EP2178722A1 - Illuminating device for vehicles - Google Patents
Illuminating device for vehiclesInfo
- Publication number
- EP2178722A1 EP2178722A1 EP08784383A EP08784383A EP2178722A1 EP 2178722 A1 EP2178722 A1 EP 2178722A1 EP 08784383 A EP08784383 A EP 08784383A EP 08784383 A EP08784383 A EP 08784383A EP 2178722 A1 EP2178722 A1 EP 2178722A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reflector
- lighting device
- charge
- circuit board
- carrier
- 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
Links
- 238000007786 electrostatic charging Methods 0.000 claims abstract description 3
- 238000005286 illumination Methods 0.000 claims description 16
- 239000004020 conductor Substances 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 2
- 238000009792 diffusion process Methods 0.000 abstract 1
- 239000012799 electrically-conductive coating Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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 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 In the main emission direction in front of the light-emitting element carrier, 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 develop a lighting device for vehicles such 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 charge provided with an electrically conductive layer reflector are associated, such that when an electrostatic charge of the reflector a discharge current to a ground connection of the illumination device flows.
- 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 bodywork of the vehicle occurring during installation of the illumination device in a body section of the vehicle are determined by the charge deflection. compensated without the arranged on a support of the light source 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 the overvoltage contactor 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 acting on the circuit board, which 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 designed as a contact-making spot, which is arranged in the region of a fastening bore of the printed circuit board.
- a fastening element provided for fastening the printed circuit board to the reflector can be contacted with the current-conducting printed conductor in the region of the fastening bore, so that no additional mechanical and electrical components are required. see 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.
- FIG. 1 shows a partial vertical section through a lighting device in a region in which a lamp support with a charge discharge path according to a first embodiment is arranged
- FIG. 2 shows a top view of a luminous element carrier
- FIG. 3 shows a section through the illumination device in the region of a light-emitting element carrier with a charge dissipation path according to a second embodiment
- FIG 4 shows a partial section through the illumination device in the region of the light-emitting element carrier with a charge discharge path according to a third embodiment.
- 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 are used to generate another light function, such as a BremsIichtfunktion.
- a main emission direction H of the light bundle front opening of the housing generated by the illumination device is covered by means of a light disk 5.
- the circuit board 3 is elongated formed as a strip, wherein 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 bear against 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 lamp carrier 1 for guiding the light emitted by the incandescent lamps 2.
- 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 dissipation path 12 is provided on a side of the lamp support 1 facing the reflector 11, which is arranged integrated as an electric charge absorber 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 section 18, by means of which it clamps is connected to the wall portion 17 of the reflector 11. Further, the contact spring member 16 has a V-shaped portion 19 which presses on the first end 15 of the charge deflector 12.
- a second end 20 of the charge deflector 12 is connected to a ground terminal M of the lamp carrier terminal 13.
- the charge discharge path can be formed as a power cable 21 which extends in the space between the reflector 8 and a ground terminal M of the lamp carrier 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 holder 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 discharge path there is a charge discharge path.
- a charge conductive trace 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.
- the printed circuit board 3 has no copper layers.
