EP3578874A1 - Dispositif d'éclairage pour un phare de véhicule automobile - Google Patents

Dispositif d'éclairage pour un phare de véhicule automobile Download PDF

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Publication number
EP3578874A1
EP3578874A1 EP18175740.2A EP18175740A EP3578874A1 EP 3578874 A1 EP3578874 A1 EP 3578874A1 EP 18175740 A EP18175740 A EP 18175740A EP 3578874 A1 EP3578874 A1 EP 3578874A1
Authority
EP
European Patent Office
Prior art keywords
light
lighting device
holder
primary optics
light guide
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.)
Withdrawn
Application number
EP18175740.2A
Other languages
German (de)
English (en)
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
Priority to EP18175740.2A priority Critical patent/EP3578874A1/fr
Priority to PCT/EP2019/062307 priority patent/WO2019233713A1/fr
Priority to US15/734,528 priority patent/US11415289B2/en
Priority to CN201980037207.7A priority patent/CN112166283B/zh
Priority to KR1020207035107A priority patent/KR102481253B1/ko
Priority to JP2020567574A priority patent/JP7146956B2/ja
Priority to EP19723421.4A priority patent/EP3803195B1/fr
Publication of EP3578874A1 publication Critical patent/EP3578874A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • 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 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.
  • 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 attaching the primary optics has at least one latching element, wherein the latching element is arranged to engage 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.
  • the counter-locking element is a detent or formed as an undercut.
  • 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 “above” / “below” relate to the already mentioned longitudinal axis of the primary optics transversely to the main emission direction of the light sources in the assembled state of the illumination device.
  • 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.
  • the holder of a stray light shading material ie an opaque material, e.g. is made of black plastic, in particular - for example, black - thermoplastic, so that scattered light is shielded in particular from adjacent light sources.
  • 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 body thus contacts the position holder only in a narrow contact area, for example in a line running around the respective light guide.
  • 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 are inserted into the associated openings and held by the holder in the desired position.
  • 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 basically not just a projection in a plane to understand. This term may also mean an association of a plurality of planar walls, which are arranged, for example, at right angles to one another and / or form a kind of open square, ie together form a U-shape.
  • 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 is elongated in the direction of the main emission extends and is arranged to engage in a form associated with the at least one projection associated guide groove in the primary optics.
  • 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 By thus increasing in Hauptabstrahlutter cross sections of the light guide, the holder can be pushed only up to a certain point on the light-guiding 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 comprises one or more light-emitting diodes.
  • 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.
  • a dipped beam and / or a high beam can be generated, for example, the left headlight and the right headlight each comprising a lighting device according to the invention, with 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.
  • Fig. 1 illustrates an exemplary lighting apparatus, which plurality of light sources 10 which are arranged to emit light beams in a main radiation direction, a primary optics 100 are arranged with a plurality of light guide bodies 110 which light guide body 110 in the main emission direction of the light sources 10 and each having a light entry surface 120 as well as a light exit surface 130, and a holder 200 , which holder 200 is set up to hold the light entry surfaces 120 of the light guide bodies 110 in relation to the light sources 10 in position. Furthermore, the light guide bodies 110 open into a common light exit surface 130.
  • the light sources 10 each comprise one or more light emitting diodes, wherein each light source preferably comprises one or more light emitting diodes.
  • 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.
  • main emission direction is generally understood to mean the direction in which light sources 10 emit most or most of the light 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 mount for the primary optics 100 two with a detent 220 formed latching elements 210, wherein the detents are adapted to engage one of the locking lugs respectively associated undercut 140 which undercut is disposed at the primary optics 100 140, but in Fig. 1 due to the view is not visible.
  • the locking elements 210 are 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 includes a receiving portion 230 corresponding to the number of the light-conducting body provided openings 231 which which openings 231 are associated with one light guide body 110 and in which the light guide body 110 of the primary optical system 100 can be received and positioned, the holder 200, the Optical fiber 110 receives at its 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 .
  • positioning wall is basically not just a projection in a plane to understand.
  • this term may also be meant an association of a plurality of planar walls joined together, preferably at their respective lateral end edges, as shown in the example lighting device in the figures.
  • the individual walls are perpendicular to each other and form a kind of open cart or a U-shape, wherein the connecting edge regions can be rounded.
  • a positioning wall 240 do not have the same height, wherein gradual height differences or courses in Fig. 1 you can see.
  • the positioning walls 240 generally provide further stability of the primary optics 100 in the assembled state of the illumination device, so that swinging transversely to the main emission direction or oscillation in the y direction can be largely avoided.
  • 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 arranged 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 delimit the receiving portion 230 .
  • Fig. 2 shows a rear view of the lighting device Fig. 1 , where in Fig. 2 It can be seen that the light guide bodies 110 are elongated in the illumination device shown, with a greater extent in the main emission direction of the light beams or the x-axis than transversely thereto. In addition, the light guide bodies 110 have a cross section which tapers towards their light entry surfaces 120 . As a result of the cross-sections of the light-conducting bodies 110 which thus increase in the main emission direction or x-direction, the holder 200 can only be pushed onto the light-conducting bodies 110 up to a certain point.
  • Fig. 3 shows the assembled state of the lighting device from the previous figures, wherein Fig. 3a 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 in Fig. 3a can be seen, or flush with the holder 200 or with the openings 231 complete.
  • Fig. 4 shows an exemplary light module with a lighting device from the previous figures, wherein the light module additionally a circuit board 11, on which the light sources 10 are arranged, a heat sink 500, which is adapted to dissipate the heat generated during operation of the light sources, a secondary optics 300 and Housing 400, which is intended to receive the remaining components, comprises, wherein the secondary optics is adapted to form the emanating from the light exit surface 130 of the lighting device light beams to obtain a desired light distribution, such as a low beam and / or a high beam distribution, still other or further light distributions are possible.
  • a desired light distribution such as a low beam and / or a high beam distribution, still other or further light distributions are possible.
  • 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)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Planar Illumination Modules (AREA)
EP18175740.2A 2018-06-04 2018-06-04 Dispositif d'éclairage pour un phare de véhicule automobile Withdrawn EP3578874A1 (fr)

