DE102007016442A1 - LED lamp i.e. LED headlamp, for motor vehicle, has LED emitting light on reflector towards side that is turned away from light outlet opening, and heat accumulator integrated in retaining body i.e. design panel, on side of cover glass - Google Patents
LED lamp i.e. LED headlamp, for motor vehicle, has LED emitting light on reflector towards side that is turned away from light outlet opening, and heat accumulator integrated in retaining body i.e. design panel, on side of cover glass Download PDFInfo
- Publication number
- DE102007016442A1 DE102007016442A1 DE102007016442A DE102007016442A DE102007016442A1 DE 102007016442 A1 DE102007016442 A1 DE 102007016442A1 DE 102007016442 A DE102007016442 A DE 102007016442A DE 102007016442 A DE102007016442 A DE 102007016442A DE 102007016442 A1 DE102007016442 A1 DE 102007016442A1
- Authority
- DE
- Germany
- Prior art keywords
- led
- holder body
- reflector
- cover
- light
- 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
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]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled 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
- 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
- F21S45/48—Passive cooling, e.g. using fins, thermal conductive elements or openings with means for conducting heat from the inside to the outside of the lighting devices, e.g. with fins on the outer surface of the lighting 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
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/60—Heating of lighting devices, e.g. for demisting
-
- 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
- F21V29/767—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having directions perpendicular to the light emitting axis
-
- 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/90—Heating arrangements
-
- 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
- F21V7/00—Reflectors for light sources
- F21V7/0008—Reflectors for light sources providing for indirect lighting
-
- 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
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Die Erfindung betrifft eine LED-Leuchte für ein Kraftfahrzeug, die eine Kühleinrichtung für die wenigstens eine LED aufweist, insbesondere eine Scheinwerfereinheit.The The invention relates to an LED lamp for a motor vehicle, the one cooling device for the at least one LED, in particular a headlamp unit.
Eine LED (Light Emitting Diode) erzeugt neben Licht auch Wärme, die im Leuchtengehäuse zu einem unerwünschten und die LED zerstörenden Temperaturanstieg führen kann. Daher ist die wenigstens eine LED mit einem Kühlkörper wärmeübertragend verbunden, der sich als Wärmeleitelement von der LED in einen Bereich erstrecken kann, der für eine Wärmeabstrahlung zu einer eine Lichtaustrittsöffnung verschließenden Abdeckscheibe geeignet ist, oder der direkt mit der Leuchtenumgebung in thermischer Verbindung steht. Die Abdeckscheibe wird durch die erzeugte Warmluftströmung erwärmt, wodurch eine Enttauung im Innern des Gehäuses, insbesondere an der Innenseite der Abdeckscheibe, bis hin zu einer Enteisung an der Außenseite der Abdeckscheibe bewirkt werden kann.A LED (Light Emitting Diode) generates not only light but also heat, in the luminaire housing to an undesirable and lead the LED destructive temperature rise can. Therefore, the at least one LED with a heat sink heat transfer connected, which turns out as a heat-conducting element of the LED can extend into an area suitable for a Heat radiation to a light exit opening closing cover is suitable, or directly is in thermal communication with the lighting environment. The cover is heated by the generated warm air flow, thereby a Enttauung inside the housing, in particular to the inside of the cover, up to a de-icing the outside of the cover can be effected.
Die
Des
Weiteren hat die
Ferner
hat die
Es ist Aufgabe der Erfindung, eine LED-Leuchte für ein Kraftfahrzeug nach dem Oberbegriff des Anspruchs 1 so zu gestalten, dass zumindest bei deren Betreiben ein Feuchtigkeitsbeschlag auf der Abdeckscheibe beseitigt und ein Beschlagen derselben verhindert wird.It Object of the invention, an LED light for a motor vehicle according to the preamble of claim 1 to be designed so that at least when operating a moisture fitting on the cover eliminated and fogging the same is prevented.
Diese Aufgabe wird bei einer LED-Leuchte nach dem Oberbegriff des Anspruchs 1 durch dessen kennzeichnende Merkmale gelöst. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen aufgeführt.These Task is in an LED light according to the preamble of the claim 1 solved by its characterizing features. advantageous Embodiments are listed in the subclaims.
