The current density and over-current stress resistance of LED street lamps can be sealed by product developers to isolate the lamps from the environment, but the neglected pressure difference between the air inside and outside the lamps can cause many problems.The main approach now is to eliminate this problem by using mechanical design methods to ensure the service life of lamps.But it is the electronics, power and drive power that go with it, and the fact that the entire fixture is as reliable and durable as an LED, that adds value to the overall lighting system.LED lamp malfunction is the driving power problem.But for LED lamp lamps, the most basic problem, but the price varies.The gold thread inside the lamp bead is replaced by copper wire, and other raw materials are replaced by inferior materials, which is impossible for consumers to detect, and the nominal value is 1W, but only 0.5w May be detected by equipment, and consumers generally will not test.Shell with some corner aluminum or plastic, drive power supply now on the market inferior drive, careful calculation, lamp bead + shell + drive + artificial + packaging + other, the entire cost is not much.
Plus management costs, inventory costs and development costs, and so on, calculate more, but also some earn.Use of more durable seal rings or gaskets to improve seal, and/or install more screws around the seal rings or gaskets, increase shell thickness to reduce shell movement around the seal rings, etc., to enhance lamp housing durability, protect drive power and electronics.Such technology is required for LED street lighting.In LED street lamps, chips are still very important. The current density that LED chips can withstand determines their ability to resist overcurrent stress. The larger the current per unit cross-sectional area that LED chips can withstand, the stronger their ability to resist overcurrent stress will be.When conductive metal materials pass a higher current density, the metal atoms will migrate and spread along the direction of electron motion.
