| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting device capable of reducing the parts number and device thickness by simplification of a power-supplying structure, a cooling structure and an enclosed waterproof structure. <P>SOLUTION: The lighting device 1 comprises a hemispherical lens 5 rotatably held in a housing 3 and an LED (light source) 10 irradiating light L toward the lens 5 fixed to the housing 3. Here, a hemispherical surface of the lens 5 is to be a light-incident surface 5a, and a surface other than the hemispherical surface is to be an emission surface 5b, of light. At least a central part of the light emission surface 5b is to be a convex curved surface of 5b-1 in a direction of light emission. Further, the lens 5 is rotatably held in the housing 3 through guide rings 6, 7, and a waterproof rubber 8 is mounted on the guide ring 7 at a contact part with the lens 5. <P>COPYRIGHT: (C)2012,JPO&INPIT |
