Tunnel lamp waterproof structure

Abstract

The utility model relates to a tunnel lamp waterproof structure which comprises a tunnel lamp, an electric appliance box, an electric appliance box sealing cover, a sealing ring and a fixing bolt, an outer protrusion is designed on the periphery of an opening of the electric appliance box, the outer side face of the outer protrusion is designed to be an outer inclined face with the upper end inclining inwards, and an annular channel is designed on the outer inclined face. A rectangular groove is formed in the inner side of the electric appliance box sealing cover, the inner side edge of the rectangular groove is designed to be a flaring-shaped inner inclined edge, the inner inclined edge of the electric appliance box sealing cover is correspondingly buckled to the outer side of the outer inclined face of the outer protrusion of the electric appliance box, the inner side of the sealing ring is located in the annular channel, and the inner inclined edge extrudes the outer side of the sealing ring to form sealing. The electric appliance box sealing cover has the advantages of being ingenious in design, reasonable and compact in structure, good in sealing effect due to the fact that the sealing ring is extruded through cooperation of the inner inclined face and the outer inclined face between the electric appliance box and the electric appliance box sealing cover, capable of meeting sealing requirements due to thermal expansion and cold contraction caused by temperature changes and extrusion or expansion of the sealing ring and long in service life.

Description

Technical Field

[0001] The utility model relates to the field of tunnel lamps, in particular to a waterproof structure of a tunnel lamp. Background Art

[0002] Tunnel lights are special lamps used for tunnel lighting to solve the "black hole effect" or "white hole effect" caused by sudden changes in brightness when vehicles enter or exit tunnels. Tunnel lights require components such as drive power supplies, so tunnel lights are generally designed with an electrical box for placing components such as drive power supplies, which requires good sealing performance of the electrical box. Currently, tunnel lights are designed with sealing performance, but after being used outdoors, as the temperature changes, the sealing cover of the electrical box and the electrical box expand and contract due to heat, resulting in the sealing ring being unable to effectively seal, affecting the service life of the tunnel lights. Summary of the invention

[0003] In order to solve the above technical problems, the utility model proposes a waterproof structure for a tunnel lamp, which has an ingenious design, a reasonable and compact structure, and remains effectively sealed as the temperature changes.

[0004] The technical solution of this utility model:

[0005] A waterproof structure for a tunnel light comprises a tunnel light, an electrical box, a sealing cover for the electrical box, a sealing ring, and fixing bolts. The electrical box is installed on one side of the tunnel light, and the sealing cover for the electrical box is installed on the outside of the electrical box. A plurality of mounting holes are designed around the outer side of the sealing cover for the electrical box, and a plurality of thread holes are also designed on the outer side of the mouth of the electrical box. A fixing bolt is passed through each mounting hole of the sealing cover for the electrical box and then screwed into a corresponding thread hole on the electrical box for locking and fixing. An outer protrusion is designed around the mouth of the electrical box, and the outer side surface of the outer protrusion is designed as an outer inclined surface with an upper end inclined inwardly, and an annular channel is designed on the outer inclined surface. A rectangular groove is designed on the inner side of the sealing cover for the electrical box, and the inner side edge of the rectangular groove is designed as an inner inclined edge in a flared shape. The inner inclined edge of the sealing cover for the electrical box is correspondingly buckled on the outer side of the outer inclined surface of the outer protrusion of the electrical box, and the inner side of the sealing ring is located in the annular channel, and the inner inclined edge squeezes the outer side of the sealing ring to form a seal.

[0006] There are two annular channels, and the cross section of the annular channels is semicircular; a sealing ring is respectively installed in each annular channel.

[0007] The sealing ring is a silicone sealing ring.

[0008] A plurality of waist-shaped ears are designed around the electrical box sealing cover, the inner sides of the waist-shaped ears are connected to the electrical box sealing cover, and the outer sides of the waist-shaped ears are designed with mounting holes.

[0009] The outer side of the mounting hole is designed with a recessed groove, and after the fixing bolt is screwed into the threaded hole, the nut of the fixing bolt is hidden in the recessed groove.

[0010] The utility model has the advantages of clever design and reasonable and compact structure. The sealing ring is squeezed by the inner and outer inclined surfaces between the electrical box and the electrical box sealing cover, so the sealing effect is good. The thermal expansion and contraction caused by temperature changes can still meet the sealing requirements through the extrusion or expansion of the sealing ring, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a sectional schematic diagram of the utility model.

[0012] Figure 2 It is a schematic diagram of the utility model.

[0013] Figure 3 It is a schematic diagram of the sealing cover of the electrical box of the utility model. DETAILED DESCRIPTION

[0014] See attached Figure 1-3 A waterproof structure for a tunnel light comprises a tunnel light 1, an electrical box 2, an electrical box sealing cover 3, a sealing ring 4, and a fixing bolt 5. The electrical box 2 is installed on one side of the tunnel light 1, and the electrical box sealing cover 3 is installed on the outer side of the electrical box 2. A plurality of mounting holes 6 are designed around the outer side of the electrical box sealing cover 3, and a plurality of thread holes are also designed on the outer side of the mouth of the electrical box 2. A fixing bolt 5 passes through each mounting hole 6 of the electrical box sealing cover 3 and is screwed into the corresponding thread hole on the electrical box 2 to be locked and fixed; a ...; a fixing bolt 5 passes through each mounting hole 6 of the electrical box sealing cover 3 and is screwed into the corresponding thread hole on the electrical box 2 to be locked; a fixing bolt 5 passes through each mounting hole 6 of the electrical box sealing cover 3 and is screwed into the corresponding thread hole on the electrical box 2 to be locked; a fixing bolt 5 passes through each mounting hole 6 of the electrical box 2 and is screwed into the corresponding thread hole on the electrical box 2 to be locked; a fixing bolt 5 passes through each mounting hole 6 of the electrical box 2 and is screwed into the corresponding thread hole on the electrical box 2 to be locked; a fixing bolt 5 passes through each mounting hole 6 of the electrical box 2 and is screwed into the corresponding thread hole on the electrical box An outer protrusion 21 is designed around the periphery, and the outer side surface of the outer protrusion 21 is designed as an outer inclined surface 22 with an upper end inclined inwardly, and an annular channel 7 is designed on the outer inclined surface 22; a rectangular groove is designed on the inner side of the electrical box sealing cover 3, and the inner side edge of the rectangular groove is designed as a flared inner inclined edge 31, and the inner inclined edge 31 of the electrical box sealing cover 3 corresponds to the outer side of the outer inclined surface 22 of the outer protrusion 21 of the electrical box 2, and the inner side of the sealing ring 4 is located in the annular channel 7, and the inner inclined edge 31 squeezes the outer side of the sealing ring 4 to form a seal.

[0015] There are two annular channels 7, and the cross section of the annular channels 7 is semicircular; a sealing ring 4 is respectively installed in each annular channel 7. The sealing ring 4 is a silicone sealing ring 4.

[0016] The electrical box sealing cover 3 is designed with a plurality of waist-shaped ears 8 around the periphery, the inner side of the waist-shaped ears 8 is connected to the electrical box sealing cover 3, and the outer side of the waist-shaped ears 8 is designed with mounting holes 6. The waist-shaped ears can produce a certain elastic deformation after the fixing bolts are pre-tightened, which is used to compensate for the gap problem caused by the electrical box sealing cover and the electrical box temperature after the temperature changes, and no gap will be generated, further ensuring a stable seal.

[0017] The outer side of the mounting hole 6 is designed with a recessed groove 61. After the fixing bolt 5 is screwed into the threaded hole, the nut of the fixing bolt 5 is hidden in the recessed groove 61. The recessed groove design ensures that the nut of the fixing bolt will not protrude outside and cause interference problems.

[0018] When the utility model is used, the sealing ring is first installed in the annular channel. In order to ensure the sealing effect, two paths can be designed. The electrical box sealing cover is buckled on the outside of the electrical box, and the inner inclined surfaces of the electrical box sealing cover are respectively pressed on the outer sides of the outer inclined surfaces of the outer protrusions of the electrical box, and the inner inclined surfaces and the outer inclined surfaces squeeze the sealing ring. The portion of the sealing ring protruding from the annular channel will be squeezed and radially deformed to form a seal. Due to the inclined matching design, the sealing ring has a good extrusion effect, and the larger the extrusion deformation, the better the sealing effect; then the electrical box sealing cover and the electrical box are locked and fixed together by fixing bolts; even if affected by temperature changes, the sealing ring still ensures that the sealing ring is in a sealed extrusion state through its own elasticity to ensure the sealing effect; at the same time, the utility model is also designed with a plurality of waist-shaped ears for installation and fixing. During the pre-tightening process of the fixing bolts, the waist-shaped ears will produce a certain small elastic deformation, the outer end of the waist-shaped ears will be as close to the end of the electrical box as possible, and the root of the waist-shaped ears will be pressed on the outer inclined surface. Once the temperature changes, the elastic deformation of the waist-shaped ears can be compensated, ensuring that the electrical box sealing cover continues to squeeze the sealing ring, ensuring sealing, and extending the service life of the tunnel lamp.

Claims

1. A tunnel light waterproof structure, characterized in that: The utility model comprises a tunnel lamp, an electrical appliance box, an electrical appliance box sealing cover, a sealing ring and fixing bolts. The electrical appliance box is installed on one side of the tunnel lamp, and the electrical appliance box sealing cover is installed on the outer side of the electrical appliance box. A plurality of mounting holes are designed around the outer side of the electrical appliance box sealing cover, and a plurality of thread holes are also designed on the outer side of the mouth of the electrical appliance box. A fixing bolt is passed through each mounting hole of the electrical appliance box sealing cover and then screwed into the corresponding thread hole on the electrical appliance box for locking and fixing. An outer protrusion is designed around the mouth of the electrical appliance box, and the outer side surface of the outer protrusion is designed as an outer inclined surface with the upper end inclined inwardly, and an annular channel is designed on the outer inclined surface. A rectangular groove is designed on the inner side of the electrical appliance box sealing cover, and the inner side edge of the rectangular groove is designed as an inner inclined edge in a flared shape. The inner inclined edge of the electrical appliance box sealing cover is correspondingly buckled on the outer side of the outer inclined surface of the outer protrusion of the electrical appliance box, and the inner side of the sealing ring is located in the annular channel, and the inner inclined edge squeezes the outer side of the sealing ring to form a seal.

2. A tunnel light waterproof structure according to claim 1, characterized in that: There are two annular channels, and the cross section of the annular channels is semicircular; a sealing ring is respectively installed in each annular channel.

3. A waterproof structure for tunnel lights according to claim 1 or 2, characterized in that: The sealing ring is a silicone sealing ring.

4. The waterproof structure of a tunnel lamp according to claim 1, characterized in that: A plurality of waist-shaped ears are designed around the electrical box sealing cover, the inner sides of the waist-shaped ears are connected to the electrical box sealing cover, and the outer sides of the waist-shaped ears are designed with mounting holes.

5. A waterproof structure for tunnel lights according to claim 1 or 4, characterized in that: The outer side of the mounting hole is designed with a recessed groove, and after the fixing bolt is screwed into the threaded hole, the nut of the fixing bolt is hidden in the recessed groove.

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