PURPOSE: To emit auroral light simply, easily and at a low cost, which light shakes while differing in color in layers.

CONSTITUTION: A plurality of rows of transparent pipes 2 curved in a corrugated manner horizontally, both ends of which pipes are supported by two posts 1, 1 erected at a predetermined space, are arranged in the direction of height. A plurality of transparent capsules 3 mutually connected by wire 4, the inside of which capsules is filled with a liquid fluorescent paint, are inserted into respective transparent pipes 2, and the transparent capsules 3 in the transparent pipes 2 are reciprocated by winding and rewinding of the wire 4. Then, near ultraviolet rays are applied to the plurality of rows of such transparent pipes 2 to cause the transparent capsules 3 to emit light.