DE102015202358A1 - Lighting device for a motor vehicle - Google Patents
Lighting device for a motor vehicle Download PDFInfo
- Publication number
- DE102015202358A1 DE102015202358A1 DE102015202358.3A DE102015202358A DE102015202358A1 DE 102015202358 A1 DE102015202358 A1 DE 102015202358A1 DE 102015202358 A DE102015202358 A DE 102015202358A DE 102015202358 A1 DE102015202358 A1 DE 102015202358A1
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- DE
- Germany
- Prior art keywords
- cover
- lighting device
- heat
- coupling agent
- layer
- 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.)
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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
- F21S45/60—Heating of lighting devices, e.g. for demisting
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- 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
- F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
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- 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
- F21S41/28—Cover glass
-
- 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
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
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
Es wird eine Beleuchtungseinrichtung (2) für ein Kraftfahrzeug beschrieben. Eine Abdeckscheibe (20) wird mittels eines Koppelmittels (30) mit einem Lichtmodul thermisch gekoppelt. Das Koppelmittel (30) und die Abdeckscheibe (20) sind zu einer Wärmeeinleitung in die Abdeckscheibe (20) ausgebildet.An illumination device (2) for a motor vehicle is described. A cover plate (20) is thermally coupled by means of a coupling means (30) with a light module. The coupling means (30) and the cover (20) are designed for heat introduction into the cover (20).
Description
Die Erfindung betrifft eine Beleuchtungseinrichtung für ein Kraftfahrzeug nach dem Oberbegriff des Anspruchs 1.The invention relates to a lighting device for a motor vehicle according to the preamble of claim 1.
Es ist bekannt, dass sich durch Kondensation an der Innenseite einer Abdeckscheibe eines Scheinwerfers beziehungsweise einer Heckleuchte ein dünner Wasserfilm ausbildet. Insbesondere Endkunden halten dies für einen Defekt des Scheinwerfers beziehungsweise der Heckleuchte.It is known that a thin film of water is formed by condensation on the inside of a cover of a headlamp or a taillight. In particular, end customers consider this to be a defect of the headlight or tail light.
Des Weiteren ist bekannt, dass Lichtquellen innerhalb einer Beleuchtungseinrichtung eines Kraftfahrzeugs Wärme erzeugen, die abgeleitet werden muss.Furthermore, it is known that light sources within a lighting device of a motor vehicle generate heat that has to be dissipated.
Aus der
Aus der
Aufgabe der Erfindung ist es, eine Enttauung einer Beleuchtungseinrichtung für ein Kraftfahrzeug zu verbessern. The object of the invention is to improve a Enttauung a lighting device for a motor vehicle.
Die der Erfindung zugrundeliegende Aufgabe wird nach dem Anspruch 1 gelöst. Vorteilhafte Weiterbildungen sind in den Unteransprüchen angegeben. Für die Erfindung wichtige Merkmale finden sich ferner in der nachfolgenden Beschreibung und in den Zeichnungen, wobei die Merkmale sowohl in Alleinstellung als auch in unterschiedlichen Kombinationen für die Erfindung wichtig sein können, ohne dass hierauf nochmals explizit hingewiesen wird.The problem underlying the invention is solved according to claim 1. Advantageous developments are specified in the subclaims. Features which are important for the invention can also be found in the following description and in the drawings, wherein the features, both alone and in different combinations, can be important for the invention, without being explicitly referred to again.
Dadurch, dass ein Koppelmittel und eine Abdeckscheibe zu einer Wärmeeinleitung in die Abdeckscheibe ausgebildet sind, wird vorteilhaft erreicht, dass sich eine Innenseite der Abdeckscheibe durch die Leuchteinheit erwärmen lässt und dadurch eine Enttauung vorteilhaft verbessert wird, da die Kondensation von Wasser unterdrückt wird.Characterized in that a coupling means and a cover plate are formed to heat in the cover, is advantageously achieved that an inside of the cover can be heated by the light unit and thereby a Enttauung is advantageously improved because the condensation of water is suppressed.
In einer vorteilhaften Ausführungsform findet eine flächige Wärmeeinleitung in die Abdeckscheibe statt. Dadurch wird vorteilhaft erreicht, dass sich eine geringe Temperaturdifferenz zwischen einem Äußeren der Beleuchtungseinrichtung und einem Inneren der Beleuchtungseinrichtung im Bereich der Abdeckscheibe ausbildet. Durch die geringe Temperaturdifferenz findet ein geringerer Wärmefluss statt und damit verbleibt mehr Wärmeenergie innerhalb der Beleuchtungseinrichtung. In an advantageous embodiment, a flat heat introduction takes place in the cover. This advantageously ensures that a small temperature difference between an exterior of the illumination device and an interior of the illumination device in the region of the cover plate is formed. Due to the low temperature difference, a lower heat flow takes place and thus more heat energy remains within the lighting device.
In einer vorteilhaften Ausführungsform ist die Abdeckscheibe mit einer ersten wärmeleitfähigen Schicht versehen, die zu einem Innenraum der Beleuchtungseinrichtung hin orientiert ist. Die Abdeckscheibe weist eine zweite Schicht auf, die zu einem Außenraum der Beleuchtungseinrichtung orientiert ist. Die erste Schicht hat einen geringeren Wärmewiderstand als die zweite Schicht. Vorteilhaft kann mittels der ersten wärmeleitfähigen Schicht die flächige Wärmeeinleitung in die Abdeckscheibe stattfinden. In an advantageous embodiment, the cover plate is provided with a first thermally conductive layer, which is oriented towards an interior of the illumination device. The cover plate has a second layer, which is oriented to an outside space of the illumination device. The first layer has a lower thermal resistance than the second layer. Advantageously, by means of the first thermally conductive layer, the surface heat introduction into the cover disc take place.
