket 5 is installed on the wall-mounted mounting hole 24; a buckle 6 for temporary load bearing and position limiting is arranged on the top of the power cavity cover 2. The wall-mounted mounting bracket 5 includes a horizontally arranged wall-mounted bracket 51, a wall-mounted bracket mounting plate 52 arranged at the front end of the wall-mounted bracket 51, and a wall-mounted junction box device 53 arranged at the rear end of the wall-mounted bracket 51; the wall-mounted bracket mounting plate 52 is fixedly installed on the top of the power cavity cover 2, and a sealing ring 7 is arranged between the wall-mounted bracket mounting plate 52 and the power cavity cover 2. The buckle 6 is fixed to the top of the power cavity cover 2 by fastening screws, and a wall-mounted bracket mounting plate 52 is installed in place. An indication mark indicating that the wall-mounted bracket mounting plate 52 is installed on the top of the power cavity cover 2. A sealing ring is arranged between the wall-mounted bracket 51 and the wall-mounted junction box device 53. Four interface threaded holes are arranged on the wall-mounted junction box device 53, which are arranged in four directions of east, south, west and north. The thread specification can be NPT3 / 4" or M25X1.5. The wall-mounted junction box device 53 facilitates the connection of wall steel pipes to cables. The wall-mounted mounting bracket 5 is arranged with 90° and 25°.

[0056] like Figure 20-22 As shown, the wall-mounted junction box device at the rear end of the wall-mounted bracket 51 is set as a threaded rod-mounted bracket 50, and the threaded rod-mounted bracket 50 and the wall-mounted bracket 51 are set at 25 degrees ( Fig.21 ) and 90° ( Fig. 22 ) Installation status,

[0057] like Figure 14-16 As shown, the emergency junction box 9 is fixedly installed on the top of the power cavity cover 2 of the utility model through the connecting piece 8; a junction box hanger mounting hole 91 is set in the middle of the top of the emergency junction box 9; two junction box ceiling mounting holes 92 are respectively set on both sides of the top of the emergency junction box 9; and junction box U-shaped bracket mounting holes 93 are set at both ends of the emergency junction box 9. Four interface threaded holes are set around the cavity of the emergency lighting junction box 9, and the thread specification can be NPT3 / 4" or M25X1.5. The junction box U-shaped bracket mounting hole 93 is connected to the junction box U-shaped bracket; the U-shaped bracket envelops the outer side of the junction box to achieve a rotation angle of 0°-90°. After the junction box U-shaped bracket mounting hole 93 is connected and combined with the junction box U-shaped bracket, the angle position is locked using a fastening screw.

[0058] Preferably, both ends of the connector 8 are provided with external threads, and the external threads at both ends of the connector 8 are respectively connected to the internal threaded hole in the middle of the power cavity cover 2 and the internal threaded hole at the bottom of the emergency junction box 9.

[0059] Preferably, the junction box ceiling mounting holes 92 on both sides of the emergency junction box 9 are respectively installed with junction box ceiling brackets 10; waist-shaped mounting holes 101 are provided at both ends of the junction box ceiling brackets 10.

[0060] The utility model describes a suspension rod that is a steel pipe on the ceiling of a factory building (with threads on the outside of the port) that is connected to the threaded hole on the top interface of the power cavity cover or the threaded hole on the top interface of the junction box cavity, and at the same time, a wire is inserted into the hollow steel pipe to the power cavity of the lamp or the cavity of the junction box; after the threads are connected, they are locked with a set screw. The bottom connection thread specification of the lifting ring and the hook can be M10 / M12, and they are connected to the threaded hole on the top interface of the power cavity cover or the threaded hole on the top interface of the junction box cavity through an adapter. After the threads are connected, they are locked with a set screw.

[0061] The threaded hole at the top interface of the power cavity cover 2 or the threaded hole at the top interface of the emergency junction box cavity of the utility model is butted against each other through a hollow connector 3 made of stainless steel to ensure rigidity. At the same time, the hollow connector ensures that the line enters the emergency junction box into the power cavity of the lamp. After the connector is butted against each other, a fastening screw is used to lock the relative position to prevent loosening caused by vibration and stress release, thereby improving the reliability of module connection.

[0062] The utility model can facilitate the introduction of mains electricity according to different installation accessories. The hoisting installation is to enter the line through the hollow steel pipe of the ceiling; the U-shaped bracket is the exposed port of the lamp or the emergency junction box; the ceiling installation is to enter the exposed port except the top of the lamp or the emergency junction box; the wall installation is to enter the exposed port except the top of the lamp, including the steel pipe of the wall junction box; the pole installation (the pole end is threaded) is to enter the exposed port except the top of the lamp; the clamp is to enter the exposed port of the lamp or the emergency junction box; the lifting ring is to enter the exposed port except the top of the lamp or the emergency junction box; the hook is to enter the exposed port except the top of the lamp or the emergency junction box; the pole installation (bare pole without thread) is to enter the exposed port of the lamp or the emergency junction box.

