What is the cause of the light decay of LED street lights?

Since its market launch, LED street lights have been sought after by people for their energy-saving, environmentally friendly, and good luminous effect. However, careful people found that the brightness of the LED street light was very high when it was first used, and after two or three years, the brightness seemed to be dimmed. Why would such phenomenon happen? In fact, there is no need to worry about this phenomenon, it is just a normal light decay phenomenon. Then there is a problem again. Why does LED street lamp have light decay? LED street lamp manufacturers have summarized the following reasons for your reference:

1. The luminous heat energy of LED street lamps belongs to a small range of concentrated heat energy. Under the conditions of high power and long-term continuous operation, the temperature of the LED chip will be very high, and the various heat dissipation modules cannot effectively dissipate heat, resulting in LED street lamps Light decay occurs and affects its service life, which is also the most critical reason.
2. The LED is driven by constant current, and some LEDs are driven by voltage to cause the LED to attenuate. The driving current is greater than the rated driving conditions, which causes the LED street light to fade.
3. LED street lights are used outdoors and are affected by environmental factors. If the manufacturer does not do a good job of sealing and waterproofing the lamp head, it will cause the inside of the light source to be corroded by rainwater and acid-base substances. Affect the service life and cause light decay.

In fact, no matter what we do, LED street lights will suffer from light decay, but the problem is that the light decay is not serious. If we choose a good LED street lamp head with a waterproof level above IP and various heat dissipation modules, it will greatly reduce the light attenuation and extend the service life.