How to distinguish inferior LED street light fixtures

At present, the quality of LED street lamps on the market varies, and the prices of lamps with the same power are actually several times different. Whether it is the price or the quality is worrying, now I will analyze the extremely cheap LED street lamps on the market, so that you can buy them. Qualified lamps with high quality and low price can avoid future worries.

As the saying goes, you get what you get for every penny, the price is extremely cheap, and the cost cannot be high. Buying is not as good as selling it. No matter how cheap it is, he will make money, and no one will do business that loses money. The result is that the price of lamps is getting lower and lower, but the quality cannot be guaranteed. There are so many points to let you know the tricks of low-priced lamps.

First of all, its light-emitting chip is an inferior product, which is reflected in the luminous efficiency. The luminous efficiency of a single chip is 90LM/W, and the efficiency of the whole lamp is even lower, generally below 80LM/W. Now the big brand light-emitting chips in the factory are at least 140LM. /W or more, this is incomparable, and some people say that it doesn’t matter if the efficiency is low, it can be bright, but it will bring a large amount of heat, and the light decay will expand rapidly after a long time. It does not take a year or two. Scrap.





Secondly, the selection of the driving power supply, the power supply of the same specification is very different in price due to the selection of accessories, and the service life will also vary greatly. Low-priced power supplies generally start to be damaged in a large area after two years, but high-quality power supplies generally have a warranty of more than 5 years and a service life of more than 7 or 8 years, which greatly reduces the maintenance cost.

Thirdly, the design and material of the radiator are also very important. The heat dissipation design of a good lamp is scientific and reasonable, the heat dissipation is fast, the temperature rise does not change much after lighting for a long time, and the hand does not feel hot, but the shoddy radiator is only lighted to reduce the cost. It will be hot, it will also affect the normal power of the lamp, and it will accelerate the light decay of the lamp.