What factors affect the light decay of street lamps

One of the most frequently reported questions by many customers recently is: will solar street light produce light decay? The light decay of solar street light means that after a period of lighting, its light intensity is lower than the original. The factors that affect LED light decay are directly related to temperature, and are determined by chip, phosphor and packaging technology. The following are the two major factors that affect the light decay of solar street light: 1. The quality of the LED product itself: the quality of the LED chip used is not good, and the brightness decays quickly; in addition, there are defects in the production process, and the heat dissipation of the LED chip cannot be good. It is derived from the PIN pin, which causes the temperature of the LED chip to be too high to increase the attenuation of the chip. 2. The problem of using conditions: LEDs are driven by constant current, and some LEDs are driven by voltage to make the LEDs attenuate; the driving current is greater than the rated driving conditions. In fact, among the many factors that affect the light decay of solar street light products, the most critical is the heat problem, because many manufacturers do not pay special attention to the problem of heat dissipation in secondary products, which leads to the long-term use of LED products. LED products that focus on heat dissipation are much higher. In addition, the thermal resistance of the LED chip itself, the influence of silver glue, the heat dissipation effect of the substrate, as well as the colloid and gold wires are also related to light decay.
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