| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an LED lighting tool with excellent light radiation efficiency and excellent visibility as a lighting tool, without making a structure larger and more complicated. <P>SOLUTION: As a driver treads on a brake pedal, LED chips 40 are lit by electricity being passed on LEDs 4 through a wire harness and a wiring pattern of an LED-mounting board 40, and red-color light irradiated from the LED chips 40 enter into a light guide body 5 through periphery faces of LED housing parts 5B, are reflected by a deposition face 5a to be diffused inside the light guide body 5, and reach a half-deposition face 5b. The half-deposition face 5b transmits part of the light diffused and reflects part of it. The light reflected by the half-deposition face 5b diffuses inside the light guide body again to be reflected at the deposition face 5a, and diffuses inside the light guide body to reach the half-deposition face 5b. Like this, the light is irradiated outside while the reflection is repeated between the deposition face 5a and the half-deposition face 5b. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
