Pressure balancing breather for light-emitting diode (LED) lamp

Abstract

A pressure balancing breather for a light-emitting diode (LED) lamp comprises a connector connected with a lamp body, and is characterized in that the connector is a 'cross'-shaped hollow connector; a ceramic filter is sleeved at a longitudinal end of the hollow connector; a compressing cover is arranged at the periphery of the ceramic filter, and is connected with a transverse end of the hollow connector by covering a part from the ceramic filter to the middle of the hollow connector; the other end of the hollow connector in the longitudinal direction is connected with the lamp body; through holes are respectively formed in the top and the bottom of the longitudinal connecting end of the hollow connector; and the through hole in the bottom of the longitudinal connecting end is communicated with the inside of the lamp body. By the structure, the pressures on the inner side and the outer side of a shell are balanced when the temperature and the pressure of a lamp housing are changed. As long as air is in contact with the filter, the air inside the lamp body and the air outside the lamp body can be freely exchanged. The ceramic filter can effectively filter water and dust, and the corrosion resistance and the weather resistance of the ceramic filter are higher than those of a breathable film, so that the lamp can stably run for a long time.

Description

technical field [0001] The invention relates to the application field of LED lamps, in particular to a pressure balance respirator for LED lamps. Background technique [0002] Lamp housings arranged outdoors are frequently subjected to external temperature and pressure changes. Constantly changing temperatures, dust, dirt, and moisture greatly affect the stability and lifespan of outdoor lighting fixtures. For example, rainfall can cause a sharp temperature drop in the luminaire housing. A sharp drop in temperature will result in a vacuum of 150mbar or greater inside the enclosure. This allows air and moisture to enter the interior of the enclosure through the sealed gap. Moisture adheres to the inside walls of the cabinet and condenses into beads. This will seriously affect the performance of the product. The constant change of temperature causes the sealing strip to change with the stress, and finally makes the sealing strip fatigue-this means that not only moisture, ...

AI Technical Summary

Problems solved by technology

This will seriously affect the performance of the product

The constant change of temperature causes the sealing strip to change with the stress, and finally makes the sealing strip fatigue-this means that not only moisture, but also water and various liquids will eventually enter the inside of the housing through the gap, because the current lamps have Electronic components, and electronic components are most afraid of liquid, the direct consequence of liquid flowing into electrical components is a short circuit, which eventually causes the lamp to burn out and fail

The existing solution in the market is to use a nano-breathable membrane to achieve the purpose of waterproof, dustproof and breathable. In practical applications, this kind of breathable membrane is extremely easy to fail under the washing of rainwater, mainly because water droplets can easily attach to the breathable membrane. The surface of the air-permeable membrane is relatively small, and the attached water droplets under heavy rain are too large. Under normal circumstances, under the action of rainwater, the temperature of the lamp itself drops relatively quickly, so it is easy to absorb water or directly block the air exchange port under the action of temperature difference. Thus losing the role that the respirator should play

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