EP2178722B1 - Dispositif d'éclairage pour véhicules - Google Patents

Dispositif d'éclairage pour véhicules Download PDF

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Publication number
EP2178722B1
EP2178722B1 EP08784383.5A EP08784383A EP2178722B1 EP 2178722 B1 EP2178722 B1 EP 2178722B1 EP 08784383 A EP08784383 A EP 08784383A EP 2178722 B1 EP2178722 B1 EP 2178722B1
Authority
EP
European Patent Office
Prior art keywords
illuminating device
reflector
charge
charge dissipation
dissipation path
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
EP08784383.5A
Other languages
German (de)
English (en)
Other versions
EP2178722A1 (fr
Inventor
Oliver Kaak
Jürgen HIGGEN
Frank Johannsmann
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella GmbH and 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 and Co KGaA filed Critical Hella GmbH and Co KGaA
Publication of EP2178722A1 publication Critical patent/EP2178722A1/fr
Application granted granted Critical
Publication of EP2178722B1 publication Critical patent/EP2178722B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on 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
    • 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
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/33—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors characterised by their material, surface treatment or coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • 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
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes

Definitions

  • the invention relates to a lighting device for vehicles, in particular tail lamp, comprising a housing containing at least one light source, a carrier receiving the light source and a reflector, and having a lens for covering an opening of the housing.
  • a lighting device for vehicles is known with a housing in which a plurality of light sources are arranged.
  • a plurality of light sources are designed as light-emitting elements (LED), which are arranged on a common light-emitting element carrier.
  • LED light-emitting elements
  • a reflector is arranged for guiding the light emitted by the light elements.
  • another type of light source is arranged in the housing, namely an incandescent lamp which serves to produce a different light function.
  • the housing which is open at the front in the main emission direction, is covered by a lens.
  • ESD electrostatic discharges
  • Object of the present invention is to provide a lighting device for vehicles in such a way that when installing the lighting device in a body panel of a vehicle, especially when electrically connecting the lighting device to the electrical system of the vehicle, the function of applied to a support electrical components is maintained.
  • the invention in conjunction with the preamble of claim 1, characterized in that the reflector provided with an electrically conductive layer charge derivation means are assigned, such that when an electrostatic charge of the reflector flows a discharge current to a ground terminal of the illumination device.
  • the invention makes it possible by charge discharge means a targeted outflow of a short relatively high electric current in the direction of a ground terminal of the lighting device. Potential differences between a reflector and the body of the vehicle occurring during installation of the illumination device in a body cutout of the vehicle are determined by the charge deflection means balanced, without that on a support of the light source arranged electrical components of a control device, such as transistors, diodes and the like, can be destroyed. These electrical components can be used, for example, for diagnostic purposes, for overvoltage protection or for driving light-emitting diodes.
  • a charge conduction path is provided as a charge dissipation means, which is contacted directly at a first end with the reflector and at a second end directly to a ground terminal of the carrier or a central connector of the illumination device.
  • a targeted discharge of charge can thereby be achieved, bypassing electrically conductive surfaces of the carrier in the case of an electrostatic charging of the reflector.
  • Reflectors in the context of the invention are all plastic surfaces which are suitable to be electrostatically charged and are arranged in contact or in the vicinity of the support of the light sources.
  • the charge dissipation path according to the invention can also serve to improve the electromagnetic compatibility of the illumination device.
  • electromagnetic interference that could lead to components of the carrier in undefined states, such as the glimmer of light-emitting diodes, driving through transistors are prevented by the targeted derivation of the electric current.
  • the charge dissipation path is electrically and mechanically coupled to the reflector via a contact spring element and / or via a plug-in element.
  • this can be used to produce a secure electrical connection and, secondly, a relatively simple mechanical connection between the reflector and the charge dissipation path.
  • the charge dissipation path can be integrated in a bulb holder for receiving a plurality of light bulbs for a light function.
  • the charge dissipation path can be formed as a separate dissipation conductor together with further electrical conductors as a stamped grid of the lamp carrier. For electrostatic discharge can thus take place in the bulb holder targeted charge discharge.
  • the charge dissipation path can be formed as a current-conducting conductor track, which is integrated in a light-emitting element carrier designed as a printed circuit board.
  • the charge dissipation path can thereby be produced in a space-saving and cost-effective manner.
  • the first end of the current-conducting conductor track is formed as a bonding pad, which is arranged in the region of a mounting hole of the printed circuit board.
  • a fastening element provided for fastening the printed circuit board to the reflector can be contacted in the region of the fastening bore with the current-conducting printed conductor, so that without additional mechanical and electrical connections Connecting means a coupling between the charge dissipation path on the one hand and the reflector on the other hand can be made.
  • this assembly can be simplified.
  • a lighting device according to the invention for vehicles is preferably designed as a tail lamp, which with a housing is arranged in a body cutout of the vehicle.
  • a light-emitting element carrier 3 is provided in the housing as a carrier, which carries a plurality of light-emitting elements 4 (LED) as a printed circuit board.
  • the LED lighting elements 4 serve to generate another light function, such as a brake light function.
  • a main emission direction H of the light bundle generated by the illumination device front opening of the housing is covered by a lens 5.
  • the circuit board 3 is elongated formed as a strip, the LED lighting elements 4 are arranged in rows and at a distance from each other. Between the LED lighting elements 4 each mounting holes 6 are arranged so that fastening screws 7 can engage as fastening means for mounting the circuit board 3 at a main radiation H behind the printed circuit board 3 arranged reflector 8.
  • the reflector 8 as fastening means projecting Befest Trentsdome. 9 on, which rest on a rear side 10 of the printed circuit board 3 and are in rotary engagement with the fastening screw 7, see FIG. 4 ,
  • a further reflector 11 is provided in the main emission direction H in front of the bulb holder 1, for guiding the light emitted by the incandescent lamps 2 light.
  • the reflectors 8 and 11 each consist of a plastic material which is provided with an aluminum coating by means of vapor deposition.
  • charge derivation means are provided according to the invention.
  • a separate charge discharge path 12 is provided on a side of the lamp support 1 facing the reflector 11, which is arranged integrated as an electric charge conductor in a stamped grid of the lamp support 1.
  • the stamped grid moreover comprises further electrical conductors which serve for electrical connection of the incandescent lamps 2 to an electrical terminal 13 of the lamp carrier 1.
  • the electrical connection 13 has a plurality of contact elements, which can be electrically and mechanically connected to a central plug 14 of a central plug-in device, wherein the central plug 14 is connected via a cable to the electrical system of the vehicle.
  • the charge dissipation path 12 is electrically and mechanically connected to a wall portion 17 of the reflector 11 at a first end 15 thereof via a contact spring element 16.
  • the contact spring element 16 is made of an electrically conductive material and has a U-shaped portion 18, by means of which it is clamping is connected to the wall portion 17 of the reflector 11. Furthermore, the contact spring element 16 has a V-shaped portion 19 which presses on the first end 15 of the charge arrester 12.
  • a second end 20 of the charge arrester 12 is connected to a ground terminal M of the lamp carrier terminal 13.
  • the charge dissipation path may be formed as a power cable 21 extending in the space between the reflector 8 and a ground terminal M of the lamp support terminal 13 or the illumination device.
  • the ground connection M of the illumination device is arranged integrated in the electrical connection 13 of the lamp carrier 1.
  • a first end of the power line cable 21 is mechanically and electrically connected via a plug-in element 22 to a web-shaped wall section 23 of the reflector 8.
  • the power cable 21 extends together with a power cable 24 of the circuit board 3 to the terminal 13 of the lamp support 1.
  • the power cable 21 and the power cable 24 may be interconnected by crimping.
  • the power cable 24 is like the power cable 21 via a peripheral contact plug 22 'connected to connecting tracks of the circuit board 3.
  • a charge dissipation path as a charge-draining Conductor 25 is formed, which extends on the reflector 8 facing the rear side 10 of the printed circuit board 3.
  • a first end of the charge-dissipating interconnect 25 is formed as a bonding pad 26 which extends in the region of a front side of the circuit board 3 facing mounting hole 6.
  • the bonding pad 26 extends annularly around the mounting hole 6. In the region of the bonding pad 26, the printed circuit board 3 has no copper layers.
  • the bonding pad 26 can be produced, for example, by the application of solder, like the charge-dissipating conductive track itself.
  • the first end of the charge-dissipating interconnect 25 is thus located in a mounting area between the circuit board 3 and the reflector 8.
  • the fastening screw 7 is in screw engagement with the mounting dome 9 of the reflector 8, wherein the mounting dome 9 with a free end face on the bonding pad 26 is present.
  • a second end of the charge-discharging conductor 25 is connected to the ground terminal M of the tracks of the circuit mounted on the printed circuit board 3.
  • a plug-in element 27 which can be plugged on at the end is arranged, from which a power cable 28 leads to the electrical connection 13 of the lamp support 1.
  • the charge-dissipating conductor 25 causes a direct discharge of charge from the reflector 8 in the direction of the ground connection M of a central plug-in device in a manner which is simple in terms of production technology, so that the rear side 10 of the printed circuit board 3 arranged electronic components 29, such as transistors or the like, are not damaged in an electrostatic discharge of the reflector 8.
  • the circuit board can be used exclusively for controlling remote light sources (LED lighting elements), wherein the circuit board is equipped exclusively with electronic components for the control, but not with LED lighting elements.
  • LED lighting elements LED lighting elements
  • the illumination device may also be designed as a headlight or as arranged in an interior of the vehicle interior light.
  • the lighting device according to the invention can be used wherever metallic surfaces are present, which could lead to an undesirable electrical charge.

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)

Claims (10)

  1. Dispositif d'éclairage pour véhicules automobiles, en particulier feu arrière, avec un boîtier doté d'au moins une source de lumière (1), d'un support pour la réception de la source de lumière et d'un réflecteur, et doté d'un diffuseur de lumière, qui est destiné à recouvrir une ouverture du boîtier, caractérisé en ce que des moyens de dérivation de charge sont associés au réflecteur (8, 11) muni d'une couche conductrice d'électricité, de manière à ce que, lors de la formation d'une charge électrostatique du réflecteur (8, 11), un courant de dérivation s'écoule vers un raccord à la masse (M) du dispositif d'éclairage.
  2. Dispositif d'éclairage selon la revendication 1, caractérisé en ce que les moyens de dérivation de charge comprennent un chemin de dérivation de charge (12, 21, 25), qui est relié, à une première extrémité (15) de celui-ci, à une section de paroi (17) du réflecteur (11) et, à une deuxième extrémité de celui-ci, à un raccord à la masse (M) du support (1, 3) ou du dispositif d'enfichage central du dispositif d'éclairage.
  3. Dispositif d'éclairage selon revendication 1 ou 2, caractérisé en ce que la première extrémité (15) du chemin de dérivation de charge (12, 21, 25) est couplée électriquement et mécaniquement avec la section de paroi (17) du réflecteur (8, 11) par l'intermédiaire d'un élément de contact faisant ressort (16).
  4. Dispositif d'éclairage selon l'une des revendications 1 à 3, caractérisé en ce que le chemin de dérivation de charge est réalisé en forme de conducteur électrique de dérivation de charge (12), qui, en commun avec d'autres conducteurs électriques, forme un grillage estampé, qui est intégré dans un support, conçu en tant que porte-lampe (1) pour au moins une lampe à incandescence (2).
  5. Dispositif d'éclairage selon la revendication 4, caractérisé en ce que l'élément de contact faisant ressort (16) présente une section en forme de U (18) pour la liaison amovible à la tubulure (1.1) et une section en forme de V (19) pour la liaison à la première extrémité (15) du conducteur électrique de dérivation de charge (12) d'autre part.
  6. Dispositif d'éclairage selon l'une des revendications 1 à 5, caractérisé en ce que le conducteur électrique de dérivation de charge (12) est réalisé en forme de piste conductrice de dérivation de charge (25), qui s'étend sur une plaquette de circuits (3) pourvue d'une pluralité de diodes électroluminescentes (4) en tant que sources de lumière.
  7. Dispositif d'éclairage selon la revendication 6, caractérisé en ce que la première extrémité de la piste conductrice de dérivation de charge (25) présente la forme d'une plage de connexion (26) qui s'étend sur le côté marginal d'un alésage de fixation (6) de la plaquette de circuits (3) recevant un moyen de fixation (7) pour la fixation de la plaquette de circuits (3) au réflecteur (8), sachant qu'un élément de fixation (9) du réflecteur (8) porte, au moins partiellement, contre la plage de connexion (26).
  8. Dispositif d'éclairage selon l'une des revendications 1 à 7, caractérisé en ce que la plaquette de circuits (3) présente une pluralité de composants électroniques (29) sur une face (10) opposée aux éléments d'éclairage (4).
  9. Dispositif d'éclairage selon l'une des revendications 1 à 8, caractérisé en ce que le chemin de dérivation de charge présente la forme d'un câble conducteur de courant (21) qui s'étend entre l'élément d'enfichage (22), fixé de manière amovible au réflecteur (8) et le raccord électrique de la plaquette de circuits (3) ou du raccord à la masse (M) du dispositif d'enfichage central du dispositif d'éclairage.
  10. Dispositif d'éclairage selon l'une des revendications 1 à 9, caractérisé en ce que le dispositif d'enfichage central du dispositif d'éclairage et /ou le raccord électrique (13) du porte-lampe (1) sont disposés sur la face arrière du boîtier.
EP08784383.5A 2007-08-10 2008-07-24 Dispositif d'éclairage pour véhicules Active EP2178722B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200720011255 DE202007011255U1 (de) 2007-08-10 2007-08-10 Beleuchtungseinrichtung für Fahrzeuge
PCT/DE2008/001209 WO2009021482A1 (fr) 2007-08-10 2008-07-24 Dispositif d'éclairage pour véhicules

