How to waterproof and moisture-proof LED display in rainy season? After mid-to-late May, the "plum rain weather" came as scheduled, and the phenomenon of heavy rain flooding the city continued to take place. We know that the lamp beads of the display are MSD components (humidity sensitive devices), so this wet and rainy weather is a big challenge for full-color LED displays. So how to deal with the problem of moisture ingress or even water ingress in the LED display during the rainy season?
The challenge of the climate in southern China to LED display devices in summer
LED display should pay attention to ventilation and dehumidification
For indoor display screens, first of all, moderate ventilation. Proper ventilation can help the water vapor attached to the display to evaporate quickly and reduce the relative humidity of the indoor environment. However, avoid ventilation in some windless and humid air, which will increase the indoor humidity; secondly, place a desiccant indoors and use physical moisture absorption methods to reduce the moisture in the air; or turn on the air conditioner to dehumidify, if the display If an air conditioner is installed in the installation space, the air conditioner can be turned on for dehumidification in humid weather.
LED display focuses on waterproofing
The environment of the outdoor LED display itself is more complicated than that of indoors, and indoor methods can be used to prevent moisture, but the outdoor display must not only consider the problem of moisture, but also do daily maintenance work such as waterproofing, especially in the rainy season, so it is good The sealed installation can help the display reduce the risk of water ingress, regularly clean the dust attached to the inside and outside of the display, and also help the display better heat dissipation and reduce the adhesion of water vapor.
Moisture entering may cause outdoor LED display dead light
So the most important thing is that the most important thing about outdoor full-color LED display waterproofing is prevention during production and construction.
In the process of use, excessive humidity causes the PCB board, power supply, power cord and other components of the LED display to be more likely to be oxidized and corroded, and cause failure. So this requires that when we make LED displays, the PCB boards should be treated with anti-corrosion, such as coating the surface with three-proof paint, etc., and high-quality accessories should be used for the power supply and power cord. The selected waterproof box has good airtightness, and the screen must reach IP65. Welding is the place most likely to be corroded. Pay attention to the protection work, especially the frame, which is easy to rust, and do a good job of anti-rust treatment.
Secondly, for different unit board materials, professional waterproof coatings are needed. Here is an example of a P10 full-color outdoor LED display. First of all, confirm whether the P10 full-color outdoor unit board is magnetized or screwed (the screwing effect is good, the magnet is slightly worse); secondly, whether there is a waterproof groove on the unit board kit, if there is, the front waterproofing is basically not a big problem, even The unit board is fixed with magnets, there is no problem. Finally, we also need to pay attention to the waterproof problem of the backplane of the outdoor LED display, because in the process of using the display, the backplane LED display is not only a heat dissipation treatment, but also a great convenience in dealing with the waterproof performance. sex. When dealing with the waterproof coating on the back, pay more attention to the waterproof performance of the small strip-shaped display aluminum-plastic panel on the back. Use an electric drill to design a row of drains under the aluminum-plastic panel, which is beneficial to the waterproof of the display and the heat dissipation of the display. The best display processing method.
The other part needs to be implemented in the concrete construction site; in the structural design, prevention and drainage are combined; after the structure is determined, according to the characteristics of the structure, it can be considered to have a hollow bubble tube structure, a small compression set rate, and a breaking elongation rate. Sealing strip material with large performance; after selecting the sealing strip material, it is necessary to design a suitable contact surface and contact force according to the characteristics of the sealing strip material to make the sealing strip squeeze to a dense shape. In some installations, waterproof grooves and other locations, do key protection to ensure that there is no accumulation of water inside the display. Only in this way can the display screen be used in the rainy season without any quality problems caused by human factors.
Indoor LED displays in high temperature and high humidity areas need to be dehumidified frequently
Finally, whether it is an indoor screen or an outdoor screen, the most effective way to avoid damage to the function of the display is to use it frequently. The display itself in the working state will generate some heat, which can evaporate some water vapor, which greatly reduces The possibility of a short circuit caused by moisture. Therefore, the display screen that is frequently used has much less impact on the humidity of the display screen that is not commonly used. Industry insiders suggest that the LED screen display should be used at least once a week during the rainy season, and the screen should be turned on at least once a month for more than 2 hours.
In addition to the installed LED display screens should pay attention to waterproof and moisture-proof in the rainy season, the engineering contractors and distributors also need to understand the treatment methods of the LED display screens entering the warehouse.
