EP1362740B1 - Vehicle lamp - Google Patents
Vehicle lamp Download PDFInfo
- Publication number
- EP1362740B1 EP1362740B1 EP03101294A EP03101294A EP1362740B1 EP 1362740 B1 EP1362740 B1 EP 1362740B1 EP 03101294 A EP03101294 A EP 03101294A EP 03101294 A EP03101294 A EP 03101294A EP 1362740 B1 EP1362740 B1 EP 1362740B1
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- EP
- European Patent Office
- Prior art keywords
- reflectors
- reflector
- vehicle lamp
- fact
- light sources
- 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
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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
- 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
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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]
Definitions
- the invention relates to a vehicle lamp according to the preamble of patent claim 1.
- Vehicle lights especially for motor vehicles, are increasingly housed in packaged systems that are clear or partially clear, i. have optically inactive cover, or light exit surfaces. This raises the demand to produce a desired depending on the application and the legal requirements sufficient light distribution and this with a modern lighting design that z. B. can recognize the technical structures of the lamp through the cover or light exit glass to connect.
- the use of a multiplicity of miniaturized light sources in conjunction with a reflector ensemble, in particular for rear lights or brake lights, has been proposed in recent developments.
- the light sources are arranged in a line, wherein they each stand in the focal point of an associated paraboloid reflector section.
- a vehicle lamp in which at least one light source is arranged to a reflector so that a central light source axis of the light source is not parallel to a main emission of the reflector.
- a light-emitting diode can be arranged laterally by a partially parabolic reflector so that the central axis of the light beam emitted by it is directed obliquely opposite the main emission direction of the reflector.
- the reflectors By the inclined arrangement of the light sources to the reflectors, however, the majority of the light emitted by a light source strikes the associated reflector and is emitted by this as a homogeneous, in case the light source in the focus of a parabolic reflector, approximately parallel light beam.
- the reflectors may be designed so that the solid angle ranges in which the individual reflectors reflect the light of the associated light source at least partially overlap each other. As a result, the homogeneity of the radiation in the edge regions can be improved by superposition of the emitted light bundles.
- the disadvantage of the known luminaire is that the emitted light bundles overlap sufficiently by the overlapping solid angle ranges only at some distance from the reflectors, so that the scattering effect, in particular in the near range, is not optimized. Furthermore, the utilization of the available reflector surfaces and thus the lighting efficiency of the lamp is not optimized.
- a vehicle lamp having a plurality of light sources and a plurality of reflectors is known.
- the light sources are arranged as light-emitting diodes on a common carrier plate.
- the reflectors are arranged inclined to the plane of extension of the light sources, so that the light incident on the reflectors is reflected at a deflection angle in the direction of a main emission direction.
- the use of the reflection surface of several adjacent reflectors to reflect the light of a single light source is not provided.
- a vehicle lamp with a plurality of light sources and a plurality of reflectors wherein the light emitted by the light sources is reflected at a deflection angle in the direction of a main emission direction from the respective reflectors.
- the reflectors are formed partially parabolic, each light source is associated with a reflector. The use of the reflection surface of several adjacent reflectors to reflect the light of a single light source is not provided.
- Object of the present invention is therefore to propose a modern design requirements vehicle lamp with a plurality of light sources and reflectors, in which a selectable, the legal requirements corresponding light distribution is realized with improved lighting efficiency.
- the invention has the features of claim 1.
- each light source in addition to their respective associated main reflectors is still associated with the adjacent secondary reflectors, these immediately adjacent reflectors (except at the edge of the reflector ensemble each light source has a right and a left side associated immediate neighbor reflector) used to the required light distribution to create.
- the reflector ensemble is geometrically designed or arranged such that the neighboring or secondary reflectors are also illuminated.
- Each light source uses the neighboring reflectors as external areas of the legal light distribution. This leads to a much larger spread of each individual light source compared to the illumination of only one reflector.
- the scattering in the overlapping areas is superimposed, so that the scattering behavior adds up there.
