| 摘要 |
PROBLEM TO BE SOLVED: To operate as an evacuation guide light only in an emergency, and operate as a floodlight at a usual time in an evacuation guide device. SOLUTION: A side face radiative body 3 which is turned on in an emergency, irradiates light into a translucent board 2 from the side face of the translucent board 2, and allows a predetermined display 21 to emit light is fitted around the translucent board 2 on the back face of which the display 21 is formed by surface roughening. A rear radiative body 4 which is turned on at a usual time and irradiates the translucent board 2 from the rear is fitted at the rear of the translucent board 2. The power from a power source device 5 is switched by a change-over switch 6 so as to supply respectively to the rear radiative body 4 at the usual time and to the side face radiative body 3 in the emergency. Thereby, at the usual time the rear face radiative body 4 is turned on so as to be visible just as a floodlight without any display 21, and in the emergency the side face radiative body 3 is turned on so as to be visible as the evacuation guide light with the display 21. |
