Vehicle light capable of changing light distribution pattern between low-beam mode and high-beam mode by a movable shade and a reflecting surface

摘要

A vehicle light (1) comprising a single light source (2a) capable of switching its light distribution pattern between a low-beam mode and a high-beam mode by a movable portion (7, 17), a first reflecting surface (3) whose longitudinal direction is along an optical axis X of the vehicle light (1), and having a first focus (f1) in the vicinity of the light source (2a), for reflecting light rays from the light source (2a) to the forward, a projection lens (9), and a shutter (6) for providing a predetermined shape to the light rays from the first reflecting surface (3) on formation of the low-beam mode light distribution pattern by being selectively inserted in the luminous flux from the first reflecting surface (3) to the projection lens (9): further comprising a second reflecting surface (4) of an ellipse group reflecting surface having its first focus (f1) approximately on the light source (2a) and its second focus (f4) at a predetermined position; at least one third reflecting surface (5, 5a, 5b) having a first focus (f5) in a predetermined position and at least one second focus (f5a, f5b) in at least one predetermined position; a fourth reflecting surface (8) having a focus (f8) approximately on the second focus (f4) of the second reflecting surface (4) for reflecting light rays to a predetermined forward direction; wherein when the third reflecting surface (5, 5a, 5b) is located in its inserted position relative to the luminous flux from the second reflecting surface (4) to the fourth reflecting surface (8), the first focus (f5) of the at least one third reflecting surface (5a, 5b) is substantially on the second focus (f4) of the second reflecting surface (4); and wherein the movable portion (7) comprises the shutter (6) and the at least one third reflecting surface (5, 5a, 5b). IMAGE