The outdoor LED display screen, as the new favorite of the future outdoor display advertising media, is widely used in finance, taxation, industry and commerce, post and telecommunications, sports, advertising, factories and mining enterprises, transportation, education systems, stations, docks, airports, shopping malls, hospitals, hotels, banks, securities markets, construction markets, auction houses, industrial enterprise management, and other public places. It is used for media display, information release, traffic guidance, creative display, etc.
The outdoor LED display screen has a large area of tens of square meters to hundreds of square meters or even more. It has high brightness, a large viewing angle, and can work in the sun. It has certain wind, rain, and water resistance functions. It is mainly used for outdoor advertisements, stations, squares, shopping malls, etc.
In order to meet the requirements of outdoor display, what features should outdoor LED display have?
The outdoor LED display screen is generally large, so it is still very heavy. For the LED display screen installed outdoors, the first thing to pay attention to is the structural design. The installation structure should take into account: wind resistance, earthquake resistance, bearing capacity, and other major factors; Secondly, the shape, structure, and exterior decoration design of the screen should be coordinated with the building or environment it is attached to.
Installation of lightning protection measures
In order to protect the display screen from strong electromagnetic attack caused by lightning, the display screen and the protective layer of the outer package must be grounded, and the resistance of the grounded circuit should be less than 3 Ω, so that the current caused by lightning can be drained from the ground wire in time.
Waterproof, dustproof and damp proof grade
Generally, the protection level of the outdoor display screens is above IP65.
Consider local environmental factors, such as air humidity, air salinity (coastal cities), etc. The connection between the box and the box, as well as the connection between the screen body and the stressed installation object, shall be seamless to avoid water leakage and moisture. Good drainage and ventilation measures shall be taken inside the screen, and if there is water accumulation inside, it can be timely treated.
On the Selection of Circuit Chips
For example, in northeast China, the temperature in winter can generally reach about ten degrees below zero. In this way, when selecting circuit chips, it is necessary to select industrial chips whose operating temperature is minus 40 degrees Celsius, which means 80 degrees Celsius, to avoid the situation that the display screen cannot be started due to low temperature.
Ventilation measures shall be taken inside the screen
A certain amount of heat will be generated when the screen is powered on for operation. If the heat cannot be discharged, it will cause the internal environment temperature to be too high when it accumulates to a certain extent, which will affect the operation of the circuit, and in serious cases, it can lead to burning, causing the display screen to fail to operate. Therefore, ventilation and heat dissipation measures must be taken inside the screen, and the temperature of the internal environment should be kept between minus 10 ℃ and 40 ℃
Selection of highlighted lamp beads
The selection of LED tubes with high luminous brightness can enable us to display well in the direct sunlight, and also enhance the contrast with the surrounding environment, so that the audience of the picture is wider, and there is still a good performance in the places with long distance and wide angle of view.