DE102009005635A1 - Lighting device e.g. LED light source, for e.g. rear area of vehicle, has reflector segments including surface characteristics such that light beam is reflected at reflector segments, where beam is deflected within given solid angle region - Google Patents
Lighting device e.g. LED light source, for e.g. rear area of vehicle, has reflector segments including surface characteristics such that light beam is reflected at reflector segments, where beam is deflected within given solid angle region Download PDFInfo
- Publication number
- DE102009005635A1 DE102009005635A1 DE102009005635A DE102009005635A DE102009005635A1 DE 102009005635 A1 DE102009005635 A1 DE 102009005635A1 DE 102009005635 A DE102009005635 A DE 102009005635A DE 102009005635 A DE102009005635 A DE 102009005635A DE 102009005635 A1 DE102009005635 A1 DE 102009005635A1
- Authority
- DE
- Germany
- Prior art keywords
- reflector segment
- reflector
- segment
- lighting device
- light source
- 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
-
- 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
- B60Q1/2696—Mounting of devices using LEDs
-
- 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
- F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
-
- 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
- F21S41/335—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with continuity at the junction between adjacent areas
-
- 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/338—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having surface portions added to its general concavity
-
- 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
- F21V7/0025—Combination of two or more reflectors for a single light source
-
- 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
- F21V7/04—Optical design
- F21V7/09—Optical design with a combination of different curvatures
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Die Erfindung betrifft eine Beleuchtungsvorrichtung für Fahrzeuge mit einer Lichtquelle und einem der Lichtquelle zugeordneten Reflektor, wobei die Lichtquelle in einem zentralen Bereich des Reflektors angeordnet ist und wobei der Reflektor einen sich einem zentralen Bereich anschließenden parabelförmigen Flächenabschnitt umfasst.The The invention relates to a lighting device for vehicles with a light source and a reflector associated with the light source, the light source being in a central area of the reflector is arranged and wherein the reflector is a central Area adjoining parabolic surface section includes.
Aus
der
Aufgabe der vorliegenden Erfindung ist es daher, eine Beleuchtungsvorrichtung für Fahrzeuge derart weiterzubilden, dass auf einfache Weise der Wirkungsgrad des Reflektors erhöht wird, wobei insbesondere ein größerer Lichtanteil der Lichtquelle nutzbar ist.task The present invention is therefore an illumination device for vehicles in such a way that easy on Way the efficiency of the reflector is increased, wherein in particular a larger proportion of light of the light source usable is.
Zur Lösung der Aufgabe ist die Erfindung in Verbindung mit dem Oberbegriff des Patentanspruchs 1 dadurch gekennzeichnet, dass der parabelförmige Flächenabschnitt in einem ersten Reflektorsegment und/oder in einem zweiten Reflektorsegment angeordnet ist, das eine erste Randkante mit einem dritten Reflektorsegment und/oder an einer zweiten Randkante mit einem vierten Reflektorsegment verbunden ist, wobei das dritte Reflektorsegment und/oder das vierte Reflektorsegment zumindest teilweise einen solchen Flächenverlauf aufweist, dass das an dem dritten Reflektorsegment bzw. vierten Reflektorsegment reflektierte Lichtbündel in einem vorgegebenen Raumwinkelbereich umgelenkt wird.to Solution to the problem is the invention in connection with the preamble of claim 1, characterized in that the parabolic surface portion in a first Reflector segment and / or arranged in a second reflector segment is that a first peripheral edge with a third reflector segment and / or at a second peripheral edge with a fourth reflector segment is connected, wherein the third reflector segment and / or the fourth Reflector segment at least partially such a surface course has that on the third reflector segment or fourth Reflector segment reflected light bundles in a given Solid angle range is deflected.
Der besondere Vorteil der Erfindung besteht darin, dass das auf eine Fläche eines Reflektorsegmentes bzw. des Reflektors auftreffende Licht derart reflektiert wird, dass das reflektierte Lichtbündel in einem vorgegebenen Raumwinkelbereich, das heißt unter solchen verkleinerten Ablenkwinkeln, umgelenkt wird, dass alle reflektierten Lichtstrahlen für die Lichtverteilung einer Signalfunktion genutzt werden können. Der Wirkungsgrad des Reflektors kann somit wesentlich erhöht werden. Somit wird der gesamte auf den Reflektor treffende Lichtstrom für die Signalfunktion genutzt. Vorzugsweise verläuft die Reflektorfläche derart, dass das an der Reflektorfläche reflektierte Lichtbündel in einem Winkelbereich von maximal 20° zu einer optischen Achse des Reflektors umgelenkt wird.Of the particular advantage of the invention is that on a Surface of a reflector segment or the reflector incident Light is reflected such that the reflected light beam in a given solid angle range, that is below deflected such deflected angles, that all reflected Light rays for the light distribution of a signal function can be used. The efficiency of the reflector can thus be increased significantly. Thus, the entire on the reflector striking luminous flux for the signal function used. Preferably, the reflector surface extends such that the light beam reflected at the reflector surface in an angular range of maximum 20 ° to an optical Axis of the reflector is deflected.
