| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lamplight device with a wide irradiation angle regarding one most suitable as a signal light for showing a taking-off and landing location at night by installing at a taking-off and landing site of a flying object such as a helicopter. <P>SOLUTION: The lamplight device has a light-emitting section 3 having a plurality of light-emitting bodies 35 respectively having optical axes in vertically upward directions and arranged in parallel so as to form a circle centering a vertical center axis X on a substrate 31 and a reflector 33 made of the plurality of light-emitting bodies 35 and arranged in the circle. The reflector 33 is arranged to be coaxial with the vertical center axis X, and has a shape of an inverse frustum with a reflecting periphery 331 which reduce its diameter downward by reversing the top and bottom. Each light emitter 35 is arranged at a location crossing a perpendicular line which perpendicularly takes down from an outer peripheral edge of an upper end of the reflector 33. <P>COPYRIGHT: (C)2010,JPO&INPIT |
