With the popularity of Led downlight and LED Tube widely used, it is necessary for a lot of problems coming up during the operating process. That is why we need this brief of FAQ in LED Lighting, like led downlight FAQ.
First, how do we comprehend the promise the manufacturer made about the LED tube is guaranteed for a year?
If the manufacturer makes the promise that the LED bulb is guaranteed for a year, then its design life should be more than two years. The statement of “Guaranteed for a year” actually means it can assure that you can use this product for at least one year. Generally, if a product has something wrong, it will be out of order in the first month. So,if it perfectly works, you don't need to be worried about its quality any more. It can last for its service lifetime.
Second, why LED lights's plastics will be yellowing when used for a while?
Plastics yellowing is a basic characteristic of plastics, commonly known as aging. There are plenty of reasons of plastics yellowing. The most important one is the photochemical reaction produced by the raying of lights. And the PC material can also not be an exception. Of course, we can add some anti-aging materials in the plastics. But, it can only longer the time of its yellowing which means when it is old enough, it will absolutely be yellowing. However, this process won't affect the fundamental characteristics such as thermostability and fire resistance.
Third, how to judge each part of the combination of the led downlight bulb is firm enough?
Without special instruments in the lab, we can still use our naked eyes for observation and some simple actions to judge and distinguish. When we judge the firmness between the electric light socket and the plastic parts, we should check if there is a chink and the size of the chink is reasonable. Then we should use one hand to hold the electric light socket tightly, and another hand to twist the plastic parts. If we can twist it, this combination is firmless.
Forth, how to judge the color rendering index on the LED lighting bulbs?
We can turn on the light, making it shinning on our hands, if our hands look rosy and tender, this product has a high color rendering index, otherwise a low color rendering index. In the same way, we can also put an object which has a certain color under the different lights, compare your feelings of those. In this way, we can definitely make a judgment of difference in degree of the bulb's color rendering index.
Fifth, how to judge the luminous flux and lighting effect?
To judge that if a LED lighting bulb is energy saving and the effect of the energy conservation is obvious or not, we should feel its light by our naked eyes on the condition of no special instruments.
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