| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a high-efficiency natural lighting device which collects light such as sunlight by a lens, transmits the collected light to a necessary place through a light guide member such as an optical fiber, uses the light at the transmitted place as, for example, illumination light. <P>SOLUTION: The natural lighting device includes: the lens 10 as a light collecting member; the optical fiber 13 as the light guide member with a first end part 14 arranged on a focal position of the lens 10 and guiding the light collected by the lens 10 to a second end part 15 arranged in a desired position; a solar battery 20 as a first photoelectric conversion part arranged in a periphery of the first end part 14 and converting the light, which does not enter the optical fiber 13 but leaks, into electrical energy; an LED device 30 as a second photoelectric conversion part, arranged at a desired position and converting the electrical energy into light energy; and a lead 40 as the conductive member which guides an output of the first photoelectric conversion part to the second photoelectric conversion part. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
