Patent ID: 6821004
Filing Date: 2004-11-23
Classification: B60Q,F21S

Abstract:
A headlamp for a vehicle carrying out beam irradiation in a low beam distribution pattern having a predetermined cutoff line on an upper edge by a lighting unit comprising a light source and a reflector for forward reflecting light emitted from the light source,a movable shade such as to take a shielding position in which a part of light incident on the reflector from the light source is shielded, and a shielding release position in which the shielding is released, and a shade driving device for moving the movable shade between the shielding position and the shielding release position, wherein: said beam irradiation is carried out in the low beam distribution pattern when the movable shade is set in the shielding position, and wherein an auxiliary light distribution pattern, which is formed by light reflected by the reflector and which has a cutoff line above a cutoff line of the low beam distribution pattern, is added to the low beam distribution pattern to carry out the beam irradiation when the movable shade is set in the shielding release position, the cutoff line of the low beam distribution pattern includes a horizontal cutoff line on an opposite lane side and an oblique cutoff line rising obliquely from the horizontal cutoff line toward a self-lane side, and a cutoff line of the auxiliary light distribution pattern is extended substantially in parallel with the oblique cutoff line of the low beam distribution pattern on the opposite lane side therefrom.