RETROREFLECTING SHEET WHICH EMITS LIGHT WHEN IRRADIATED WITH ULTRAVIOLET RAY

摘要

The present invention provides an ultraviolet luminescent retroreflective sheeting comprising a retroreflective region in which retroreflective elements are disposed, and an ultraviolet luminescent region which emits light under ultraviolet radiation, which is characterized in that said ultraviolet luminescent region contains a fluorescent agent which emits light under ultraviolet radiation and a resin component, and said ultraviolet luminescent region has a specific luminance; and also a display device comprising said ultraviolet luminescent retroreflective sheeting in combination with an ultraviolet radiation means for radiating ultraviolet rays in the direction of said retroreflective sheeting. The ultraviolet luminescent retroreflective sheeting exhibits excellent visibility at night, to not only those persons who are in the direction of the light source but also to those who are located in the directions different from that of the light source.