The color temperature of LED lamps with different powers is different. The color temperature of 3W LED bulb lamp is 6557K, that of 5W LED bulb lamp is 6226K, that of 3W aluminum shell LED bulb lamp is 2874K, that of energy-saving lamp is 7908K, that of blue LED desk lamp is about 9000K, and that of folding LED desk lamp is 9427K.
Liu Yi, an engineer at the Green Light Industry Testing Center of Beijing Institute of Metrology and Testing, said that four of the six sample lamps have a color temperature above 6500K, which is relatively high.
According to relevant standards, the color temperature is 2720K for incandescent lamp, 3450K for white lamp, 4040 for cold white lamp, 5000K for neutral white lamp and 6430 for fluorescent lamp. The color temperature of lamps can be selected according to personal preference. But if the color temperature is too high, the light emitted by the lamp will give people a pale and dazzling feeling, so it is not suitable for lighting.
Extended data:
Methods for identifying the quality of LED lamps;
1, introduced by Yan Huang, director of the Municipal Institute of Metrology, the life of LED lamps is directly related to the heat dissipation quality. From the experimental results, the high-quality LED lamp has little damage to the blue light radiation of eyes.
2. Yan Huang said that there are two tricks when buying: First, weigh the weight. The structure of high-quality LED lamps is relatively complex, and there are many components and materials. The second is to feel the temperature. Before buying lamps, you can generally try them on the spot. Because of the heat dissipation science, the surface of the bulb will not heat up after a good LED lamp is lit for a period of time, while the inferior LED lamp will obviously heat up after a few minutes.
3, high-quality LED lamp, lamp bead welding circuit is separated from power supply. Because the power supply will generate a lot of heat during the use of LED lamps, and the lamp caps of high-quality LED lamps are generally made of aluminum, which can effectively dissipate the heat generated by the power supply, thus protecting the power supply.
People's Network-Although-LED lights save energy, beware of blue light hurting eyes.