What affects the fire protection technology of LED displays?
What affects the fire protection technology of LED displays?
The effect of LED large screen fire prevention technology is mainly associated with the display screen fire prevention raw materials, box process. Fireproof raw materials mainly include LED display internal materials and external configuration to analyze two aspects.
1.LED display internal material analysis
(1) in most of the display applications, the larger the unit area of the display, the larger the power consumption, the stability of the wire also has higher requirements. Numerous wire products, the use of wire in line with the national standard requirements to ensure its safety and stability, the requirements of three points: the core for the copper conductive carrier, core cross-sectional area tolerance in the standard range of values, wrapped in the core of the insulating skin and flame retardant to meet the standard, compared to the general copper-clad aluminum core, core cross-sectional area is small, the insulating skin level of the wire is not enough, the performance of the energization is more stable, less prone to short-circuit Situation;
(2) UL certified power supply products are also the best choice when choosing similar products, its effective conversion rate to ensure that the power load is safe and stable, in the external ambient temperature is hot, but also can work normally;
(3) in the display of the external protective structure of the material, the market fire rating of the display products are mostly fireproof aluminum composite panel, its fire resistance is excellent, fire retardant is also very strong, the core material special material oxygen aging performance is also very strong, melting temperature of 135 ° C, the decomposition temperature of ≥ 300 ° C, environmental performance, low-smoke, non-halogen, in line with the SGS, fire-retardant B-S1, d0, t0, reference to the use of standards UL94, GB/8624-2006. General outdoor display products of aluminum composite panels with high temperature, rain, cold and heat shock aging faster, so that it is in the more humid climate seasonal segments, rain and dew can easily penetrate into the interior of the screen body leading to short-circuiting of electronic components caused by fire;
(4) display fire raw materials there is an important part of the plastic parts, that is, the plastic parts are mainly unit module mask bottom shell of the use of materials, the main raw material used is a flame-retardant function of the PC + fiberglass material, not only has a flame-retardant function, but also in high and low temperatures and long-term use, does not deform, will not become brittle and cracked, and at the same time combined with the sealing of the use of glue, can effectively block the external environment of rainwater penetration into the internal, thus causing a fire. At the same time, combined with the use of better sealing glue, can effectively block the external environment of the rain penetrate into the internal, thus causing a short circuit fire.
2.LED display external configuration analysis
In addition to the above analysis of the internal raw materials will affect the fire prevention effect, the external configuration and design is also very important, then the external configuration affects the LED display fire prevention technology elements are summarized:
(1) the external configuration and design of the LED screen fire safety impact. The external configuration mainly touches on the fire problem in the heat dissipation, in the display screen work at the same time will configure the exhaust fan and air conditioning on the screen body to stop internal cooling, the initiative of every 8-10 square assembly 1P air conditioning to ensure that the temperature inside the screen body to adhere to the normal temperature, the air conditioning or the exhaust fan is not configured in place will form the heat disposal is not average, easy to incur due to the temperature rise and caused by the screen body internal peace hidden danger. At the same time a lot of LED enterprises in the stop box protection level test, just simply imitate the external environment spray waterproof test, waterproof effect durability and strength to be proved, so the formation of products used in the screen after a period of time on the seepage of the situation occurs, which is easy to outdoor screen fire or short service life of the important reasons.
(2) high-quality equipment, for the LED display now product safety as a result of the LED screen fire is generally caused by the consumption of improper installation and the formation of unqualified raw materials, such as articulation part is not strong, falling, polarity reversal, wire is not up to standard, other raw materials are unqualified, flame retardant value is not enough, and so on. Therefore, in the LED screen consumption and installation after the end of the need to stop strict inspection can be used. As the LED screen belongs to electronic products, its main material in a part of the combustible material, so we must basically start “prevention is better than cure”, using high-quality power supply, wire, IC, articulating devices and other combustible devices, reduce the failure rate, and control the probability of fire of the LED screen.
