The structure of the display panel is comprised of a frame (1) provided with wheels (2) rolling on rails (3) and wherein is mounted, with the possibility of regulating the inclination, a structure comprised of two side plates (4) and wherein are set two guiding rollers (18) for a laminar body (17) carrying different information, and two rollers (21) for rolling/unrolling said laminar body (17), said rollers being actuated by respective electric motors (22-22') which, appropriately controlled by a computer program, allow to change the information provided by the panel after appropriately predetermined display periods of time.