FLUORESCENT LAMP LIGHTING DEVICE AND LIGHTING FIXTURE

摘要

PROBLEM TO BE SOLVED: To provide a fluorescent lamp lighting device equipped with an initial luminance correction control function capable of easily changing an initial illuminance value at any desired time, and a lighting fixture equipped with the same.

SOLUTION: The fluorescent lamp lighting device FOC is provided with a high-frequency lighting circuit HFO lighting a fluorescent lamp at high frequency; a dimming control circuit DCC controlling the above circuit to dim and light the the fluorescent lamp; an initial illuminance correction control circuit ICC controlling the above circuit to restrain the initial illuminance by the fluorescent lamp and maintaining the illuminance by the fluorescent lamp nearly constant by changing degrees of control of the dimming control circuit in accordance with an elapse of accumulated lighting time clocked; a resetting means RS resetting clocking of the accumulated lighting time of the above circuit; and an initial illuminance value varying means IVO setting the initial illuminance value of the initial illuminance correction control circuit at a desired value by operating from outside.

COPYRIGHT: (C)2006,JPO&NCIPI