Poor quality LED Bulbs on the market
Today, LED lamps are everywhere, it has become a major public house lighting products. But LED bulb production process is simple, low barriers to entry, products on the market varies greatly. Yesterday, Nanjing Consumers Association on the local market of LED bulb conducted comparative experiments showed that: 42 Lot LED bulb, all batches identified instructions are not standard, almost half of the sample power indicators are not qualified, over 60% sample color rendering index are not qualified.
Power, luminous efficiency, color rendering index is influenced by three key performance indicators LED bulb quality. The experiment attained on a total of 42 batches of samples, all samples of the product itself power a label, but only 20 were granted light effect of rendering index of 17 batches of labels marked batches, including six batches of labels display index was below the detection standards. Therefore, all samples were subject exists the problem of incomplete identification.
It is understood, LED bulb replace incandescent lamp it is mainly used for indoor lighting, standard LED bulb to be replaced by labels incandescent power for consumers to choose. But in this comparison experiment, the label has only 25 lots, marked rate of less than 60%.
Color lighting quality is an important indicator in the standard lighting products, lighting products for indoor color rendering index should reach 80 or more. LED bulbs due to its blue chip emitting principle is to stimulate the yellow phosphor emit mixed light, and therefore contains a lot of blue component, the lack of red, resulting in high color temperature, display poor. Experimental officials said many of the market the number of LED bulb CRI is currently marked as 70, less than 80 labels. In this comparative experiment, 15 batches meet the standards, 27 batches of not up to standard requirements, the failure rate of over 60%.
Than the results showed that 42 batches of LED bulb, the power indicators in line with 23 batches, with a pass rate of 54.8% required; 40 batches, with a pass rate of luminous efficiency indicators meet the requirements of the standard 95.2%; color tolerance indicators in line with the requirements of 32 batches pass rate 76.2%.