LED display application firewall technology analysis

With the rapid development of modern science and technology, the LED display industry continues to high-speed growth, industry scale, new technology constantly, the market share since 1993, with an average annual growth rate of 40% growth, however, on April 21, 2012, the Hong Kong from la hotel fire emergency, knocked a wake-up call for the LED industry: in the rapid development of the industry at the same time, the LED display application security technology remaining short board, LED products and standardization were again on the agenda. Especially LED display application technology of fire prevention safety focus, so today is thrilled to show everyone what factors will affect the display of fire safety problems.

displays the stand or fall of fire prevention technology mainly associated with display of fire prevention materials, box technology has a great deal.

the use of fire prevention materials mainly include display internal wire, power supply, fire prevention materials and plastic outer protective structure suite this four aspects:

the first point: in most of the display applications, the screen display unit area is larger, the power consumption, the greater the stability of wire electrical also have higher requirements. 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 smaller cross-sectional area, insulation rubber grade wire rod, electric performance is more stable, not easy to short circuit happens;

the second point: by the power of the UL products is the best choice when choosing a similar products, its effective conversion can guarantee safety and stability of power load, the external environment temperature hot cases, also can work normally;

the third point: in the display to the material aspect of the outer protective structure, high fire rating display on the market are mostly adopt fire prevention 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, in line with the SGS, flame retardant - B S1, d0, t0, reference use UL94 standard, GB / 8624 - 2006. General outdoor display products of aluminum-plastic plate with high temperature, the rain cold and hot shock aging faster, in the more humid climate season, the rain easily into the screen body internal cause short-circuit fire electronic components;

the fourth: display of fire prevention materials and an important part of the plastic package, plastic package is primarily a unit module mask pan, the use of materials is mainly use the raw material which has the function of flame retardant PC + glass fiber materials, not only has the function of flame retardant, better when under high and low temperature, and long-term use, not deformation, not brittle cracking, combined with good sealing glue used at the same time, can effectively block the external environment of rainwater in internal that cause a short circuit fire.

raw materials will affect the fire prevention effect, in addition to internal external configuration and design also is very important, but the external configuration mainly involve the fireproof problem of heat dissipation, at the same time in the display work can configure fan on the screen body internal heat cooling and air conditioning, every eight Suggestions 10 square 1 p air conditioning assembly, maintain normal temperature screen body temperature, and air conditioning or fan configuration does not reach the designated position will cause uneven cooling treatment, easy to cause the screen caused by temperature ascend body internal security hidden danger. At the same time, many LED companies in the enclosure protection grade test, simply to simulate the spray in the external environment of waterproof test, waterproof effect on the durability and strength to research, so cause the display products use after a period of time will have water seepage happens, this is outdoor display easy to fire or short service life of the important reasons. When dealing with the thunderstorm weather, lightning arrester screen device is also avoid lightning trueshot and burn out an essential tool for screen inside device, can be directly to thunder into the ground, and will not affect the screen body.

the above all belong to display the internal reason, of course, we also cannot ignore after-sales service in the process of man-made factors, such as in the follow-up maintenance work, the operator does not operate according to the strict process flow for homework ( Module screws have no matter, wire polarity reverse, homework legacy conductive objects, etc. ) , easy to cause fire.

the Hong Kong hotel display the exact cause of a fire incident has yet to be research, but also can't to Hong Kong for this incident of the LED display application hold negative attitude, while the industry standard has not been established, but the industry is doing better LED enterprises still have a lot, such as shenzhen chau Ming technology display products have won the British BS476 test center of construction material flame retardant fire test, chau Ming technology products, SMD outdoor module, outdoor lamp module) After the British Exova Warringtonfire testing center testing and through the British standard BS476, SMD outdoor fire rating of 2 module products ( Certificate number: 309548) Article, outdoor lamp module products fire rating to 1 ( Certificate number: 317177) 。 These international certification standard is the LED display products in the industry leader, we should be keeping up with the leading model of enterprise, with high quality, YanGuiGe to request oneself, to guide the healthy development of industry, so as to promote the industry's international competitiveness, towards internationalization.