Nach einer Weiterbildung der Erfindung ist der Reflektor bzw. ein vorderer Rand des Reflektors rechteckförmig ausgebildet, so dass ein gegenüberliegendes erstes und zweites Reflektorsegment und ein gegenüberliegendes drittes und viertes Reflektorsegment gebildet werden. Das dritte Reflektorsegment und das vierte Reflektorsegment schließen sich jeweils unter Bildung einer Randkante in einem stumpfen Winkel zu dem ersten Reflektorsegment und dem zweiten Reflektorsegment an. Die dritten und vierten Reflektorsegmente verlaufen unter einem relativ steilen Winkel zu der optischen Achse und dienen als Auszugsfläche beim Entformen des Reflektors aus dem Spritzgießwerkzeug. Dadurch, dass das dritte und/oder vierte Reflektorsegment jeweils einen bogenförmigen und/oder kreisbogenförmigen Flächenab schnitt aufweisen, der das auftreffende Licht in dem vorgegebenen Winkelbereich umlenkt, kann der gesamte auf das dritte bzw. vierte Reflektorsegment auftreffende Lichtanteil für eine Signalfunktion genutzt werden.To a development of the invention is the reflector or a front Edge of the reflector formed rectangular, so that an opposite first and second reflector segment and an opposite third and fourth reflector segment be formed. The third reflector segment and the fourth reflector segment close in each case to form a marginal edge in an obtuse angle to the first reflector segment and the second Reflector segment on. The third and fourth reflector segments run at a relatively steep angle to the optical axis and serve as an extract surface when removing the reflector from the Injection mold. Because the third and / or fourth Reflector segment each an arcuate and / or circular arc Flächenab section comprising the incident light in the predetermined angular range deflects, the entire on the third or fourth reflector segment incident light used for a signal function become.
Nach einer Weiterbildung der Erfindung verläuft der bogenförmige Flächenabschnitt des dritten bzw. vierten Reflektorsegmentes in einem Winkelbereich zwischen 1,5° und 8° zu einer Ebene (Horizontalebene oder Vertikalebene). Der bogenförmige Flächenabschnitt weist somit eine Krümmung mit einem relativ großen Krümmungsradius auf, der aufgrund des axialen Abstandes des bogenförmigen Flächenabschnittes zu der Lichtquelle eine relativ flache Umlenkung des auf dasselbe treffenden Lichtbündels ermöglicht. Der bogenförmige Flächenabschnitt des dritten bzw. vierten Reflektorsegmentes schließt sich in Lichtabstrahlrichtung vorzugsweise an einen parabelförmigen Flächenabschnitt derselben an. Hierdurch ist gewährleistet, dass der im achsnahen Teil parabelförmigen Flächenabschnitt des Reflektors auf denselben auftreffende Lichtanteil im Wesentlichen parallel zur optischen Achse und ein im achsfernen Teil bogenförmigen Flächenabschnitt des Reflektors auftreffender Lichtanteil unter einem relativ flachen Winkel (Winkelbereich von maximal 20°, vorzugsweise 15° zur optischen Achse) umgelenkt wird.To a development of the invention extends the arcuate Surface portion of the third and fourth reflector segment in an angular range between 1.5 ° and 8 ° a plane (horizontal plane or vertical plane). The arched Surface section thus has a curvature a relatively large radius of curvature, the due to the axial distance of the arcuate surface portion to the light source, a relatively flat deflection of the same allowing the light beam. The arched Surface portion of the third and fourth reflector segment closes preferably in light emission direction a parabolic surface portion thereof at. This ensures that the near-axis Part parabolic surface portion of the reflector incident on the same amount of light substantially parallel to the optical axis and an arc-shaped in the off-axis part Surface portion of the reflector incident light component at a relatively shallow angle (angular range of maximum 20 °, preferably 15 ° to the optical axis) is deflected.
Nach einer Weiterbildung der Erfindung kann das dritte und vierte Reflektorsegment optikfrei oder mit in Lichtabstrahlrichtung verlaufenden streifenförmigen Optikelementen versehen sein. Durch die streifenförmigen Optikelemen te kann zusätzliche eine seitliche Streuung des auftreffenden Lichtanteils erzielt werden.According to a development of the invention, the third and fourth reflector segment optically free or be provided with in the light emission direction strip-shaped optical elements. Through the strip-shaped Optikelemen te additional lateral scattering of the incident light component can be achieved.
Nach einer Weiterbildung der Erfindung ist die Lichtquelle als ein LED-Leuchtelement (LED-Chip) ausgebildet, das in einer hinteren Randebene, die quer zur optischen Achse verläuft, angeordnet ist. Das LED-Leuchtelement kann auf einer Trägerplatte angeordnet sein, an der sich das erste, zweite, dritte und vierte Reflektorsegment anschließen. Alternativ können das erste und zweite Reflektorsegment einstückig miteinander verbunden sein, so dass sich eine durchgehende parabelförmige Fläche ergibt.To A development of the invention is the light source as an LED light element (LED chip) formed in a rear edge plane transverse to the optical Axis runs, is arranged. The LED light element can be arranged on a support plate at which the connect first, second, third and fourth reflector segment. Alternatively, the first and second reflector segments be integrally connected, so that a continuous parabolic surface results.
