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The LED display used as an outdoor advertisement has a much higher requirement for the use environment than the general display. In the process of using the outdoor LED display, due to the different environments, it is often affected by bad weather such as high temperature, typhoon, heavy rain, lightning, etc. To make the display screen safe in the bad weather, what preventive measures should we do?
First, anti-high temperature
The outdoor LED display usually has a large area. During the application process, the power consumption is large, and the corresponding heat is also generated. In addition, the external temperature is high. If the heat dissipation problem cannot be solved in time, the circuit board may be short-circuited. And other issues. In production, ensure that the display circuit board is in good condition. When designing the outer casing, choose a hollow design to help dissipate heat. In the installation, according to the situation of the device, insist that the condition of the display is good, and the heat dissipation equipment is added to the display when needed. For example, an air conditioner or a fan is installed inside to help the display to dissipate heat.
Second, anti-typhoon
The installation position of the outdoor LED display is different, and the installation method is also different. There are wall-mounted, inlaid, column-type, and hanging type. In the typhoon season, in order to prevent the screen of the outdoor LED display from falling, there is a strict requirement for the load-bearing steel frame structure of the display. The engineering unit must design and install in strict accordance with the standard of typhoon resistance. At the same time, it must have certain anti-seismic capability to ensure that the outdoor LED display will not fall and cause injury and death.
Third, anti-storm
There are many rains in the south, so the LED display itself must have a high degree of waterproof protection to avoid rain erosion. In the outdoor environment, the outdoor LED display should reach IP65 protection level. The module should be filled with glue, and the waterproof box should be used to connect the module and the box with waterproof rubber ring.
Fourth, lightning protection
1. Direct lightning protection: If the outdoor LED large screen is not within the direct lightning protection range of the nearby tall buildings, a lightning rod should be placed at or near the top of the display steel structure;
2, inductive lightning protection: outdoor LED display power system to do 1-2 power supply lightning protection, signal line installed signal lightning protection, while the machine room power system to do 3 level lightning protection, signal out / into the room equipment end plus Install a signal lightning arrester;
3. All LED display lines (power and signal) should be shielded from buried ground;
4. The front end of the outdoor LED display and the grounding system of the equipment room should meet the system requirements. Generally, the grounding resistance of the front end should be less than or equal to 4 ohms, and the grounding resistance of the equipment room should be less than or equal to 1 ohm.
Do a good job of the above protective measures, no matter how bad the environment, the outdoor LED display can also run safely and safely.