In einer vorteilhaften Weiterbildung ist die erste Schicht ein wärmeleitfähiger Lack, welcher auf eine Innenseite der Abdeckscheibe aufgebracht ist. Durch diesen wärmeleitfähigen Lack kann die flächige Wärmeeinleitung kostengünstig erreicht werden.In an advantageous development, the first layer is a thermally conductive paint, which is applied to an inner side of the cover. By this thermally conductive paint, the area heat introduction can be achieved inexpensively.
In einer vorteilhaften Ausführungsform weist das Koppelmittel eine Anzahl von Koppelpunkten mit der Abdeckscheibe auf. Hierdurch wird vorteilhaft erreicht, dass sich eine geringe Wärmedifferenz zwischen einem Innenraum und einem Außenraum der Beleuchtungseinrichtung ergibt. In an advantageous embodiment, the coupling means has a number of crosspoints with the cover. In this way, it is advantageously achieved that there is a small difference in heat between an interior and an exterior space of the illumination device.
In einer vorteilhaften Ausführungsform weist das Koppelmittel eine linienförmige Koppelung mit der Abdeckscheibe auf. Hierdurch wird die flächige Einleitung und geringe Temperaturdifferenz zwischen Innen- und Außenraum der Beleuchtungseinrichtung erreicht.In an advantageous embodiment, the coupling means on a linear coupling with the cover. As a result, the surface introduction and low temperature difference between the interior and exterior of the lighting device is achieved.
Weitere Merkmale, Anwendungsmöglichkeiten und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen der Erfindung, die in den Figuren der Zeichnung dargestellt sind. Dabei bilden alle beschriebenen oder dargestellten Merkmale für sich oder in beliebiger Kombination den Gegenstand der Erfindung, unabhängig von ihrer Zusammenfassung in den Patentansprüchen oder deren Rückbeziehung sowie unabhängig von ihrer Formulierung beziehungsweise Darstellung in der Beschreibung beziehungsweise in der Zeichnung. Es werden für funktionsäquivalente Größen und Merkmale in allen Figuren, auch bei unterschiedlichen Ausführungsformen die gleichen Bezugszeichen verwendet.Other features, applications and advantages of the invention will become apparent from the following description of embodiments of the invention, which are illustrated in the figures of the drawing. All described or illustrated features, alone or in any combination form the subject matter of the invention, regardless of their summary in the claims or their dependency and regardless of their formulation or representation in the description or in the drawing. The same reference numerals are used for functionally equivalent quantities and features in all figures, even in different embodiments.
Nachfolgend werden beispielhafte Ausführungsformen der Erfindung unter Bezugnahme auf die Zeichnung erläutert. In der Zeichnung zeigen:Hereinafter, exemplary embodiments of the invention will be explained with reference to the drawings. In the drawing show:
In der Lichtaustrittsrichtung
In einem dem Körper
Im Bereich
In
In einer weiteren Ausführungsform weist der Wärmeübertrager
Bedingt durch die Aerodynamik des Fahrzeugs entstehen an unterschiedlichen Stellen der Abdeckscheibe
Der Kontaktbereich zwischen der Abdeckscheibe
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES 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 of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102011089945 A1 [0004] DE 102011089945 A1 [0004]
- DE 102012219162 A1 [0005] DE 102012219162 A1 [0005]
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102015202358.3A DE102015202358A1 (en) | 2015-02-10 | 2015-02-10 | Lighting device for a motor vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015202358.3A DE102015202358A1 (en) | 2015-02-10 | 2015-02-10 | Lighting device for a motor vehicle |
Publications (1)
Publication Number | Publication Date |
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DE102015202358A1 true DE102015202358A1 (en) | 2016-08-11 |
Family
ID=56498242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102015202358.3A Withdrawn DE102015202358A1 (en) | 2015-02-10 | 2015-02-10 | Lighting device for a motor vehicle |
Country Status (1)
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DE (1) | DE102015202358A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011089945A1 (en) | 2011-12-27 | 2013-06-27 | Automotive Lighting Reutlingen Gmbh | Headlamp for motor car, has driving unit that drives electro-thermal transducer to releases heat in direction of light source, so that temperature in interior of housing is increased |
DE102012219162A1 (en) | 2012-10-19 | 2014-05-08 | Automotive Lighting Reutlingen Gmbh | Motor vehicle headlight with light source and a cooling device for the light source |
-
2015
- 2015-02-10 DE DE102015202358.3A patent/DE102015202358A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011089945A1 (en) | 2011-12-27 | 2013-06-27 | Automotive Lighting Reutlingen Gmbh | Headlamp for motor car, has driving unit that drives electro-thermal transducer to releases heat in direction of light source, so that temperature in interior of housing is increased |
DE102012219162A1 (en) | 2012-10-19 | 2014-05-08 | Automotive Lighting Reutlingen Gmbh | Motor vehicle headlight with light source and a cooling device for the light source |
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Legal Events
Date | Code | Title | Description |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |