Sealing device for lamp

Abstract

The invention relates to a sealing device used for a lamp. The sealing device comprises a first sealing ring and a second sealing ring which are cooperatively used, wherein grooves used for holding a lubricant are formed on both contact surfaces of the first sealing ring and the second sealing ring which are matched. The sealing device for the lamp adopts two sealing rings, and compared with the prior art which adopts one sealing ring, the sealing device has the advantages that: the strength and the elasticity are higher due to the cooperatively used two sealing rings; the requirements on radial thickness or axial thickness of a single sealing ring of the two sealing rings are lower than those of the original one sealing ring; and the processing and the processing are easier. Simultaneously, the lubricant is filled between the two sealing rings; and therefore, on the one hand, the effect of sealing and waterproofing of the lamp is ensured, and on the other hand, the friction between the lamp and the two sealing rings are greatly reduced through the lubrication action of the lubricant when the lamp are disassembled, the lamp can be disassembled by only applying little force, time and labor are saved, damage on the sealing rings due to overstress in the disassembling is avoided, the service life of the sealing rings is prolonged, and the cost is saved.

Description

technical field [0001] The invention relates to the technical field of sealing fittings, in particular to a sealing device for lamps. Background technique [0002] In the field of lighting technology, some large lamps need to be installed in special occasions, such as environments with high requirements for explosion-proof and waterproof. In these environments, the interior of the lamp is required to be completely isolated from the external environment, that is, the lamp is required to have a good sealing effect. In the prior art, seals are usually used to achieve sealing. For example, some large fixed lamps generally include a back cover, a housing, a transparent member, and a light source assembly located between the back cover and the lamp housing. In order to achieve a good seal, an annular groove is generally provided on the back cover, and a rubber sealing ring is arranged in it to seal the gap between the back cover and the housing. [0003] However, since the volu...

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Problems solved by technology

[0003] However, since the volume of the above-mentioned large lamps is usually relatively large, in order to improve the sealing level, it is usually necessary to exert a certain amount of pressure on the sealing ring when assembling the lamps. Although this ensures the sealing performance, it also causes the following problems: 1. To achieve a good seal, it is necessary to increase the friction and exert a certain amount of pressure on the rubber sealing ring. However, when it is necessary to open the lamp housing to replace its internal light source components and other parts, due to the high pressure during assembly, it leads to It is difficult to open the lamp housing during disassembly, and even requires a lot of people to complete it, which is time-consuming and laborious, which increases labor costs and causes great inconvenience to maintenance

2. When opening the lamp housing, it is inevitable that the rubber sealing ring will be damaged due to excessive force, which will affect the later sealing effect of the lamp and cause safety hazards. At the same time, the service life of the sealing ring will be greatly reduced, and the replacement cost will be increased.

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