EP4102131A1 - 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
EP4102131A1
EP4102131A1 EP21178455.8A EP21178455A EP4102131A1 EP 4102131 A1 EP4102131 A1 EP 4102131A1 EP 21178455 A EP21178455 A EP 21178455A EP 4102131 A1 EP4102131 A1 EP 4102131A1
Authority
EP
European Patent Office
Prior art keywords
rib
lighting device
adhesive
holding body
fixing recess
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Withdrawn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
EP21178455.8A
Other languages
German (de)
English (en)
Inventor
Hans-Jörg Riegler
Christian Jackl
Alexander Hacker
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 EP21178455.8A priority Critical patent/EP4102131A1/fr
Priority to EP22728412.2A priority patent/EP4352408A1/fr
Priority to CN202280041287.5A priority patent/CN117460914A/zh
Priority to PCT/EP2022/062420 priority patent/WO2022258270A1/fr
Priority to KR1020237041181A priority patent/KR20240004741A/ko
Publication of EP4102131A1 publication Critical patent/EP4102131A1/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Withdrawn legal-status Critical Current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
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/49—Attachment of the cooling means
    • 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]
    • 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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof
    • F21S41/295—Attachment thereof specially adapted to projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings

Definitions

  • the invention relates to a motor vehicle headlight with at least one lighting device according to the invention.
  • the fastening device comprises at least three pairs of fastenings which are arranged around the optical axis in a cross section orthogonal to the main emission direction at the same distance from the optical axis of the projection optics, wherein the engagement element is designed as a rib protruding from the holding body, which extends away from the holding body against the main emission direction along a plane of extent parallel to the main emission direction of the lighting device, and wherein the rib extends in a cross section orthogonally to the main emission direction along a straight line, and wherein the counter-engagement element is designed as a fixing recess which corresponds to the protruding rib, which is arranged on the heat sink and penetrates it along an axis parallel to the main direction of radiation, wherein, in the fastened state of each fastening pair, the rib engages with the fixing recess in such a way that the rib penetrates the corresponding fixing recess in such a way that a spatial volume is formed between the rib and the fixing
  • Such ribs according to the invention improve the application of the adhesive and its adhesion.
  • the volume of space created between the rib and the fixing recess allows a certain amount of play between these components for each pair of attachments, so that when the lighting device is assembled, the heat sink and light sources can be aligned with the projection optics on the holding body before the rib and the fixing recess are mutually connected by the Adhesive to be fixed.
  • the fastening device comprises at least four pairs of fastenings, with two pairs of fastenings being arranged opposite each other in the fastened state in a cross section orthogonal to the main emission direction in such a way that the respective ribs or the planes of extension of the ribs are arranged parallel to one another, so that an imaginary virtual connecting line, which is arranged orthogonally to the respective ribs or the extension planes of the ribs, intersects the optical axis of the projection optics.
  • the adhesive is an adhesive that hardens by UV radiation. It is provided that the geometry of the lighting device or the heat sink is selected such that the adhesive introduced can be irradiated by means of UV light, ie the adhesive points or the adhesive must be accessible for UV irradiation.
  • the direction of the tensile force that occurs when the adhesive hardens is additionally directed along a direction orthogonal to the plane of extension, in order to generate a controllable tensile force in a defined direction.
  • the corresponding spatial volumes for each fastening pair cannot be identical, so that the resulting spatial volume is larger on one side of the plane of extent than on the other side of the plane of extent.
  • the quantity of adhesive for example the quantity of UV adhesive in the spatial volumes, also varies, with the quantity distribution of the adhesive being in the same ratio as the size of the spatial volumes to one another for each fastening pair, i.e. in the smaller spatial volumes there is a smaller one Adhesive amount of the adhesive arranged than in the larger spatial volumes.
  • the spatial volumes which are formed between the rib and the fixing recess on opposite sides of the plane of extent of the rib in the fastened state, in a cross section orthogonal to the corresponding plane of extent in the form of a Wedge are formed with a tapering end in the direction of the main emission direction, so that the adhesive arranged therein is also formed as a wedge.
  • the ribs have a structured surface to increase the surface area for fixing with the adhesive.
  • the object is also achieved by a motor vehicle headlight with at least one lighting device according to the invention.
  • the lighting device includes projection optics 60 with an optical axis A, which projection optics 60 are set up to image the light that can be emitted by the plurality of light sources 20 in the direction of a main emission direction X in front of the lighting device 10 .
