The Reason Why Solar LED Light Gets Dim

Solar LED light has been widely used in many areas. However, some users found that their solar LED lights became dim after a period of time. Why do they become dim? Here are the reasons. Although the solar LED light is modified, the problem of light attenuation still exists in the operational process of solar LED light. There are three main reasons. First, the LED light chip is of poor quality, so that the light attenuation will be faster. Second, the LED light chip performs poorly in the heat dissipation, which results in the overtemperature and faster light attenuation of solar LED light. Third, LED light is drived by constant current. Some of the LED lights are drived by voltage, which will speed up the light attenuation.

In the operational process of fluorescent lamp, the ultraviolet ray will reduce the saturation of degraded fluorescent powder. There will be a black thin film on the surface of fluorescent powder after the solar LED light discharges for a long time. Besides, there will be a lot of mercury ion or mercury atoms on the surface of the glass tube. Those mercury ion will exchange with other ion in the glass tube. After a long time, the glass tube will be black and then results in the light attenuation of fluorescent lamp and affects the luminous efficiency.

The luminous efficiency refers to the ratio of luminous flux to electric power, whose unit of measurement is lm/W. It shows the energy-saving feature of light source, which is also an important indicator of modern light source performance. LED light intensity indicates the intensity of lighting in any direction.

There are other reasons for the light attenuation of LED light, such as that driving current is higher than the rated current value. But the main reason is still the heat dissipation of LED light. The service life of LED light will be longer if the working temperature is lower and the light attenuation is lower.

It is inevitable to meet light attenuation in the light operational process. We are supposed to choose the lights which are of good quality and perform well in heat dissipation. When we use the lights, we should try to release the workload so that the light attenuation can slow down and the service life can be extended.