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US 2010/0060160 A1Published application
Halogen bulb
AssigneeOSRAM GmbH
InventorsFrank Auer, Gerhard Behr, Peter Helbig, Christian Seichter, Klaus Wittmann, Sascha Zelt
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AssigneeOSRAM GmbH
InventorsFrank Auer, Gerhard Behr, Peter Helbig, Christian Seichter, Klaus Wittmann, Sascha Zelt
Estimating the term…
The invention relates to a halogen bulb comprising two filaments that are located (21, 22) in a lamp body (10), a first filament (21) being designed for operation at a higher electrical output than the second filament (22). To fulfil a daylight driving function, the second filament (22) 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 (21) 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.
A halogen incandescent lamp with two incandescent filaments (21, 22) arranged within a lamp vessel (10), a first incandescent filament (21) being designed for operation at a higher electrical power than the second incandescent filament (22), characterized in that the second incandescent filament (22), in order to implement a daytime running light function, during operation at a standard operating voltage, is designed for an electrical power which is lower than the electrical power of the first incandescent filament (21) by a factor of 2.5 to 4, and the second incandescent filament (22) is constructed in such a way that it can be operated in a dimmed state at an operating voltage lower than the standard operating voltage in order to implement a navigation light function.
Dependencies are inferred from the claim text.