Automotive front lighting lamp with baffle

摘要

A lamp for automotive vehicle front lighting is described. The lamp 10 comprises a base 12 for mechanical and electrical connection to an automotive headlight 50 and a burner 14 fixed to the base 12. The burner 14 comprises an enclosed transparent vessel 22. A first and a second filament 34, 36 are arranged within the vessel 22. A baffle 40 is arranged proximate to the first filament 34 to shield the second filament 36 from the first filament 34. The baffle 40 is of concave shape and includes a bottom surface 41 and side surfaces 45 terminating in side edges 48. The baffle 40 further includes a front surface 43 arranged between the first and second filaments 34, 36 to shield the second filament 36 from light emitted from the first filament 34. The side edges 48 each comprise a central portion 54 extending, in side view, straight and in parallel to the longitudinal axis X. The straight central portions 54 have an axial length of at least 3.5 mm. An edge height HE is defined as a distance between the bottom surface 41 and the plane defined between the central portions 54 of the side edges 48. The edge height is more than 2.8 mm.

主权项

1. Lamp for automotive vehicle front lighting, comprising
a base for mechanical and electrical connection to an automotive headlight, said base having a longitudinal axis, a burner fixed to said base, said burner comprising an enclosed transparent vessel, at least a first and a second filament arranged within said vessel, and a baffle arranged proximate to said first filament to partially shield light emitted from said first filament, wherein said baffle is of concave shape and includes at least a bottom surface and side surfaces, said side surfaces terminating in side edges, and wherein said baffle further includes a front surface arranged at an axial front end of said baffle, the axial front end being the axial end of said baffle closest to the second filament, where at least a part of said front surface is arranged between said first and second filaments to shield said second filament from light emitted from said first filament, wherein the front surface extends higher than the side edges of the baffle, and wherein the front surface and the side edges form a sloping transition, wherein said side edges each comprise a central portion extending, in a side view, at least straight and in parallel to said longitudinal axis, said straight central portions starting, in a side view, at a distance (a) along said longitudinal axis from said front end of no more than 2.8 mm, and wherein an edge height is defined as a distance between said bottom surface and a plane defined between said straight central portions of said side edges, where said edge height is more than 2.8 mm.