| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a compact luminaire capable of suppressing occurrence of luminance unevenness, and changing color of illumination light. <P>SOLUTION: Since a planar spiral fluorescent lamp 30 emitting similar illumination light is arranged in an inner space 44 of an annular fluorescent lamp 20, a dark part generated inside the annular fluorescent lamp 20 can be brightly illuminated by the planar spiral fluorescent lamp 30 when the annular fluorescent lamp 20 and the planar spiral fluorescent lamp 30 are lit by lighting devices 41 and 42, and occurrence of luminance unevenness of illumination light transmitting through a transmissive cover 43 can be suppressed. Since the planar spiral fluorescent lamp 30 is arranged in the inner space 44 of the annular fluorescent lamp 20, increase of the size of this luminaire 10 can be avoided. In addition, the color of the illumination light of the annular fluorescent lamp 20 is different from that of the planar spiral fluorescent lamp 30, so that the color of the illumination light can be changed by individually lighting both the fluorescent lamps 20 and 30 by switching a switch 12. <P>COPYRIGHT: (C)2009,JPO&INPIT |
