Interpretation of 3W bulb lamp CLEAR test report color temperature real standard rate is only 65%
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The test data shows that there are 4 types of color temperature parameters not indicated on the outer box, and there are 10 models marked with general (warm white/white/white/cool white). There are 26 actual color temperature parameter values, and the real standard rate It is only 65%; among them, there are 11 products whose measured value differs from the identification value by more than ±250K.
"The consistency of color temperature is well controlled, and the cost will be increased accordingly." Dr. Fu Xiaohui, general manager of Shenzhen Huagao Optoelectronics Technology Co., Ltd. said that to ensure the consistency of color temperature of the product, the corresponding light source and lens should be strictly The control, the corresponding process will also require higher.
In response to the generalization of color temperature labeling in some enterprises, the reporter interviewed a number of people in the industry. They all said that this concept is relatively vague with the concept of warm white, white, and cool white in the industry. There is no uniform definition scope, which leads to some Manufacturers drill holes.
An industry insider said, "The scope of such a logo is wider. For example, 4000-6000K can be marked as cool white, and it will not be ignored. Moreover, there is no mandatory national standard for labeling color temperature or how to standardize labels."
Cai Ming, general manager of Jiangsu Shifu Photoelectric Technology Co., Ltd. believes that this is also related to the current lack of understanding of LED lighting parameters by ordinary consumers. "Ball bulbs mainly go to the civilian market. Ordinary people are not sensitive to these parameters of color temperature. They only know white light and warm white. The best way is to mark the white temperature, warm white and so on with the specific color temperature parameters."
The test report also shows that among the 40 products tested, there are 14 models with color temperature exceeding 6500K. The color temperature of the plated beauty 5W bulb lamp of Zhongshan Mingmei Lighting Co., Ltd. of Guangdong Province is as high as 9122K, Zhongshan Mingpu Lighting Co., Ltd. Bright and beautiful QP014 super bright 3W LED bulb color temperature reached 8284K. Fu Xiaohui believes that products with a color temperature of more than 6500K will have more blue components, but it does not mean that there is a blue light hazard.
It is understood that when the color of the light emitted by the light source is the same as the color of the black body at a certain temperature, the temperature of the black body is called the color temperature of the light source. The industry also popularizes the light color of the day to change the reference value of the color temperature over time: 40 minutes after sunrise, the light color is yellower, the color temperature is about 3,000K; the midday sun is white, rising to 4,800-5,800K, cloudy noon It is about 6,500K; the light color is reddish before sunset, and the color temperature drops to about 2,200K.
Different occasions have different requirements for color temperature. Xu Shuhua, an ophthalmologist at Haihe Hospital, said that in general, the commonly used color temperature is 2700K, which is the color temperature of ordinary incandescent lamps. It looks warm, but not bright enough for bedroom bedside. Local illumination such as wall lamp; 3000K is the color temperature closest to natural light, suitable for the overall lighting design in the home; 3400K is white light, which can make people concentrate and is suitable for office, study and other places.
2013 fifth round CLEAR plan LED bulb light color temperature test results publicity 
(Note: blue is the online shopping product, yellow is the product without label, self-defined number) 