| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting device of a structure in which light distribution controlled by a general use LED and a lens is reflected by an optical reflecting part and emitted to the outside, and which has a superior light distribution by complementing the optically heterogeneous portion of the lens by the optical reflecting part. <P>SOLUTION: A level-difference extension portion 20, which is the level difference lower face 19 is provided at a position of equal angles on an identical circle with an engaging projection insertion hole 21 centered on an optical axis of an LED 2; and as a result, a similar optical condition as a dark spot generated in the engaging projection part 17 is provided at point symmetric positions with the optical axis X of the LED 2 as an object axis. As a result, the illumination light emitted from the lighting device forms a light distribution of substantially point symmetry without polarization, and a lighting lamp with proper appearance and aesthetics is obtained. <P>COPYRIGHT: (C)2008,JPO&INPIT |
