How to identify the quality of lighting products

Common quality problems in LED luminaires during testing are vulcanization, chemical incompatibility, dead lights and light decay. If it is vulcanization and chemical incompatibility, it is necessary to carry out an inspection test on the material of the luminaire, find out the suspicious material, and then conduct a confirmatory experiment to confirm whether the material is harmful to the light source of the luminaire. In the case of dead lights and light decay, a complete failure check of the luminaire should be performed to find out the cause of the failure.

There are two ways to qualify LED lighting products: the first is reliability testing, which identifies thermal quality through thermal shock and environmental simulation, but this method has a long time period (3-6 months) and is expensive. Still can't find the real reason. The second is the material identification method, which identifies the quality of the product from the perspective of materials and defects.

Ordinary consumers: look at the appearance, touch the temperature, listen to the sound

Professional organizations identify the quality of LED products from the technical point of view, but for ordinary people, the initial identification can only be done in a simple way. A brand of LED lighting manufacturers told reporters that ordinary consumers to buy LED lamps can be identified from three aspects: look at the appearance, touch the temperature and listen to the sound, the basic quality can be divided.

First of all, from the appearance of the luminaire, the appearance should be free of cracks, looseness and traces of smashing between the interfaces. During the installation and disassembly process, the lamp cap should not be loose or smashed. The plastic shell of the lamp must be selected from the flame retardant type of engineering plastics. The surface of the good quality material has a texture similar to frosted glass. The ordinary plastic surface is smooth and shiny, but it is easily deformed and flammable. It is forbidden to be used in the production of lamps.

The second is to touch the temperature of the lamp. Under normal working conditions, the temperature of the LED lamp should be relatively low. If the heat dissipation condition is not good, the lamp bead works at high temperature, the lamp body will be hot, and the light decay will be very large. Will be greatly reduced. At the same time, if the luminaire is lit and turned off, if there is a rapid flashing, it also indicates that there is a quality problem.

Third, listen to the sound when the LED lights work. Electromagnetic compatibility is a project that must be passed by electrical appliances. However, the detection of this project is very complicated. When users purchase lamps, they should see whether there is a mark on the packaging that passes the national electromagnetic compatibility test. It can also be judged by a small experiment, with a medium-short-wave radio. When the LED is working, put the radio nearby. The lower the noise received by the radio, the better the electromagnetic compatibility of the lamp under test, in a quiet environment. In the sound of working with LED lamps, if the sound of the work of the lamps can be heard very clearly, it also indicates that the quality of the lamps is not good.

Finally, when reminding consumers to buy lamps, they must go to the regular store and buy brand lighting . At the same time, don't forget to ask for invoices, vouchers or small tickets after purchasing the lamps, and keep these documents in case, so that there are complaints when there are quality problems. .