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EP3803195A1 - Dispositif d'éclairage pour projecteur de véhicule automobile - Google Patents

Dispositif d'éclairage pour projecteur de véhicule automobile

Info

Publication number
EP3803195A1
EP3803195A1 EP19723421.4A EP19723421A EP3803195A1 EP 3803195 A1 EP3803195 A1 EP 3803195A1 EP 19723421 A EP19723421 A EP 19723421A EP 3803195 A1 EP3803195 A1 EP 3803195A1
Authority
EP
European Patent Office
Prior art keywords
light
lighting device
holder
light guide
primary optics
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.)
Granted
Application number
EP19723421.4A
Other languages
German (de)
English (en)
Other versions
EP3803195B1 (fr
Inventor
Lukas Taudt
Nina Brauner
Mathias SCHRAGL
Christoph Längauer
Johann Höfler
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.)
ZKW Group GmbH
Original Assignee
ZKW Group GmbH
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 ZKW Group GmbH filed Critical ZKW Group GmbH
Publication of EP3803195A1 publication Critical patent/EP3803195A1/fr
Application granted granted Critical
Publication of EP3803195B1 publication Critical patent/EP3803195B1/fr
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
    • F21S41/60—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
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching 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
    • 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]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources

Definitions

  • the invention relates to a lighting device for a motor vehicle headlight, the lighting device comprising:
  • Main emission of the light sources are arranged and one each
  • Light entrance surface in which the light beams of the light sources can be fed
  • a common light exit surface wherein the light guide open into the common light exit surface
  • a holder which is adapted to hold the light entry surfaces of the light guide with respect to the light sources in position.
  • the invention also relates to a light module having at least one lighting device according to the invention.
  • the invention further relates to a motor vehicle headlight with at least one illumination device according to the invention or with at least one light module having at least one illumination device according to the invention.
  • lighting devices mentioned above are used in conjunction with light modules or motor vehicle headlights to generate light distributions.
  • primary glass optics are usually used, with which simple geometries for primary optics can be realized. If, on the other hand, more complex geometries are required for primary optics, the use of glass is often unsuitable for this purpose.
  • Positioning their light entry surface or their light entry surfaces with respect to a light source or sources of light has a stable shape as possible.
  • an offset of the light exit surfaces of the attachment optics can lead to the fact that the imaged photograph does not meet the desired requirements.
  • the holder for fixing the primary optics has at least one latching element, wherein the latching element is arranged in a detent element associated, provided on the primary optics counter-latching element
  • the lighting device is a "pixel light device", the light sources being arranged in rows and columns.
  • the light sources can be controlled independently of each other, whereby different light distributions can be generated, in particular an adaptive high beam light distribution.
  • the at least one latching element has a latching nose or is formed as an undercut. It can also be provided that the counter-latching element a locking lug or as
  • the at least one latching element has a latching nose and the counter-latching element is designed as an undercut.
  • undercuts along the longitudinal axis of the primary optics may be arranged.
  • locking elements are arranged on the holder.
  • At least two locking elements may be provided, each with associated undercut.
  • undercuts or corresponding latching elements are arranged above or below the light exit surface or the light sources, wherein
  • main emission direction is understood to mean the direction in which the light sources radiate the strongest or most of the light as a result of their directivity.
  • the latching element is designed as an undercut and the counter-latching element has a latching lug.
  • the at least one latching element is produced in one piece with the holder.
  • the holder is made of a thermoplastic.
  • Thermoplastics are better or easier to form compared to thermosets. It is particularly advantageous if the holder is made of a scattered light shading material, ie an opaque material, for example made of black plastic, in particular - for example, black - thermoplastic, so that stray light is particularly sealed off from adjacent light sources.
  • a scattered light shading material ie an opaque material, for example made of black plastic, in particular - for example, black - thermoplastic
  • a further, alternative or preferably additional measure for avoiding light losses into the position holder is that the position holder is designed such that the contact surface of a light guide body (or the light guide body) with the
  • Position holder is as low as possible.
  • the light guide contacted the position holder thus only in a narrow
  • the primary optics can be made in one piece from a transparent, photoconductive and moldable plastic.
  • one-piece is meant a production of primary optics in one piece, preferably by means of an injection molding process.
  • the primary optics with all their “components”, for example the light exit surface, the light guide body, the counter-latching elements and other “components” arranged on the primary optics, have been produced integrally or in one piece in one production process.
  • the primary optic may be made of a silicone material.
  • the primary optics is made of a poly (organo) siloxane.
  • the holder has a receiving portion with at least one opening in which the light guide can be accommodated and positioned.
  • the individual light guide can be held in position with respect to the light sources, if the holder for each light guide has an opening in which the associated light guide is accurately recorded and positioned.
  • the openings are holes or receptacles in the holder, with a precisely adapted cross section for the respective light guide; these will be in the
  • the holder has openings corresponding to the number of light guide bodies, which are each associated with a light guide body.
  • the holder may be favorable if the holder receives the light guide body at its end regions facing the light entry surfaces.
  • the light guide can thereby protrude slightly backwards from the recording or flush with the holder.
  • the holder has at least one projecting in the main emission positioning wall, which is adapted to engage in a recess provided on the primary optics.
  • wall is meant basically not only a projection in a plane. This term may also mean an association of several, planar walls, which are arranged for example at right angles to each other and / or form a kind of open square, ie together a U Form form.
  • the positioning walls have the same or different heights, in particular, also gradual height differences are possible.
  • the at least one positioning wall generally ensures further stability of the primary optics in the assembled state of the lighting device, so that oscillation transverse to the main emission direction of the light sources can be largely avoided.
  • At least one positioning wall is arranged in the main emission direction laterally of the receiving section of the holder.
  • At least one projection is arranged on the at least one positioning wall, which extends oblong in the direction of the main radiation and is adapted to engage positively in the primary optics associated with the at least one projection guide groove.
  • the at least one projection causes additional stability in the attached state of the primary optics on the holder.