Die Erfindung besteht darin, dass bei einer LED-Leuchte, die ein wenigstens eine LED aufnehmendes Leuchtengehäuse, einen Reflektor, einen als Kühlkörper ausgebildeten Halterungskörper für die LED sowie eine eine Lichtaustrittsöffnung verschließende Abdeckscheibe aufweist, der Halterungskörper zwischen dem Reflektor und der Abdeckscheibe angeordnet ist und auf der der Lichtaustrittsöffnung abgewandten Seite eine Anordnungsfläche für die LED ausbildet, über die die LED mit dem Halterungskörper thermisch gekoppelt ist, wobei diese ihr Licht nach der der Lichtaustrittsöffnung abgewandten Seite auf den Reflektor abstrahlt, und dass im Halterungskörper abdeckscheibenseitig ein Wärmespeicher integriert ist. Der Halterungskörper führt einen Grossteil der beim Betreiben der LED in der Fahrzeugleuchte im hinteren bzw. reflektornahen Bereich erzeugten Wärme zum vorderen bzw. abdeckscheibennahen Bereich und auch an die Leuchtenumgebung ab, so dass die LED-Umgebungstemperaturen nicht in den für diese kritischen und unerwünschten Temperaturbereich steigen, in dem diese zerstört werden kann. Zugleich erwärmt der Halterungskörper dessen Umgebungsluft in der Leuchte, so dass eine Luftzirkulation angeregt wird, die auch die Abdeckscheibe erreicht und erwärmt. Durch die erwärmte Luft wird die betaute oder vereiste Abdeckscheibe enttaut. Dieser Effekt wird durch den Wärmespeicher unterstützt, dem über den Halterungskörper Wärmeenergie zugeführt wird, die dieser nach dem Betreiben der Leuchte wieder freisetzen kann.The Invention is that in an LED light, the at least one an LED housing, a reflector, designed as a heat sink holder body for the LED as well as a light exit opening having closing cover, the holder body is disposed between the reflector and the cover plate and on the side facing away from the light exit opening a Arrangement surface for the LED trains, over which thermally coupled the LED to the retainer body is, whereby this their light after that of the light exit opening facing away from the reflector, and that in the holder body cover disk side, a heat storage is integrated. The holder body carries a large part of when operating the LED in the vehicle lamp in the rear or near the reflector Area generated heat to the front or Abdeckscheibenen close Range and also to the lighting environment, so the LED ambient temperatures are not in the for this critical and undesirable temperature range rise, where it can be destroyed. At the same time heated the holder body whose ambient air in the lamp, so that air circulation is stimulated, which is also the cover reached and warmed up. Through the heated air the dewy or icy cover disc is disappointed. This effect is supported by the heat storage, the over supplied heat energy to the holder body will release this after operating the lamp again can.
Die Anordnung des Halterungskörpers und der LED an diesem bietet auch eine große Designfreiheit, wobei die LED bei einem Blick von vorne in die Leuchte nicht sichtbar ist. Dabei kann der Halterungskörper leuchteninnenseitig als Designblende gestaltet sein, an seiner Außenseite Befestigungsmittel zur Festlegung der Leuchte am Fahrzeugaufbau aufweisen und außenseitig mit Kühlrippen versehen sein. Von besonderem Vorteil ist auch, dass am Halterungskörper zur Ausbildung verschiedener Lichtfunktionen bzw. Fahr- und Signallichter unterschiedliche LED's oder Gruppen von LED's angeordnet sein können, gegebenenfalls in Verbindung mit einer entsprechenden Reflektorgestaltung für die unterschiedlichen LED's bzw. Lichfunktionen. Wegen der guten Wärmeleitfähigkeit empfiehlt sich als Halterungskörperwerkstoff Aluminium oder eine Al-legierung.The arrangement of the holder body and the LED on this also offers a great design freedom, the LED is not visible when looking from the front of the lamp. In this case, the holding Radiator inside be designed as a design panel, on its outside fastening means for fixing the lamp to the vehicle body and be provided on the outside with cooling fins. It is also of particular advantage that different LED's or groups of LEDs can be arranged on the holder body to form different light functions or driving and signal lights, optionally in conjunction with a corresponding reflector design for the different LED's or Lichfunktionen. Because of the good thermal conductivity is recommended as a bracket body material aluminum or an Al alloy.
