| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive light-emitting device for an optical duct that is connected with an optical duct so as to automatically adjust a light amount. SOLUTION: The light-emitting device for an optical duct is composed so as to emit light into a bathroom unit 1 through the optical duct 102 that introduces light from outdoors. A light-shielding body composed of slit disks 16, 17 is provided inside a light outlet 6. The slit disks 16, 17 are respectively formed with slits. A stepping motor 14 for rotating the slit disk 17 is provided. A light-shielding rate of the light-shielding body is changed by rotating the slit disk 17 with respect to the slit disk 16 by the stepping motor 14. COPYRIGHT: (C)2008,JPO&INPIT
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