Vehicular marker lamp

摘要

An automobile headlamp includes a plurality of projection light source units disposed in a lamp chamber. Each of the plurality of projection light source units includes a projection lens; a cut-off line forming shade extending approximately horizontally and forward such that an extending tip section thereof is located in a vicinity of a rearward focal point of the projection lens; a light-emitting element as a light source provided on both upper and lower sides of the shade; and a reflector, which reflects light emitted from the light-emitting element to be guided to the projection lens, provided on both upper and lower sides of the shade. A low-beam distribution pattern having a predetermined cut-off line is formed by a light source unit section on an upper side formed of the projection lens, the shade, the light-emitting element on the upper side, and the reflector on the upper side. An additional high-beam distribution pattern having a lower end cut-off line which approximately coincides with the predetermined cut-off line is formed by the light source unit section on a lower side formed of the projection lens, the shade, the light-emitting element on the lower side, and the reflector on the lower side. At least one of the plurality of projection light source units has an optical axis set to be parallel to an optical axis of the headlamp and at least one of the plurality of projection light source units has an optical axis set to be slightly tilted forward and downward with respect to the optical axis of the headlamp.

主权项

1. An automobile headlamp comprising:
a plurality of projection light source units disposed on a single bracket in a lamp chamber, wherein the plurality of projection light source units comprises a first projection light source unit and a second projection light source unit, wherein each of the plurality of projection light source units comprises:
a projection lens,a cut-off line forming shade,a first light-emitting element disposed above the shade and a second light-emitting element disposed below the shade as a light source, anda first reflector disposed above the shade which reflects light emitted from the first light-emitting element to be guided to the projection lens, and a second reflector disposed below the shade which reflects light emitted from the second light-emitting element to be guided to the projection lens, wherein light distribution patterns formed by the plurality of projection light source units respectively are synthesized to form a light distribution pattern of the headlamp, wherein, in each of the projection light source units, the shade extends approximately horizontally and forward such that an extending tip section thereof is located in a vicinity of a rearward focal point of the projection lens, wherein a low-beam distribution pattern having a predetermined cut-off line is formed by a light source unit section on an upper side comprising the projection lens, the shade, the first light-emitting element, and the first reflector, wherein an additional high-beam distribution pattern having a lower end cut-off line which approximately coincides with the predetermined cut-off line is formed by a light source unit section on a lower side comprising the projection lens, the shade, the second light-emitting element, and the second reflector, wherein each of the first projection light source unit and the second projection light source unit forms a dark zone between the predetermined cut-off line and the lower end cut-off line, and wherein an optical axis of the first projection light source unit is set to be parallel to an optical axis of the headlamp, and an optical axis of the second projection light source unit is slightly tilted forward and downward with respect to the optical axis of the headlamp, such that the low-beam distribution pattern of the first projection light source unit illuminates the dark zone formed by the second projection light source unit, and the additional high-beam distribution pattern of the second projection light source unit illuminates the dark zone formed by the first projection light source unit.