| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an illumination light source device capable of ensuring illumination of high reliability. SOLUTION: The current, brightness, color temperature, lighting time or the like of a lamp 201 is monitored at all times by a lighting monitoring unit 203 it is decided that life time is over or abnormality for the lamp, the lamp 201 to be replaced is replaced with a spare lamp 205 inside a lamp buffer 206 by a lamp replacement part 204.</p> |
