LED display fire cause analysis First, the power wire: the quality of the wire on the market is uneven, many wire spools are copper clad aluminum, the appearance looks like copper wire, the actual is aluminum alloy wire; this line is generally used for temporary use, can not be used at all On formal products. There are copper problems of copper wire, problems of insulation layer, and the problem of wire diameter (generally required to be equipped with 1.2 times or more of the maximum power of the display). If you neglect one of these problems, you will bury hidden dangers for later. a big disaster; Second, the power supply: quotes the inferior power supply, or maximizes the rated power of the power supply, resulting in long-term overload operation of the power supply (usually only 70% of the rated power of the power supply), and then the power cord terminal is inferior and contact is not Firmly, these may be the cause of fire hazards; Third, the PCB board: its own material is inferior, the copper is thin, the design is unreasonable, the process is poor, the copper wire has burrs and other phenomena will cause circuit short circuit, which becomes the root cause of fire hazard; Fourth, the heat dissipation system. The LED display works at high temperatures, and the heat dissipation problem becomes the first problem to be solved. If the design of the cooling air duct is unreasonable, it is easy to cause dust to accumulate on the fan main shaft, the power supply and the main board, resulting in poor heat dissipation, short circuit of the electronic components, and the fan is stuck, which may cause a fire. Fifth, service and maintenance. On the one hand, the display supplier did not systematically train the purchase customer, resulting in irregular operation. Another aspect is that the display supplier does not perform regular maintenance on the sold LED display, or the maintenance is not detailed in time, resulting in the inability to detect abnormal conditions in time. Based on the analysis and thinking of the cause of LED display fire, we will share with you the unique fire protection solution. First, the wire: LED display box internal integration, display, drive and receiver integration, simplifying the internal structure, only external power lines and signal lines, from the roots to prevent the line aging or damage caused by short-circuit hidden dangers. The power cord has always been a copper core wire that adopts domestic famous brands and passed the national 3C compulsory certification. It leaves enough space for power usage, and determines the wire diameter by 1.2 times the maximum operating current when the display is turned on. Give adequate protection; Second, the power: We use an exclusive custom power supply, strict control and screening of all materials. The rated power of the power supply is 1.4 times the power of the cabinet at full load. When the normal power supply is at 50 ° C, the efficiency will drop to 70%, and our power supply can still have 100% efficiency. Third, the PCB board. It adopts 4-layer board design, and the wiring is strictly in accordance with IEC/EN/UL60950 standard, and the maximum copper thickness is 4OZ. For PCB incoming inspection, we have a professional IQC team and a complete incoming inspection process to ensure zero burrs on each PCB board, effectively preventing potential safety hazards caused by short circuit of PCB board. Fourth, turbine cycle heat dissipation design and manufacturing process, firewall-type security barriers. The LED display should use a turbo cycle cooling system. When the power supply temperature reaches 50 °C, the turbine cooling system starts automatically, and the outdoor fan starts can be freely adjusted according to the use environment. At the same time, the top cover of the control box is a large-area all-aluminum fin cover, the power supply is directly mounted on the top, and the heat can be directly exported, which greatly improves the heat dissipation effect. Scientific thermal design and sophisticated manufacturing processes add firewall-style security barriers to the product. 5. The product has undergone rigorous reliability testing: we have the most complete laboratory and the largest employee training center in the industry. From the raw materials and the entire production process, we have strict quality control, the company's laboratories run 24 hours, and each batch of materials is sampled and tested; each link has a self-test system and safety system in charge, and each time regularly The staff of the post conducts operational specifications and quality awareness training and assessment. Sixth, the systematic service mechanism avoids the hidden dangers caused by improper operation and untimely maintenance. When the products are sold, we provide customers with standardized and meticulous operation training services to standardize various daily operations. If the customer has special requirements, provide professional technicians to install support on site. After the project is installed for one month, regular telephone calls will be made to find out the abnormal situation and solve it. When customers hold major events, we can send technicians to escort on site. From pre-training to post-maintenance to on-site escort, the one-stop service mechanism avoids potential safety hazards caused by improper operation or maintenance. Seven, authoritative safety certification, strict quality control. Should pass ISO9001: 2008 quality system certification, CCC, CE, FCC, TUV certification, and implement full staff, comprehensive quality management, implementation of meticulous quality control processes, from the expected delivery to all aspects of the shipment are controlled, not accepted, no Manufacturing, no defective products. Universal Wiring Harness,Universal Automotive Wiring Harness,Universal Car Wiring Harness,Universal Stereo Wiring Harness Dong guan Sum Wai Electronic Co,. Ltd. , https://www.sw-cables.com
LED screen fires frequently thinking about fire protection solutions
At the end of last year, the electronic screen of Guangzhou Baiyun Airport caught fire and suffered heavy losses. Recently, it was reported that the LED display from a certain brand in the WCBA Beijing venue burned out the smoke, which once again caused widespread concern in the industry and had to cause us to ponder. How to effectively avoid the LED display fire, improve product safety and stability, is placed in front of all LED display suppliers. As a provider of LED display solutions, we have to trace the source, analyze the main reasons for the LED display fire, give you a reference, and always alert yourself.