WO2019011797A1 - Dispositif d'éclairage pour véhicules - Google Patents

Dispositif d'éclairage pour véhicules Download PDF

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Publication number
WO2019011797A1
WO2019011797A1 PCT/EP2018/068352 EP2018068352W WO2019011797A1 WO 2019011797 A1 WO2019011797 A1 WO 2019011797A1 EP 2018068352 W EP2018068352 W EP 2018068352W WO 2019011797 A1 WO2019011797 A1 WO 2019011797A1
Authority
WO
WIPO (PCT)
Prior art keywords
light guide
lighting device
electronic component
section
extension
Prior art date
Application number
PCT/EP2018/068352
Other languages
German (de)
English (en)
Inventor
Slava Mitlewski
Heinrich Schäfer
Janis Schäfer
Original Assignee
HELLA GmbH & Co. KGaA
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 HELLA GmbH & Co. KGaA filed Critical HELLA GmbH & Co. KGaA
Publication of WO2019011797A1 publication Critical patent/WO2019011797A1/fr

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
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/10—Protection of lighting devices
    • 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]

Definitions

  • the invention relates to a lighting device for vehicles with a light source, with a light guide associated with the light source for generating a predetermined light distribution and with shielding means for shielding electromagnetic interference generated by an electronic component.
  • a lighting device for vehicles which has a light source and the same associated light guide means for generating a predetermined light distribution, such as low beam distribution.
  • the light source is designed as a gas discharge lamp, which is associated with a ballast with a number of electronic components. For shielding electromagnetic interference of these electronic components, the ballast is enclosed in a metallic housing.
  • a control circuit is also provided with electronic components, from which an electromagnetic interference emanates.
  • electronic components from which an electromagnetic interference emanates.
  • DE 20 2004 003 793 U1 and DE 10 2013 1 1 1 518 A1 it is known from DE 20 2004 003 793 U1 and DE 10 2013 1 1 1 518 A1, to arrange the electronic components within a heat sink, so that the metallic heat sink serve as a shield can.
  • Object of the present invention is therefore to develop a lighting device for vehicles such that the cost of shielding electromagnetic interference is reduced cost.
  • the invention in conjunction with the preamble of claim 1, characterized in that the light guide means has an extension portion which surrounds the electronic component at least partially and is designed in such a way that the electromagnetic interference radiation emitted by the electronic component is shielded.
  • the light guide means has an extension section which at least partially surrounds an electronic component and is designed such that it shields the electromagnetic interference radiation emitted by the electrical component On the one hand, it serves to guide the light emitted by the light source so that a predetermined light distribution, for example low-beam distribution, is generated On the other hand, it serves to shield the electromagnetic interference radiation of the at least one electrical component, which is preferably used to control the light source serves.
  • the extension portion is integrally connected to a light guide portion of the light guide means. Cost-effective can thus be effected with the production of a single component on the one hand, the light guide and on the other hand, the shielding of electromagnetic interference.
  • both the extension section and the light-guiding section of the light-guiding means have the same electrically non-conductive base material. If at least the extension section additionally has a metal material extending over its areal extent, the shielding effect can be achieved in a material-saving manner. If both the extension section and the light guide section have a metallization, this can simplify the manufacturing effort since the light guide means basically has the same layer structure or material composition.
  • the metallization of the extension section and / or the light guide section can be effected by a metal coating or by integration of electrically conductive particles.
  • the metal coating may be arranged on a first and / or second side of the base material neck.
  • this can provide a particularly effective metallization.
  • the extension section together with a circuit carrier for the at least one electrical component forms a common enclosure, wherein the extension section are arranged to extend on a first side and the circuit carrier extend on a second side of the enclosure.
  • the extension section and the circuit carrier each form a flat side of this enclosure, wherein narrow sides of this enclosure may optionally remain free.
  • the material cost for the extension section can thereby be reduced, since approximately half of the cover is contributed by the circuit carrier.
  • the extension portion may be formed trough-shaped or spoon-shaped.
  • the at least one electronic component is arranged on an extension section facing the upper side of the circuit carrier.
  • a contact surface is provided, which is touched by a stop of the extension portion to form a contacting line enclosing the at least one electronic component.
  • the electronic component is thus completely surrounded or enclosed in the manner of a Faraday cage by shielding means, wherein the extension portion of the light guiding means and the circuit carrier serves as the shielding means.
  • the circuit carrier preferably has a metallizing material.
  • the light-guiding section of the light-guiding means is designed as a reflector.
  • this provides a light guiding means which can be produced with a single-acting tool. Subsequently, only a mirrored surface on the light guide are applied portion of the light guide means for forming the reflector.
  • the light guide means has a transition region between the light guide section and the extension section, in which it is positively and / or non-positively or cohesively connected to the circuit carrier.
