| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light source device and a lighting fixture excellent in convenience with lightness and a luminance distribution (illuminance distribution) variable. <P>SOLUTION: An electric bulb 1 is provided with a housing 2 structured with a cylindrical body having an opening part 22 with one end open, and a plurality of light-emitting devices 4 fitted inside the housing 2 each equipped with a light-emitting diode 42, and it is so structured that light from each light-emitting device 4 is irradiated outward through the opening part 22 at a lower end. Further, the electric bulb 1 is provided with a luminance distribution changing means 6 for changing a luminance distribution of light emitted from each light-emitting device 4 and irradiated outward through the lower-end opening part 22. <P>COPYRIGHT: (C)2012,JPO&INPIT |