[0063] The LED driving power supply of the utility model is a switching converter directly connected to the city grid, which converts (isolates) high-voltage alternating current into safe low-voltage direct current, provides a constant driving current for the light source component, and the driving setting can be 0-10V dimming; the light source component adopts a high-light-efficiency LED light source, performs electrical / optical conversion through LED, and provides users with high-quality lighting light.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it; although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace part or all of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A variable function combination lamp for use in a high-risk environment, comprising a lamp body (1) and a power cavity cover (2), characterized in that: The lamp body (1) and one side of the power cavity cover (2) are connected by a hinge structure; a hanger mounting threaded hole (21) is provided in the middle of the top of the power cavity cover (2); U-shaped bracket mounting holes (22) are symmetrically provided on both sides of the top of the power cavity cover (2); ceiling ear brackets (23) extending outward from the power cavity cover (2) are symmetrically provided on the other two sides of the top of the power cavity cover (2), and both ceiling ear brackets (23) are provided with ceiling mounting holes (23-1); and wall mounting holes (24) are symmetrically provided on the top of the power cavity cover (2).

2. The variable function combination lamp for high-risk environments according to claim 1, characterized in that: A hoist, a hoisting ring or a hook is installed on the hanger installation threaded hole (21) and locked with a fastening screw (3); the hanger installation threaded hole (21) is an internal thread structure, and the lower end of the hoist, the hoisting ring or the hook is an external thread structure.

3. The variable function combination lamp for high-risk environments according to claim 1, characterized in that: A U-shaped mounting bracket (4) is mounted on the U-shaped bracket mounting hole (22); the U-shaped mounting bracket (4) comprises an L-shaped fixed bracket (41) and a U-shaped connecting bracket (42); the fixed connecting bracket (41) comprises a fixed bottom plate (41-1) and a side plate (41-2); the fixed bottom plate (41-1) is fixed to the power cavity cover (2) via screws and the U-shaped bracket mounting hole (22); and the side plate (41-2) and the U-shaped connecting bracket (42) are rotatably connected via bolts.

4. The variable function combination lamp for high-risk environments according to claim 3, characterized in that: The top of the U-shaped connection bracket (42) is provided with a U-shaped clamp (44) for clamping and fixing the pole or a pole-mounted bracket (43) for mounting on the top of the pole.

5. The variable function combination lamp for high-risk environments according to claim 1, characterized in that: One of the ceiling mounting holes (23-1) on the two ceiling ear brackets (23) is configured as a waist-shaped hole, and the other is configured as a circular hole.

6. The variable function combination lamp for high-risk environments according to claim 1, characterized in that: A wall mounting bracket (5) is mounted on the wall mounting hole (24); and a buckle (6) for temporary load bearing and position limiting is provided on the top of the power cavity cover (2).

7. The variable function combination lamp for high-risk environments according to claim 6, characterized in that: The wall-mounted mounting bracket (5) comprises a transversely arranged wall-mounted bracket (51), a wall-mounted bracket mounting plate (52) arranged at the front end of the wall-mounted bracket (51), and a wall-mounted junction box device (53) arranged at the rear end of the wall-mounted bracket (51); the wall-mounted bracket mounting plate (52) is fixedly mounted on the top of the power cavity cover (2), and a sealing ring (7) is arranged between the wall-mounted bracket mounting plate (52) and the power cavity cover (2).

8. The variable function combination lamp for high-risk environments according to claim 1, characterized in that: An emergency junction box (9) is fixedly mounted on the top of the power cavity cover (2) via a connecting piece (8); a junction box hanging piece mounting hole (91) is provided in the middle of the top of the emergency junction box (9); two junction box ceiling mounting holes (92) are respectively provided on both sides of the top of the emergency junction box (9); and junction box U-shaped bracket mounting holes (93) are provided at both ends of the emergency junction box (9).

9. The variable function combination lamp for high-risk environments according to claim 8, characterized in that: Both ends of the connecting piece (8) are provided with external threads, and the external threads at both ends of the connecting piece (8) are respectively connected to the internal threaded hole in the middle of the power cavity cover (2) and the internal threaded hole at the bottom of the emergency junction box (9).

10. The variable function combination lamp for high-risk environments according to claim 9, characterized in that: A junction box ceiling mounting hole (92) on both sides of the emergency junction box (9) is respectively mounted with a junction box ceiling bracket (10); waist-shaped mounting holes (101) are provided at both ends of the junction box ceiling bracket (10).

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