Motor vehicle and motor vehicle headlamp with a front housing

Patent metadata

Field	Value
Publication number	US-2016377254-A1
Application number	US-201615262225-A
Country	US
Kind code	A1
Filing date	Sep 12, 2016
Priority date	Mar 12, 2014
Publication date	Dec 29, 2016
Grant date	—

Abstract

A motor vehicle headlamp including a housing in which at least one main light source is arranged, at least one further light-emitter, a heat sink for cooling the light-emitter, an at least partially transparent external lens that closes off the housing from the external environment of the motor vehicle headlamp and has an inner side facing the interior of the housing and an outer side facing the external environment, a front housing that is arranged in front of the outer side of the external lens. A light-guiding element is arranged in or on the front housing that at least partially fills the interior of the front housing or forms at least part of a wall of the front housing and guides light radiated inwards by the light-emitter. A motor vehicle is provided that includes a motor vehicle headlamp and a cooling grille having at least one cooling grille lamination.

First claim

What is claimed is:

1 . A motor vehicle headlamp comprising:
a housing; at least one main light source arranged in the housing; at least one additional lamp; a heat sink for cooling the at least one additional lamp; an at least partially transparent external lens that seals the housing from an outside environment of the motor vehicle headlamp, the external lens having an inner side facing an interior of the housing and an outer side facing the outside environment; a front housing arranged in front of the outer side of the external lens; and a light-guiding element arranged in or on the front housing, the light-guiding element at least partially filling the interior of the front housing or forms at least a portion of a wall of the front housing, the light-guiding element being adapted to guide light radiated from the at least one lamp.

2 . The motor vehicle headlamp according to claim 1 , wherein the light-guiding element is an elongated light guide.

3 . The motor vehicle headlamp according to claim 1 , wherein a collimator optical system that is adapted to focus the light emitted by the at least one lamp is arranged in front of the at least one lamp.

4 . The motor vehicle headlamp according to claim 3 , wherein the collimator optical system is arranged at least partially inside the housing.

5 . The motor vehicle headlamp according to claim 1 , wherein the at least one additional lamp and the heat sink are arranged in the housing.

6 . The motor vehicle headlamp according to claim 2 , wherein at least one region of the wall of the front housing facing the external lens is configured as a lens through which the at least one additional lamp radiates light into the front housing and behind which are arranged inside the front housing, on the interior, reflecting optics via which incident light is deflected into the elongated light guide.

7 . The motor vehicle headlamp according to claim 6 , wherein the lens, the reflecting optics, and/or the elongated light guide are one contiguous, common component.

8 . The motor vehicle headlamp according to claim 2 , wherein the reflecting optics have an input side and an output side, wherein the input side comprises a portion of the external lens, and the reflecting optics project into the front housing through an opening formed in a wall of the front housing, wherein at least a portion of the output side of the reflecting optics is arranged inside of the front housing and in front of a light input point of the elongated light guide.

9 . The motor vehicle headlamp according to claim 8 , wherein the collimator optical system has an output surface that coincides at least partially with the input side of the reflecting optics and the collimator optical system, and wherein the external lens and the reflecting optics are one common, contiguous component.

10 . The motor vehicle headlamp according to claim 2 , wherein the external lens has a projection extending towards the outside environment that projects into the front housing through an opening formed in a wall of the front housing, wherein the lamp together with the collimator optical system located in front of it, is arranged in the projection and couples light into the elongated light guide.

11 . The motor vehicle headlamp according to claim 2 , wherein the collimator optical system has an output surface and is formed as one piece with the external lens, wherein the output surface of the collimator optical system comprises a portion of the external lens or the output surface of the collimator optical system is arranged outside of the housing between the outer side of the external lens and a wall of the front housing.

12 . The motor vehicle headlamp according to claim 11 , wherein the external lens forms a wall of the front housing.

13 . The motor vehicle headlamp according to claim 12 , wherein the wall of the front housing opposite the external lens is at least partially composed of another lens that has at least one structure for light input and/or one structure for light output.

14 . The motor vehicle headlamp according to claim 12 , wherein the external lens has at least one structure for light output, at least in a region of the output surface of the collimator optical system, and wherein the wall of the front housing opposite the external lens is at least partially composed of an additional lens.

15 . The motor vehicle headlamp according to claim 6 , wherein the reflecting unit is a prism or a mirror arrangement.

16 . The motor vehicle headlamp according to claim 1 , wherein the at least one additional lamp and the heat sink are arranged in or on the front housing.

17 . The motor vehicle headlamp according to claim 16 , wherein the at least one additional lamp and the heat sink are arranged on a back of the front housing that faces the external lens.

18 . The motor vehicle headlamp according to claim 3 , wherein the collimator optical system is arranged at least partially inside of the front housing.

19 . The motor vehicle headlamp according to claim 16 , wherein the at least one additional lamp and/or the heat sink extend at least partially into the front housing.

20 . The motor vehicle headlamp according to claim 1 , wherein the front housing extends in a hook shape over at least a portion of the external lens.

21 . The motor vehicle headlamp according to claim 1 , wherein the external lens is integrally joined to the housing.

22 . The motor vehicle headlamp according to claim 1 , wherein the front housing is joined to the housing of the motor vehicle headlamp in a nondestructively detachable manner by one or more fastening elements.

23 . The motor vehicle headlamp according to claim 22 , wherein the front housing is joined to the housing of the motor vehicle headlamp via a clip connection.

24 . A motor vehicle comprising:
a motor vehicle headlamp according to claim 1 ; and a radiator grill with at least one radiator grill fin, wherein the front housing visually forms an extension of the at least one radiator grill fin.

Assignees

• Volkswagen Ag

Inventors

• Thiel Alexander
• Dordel Eduard

Classifications

• F21S41/50

  characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers · CPC title

• F21S43/40

  characterised by the combination of reflectors and refractors · CPC title

• F21S45/50

  Waterproofing · CPC title

• B60Q1/0041

  of several lamps in relation to each other · CPC title

• F21S45/47 Primary

  Passive cooling, e.g. using fins, thermal conductive elements or openings · CPC title