COLOR TEMPERATURE CONTROL LIGHTING SYSTEM, AND SLEEPING DEVICE, AWAKING DEVICE, AND SLEEPING/AWAKING DEVICE USING IT

摘要

PROBLEM TO BE SOLVED: To allow relax or smooth sleeping by alternately generating low color temperature and intermediate color temperature, and by setting the generating time interval to be shorter than time interval where human has chromatic adaptation. SOLUTION: When a color temperature control lighting device is used as a sleeping device, low color temperature is generated for another given time, continuously intermediate color temperature is generated for a given time, these processes are alternately switched, and the switching time interval is set to be shorter than interval where human has chromatic adaptation. This time interval is preferably within five minutes. Color temperature control parts 4 determine output from red light source 1 (less than 3000 K) and pale light source 2 (more than 6700 K), respectively, and each light adjusting lighting device 5 adjusts light from low color temperature less than 3000 K to high color temperature more than 6700 K. As the switching time interval, for example, generating period of intermediate color temperature is three minutes, and generating period of low color temperature is five minutes.