News

How to judge the quality of household LED lights

Update:21 Sep 2019
Summary:

1.Light effect This represents the optical design and q […]

1.Light effect

This represents the optical design and quality of the lamp used by the manufacturer. The manufacturers of the lamp are divided into a number of packages and chips. The core technology directly affects the light efficiency. The package also has a great influence. However, there are not many exceptions except for a few particularly expensive packaging plants. Generally speaking, the light effect of the lamp on the market has exceeded 120LM/W, but this is just a parameter without a lampshade and no lens. In general, a bulb with a particularly low luminous efficiency, such as 60-70 lm/w, is very poor. Basically, it can be judged that the life of the garbage is not long. The comparison method is to buy a power meter with the same power bulb. If the brightness is weak, it is worse. The brightness of the yellow light should be compared with the yellow light. The bulbs with different color temperatures cannot be compared without using the equipment.

2. Cooling

This is very terrible for the light bulb. The basis of heat dissipation is that heat has to be transmitted to disperse. Generally do not buy plastic shells. This technology is still just a gimmick. Please buy an aluminum alloy shell. Try to touch it and heat it at about 70 degrees. Don't buy it too low. Don't buy it if it is too hot. The larger the shell, the better the power.

3. Color rendering

Not all manufacturers' logos on the shells are reliable. This is a big problem. So try to buy about 70. This is a conscience label. If the price of a single bulb is below 7 yuan per watt but is marked with a color rendering index of 85 (CRI) and looks very bright then don't buy this is a liar. The higher the CRI, the lower the light efficiency, which is still very accurate at present.

4.Strobe

At present, there is no strobe for all reliable drivers. At the very least, you can't flash when you use a mobile phone camera. This is also a good way to test most LED lamps. The camera can reach 24-30fps. If you flash, then the power supply design of this lamp is either problematic. It is a cut-throat.