After a period of use of LED street light products, the brightness will decrease, and the reduced part is the light decay of the LED street light. Any LED street light product will produce light attenuation, including LED street lights. The light attenuation of LED street lights refers to the weakening of light signals during transmission. At present, the degree of light attenuation of street lamp products produced by LED street lamp manufacturers varies. High-power LED street lamps also have light attenuation, which is directly related to temperature, chip quality, phosphor powder, and LED street lamp head packaging technology.

There are many reasons for the decline of LED street lights. The thermal resistance of the LED chip itself, the influence of silver glue, and the heat dissipation effect of the substrate, colloid, and gold wire are also related to the attenuation of light. Excessive temperature can reduce the life of electronic products. Some LED street light manufacturers focus on heat dissipation in low-priced products. After long-term use of these LED street light products, the degree of light attenuation will be much higher than that of LED lights with good heat dissipation.

The way to reduce the decline of LED street lamps is to ensure the quality of lamps and the heat dissipation of street lamps.