Problems that should be paid attention to in the application of outdoor LED display
Nowadays, the application of LED display is more and more extensive, and outdoor front service LED display can be seen everywhere on the street and in shopping malls. Due to the many advantages of LED displays, many advertisers have used outdoor LED displays to do visual marketing in recent years, and the outdoor LED display application market has flourished, and the market prospect is bright.
In the process of using the outdoor LED display, it is greatly affected by the surrounding environment. In order to make the LED display have a better display effect outdoors, we should pay attention to the following issues:
1. The brightness of the outdoor LED full-color display generally needs to be above 1500cd/m2 to ensure the normal operation of the display, otherwise the displayed image will be unclear due to the low brightness. Affected by the outdoor environment, if the high temperature for a long time will cause the LED to decay, which will affect the display effect of the display screen, and also affect the life of the screen body. To solve this problem, the circuit board design of the LED display must meet the requirements of heat dissipation performance. Using aluminum heat dissipation fins as the shell is the lowest cost way to enhance heat dissipation—using the shape of the lamp shell to create convection air.
2. the brightness of the LED display is mainly determined by the quality of the LED lamp beads. Poor or uneven heat dissipation may cause uneven heat dissipation throughout the LED light. The white balance effect is one of the most important indicators of the LED display, which ensures that the color displayed on the LED display is highly consistent with the color of the playback source. Capacitors are set by switching devices or other components that need filtering/decoupling. These capacitors should be arranged as close to these components as possible, and it will not work if they are too far away.
3. The size of the viewing angle directly determines the number of LED display audiences, so the bigger the better. The uneven attenuation speed of the red, green and blue LED lights is more likely to cause a color cast on the screen. The size of the viewing angle is mainly determined by the packaging method of the die. Color reducibility refers to the reducibility of LED display to color lighting design.