Publications (2)

Publication Number Publication Date
EP2178722A1 EP2178722A1 (fr) 2010-04-28
EP2178722B1 true EP2178722B1 (fr) 2017-12-13

Family

ID=38777380

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08784383.5A Active EP2178722B1 (fr) 2007-08-10 2008-07-24 Dispositif d'éclairage pour véhicules

Country Status (5)

Country Link
US (1) US8337061B2 (fr)
EP (1) EP2178722B1 (fr)
CN (1) CN101808855B (fr)
DE (2) DE202007011255U1 (fr)
WO (1) WO2009021482A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009039870A1 (de) 2009-09-03 2011-03-10 Hella Kgaa Hueck & Co. Beleuchtungsvorrichtung für Fahrzeuge
JP5708082B2 (ja) * 2010-03-24 2015-04-30 信越化学工業株式会社 パターン形成方法及びネガ型レジスト組成物
DE102010047899B4 (de) * 2010-10-11 2021-11-18 HELLA GmbH & Co. KGaA Beleuchtungseinrichtung
EP2587121A1 (fr) * 2011-10-28 2013-05-01 Hella KGaA Hueck & Co. Éclairage à diodes avec un réflecteur fixé sur la platine
ITMI20112041A1 (it) * 2011-11-10 2013-05-11 Cobra Automotive Technologies S P A Avvisatore acustico ed uso dello stesso
JP6247013B2 (ja) * 2013-04-01 2017-12-13 株式会社小糸製作所 車両用灯具
JP6441652B2 (ja) * 2014-02-12 2018-12-19 株式会社小糸製作所 車両用灯具
FR3032664B1 (fr) * 2015-02-13 2017-03-03 Valeo Vision Dispositif lumineux pour un vehicule automobile integrant des moyens de protection contre des decharges electrostatiques
DE102016101999A1 (de) * 2016-02-04 2017-08-10 Automotive Lighting Reutlingen Gmbh Lichtmodul für eine Kraftfahrzeugbeleuchtungseinrichtung
FR3052538B1 (fr) * 2016-06-09 2018-07-20 Valeo Vision Dispositif lumineux pour un vehicule automobile integrant des moyens de protection contre des decharges electrostatiques
EP3470729A1 (fr) * 2017-10-10 2019-04-17 Valeo Iluminacion Dispositif d'éclairage
FR3074564B1 (fr) * 2017-12-05 2019-11-08 Automotive Lighting Rear Lamps France Module lumineux comprenant un element de protection pour prevenir le passage de decharges electrostatiques entre l'exterieur et l'interieur du module lumineux

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1306770A (fr) * 1961-09-27 1962-10-19 Telefunken Patent Installation d'éclairage de route pour véhicules automobiles équipée de phares à occultation partielle
US6441943B1 (en) * 1997-04-02 2002-08-27 Gentex Corporation Indicators and illuminators using a semiconductor radiation emitter package
JP3720224B2 (ja) * 1999-10-19 2005-11-24 株式会社小糸製作所 車両用前照灯
BE1013248A3 (nl) * 2000-01-26 2001-11-06 Krypton Electronic Eng Nv Optisch apparaat.
DE102005059524A1 (de) * 2005-09-30 2007-04-05 Osram Opto Semiconductors Gmbh Gehäuse für ein elektromagnetische Strahlung emittierendes optoelektronisches Bauelement, Bauelement und Verfahren zum Herstellen eines Gehäuses oder eines Bauelements
DE102006001363A1 (de) * 2006-01-11 2007-07-12 Hella Kgaa Hueck & Co. Beleuchtungsvorrichtung für Fahrzeuge

Also Published As

Publication number Publication date
DE112008002760A5 (de) 2010-07-08
WO2009021482A1 (fr) 2009-02-19
CN101808855B (zh) 2013-06-19
US20100202151A1 (en) 2010-08-12
DE202007011255U1 (de) 2007-11-29
EP2178722A1 (fr) 2010-04-28
CN101808855A (zh) 2010-08-18
US8337061B2 (en) 2012-12-25

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