US Patent 7971378 Electronic advertising panel for playing fields

The invention relates to an electronic advertising panel for playing fields. The inventive panel is formed by modules consisting of a functional sandwich-type assembly comprising a metal plate (3), at least one polycarbonate sheet (4) and at least one PCB plate (5) which is equipped with LEDs (5.1). The components of the aforementioned assembly are joined using bolts (6) which are inserted into the metal plate (3) and which extend through the polycarbonate sheet(s) (4) and the PCB plate(s) (5). Said functional assembly is housed in a casing which is equipped with coupling means for joining modules and with support feet which can be rotated between a folded position and a use position.