  • a material is inserted in the openings between the holder and the light-guiding bodies, which material has a lower refractive index than the material of the light-guiding body.
  • the material with a lower refractive index surrounds the light-conducting bodies in such a way that it does not touch the position holder.
  • the limit angle for total reflection is increased, so that no or only small amounts of light leak out of the light guide.
  • the light guide can be formed elongated, with a greater extent in the main emission of the light rays as transverse to it.
  • the light guide bodies have a cross section that tapers towards their light entry surfaces.
  • the holder can be pushed only up to a certain point on the light-conducting bodies.
  • the light guide bodies are frustoconical or trap-shaped.
  • all multi-sided truncated pyramids are suitable, e.g. Hexagonal, approximately in the form of wedge-shaped honeycombs.
  • the base shape is closely related to the LED chip arrangements and the desired light entry and exit.
  • the light sources each comprise one or more light-emitting diodes.
  • each light source in each case one or more
  • each light source can be controlled separately and switched on and off accordingly, preferably also dimmable. If a light source consists of a plurality of light-emitting diodes, it can also be advantageous if each of the light-emitting diodes can be activated separately.
  • the object is achieved by a light module having at least one illumination device according to the invention.
  • the object is achieved with a motor vehicle headlight having at least one illumination device according to the invention or a light module having at least one illumination device according to the invention.
  • Low beam and / or a high beam are generated, including, for example, the left
  • Headlamp and the right headlamp each one according to the invention
  • Lighting device comprises, with which each of the left and the right part of the light distribution are generated.
  • a secondary optics usually a lens provided by means of which the respective light distribution can be generated.
  • the lighting device according to the invention can also be used for a reversing light.
  • the invention will be explained in more detail with reference to exemplary drawings. This shows
  • FIG. 1 shows an exemplary lighting device in an exploded view with a holder and a primary optics, wherein the holder has two locking elements for fixing the primary optics
  • FIG. 2 shows the lighting device of FIG. 1 in a rear view
  • Fig. 3a shows the illumination device of Fig. 3 through the section C-C
  • FIG. 4 shows an exemplary spruce module with a lighting device in one
  • FIG. 1 shows an exemplary lighting apparatus having a plurality of spruce sources 10 configured to emit spruce beams in a main radiation direction
  • Main emission of the spruce sources 10 are arranged and one each
  • a holder 200 includes, which holder 200 is arranged to hold the Fichteinlingers vom 120 of the Fichtleitève 110 with respect to the Fichtánn 10 in position. Furthermore, the result
  • the spruce sources 10 each comprise one or more wet diodes, wherein each spruce source preferably comprises one or more wet diodes each.
  • each spruce source is separately controllable and correspondingly switched on and off, preferably also dimmable. If a spruce source consists of several wet diodes, it can also be advantageous if each of the wet diodes can be activated separately.
  • main radiation direction is generally understood to mean the direction in which the spruce sources 10 emit most or most of the spruce as a result of their directivity. In the figures shown, the main emission direction corresponds to the x-direction of the coordinate system drawn in each case in the figures.
  • the holder 200 for attachment of the primary optics 100 has two locking elements 210 formed with a latching nose 220, wherein the latching lugs are arranged to engage the latching lugs in each case to an ordered undercut 140, which undercut 140 is arranged on the primary optics 100, however, in FIG 1 can not be seen because of the view.
  • Locking elements 210 made in one piece with the holder 200.
  • the primary optic 100 is made of a transparent, photoconductive and moldable plastic, preferably of a silicone material or a poly (organo) siloxane.
  • the holder 200 has a receiving section 230 with openings 231 corresponding to the number of light guide bodies, which openings 231 are each associated with a light guide body 110 and in which the light guide bodies 110 the primary optics 100 can be received and positioned, wherein the holder 200 receives the light guide 110 at their the light inlet surfaces 120 facing end portion.
  • the holder 200 has two positioning walls 240 that protrude in the main emission direction or x-direction and that are set up to engage in a depression provided on the primary optics 100.
  • a "positioning wall” is to be understood as meaning not only a projection in a plane, but also an association of a plurality of planar walls which are connected to one another, preferably at their respective lateral end edges, as in the exemplary lighting device
  • the individual walls are at right angles to each other and form one Type open cart or a U-shape, wherein the connecting edge areas can be rounded.
  • the individual walls of a positioning wall 240 do not have the same height, wherein gradual height differences or courses can be seen in FIG. 1.
  • the positioning walls 240 generally provide further stability of the primary optics 100 in the assembled state of the illumination device, such that swinging transversely to the main emission direction or oscillation in the y direction
  • projections 241 may be arranged on the positioning walls 240, which projections 241 extend oblong in the direction of the main emission direction or x-direction and are adapted to engage in a form-locking manner in a guide groove in the primary optics 100 assigned to the projections 241 in each case.
  • Such protrusions 241 provide additional stability in a fixed state of the primary optic 100 to the holder 200.
  • the positioning walls 240 are each arranged laterally or along the y-axis of the receiving portion 230, wherein the open sides of the
  • Positioning walls 240 are aligned with each other and partially limit the receiving portion 230 or demarcate.
  • Fig. 2 shows a rear view of the lighting device of Fig. 1, wherein in Fig. 2 it can be seen that the light guide 110 are formed in the illustrated lighting device elongated, with a greater extent in the main emission of the
  • the light guide bodies 110 have a cross section which tapers towards their light entry surfaces 120.
  • Fig. 3 shows the assembled state of the lighting device from the previous figures, wherein Fig. 3a is a cross-sectional view along the section CC represents. It can be seen here that the individual light guide bodies 110 are received and positioned accurately in the openings 231.
  • the openings 231 are holes or receptacles in the holder, with a precisely adapted cross section for the respective light guide body 110; these are inserted into the associated openings 231 and can protrude slightly backwards out of the openings 231, as can be seen in Fig. 3a, or flush with the holder 200 and with the openings 231 complete.
  • the light module additionally has a printed circuit board 11 on which the light sources 10 are arranged, a heat sink 500 which is set up to dissipate the heat produced during operation of the light sources, a secondary optics 300 and a housing 400 which is provided for receiving the remaining components comprises, wherein the
  • Lighting device to form outgoing light rays to obtain a desired light distribution, such as a low beam and / or a
  • the printed circuit board 11 having light sources 10 is held between the heat sink 500 and the holder 200, wherein pins arranged on the heat sink pass through the printed circuit boards through openings provided for this purpose.

