Abstract: The electric incandescent lamp of the H1 type according to the invention is provided with a bulb having a seal which is inserted into a metallic lamp holder. Welding tongues on the holder at the ends remote from the bulb extend away from the bulb in line with a respective holder side. The lamp comprises a metallic base plate provided with a muff or tubular portion, into which a conducting contact is inserted, which is coated with an insulating material. The tongues are welded to the muff. The base tubular portion permits sintering of a ceramic powder around the conducting contact to form a rigid insulating body.

Abstract: According to the invention, an electric incandescent lamp provided with a longitudinally arranged filament (6) and an elongate concave screen (11) cooperating with the filament has in this screen (11) a reflecting tongue (16), which gradually moves away from a flat base portion (13) of this screen (11) and faces the filament (6) throughout its length and extends towards the end (7) of the filament (6) remote from the seal (2) of the lamp vessel (1). The lamp, when used in a headlight having a flattened paraboloidal reflector, produces a dipped beam of higher luminous intensity.

Abstract: The invention relates to an electric incandescent halogen lamp for a motor-car, in which the substantially flat pinch allows the passage of internal current input conductors, between which two filaments are stretched. One current input conductor supports a cap constituting a screen of for a filament for giving a dipped beam and is prolonged into a curved end portion which is situated in a longitudinal plane perpendicular to the plane of the pinch and rests against the tubular wall of the bulb.