EP3650745B1 - Beleuchtungsvorrichtung für fahrzeuge mit lichtleitern - Google Patents

Beleuchtungsvorrichtung für fahrzeuge mit lichtleitern Download PDF

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Publication number
EP3650745B1
EP3650745B1 EP19208726.0A EP19208726A EP3650745B1 EP 3650745 B1 EP3650745 B1 EP 3650745B1 EP 19208726 A EP19208726 A EP 19208726A EP 3650745 B1 EP3650745 B1 EP 3650745B1
Authority
EP
European Patent Office
Prior art keywords
housing
lighting device
seat
interface element
light guides
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
EP19208726.0A
Other languages
English (en)
French (fr)
Other versions
EP3650745A1 (de
Inventor
Giuseppe LA FERRARA
Marco BORGO
Ciro IANNONE
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.)
Marelli Automotive Lighting Italy SpA
Original Assignee
Marelli Automotive Lighting Italy SpA
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 Marelli Automotive Lighting Italy SpA filed Critical Marelli Automotive Lighting Italy SpA
Publication of EP3650745A1 publication Critical patent/EP3650745A1/de
Application granted granted Critical
Publication of EP3650745B1 publication Critical patent/EP3650745B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • 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
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/19—Attachment of light sources or lamp holders
    • F21S43/195—Details of lamp holders, terminals or connectors
    • 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
    • F21S43/27—Attachment thereof

