LED lighting purchase should be noted that five issues< br>led, lights, lighting, lamps, fluorescent, tubes, bulbs, cob, tcob, mcob, purchase, buy, price, reviews, sale, Core Tip: Because the durability, energy efficiency and better prices of LED lights, LED lamps are now more and more household favorite, but because LED lights are rapidly emerging this year, so many people is not very clear in what issues need attention when buying, below follow the small series to see.< br>First, note that the purchase certification mark How to buy LED lamps, electric light expert Yang Zheng said, consumers need to check whether the lamp has a clear product labeling and certification mark. Reporters learned that the current lighting certifications include 3C certification, CE certification, UL certification, GS certification. Among them, the most common are 3C certification and CE certification. I understand that, 3C certification that China Compulsory Certification, also known as the CCC. Household appliances, wire and cable must make this certification. CE certification is a mandatory requirement of EU law for the relevant product made by any provision of (the New Approach Directives involved) products, whether outside the EU or EU member states products, in order to free circulation in the EU market, before being placed on the EU market, it must comply with the relevant directives and harmonized standards, and affix the CE mark, and electrical products need to affix the CE mark. If the LED lamps are labeled with the logo represents the security properties of samples are certified. Yang Zheng tips when buying lamps, should also check whether the wire through the 3C certification. Second, check the product information is complete Good quality products trademark printing quality, even wipe with a soft damp cloth, it will not easily be erased. Yang Zheng reminder, you can view the font tag variable pattern is clear, strong wear (indelible), the position is correct and so on. And a complete luminaire tag should include the following information: 1, source (name and address, trademark, contact); 2, according to the standard (product standards, either express commitment indicator parameter); 3, the basic performance parameters ( replace incandescent equivalent descriptions, including electrical parameters including voltage, current, power, harmonic current and other indicators; including luminous flux, luminous efficacy parameters light beam angle indicators; color temperature and color rendering index of the color parameter; light failure, etc.) Third, the use of environmental requirements can not be ignored Yang Zheng said, lighting should also have specific environmental requirements, including lighting or ambient temperature range, specific operating temperature. Product labeling should also level against electric shock, dust-proof and waterproof clothing against solid level and so on. “Lamps should also have to use the installation instructions.” Yang Zheng said that similar warning notes and installation instructions material can not be ignored. For instance, some lamps only suitable for direct installation in a non-combustible surface. Fourth, seeing hand touch can also force shook He completed the above information and inspection work, Yang Zheng also advises consumers through touch and other ways to feel good or bad lighting quality. You can check the appearance of the product is not very rough? There is no glue is not clean? Is there a protruding screw fixed plane? Screw color is the color of the housing and consistent? There are no sharp edges or surface scratches? He said that from the appearance point of view, good lighting processing fine, pure color, surface flow layer integrity, and non-member link defects in appearance, size, and good consistency. In addition to looking outside, Yang Zheng said, lighting should have a certain resistance to external capacity, so when buying lamps, can be forced to shake, check if there are parts missing, loose phenomenon. Fifth, lighting fixtures observe the color and heat China Association of Lighting Industry experts pointed out that, according to the LED lights change color and thermal conditions to determine the merits of product quality. Color change was observed after the lamp is lit, and if in a short time, the yellow becomes white, or by a white light into a bluish white, experts do not recommend to buy such products. Experts point out that light emission color should be consistent, not blinking. After the LED lamp starting, can touch the product surface temperature detecting heat dissipation products. High-quality LED lamps in 30 minutes the temperature is stable, if the product within one hour surface temperature continues to rise, do not select the product, because the heat and other factors will affect the life of the product.