What cause the decay of led street light and how to solve the matter?

The sides of urban road are laying out with lots of led street light . if  observing carefully it is easy to find that LED street lights are not as bright as they were at the beginning after using a few months . Do you know why it happen ?

it is what we have named lighting decay . After the LED street lights are mounted and  lit for some time. its luminous  intensity will be lower than the original one and the reduced part is the lighting decay. the point is that any LED products you you know all will happen, including LED street lights.

The luminous intensity decline of LED road light is the attenuation of light in transmission. if some one tell you they can offer you led street lights that lighting decay never appears.it is very obvious mistake . In fact ,all  LED street light products made by LED companies in the market have the same problem ,lighting decay .the only difference is a matter of degree .

how to tell apart which led street light have excellent anti-decay performance . Decay curve would be a visual way for reference .

In the curve above , the tested led street light lumen degradation decline is slower when compared with the industry standard curve ,that is to say, it will have better performance than many led road light product in the market .

Even High-power led street light, there still remains lighting decay . well , what cause the decay of led street light ? below are some factors and reasons  that lead to lighting decay

Four  main factors are listed to prove that affect the lighting decay .

1.Temperature

 The biggest determinant of lighting decay is the temperature of LED. if the heat dissipation design of led street light  is not so good and when the temperature of led is too high, the lighting decay  will be in a very fast pace.Generally speaking,the available lighting decay data  are all tested in an ideal condition . Just as many led street lights in the market ,equipped with multiple led ,  so when designing led road lamp it is necessary to consider the heat dissipation, the distance between the LED,  the magnitude of current and  the material of luminaires housing etc .

2. The quality of led chip

Light comes from led chip . good quality led chip not only illuminates the light what people need  , but also puts off the degree of lighting decay . 

3. The fluorescent powder of led chip .

4. the packaging technology of led chip

we all know many led light manufacturers use different led chip to meet the different colour requirement of led lights. In term of the colour of lights , the mainstream is that painting the led with different proportion fluorescent powder which can result in different  colour and made it a closed state . so Fluorescent powder and packaging technology of led are also involved in lighting decay .

Three main reasons of LED road light lighting decay

1. Thermal resistance of LED chip 

2.silver glue

3.Heat dissipation effect of substrate

There are so many factors influencing lighting decay . temperature is the key factor . many LED street lamp manufacturers do not pay special attention to the heat dissipation and the quality of their products. so they can offer you led road lights at a low price .however the lighting decay of these LED street lamp is  higher than that of LED products that pay attention to heat dissipation in long-term use.The effective way to reduce LED road light decline  is to ensure product quality and well heat dissipation design of led street lamps .

our company AGC lighting always attaches great importance to the product quality of LED street lights. The independently developed by our company streamline housing LED street light  has well solved the heat dissipation requirements of LED street lights. streamline housing not only can improve the feature of wind resistance  but also enhance the heat conduction performance. what's more , there also a vent specially design to balance  atmospheric pressure inside and outside . adopting double-design of heat dissipation controls effectively the temperature of lighting fixtures,and then lower the degree of the led street light lighting decay.

more info about led street light please check https://www.agcled.com/products/led-street-light/?from=blog