- the scattering is over the entire emission range, i. taken together in the near field and in the far field more effective.
- the resulting lighting efficiency is overall significantly greater compared to the sum of the efficiency of individual reflectors, each with a light source.
- the light sources are designed as light-emitting diodes.
- Light-emitting diodes are particularly suitable for use in the vehicle lamp. They are small, inexpensive and economical in energy consumption. In addition, they are available in selectable emission colors, eg in red for use as brake light. to disposal. They therefore fulfill particularly the requirements with regard to a compact design in connection with a modern lighting design and a favorable energy consumption.
- the reflectors are integrally connected to one another and the light sources are arranged on a common carrier plate.
- the reflectors are at least partially paraboloidal.
- the reflectors are paraboloid-shaped, can be achieved in a simple manner bundled in the direction of a light exit surface radiation.
- the light sources are respectively positioned in the focal point of the associated main reflector.
- the emitted light beam is almost perfectly parallelized. Thereby the light bundling can be further improved.
- a parallel beam is also advantageous in order to achieve targeted radiation effects in interaction with any downstream optically active elements. As a result, the possible uses of this Anlagenngattung be extended.
- the deflection angle of the radiation between the optical axes of the light sources and the main emission directions of the reflectors is 90 °.
- the 90 ° orientation results in a particularly simple construction of the lamp. This alignment can also be advantageously integrated into a particularly compact design.
- the reflectors have optically active elements by means of which a predetermined light distribution of the reflected radiation is generated by the light sources located at the focus of the associated main reflectors, on the main reflectors and on the secondary reflectors incident radiation.
- the optically active elements may be formed as a faceted surface structure. They can also be designed as a prism-like surface structure.
- the optically active elements provide directly on the reflector surface for the required, or desired light distribution. As a result, no additional lenses or the like to be arranged between the reflector and a light exit surface are necessary.
- the optically active elements in the edge regions of the reflectors may differ from the optically active elements in the core regions located between the edge regions be designed to illuminate the overlapping illumination by the light sources, which are positioned on the one hand in the focal point of their associated lamp, on the other hand, but also illuminate their neighboring reflectors, which are not in focus, so that a broadly directed, uniform radiation over the individual Reflector limitations is also generated.
- the main emission directions of the reflectors are approximately parallel to one another.
- the parallelism of the main emission directions results in a particularly uniform and uniform radiation pattern of the luminaire ensemble.
- the light sources are followed by optical means for generating a predetermined emission characteristic.
- a vehicle lamp 1 essentially consists of a plurality of light sources 2 and a plurality of reflectors 3 assigned to the light sources 2.
- the light sources 2 are advantageously designed as light-emitting diodes.
- the light emitting diodes 2 each sit on a diode base 4, in which the electrical connections are integrated.
- the light-emitting diodes 2 are advantageously mounted on a (not shown) common carrier plate in a manner known in principle.
- the light sources 2 are arranged with their optical axes 11 in a directed as a right angle deflection angle 5 to a main emission direction 6 of the reflectors 3.
- the reflectors 3 have a partially paraboloid-shaped reflector surface 7.
- the light sources 2 are respectively positioned in the focal points 8 of their main reflectors 3 assigned to them, so that approximately all the light beams 9 striking the main reflector 3 are directed from the main reflector surface 7 as parallel aligned light beams 9 'in the main emission direction 6 are neglected (neglecting aberrations such as spherical aberration). In a simplistic way, in Fig. 2 such a generated light beam 10 is shown.
- the reflector surface 7 is configured with optically active elements (not shown), for example a prism structure, so that the light beam 10 actually has a reflection characteristic scattered around the main emission direction 6 in accordance with the light distribution to be achieved.
- Fig. 1 is a line-shaped arrangement of the light sources 2 and 2 'and the reflectors 3, and 3' shown.
- the view shows the light sources 2, 2 'from their rear bottom side of their base 4.
- Each lying in the interior of the line-shaped light source 2 are assigned in addition to its associated main reflector 3, two auxiliary reflectors 3 '.
- the respective light source 2 illuminates, in addition to its associated main reflector 3, the secondary reflectors 3 ', so that, apart from a reflection distributed around the main emission direction 6, a reflection about corresponding secondary emission directions 6' is also produced.
- a main emission direction 6 and two secondary emission directions 6 ' are illustrated. Accordingly, the adjacent light sources 2 'function as secondary light sources for the main reflector 3, etc.
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- 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)
Description
Die Erfindung betrifft eine Fahrzeugleuchte nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a vehicle lamp according to the preamble of patent claim 1.
Fahrzeugleuchten, insbesondere für Kraftfahrzeuge, werden zunehmend in gehäusten Systemen untergebracht, die glasklare oder in Teilen klare, d.h. optisch inaktive Abdeckscheiben, bzw. Lichtaustrittsflächen aufweisen. Dabei stellt sich die Forderung eine je nach Anwendung gewünschte und den gesetzlichen Bestimmungen genügende Lichtverteilung zu erzeugen und diese mit einem modernen Leuchtendesign, dass z. B. die technischen Strukturen der Leuchte durch die Abdeckscheibe oder Lichtaustrittsscheibe erkennen lässt, zu verbinden.Vehicle lights, especially for motor vehicles, are increasingly housed in packaged systems that are clear or partially clear, i. have optically inactive cover, or light exit surfaces. This raises the demand to produce a desired depending on the application and the legal requirements sufficient light distribution and this with a modern lighting design that z. B. can recognize the technical structures of the lamp through the cover or light exit glass to connect.
Weiterhin wird in den neuesten Entwicklungen die Verwendung einer Vielzahl von miniaturisierten Lichtquellen in Verbindung mit einem Reflektorensemble, insbesondere für Heck- oder Bremsleuchten vorgeschlagen. Beispielsweise sind die Lichtquellen zeilenförmig angeordnet, wobei sie jeweils im Brennpunkt eines ihnen zugehörigen paraboloidförmigen Reflektorabschnitts stehen. Dadurch erzeugen sie jeweils ein näherungsweise parallel abgestrahltes Lichtbündel im Kernbereich des jeweiligen Reflektors. Wichtig ist dabei eine möglichst homogene, d.h. für den entgegen der Abstrahlungsrichtung schauenden Beobachter strukturlose Abstrahlung. Dazu ist es notwendig, eine möglichst effektive Streuung der Abstrahlung des gesamten Ensembles in Verbindung mit der gewünschten und je nach Verwendung erforderlichen Lichtverteilung zu erreichen.Furthermore, the use of a multiplicity of miniaturized light sources in conjunction with a reflector ensemble, in particular for rear lights or brake lights, has been proposed in recent developments. For example, the light sources are arranged in a line, wherein they each stand in the focal point of an associated paraboloid reflector section. As a result, they each produce an approximately parallel emitted light beam in the core region of the respective reflector. It is important that the most homogeneous, i. for the contrary to the direction of radiation looking observer structureless radiation. For this purpose, it is necessary to achieve the most effective possible scattering of the radiation of the entire ensemble in connection with the desired and depending on the light distribution required.
Weiterhin wird meist eine kompakte Bauform der Fahrzeugleuchten verlangt, die sich an konstruktive und designbedingte Vorgaben anpassen muss. Häufig ist es aufgrund einer vorgegeben Geometrie der Anordnung der Reflektoren in der Leuchte jedoch nicht ohne Weiteres möglich, die gewünschte Lichtverteilung zu erzeugen. Dies führt zu Einschränkungen bei der lichttechnischen Effizienz, d.h. bzgl. des Wirkungsgrades der verwendeten optischen Bauteile und / oder der Homogenität der Abstrahlung. Insbesondere werden die zur Verfügung stehenden Reflektorflächen bzw. Reflektorabschnitte der den Lichtquellen zugehörigen Reflektoren, vor allem in den Reflektorrandbereichen, bisher nicht optimal ausgenutzt. Ein hohe lichttechnische Effizienz ist aber für einen zukünftigen, aus technischer und wirtschaftlicher Sicht sinnvollen Einsatz derartiger Leuchten ausschlaggebend..Furthermore, usually a compact design of the vehicle lights is required, which must adapt to design and design requirements. Often, however, it is not readily possible due to a given geometry of the arrangement of the reflectors in the lamp, the desired light distribution to create. This leads to limitations in the lighting efficiency, ie with respect to the efficiency of the optical components used and / or the homogeneity of the radiation. In particular, the available reflector surfaces or reflector sections of the reflectors associated with the light sources, especially in the reflector edge areas, have so far not been optimally utilized. However, a high level of lighting efficiency is decisive for a future, meaningful use of such luminaires from a technical and economic point of view.
