LED electronic display fire prevention is the top priority, in addition to the display itself heating and materials, installation and other factors, many human factors should also pay attention, here Sostron will talk about LED display fire precautions. How long can LED display be used? 6 ways to extend the life of LED displays
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4 factors will affect the safety and fire prevention of LED displays
The first point: in most display applications, the larger the unit area display of the display, the greater its power consumption, and the higher the requirements for the power stability of the cable. Among many wire products, the use of wire that meets the requirements of the national standard can ensure its safety and stability, and its requirements have three points: the wire core is a copper wire conductive carrier, the cross-sectional area tolerance of the wire core is in the standard range value, the insulation and flame retardancy of the rubber skin wrapped around the wire core meet the standard, compared with the general copper-clad aluminum core, the cross-sectional area of the wire core is small, and the insulation rubber grade is not enough, the energization performance is more stable, and it is not easy to occur short circuit;
The second point: UL certified power products are also the best choice when choosing similar products, its effective slew rate can ensure the safety and stability of the power load, and can also work normally in the case of hot external ambient temperature;
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The third point: in the material of the external protective structure of the display, most of the display products with higher fire rating on the market are made of fireproof aluminum-plastic panels, its excellent fire resistance, fire retardancy is also very strong, the oxygen aging performance of the core material special material is also very strong, the melting point temperature is 135 °C, the decomposition temperature is ≥ 300 °C, environmental performance, low smoke and halogen-free, in line with SGS, flame retardant B-S1, d0, t0, reference standard UL94, GB/8624-2006. Generally, the aluminum-plastic panel of outdoor display products ages rapidly with high temperature, rain, cold and hot shock, so that in the relatively humid climate season, rain dew is easy to penetrate into the inside of the screen body, resulting in short circuit of electronic components and fire;
The fourth point: display fireproof raw materials also have an important part, that is, plastic kit, plastic kit is mainly the unit module mask bottom shell use materials, the main raw materials are with flame retardant function PC+ glass fiber material, not only has flame retardant function, but also in high and low temperature and long-term use, no deformation, will not become brittle cracking, combined with the use of glue with better sealing, can effectively block the external environment of rainwater into the interior and cause short circuit fire.
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The external configuration and design of the LED display pay attention to fire safety
In addition to the internal raw materials will affect the fire effect, the external configuration and design is also very important, but the external configuration mainly involves heat dissipation in the fire prevention problem, in the LED display work at the same time will be configured exhaust fans and air conditioning to the inside of the screen body heat dissipation cooling, it is recommended to equip every 8-10 square 1P air conditioner to ensure that the temperature in the screen body remains normal and constant, air conditioning or exhaust fan configuration is not in place will cause uneven heat dissipation treatment, easy to lead to temperature increase caused by internal safety hazards of the screen body. At the same time, many LED companies in the box protection level test, only simply simulated the external environment spray waterproof test, waterproof effect durability and strength to be verified, so the display product after a period of use of water seepage occurs, which is an important reason why outdoor display screens are prone to fire or short service life. In response to thunderstorm weather, the screen body device arrester is also an essential tool to avoid lightning strikes and burn out the internal devices of the screen body, which can directly introduce lightning into the ground without affecting the screen body.
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The above are all internal reasons for the display screen, of course, we can not ignore the human factors in the later maintenance process, such as in the follow-up maintenance work, the operator did not follow the strict process flow (module screws are not tightened, wire polarity reversed, left conductive objects after operation, etc.), easy to cause fire. Under the premise that the entire industry standard has not yet been established, the market in various countries has also formulated relevant system regulations for the fire prevention of LED products, and enterprises in the industry can improve their product performance in accordance with relevant regulations to avoid the next "accident", thereby enhancing the competitiveness of the entire industry in the world and turning LED products to "intelligent manufacturing".
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