Landscapes

  • 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)
  • Planar Illumination Modules (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

L'invention concerne un dispositif d'éclairage pour un projecteur de véhicule automobile, lequel dispositif d'éclairage comprend les éléments suivants : - une pluralité de sources lumineuses (10) agencées pour émettre des faisceaux lumineux dans une direction de rayonnement principale, un système optique primaire (100) comportant une pluralité de corps de guidage de lumière (110), lesquels corps de guidage de lumière (110) sont disposés dans la direction de rayonnement principale des sources lumineuses (10) et présentent chacun une surface d'entrée de lumière (120), dans laquelle les faisceaux lumineux des sources lumineuses peuvent être introduits, et une surface de sortie de lumière (130), les corps de guidage de lumière (110) ouvrant dans une surface de sortie de lumière commune (130), et - un support (200) qui est agencé pour maintenir les surfaces d'entrée de lumière (120) des corps de guidage de lumière (110) en position par rapport aux sources lumineuses (10), le support (200) comportant, pour fixer l'optique primaire (100), au moins un élément de verrouillage (210) formé avec un ergot d'encliquetage (220), l'ergot d'encliquetage (220) étant disposée pour venir en prise dans une contre-dépouille (140) qui est associée à l'ergot d'encliquetage (220) et prévue sur l'optique primaire (100).
EP19723421.4A 2018-06-04 2019-05-14 Dispositif d'éclairage pour un phare de véhicule automobile Active EP3803195B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18175740.2A EP3578874A1 (fr) 2018-06-04 2018-06-04 Dispositif d'éclairage pour un phare de véhicule automobile
PCT/EP2019/062307 WO2019233713A1 (fr) 2018-06-04 2019-05-14 Dispositif d'éclairage pour projecteur de véhicule automobile

