Osram Ag

Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh

Patent-treuhand-gesellschaft Fuer Elektrische Gluehlampen Mbh

Osram Gesellschaft MIT Beschrankter Haftung

Osram Gmbh

Klaus Wittmann

Gerhard Behr

Christian Seichter

Peter Helbig

Oliver Hering

Sascha Zelt

Frank Auer

Manfred Bühler

Harald Kaps

Manfred B&uuml;hler

Disclosed are a welding aid for a spiral-wound filament of a lamp and a lamp comprising such a welding aid. The spiral-wound filament has a spiral-wound filament body and at least one spiral-wound filament tail. The welding aid is arranged at a distance d from the spiral-wound filament body and is designed to connect the at least one spiral-wound filament tail to a current-conducting support, the distance d being defined in accordance with a power P at which the lamp is operated.

Welding aid for a spiral-wound filament

Disclosed is a lamp, particularly for a vehicle headlight, comprising two spiral-wound filaments which are retained by three feeders within a bulb that is inserted into a base. The feeders are arranged on top of one another when the lamp is adequately oriented. A tail of the first spiral-wound filament is connected to a dimming cap, said tail being located at a distance from the base, while a tail of the second spiral-wound filament is connected to the central feeder, said tail being close to the base. The second filament tail that faces away and is located at a distance from the base is connected to the upper feeder. According to the invention, the lower feeder is connected to the dimming cap by means of an end, some sections of which are angled away from a longitudinal axis of the lamp.

Two-filament lamp

The invention relates to a dipping cap comprising a filament for a dual-filament lamp. The dimension between an outlet of an outgoing section of the filament, on the side of the base, and the point on the outgoing section of the filament, arranged opposite the outgoing section of the filament on the side of the base and welded to the dipping cap, measures more than approximately 5.2 mm and less than 9.7 mm, and the dimension between the outlet of the outgoing section of the filament, on the side of the base, and the front surface of the dipping cap, which is adjacent to the outgoing section of the filament, welded to the dipping cap, measures more than approximately 5.9 mm and less than 11.9 mm.

Anti-dazzle device with a filament

Disclosed is a lamp, particularly a halogen incandescent lamp, comprising a bulb that is provided with a pinch seal which is inserted into a base by means of an attachment ring. The attachment ring has a receiving section within which the pinch seal is clampingly fastened by means of attachment ring brackets that are supported on support surfaces. According to the invention, the support surfaces are placed at an angle from the longitudinal axis of the lamp.

Lamp featuring an improved pinch geometry

The invention relates to a halogen bulb comprising two filaments that are located () in a lamp body (), a first filament () being designed for operation at a higher electrical output than the second filament (). To fulfil a daylight driving function, the second filament () is designed to produce an electrical output that is lower by a factor of 2.5 to 4 than the electrical output of the first filament () when operating with a standard operating voltage and is designed in such a way that it can be operated with an operating voltage that is lower than the standard operating voltage in order to produce a dimmed position light function.

Halogen incandescent lamp incorporating two filaments for daylight operation

The invention relates to a halogen incandescent lamp for motor vehicle headlamps with two incandescent filaments (), which are arranged within a lamp vessel (), wherein a first incandescent filament () is designed for operation with a higher electrical power than the second incandescent filament (), wherein the incandescent filaments () are constructed in such a way that their dimensions and/or their geometry are in each case matched to an operating voltage of at least 20 volts, and at least the second incandescent filament () is an incandescent filament in the form of a single coil. Preferably, both incandescent filaments () are in the form of incandescent filaments with a single coil, wherein the first incandescent filament () is used, for example, for producing the upper beam or lower beam and the second incandescent filament () is used for producing the daytime driving light or foglight.

Halogen incandescent lamp

The invention relates to an incandescent halogen lamp, comprising at least one tungsten incandescent filament () in a transparent light bulb () and a filling in the light bulb (), which has a halogen component for a halogen recycling process and a noble gas component containing krypton or xenon, whereby the noble gas component comprises at least one further noble gas, the atoms of which have a smaller atomic radius than krypton atoms and the cold filling pressure within the light bulb () is greater than or equal to 0.7 Megapascal. Said incandescent halogen lamp is suitable as light source in a curved lamp or as combined day running or position light in a motor vehicle.

Incandescent halogen lamp

The invention relates to an electric incandescent lamp, in particular a vehicle headlight, having at least one incandescent filament which is arranged within a light-permeable lamp vessel, the at least one incandescent filament having different pitch factors at its two ends. In order to increase the luminance at the light/dark boundary of the lower beam, that end of the incandescent filament which is near to the base has a lower pitch factor.

Electric incandescent lamp provided with different pitch factors for each end of a filament component

The invention relates to an incandescent lamp for motor vehicle headlights, having at least one incandescent filament () arranged inside the lamp vessel, and a shading device (). A coil exit () of the incandescent filament () is joined to an edge section () of the shading device () running substantially parallel to the coil axis, in order to ensure an improved suspension of the incandescent filament ().

Incandescent lamp for motor vehicle headlights

The invention relates to an incandescent lamp for a motor vehicle headlight. The secondary filament ( ) is arranged in such a way that, in a projection plane that is arranged perpendicular to the reference plane (B), the edge ( ), facing the antidazzle device ( ), of the image, projected onto the projection plane, of the second incandescent filament ( ) is arranged over the entire length of the second incandescent filament ( ) between the reference axis (A) and the antidazzle device ( ), and the edge ( ), facing the antidazzle device ( ), of the image, projected to the scale 1:1 onto the projection plane, of the second incandescent filament ( ) has a prescribed spacing from the reference axis (A). It is thereby possible to produce the light/dark boundary for the lower beam with the aid of the edge ( ) of the secondary filament image ( ).

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Sontheim, Germany

Klaus Wittmann