| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting fixture having a performance of ≥luminance 500 cd/m<SP POS="POST">2</SP>when energized and luminance ≥1,000 mcd/m2 (1cd/m<SP POS="POST">2</SP>) after passing 5 hours after stopping energization. <P>SOLUTION: The lighting fixture has a transparent case 4 and a base plate 2, and a phosphor 3 having phosphorescent function is formed on the inner side face opposed to the base plate of the transparent case. A plurality of ultraviolet LED lamps 1 are installed on the base plate, a reflecting sheet 5 is installed between the phosphor and the ultraviolet LED lamps, and further, a plurality of holes 6 through which the ultraviolet rays emitted from the ultraviolet LED lamps can pass are installed on the reflecting sheet surface, and a space section for emitting a portion of visible light emitted from the backside of the phosphor to the outside is provided between the phosphor and the reflecting sheet. <P>COPYRIGHT: (C)2013,JPO&INPIT |