  • the lighting device 10 comprises a holding body 70 for holding the projection body 60 and the cooling body 50, with the projection optics 60 being arranged on a first side S1 of the holding body 70 , and with the cooling body 50 together with the control circuit board 30 and the plurality of light sources 20 a second side S2 of the holding body 70 opposite the first side S1 by means of a fastening device.
  • the holding body 70 has a light opening 71 passing through the holding body 70 for the transmission of the light that can be emitted from the light sources 20 , so that light from the light sources 20 can be radiated through the light opening 71 from the second side S2 onto the first side S1 into the projection optics 60 .
  • the fastening device comprises engagement elements 100, which are arranged on the holding body 70 , and corresponding counter-engagement elements 200, which are arranged on the heat sink 50 , which engagement elements 100 in a fastened state P1 of the heat sink 50 on the holding body 70 with the corresponding corresponding counter-engagement element 200 in Are engaged, wherein the attachment means comprises an adhesive 300 for fixing the engaged engaging and counter-engaging elements 100, 200 .
  • the adhesive 300 is an adhesive that cures by UV radiation.
  • a representation of the engaged engaging and counter-engaging elements 100, 200 in the fastened state P1 is shown schematically in FIG 2 shown.
  • One engagement element 100 and one counter-engagement element 200 each form a fastening pair 100a, the fastening device in the example shown comprising four fastening pairs 100a , which in a cross section are orthogonal to the Main emission direction X, which cross-section in 2 is shown, are arranged around the optical axis A at the same distance from the optical axis A of the projection optics 60 .
  • the engagement element is designed as a rib 100 protruding from the holding body 70 , which extends away from the holding body 70 against the main emission direction X along an extension plane E parallel to the main emission direction X of the lighting device 10 , as shown in FIG 2 and 3 can be seen, and wherein the rib 100 extends orthogonally to the main emission direction X along a straight line G in a cross section.
  • the counter-engagement element is designed as a fixing recess 200 that corresponds to the protruding rib 100 , which is arranged on the heat sink 50 and passes through it along an axis X1 , parallel to the main radiation direction X, as in FIG 4 .
  • the fixing recess 200 extends from an entry opening 200a for inserting the rib 100 to an exit opening 200b through which the rib 100 can be passed and the adhesive 300 can be arranged.
  • the rib 100 per fastening pair 100a engages with the fixing recess 200 in such a way that the rib 100 penetrates the corresponding fixing recess 200 in such a way that between the rib 100 and the fixing recess 200 on opposite sides of the extension plane E of the rib 100 is a spatial volume 210 is formed, as in figure 5 is shown.
  • the adhesive 300 for fixing the rib 100 to the fixing recess 200 is arranged in the formed spatial volumes 210a , the adhesive 300 being arranged symmetrically to the extension plane E in the spatial volumes 210 for each fastening pair 100a .
  • the corresponding spatial volumes for each fastening pair cannot be identical, so that the resulting spatial volume is larger on one side of the plane of extent than on the other side of the plane of extent.
  • the quantity of adhesive for example the quantity of UV adhesive in the spatial volumes, also varies, with the quantity distribution of the adhesive being in the same ratio as the size of the spatial volumes to one another for each fastening pair, ie in the smaller spatial volumes there is a smaller one Adhesive amount of the adhesive arranged than in the larger volume of space.
  • the ribs 100 can have a structured surface to increase the surface area for fixing with the adhesive 300 .
  • the spatial volumes 210 per attachment pair 100a which are formed between the rib 100 and the fixing recess 200 on opposite sides of the extension plane E of the rib 100 in the attached state P1 , are in the form of a wedge in a cross section orthogonal to the corresponding extension plane E a tapering end 220 in the direction of the main emission direction X , so that the adhesive 300 arranged therein is also designed as a wedge, as is clearer in FIG 6 is shown.
  • the fixing recess 200 has pull-out edges 230 for each fastening pair 100a , which extend from a lateral surface of the fixing recess 200 into the spatial volumes 210 and delimit the tapering end 220 of the wedge at least in sections, so that the adhesive 300 arranged in the spatial volumes 210 and configured as a wedge against a Extraction in the direction of the main radiation direction X is secured.
  • the fixing recess 200 has an adhesive section 240 in which the adhesive 300 is introduced, and an entry section 250 .
  • the adhesive section 240 extends from the exit opening 200b of the fixing recess 200 to the pull-out edge 230, with the entry section 250 extending from the entry opening 250 to the pull-out edge 230 .
  • two pairs of fastenings 100a are arranged opposite each other in the fastened state P1 in a cross section orthogonal to the main emission direction X in such a way that the respective ribs 100 or the extension plane E of the rib 100 are arranged parallel to one another, so that an imaginary virtual connecting line L leading to the respective Ribs 100 or the extension plane E of the rib 100 is arranged orthogonally, the optical axis A of the projection optics 60 intersects, as in 2 is shown.
  • the imaginary virtual connecting lines L between each pair of fastenings 100a in a cross section orthogonal to the main emission direction X intersect at a 90° angle in the example shown.

