| abstract |
(57) [Summary] [PROBLEMS] To provide an illuminating device which can be easily manufactured, can emit light of various favorite colors, and can be used for a long period of time, instead of a fluorescent lamp. SOLUTION: A phosphor illuminating tube 1 has an ultraviolet LED substrate 5 having substantially the same length as the fluorescent tubular body 2 inside a fluorescent tubular body 2 in which a phosphor containing a fluorescent material is applied to the inner surface of a transparent glass tube. It has been inserted. The ultraviolet LED board 5 has 24 ultraviolet light emitting elements 3 having a long life, and lead wires 11A and 11B for supplying power are connected to the left end. When ultraviolet rays are emitted from the four ultraviolet light emitting elements 3, the phosphor emits light of a unique fluorescent color, and the entire fluorescent tubular body 2 emits light to illuminate the surroundings and can be used as illumination. The fluorescent material has various emission colors including the three primary colors of red, green and blue light, and these can emit an arbitrary emission color. |