CN106796013B - Vehicle headlight - Google Patents

Vehicle headlight Download PDF

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Publication number
CN106796013B
CN106796013B CN201580054352.8A CN201580054352A CN106796013B CN 106796013 B CN106796013 B CN 106796013B CN 201580054352 A CN201580054352 A CN 201580054352A CN 106796013 B CN106796013 B CN 106796013B
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CN
China
Prior art keywords
headlamp
outer lens
housing
vehicle headlamp
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201580054352.8A
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Chinese (zh)
Other versions
CN106796013A (en
Inventor
C·勒达尔
W·M·贡萨尔维斯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of CN106796013A publication Critical patent/CN106796013A/en
Application granted granted Critical
Publication of CN106796013B publication Critical patent/CN106796013B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/50—Waterproofing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof
    • F21S41/295—Attachment thereof specially adapted to projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/28—Cover glass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

The invention relates to a vehicle headlamp, comprising: at least one light source (20) arranged in the headlamp housing (10) to emit light; and at least one outer lens (30) configured to project light rays emitted by the at least one light source (20) towards the exterior of the headlamp housing (10). The headlamp housing (10) is movable relative to the at least one outer lens (30), and the headlamp comprises a labyrinth seal (40) between the at least one outer lens (30) and the headlamp housing (10).

Description

Vehicle headlight
Technical Field
The present invention generally relates to a light headlamp, also referred to as a headlamp, which is mounted on a motor vehicle.
Background
Document EP2325883 discloses a headlamp of the known type, which has: a housing comprising one or more light sources (of the type of electroluminescent diodes (LEDs or DELs), halogen lamps or conventional filament bulbs), a lens, and/or a mirror configured to direct the emitted light in a particular direction. The surface of the housing is a transparent glass for enabling light to be projected toward the outside of the headlamp while ensuring good sealing of the housing. Therefore, if movable elements are provided in the housing (e.g. to adjust the projection azimuth and/or height), these movable elements are protected against external contaminants (e.g. sand, gravel or water) by the glass.
This transparent glass is usually glued to the housing wall and has several disadvantages:
the transparent glass transmits only a portion of the light received by the transparent glass (until 10% of the light is absorbed by the glass),
the transparent glass can become opaque (and absorb more light) over time,
the transparent glass increases the cost of the headlamp,
the transparent glass requires a complex and expensive pasting method,
the transparent glass covers or shields the technical elements of the headlight from the outside, which limits the external features of the vehicle.
Disclosure of Invention
The object of the present invention is to overcome the drawbacks of the prior art documents described above, and in particular it is the first object of the present invention to provide a vehicle headlamp provided with a movable element, without an outside glass, but without the risk of exposing the movable element to external contaminants.
To this end, a first aspect of the invention relates to a vehicle headlamp comprising at least one light source arranged in a headlamp housing to emit light; and at least one outer lens configured to project light rays emitted by the at least one light source toward an exterior of the headlamp housing, characterized in that the headlamp housing is movable relative to the at least one outer lens, and the headlamp includes a labyrinth seal between the at least one outer lens and the headlamp housing.
The headlamp according to the above embodiment is simple and inexpensive because the headlamp has no glass (the outside of the headlamp housing is bounded by the outer lens), but movement may occur between the headlamp housing and the outer lens due to the labyrinth seal member. Finally, the labyrinth seal member is disposed between the headlamp housing and the outer lens, which enables these elements to be held without changing the internal structure.
Advantageously, the labyrinth seal member comprises:
-at least one wall integral with one of the headlamp housing and the outer lens,
-at least one cut-out integral with the other of the headlamp housing and the outer lens,
the at least one cutout is configured to receive the at least one wall and thereby define at least one labyrinth.
Advantageously, at least one of the at least one wall and the at least one cutout is flexible so as to deform upon relative movement between the headlamp housing and the at least one outer lens. In addition to the inherent movability of the labyrinth seal, the labyrinth seal is sufficiently flexible for deformation and to provide more movement between the movable parts.
Advantageously, the labyrinth seal is configured to allow a ball-and-socket connection between the outer lens and the headlamp housing.
Advantageously, said at least one light source is of the electroluminescent diode type.
Advantageously, the labyrinth seal exhibits rotational symmetry about a ray casting axis at intermediate azimuth and intermediate elevation. The middle axis is located halfway in each adjustment direction.
Advantageously, the vehicle headlamp comprises a heat dissipating component joined to the at least one light source. Heat sinks, metal parts or parts with strong heat conductivity may be considered.
Advantageously, the vehicle headlamp comprises at least one adjustment motor which adjusts the azimuth axis and/or the altitude axis of the light projection.
Advantageously, the vehicle headlamp is devoid of glass.
A second aspect of the invention relates to a motor vehicle comprising at least one vehicle headlamp according to the first aspect of the invention.
Drawings
Other characteristics and advantages of the invention will become better apparent from reading the following detailed description of an embodiment of the invention, given by way of non-limiting example, and the accompanying drawings, in which:
fig. 1 shows a sectional view of a headlight according to the invention.
Detailed Description
Fig. 1 shows a vehicle headlamp, in particular comprising a housing 10 containing a light source 20, here for example one or more electroluminescent diodes, which are configured to emit light in order to project a light beam, for example of the low beam or high beam type.
The light source 20 may also be a halogen lamp or a conventional filament bulb. In the case of diode technology, the light source may be mounted on a heat sink 60 (e.g., an aluminum heat sink).
In order to guide the light emitted by the light source 20, the headlight comprises a light guide element, which here has the form of a reflector housing 50 covering the light source 20. In order to project a light beam that meets the specifications of the material towards the outside of the headlamp, the headlamp comprises an outer lens 30 that receives the light emitted by the light source 20 and guided by the casing 50 and focuses it according to the required criteria to form a suitable light beam (of the low beam or of the high beam).
Since the illustrated headlamp does not include glass, the outer lens 30 is therefore directly exposed to external erosion (e.g., sand, gravel, or water).
The light source 20, the housing 50 and the outer lens 30 may all be mounted on a mount 80 to form a module loaded with these elements.
The head lamp is also equipped with adjustment means for adjusting the orientation of the light beam emitted by the outer lens 30, such as an assembly of motor 70-worm 75, which is able to adjust the height of the projected light beam. It is conceivable to provide a pivot connection between the headlamp housing 10 and the mount 80 (and thus the outer lens 30) if only the height is to be adjusted, but also a ball-and-socket connection if the azimuth angle with respect to the vehicle is to be adjusted.
In this case or for other adjustment reasons, a possible movement between the headlight housing 10 and the outer lens 30 has to be retained. This movement should not destroy the sealing property of the interior of the headlamp housing 10, and the present invention proposes to dispose the labyrinth seal member 40 between the outer lens 30 and the headlamp housing 10.
These labyrinth seal members 40 comprise two continuous walls 42 associated with the outer lens 30, which are inserted in two continuous cut-outs 41 associated with the headlamp housing 10 itself. The leakage path is thus considerably longer and it is also conceivable to force contact between these parts. In addition, these labyrinth seal members 40 can hold the headlamp housing 10, the interior of the headlamp housing (the module supported by the mount 80), and the standard outer lens 30, so as to limit the impact on cost.
In order to allow the above (height and/or azimuth) adjustment movement, it is also conceivable to provide flexible walls 42 and/or cutouts 41 to deform said walls and/or cutouts upon adjustment.
It is understood that various changes and/or modifications obvious to a person skilled in the art may be added to the different embodiments of the invention described in the present description without departing from the scope of protection of the invention as defined by the appended claims.

