Why the LED DIndoor Led Display isplay is on Fire?
With the popularity of LED display screens in indoor and outdoor display places, because of the quality problems and design defects of LED display screens, there are more and more fires, which pose great danger to the safety of person and the economy of customers. As the frequency of accidents increased, people began to conduct more in-depth analysis.
What is the cause of the fire on the LED display?
LED display screens have fire hazards, mainly due to some shortcomings in several major raw materials.
First, the wire. In most display applications, the larger the display per unit area of the LED display, the greater the amount of electricity used, and the higher the stability of the wire. Among the many wire products, the use of wire that meets the requirements of the national standard can ensure its safety and stability.
Second, the power supply. UL-certified power products are also the best choice when choosing the same type of products. The effective conversion rate ensures that the power supply load is safe and stable, and it can work normally even under the hot external environment.
Third, protective materials. The aluminum-plastic panel of the general outdoor LED display product aging faster with high temperature and rain and cold heat, so that in the relatively humid climate season, the rain dew easily penetrates into the screen body and causes short circuit of the electronic component to cause fire. In terms of the material of the outer protective structure of the LED display screen, most of the display products with high fire-proof grade on the market adopt fire-resistant aluminum-plastic composite board, which has excellent fire resistance and strong fireproof and flame retardancy.
Fourth, the plastic frame. The plastic frame is mainly used for the bottom cover and mask of the unit module. The main raw material is the PC glass fiber material with flame retardant function. It not only has the flame retardant function, but also can not be deformed and cracked under high and low temperature and long-term use. At the same time, it can be combined with the glue with better sealing performance, which can effectively block the rainwater from the external environment penetrating into the interior and causing a short circuit to cause fire.
In addition to the internal raw materials that affect fire protection, external design such as heat dissipation is also very important. The outdoor LED display works at high temperature, and the power consumption is a big test. If it is a large LED display, it increases the difficulty of heat dissipation. In the past, large outdoor LED screens were supplemented with electric fans, and developed into installing internal self-contained air-conditioning facilities later. In addition, we cannot ignore the factors caused by the post maintenance project. In short, we should take care of the problems of the fire protection of LED displays.
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