After years of experience in the development of full-color LED display screens, Zhongrun Optoelectronics has summarized the main problems of outdoor LED screens as follows:
(1) LED display screens are installed outdoors and are often exposed to the sun, rain, wind and dust, and have a harsh working environment. Electronic equipment that is wet or severely damp can cause short circuits or even fires, leading to failures or even fires, causing losses;
(2) LED display screens may be attacked by strong electricity and strong magnetism caused by lightning;
(3) The ambient temperature changes greatly. The display screen itself generates a certain amount of heat when it is working. If the ambient temperature is too high and the heat dissipation is poor, the integrated circuit may not work properly or even be burned, making the display system unable to work properly;
(4) The audience is wide, the viewing distance and the field of view are required to be long; the ambient light changes greatly, especially the possibility of direct sunlight.
In view of the above special requirements, outdoor LED display screens must meet the following requirements:
(1) The screen body and the joints between the screen body and the building must be strictly waterproof and leakproof; the screen body must have good drainage measures so that once there is water accumulation, it can be discharged smoothly;
(2) Lightning protection devices should be installed on the LED display screen and the building. The display screen body and shell are well grounded, with a grounding resistance of less than 3 ohms, so that the large current caused by lightning can be discharged in time;
(3) Install ventilation equipment to cool down the screen so that the internal temperature of the screen is between -20℃ and 50℃. An axial fan is installed on the upper back of the screen to discharge heat;
(4) The display medium uses a new wide-angle tube with a wide viewing angle, pure color, consistent coordination, and a lifespan of more than 100,000 hours. The outer package of the display medium is the most popular square cylinder with a shielding edge, silicone seal, and non-metallic assembly; its appearance is exquisite and beautiful, sturdy and durable, and has the "five protection" characteristics of protection against direct sunlight, dust, water, high temperature, and circuit short circuit.