LED bulbs have always been regarded as a substitute for incandescent and energy-saving lamps because of their light efficiency and energy saving advantages. However, today, the results of the comparison test of LED bulbs released by Nanjing Consumers Association show that the 42 batches of 37 brands have been completely annihilated, and the failure rate is 100%.
This comparative experiment involves 37 brands such as Philips, Osram and Op, which mainly detect product identification, power, light efficiency and color rendering index. The color rendering index is the ability of the bulb to restore color. The luminous efficiency is the luminous flux. The color rendering index, light efficiency and power are the three key indicators that affect the performance quality of the LED bulb. The test results show that the pass rate of power indicator is 54.8%, the pass rate of light effect index is 95.2%, and the pass rate of color rendering index is only 35.7%.
Xu Ming, vice president and secretary general of the Nanjing Consumers Association, said that none of the 42 batches could meet the relevant national mandatory standards. Mainly reflected in the product labeling, the first problem is that the information is incomplete. The label is not labeled. Although some brands are marked, they are quite different from the measured data, and there are suspicions of virtual standards.
For example, LED bulbs should identify the corresponding power number of an alternative incandescent lamp, but some LED bulbs have a large difference between the nominal and measured measurements. Huang Ruxi, executive deputy director of the National Light Industry Electric Light Source Materials Quality Supervision and Inspection Center, said that the virtual standard is several times. The LED light is mixed with a blue chip and an external yellow phosphor to produce white light. The main problem is that the blue light source will cause damage to the human eye. According to national regulations, the color temperature of LED lighting can not be greater than 4000K. However, due to the high light efficiency of the high color temperature LED light source, the cost is relatively low, and there are many high color temperature products on the market. Xu Ming said that working in such a light environment for a long time will cause yellow spots on the eyes and cause irreversible damage. Consumers are advised to purchase LED bulbs first, and then choose to purchase them from regular merchants. At the same time, it is necessary to check the product identification labels. For the power of replacing incandescent lamps, do not know the LED light source with color temperature over 4000K.
Butt Connector,Lugs Insulated Female Connectors,Insulated Female Connectors,Non-Insulated Spade Terminals Wire Connector
Taixing Longyi Terminals Co.,Ltd. , https://www.longyiterminals.com