Vibration resistant automotive front lighting lamp

Patent metadata

Field	Value
Publication number	US-9899207-B2
Application number	US-201415025388-A
Country	US
Kind code	B2
Filing date	Sep 29, 2014
Priority date	Oct 9, 2013
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

A lamp for automotive front lighting and a vehicle headlight comprising the lamp are described, as well as a method of manufacturing the lamp. The lamp 10 comprises a base 12 for mechanical and electrical connection to an automotive headlight 50 . A burner 14 is fixed to the base 12 and comprises a sealed transparent vessel 22 . A first filament 34 is arranged within the vessel 22 . A holding wire 30 c is arranged within the vessel, and a baffle 40 is arranged proximate to the first filament 34 to partially shield light emitted from the first filament 34 . The baffle 40 is fixed to the holding wire 30 c . The transparent vessel 22 comprises a vessel wall including a cylindrical portion 24 surrounding the first filament 34 . In order to obtain a lamp which may withstand vibration, a support member 38, 138, 238 is provided including at least a first part 39 fixed to the baffle 40 or to the holding wire 30 c and a second part 43 which is in contact with the cylindrical portion of the vessel 22 . The support member 38, 138, 238 comprises a flexible intermediate part 37 connecting the first and second parts, such that the baffle 40 or the holding wire 30 c is supported resiliently against the vessel 22.

First claim

The invention claimed is:

1. Lamp for automotive vehicle front lighting, comprising
a base providing mechanical and electrical connections,
a burner fixed to said base, said burner comprising a sealed transparent vessel,
at least a first filament arranged within said vessel,
at least one holding wire arranged within said vessel, and
a baffle arranged proximate to said first filament to partially shield light emitted from said first filament, said baffle being fixed to said holding wire,
where said transparent vessel comprises a cylindrical portion surrounding said first filament,
and where a support member is provided including at least a first part fixed to said baffle or to said holding wire, and a second part, said second part being in contact with said cylindrical portion of said vessel, where said support member comprises at least one flexible intermediate part connecting said first and second parts, said baffle or said holding wire being thereby supported resiliently against said vessel.

2. Lamp according to claim 1 , wherein
said support member includes a first and a second leg, where each of said legs comprises a second part in contact with said cylindrical portion of said vessel.

3. Lamp according to claim 1 , wherein
said second part is in one-sided contact with an interior wall of said vessel.

4. Lamp according to claim 1 , wherein
said flexible support member is formed in one piece with said baffle.

5. Lamp according to claim 1 , wherein
said flexible support member is made out of flat metal material.

6. Lamp according to claim 1 , wherein
said flexible support member is made out of a metal wire.

7. Lamp according to claim 1 , wherein said baffle shields said flexible support member from light emitted from said first filament.

8. Lamp according to claim 1 , further comprising
at least a second filament arranged within said vessel.

9. Lamp according to claim 1 , wherein
at least three holding wires are arranged within said vessel, and said filaments and said baffle are fixed to said holding wires,
where said holding wires extend from a pinch seal of said vessel into the interior of said vessel,
and where a holding bar is arranged distant from said pinch seal, said holding bar enclosing said holding wires.

10. Lamp according to claim 1 , wherein
said base comprises three electrical contact, and
three holding wires are arranged extending from a pinch seal of said vessel into the interior of said vessel, each of said holding wires being electrically connected to one of said electrical contacts,
where said first filament is electrically connected between a first and a third holding wire, and where a second filament is electrically connected between a second and said third holding wire.

11. Vehicle headlight, comprising
a reflector, and
a lamp according to claim 1 .

Assignees

• Koninklijke Philips Nv

Inventors

• Petter Markus
• Tiesler Wittig Helmut
• Schoenfelder Bernd
• Moeeller Johannes Gerhard

Classifications

• H01K9/08 Primary

  to provide selectively different light effects, e.g. for automobile headlamp · CPC title

• H01K1/22

  Lamp stems (seals for leading conductors there through H01K1/38) · CPC title

• F21S48/13

  Mechanical Engineering · mapped topic

• H01K1/26

  Screens; Filters (associated with envelope H01K1/28) · CPC title

• F21S48/1172

  Mechanical Engineering · mapped topic