On 2017.4.9, we saw a tragedy caused by LED screen,so I want to discuss with you that why it will cause fire.
There are serval reasons to cause fire:
1、the wire: wire rod market varies. A lot of lowe-grade copper clad aluminum wire spools are seemingly copper, but in reality it is aluminum. This wire can only be used with temporary and can’t be used in regular products. What’s more, the quality of cooper, the insulating layer, diameter size(generally the maximum power required by the display with more than 1.2times), these areas as long as there is one mistake. It may be buried security risk.
2、 the power source: use inferior power, or that power is too small, long-term power overload operation;
3、 the PCB board: inferior materials, copper and thin, poorly designed, resulting in poor process copper burrs and other phenomena will produce a short circuit, a source of fire hazards;
4、 cooling system: LED display outdoor display particularly long period under high temperature, the heat problem is the primary problem. Such as cooling duct design is unreasonable, easily lead to the accumulation of dust on the fan shaft, power supply and motherboard, resulting in poor heat dissipation, short circuit electronic components, fan stuck, causing a fire.
5、 service and maintenance: one is the display screen supplier to the customer service is not in place no systematic training display function, leading to customer operations are not standardized; on the other hand is the display screen suppliers have not sold display Regular maintenance is not detailed or not timely maintenance, making it impossible to detect anomalies.
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