Publications (2)

Publication Number Publication Date
EP3803195A1 true EP3803195A1 (fr) 2021-04-14
EP3803195B1 EP3803195B1 (fr) 2023-07-19

Family

ID=62528325

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18175740.2A Withdrawn EP3578874A1 (fr) 2018-06-04 2018-06-04 Dispositif d'éclairage pour un phare de véhicule automobile
EP19723421.4A Active EP3803195B1 (fr) 2018-06-04 2019-05-14 Dispositif d'éclairage pour un phare de véhicule automobile

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP18175740.2A Withdrawn EP3578874A1 (fr) 2018-06-04 2018-06-04 Dispositif d'éclairage pour un phare de véhicule automobile

Country Status (6)

Country Link
US (1) US11415289B2 (fr)
EP (2) EP3578874A1 (fr)
JP (1) JP7146956B2 (fr)
KR (1) KR102481253B1 (fr)
CN (1) CN112166283B (fr)
WO (1) WO2019233713A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4001073A1 (fr) 2020-11-17 2022-05-25 ZKW Group GmbH Dispositif optique pour optique de phare de motocyclette
KR102607316B1 (ko) * 2021-03-31 2023-11-29 에스엘 주식회사 차량용 램프
EP4303482B1 (fr) 2022-07-07 2025-05-14 ZKW Group GmbH Dispositif d'éclairage pour phare de véhicule automobile pourvu d'unités d'éclairage adjacentes
EP4428434A1 (fr) 2023-03-08 2024-09-11 ZKW Group GmbH Dispositif de signalisation pour un véhicule
EP4506616A1 (fr) 2023-08-09 2025-02-12 ZKW Group GmbH Dispositif d'éclairage pour un phare de véhicule automobile et phare de véhicule automobile

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US7717597B2 (en) * 2007-04-16 2010-05-18 Magna International Inc. Semiconductor light engine using polymer light pipes and lighting systems constructed with the light engine
US20090016074A1 (en) * 2007-07-09 2009-01-15 Magna International Inc. Semiconductor light engine using glass light pipes
AT511761B1 (de) * 2011-08-08 2014-02-15 Zizala Lichtsysteme Gmbh Led-lichtquellenmodul für einen fahrzeugscheinwerfer sowie fahrzeugscheinwerfer und fahrzeugscheinwerfersystem
AT512865B1 (de) 2012-05-09 2014-12-15 Zizala Lichtsysteme Gmbh Beleuchtungseinrichtung für einen Kraftfahrzeugscheinwerfer sowie Lichtmodul und Kraftfahrzeugscheinwerfer mit Beleuchtungseinrichtung
AT513206B1 (de) * 2012-07-18 2015-04-15 Zizala Lichtsysteme Gmbh Leuchteinheit für einen Scheinwerfer
AT513738B1 (de) * 2012-12-20 2014-07-15 Zizala Lichtsysteme Gmbh Leuchteinheit für einen Scheinwerfer
AT513816B1 (de) 2012-12-20 2015-11-15 Zizala Lichtsysteme Gmbh Lichtführungseinheit für eine Leuchteinheit eines Scheinwerfers sowie Leuchteinheit und Schweinwerfer
AT513915B1 (de) * 2013-02-14 2015-11-15 Zizala Lichtsysteme Gmbh Lichtmodul sowie Beleuchtungsvorrichtung mit Lichtmodul für einen Fahrzeugscheinwerfer
AT515012B1 (de) * 2013-10-28 2015-08-15 Zizala Lichtsysteme Gmbh Beleuchtungsvorrichtung für einen Kraftfahrzeugscheinwerfer
DE102013225949A1 (de) * 2013-12-13 2015-06-18 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugscheinwerfer
DE102014203335A1 (de) * 2014-02-25 2015-08-27 Automotive Lighting Reutlingen Gmbh Lichtmodul eines Kraftfahrzeugscheinwerfers und Scheinwerfer mit einem solchen Lichtmodul
AT516170B1 (de) 2014-09-16 2016-03-15 Zizala Lichtsysteme Gmbh Beleuchtungsvorrichtung mit darin verriegelbarer lichtleiteranordnung
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Also Published As

Publication number Publication date
JP7146956B2 (ja) 2022-10-04
JP2021525447A (ja) 2021-09-24
WO2019233713A1 (fr) 2019-12-12
EP3578874A1 (fr) 2019-12-11
CN112166283B (zh) 2023-08-04
US20210231283A1 (en) 2021-07-29
KR102481253B1 (ko) 2022-12-27
CN112166283A (zh) 2021-01-01
KR20210006953A (ko) 2021-01-19
EP3803195B1 (fr) 2023-07-19
US11415289B2 (en) 2022-08-16

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