| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an emergency lighting apparatus capable of being lighted for an extended length of time while maintaining prescribed optical output.SOLUTION: A lighting control unit of the emergency lighting apparatus exerts control in such a way that, for a prescribed time T from when a light source starts lighting in an emergency, the light source is lighted with a first optical output P1, regardless of whether human presence is detected by a human detection sensor unit; when human presence is detected by the human detection sensor unit after an elapse of the prescribed time T, the light source is lighted on the basis of the detection signal with a second optical output P2 which is lower in optical output than the first optical output P1; when human presence is not detected by the human detection sensor unit after an elapse of the prescribed time T, the light source is lighted on the basis of the detection signal with a third optical output P3 which is lower in optical output than the second optical output P2.</p> |
