| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an LED lighting device capable of reducing a ratio of a portion which is not visible due to shining as seen from an irradiating direction without increasing thickness dimensions of a whole LED lighting device. <P>SOLUTION: In the LED lighting device 100 wherein LED light sources 1a, 1b, and 1c are arranged so as to make optical axes 1a', 1b', and 1c' in parallel and light guide lenses 2a, 2b, and 2c for guiding light from the LED light sources 1a, 1b, and 1c are arranged, the light guide lenses 2a, 2b, and 2c are formed in the same shape, and a lower layer part 2a-1 of the light guide lens 2a is covered with an upper layer part 2b-2 of the light guide lens 2b and an upper layer part 2c-4 of the light guide lens 2c. A reflecting surface 2a4 of the light guide lens 2a and an end face 2b14 of the light guide lens 2b are made into a complementary shape, a reflecting surface 2a8 of the light guide lens 2a and an end face 2b20 of the light guide lens 2b are made into a complementary shape, the reflecting surface 2a4 of the light guide lens 2a and an end face 2c17 of the light guide lens 2c are made into a complementary shape, and the reflecting surface 2a8 of the light guide lens 2a and an end face 2c23 of the light guide lens 2c are made into a complementary shape. <P>COPYRIGHT: (C)2012,JPO&INPIT |