  • a further attachment to the edge of the circuit substrate so that a long-term stable connection between the light guide means and the circuit carrier is given.
  • the circuit carrier is designed as a printed circuit board, on which the light source and an electrical component having drive circuit are arranged.
  • One and the same circuit board can thus be used for all electronic components.
  • the printed circuit board is rigid.
  • the printed circuit board on the required stability for the formation of Ableumhüllung and the desired relative position between the light source and the reflector.
  • the extension section and the light guide section are formed by a sheet metal part or casting. If necessary, the light guide section may additionally have a reflective surface coating if it is to be used as a reflector.
  • a light guide and a shield can be brought about in a simple manner.
  • FIG. 1 shows a section through a lighting device according to the invention.
  • a lighting device for vehicles is preferably arranged in a bow or aft region of the vehicle for generating a light distribution. If the lighting device is located in the bow region of the vehicle, it can serve as a headlight for producing a low beam distribution and / or high beam distribution or the like.
  • the lighting device has a pot-shaped housing whose opening is covered by a light-transparent cover.
  • the lighting device has a light source 1 and a light guide section 2 in the form of a reflector for deflecting the light emitted by the light source 1 in accordance with the predetermined light distribution.
  • the light source 1 is designed as a semiconductor-based light source, namely as an LED light source.
  • the light source 1 may be formed, for example, as a light source chip, which is arranged on a circuit carrier 3 designed as a support plate 3.
  • an extension portion 4 of the light guide means connects.
  • the extension portion 4 is hood-shaped and / or spoon-shaped and covers a composite of a plurality of electronic components 5 electronic drive circuit 6.
  • the electronic drive circuit 6 is arranged on the same support plate 3 as the light source. 1
  • the carrier plate 3 consists of an electrically insulating carrier material (epoxy resin with glass fiber fabric) on which at least one copper layer is applied.
  • the extension section 4 and the circuit carrier 3 form a cladding for the electronic components 5, wherein the extension section 4 are arranged on a first side and the circuit carrier 3 on a second side of the enclosure.
  • the extension section 4 is preferably integrally connected to the light guide section 2.
  • the light guide section 2 and the extension section 4 have the same base material.
  • the light guide section 2 and the extension section 4 have a same metallization for shielding purposes.
  • the light guide section 2 and the extension section 4 have on a side facing the circuit carrier 3 a metal coating 7 which is applied to a base material 20 of the light guide section 2 or extension section 4 produced by injection molding from a plastic material.
  • the metal coating 7 extends continuously over the entire planar extent of the light guide section or extension section 4.
  • the metal coating 7 may also be provided only in the region of the extension section 4.
  • the light guide section 2 has on a side facing the light source 1 a mirror coating 21, by means of which the light emitted by the light source 1 is deflected in the main emission direction H of the illumination device.
  • the metal coating 7 may alternatively or additionally be arranged on a side of the light guide section 2 facing away from the circuit carrier 3 and / or of the extension section 4.
  • the base material 20 of the light guide section 2 and / or the extension section 4 may be interspersed with electrically conductive particles instead of the metal coating.
  • the light source 1 and the electronic drive circuit 6 are arranged on an upper side 8 of the circuit carrier 3 facing the light guide section 2 or extension section 4.
  • the circuit carrier 3 has a contact surface 9 or contact rail made of a metal material in a peripheral edge region of the electronic drive circuit 6.
  • the contact surface or the contact rail 9 is formed by a metal coating, which is applied to the upper side 8 of the circuit carrier 3.
  • the contact surface 9 or contact rail forms a continuous contacting line, which is connected to a stop 10 of the extension section 4.
  • the stop 10 of the extension portion 4 is formed by a projecting abutment rib 10 'and / or a stop surface 10 ".
  • the contacting between the light guide section 2 and the extension section 4 can also take place via resilient spring elements.
  • the light guide means comprising the light guide section 2 and the extension section 4 may be positively and / or non-positively or cohesively connected to the circuit substrate 3.
  • the circuit carrier 3 may have a recess 12 (groove) into which engages a web 13 of the light guiding means.
  • the extension portion 4 may be formed such that it surrounds at least one edge of the free edge 14 with an edge tab 15, so that in conjunction with the web-groove connection 12, 13 a clamping holder of the extension portion 4 or If appropriate, in addition to the light guide section 2 is given.
  • the circuit carrier 3 is preferably formed as a rigid circuit board, which extends in a plane. According to an alternative embodiment not shown, the circuit carrier 3 may have an additional metal coating on a side facing away from the extension section 4, which increases the shielding effect.
  • the light guide section 2 and the extension section 4 may be formed by a sheet metal part or a cast part.
  • the light guide section 2 is integrally connected to the extension section 4.
  • the shaping takes place during the casting during the primary molding.
  • the shaping in particular of the light guide section 2, adapted to the intended use, can be brought about by forming.
  • the light guide section 2 is preferably designed as a reflector, wherein at relatively high requirements, this reflector may be additionally provided with a mirror surface. In a simplest embodiment, the reflector has no mirror coating, so that the light is reflected at the casting surface or sheet metal surface.

