PHOSPHORESCENT MARKERS

摘要

The invention relates to a phosphorescent marker or sign that includes a box-like hollow body (1) that houses an illuminating device (2) and is characterised in that at least that wall of the box-like body (1) which is intended to face towards a viewer includes a plastic material that is semi-transparent to visible light; in that said wall includes a phosphorescent material (4); in that the illuminating device (2) includes a flash unit (3) which is adapted to emit light which consists substantially of ultraviolet and short-wave light; and in that the flash unit (3) is adapted to flash at predetermined time intervals.