JP2009245637A5

JP2009245637A5 -

Info

Publication number: JP2009245637A5
Application number: JP2008087929A
Authority: JP
Filing date: 2008-03-28
Publication date: 2011-04-28
Anticipated expiration: 2028-03-28

Claims

In a reflective headlamp unit for a vehicle that is mounted on a vehicle and forms a light distribution pattern for a headlamp,
A semiconductor light source arranged with the light emitting surface facing the lamp front or below,
Including a first reflecting surface, a second reflecting surface, a third reflecting surface and a fourth reflecting surface;
The first reflecting surface is disposed in front of the light emitting surface of the semiconductor light source, and is mainly either left or right in the front view of the lamp with respect to the semiconductor light source of light emitted from the semiconductor light source toward the front of the light emitting surface. A reflecting surface that diffuses and reflects light toward one side in a horizontal direction toward the second reflecting surface;
The second reflection surface is disposed on the one side with respect to the semiconductor light source, diffuses and reflects the reflected light from the first reflection surface in the horizontal direction, and is a part of the headlamp light distribution pattern. A reflecting surface forming a first light distribution pattern including a spot portion;
The third reflecting surface is disposed on the other side opposite to the one side with respect to the semiconductor light source and on the front side of the front of the lamp, and among the light emitted from the semiconductor light source toward the front of the light emitting surface Reflecting light mainly toward the other side of the semiconductor light source opposite to the one side and toward the front side of the lamp, and above a horizontal line that is part of the headlamp light distribution pattern. A reflecting surface that forms a second light distribution pattern including an elbow portion protruding into
The fourth reflecting surface is disposed on the other side opposite to the one side with respect to the semiconductor light source and on the back side of the lamp in front view, and among the light emitted from the semiconductor light source toward the front of the light emitting surface The third light distribution that reflects light mainly toward the semiconductor light source on the other side opposite to the one side and toward the rear side when viewed from the front of the lamp and is part of the headlamp light distribution pattern A reflective headlamp unit for a vehicle using a semiconductor light source, characterized in that the reflective surface forms a pattern.