LED lamps are more and more popular and accepted by consumers because of their energy saving, high luminous efficiency and long life. However, the domestic LED lighting market is mixed, the product quality is very different, and a large number of inferior products are flooding the market. Consumers, how to identify the quality of the product, to ensure that they buy quality LED lighting products? In this regard, China Lighting Network reporters launched an investigation.
Professional testing agency: identification materials
Fang Fang, general manager of Guangdong Jinjian Testing Technology Co., Ltd. told China Lighting Network that the common quality problems of LED lamps in the testing process include vulcanization, chemical incompatibility, dead light and light decay. If it is vulcanization and chemical incompatibility, it is necessary to conduct an exhaustive inspection of 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 for the testing organization to determine whether the LED lighting products are qualified: the first one is the reliability test, which is used to identify the quality of the lamps through thermal shock and environmental simulation, but this method has a long time period (3-6 months), the price Expensive, but also can not 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.
Fang Fang also said that Jinjian Testing is the only company in China that launched the material identification method. The gold identification is located in the material and microstructure analysis. The test data can not only accurately identify the quality of the LED lamps, but also point out the defects of the products and the areas that need to be improved, and clarify the reasons for the responsibility. The customer can improve the quality of the lamp beads in a targeted manner.
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 engineering plastic flame retardant. Type, good quality material has a texture similar to frosted glass on the surface. Ordinary plastic surface is smoother 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, the light decay will be very large, and the lamp life will be high. It will be greatly reduced. At the same time, if the luminaire is lit and turned off, if there is a 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 must 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 and 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 middle, listening to the sound of the LED lamp work, if you can hear the sound of the lamp work very clearly, it also shows that the quality of the lamp is not good.
Finally, when reminding consumers to purchase 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. .