Aus der
Nachteilig wirkt sich bei der bekannten Leuchte aus, dass sich die abgestrahlten Lichtbündel durch die sich überlappenden Raumwinkelbereiche erst in einigem Abstand von den Reflektoren genügend überlappen, so dass die Streuwirkung, insbesondere im Nahbereich nicht optimiert ist. Weiterhin ist die Ausnutzung der zur Verfügung stehenden Reflektorflächen und damit die lichttechnische Effizienz der Leuchte nicht optimiert.The disadvantage of the known luminaire is that the emitted light bundles overlap sufficiently by the overlapping solid angle ranges only at some distance from the reflectors, so that the scattering effect, in particular in the near range, is not optimized. Furthermore, the utilization of the available reflector surfaces and thus the lighting efficiency of the lamp is not optimized.
Aus der
Aus der
Aufgabe der vorliegenden Erfindung ist es daher, eine den modernen Designanforderungen genügende Fahrzeugleuchte mit einer Mehrzahl von Lichtquellen und Reflektoren vorzuschlagen, bei der eine wählbare, den gesetzlichen Anforderungen entsprechende Lichtverteilung mit einer verbesserten lichttechnischen Effizienz realisiert wird.Object of the present invention is therefore to propose a modern design requirements vehicle lamp with a plurality of light sources and reflectors, in which a selectable, the legal requirements corresponding light distribution is realized with improved lighting efficiency.
Zur Lösung dieser Aufgabe weist die Erfindung die Merkmale des Anspruches 1 auf.To solve this problem, the invention has the features of claim 1.
Dadurch, dass den Lichtquellen zusätzlich zu den ihnen jeweils zugeordneten Hauptreflektoren noch die benachbarten Nebenreflektoren zugeordnet sind, werden diese jeweils unmittelbar benachbarten Reflektoren (außer am Rand des Reflektorensembles hat jede Lichtquelle einen rechtsseitig und einen linksseitig zugeordneten unmittelbaren Nachbarreflektor) mit benutzt, um die erforderliche Lichtverteilung zu erzeugen. Dazu ist das Reflektorensemble geometrisch so gestaltet, bzw. angeordnet, dass die Nachbar- bzw. Nebenreflektoren mitbeleuchtet werden. Jede Lichtquelle benutzt damit die Nachbarreflektoren als Außenbereiche der gesetzlichen Lichtverteilung. Dies führt zu einer weitaus größeren Streubreite jeder einzelnen Lichtquelle im Vergleich zu der Beleuchtung jeweils nur eines Reflektors. Die Streuung in den überlappenden Bereichen überlagert sich, so dass sich dort das Streuverhalten addiert. Die Streuung ist über den gesamten Abstrahlungsbereich, d.h. zusammengenommen im Nahfeld und im Fernfeld effektiver. Die daraus sich ergebende lichttechnische Effizienz ist insgesamt erheblich größer im Vergleich zur Summe der Effizienz von Einzelreflektoren mit jeweils einer Lichtquelle.The fact that the light sources in addition to their respective associated main reflectors are still associated with the adjacent secondary reflectors, these immediately adjacent reflectors (except at the edge of the reflector ensemble each light source has a right and a left side associated immediate neighbor reflector) used to the required light distribution to create. For this purpose, the reflector ensemble is geometrically designed or arranged such that the neighboring or secondary reflectors are also illuminated. Each light source uses the neighboring reflectors as external areas of the legal light distribution. This leads to a much larger spread of each individual light source compared to the illumination of only one reflector. The scattering in the overlapping areas is superimposed, so that the scattering behavior adds up there. The scattering is over the entire emission range, i. taken together in the near field and in the far field more effective. The resulting lighting efficiency is overall significantly greater compared to the sum of the efficiency of individual reflectors, each with a light source.
