大象世界
Technology
What is an LED Sign?
An LED (light emitting diode) is an efficient, effective and ultrabright alternative to incandescent light bulbs. Unlike traditional light bulbs, LEDs do not burn out because there is no filament. Instead they slowly dim over a long period of time (about 100,000 hours or 11+ years).
An LED sign is made up of individual panels — also called “modules” — that are about 12" square. The modular design allows the signs to be configured to almost any size. LED signs are typically double-sided and are available in mono- chrome or full color.
LED signs are usually one component in a larger sign structure, as in the examples shown here. Messages can be programmed and scheduled easily using software installed on the computer that controls the sign.
Each module of an LED sign contains LEDs arranged in “pixels”. A high-quality color sign will typically have three LEDs per pixel: one red, one green and one blue. The distance between pixels determines the resolution of the sign. The closer pixels are together, the higher the resolution, or image quality, of the LED sign.
