| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bulb-compatible type LED lamp wherein the periphery of a light guide lens can be brightly shone. <P>SOLUTION: In the bulb-compatible type LED lamp 100 wherein a convex incident surface 8a1 for making light irradiated from an LED light source 1 incident at a small angle with an optical axis 1' of the LED light source 1, an approximately conical-surface-shaped incident surface 8a2 for making the light irradiated from the LED light source 1 incident at a large angle with the optical axis 1' of the LED light source 1, and a reflecting surface 8a3 for totally reflecting and converting the light from the incident surface 8a2 into the light approximately parallel to the optical axis 1' of the LED light source 1 are formed at a central section 8a of a light guide lens 8, an approximately dot-shaped lens cut 8a4a for making part of the light from the incident surface 8a1 and the reflecting surface 8a3 irregularly reflected and turning it into light returned to a board 2 side while getting away from the optical axis 1' of the LED light source 1 is formed at an emitting surface 8a4 of the central section 8a of the light guide lens 8, and a reflector 7 for reflecting the light returned from the emitting surface 8a4 is arranged between a circumference section 8b of the light guide lens 8 and the board 2. <P>COPYRIGHT: (C)2012,JPO&INPIT |
