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2. The core difficulty of thermal design of outdoor advertising machine.

As a national high-tech enterprise deeply engaged in the research and development of outdoor LCD advertising machines, Ruiguan believes that the essence of thermal design is to realize the dynamic balance between heat and environment in extreme environment, and the following factors should be comprehensively considered:

Environmental adaptability: -40℃~55℃ temperature difference, salt spray, dust, humidity, etc.

Optical performance protection: avoid the light attenuation and color cast of LCM module caused by high temperature;

System reliability: dustproof and waterproof (IP55/IP65), low failure rate and long service life (≥ 50,000 hours);

User experience: low noise, easy maintenance and remote temperature control management.

3. Comparison and technical breakthrough of mainstream cooling schemes for LCD advertising machines.

1). Air-cooled heat dissipation type (FAU)

Principle: The LCD advertising machine uses the cold air from outside to exchange heat, and then discharges the heat to the outside. The applicable working temperature is -20~+45℃. Used for cleaner environment. Such as residential areas, business districts, etc.

Advantages: LCD advertising machine is light and thin, low power consumption, controllable cost and IP55 protection.