Fire Analysis of Folding Display
Fire raw materials include the use of display screen wire, power supply, external protective structure of fire-resistant materials and plastic kit in these four areas:
First point: In most of the display screen applications, the larger the display area of the display unit, the greater its power consumption, the stability of the power wire also has higher requirements. Many wire products, the use of wire in line with the requirements of the national standard to be able to ensure its safety and stability, which requires three points: the core is a copper conductive carrier, the core cross-sectional area tolerances in the standard range of values, And flame retardancy to achieve the standard, compared to the general copper clad aluminum core, the core cross-sectional area is small, the insulation grade of the wire is not enough, the power performance is more stable, not prone to short circuit
Second: UL certified power supply products are also the best choice for similar products, the effective conversion rate to ensure the safety and stability of the power load, the external environment in the hot conditions, but also work
Third point: In the display screen external protective structure of the material, the market fire rating higher display screen products are mostly fireproof aluminum-plastic panels, the fire resistance is excellent, fire retardant is also very strong, the core material oxygen Aging performance is also strong, the melting point temperature of 135 ℃, decomposition temperature ≥ 300 ℃, environmental performance, low smoke and halogen-free, in line with SGS, flame retardancy B-S1, d0, t0, reference standard UL94, GB / 8624-2006. General outdoor display products with high temperature aluminum panels, hot and cold impact of aging rain faster, so that in the wet season of the season, rain easily penetrate the interior of the screen lead to electronic components caused by a short circuit;
Fourth point: there is an important part of display screen fireproof raw materials, that is, plastic kit, plastic kit is the main unit module cover the bottom shell of the use of materials, the main raw material is a flame retardant PC + glass fiber material, not only has the resistance Burning function, more in high and low temperature and long-term use, no deformation, will not become brittle cracking, combined with good sealing glue can effectively block the external environment of the rain into the interior to cause a short circuit fire .
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 is mainly related to the fire in the cooling, the display screen will be equipped with exhaust fans and air conditioning on the inside of the screen cooling, It is recommended that an air conditioner with 1P be installed every 8-10 square feet to ensure that the temperature inside the screen remains normal. If the air conditioner or exhaust fan is not properly installed, the heat dissipation may not be uniform, which may easily lead to potential safety problems in the screen due to temperature increase. At the same time, many LED companies in the protection of the cabinet level test, just a simple simulation of the external environment in the shower waterproof test, the persistence and strength of waterproof effect to be verified, resulting in the use of the display screen after a period of time there Water seepage occurs, which is an important reason for outdoor display screen prone to fire or short service life. In response to thunderstorm weather, the screen body arrester is also an indispensable tool to avoid lightning strikes and burn-in the internal components of the screen body, you can direct the lightning into the ground, without affecting the screen body.