Weitere Vorteile der Erfindung ergeben sich aus den weiteren Unteransprüchen.Further Advantages of the invention will become apparent from the other dependent claims.
Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnungen näher erläutert.One Embodiment of the invention will be described below explained in more detail in the drawings.
Es zeigen:It demonstrate:
Eine
Beleuchtungsvorrichtung
Im
vorliegenden Ausführungsbeispiel umfasst die Beleuchtungsvorrichtung
Der
Reflektor
Die
Umrandungsfläche
Der
innere Reflektor
Das
erste Reflektorsegment
Nach
einer nicht dargestellten Ausführungsform der Erfindung
können das erste Reflektorsegment
Der
innere Reflektor
Wie
aus den
Wie
aus
Der
parabelförmige Flächenabschnitt
Wie
aus
Der
bogenförmige Flächenabschnitt
Die
Krümmung des bogenförmigen Flächenabschnitts
Das
obere Reflektorsegment
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 10218662 A1 [0002] DE 10218662 A1 [0002]
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009005635.1A DE102009005635B4 (en) | 2009-01-21 | 2009-01-21 | Lighting device for vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009005635.1A DE102009005635B4 (en) | 2009-01-21 | 2009-01-21 | Lighting device for vehicles |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102009005635A1 true DE102009005635A1 (en) | 2010-07-22 |
DE102009005635B4 DE102009005635B4 (en) | 2020-01-30 |
Family
ID=42263013
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102009005635.1A Active DE102009005635B4 (en) | 2009-01-21 | 2009-01-21 | Lighting device for vehicles |
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DE (1) | DE102009005635B4 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102588885A (en) * | 2012-02-22 | 2012-07-18 | 毛有强 | Reflector with high utilization coefficient of light fixture and light fixture thereof |
EP3385608A1 (en) * | 2017-03-16 | 2018-10-10 | HELLA GmbH & Co. KGaA | Illumination device for vehicles |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0031211B1 (en) * | 1979-12-22 | 1984-10-03 | LUCAS INDUSTRIES public limited company | Motor vehicle lamp reflector |
DE3531223A1 (en) * | 1985-08-31 | 1987-03-05 | Bosch Gmbh Robert | HEADLIGHTS, IN PARTICULAR RECTANGULAR HEADLIGHTS, FOR LOW BEAM LIGHTS OF MOTOR VEHICLES |
US4740871A (en) * | 1985-11-15 | 1988-04-26 | Cibie Projecteurs | Dual-purpose signal lamp for a vehicle |
DE10218662A1 (en) | 2002-04-26 | 2004-01-22 | Hella Kg Hueck & Co. | Reflector for a motor vehicle signal light especially a tail light, comprises two tangentially joined parts of differing reflector geometry |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8105535A (en) * | 1981-12-09 | 1983-07-01 | Philips Nv | REFLEKTOR. |
JPS6258502A (en) * | 1985-08-10 | 1987-03-14 | スタンレー電気株式会社 | Compound reflecting mirror for head lamp |
US5045982A (en) * | 1989-03-17 | 1991-09-03 | Whelen Technologies, Inc. | Wide angle warning light |
US6048084A (en) * | 1997-04-01 | 2000-04-11 | The Coleman Company, Inc. | Illumination reflector for area projection |
-
2009
- 2009-01-21 DE DE102009005635.1A patent/DE102009005635B4/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0031211B1 (en) * | 1979-12-22 | 1984-10-03 | LUCAS INDUSTRIES public limited company | Motor vehicle lamp reflector |
DE3531223A1 (en) * | 1985-08-31 | 1987-03-05 | Bosch Gmbh Robert | HEADLIGHTS, IN PARTICULAR RECTANGULAR HEADLIGHTS, FOR LOW BEAM LIGHTS OF MOTOR VEHICLES |
US4740871A (en) * | 1985-11-15 | 1988-04-26 | Cibie Projecteurs | Dual-purpose signal lamp for a vehicle |
DE10218662A1 (en) | 2002-04-26 | 2004-01-22 | Hella Kg Hueck & Co. | Reflector for a motor vehicle signal light especially a tail light, comprises two tangentially joined parts of differing reflector geometry |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102588885A (en) * | 2012-02-22 | 2012-07-18 | 毛有强 | Reflector with high utilization coefficient of light fixture and light fixture thereof |
CN102588885B (en) * | 2012-02-22 | 2013-12-11 | 毛有强 | Reflector with high utilization coefficient of light fixture and light fixture thereof |
EP3385608A1 (en) * | 2017-03-16 | 2018-10-10 | HELLA GmbH & Co. KGaA | Illumination device for vehicles |
US10253942B2 (en) | 2017-03-16 | 2019-04-09 | HELLA GmbH & Co. KGaA | Lighting device for vehicles |
Also Published As
Publication number | Publication date |
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DE102009005635B4 (en) | 2020-01-30 |
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