Recently, Jiangsu Consumers Association released the results of the comparison test of reading and writing table lamps. Among the 173 batch lamps, all the indicators meet the requirements of only 3 batches, of which more than 80% of the desk lamps have too high color temperature, which may affect people's vision health.
The 173 batch samples of this comparative test, including 130 batches of LED table lamps, 29 batches of fluorescent light source lamps, and 14 batches of incandescent lamps (including tungsten halogen lamps), were from the physical markets in Jiangsu and Tmall, Jingdong and Suning. Easy to buy three major network channels.
The comparison test is based on GB/T9473-2008 "Technical Requirements for Reading and Writing Table Lamps", GB50034-2013 "Architectural Lighting Design Standards" and other related requirements. The power cord length, shading, color temperature, general color rendering, photometric requirements are five. A technical indicator is tested.
The test results show that there are only 3 batches of all the items of 173 batch lamps that meet the relevant requirements. The other 170 batches of lamps have substandard conditions in the five performance indicators.
According to the relevant standards, the relevant color temperature of the reading and writing work table lamp should not exceed 4000K. If the color temperature is too high, it will affect the comfort. If it exceeds 6500K, it may cause damage to vision.
The color temperature detection result of this table lamp is not ideal. With 4000K as the reference standard, the color temperature of only 30 batches of lamps does not exceed this standard. In other words, more than 80% of the lamps exceed this standard, and the color temperature is too high.
The comparison test also has a color temperature of 21 batches of lamps exceeding 6500K. It is worth noting that the color temperature of the DP long-time LED 670 lamps produced by Guangdong Jiuquan Co., Ltd., which was purchased by Suning Tesco's flagship store, was as high as 11,643K.
If the color rendering index of the light source is too low, the color of the object will not be displayed correctly, which has a great influence on the comfort, and it is easy to form visual fatigue and damage vision. According to the relevant standards, the LED color rendering index RA should be no less than 80. In this comparative test, there were 71 batches of table lamps, and the general color rendering index RA did not reach 80. Among them, there are 12 batches of table lamps, and the general color rendering index RA 70 has not been reached.
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