According to reports, last year Shijiazhuang buried light and rain in the night caused three deaths and four injuries. Recently, Jiaxing Zhou of Zhejiang Province went to the park for three nights. After the 4-year-old son accidentally fell, his hand was burned by the underground light on the ground. A large bubble was diagnosed as "second degree burn". According to this kind of situation, the author went to the hospital to carry out relevant knowledge. There are not many people who come to the hospital for such incidents, and most of the burns are in the second degree. Director Zhang of the Burns Department of the hospital also introduced us to the knowledge of burns: burns are generally divided into three grades, and recognition of burn grades is more helpful for first aid. Burns can be divided into one degree burn (erythetic, reddened skin) 50 ° C; second degree burn (bubble, blisters in the affected area) 75 ° C; third degree burn (necrotic, skin cut) 90 ° C. Do not rub the toothpaste after burns, as this will increase the level of burns. To this end, I found a manufacturer specializing in the production of outdoor lighting----Zhejiang Jingri Lighting Technology Co., Ltd., and asked their engineer Zhao Gong to randomly make a simple test on the buried lamps of the city park, test time 19: 00, test lamps: buried lights, test results are as follows:
As can be seen from the left figure, the center temperature of the lighting fixture is up to 86 ° C, even if the temperature of the surrounding stainless steel cover is as high as 73 ° C. Under such high temperature, if it is accidentally touched, the burn is unavoidable. Zhao Gong told us that the high-temperature lamps are mostly metal halide lamps, which have poor heat dissipation and severe glare. When people are close, they are very glaring, and the author has visited the on-site application of the LED underground light of JSR5. Test comparison.
Temperature test
Glare test
From the above picture, it is not difficult to find that the JRD5 buried lamp of Zhejiang Jingri Lighting has a center temperature of only 38 degrees when working, and the surrounding stainless steel cover temperature is only 32 degrees, and there is no strong glare when approaching. Zhao Gong said that this is the characteristics of LED products with good heat dissipation and good anti-glare. In addition to the high temperature hazard, Zhao Gong reminded that because outdoor lighting is used in public places, it is easy for the public to access. Therefore, the leakage protection requirements of the lamps are particularly important. The use of Zhejiang Jingri lighting products in test lamps Leakage protection technology and grounding treatment greatly improve the safety of the luminaire, while largely avoiding the occurrence of malignant events.
Through this series of understanding, the author believes that if the unit can use the safer and more scientific products while adding color to the city, it can reduce many safety hazards and bring a more humanized lighting environment to the citizens. .
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