DE202004016669U1 - Motor vehicle light especially a brake light has two light conductors connected to light emitting diode light source and cooling bodies - Google Patents
Motor vehicle light especially a brake light has two light conductors connected to light emitting diode light source and cooling bodies Download PDFInfo
- Publication number
- DE202004016669U1 DE202004016669U1 DE202004016669U DE202004016669U DE202004016669U1 DE 202004016669 U1 DE202004016669 U1 DE 202004016669U1 DE 202004016669 U DE202004016669 U DE 202004016669U DE 202004016669 U DE202004016669 U DE 202004016669U DE 202004016669 U1 DE202004016669 U1 DE 202004016669U1
- Authority
- DE
- Germany
- Prior art keywords
- light
- motor vehicle
- heat sink
- brake
- light guide
- 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.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/30—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating rear of vehicle, e.g. by means of reflecting surfaces
- B60Q1/302—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating rear of vehicle, e.g. by means of reflecting surfaces mounted in the vicinity, e.g. in the middle, of a rear window
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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
- 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
- F21S43/13—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
- F21S43/15—Strips of light sources
-
- 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
- F21S43/235—Light guides
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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
- 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
-
- 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
-
- 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
- F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
-
- 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
- F21S45/30—Ventilation or drainage of lighting devices
- F21S45/37—Ventilation or drainage of lighting devices specially adapted for signal lamps
-
- 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]
Abstract
Description
Die vorliegende Erfindung betrifft eine Kraftfahrzeugleuchte, insbesondere eine Bremsleuchte, mit mindestens einem stabförmigen Lichtleiter und mindestens einer Lichtquelle, deren Licht stirnseitig in den Lichtleiter eingekoppelt und aus dem Lichtleiter über eine umfangsseitige Austrittsfläche ausgekoppelt wird.The The present invention relates to a motor vehicle lamp, in particular a brake light, with at least one rod-shaped light guide and at least a light source, the light of which is coupled on the face side into the light guide and out of the light guide a peripheral exit surface is decoupled.
Bei einer bekannten Bremsleuchte dieser Art ist vor beiden Stirnseiten des Lichtleiters jeweils eine Lichtquelle in Form einer LED angeordnet. Der Lichtleiter hat umfangsseitig eine Lichtaustrittsfläche und dieser gegenüberliegend eine gezahnte Oberfläche, um das an beiden Stirnseiten in den Lichtleiter eingekoppelte Licht in Richtung Lichtaustrittsfläche abzulenken. Trotz optimierter Zahnanzahl und Zahngeometrie nimmt bei langen Bremsleuchten die Leuchtstärke der Bremsleuchte zur Mitte hin aufgrund der stirnseitigen Lichteinkopplung deutlich ab, was vom Betrachter als störend empfunden wird. Außerdem sind bei einer Lichtleiterlänge von z.B. 50cm separate elektrische Zuleitungen für beide Lichtquellen erforderlich.at A known brake light of this type is in front of both ends each of the light guide arranged a light source in the form of an LED. The light guide has a light exit surface on the circumference and this opposite a serrated surface to the light coupled into the light guide on both ends towards the light exit surface distract. Despite the optimized number of teeth and tooth geometry with long brake lights, the brightness of the brake light towards the center due to the front light coupling from what from the viewer as disturbing is felt. Also are with an optical fiber length from e.g. 50cm separate electrical supply lines required for both light sources.
Demgegenüber ist es die Aufgabe der vorliegenden Erfindung, eine Bremsleuchte der eingangs genannten Art weiter zu verbessern.In contrast is it the object of the present invention, a brake light to further improve the type mentioned at the beginning.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass zwei stabförmige Lichtleiter in Längsrichtung der Kraftfahrzeugleuchte hintereinander angeordnet sind und dass die mindestens eine Lichtquelle zwischen den beiden Lichtleitern angeordnet ist.This The object of the invention solved, that two rod-shaped Longitudinal light guide the motor vehicle lamp are arranged one behind the other and that the at least one light source between the two light guides is arranged.
