Abstract: The invention relates to a modular illuminated sign 1 (or illuminated panel or illuminated wall) that may be assembled in modules, wherein each module 2 comprises a front part 3 and a corresponding rear part 9, braces 10, 60, 130, 140 which keep the front part and the rear part separate at a predetermined distance and, in cases where the module comprises an edge 90 forming the periphery of the sign, a corresponding frame part 60, 65, 130, 140.