| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an illumination device capable of obtaining illumination corresponding to a season. <P>SOLUTION: Since the device changes the color of illumination by adjusting output of a plurality of light sources 15R, 15G, 15B having different colors according to a season such as the summer when the length of daytime is longer than a certain time and the winter when the length of night is longer than a certain time, illumination with a sense of season can be obtained. <P>COPYRIGHT: (C)2010,JPO&INPIT |
