The interior light billboard is commonly known as the outdoor light box. The materials of the spray painting are different, and the built-in light tube, so that the picture of the billboard during the day and night is very clear. Good light transmittance, uniform, relatively high brightness.

It is mainly divided into monochrome and full-color display screens. The monochrome price is low. It is applicable to places that only need to display text and are constantly updated, such as hospitals, banks, passenger stations, tax authorities, docks, wholesale markets, hotels, etc. The full-color LED display is actually equivalent to a display or an advertising player. The cost investment of large full-color billboards in the early stage is quite large, which is mainly applicable to advertising, central urban areas with very large traffic, sports venues, etc.