Claims (9)

1. A vehicle headlamp comprising: at least one light source (20) arranged in the headlamp housing (10) to emit light; and at least one outer lens (30) configured for projecting light rays emitted by the at least one light source (20) towards the outside of the headlamp housing (10), characterized in that the headlamp housing (10) is movable with respect to the at least one outer lens (30), and the vehicle headlamp comprises a labyrinth seal (40) between the at least one outer lens (30) and the headlamp housing (10), the labyrinth seal (40) being configured for allowing a ball-and-socket connection between the outer lens (30) and the headlamp housing (10).
2. The vehicle headlamp of claim 1, wherein the labyrinth seal member (40) includes:
-at least one wall (42) integral with one of the headlamp housing (10) and the outer lens (30),
-at least one cut-out (41) integral with the other of the headlamp housing (10) and the outer lens (30),
the at least one cut-out (41) is configured for receiving the at least one wall (42) and thus defining at least one labyrinth.
3. Vehicle headlamp according to claim 2, wherein at least one of the at least one wall (42) and the at least one cutout (41) is flexible so as to deform upon relative movement between the headlamp housing (10) and the at least one outer lens (30).
4. Vehicle headlamp according to any of claims 1 to 3, wherein the at least one light source (20) is of the electroluminescent diode type.
5. Vehicle headlamp according to any of claims 1 to 3, wherein the labyrinth seal (40) exhibits a rotational symmetry about a ray projection axis of intermediate azimuth and intermediate elevation.
6. Vehicle headlamp according to any of claims 1 to 3, comprising a heat sink (60) joined to the at least one light source (20).
7. Vehicle headlamp according to any of claims 1 to 3, comprising at least one adjustment motor (70) which adjusts the azimuth axis and/or the altitude axis of the light projection.
8. Vehicle headlamp according to any of claims 1 to 3, characterized in that the vehicle headlamp is devoid of glass.
9. A motor vehicle comprising at least one vehicle headlamp according to any of the preceding claims.
CN201580054352.8A 2014-10-06 2015-09-16 Vehicle headlight Active CN106796013B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1459535 2014-10-06
FR1459535A FR3026823B1 (en) 2014-10-06 2014-10-06 VEHICLE PROJECTOR
PCT/FR2015/052480 WO2016055709A1 (en) 2014-10-06 2015-09-16 Vehicle headlight