- the bonding pad 26 can be produced, for example, by the application of solder, just like the drainage conductor 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 only serve to control remote light sources arranged (LED lighting elements), the circuit board is equipped exclusively with electronic components for the control, but not with 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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200720011255 DE202007011255U1 (en) | 2007-08-10 | 2007-08-10 | Lighting device for vehicles |
PCT/DE2008/001209 WO2009021482A1 (en) | 2007-08-10 | 2008-07-24 | Illuminating device for vehicles |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2178722A1 true EP2178722A1 (en) | 2010-04-28 |
EP2178722B1 EP2178722B1 (en) | 2017-12-13 |
Family
ID=38777380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08784383.5A Active EP2178722B1 (en) | 2007-08-10 | 2008-07-24 | Illuminating device for vehicles |
Country Status (5)
Country | Link |
---|---|
US (1) | US8337061B2 (en) |
EP (1) | EP2178722B1 (en) |
CN (1) | CN101808855B (en) |
DE (2) | DE202007011255U1 (en) |
WO (1) | WO2009021482A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009039870A1 (en) | 2009-09-03 | 2011-03-10 | Hella Kgaa Hueck & Co. | Lighting device for vehicle, comprises carrier, which has electrical printed circuit board, and light source, which has number of electrical elements |
JP5708082B2 (en) * | 2010-03-24 | 2015-04-30 | 信越化学工業株式会社 | Pattern forming method and negative resist composition |
DE102010047899B4 (en) * | 2010-10-11 | 2021-11-18 | HELLA GmbH & Co. KGaA | Lighting device |
EP2587121A1 (en) * | 2011-10-28 | 2013-05-01 | Hella KGaA Hueck & Co. | LED-based lighting with reflector mounted on PCB |
ITMI20112041A1 (en) * | 2011-11-10 | 2013-05-11 | Cobra Automotive Technologies S P A | HORN AND USE OF THE SAME |
JP6247013B2 (en) * | 2013-04-01 | 2017-12-13 | 株式会社小糸製作所 | Vehicle lighting |
JP6441652B2 (en) * | 2014-02-12 | 2018-12-19 | 株式会社小糸製作所 | Vehicle lighting |
FR3032664B1 (en) * | 2015-02-13 | 2017-03-03 | Valeo Vision | LUMINOUS DEVICE FOR A MOTOR VEHICLE INCORPORATING MEANS FOR PROTECTING ELECTROSTATIC DISCHARGES |
DE102016101999A1 (en) | 2016-02-04 | 2017-08-10 | Automotive Lighting Reutlingen Gmbh | Light module for a motor vehicle lighting device |
FR3052538B1 (en) * | 2016-06-09 | 2018-07-20 | Valeo Vision | LUMINOUS DEVICE FOR A MOTOR VEHICLE INCORPORATING MEANS FOR PROTECTING ELECTROSTATIC DISCHARGES |
EP3470729A1 (en) * | 2017-10-10 | 2019-04-17 | Valeo Iluminacion | Lighting device |
FR3074564B1 (en) * | 2017-12-05 | 2019-11-08 | Automotive Lighting Rear Lamps France | LUMINOUS MODULE COMPRISING A PROTECTIVE ELEMENT FOR PREVENTING ELECTROSTATIC DISCHARGE BETWEEN OUTSIDE AND INTERIOR OF THE LIGHT MODULE |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1306770A (en) * | 1961-09-27 | 1962-10-19 | Telefunken Patent | Road lighting installation for motor vehicles fitted with partially obscured headlights |
US6441943B1 (en) * | 1997-04-02 | 2002-08-27 | Gentex Corporation | Indicators and illuminators using a semiconductor radiation emitter package |
JP3720224B2 (en) * | 1999-10-19 | 2005-11-24 | 株式会社小糸製作所 | Vehicle headlamp |
BE1013248A3 (en) * | 2000-01-26 | 2001-11-06 | Krypton Electronic Eng Nv | Optical equipment. |
DE102005059524A1 (en) * | 2005-09-30 | 2007-04-05 | Osram Opto Semiconductors Gmbh | Housing for an electromagnetic radiation-emitting optoelectronic component, component and method for producing a housing or a component |
DE102006001363A1 (en) * | 2006-01-11 | 2007-07-12 | Hella Kgaa Hueck & Co. | Lighting device e.g. hybrid light, for vehicle, has illuminant unit with electric contact designed as contact spring for directly connecting unit with light carrier, where unit is designed as light emitting diode printed circuit board |
-
2007
- 2007-08-10 DE DE200720011255 patent/DE202007011255U1/en not_active Expired - Lifetime
-
2008
- 2008-07-24 EP EP08784383.5A patent/EP2178722B1/en active Active
- 2008-07-24 US US12/672,903 patent/US8337061B2/en active Active
- 2008-07-24 DE DE200811002760 patent/DE112008002760A5/en not_active Withdrawn
- 2008-07-24 WO PCT/DE2008/001209 patent/WO2009021482A1/en active Application Filing
- 2008-07-24 CN CN2008801026035A patent/CN101808855B/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2009021482A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20100202151A1 (en) | 2010-08-12 |
WO2009021482A1 (en) | 2009-02-19 |
EP2178722B1 (en) | 2017-12-13 |
US8337061B2 (en) | 2012-12-25 |
DE112008002760A5 (en) | 2010-07-08 |
CN101808855B (en) | 2013-06-19 |
CN101808855A (en) | 2010-08-18 |
DE202007011255U1 (en) | 2007-11-29 |
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