Diese erfindungsgemäße Bremsleuchte hat den Vorteil, dass eine Abnahme der Leuchtstärke von der Mitte nach außen vom menschlichen Auge besser als umgekehrt akzeptiert wird. Auch wenn jedem Lichtleiter mindestens eine Lichtquelle zugeordnet ist, wird erfindungsgemäß nur eine zentrale elektrische Zuleitung benötigt.This brake light according to the invention has the advantage that the luminosity decreases from the center to the outside human eye is accepted better than vice versa. Even if at least one light source is assigned to each light guide according to the invention only one central electrical supply line required.
Zur Kühlung einer Leiterplatte, auf der im Fall einer LED auch deren Vorwiderstand vorgesehen sein kann, kann ein einziger Kühlkörper vorgesehen sein, mit dem eine bzw. jede Leiterplatte der einen Lichtquelle bzw. der Lichtquellen in thermischem Kontakt steht. Bei besonders bevorzugten Ausführungsformen der Erfindung ist jedoch jedem stabförmigen Lichtleiter ein Kühlkörper zugeordnet, mit dem eine Leiterplatte, welche mindestens eine Lichtquelle, insbesondere alle Lichtquellen, des jeweiligen Lichtleiters trägt, in thermischem Kontakt steht.to cooling a circuit board, on which in the case of an LED also its series resistor can be provided, a single heat sink can be provided with which one or each circuit board of the one light source or light sources is in thermal contact. In particularly preferred embodiments However, the invention is associated with a heat sink for each rod-shaped light guide, with a circuit board, which has at least one light source, in particular all light sources, the respective light guide carries, in thermal Contact is there.
Bevorzugt sind die beiden Leiterplatten an dem einen bzw. an dem jeweiligen Kühlkörper klemmend gehalten. Dazu können vorteilhaft Federklammern vorgesehen sein, welche die Leiterplatten an den jeweiligen Kühlkörper klemmen und gleichzeitig den Lichtleiter zur Leiterplatte zentrieren. Beispielsweise kann in der Federklammer ein Loch für den Lichtleiter vorgesehen sein, durch das der Lichtleiter bei geklemmter Federklammer genau vor der Lichtquelle positioniert ist.Prefers are the two circuit boards on one or on the respective Clamping heat sink held. You can do this advantageous spring clips can be provided which the circuit boards clamp on the respective heat sink and at the same time center the light guide to the circuit board. For example a hole for the light guide can be provided in the spring clip through which the light guide is accurate when the spring clip is clamped is positioned in front of the light source.
Vorzugsweise sind die beiden Leiterplatten über Leitungen miteinander elektrisch leitend verbunden, so dass nur eine der beiden Leiterplatten an elektrische Zuleitungen anzuschließen ist.Preferably the two circuit boards are over Lines connected to each other in an electrically conductive manner, so that only one of the two circuit boards must be connected to electrical supply lines.
Besonders bevorzugt ist der bzw. jeder Kühlkörper in einem in Montagelage der Bremsleuchte vertikalen Konvektionskanal einer in sich geschlossenen Konvektionskanalleitung angeordnet. Die am Kühlkörper erwärmte Luft wird in der Konvektionsleitung abgekühlt, bevor sie wieder dem Kühlkörper zugeführt wird. Diese in sich geschlossenen Konvektionskanalleitung ermöglicht insbesondere einen wasserdichten Verbau der Bremsleuchte.Especially the or each heat sink is preferred in a vertical convection channel when the brake light is installed a self-contained convection duct. The air heated on the heat sink is cooled in the convection line before it is returned to the heat sink. This self-contained convection duct allows in particular a waterproof installation of the brake light.
Um den Abstand und damit den dunklen Bereich zwischen beiden Lichtleitern so gering wie möglich zu halten, sind die Kühlrippen des bzw. der Kühlkörper außerhalb des Raumes zwischen beiden Lichtleitern vorgesehen.Around the distance and thus the dark area between the two light guides as low as possible hold the cooling fins the or the heat sink outside of the space between the two light guides.
