LIGHTING DEVICE FOR LUMINOUS OBJECT

摘要

PROBLEM TO BE SOLVED: To provide a lighting device for a luminous object which causes the light to emit light using a quantity of electricity generated from a piezoelectric element, so that the device can extend lighting time. SOLUTION: A light such as a light-emitting diode is caused to emit light using the quantity of electricity generated from the piezoelectric element. A light-accumulated phosphor is excited with the emitted light and thereby caused to emit light to keep the light on for a long time.