LED display fire prevention knowledge popularization training
Time:2018-10-08
Views:298
LED electronic display screen, its structure includes external display screen, internal wiring, plastic kit, external protection and so on.Because of the complexity of the structure, there is still a lot of work to be done on the screen in terms of fireproofing.
1. Wire quality: in most LED display applications, the larger the unit area of the display screen, the greater the power consumption, and the higher the requirements on the electrical stability of the wire.In many wire products, used to meet the requirements of national standard wire to ensure the safe stability, it requires three things: wire core line of copper conductive carrier, core area of tolerance values in the standard range, package line core rubber insulation and flame retardancy to reach standard, compared with general copper clad aluminum wire core, wire core of smaller cross-sectional area and insulation level of rubber wire, electric performance is more stable, not easy to short circuit happens.
2. Power quality: UL certified power supply products are the best choice for selected LED electronic display power. The effective conversion rate can guarantee the safety and stability of power supply load, and it can work normally under the hot external environment.
Three, LED electronic display screen outer protective structure material: high fire rating on the market of LED display products are mostly used fire aluminum-plastic plate, its excellent fire resistance, fire retardant sex is extremely strong, core material is special oxygen aging resistance is strong, melting point temperature 135 ℃, the decomposition temperature of 300 ℃ or higher, environmental performance, low smoke zero halogen, accord with SGS flame retardancy B - S1, d0, t0, reference use UL94 standard, GB / 8624-2006.Generally, aluminum plastic plates with outdoor LED display aging rapidly with the impact of high temperature and cold and hot rain, making them easy to infiltrate into the interior of the screen, resulting in short circuit of electronic components and fire.
4. Plastic kit: LED electronic display plastic kit is mainly used as the material for the mask cover of unit module.The main raw material used is PC+ glass fiber material with flame retardant function, which not only has the flame retardant function, but also can not deform and become brittle and crack when used at high and low temperatures and for a long time. Meanwhile, it can be used in combination with well-sealed glue, which can effectively prevent rain water from penetrating into the interior of the external environment and thus cause short circuit fire.
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