| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a luminaire at tunnel entrance capable of controlling the amount of irradiation of an illumination fixture continuously while reducing power consumption. <P>SOLUTION: In a fixed interval from tunnel entrance, in the luminaire at the tunnel entrance capable of controlling the light so as to reduce the amount of irradiation of an illumination fixture gradually from the lightness corresponding to the outdoor brightness on the entrance side to the lightness of basic illumination on the back side of a tunnel, a luminance meter is provided on the outside of the tunnel, a plurality of LED illumination fixtures are provided in the tunnel entrance, the luminance meter and the LED illumination fixtures are connected via a controller, and the amount of irradiation of the LED illumination fixtures is controlled continuously by an output signal corresponding to the outdoor brightness emitted from the controller. <P>COPYRIGHT: (C)2013,JPO&INPIT |