Der Wärmespeicher kann dabei eine Wärmespeichermasse umfassen, die derart zusammengesetzt ist, dass diese im Bereich der Temperatur des durch das Betreiben der LED erwärmten Halterungskörpers einer chemischen oder physikalischen Umwandlung unterliegt, durch die zugleich eine Erhöhung der Wärmespeicherkapazität erzielt wird. Die gespeicherte Wärme wird in Abhängigkeit von der Wärmespeichermasse freigesetzt, sobald sich der Halterungskörper abkühlt und sich die Wärmespeichermasse rückumwandelt oder die Rückumwandlung im abgekühlten Zustand desselben durch einen elektronischen Steuerimpuls ausgelöst wird. Letzteres ermöglicht ein Enttauen und Enteisen der Abdeckscheibe zu einem gewünschten Zeitpunkt, beispielsweise vor dem Betreiben der LED-Leuchte.Of the Heat storage can be a heat storage mass which is composed so that these in the field the temperature of the heated by the operation of the LED Holder body of a chemical or physical Conversion is subject, by the same time an increase the heat storage capacity is achieved. The saved Heat becomes dependent on the heat storage mass released as soon as the holder body cools and the heat storage mass returns or the reconversion in the cooled state the same triggered by an electronic control pulse becomes. The latter allows defrosting and deicing the Cover at a desired time, for example before operating the LED light.
Das Leuchtengehäuse kann vorteilhaft durch den Halterungskörper und den Reflektor gebildet sein, wobei die Abdeckscheibe direkt mit dem Halterungskörper und mit dem Reflektor verbunden ist. Damit ist eine LED-Leuchte geschaffen, die ohne ein deren Funktionskomponenten umschließendes Leuchtengehäuse auskommt. Die Leuchte ist auf diese Weise um den Halterungskörper als zentrales Leuchtenbauteil aufgebaut, der zugleich Kühlkomponente für die LED ist, und daher erheblich aufwandsreduziert.The Luminaire housing can advantageously by the holder body and the reflector be formed, the cover directly connected to the holder body and to the reflector is. This creates an LED luminaire without any of its functional components enclosing luminaire housing requires. The lamp is in this way to the holder body as a central lighting component built, the cooling component for the same time LED is, and therefore significantly reduced costs.
Die Erfindung wird nachstehend anhand von Ausführungsbeispielen erläutert. In den zugehörigen Zeichnungen zeigen:The Invention will be described below by means of embodiments explained. In the accompanying drawings show:
Der
in den
Beim
Betreiben des Scheinwerfers wird das von den LED's
- 11
- Halterungskörperholder body
- 22
- Kühlrippecooling fin
- 33
- Befestigungsmittelfastener
- 44
- Reflektorreflector
- 55
- LichtaustrittsöffnungLight opening
- 66
- Abdeckscheibecover plate
- 77
- ReflektorseitenwandReflector sidewall
- 88th
- Anordnungsflächedisposing area
- 99
- LEDLED
- 1010
- Wärmespeicherheat storage
- 1111
- Designblendedesign trim
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 102004017454 A1 [0003] DE 102004017454 A1 [0003]
- - DE 102004046764 A1 [0004] DE 102004046764 A1 [0004]
- - DE 10346070 A1 [0005] - DE 10346070 A1 [0005]
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007016442.6A DE102007016442B4 (en) | 2007-04-05 | 2007-04-05 | LED light for a motor vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007016442.6A DE102007016442B4 (en) | 2007-04-05 | 2007-04-05 | LED light for a motor vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102007016442A1 true DE102007016442A1 (en) | 2008-10-09 |
DE102007016442B4 DE102007016442B4 (en) | 2017-02-16 |
Family
ID=39736202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007016442.6A Active DE102007016442B4 (en) | 2007-04-05 | 2007-04-05 | LED light for a motor vehicle |
Country Status (1)
Country | Link |
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DE (1) | DE102007016442B4 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009013941A1 (en) | 2009-03-19 | 2010-09-23 | Volkswagen Ag | Lighting device i.e. headlight, for motor vehicle, has dewing prevention unit including heat-storing material that is subject to dewing-critical temperature range of solid to liquid or liquid to solid phase transformation of material |
EP2241798A1 (en) * | 2009-04-17 | 2010-10-20 | Valeo Vision | Support for a light source such as a light-emitting diode |