Gemäß einer bevorzugten Ausführungsform der Erfindung sind die Lichtquellen als Leuchtdioden ausgebildet sind.According to a preferred embodiment of the invention, the light sources are designed as light-emitting diodes.
Leuchtdioden eignen sich besonders für den Einsatz in der Fahrzeugleuchte. Sie sind klein, kostengünstig und sparsam im Energieverbrauch. Zudem stehen sie in wählbaren Abstrahlungsfarben, z.B. in Rot zur Verwendung als Bremslicht, zur Verfügung. Sie erfüllen daher besonders die Anforderungen, bzgl. einer kompakten Bauform in Verbindung mit einem modernen Leuchtendesign und einem günstigen Energieverbrauch.Light-emitting diodes are particularly suitable for use in the vehicle lamp. They are small, inexpensive and economical in energy consumption. In addition, they are available in selectable emission colors, eg in red for use as brake light. to disposal. They therefore fulfill particularly the requirements with regard to a compact design in connection with a modern lighting design and a favorable energy consumption.
Nach einer weiteren bevorzugten Ausführungsform der Erfindung sind die Reflektoren einstückig miteinander verbunden und die Lichtquellen auf einer gemeinsamen Trägerplatte angeordnet.According to a further preferred embodiment of the invention, the reflectors are integrally connected to one another and the light sources are arranged on a common carrier plate.
Dadurch, dass die Reflektoren einstückig miteinander verbunden sind und die Lichtquellen auf einer gemeinsamen Trägerplatte angeordnet sind, lässt sich eine besonders kompakte Bauform auf konstruktiv einfache und kostengünstige Weise verwirklichen.The fact that the reflectors are integrally connected to each other and the light sources are arranged on a common support plate, a particularly compact design can be realized in a structurally simple and cost-effective manner.
Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung sind die Reflektoren zumindest in Teilen paraboloidförmig ausgebildet.According to a further preferred embodiment of the invention, the reflectors are at least partially paraboloidal.
Dadurch, dass die Reflektoren paraboloidförmig ausgebildet sind, lässt sich auf einfache Weise eine in Richtung einer Lichtaustrittsfläche gebündelte Abstrahlung erreichen.The fact that the reflectors are paraboloid-shaped, can be achieved in a simple manner bundled in the direction of a light exit surface radiation.
Nach einer weiteren bevorzugten Ausführungsform der Erfindung sind die Lichtquellen jeweils im Brennpunkt des zugehörigen Hauptreflektors positioniert.According to a further preferred embodiment of the invention, the light sources are respectively positioned in the focal point of the associated main reflector.
Durch die Anordnung der Lichtquellen im Brennpunkt ihres jeweils zugehörigen Hauptreflektors wird, in Verbindung mit der paraboloidförmigen Reflektorausführung, das abgestrahlte Lichtbündel nahezu perfekt parallelisiert. Dadurch lässt sich die Lichtbündelung weiter verbessern. Ein paralleles Strahlenbündel ist zudem vorteilhaft, um gezielte Abstrahlungseffekte im Zusammenspiel mit ggf. nachgeordneten optisch wirksamen Elementen zu erzielen. Dadurch werden die Einsatzmöglichkeiten dieser Fahrzeugleuchtengattung erweitert.The arrangement of the light sources in the focal point of their respective main reflector, in conjunction with the paraboloid reflector design, the emitted light beam is almost perfectly parallelized. Thereby the light bundling can be further improved. A parallel beam is also advantageous in order to achieve targeted radiation effects in interaction with any downstream optically active elements. As a result, the possible uses of this Fahrzeugleuchtengattung be extended.
Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung beträgt der Umlenkwinkel der Strahlung zwischen den optischen Achsen der Lichtquellen und den Hauptabstrahlungsrichtungen der Reflektoren 90°.According to a further preferred embodiment of the invention, the deflection angle of the radiation between the optical axes of the light sources and the main emission directions of the reflectors is 90 °.
Durch die 90° Ausrichtung ergibt sich ein besonders einfacher Aufbau der Leuchte. Diese Ausrichtung lässt sich zudem vorteilhaft in eine besonders kompakte Bauform integrieren.The 90 ° orientation results in a particularly simple construction of the lamp. This alignment can also be advantageously integrated into a particularly compact design.
Nach einer weiteren bevorzugten Ausführungsform der Erfindung weisen die Reflektoren optisch wirksame Elemente auf, mit Hilfe derer eine vorgegebene Lichtverteilung der reflektierten Strahlung der, von den im Brennpunkt der zugehörigen Hauptreflektoren befindlichen Lichtquellen, auf die Hauptreflektoren sowie auf die Nebenreflektoren auftreffenden Strahlung erzeugt wird. Die optisch wirksamen Elemente können als eine facettenartige Oberflächenstruktur ausgebildet sein. Sie können auch als eine prismenartige Oberflächenstruktur ausgebildet sein.According to a further preferred embodiment of the invention, the reflectors have optically active elements by means of which a predetermined light distribution of the reflected radiation is generated by the light sources located at the focus of the associated main reflectors, on the main reflectors and on the secondary reflectors incident radiation. The optically active elements may be formed as a faceted surface structure. They can also be designed as a prism-like surface structure.
Die optisch wirksamen Elemente sorgen direkt auf der Reflektoroberfläche für die erforderliche, bzw. gewünschte Lichtverteilung. Dadurch sind keine zwischen Reflektor und einer Lichtaustrittfläche anzuordnenden, zusätzlichen Streuscheiben oder dergleichen notwendig. Die optisch wirksamen Elemente in den Randbereichen der Reflektoren können unterschiedlich von den optisch wirksamen Elementen in den zwischen den Randbereichen liegenden Kernbereichen ausgestaltet sein, um die überlappende Ausleuchtung durch die Lichtquellen, die einerseits im Brennpunkt ihrer zugehörigen Leuchte positioniert sind, andererseits aber auch ihre Nachbarreflektoren beleuchten, gegenüber denen sie nicht im Brennpunkt stehen, so zu berücksichtigen, dass eine weitgehend gerichtete, gleichmäßige Abstrahlung über die einzelnen Reflektorenbegrenzungen hinaus erzeugt wird.The optically active elements provide directly on the reflector surface for the required, or desired light distribution. As a result, no additional lenses or the like to be arranged between the reflector and a light exit surface are necessary. The optically active elements in the edge regions of the reflectors may differ from the optically active elements in the core regions located between the edge regions be designed to illuminate the overlapping illumination by the light sources, which are positioned on the one hand in the focal point of their associated lamp, on the other hand, but also illuminate their neighboring reflectors, which are not in focus, so that a broadly directed, uniform radiation over the individual Reflector limitations is also generated.
Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung verlaufen die Hauptabstrahlrichtungen der Reflektoren etwa parallel zueinander.According to a further preferred embodiment of the invention, the main emission directions of the reflectors are approximately parallel to one another.
Durch die Parallelität der Hauptabstrahlrichtungen ergibt sich eine besonders gleichmäßiges und einheitliches Abstrahlungsbild des Leuchtenensembles.The parallelism of the main emission directions results in a particularly uniform and uniform radiation pattern of the luminaire ensemble.
Nach einer weiteren bevorzugten Ausführungsform der Erfindung sind den Lichtquellen optische Mittel zur Erzeugung einer vorgegebenen Abstrahlcharakteristik nachgelagert.According to a further preferred embodiment of the invention, the light sources are followed by optical means for generating a predetermined emission characteristic.
