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Why do the lamp beads of led street lamps burn black?

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Why do the lamp beads of led street lamps burn black?

Led street lights have been strongly promoted by the state because of energy conservation and environmental protection, and have gradually replaced traditional street lamps. As it is used more and more, there will be some failures more or less. For example, many people ask online why the led lights of led street lights are burnt black? Let's take a look at RYGH:

First of all, the two main reasons for the blackening of the lamp bead are: high current, oxidation, and possibly the quality of the lamp bead or poor heat dissipation.

Let's talk about this big current problem first. Many manufacturers blindly pursue the high brightness of LED street lamps, increase the current to increase the brightness, and thus increase orders. However, this will cause great trouble to consumers, because as the current increases, the heat generated by the led street lamp will increase dramatically. When the current exceeds a certain value, the lamp bead is likely to be damaged. Even if the lamp bead is not burned, it is likely to directly reduce its service life.

Then another reason for the blackening of the lamp bead may be due to oxidation. If the electrode is an aluminum electrode, it is easily oxidized and blackened. Gold electrodes may also be vulcanized and blackened.

Of course, in addition to these two main reasons, there are also some secondary reasons, such as the quality of the lamp beads is not good or the heat is not good. There are still a few things that are cheap and inexpensive, and the lamp beads are also worth a penny. The quality of the lamp beads that are too low-priced will be worse.

There is also a heat dissipation problem. The heat dissipation of led street lights is very important. If the heat dissipation is not good, it will not only bring damage to the lamp beads, but also have a great impact on the whole LED lamp head.

Pub Time : 2019-10-12 17:12:00 >> News list
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