LED ( Light Emiting Diode) is a emiting diode that release the light with many types of colors, such as red, green, blue, white & other colors.The main using colors are red & green.
The outdoor signboard adds the blue color in addition to red & green to express in full colors.The sizes of LED lamp are for 30, 50, 80 and 100. The main type is 50.
The LED has semi-perpetual life cycle with approximately 100.000 hours & little power consumption that they will greatly contribute to the future advertisement industry and are applied inmany fields such as automobile lamp, break lamp, traffic signal, light display and others.