Identify the quality of LED lighting products

Professional testing agency: identification materials

Common quality issues during the testing process of LED lamps include vulcanization, chemical incompatibility, dead lights, and light decay. If it is due to vulcanization and chemical incompatibility, it is necessary to conduct troubleshooting tests on the materials of the lamp to identify suspicious materials, and then conduct validation experiments to determine whether the materials are harmful to the light source of the lamp. If it is a dead light or light failure, a comprehensive failure inspection should be conducted to identify the cause of the failure.

There are two methods for testing organizations to determine whether LED lighting products are qualified: the first is reliability testing, which uses thermal shock and environmental simulation to identify the quality of lamps. However, this method has a long time cycle (3-6 months) and is expensive, and the real reason cannot be found. The second method is material identification, which evaluates the quality of products from the perspective of using materials and finding defects.

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

Professional organizations identify the quality of LED products from a professional perspective, but for ordinary people, only a simple way to conduct preliminary identification. A manufacturer of LED lamps of a certain brand told reporters that ordinary consumers can distinguish between good and bad quality by looking at the appearance, touching the temperature, and listening to the sound when purchasing LED lamps.

First of all, from the appearance of the lamp, the appearance should be free of cracks, looseness, and traces of prying between the interfaces. During installation and disassembly, the lamp head should not be loose or tilted. The plastic shell of the lamp must be made of engineering plastic flame retardant materials, with a surface texture similar to ground glass. However, ordinary plastic surfaces are smooth and shiny, but prone to deformation and flammability, and are prohibited from being used in lamp production.

The second is to touch the temperature of the lamp. Under normal operating conditions, the temperature of the LED lamp should be relatively low. If the heat dissipation conditions are not good, and the lamp beads work at high temperatures, the lamp body will be hot, the light decay will also be significant, and the lamp life will be greatly reduced. At the same time, if the lamp flashes quickly when it is turned on and off, it also indicates that there is a quality problem

Third, listen to the sound of the LED lamp when it is working. Electromagnetic compatibility is a required item for electrical appliances. However, the testing of this item is very complex. When purchasing a lamp, users should check whether there is a national electromagnetic compatibility test mark on the packaging. A simple judgment can also be made through a small experiment. With a medium and short wave radio, when the LED lamp is operating, place 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, listen to the sound of the LED lamp when it is operating. If the sound of the lamp is clearly heard, it also indicates that the quality of the lamp is poor

Finally, remind consumers that when purchasing lamps, they must go to the regular store and purchase branded lamps. At the same time, after purchasing lamps, do not forget to ask for invoices, vouchers, or purchase receipts, and keep these vouchers well, so that there is evidence for complaints in the event of quality problems.