Outdoor installation of LED display is different from indoor installation. The conditions are difficult. There are certain requirements and treatment methods for the components, installation methods and environment of LED display
(1) LED display screen is installed outdoors, often in the sun and rain, wind and dust cover, the working environment is bad. If the electronic equipment is wet or seriously affected with damp, it will cause short circuit or even fire, cause failure or even fire, and cause loss;
(2) The LED display screen may be attacked by strong electricity and strong magnetism caused by lightning;
(3) The ambient temperature varies greatly. If the environment temperature is too high and the heat dissipation is bad, the integrated circuit may not work normally, or even be burned, so that the display system can not work normally;
(4) Wide audience, long sight distance and wide field of vision are required; The ambient light varies greatly, especially when it is exposed to direct sunlight.
According to the above special requirements, outdoor LED display must:
(1) The screen and the joint between the screen and the building must be strictly waterproof and leak proof; The screen body should have good drainage measures, once the ponding occurs, it can be discharged smoothly;
(2) Lightning protection devices are installed on LED display and buildings. The main body and shell of the display screen shall be well grounded, and the grounding resistance shall be less than 3 ohm, so that the large current caused by lightning can be discharged in time;
(3) Install ventilation equipment to reduce the temperature, so that the internal temperature of the screen is between – 10 ℃ and 40 ℃. An axial flow fan is installed above the back of the screen to discharge heat;
(4) The display medium is a new wide view tube, with wide view angle, pure color, consistent coordination, and service life of more than 100000 hours. The most popular external packaging of display media is the square cylinder with shielding edge, which is sealed with silica gel and free of metallization; Its appearance is exquisite and beautiful, solid and durable, with the characteristics of direct sunlight, dust, water, high temperature and short circuit.