| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lighting device and an illumination fixture free from limitation in the kind of a light source, capable of informing the state of light source to provide a convenience for a judgement of the time of exchanging a light source to a user. <P>SOLUTION: The illumination device comprises an LED 4 informing the lighting efficiency of circular fluorescent lamps 1a, 1b at all times, an accumulated lighting time detecting means 31, a judging means 32, and an information control means 33. Accordingly, as the state of the lighting efficiency of the circular fluorescent lamps 1a, 1b can be obtained from the information of the LED 4 at all times, it is possible to call upon to exchange the circular fluorescent lamps 1a, 1b at a proper time. <P>COPYRIGHT: (C)2004,JPO</p> |