Durch zusätzliche optische Mittel, beispielsweise optische Linsen, können bestimmte Abstrahlungscharakteristiken der Leuchten, wie eine hohe Divergenz eingestellt werden. Dadurch erhält man einen erweiterten Spielraum bei der Anordnung und Gestaltung des Reflektorenensembles, insbesondere, um bei einem weitestgehend vorgegebenen Leuchtendesign in kompakter Bauform die jeweilige Beleuchtung von Hauptreflektoren unter Mitbenutzung der Nebenreflektoren zu realisieren oder auch die Anzahl und Größe von Lichtquellen und Reflektoren zu variieren.By additional optical means, such as optical lenses, certain radiation characteristics of the lamps, such as a high divergence, can be set. This gives an expanded scope in the arrangement and design of the Reflektorenensembles, in particular, to realize a largely predetermined luminaire design in a compact design, the respective illumination of main reflectors using the Nebenreflektoren or to vary the number and size of light sources and reflectors.
Weitere Einzelheiten der Erfindung ergeben sich aus der nachfolgenden ausführlichen Beschreibung und den beigefügten Zeichnungen, in denen bevorzugte Ausführungsformen der Erfindung beispielsweise veranschaulicht sind.Further details of the invention will become apparent from the following detailed description and the accompanying drawings, in which preferred embodiments of the invention are illustrated, for example.
In den Zeichnungen zeigen:
- Figur 1:
- Eine schematische perspektivische Draufsicht eines Reflektor - Lichtquellen - Ensembles und
- Figur 2:
- eine Seitenansicht im Schnitt eines teilparaboloidförmigen Reflektors mit einer Lichtquelle.
- FIG. 1:
- A schematic perspective top view of a reflector light source ensemble and
- FIG. 2:
- a side view in section of a partially paraboloid reflector with a light source.
Eine Fahrzeugleuchte 1 besteht im Wesentlichen aus einer Mehrzahl von Lichtquellen 2 und einer Mehrzahl von den Lichtquellen 2 zugeordneten Reflektoren 3.A vehicle lamp 1 essentially consists of a plurality of light sources 2 and a plurality of reflectors 3 assigned to the light sources 2.
Die Lichtquellen 2 sind vorteilhaft als Leuchtdioden ausgebildet. Die Leuchtdioden 2 sitzen jeweils auf einem Diodensockel 4, in den die elektrischen Anschlüsse integriert sind. Die Leuchtdioden 2 sind vorteilhaft auf einer (nicht dargestellten) gemeinsamen Trägerplatte auf im Prinzip bekannte Weise montiert. Die Lichtquellen 2 sind mit ihren optischen Achsen 11 in einem als ein rechter Winkel ausgerichteten Umlenkwinkel 5 zu einer Hauptabstrahlrichtung 6 der Reflektoren 3 angeordnet. Die Reflektoren 3 weisen eine teilparaboloidförmige Reflektorfläche 7 auf. Die Lichtquellen 2 sind jeweils in den Brennpunkten 8 ihrer ihnen zugeordneten Hauptreflektoren 3 positioniert, so dass näherungsweise alle den Hauptreflektor 3 treffenden Lichtstrahlen 9, von der Hauptreflektoroberfläche 7 als parallel ausgerichtete Lichtstrahlen 9' in die Hauptabstrahlrichtung 6 reflektiert werden (bei Vernachlässigung von Abbildungsfehlern wie sphärischer Aberration). In vereinfachender Weise ist in
In
- 11
- Fahrzeugleuchtevehicle light
- 22
- Lichtquelle (Hauptlichtquelle)Light source (main light source)
- 2'2 '
- Lichtquelle (Nebenlichtquelle)Light source (secondary light source)
- 33
- Hauptreflektormain reflector
- 3'3 '
- Nebenreflektorsubreflector
- 44
- LeuchtdiodensockelLEDs base
- 55
- Umlenkwinkeldeflection
- 66
- Hauptabstrahlrichtungmain radiation
- 6'6 '
- NebenabstrahlrichtungNebenabstrahlrichtung
- 77
- HauptreflektoroberflächeMain reflector surface
- 88th
- Brennpunktfocus
- 99
- eingestrahlter Lichtstrahlirradiated light beam
- 9'9 '
- reflektierter Lichtstrahlreflected light beam
- 1010
- abgestrahltes Lichtbündelemitted light beam
- 1111
- optische Achseoptical axis
Claims (12)