Das Bremsleuchtengehäuse weist vorteilhaft in dem dunklen Bereich zwischen beiden Lichtleitern eine Öffnung für die Spritzdüse der Heckscheibenwischeranlage auf.The Brake light housing advantageously has an opening in the dark area between the two light guides for the spray nozzle of the rear window wiper system on.
Weitere Vorteile der Erfindung ergeben sich aus der Beschreibung und der Zeichnung. Ebenso können die vorstehend genannten und die noch weiter aufgeführten Merkmale je für sich oder zu mehreren in beliebigen Kombinationen Verwendung finden. Die gezeigte und beschriebene Ausführungsform ist nicht als abschließende Aufzählung zu verstehen, sondern hat vielmehr beispielhaften Charakter für die Schilderung der Erfindung.Further Advantages of the invention result from the description and the Drawing. You can also the features mentioned above and those listed below ever for one or more can be used in any combination. The shown and described embodiment is not as a final enumeration to understand, but rather has exemplary character for the description the invention.
Es zeigen:It demonstrate:
Die
in
Die
Bremsleuchte
Jede
Leiterplatte
Wie
in
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202004016669U DE202004016669U1 (en) | 2004-10-28 | 2004-10-28 | Motor vehicle light especially a brake light has two light conductors connected to light emitting diode light source and cooling bodies |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202004016669U DE202004016669U1 (en) | 2004-10-28 | 2004-10-28 | Motor vehicle light especially a brake light has two light conductors connected to light emitting diode light source and cooling bodies |
Publications (1)
Publication Number | Publication Date |
---|---|
DE202004016669U1 true DE202004016669U1 (en) | 2004-12-23 |
Family
ID=33547502
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE202004016669U Expired - Lifetime DE202004016669U1 (en) | 2004-10-28 | 2004-10-28 | Motor vehicle light especially a brake light has two light conductors connected to light emitting diode light source and cooling bodies |
Country Status (1)
Country | Link |
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DE (1) | DE202004016669U1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005038154A1 (en) * | 2005-08-12 | 2007-02-15 | Bayerische Motoren Werke Ag | Luminaire for motor vehicles |
EP1893913A2 (en) * | 2005-06-23 | 2008-03-05 | Osram Sylvania, Inc. | Replaceable vehicle lamp with led light sources |
WO2009048436A1 (en) | 2007-10-12 | 2009-04-16 | HELLA LUX SLOVENIJA, Proizvodnja svetlobne opreme za motorna in druga vozila, d.o.o. | Light, specially for motor vehicles |
DE102006035842B4 (en) * | 2005-09-09 | 2014-09-18 | Truck-Lite Europe Gmbh | Vehicle lamp with a one-piece optical fiber aperture unit |
-
2004
- 2004-10-28 DE DE202004016669U patent/DE202004016669U1/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1893913A2 (en) * | 2005-06-23 | 2008-03-05 | Osram Sylvania, Inc. | Replaceable vehicle lamp with led light sources |
EP1893913A4 (en) * | 2005-06-23 | 2010-04-28 | Osram Sylvania Inc | Replaceable vehicle lamp with led light sources |
DE102005038154A1 (en) * | 2005-08-12 | 2007-02-15 | Bayerische Motoren Werke Ag | Luminaire for motor vehicles |
WO2007019934A1 (en) | 2005-08-12 | 2007-02-22 | Bayerische Motoren Werke Aktiengesellschaft | Light for motor vehicles |
US7703960B2 (en) | 2005-08-12 | 2010-04-27 | Bayerische Motoren Werke Aktiengesellschaft | Light for motor vehicles |
DE102006035842B4 (en) * | 2005-09-09 | 2014-09-18 | Truck-Lite Europe Gmbh | Vehicle lamp with a one-piece optical fiber aperture unit |
WO2009048436A1 (en) | 2007-10-12 | 2009-04-16 | HELLA LUX SLOVENIJA, Proizvodnja svetlobne opreme za motorna in druga vozila, d.o.o. | Light, specially for motor vehicles |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 20050127 |
|
R156 | Lapse of ip right after 3 years |
Effective date: 20080501 |