GB2496488A (en) * | 2011-11-11 | 2013-05-15 | Gm Global Tech Operations Inc | Vehicle lamp with light-emitting diode as light source |
WO2013134804A1 (en) * | 2012-03-12 | 2013-09-19 | Zizala Lichtsysteme Gmbh | Vehicle headlight with laser light source |
EP2722579A1 (en) * | 2012-10-19 | 2014-04-23 | Automotive Lighting Reutlingen GmbH | Motor vehicle headlamp with light source and a cooling system for the light source |
KR20190080279A (en) * | 2017-12-28 | 2019-07-08 | 현대자동차주식회사 | Device for removing moisture for headlamp using latent heat storage material and method for removing moisture for headlamp using the same |
EP3832196A4 (en) * | 2018-08-02 | 2021-12-22 | Ichikoh Industries, Ltd. | Vehicle lighting unit |
Citations (5)
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DE10258624B3 (en) * | 2002-12-16 | 2004-07-15 | Daimlerchrysler Ag | Headlamp unit for a motor vehicle |
EP1459934A2 (en) * | 2003-03-17 | 2004-09-22 | DaimlerChrysler AG | Vehicle headlamp |
DE102004017454A1 (en) | 2003-04-08 | 2005-01-05 | Koito Mfg. Co., Ltd. | Headlights for vehicles |
DE10346070A1 (en) | 2003-10-04 | 2005-05-04 | Hella Kgaa Hueck & Co | Cooling device for automobile headlamp unit using cooling plate incorporated in base of headlamp housing provided with drainage outlet for condensation |
DE102004046764A1 (en) | 2004-09-24 | 2006-04-06 | Daimlerchrysler Ag | vehicle headlights |
-
2007
- 2007-04-05 DE DE102007016442.6A patent/DE102007016442B4/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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DE10258624B3 (en) * | 2002-12-16 | 2004-07-15 | Daimlerchrysler Ag | Headlamp unit for a motor vehicle |
EP1459934A2 (en) * | 2003-03-17 | 2004-09-22 | DaimlerChrysler AG | Vehicle headlamp |
DE102004017454A1 (en) | 2003-04-08 | 2005-01-05 | Koito Mfg. Co., Ltd. | Headlights for vehicles |
DE10346070A1 (en) | 2003-10-04 | 2005-05-04 | Hella Kgaa Hueck & Co | Cooling device for automobile headlamp unit using cooling plate incorporated in base of headlamp housing provided with drainage outlet for condensation |
DE102004046764A1 (en) | 2004-09-24 | 2006-04-06 | Daimlerchrysler Ag | vehicle headlights |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009013941A1 (en) | 2009-03-19 | 2010-09-23 | Volkswagen Ag | Lighting device i.e. headlight, for motor vehicle, has dewing prevention unit including heat-storing material that is subject to dewing-critical temperature range of solid to liquid or liquid to solid phase transformation of material |
EP2241798A1 (en) * | 2009-04-17 | 2010-10-20 | Valeo Vision | Support for a light source such as a light-emitting diode |
FR2944579A1 (en) * | 2009-04-17 | 2010-10-22 | Valeo Vision | LIGHT SOURCE SUPPORT OF THE LIGHT EMITTING DIODE TYPE. |
GB2496488A (en) * | 2011-11-11 | 2013-05-15 | Gm Global Tech Operations Inc | Vehicle lamp with light-emitting diode as light source |
CN103104873B (en) * | 2011-11-11 | 2016-08-10 | 通用汽车环球科技运作有限责任公司 | There is the light emitting diode auto lamp as light source |
EP2745042B1 (en) | 2012-03-12 | 2016-02-24 | Zizala Lichtsysteme GmbH | Vehicle headlight with laser light source |
WO2013134804A1 (en) * | 2012-03-12 | 2013-09-19 | Zizala Lichtsysteme Gmbh | Vehicle headlight with laser light source |
US9611994B2 (en) | 2012-03-12 | 2017-04-04 | Zkw Group Gmbh | Vehicle headlight with laser light source |
EP2722579A1 (en) * | 2012-10-19 | 2014-04-23 | Automotive Lighting Reutlingen GmbH | Motor vehicle headlamp with light source and a cooling system for the light source |
KR20190080279A (en) * | 2017-12-28 | 2019-07-08 | 현대자동차주식회사 | Device for removing moisture for headlamp using latent heat storage material and method for removing moisture for headlamp using the same |
KR102371068B1 (en) | 2017-12-28 | 2022-03-07 | 현대자동차주식회사 | Device for removing moisture for headlamp using latent heat storage material and method for removing moisture for headlamp using the same |
EP3832196A4 (en) * | 2018-08-02 | 2021-12-22 | Ichikoh Industries, Ltd. | Vehicle lighting unit |
US11300267B2 (en) | 2018-08-02 | 2022-04-12 | Ichikoh Industries, Ltd. | Vehicle lighting unit |
Also Published As
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DE102007016442B4 (en) | 2017-02-16 |
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