Definitions

  • the invention relates to a lighting device for vehicles, in particular a headlight for a vehicle, such as a motor vehicle, wherein one or more light guides are used, which are preferably lit by LEDs and are designed to carry out signalling functions (for example: position, direction, DRL) or aesthetic functions.
  • a lighting device for vehicles in particular a headlight for a vehicle, such as a motor vehicle, wherein one or more light guides are used, which are preferably lit by LEDs and are designed to carry out signalling functions (for example: position, direction, DRL) or aesthetic functions.
  • a vehicle lighting device comprises a cup-shaped body or housing, which is generally manufactured by moulding of a synthetic plastic material, at least one lighting element, which is housed in the cup-shaped body, and a transparent element, which closes a front opening of the cup-shaped body and, in use, faces the driving direction of the vehicle.
  • light guides which are lit by means of one or more LEDs (or by means of other different light sources), are used as lighting elements, in particular in order to carry out signalling functions, as position lamps, direction lights, DRL, etcetera.
  • the transparent element or lens closing the front opening of the headlight body is optically neutral and different light guides are placed inside the headlight body so as to be visible through the transparent element.
  • the LEDs (or other different lighting sources) used to light the light guides are carried at the back by the cup-shaped housing or body, in the area of a rear through seat thereof, which is not necessarily aligned with the front opening, or in the area of a lateral through seat thereof, since the light guides usually consist of elongated rod-shaped elements, which are flexible or anyway curved and receive the light at a first end of theirs in order to be then party or entirely lit over their length or in order to be lit only in the area of a second end of theirs, which is opposite the first one.
  • Said rear or lateral through seat of the cup-shaped body is closed by a plate-shaped support element carrying the LED/s and externally fixed, in a removable manner, to the cup-shaped body or housing.
  • the plate-shaped support element is usually provided with the necessary electrical connections and with heat dissipators used to dispose of the heat produced, in use, by the LEDs.
  • the light guides are assembled on the headlight body or housing before mounting the plate-shaped support with the LEDs already assembled on it, there is the problem of ensuring a correct placing of the first ends of the light guides relative to the respective lighting LEDs, which are all carried by the same plate-shaped support.
  • the light guides are assembled, on the side of their first end, on an interface element, which is preferably provided with elastically deformable seats, which are configured to receive, in a through manner, the first ends of the light guide or of the bundle of light guides to be lit.
  • the interface element is configured to be housed in the aforesaid rear or lateral through seat of the cup-shaped housing or body with a radial clearance.
  • an adapter element is fixed on the interface element in an integral manner, on the opposite side relative to the light guides, and is coupled, substantially without clearances, within the through seat, said adapter element being provided with through seats, which are designed to be coupled, substantially without clearances, to the first ends of the light guides, which, therefore, are forced to assume a correct position relative to the housing.
  • US 2016/281954 A1 discloses such a lighting device for a vehicle.
  • the object of the invention is to provide a lighting device for vehicles, in particular a headlight or lamp for motor vehicles, which is not affected by the drawbacks of the prior art and, in particular, allows, in a simple, economic and compact fashion, for the recovery of assembling clearances of the light guides along all the three axes defining the position thereof relative to the lighting LED/s (or other light source).
  • a lighting device for vehicles in particular a headlight or lamp for motor vehicles, according to the appended claims.
  • reference number 1 indicates, as a whole, a front headlight for motor vehicles, which is configured to be fixed in a known manner, which is not shown herein for the sake of simplicity, to the body of a vehicle (which is also known and not shown).
  • the lighting device 1 comprises a housing 2, at least one lighting element 3, which is at least partly housed in the housing 2 so as to be at least partly visible from the outside through a front opening 4 of the housing 2, and at least one light source 5, which is arranged on a support element 6, well shown in figure 3 , and is configured to at least partly light the lighting element 3.
  • the lighting element consists of at least one known light guide 3, which has an elongated shape and includes a first end 7 facing away from the front opening 4.
  • the lighting element consists of a bundle of light guides 3 beside one another, whose respective first ends 7 are each operatively associated with a respective LED or group of LEDs 5 carried by the support element 6.
  • the support element 6 is coupled to the housing 2 in a removable manner so as to close a through seat 8 of the housing 2 arranged at the back or on the side thereof.
  • each light guide 3 is housed so as to go through an interface element 9 and an adapter element 10, which, in turn, is coupled to the interface element 9 in an integral manner and is arranged between the latter and the support element 6 for the LEDs 5, facing them.
  • the adapter element 10 and the interface element 9 are both housed, in the way described below, within the through seat 8 of the housing 2.
  • the adapter element 10 is constrained to the interface element 9 by means of a screw 11 and a threaded nut 12.
  • the screw 11 comprises ( figure 5 ) an activation head 13 and a shank 14 having a first threaded stretch 15 and a second threaded stretch 16 arranged between the activation head 13 and the threaded stretch 15.
  • the first threaded stretch 15 is screwed into a reception seat 18 of the interface element 9 so that the screw 11 and the interface element 9 are movable relative to one another along an axis of symmetry A of the screw 11.
  • the first threaded stretch 15 is self-tapping and the reception seat of the interface element 9 designed to receive it, into which the first threaded stretch 15 is screwed with the possibility of making a predetermined axial movement, is defined by a smooth lateral wall of a recess defined by a cup-shaped portion 19 of a bottom wall 20 of the interface element 9.
  • the cup-shaped portion 19 of the bottom wall 20 projects from the bottom wall 20, on the opposite side relative to the first ends 7 of the light guides 3 and, hence, towards the front opening 4.
  • the threaded nut 12 is screwed onto the second threaded stretch 16 so as to axially strike against a bottom wall 21 of the adapter element 10.
  • the adapter element 10 furthermore, has a peripherally outer edge 22, which is coupled to an annular lateral wall 23 of the through seat 8 of the housing 2.
  • the interface element 9 is provided with elastically deformable seats 24, which are configured to receive, in a through manner, the respective first ends 7 of the light guides 3 of the bundle of light guides to be lit.
  • the seats 24 are defined by elastically deformable wings, which are manufactured as one single piece together with, and axially project from, the bottom wall 20, on the same side as the cup-shaped portion 19.
  • the interface element 9 is configured to be housed in the through seat 8 of the housing 2 with a radial clearance.
  • the adapter element 10 is fixed on the interface element 9 in an integral manner, on the opposite side relative to the light guide/bundle of light guides 3 as well as to the cup-shaped portion 19, and is coupled within the through seat 8 of the housing 2 substantially without clearances.
  • the adapter element 10 is also provided with through seats 25, which are designed to be coupled to the first end 7 of the light guide 3 / of the bundle of light guides 3 substantially without clearances.
  • the support element 6 for the LEDs 5, the interface element 9 and the adapter element 10 are shaped like plates and are coupled superimposed to one another in overlapped positions.
  • the LEDs 5 constituting said at least one light source or a plurality of light sources to light the light guides 3 are powered by an electric connector 26, which is integrated with the support element 6 and projects from the latter on the opposite side relative to the ends 7 of the light guides or of the bundle of light guides 3.
  • the support element 6 is further provided with an annular collar 27 ( figure 3 ), which projects towards the light guide 3 or the bundle of light guides 3 and is coupled in contact, substantially without clearances and in a fluid-tight manner, to the annular lateral wall 23 of the through seat 8 of the housing 2.
  • the support element 6 On the opposite side relative to the annular collar 27, the support element 6 is also provided with a flange 28, which is fixed by means of removable connection means, preferably, like in the example shown herein, consisting of screws 30, against a peripheral front edge 31 of the through seat 8 of the housing 2.
  • the light guides 3 are fitted in position on the housing 2 with their ends 7 bent on the opposite sides relative to the front opening 4; the ends 7 are then inserted, one at a time, into the seats 24 of the interface element 9 and the latter is introduced into the through seat 8, where it is housed with a radial clearance.
  • the adapter element 10 is fitted against the interface element 9, inserting the ends 7 of the light guides 3 into the through seats 25 and the screw 11, without the threaded nut 12 and already at least partially screwed into the reception seat 18, into a through hole 32 made through the bottom wall 21 of the adapter element 10.
  • the adapter element 10 is also inserted into the through seat 8, coupling its radially outer peripheral edge 22 to the lateral wall 23.
  • This operation causes the interface element 9 to be repositioned in the seat 8 and, especially, the single ends 7 of the light guides 3 to be repositioned relative to the lateral wall 23 and in the elastically deformable through seats 24 of the interface element 9, thus recovering the assembling tolerances of the light guides 3 along the axes Y and Z of the X,Y,Z reference system schematically shown in figure 5 .
  • the nut 12 is fitted on the threaded stretch 16 until it strikes against the bottom wall 21 and, subsequently, by acting, with suitable tools, both upon the activation head 13 and upon the nut 12, the threaded stretch 15 is further screwed into or unscrewed from the reception seat 18, always causing the nut 12 to strike again against the bottom wall 21.
  • the invention also applies to a vehicle comprising a lighting device 1, headlight or lamp, of the type described above, thus allowing, in use, for a better lighting of the road.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Claims (10)

  1. Beleuchtungsvorrichtung (1) für ein Fahrzeug, insbesondere Scheinwerfer für ein Kraftfahrzeug, mit einem Gehäuse (2), wenigstens einem Beleuchtungselement (3), das wenigstens teilweise innerhalb des Gehäuses (2) untergebracht ist, so dass es über eine vordere Öffnung (4) des Gehäuses (2) wenigstens teilweise von außen sichtbar ist, und wenigstens einer Lichtquelle (5), die an einem mit dem Gehäuse (2) lösbar gekoppelten Trägerelement (6) angeordnet ist, um einen rückseitig oder seitlich angeordneten Durchgangssitz (8) des Gehäuses (2) zu verschließen, wobei die wenigstens eine Lichtquelle (5) dafür konfiguriert ist, das wenigstens eine Beleuchtungselement zu beleuchten, das aus einem Lichtleiter (3) besteht, der eine langgestreckte Form aufweist und ein erstes Ende (7) umfasst, das operativ der wenigstens einen Lichtquelle (5) zugeordnet ist, wobei das erste Ende (7) des Lichtleiters (3) so untergebracht ist, dass es durch ein Schnittstellenelement (9) und ein Adapterelement (10) verläuft, welches wiederum integral mit dem Schnittstellenelement (9) gekoppelt ist und zwischen dem letzteren und dem Trägerelement (6) der mindestens einen Lichtquelle (5), die diesem zugewandt ist, angeordnet ist, wobei das Adapterelement (10) und das Schnittstellenelement (9) beide innerhalb des Durchgangssitzes (8) des Gehäuses (2) untergebracht sind; wobei das Adapterelement (10) durch eine Schraube (11) und eine Gewindemutter (12) an dem Schnittstellenelement (9) gehalten wird; dadurch gekennzeichnet, dass die Schraube (11) einen Betätigungskopf (13) und einen Schaft (14) mit einem ersten Gewindeteil (15) und einem zweiten Gewindeteil (16) aufweist, der zwischen dem Betätigungskopf (13) und dem ersten Gewindeteil (15) angeordnet ist, wobei der erste Gewindeteil (15) in einen Aufnahmesitz (18) des Schnittstellenelements (9) eingeschraubt ist, so dass die Schraube (11) und das Schnittstellenelement (9) entlang einer Symmetrieachse (A) der Schraube (11) relativ beweglich sind; wobei die Gewindemutter (12) so auf den zweiten Gewindeteil (16) aufgeschraubt ist, dass sie axial an einer Bodenwand (21) des Adapterelements (10) anliegend koppelt.
  2. Beleuchtungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Adapterelement (10) einen umlaufenden Außenrand (22) aufweist, der mit einer ringförmigen Seitenwand (23) des Durchgangssitzes (8) des Gehäuses (2) koppelt.
  3. Beleuchtungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sie mehrere Beleuchtungselemente umfasst, die in einem Bündel von langgestreckten Lichtleitern (3) bestehen; wobei das Schnittstellenelement (9) mit elastisch verformbaren Sitzen (24) versehen ist, die dafür konfiguriert sind, die jeweiligen ersten Enden (7) der zu beleuchtenden Lichtleiter (3) des Bündels von Lichtleitern (3) in durchgehender Weise aufzunehmen.
  4. Beleuchtungsvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Schnittstellenelement (9) dafür konfiguriert ist, mit radialem Spiel innerhalb des Durchgangssitzes (8) des Gehäuses (2) untergebracht zu werden.
  5. Beleuchtungsvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Adapterelement (10) auf der dem wenigstens einen Lichtleiter (3) oder einem Bündel von Lichtleitern (3) gegenüberliegenden Seite integral an dem Schnittstellenelement (9) befestigt ist und im Wesentlichen ohne Radialspiel innerhalb des Durchgangssitzes (8) des Gehäuses (2) gekoppelt ist.
  6. Beleuchtungsvorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass das Adapterelement (10) mit Durchgangssitzen (25) versehen ist, die dafür ausgelegt sind, ohne Radialspiel mit dem ersten Ende (7) des wenigstens einen Lichtleiters (3) oder des Bündels von Lichtleitern (3) zu koppeln.
  7. Beleuchtungsvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der erste Gewindeteil (15) selbstschneidend ist, wobei der Aufnahmesitz (18) des Schnittstellenelements (9), in den der erste Gewindeteil (15) eingeschraubt ist, durch eine glatte Seitenwand einer Ausnehmung definiert ist, die durch einen becherförmigen Abschnitt (19) einer Bodenwand (20) des Schnittstellenelements (9) definiert ist, die von der Bodenwand (20) auf der dem ersten Ende (7) des wenigstens einen Lichtleiters (3) gegenüberliegenden Seite auskragend hervorsteht.
  8. Beleuchtungsvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Trägerelement (6) für die wenigstens eine Lichtquelle (5), das Schnittstellenelement (9) und das Adapterelement (10) als Platten ausgebildet sind und in überlappenden Positionen übereinanderliegend gekoppelt sind; wobei die wenigstens eine Lichtquelle durch eine LED oder durch eine LED-Anordnung (5) gebildet ist, die durch einen elektrischen Verbinder (26) mit Energie versorgt wird, der in das Trägerelement (6) integriert ist und von diesem auf der dem ersten Ende (7) des Lichtleiters (3) oder des Bündels von Lichtleitern (3) gegenüberliegenden Seite hervorsteht.
  9. Beleuchtungsvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Trägerelement (6) auskragend in Richtung zu dem Lichtleiter (3) oder dem Bündel von Lichtleitern (3) mit einem ringförmigen Kragen (27) versehen ist, der in Kontakt mit einer ringförmigen Seitenwand (23) des Durchgangssitzes (8) des Gehäuses (2) gekoppelt ist, sowie mit einem Flansch (28) auf der dem ringförmigen Kragen (27) gegenüberliegenden Seite, der mittels lösbarer Verbindungsmittel, vorzugsweise Schrauben (30), an einem umlaufenden vorderen Rand (31) des Durchgangssitzes (8) des Gehäuses (2) befestigt ist.
  10. Fahrzeug, das die Beleuchtungsvorrichtung (1) nach einem der vorangehenden Ansprüche aufweist, wobei die Beleuchtungsvorrichtung (1) ein Frontscheinwerfer oder ein Fahrzeugscheinwerfer ist.
EP19208726.0A 2018-11-12 2019-11-12 Beleuchtungsvorrichtung für fahrzeuge mit lichtleitern Active EP3650745B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102018000010248A IT201800010248A1 (it) 2018-11-12 2018-11-12 Dispositivo di illuminazione per veicoli con guide di luce

Publications (2)

Publication Number Publication Date
EP3650745A1 EP3650745A1 (de) 2020-05-13
EP3650745B1 true EP3650745B1 (de) 2021-06-02

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EP19208726.0A Active EP3650745B1 (de) 2018-11-12 2019-11-12 Beleuchtungsvorrichtung für fahrzeuge mit lichtleitern

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IT (1) IT201800010248A1 (de)

Cited By (1)

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FR3134873A1 (fr) * 2022-04-25 2023-10-27 Psa Automobiles Sa Dispositif d’éclairage à guide(s) de lumière coudé(s)

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FR3110956B1 (fr) * 2020-05-27 2024-10-18 Valeo Vision Dispositif d'éclairage automobile

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US6948835B2 (en) * 2003-12-17 2005-09-27 Guide Corporation Adjustable rear lamp
DE102013014760B4 (de) * 2013-09-05 2017-04-27 Audi Ag Fahrzeugleuchte, insbesondere Fahrzeugrückleuchte, mit einstellbarer Befestigung
DE112015002499B4 (de) * 2014-05-26 2021-06-17 Hasco Vision Technology Co., Ltd. Lichtleiteinrichtung für eine Kraftfahrzeugleuchte und Kraftfahrzeugleuchte
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3134873A1 (fr) * 2022-04-25 2023-10-27 Psa Automobiles Sa Dispositif d’éclairage à guide(s) de lumière coudé(s)
WO2023209303A1 (fr) * 2022-04-25 2023-11-02 Psa Automobiles Sa Dispositif d'éclairage à guide(s) de lumière coudé(s)

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IT201800010248A1 (it) 2020-05-12

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