How to prevent moisture and heat from LED display?

May 12, 2020
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For outdoor LED display screens, there is no doubt that the spring and summer seasons of the year are challenging. Humid and high temperature weather makes the LED screen moisture-proof and heat-dissipating confront the natural contradiction. Now that it is the rainy season and high temperature in the south, how to do moisture-proof work in rainy weather and maintain good heat dissipation in high-temperature environments has become a thorny problem facing outdoor LED displays.


How to prevent moisture and heat from LED display


1. Moisture and heat dissipation, a pair of natural contradictions

The internal components of the LED display are MSD components (moisture-sensitive devices). Once moisture enters, it is likely to cause oxidation and corrosion of zero devices such as lamp beads, PCB boards, power supplies, etc., and then cause dead light failure. Therefore, the module, internal structure and external chassis of the LED screen need to be designed with a comprehensive and strict moisture-proof and waterproof design.

At the same time, the internal components of the full-color LED screen are also the electronic components that generate the most heat, such as LED lamp beads, driver ICs, and switching power supplies. Poor heat dissipation design will oxidize the screen material, affecting quality and life. If the heat is concentrated and cannot be dissipated, it will cause the internal components of the LED to overheat and be damaged, causing failure. Therefore, good heat dissipation requires a transparent, convection structure, which contradicts the requirements of moisture resistance.

Second, how to do the moisture and heat dissipation of the LED display at the same time

High temperature and humidity, how to achieve two-pronged approach?

In the hot and humid weather, facing the moisture and heat dissipation, this seemingly irreconcilable contradiction can actually be solved by superb hardware and elaborate structural design. 

 

(1) Reducing power consumption and reducing heat loss are effective ways to improve heat dissipation capacity. Sansi selects high-quality LED chips for optimization design from the source, and pays attention to the independent development of high-efficiency and high-quality driving power. The outstanding raw material quality and excellent performance parameters lay a firm foundation for heat dissipation and moisture resistance.

(2) Improving the production process of modules is also a top priority. It is understood that the structural optimization of the electronic components of the PCB board is simplified, rationally arranged, and the material is sealed with high thermal conductivity material to seal, and at the same time meet the seamless access of water vapor and the heat dissipation requirements of the components.

(3) Reasonable optimization of the cabinet structure can play a key role. Considering the heat dissipation and oxidation resistance of the chassis material, high-quality aluminum is selected. The interior of the chassis adopts a multi-layer space structure to form an overall transparent convection heat dissipation structure, which can fully utilize natural air for convection heat dissipation, taking into account both heat dissipation and sealing. , Also improved reliability and service life.