Landscapes

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

Abstract

L'invention concerne un dispositif d'éclairage, destiné à des véhicules, comprenant une source de lumière (1), un moyen de guidage de lumière (2) associé à la source de lumière (1) et comportant une section de guidage de lumière (2) destinée à générer une distribution de lumière prédéterminée, et des moyens de protection (4) destiné à protéger contre un rayonnement électromagnétique parasite généré par un composant électronique (5). Le moyen de guidage de lumière comporte une partie d'extension (4) qui entoure au moins partiellement le composant électronique (5) et qui est conçue de manière à réaliser une protection contre le rayonnement électromagnétique parasite émis par le composant électronique (5).
PCT/EP2018/068352 2017-07-12 2018-07-06 Dispositif d'éclairage pour véhicules WO2019011797A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017115593.7A DE102017115593A1 (de) 2017-07-12 2017-07-12 Beleuchtungsvorrichtung für Fahrzeuge
DE102017115593.7 2017-07-12

Publications (1)

Publication Number Publication Date
WO2019011797A1 true WO2019011797A1 (fr) 2019-01-17

Family

ID=63014491

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/068352 WO2019011797A1 (fr) 2017-07-12 2018-07-06 Dispositif d'éclairage pour véhicules

Country Status (2)

Country Link
DE (1) DE102017115593A1 (fr)
WO (1) WO2019011797A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023227188A1 (fr) * 2022-05-23 2023-11-30 HELLA GmbH & Co. KGaA Dispositif d'éclairage pour un véhicule

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004003793U1 (de) 2004-03-11 2004-05-13 Hella Kg Hueck & Co. Leuchtdiodenanordnung, insbesondere zum Einbau in Fahrzeuge
DE102004027602A1 (de) 2004-06-05 2006-01-05 Hella Kgaa Hueck & Co. Scheinwerfer für Fahrzeuge
DE102007037822A1 (de) * 2007-08-10 2009-02-12 Osram Gesellschaft mit beschränkter Haftung Beleuchtungsvorrichtung
DE102013111518A1 (de) 2013-10-18 2015-04-23 Hella Kgaa Hueck & Co. Leuchteinheit für ein Kraftfahrzeug
EP2940375A1 (fr) * 2014-04-28 2015-11-04 Valeo Vision Belgique Dispositif d'atténuation de perturbations électromagnétiques, et module lumineux de véhicule automobile équipé d'un tel dispositif
DE102014223653A1 (de) * 2014-11-20 2016-05-25 Zf Friedrichshafen Ag Elektrische Schaltung und Verfahren zum Herstellen einer elektrischen Schaltung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5287324B2 (ja) * 2009-02-13 2013-09-11 市光工業株式会社 車両用灯具
DE102009047765A1 (de) * 2009-12-10 2011-06-16 Ifm Electronic Gmbh Beleuchtung
JP2014149978A (ja) * 2013-02-01 2014-08-21 Ichikoh Ind Ltd 車両用灯具

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004003793U1 (de) 2004-03-11 2004-05-13 Hella Kg Hueck & Co. Leuchtdiodenanordnung, insbesondere zum Einbau in Fahrzeuge
DE102004027602A1 (de) 2004-06-05 2006-01-05 Hella Kgaa Hueck & Co. Scheinwerfer für Fahrzeuge
DE102007037822A1 (de) * 2007-08-10 2009-02-12 Osram Gesellschaft mit beschränkter Haftung Beleuchtungsvorrichtung
DE102013111518A1 (de) 2013-10-18 2015-04-23 Hella Kgaa Hueck & Co. Leuchteinheit für ein Kraftfahrzeug
EP2940375A1 (fr) * 2014-04-28 2015-11-04 Valeo Vision Belgique Dispositif d'atténuation de perturbations électromagnétiques, et module lumineux de véhicule automobile équipé d'un tel dispositif
DE102014223653A1 (de) * 2014-11-20 2016-05-25 Zf Friedrichshafen Ag Elektrische Schaltung und Verfahren zum Herstellen einer elektrischen Schaltung

Also Published As

Publication number Publication date
DE102017115593A1 (de) 2019-01-17

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