EP4198380B1 - Optische vorrichtung für kraftfahrzeugscheinwerfer - Google Patents

Optische vorrichtung für kraftfahrzeugscheinwerfer

Info

Publication number
EP4198380B1
EP4198380B1 EP21215781.2A EP21215781A EP4198380B1 EP 4198380 B1 EP4198380 B1 EP 4198380B1 EP 21215781 A EP21215781 A EP 21215781A EP 4198380 B1 EP4198380 B1 EP 4198380B1
Authority
EP
European Patent Office
Prior art keywords
cover
light
light guide
optical device
support structure
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
EP21215781.2A
Other languages
English (en)
French (fr)
Other versions
EP4198380A1 (de
Inventor
Etienne SILL
Santhosh PARTHASARATHY
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.)
Valeo Vision SAS
Original Assignee
Valeo Vision SAS
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 Valeo Vision SAS filed Critical Valeo Vision SAS
Priority to EP21215781.2A priority Critical patent/EP4198380B1/de
Publication of EP4198380A1 publication Critical patent/EP4198380A1/de
Application granted granted Critical
Publication of EP4198380B1 publication Critical patent/EP4198380B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • F21S41/24—Light guides
    • 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
    • F21S41/50—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
    • F21S41/55—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/50—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
    • F21S43/51—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/247—Light guides with a single light source being coupled into the light guide

Definitions

  • the present invention relates to an optical device for an automobile headlight, and more particularly to an optical device having a cover to cover a part of the optical device.
  • Optical devices are used in automobiles and the like, for lighting the path ahead and also for providing signaling functions. These lighting functions includes low beam light, high beam lights, turn indicator, parking/position lamp, tail/ stop lamp, day running lights (DRL), fog lamp and/ or signature lamp. Most of the modern optical devices use light guides that are attached facing one or more light source. The light produced by these light sources enters the light guide through a light entry portion and is propagated through the light guide by multiple total internal reflection. In optical devices having more than one lighting functions, different light guides each associated with a specific function may be provided, for example individual light guides associated with an amber light source and a white light source for turn indicator and DRL function may be provided.
  • the optical devices using light guides are known to be affected by light leakage issues.
  • the leakage may affect the optical efficiency of the optical device further affecting the lighting function as well. It is paramount in optical devices disclosed above (specifically having multiple light guides) that the light from one light guide does not leak to the other light guide.
  • the leakage may affect the lighting functionality and may create a safety issue due to light mixing, especially light color mixing. Further, the light leakage may affect the visual styling of the vehicle headlamp which may be perceived negatively by the user.
  • Some optical devices may be designed such that the light guides need to cross each other in a physical plane. This crossing of light guides is needed in order to fulfil the requirements pertaining to light guide curvature and also to meet regulation. In such optical devices the light leakage is a huge issue and may aggravate the above disclosed issues.
  • An object of the present invention is to solve the disadvantages described above of known optical devices.
  • the present invention provides an optical device as defined in claim 1 and an assembly process as defined in claim 11.
  • an optical device for an automotive vehicle comprises at least one light source configured to produce a light beam, at least one light guide configured to propagate said light beam.
  • the at least one light guide includes a light entry portion arranged facing the at least one light source to receive said light beam.
  • the optical guide comprises at least one support structure configured to support the at least one light guide and at least one cover assembled with the at least one support structure configured to cover the light entry portion of the at least one light guide.
  • the at least one cover and the at least one support structure create a hinge in an assembled state, further, the hinge is configured to rotatably secure the at least one cover and the at least one support structure around a hinge axis.
  • the cover is arranged over the light entry portion light guide thus masking light leakage from the said face of the light guide from being visible. Further, the hinge allows rotational movement that allows the cover to rotate about the hinge axis providing ease of assembly.
  • the first hinge portion comprises a pin and a supporting leg extending from said pin.
  • the supporting leg may allow the first hinge portion to be flexible, thus allowing ease of assembly.
  • the pin may allow to act as a male connection member in an assembly.
  • the at least one support structure comprises locking structure configured to mate with the clipping structure.
  • the locking structure may be configured to hold the clipping structure thus securing the cover securely.
  • the optical device further comprises a bezel configured to hide a portion of the light guides.
  • the bezel may hide provide additional styling to the optical device.
  • the cover may be designed as the bezel elements and may be configured to cover at least a part of the light guide.
  • the bezel may be designed to create a hinge with the at least one support structure in an assembled.
  • an assembly process for assembling at least one cover on at least one support structure of an optical device comprises the steps of providing a first light guide on the at least one support structure of the optical device, further, a light entry portion of the first light guide is arranged facing a light source.
  • the assembly process further comprises the step of providing at least one cover on said support structure.
  • the at least one cover is configured to form a hinge with the at least one support structure.
  • the assembly comprises the step of rotating the at least one cover about a hinge axis to cover the light entry portion of the at least one light guide.
  • the assembly process further comprises a step of providing a second light guide over the at least one cover.
  • the second light guide assembled over the at least one cover enables the light guides to be placed on the opposite side of the cover, thus preventing light leakage between the two light guides.
  • the assembly process comprises a step of providing a bezel for hiding a portion of the first light guide and the second light guide. Assembling the bezel may hide provide additional styling to the optical devices.
  • a hinge 50 may be created between the at least one cover 20 and the supporting structure 30. Further, the at least one arm 54a of the knuckle may configured to pass through said longitudinal slot 52a to allow ease of assembly and prevent translational movement of the at least one cover 40.
  • At least one guide portion 42 is an integral rib structure formed substantially perpendicular to the planar surface of the at least one cover 40.
  • the at least one segment 42 may be metalized or provided with reflective material so that the at least one segment 42 acts as an reflector to reflect any light beam back towards the at least one light guide 20.
  • the hinge 50 comprises a first hinge portion 52 and a second hinge portion 54. Additionally, the first hinge portion 52 may be guided by hinge channel 56 towards the second hinge portion 54. Once the first hinge portion 52 is assembled with the second hinge portion 54, the at least one cover 40 may be rotated about a hinge axis A-A' to cover the light entry portion 22 of the first light guide 20.
  • the assembly process comprises a step of providing a second light guide 20' over the at least one cover 40.
  • the second light guide 20' is provided on the opposite side of the at least one cover 40 as compared to the first light guide 20. Similar to the first light guide 20, light entry portion 22' of the second light guide 20' is arranged facing another light source 10.
  • the at least one cover may be secured on the support using a clipping structure that are configured to mate with locking structures of the at least one support structure 30.
  • a bezel may be provided for hiding a portion 22 of the first light guide 20 and the second light guide 20'.
  • the cover 40 is provided with an additional cover element (not shown).
  • the cover element may be connected to the cover 40 by means of an additional hinge element that enables the cover element to be rotated about the hinge element axis.
  • the cover 40 is assembled to cover the first light guide 20 and the cover element is assembled to cover the second light guide 20' in the assembled state.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (12)

