The sun lights can be the cost? What factors influence the lamp

Many customers reflect the most recently a question would be: solar LED street light will produce light failure. The LED street lamp light failure after a period of light, the light intensity is lower than the original. Factors that affect the LED light failure has direct relationship with temperature, the core

many customers recently reported one of the problems that may be a solar LED street light will produce light attenuation. Led street light attenuation refers to the lighting after a period of time, the light intensity is lower than before. The influencing factors of leds light attenuation is directly related to the temperature, and determined by the chip, phosphor and packaging technology. Here are influence led road light attenuation of the two main factors: 1. Light-emitting diodes, the quality problem of the product itself: the light emitting diode chip shape is poor, brightness attenuation fast; In addition, due to the defects in the process of production, light emitting diode chip heat dissipation can't very well, deriving from pins in light emitting diode chip temperature, increase the attenuation of the chip. 2. Conditions of use: light-emitting diodes (leds), powered by constant current, some leds attenuation due to voltage driver. Drive current is greater than the rated driving conditions. Affect light attenuation of led street light products, in fact, the most critical factor is the heat problem, because a lot of no particular attention to the problem of secondary products of heat, which makes the light attenuation leds products is much higher than the long-term use of the heat dissipation of the light-emitting diode products. In addition to lighting manufacturers, the thermal resistance of light emitting diode chip itself, silver glue, the influence of the substrate of the cooling effect and colloid and gold are also associated with light attenuation.