Water-proof lamp with breathing device

Abstract

The invention discloses a water-proof lamp with a breathing device, comprising a lamp shell on which an installation port is arranged, wherein an inner cover is arranged in the installation port in a sealing way, at least one air hole for ventilation is arranged in the inner cover, a water-proof and breathable film which is air-permeable and watertight is attached to the air hole, an outer cover used for shielding the inner cover is arranged outside the inner cover, and a breathing passage used for communicating the air hole with the atmospheric environment is arranged between the outer coverand the inner cover. The invention provides the water-proof lamp with the breathing device for a high-power lamp which needs to be water-proof and air permeable, and the water-proof lamp balances theair pressure inside and outside the lamp shell by utilizing the breathing device, limits the formation of the positive and negative pressure inside the lamp to the utmost extent and can be effectively water-proof. The water-proof lamp with the breathing device has simple structure, good effect on balancing the air pressure inside and outside the lamp and good water-proof effect.

Description

technical field [0001] The invention belongs to the technical field of illumination and relates to a lamp, in particular to a waterproof lamp with a breathing device. Background technique [0002] Due to the large heat generated by the light source of high-power lamps, the temperature inside the housing is very high when the lamp is lit, resulting in a large temperature difference between the inside and outside of the lamp. This will cause several problems: 1. When the lamp is lit, the sealed gas in the lamp housing will expand due to heat, and the lamp housing and the transparent parts at the front of the lamp will be under great pressure, especially the transparent parts will be easily broken after being pressed. Induce self-destruction. 2. If the lamp shell is cooled by rain or other reasons, the high-temperature expanded gas in the lamp shell will cool down rapidly, making a negative pressure space inside the lamp shell, and the rainwater outside the lamp is easily suck...

AI Technical Summary

Problems solved by technology

[0002] Due to the large heat generated by the light source of high-power lamps, the temperature inside the housing is very high when the lamp is lit, resulting in a large temperature difference between the inside and outside of the lamp.

This will cause several problems: 1. When the lamp is lit, the sealed gas in the lamp housing will expand due to heat, and the lamp housing and the transparent parts at the front of the lamp will be under great pressure, especially the transparent parts will be easily broken after being pressed. self-destruct

2. If the lamp shell is cooled by rain or other reasons, the high-temperature expanded gas in the lamp shell will cool down rapidly, making a negative pressure space inside the lamp shell, and the rainwater outside the lamp is easily sucked into the lamp due to the negative pressure. Inside, making it difficult to protect the lamps

3. The heat of the light source causes the air in the lamp shell to expand, and when it is cold, the air in the lamp shell cools down rapidly to cause a negative pressure inside the lamp, and then the heat of the light source causes the air in the lamp shell to re-expand, so that the repeated expansion and contraction of the air in the lamp makes it transparent Parts are affected by positive and negative pressure, very easy to damage

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