What is the role of waterproof and breathable membrane in floodlights?

Floodlights are not affected by environment, humidity, etc. Also affected by temperature, floodlights produce higher temperatures during use due to the conversion efficiency of electrical energy to light energy. When the temperature of the floodlight increases, the internal pressure will increase, forming a pressure difference with the atmosphere. If there is a certain gap in the floodlight, the gas in the cavity will leak out. When the temperature of the lamp drops, the internal air pressure will decrease, and the air outside will Even moisture will seep in. Even if the new floodlight has good airtightness, aging during long-term operation will cause gas (water vapor) to penetrate. The long-term alternation of positive and negative pressure differences will cause the gap between the structural parts to become larger, eventually leading to poor airtightness. Produce a respiratory effect.
A serious problem caused by the respiratory effect is the penetration of water vapor. Once the internal humidity of the floodlight increases, it will not only cause water droplets to condense on the lens and affect the effect, but also cause the lens, light source and other components to be corroded, accelerate aging, and even cause electrical short circuits, causing various safety issues. In addition, even if the air pressure difference is not enough to cause the breathing effect, the high pressure generated when the sealed cavity is at high temperature will damage the light source and lens. Therefore, in order to ensure the service life of household floodlights and maintain the balance of air pressure inside and outside the lamp, it is extremely important to use waterproof and breathable membranes.
The application of waterproof and breathable membrane can effectively solve the problem caused by the breathing effect. It can well balance the pressure difference between the inside and outside of the floodlight, has good breathability, and can be waterproof and breathable. Balance the pressure and extend the service life of the floodlight.
Whether in life or work, LED lighting is used more and more frequently. Because outdoor and other working environments are very harsh, lamps are required to work normally in high temperatures, severe cold, rain, etc., so the structure of outdoor floodlights must reach IP67 dustproof and waterproof level.