| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a device having high amenity to the aged by setting a light output quantity of a range required for high-degree visual working not less than a specific value, and setting a light output quantity of a range unrequired for work not more than the specific value. SOLUTION: A light output quantity y1 of a range required for high-degree visual working is set to (y1>10001x), and a light output quantity y of a range unrequired for working is set to (y2/y1<=-1.051 log (y)+4.15). A working spot irradiating luminaire 41 is composed of a working spot irradiating lighting circuit and a working spot irradiating light source, and a peripheral irradiating luminaire 42 is composed of a peripheral irradiating lighting circuit and a peripheral irradiating light source. The working spot irradiating luminance 41 and the peripheral irradiating luminance 42 are connected to a power source through the light dimmer control, and the light dimmer control is connected to the remote control signal receiving part or a changeover switch. The working spot irradiating luminance 41 and the peripheral irradiating luminaire 42 freely set an irradiating spot and the light output quantity, and a proper illuminating environment according to various work is set in various positions of a room by combining these.</p> |
