| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lighting control unit and a lighting system that give users no unpleasant nor incongruous feeling, even when a target value is set comparatively low. <P>SOLUTION: A storage part 11 of the lighting control unit 1 is made to store a re-lighting levelθset at a higher level than a target valueδ, and a light-off levelαset at a higher value than a value when a lower-limit level within a light control range by dimming signals (the lowest dimmable valueγ) is added to the re-lighting levelθ. The control part 12 of the lighting control unit 1 puts off a lighting fixture 2 when a brightness (a luminance) as detected by a brightness sensor 10 with the lighting fixture 2 at a dimming state at the lowest valueγexceeds the light-off levelα, and controls the lighting fixture 2 to be put on by dimming signals when a luminance gets below the re-lighting levelθwith the lighting fixture 2 at a light-off state. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
