At present, most advertising light boxes use LED light bars as the main light source, and the old-fashioned light tubes have been gradually eliminated, because the old-fashioned light tubes emit uneven light and are prone to ribs, which greatly reduces the advertising effect of light boxes. At present, the light source of advertising light box mostly adopts LED light bar or LED light bead, which is both prominent and energy-saving. According to the different light boxes, LED light bars are generally divided into LED backlight and LED side light source. And a good LED lamp must be inseparable from good chips, heat dissipation substrates and electronic components, because they will affect the light attenuation and life of LED lamps.

Single-sided light boxes generally use backlight, and the light bars or single light beads are fixed on the bottom plate of the light box at a certain distance, which is not affected by the size of the light box. It is also necessary to consider whether the light box is installed indoors or outdoors to choose whether the light bar is waterproof.

Extended data:

Double-sided light boxes generally use side light sources, and light bars or beads can be installed at a certain distance on the four sides of the aluminum frame of the light box, so that the light can be evenly received on both sides of the light box. However, due to the influence of light box area, it is generally not recommended to use side light source for light boxes with too large area, for fear that uneven illumination will affect the publicity effect.

Therefore, if the light box is used for a long time, it is suggested to buy a light source with quality assurance when selecting the light, because the light source is also a part of the light box, which will affect the effect of the light box advertisement at any time.