| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting device with high efficiency of irradiation and excellent appearance. <P>SOLUTION: The device is structured of a translucent plane light-emitting module, and a changeover plate arranged at a rear face of the plane light-emitting module. The changeover plate is structured to be capable of changeover between a shielding state and a translucent state, so that light can be guided to one direction by setting the changeover plate at the shielding state, for instance, at emission of the plane light-emitting module, and degradation of irradiation efficiency is prevented. <P>COPYRIGHT: (C)2010,JPO&INPIT |