Priority Applications (7)

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
US15/734,528 US11415289B2 (en) 2018-06-04 2019-05-14 Illumination device for a motor vehicle headlight
CN201980037207.7A CN112166283B (zh) 2018-06-04 2019-05-14 用于机动车前大灯的照明装置
KR1020207035107A KR102481253B1 (ko) 2018-06-04 2019-05-14 자동차 헤드램프용 조명 장치
JP2020567574A JP7146956B2 (ja) 2018-06-04 2019-05-14 自動車投光装置用照明装置
EP19723421.4A EP3803195B1 (fr) 2018-06-04 2019-05-14 Dispositif d'éclairage pour un phare de véhicule automobile

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
EP3578874A1 true EP3578874A1 (fr) 2019-12-11

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 After (1)

Application Number Title Priority Date Filing Date
EP19723421.4A Active EP3803195B1 (fr) 2018-06-04 2019-05-14 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)

Cited By (2)

* 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
EP4303482A1 (fr) * 2022-07-07 2024-01-10 ZKW Group GmbH Dispositif d'éclairage pour phare de véhicule automobile pourvu d'unités d'éclairage adjacentes

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102607316B1 (ko) * 2021-03-31 2023-11-29 에스엘 주식회사 차량용 램프

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WO2013166535A2 (fr) * 2012-05-09 2013-11-14 Zizala Lichtsysteme Gmbh Dispositif d'éclairage pour projecteur de véhicule à moteur
WO2014012128A1 (fr) * 2012-07-18 2014-01-23 Zizala Lichtsysteme Gmbh Unité luminescente pour un projecteur
WO2014124477A1 (fr) * 2013-02-14 2014-08-21 Zizala Lichtsysteme Gmbh Module lumineux pour un projecteur de véhicule
WO2015061822A1 (fr) * 2013-10-28 2015-05-07 Zizala Lichtsysteme Gmbh Dispositif d'éclairage pour phare de véhicule automobile
EP3339720A1 (fr) * 2016-12-19 2018-06-27 Automotive Lighting Reutlingen GmbH Ensemble d'optique primaire destiné à être utilisé dans un dispositif d'éclairage du véhicule automobile et dispositif d'éclairage du véhicule automobile doté d'un tel ensemble d'optique primaire

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WO2013166535A2 (fr) * 2012-05-09 2013-11-14 Zizala Lichtsysteme Gmbh Dispositif d'éclairage pour projecteur de véhicule à moteur
WO2014012128A1 (fr) * 2012-07-18 2014-01-23 Zizala Lichtsysteme Gmbh Unité luminescente pour un projecteur
WO2014124477A1 (fr) * 2013-02-14 2014-08-21 Zizala Lichtsysteme Gmbh Module lumineux pour un projecteur de véhicule
WO2015061822A1 (fr) * 2013-10-28 2015-05-07 Zizala Lichtsysteme Gmbh Dispositif d'éclairage pour phare de véhicule automobile
EP3339720A1 (fr) * 2016-12-19 2018-06-27 Automotive Lighting Reutlingen GmbH Ensemble d'optique primaire destiné à être utilisé dans un dispositif d'éclairage du véhicule automobile et dispositif d'éclairage du véhicule automobile doté d'un tel ensemble d'optique primaire

Cited By (3)

* 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
WO2022106179A1 (fr) * 2020-11-17 2022-05-27 Zkw Group Gmbh Dispositif optique pour optique de phare de motocyclette
EP4303482A1 (fr) * 2022-07-07 2024-01-10 ZKW Group GmbH Dispositif d'éclairage pour phare de véhicule automobile pourvu d'unités d'éclairage adjacentes

Also Published As

Publication number Publication date
EP3803195A1 (fr) 2021-04-14
US20210231283A1 (en) 2021-07-29
CN112166283A (zh) 2021-01-01
JP2021525447A (ja) 2021-09-24
WO2019233713A1 (fr) 2019-12-12
KR102481253B1 (ko) 2022-12-27
EP3803195B1 (fr) 2023-07-19
JP7146956B2 (ja) 2022-10-04
US11415289B2 (en) 2022-08-16
CN112166283B (zh) 2023-08-04
KR20210006953A (ko) 2021-01-19

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