Abstract: There is provided a display structure body for escape guide utilizing a light accumulation material which can also be utilized in a normal time in a bright place. The display structure body includes a light transmitting first pattern layer unit having a pattern made by a light accumulation material and a light transmitting second pattern layer unit for normal display, on the surface of a light emitting unit. In a normal time, it has a normal display function such as an advertisement. When power supply is stopped, it is automatically switched to a display of escape guide or the like.

Abstract: An object of the present invention is to provide a light-storing fluorescent spherical powder that exhibits a high emission intensity, emits light for a prolonged time, and has an excellent workability even when it is added to synthetic resin or the like. There is provided a light-storing fluorescent spherical powder that contains an alkaline earth metal aluminate as a main component and a transition metal element such as lanthanoid as an activator, in which the powder comprises a spherical powder.