Heat dissipation principle of outdoor advertising machine
Heat dissipation principle of outdoor advertising machine
There is no difference in function between outdoor digital signage and indoor advertising machine, but there is a big difference in structure. outdoor digital display refers to outdoor use affected by climate and temperature. The complexity of the internal structural accessories of outdoor LCD player is higher than that of general indoor advertising machines. Due to the heat generated by the high-brightness LCD screen itself and the sunlight, the outdoor digital screens can easily cause the black screen of the screen, so the heat dissipation of the high-brightness screen has become the most important problem. The heat dissipation is also reflected in the calculation of the air volume and air pressure of the outdoor advertiser's fan and the reasonable circulating air duct. The heat sinks used in outdoor digital advertising on the market are divided into: air cooling, heat exchanger cooling, and air conditioning cooling. So what is the cooling method and principle of the outdoor advertising machine? Let's find out!
1. The principle of air cooling and heat dissipation is to replace the internal hot air of the outdoor advertising machine with the external air, and then reach the cooling temperature, and the speed control board that cools the key components is the most important.
2. The principle of the heat exchanger is that the fan and the aluminum platinum sheet have high thermal conductivity, the internal temperature will be reduced, and its cooling effect will be worse than the real ventilation, the internal temperature and external temperature must be 15-20 ℃ temperature difference to carry out Heat transfer, but it has the advantage that the front can be dustproof and waterproof (without dehumidification).