In short, only a clear understanding of the elements affecting the LED display fire prevention technology, the relevant enterprises can according to the relevant rules to enhance their product performance, to prevent the occurrence of accidents due to the LED display fire prevention technology problems, and then enhance the competitiveness of the entire LED industry in the international arena.
1.LED display internal material analysis
(1) in most of the display applications, the larger the unit area of the display, the larger the power consumption, the stability of the wire also has higher requirements. Numerous wire products, the use of wire in line with the national standard requirements to ensure its safety and stability, the requirements of three points: the core for the copper conductive carrier, core cross-sectional area tolerance in the standard range of values, wrapped in the core of the insulating skin and flame retardant to meet the standard, compared to the general copper-clad aluminum core, core cross-sectional area is small, the insulating skin level of the wire is not enough, the performance of the energization is more stable, less prone to short-circuit Situation;
(2) UL certified power supply products are also the best choice when choosing similar products, its effective conversion rate to ensure that the power load is safe and stable, in the external ambient temperature is hot, but also can work normally;
(3) in the display of the external protective structure of the material, the market fire rating of the display products are mostly fireproof aluminum composite panel, its fire resistance is excellent, fire retardant is also very strong, the core material special material oxygen aging performance is also very strong, melting temperature of 135 ° C, the decomposition temperature of ≥ 300 ° C, environmental performance, low-smoke, non-halogen, in line with the SGS, fire-retardant B-S1, d0, t0, reference to the use of standards UL94, GB/8624-2006. General outdoor display products of aluminum composite panels with high temperature, rain, cold and heat shock aging faster, so that it is in the more humid climate seasonal segments, rain and dew can easily penetrate into the interior of the screen body leading to short-circuiting of electronic components caused by fire;
(4) display fire raw materials there is an important part of the plastic parts, that is, the plastic parts are mainly unit module mask bottom shell of the use of materials, the main raw material used is a flame-retardant function of the PC + fiberglass material, not only has a flame-retardant function, but also in high and low temperatures and long-term use, does not deform, will not become brittle and cracked, and at the same time combined with the sealing of the use of glue, can effectively block the external environment of rainwater penetration into the internal, thus causing a fire. At the same time, combined with the use of better sealing glue, can effectively block the external environment of the rain penetrate into the internal, thus causing a short circuit fire.
2.LED display external configuration analysis
In addition to the above analysis of the internal raw materials will affect the fire prevention effect, the external configuration and design is also very important, then the external configuration affects the LED display fire prevention technology elements are summarized:
(1) the external configuration and design of the LED screen fire safety impact. The external configuration mainly touches on the fire problem in the heat dissipation, in the display screen work at the same time will configure the exhaust fan and air conditioning on the screen body to stop internal cooling, the initiative of every 8-10 square assembly 1P air conditioning to ensure that the temperature inside the screen body to adhere to the normal temperature, the air conditioning or the exhaust fan is not configured in place will form the heat disposal is not average, easy to incur due to the temperature rise and caused by the screen body internal peace hidden danger. At the same time a lot of LED enterprises in the stop box protection level test, just simply imitate the external environment spray waterproof test, waterproof effect durability and strength to be proved, so the formation of products used in the screen after a period of time on the seepage of the situation occurs, which is easy to outdoor screen fire or short service life of the important reasons.
(2) high-quality equipment, for the LED display now product safety as a result of the LED screen fire is generally caused by the consumption of improper installation and the formation of unqualified raw materials, such as articulation part is not strong, falling, polarity reversal, wire is not up to standard, other raw materials are unqualified, flame retardant value is not enough, and so on. Therefore, in the LED screen consumption and installation after the end of the need to stop strict inspection can be used. As the LED screen belongs to electronic products, its main material in a part of the combustible material, so we must basically start “prevention is better than cure”, using high-quality power supply, wire, IC, articulating devices and other combustible devices, reduce the failure rate, and control the probability of fire of the LED screen.
In short, only a clear understanding of the elements affecting the LED display fire prevention technology, the relevant enterprises can according to the relevant rules to enhance their product performance, to prevent the occurrence of accidents due to the LED display fire prevention technology problems, and then enhance the competitiveness of the entire LED industry in the international arena.