Light-emitting signboard with optimized structure

The light-emitting signboard with the optimized structure comprises a sign shell, and light source adjusting mechanisms are arranged at the left end and the right end of the front side of the sign shell. The light source adjusting mechanism comprises a first fixing shell, a second fixing shell, programmable LED lamp beads and a display screen. A first fixing shell and a second fixing shell are connected to the left end and the right end of the front side of the sign shell through bolts correspondingly, and a plurality of programmable LED lamp beads are fixedly embedded into the front side of the first fixing shell. By means of the programmable LED lamp beads on the first fixing shell and the display screen on the second fixing shell, a road condition sign can be displayed on the sign board through the multiple programmable LED lamp beads, the sign can be displayed and changed in real time according to the road condition, the dynamic effect of the road condition can be set through the programmable LED lamp bea