US Patent 11568770 Illuminated signage

An illuminated signage has a housing that carries a plurality of signage panels having a photoluminescent area carrying indicia for the signage. The signage panels are carried in a channel extending across a front face of the housing. An electrical circuit controls a plurality of light emitters that are configured to illuminate when the photoluminescent area has been depleted and is no longer producing enough luminescence to illuminate the indicia. The electrical circuit may also be configured to illuminate the LEDs on demand.