The LED Flood Light Does Not Light Up After Being Used For A Long Time. This Is The Reason!

LED light decay means that after a period of time when the LED is lit, its light intensity will be lower than the original light intensity, and the lower part is the LED light decay. Any product has a life span, and the same is true for lamps. With the passage of time, various functional parameters continue to decline, and finally until the product can not be used in production. No matter what the light source is, the luminaire cannot avoid the problem of light decay.

There is still a lot of controversy over the reasons for the light decay, and the micro-factors that cause the luminous efficiency of lamps and lanterns to decline are still inconclusive. However, generally speaking, the main reason for the luminous decay of LED floodlights is heat dissipation.

According to the law of conservation of energy, the heating of LED floodlights is inevitable. The most ideal working temperature range of LED floodlights is between -25 and 40°, but this kind of working environment temperature is basically impossible to reach, and the heating of the lamps will affect it. The light decay and lifespan of LED floodlights. When the LED floodlights are working, about 80% of the electrical energy is converted into heat energy, and 20% of the electrical energy is converted into light energy. The aluminum body of the LED floodlight is used To dissipate heat to the LED, because when the LED chip is working, its own ambient temperature is inversely proportional to the light output rate. The higher the temperature, the lower the light output rate. When the temperature reaches the maximum use temperature of the LED chip, the lamp will burn out.

In addition, the thermal resistance of the LED chip itself, the influence of silver glue, the heat dissipation effect of the substrate, and the glue and gold wire are also related to the light decay of the LED flood light. Generally, 5% within one year of LED flood light is considered normal, and 15% within three years, so LED linear lights may still be usable after 5 years, but the luminous flux will be reduced a lot. If the light decay of the lamp exceeds 30%, it is recommended to replace the LED linear lamp.

How to solve the light decay of lamps?

In fact, in a strict sense, LED floodlights cannot avoid light decay, which is a technical problem of common concern in the industry. Therefore, when buying lamps, you must choose LED floodlights with better quality and heat dissipation performance. In the process of use, if you want to delay the light decay speed and prolong the life of the lamps, you should minimize the work load of the lamps.