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)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP21178455.8A 2021-06-09 2021-06-09 Dispositif d'éclairage pour un phare de véhicule automobile Withdrawn EP4102131A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP21178455.8A EP4102131A1 (fr) 2021-06-09 2021-06-09 Dispositif d'éclairage pour un phare de véhicule automobile
EP22728412.2A EP4352408A1 (fr) 2021-06-09 2022-05-09 Dispositif d'éclairage pour un phare de véhicule automobile
CN202280041287.5A CN117460914A (zh) 2021-06-09 2022-05-09 用于机动车前照灯的照明装置
PCT/EP2022/062420 WO2022258270A1 (fr) 2021-06-09 2022-05-09 Dispositif d'éclairage pour un phare de véhicule automobile
KR1020237041181A KR20240004741A (ko) 2021-06-09 2022-05-09 자동차 헤드라이트용 조명 장치

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21178455.8A EP4102131A1 (fr) 2021-06-09 2021-06-09 Dispositif d'éclairage pour un phare de véhicule automobile

Publications (1)

Publication Number Publication Date
EP4102131A1 true EP4102131A1 (fr) 2022-12-14

Family

ID=76355359

Family Applications (2)

Application Number Title Priority Date Filing Date
EP21178455.8A Withdrawn EP4102131A1 (fr) 2021-06-09 2021-06-09 Dispositif d'éclairage pour un phare de véhicule automobile
EP22728412.2A Pending EP4352408A1 (fr) 2021-06-09 2022-05-09 Dispositif d'éclairage pour un phare de véhicule automobile

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP22728412.2A Pending EP4352408A1 (fr) 2021-06-09 2022-05-09 Dispositif d'éclairage pour un phare de véhicule automobile

Country Status (4)

Country Link
EP (2) EP4102131A1 (fr)
KR (1) KR20240004741A (fr)
CN (1) CN117460914A (fr)
WO (1) WO2022258270A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2450622A2 (fr) * 2010-11-08 2012-05-09 Valeo Vision Dispositif d'éclairage et/ou de signalisation de véhicule automobile
US20160146423A1 (en) * 2014-11-26 2016-05-26 Coretronic Corporation Vehicle lighting device
FR3049682A1 (fr) * 2016-03-31 2017-10-06 Valeo Vision Module emetteur de lumiere

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2450622A2 (fr) * 2010-11-08 2012-05-09 Valeo Vision Dispositif d'éclairage et/ou de signalisation de véhicule automobile
US20160146423A1 (en) * 2014-11-26 2016-05-26 Coretronic Corporation Vehicle lighting device
FR3049682A1 (fr) * 2016-03-31 2017-10-06 Valeo Vision Module emetteur de lumiere

Also Published As

Publication number Publication date
KR20240004741A (ko) 2024-01-11
EP4352408A1 (fr) 2024-04-17
CN117460914A (zh) 2024-01-26
WO2022258270A1 (fr) 2022-12-15

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