  1. Optische Vorrichtung (100) für ein Kraftfahrzeug, umfassend:
    mindestens eine Lichtquelle (10), die konfiguriert ist, einen Lichtstrahl zu erzeugen;
    mindestens einen Lichtleiter (20), der konfiguriert ist, den Lichtstrahl zu propagieren, wobei der mindestens eine Lichtleiter (20) einen Lichteintrittsbereich umfasst, der der mindestens einen Lichtquelle (10) zugewandt angeordnet ist, um den Lichtstrahl zu empfangen;
    mindestens eine Trägerstruktur (30), die konfiguriert ist, den mindestens einen Lichtleiter (20) zu stützen;
    mindestens eine Abdeckung (40), die mit der mindestens einen Trägerstruktur (30) zusammengebaut ist und konfiguriert ist, den Lichteintrittsbereich des mindestens einen Lichtleiters (20) abzudecken,
    wobei die optische Vorrichtung (100) mindestens zwei Lichtleiter (20, 20') und mindestens zwei Lichtquellen (10) umfasst, und wobei jeder der Lichtleiter (20, 20') jeweils einer der mindestens zwei Lichtquellen (10) zugewandt angeordnet ist;
    dadurch gekennzeichnet, dass die mindestens eine Abdeckung (40) und die mindestens
    eine Trägerstruktur (30) im zusammengebauten Zustand ein Gelenk (50) bilden, und wobei das Gelenk (50) konfiguriert ist, die mindestens eine Abdeckung (40) und die mindestens eine Trägerstruktur (30) um eine Gelenkachse (A-A') drehbar zu sichern, wobei die mindestens eine Abdeckung (40) mindestens eine erste und eine zweite Struktur (42, 44) umfasst, die auf gegenüberliegenden Seiten der mindestens einen Abdeckung (40) vorgesehen sind, und
    wobei der erste Lichtleiter (20) von der ersten Struktur (42) umgeben ist und der zweite Lichtleiter (20') von der zweiten Struktur (44) umgeben ist.
  2. Optische Vorrichtung (100) nach Anspruch 1, wobei die mindestens eine Abdeckung (40) einen ersten Gelenkabschnitt (52) umfasst, der konfiguriert ist, relativ zu einem zweiten Gelenkabschnitt (54) der mindestens einen Trägerstruktur (30) zusammengebaut zu werden.
  3. Optische Vorrichtung (100) nach Anspruch 2, wobei der erste Gelenkabschnitt (52) mindestens einen tragenden Schenkel mit einer Vielzahl von Stiften umfasst, die sich von dem tragenden Schenkel entlang der Gelenkachse (A-A') erstrecken.
  4. Optische Vorrichtung (100) nach Anspruch 2 oder 3, wobei der zweite Gelenkabschnitt (54) eine Vielzahl von Schlitzen umfasst, die in der mindestens einen Trägerstruktur (30) ausgebildet sind.
  5. Optische Vorrichtung (100) nach einem der vorhergehenden Ansprüche, wobei die Vielzahl von Stiften (52) konfiguriert ist, mit der Vielzahl von Schlitzen (54) zusammenzupassen.
  6. Optische Vorrichtung (100) nach Anspruch 2, wobei der erste Gelenkabschnitt (52) einen Stift (52') und einen tragenden Schenkel (521') umfasst, der sich von dem Stift (52') erstreckt.
  7. Optische Vorrichtung (100) nach Anspruch 2 oder 6, wobei der zweite Abschnitt (54) mindestens einen Knöchel umfasst, der konfiguriert ist, mit dem Stift (52') zusammenzupassen.
  8. Optische Vorrichtung (100) nach Anspruch 2, wobei die mindestens eine Trägerstruktur (30) und die mindestens eine Abdeckung (40) einstückig ausgebildet sind und einen flexiblen Abschnitt aufweisen, der konfiguriert ist, eine relative Drehung zwischen der mindestens einen Trägerstruktur (30) und der mindestens einen Abdeckung (40) zu ermöglichen.
  9. Optische Vorrichtung (100) nach einem der vorhergehenden Ansprüche, wobei die mindestens eine Abdeckung (40) mindestens ein Segment (42) umfasst, das angepasst ist, einen Teil des mindestens einen Lichtleiters (20) zu umgeben.
  10. Optische Vorrichtung (100) nach einem der vorhergehenden Ansprüche, wobei die mindestens eine Abdeckung (40) ferner eine Clipping-Struktur (46) umfasst, die konfiguriert ist, die mindestens eine Abdeckung (40) an der mindestens einen Trägerstruktur (30) zu sichern.
  11. Montageverfahren zum Montieren mindestens einer Abdeckung (40) an mindestens einer Trägerstruktur (30) einer optischen Vorrichtung (100) für ein Kraftfahrzeug nach Anspruch 1, wobei das Montageverfahren die Schritte umfasst:
    Bereitstellen eines ersten Lichtleiters (20) auf der mindestens einen Trägerstruktur (30) der optischen Vorrichtung (100), wobei ein Lichteintrittsbereich (22) des ersten Lichtleiters (20) einer Lichtquelle (10) zugewandt angeordnet ist;
    Bereitstellen mindestens einer Abdeckung (40) auf der Trägerstruktur (30), wobei die mindestens eine Abdeckung (40) konfiguriert ist, ein Gelenk (50) mit der mindestens einen Trägerstruktur (30) zu bilden; und
    Drehen der mindestens einen Abdeckung (40) um eine Gelenkachse (A-A'), um den Lichteintrittsbereich (22) des mindestens einen Lichtleiters (20) abzudecken,
    wobei das Montageverfahren ferner einen Schritt des Bereitstellens eines zweiten Lichtleiters (20') über der mindestens einen Abdeckung (40) umfasst,
    wobei die mindestens eine Abdeckung (40) mindestens eine erste und eine zweite Struktur (42, 44) umfasst, die auf gegenüberliegenden Seiten der mindestens einen Abdeckung (40) vorgesehen sind, und wobei der erste Lichtleiter (20) von der ersten Struktur (42) umgeben ist und der zweite Lichtleiter (20') von der zweiten Struktur (44) umgeben ist.
  12. Montageverfahren nach Anspruch 11, wobei das Montageverfahren ferner einen Schritt des Sicherns der mindestens einen Abdeckung an dem Träger mittels einer Clipping-Struktur umfasst.
EP21215781.2A 2021-12-17 2021-12-17 Optische vorrichtung für kraftfahrzeugscheinwerfer Active EP4198380B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21215781.2A EP4198380B1 (de) 2021-12-17 2021-12-17 Optische vorrichtung für kraftfahrzeugscheinwerfer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21215781.2A EP4198380B1 (de) 2021-12-17 2021-12-17 Optische vorrichtung für kraftfahrzeugscheinwerfer