Publications (2)

Publication Number Publication Date
CN106796013A CN106796013A (en) 2017-05-31
CN106796013B true CN106796013B (en) 2020-01-03

Family

ID=52358901

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201580054352.8A Active CN106796013B (en) 2014-10-06 2015-09-16 Vehicle headlight

Country Status (5)

Country Link
EP (1) EP3204688B1 (en)
CN (1) CN106796013B (en)
ES (1) ES2702967T3 (en)
FR (1) FR3026823B1 (en)
WO (1) WO2016055709A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3066579B1 (en) * 2017-05-19 2019-09-20 Peugeot Citroen Automobiles Sa ICE-FREE VEHICLE PROJECTOR ASSEMBLY
FR3086733B1 (en) * 2018-09-27 2020-09-04 Psa Automobiles Sa LIGHTING MODULE FOR AUTOMOTIVE VEHICLE GLASS-FREE PROJECTOR
FR3086610B1 (en) * 2018-09-27 2021-04-23 Psa Automobiles Sa MOTOR VEHICLE INCLUDING A HEADLIGHT WITHOUT PROTECTIVE GLASS
FR3088104A1 (en) * 2018-11-05 2020-05-08 Psa Automobiles Sa PROTECTIVE GLASS-FREE PROJECTOR FOR MOTOR VEHICLE
EP3660393B1 (en) * 2018-11-30 2024-03-27 Valeo Iluminacion, S.A. Automotive lighting device
FR3107334B1 (en) * 2020-02-19 2022-03-04 Psa Automobiles Sa Method of defrosting an optical lens of a projector without glass using a heating device.
FR3119441A1 (en) * 2021-02-02 2022-08-05 Psa Automobiles Sa OPTICAL BLOCK WITH EXTERNAL OPTICAL MODULE WITH DEFLECTION, FOR ONE VEHICLE

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CN203273438U (en) * 2013-05-28 2013-11-06 广东凯西欧照明有限公司 LED lamp bulb with adjustable light spot
CN103727428A (en) * 2012-10-10 2014-04-16 株式会社小糸制作所 Lamp
CN103953887A (en) * 2014-05-19 2014-07-30 哈尔滨固泰电子有限责任公司 LED (light emitting diode) front fog lamp dimming structure
CN103994384A (en) * 2013-02-15 2014-08-20 株式会社小糸制作所 Vehicle lighting device

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EP1547862B1 (en) * 2003-12-23 2008-08-27 Hella KGaA Hueck & Co. Vehicle headlight
DE102008061526A1 (en) * 2008-12-10 2010-06-17 Daimler Ag Vehicle i.e. motor vehicle, headlight, has cooling bodies, which are thermally coupled with LED light sources arranged within housing by carrier elements, and cooling element movably supported with LED light sources
JP2011108588A (en) 2009-11-20 2011-06-02 Koito Mfg Co Ltd Light emitting module and vehicle lamp
SI23213A (en) * 2009-11-24 2011-05-31 Hella Saturnus Slovenija, Proizvodnja Svetlobne Opreme Za Motorna In Druga Vozila, D.O.O. Gasket between housing and position-adjustable reflector of motor vehicle illuminant

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Publication number Priority date Publication date Assignee Title
CN103727428A (en) * 2012-10-10 2014-04-16 株式会社小糸制作所 Lamp
CN103994384A (en) * 2013-02-15 2014-08-20 株式会社小糸制作所 Vehicle lighting device
CN203273438U (en) * 2013-05-28 2013-11-06 广东凯西欧照明有限公司 LED lamp bulb with adjustable light spot
CN103953887A (en) * 2014-05-19 2014-07-30 哈尔滨固泰电子有限责任公司 LED (light emitting diode) front fog lamp dimming structure

Also Published As

Publication number Publication date
CN106796013A (en) 2017-05-31
EP3204688A1 (en) 2017-08-16
WO2016055709A1 (en) 2016-04-14
ES2702967T3 (en) 2019-03-06
FR3026823B1 (en) 2016-12-02
FR3026823A1 (en) 2016-04-08
EP3204688B1 (en) 2018-10-31

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