ILLUMINATING DEVICE

摘要

An illuminating device has light means for generating light and a light-emitter comprising an after-glowing material for emitting light after the light means is switched off or has extinguished. According to the invention, the light-emitter comprises a predetermined pattern for displaying information. Preferably, the intensity Ilm of the light emitted by the light means as compared to the intensity Ile of the light emitted by the light-emitter is such that Ile/Ilm < 0.1, preferably Ile/Ilm < 00.1. Preferably, the pattern comprises an alphanumerical character, a logo and/or an arrow. The light-emitter is preferably provided on an electric lamp, on the light emission window of a luminaire or on a display window of a display device. The pattern remains visible after the light means has been switched off or has extinguished.