Publications (2)

Publication Number Publication Date
EP4198380A1 EP4198380A1 (de) 2023-06-21
EP4198380B1 true EP4198380B1 (de) 2025-08-13

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EP (1) EP4198380B1 (de)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7079119B2 (en) * 2002-02-28 2006-07-18 Palm, Inc. Cover for electronic device
TW575197U (en) * 2003-04-30 2004-02-01 Toppoly Optoelectronics Corp Backlight plate module
US20100000052A1 (en) * 2008-07-03 2010-01-07 Chia-Ko Chung Slide hinge
JP5575592B2 (ja) * 2010-09-17 2014-08-20 株式会社小糸製作所 車両用灯具
KR20120078332A (ko) * 2010-12-31 2012-07-10 엘지디스플레이 주식회사 액정 표시 장치
CN106382586B (zh) * 2016-08-29 2019-10-08 重庆长安汽车股份有限公司 一种车灯的防光导漏光结构
FR3066252B1 (fr) * 2017-05-15 2020-10-30 Automotive Lighting Rear Lamps France Dispositif d'eclairage pour un feu de signalisation pour vehicule automobile, favorisant la propagation d'une plus grande quantite de lumiere dans un guide de lumiere
CN107893966A (zh) * 2017-11-14 2018-04-10 上海小糸车灯有限公司 一种防止光导漏光的灯具
CN210511493U (zh) * 2019-06-18 2020-05-12 法雷奥照明湖北技术中心有限公司 光学组件和用于车辆的车灯

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