- Vehicle lamp substantially comprising a plurality of light sources (2) and a plurality of reflectors (3) wherein said light sources (2) are featured by a radiation characteristic distributed about an optical axis wherein each of said sources illuminates at least one associated reflector (3) such that the light incident to the reflectors (3) is in each case reflected under a given deflection angle (5) in a main beam direction (6), characterized by the fact that the light sources (2) and the reflectors (3) are designed and arranged in such a way that dependent on its radiation characteristic it has at least one directly adjacent reflector (3') associated with it as secondary reflector in addition to a reflector (3) that goes with it as main reflector such that each of the light sources (2) illuminates the main reflector (3) allocated to it to provide a reflection distributed about the main beam direction (6) and in overlap with the beam from at least one immediately adjacent light source (2') illuminates at least a marginal area of the secondary reflector (3') to provide a reflection that is distributed about the secondary beam direction (6) wherein the secondary reflector (3') is the main reflector (3) allocated to the adjacent light source (2') for generating the reflection distributed about main beam direction (6).
- Vehicle lamp according to Claim 1, characterized by the fact that the light sources (2 2') are light emitting diodes.
- Vehicle lamp according to Claim 1 or 2, characterized by the fact that the reflectors (3, 3') are interconnected to form one common unit and that the light sources (2, 2') are mounted on one common support plate.
- Vehicle lamp according to any of the preceding Claims 1 to 3, characterized by the fact that the reflectors (3, 3') are of paraboloid shape.
- Vehicle lamp according to any of the preceding Claims 1 to 4, characterized by the fact that the light sources (2) are each positioned in the focal point (8) of their associated main reflectors (3).
- Vehicle lamp according to any of the preceding Claims 1 to 5, characterized by the fact that the beam deflection angle (5) between the optical axes (11) of the light sources (2) and the main beam directions (6) of the reflectors (3) is 90°.
- Vehicle lamp according to any of the preceding Claims 1 to 6, characterized by the fact that the reflectors (3, 3') comprise optically effective elements by means of which a predetermined distribution of the light and/or the reflected radiation that impinges the main reflectors (3) and the secondary reflectors (3') from the light sources (2) disposed in the focal point (8) of the associated main reflectors (3) is ensured..
- Vehicle lamp according to Claim 7, characterized by the fact that the optically effective elements are in the form of facet type surface areas in part at least.
- Vehicle lamp according to Claim 7 or 8, characterized by the fact that the optically effective elements are in the form of prism type surface areas in part at least.
- Vehicle lamp according to any of the preceding Claims 7 to 9, characterized by the fact that the optically effective elements in the marginal areas of the reflectors are different from those in the core regions between said marginal areas.
- Vehicle lamp according to any of the preceding Claims 1 to 10, characterized by the fact that the main beam directions (6) of the main reflectors (3) extend substantially parallel to one another.
- Vehicle lamp according to any of the preceding Claims 1 to 11, characterized by the fact that optical means are disposed on the downstream side of the light sources (2, 2') to establish a predetermined radiation characteristic.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10221683A DE10221683A1 (en) | 2002-05-16 | 2002-05-16 | vehicle light |
DE10221683 | 2002-05-16 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1362740A2 EP1362740A2 (en) | 2003-11-19 |
EP1362740A3 EP1362740A3 (en) | 2006-12-27 |
EP1362740B1 true EP1362740B1 (en) | 2009-02-25 |
Family
ID=29265311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03101294A Expired - Lifetime EP1362740B1 (en) | 2002-05-16 | 2003-05-09 | Vehicle lamp |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1362740B1 (en) |
DE (2) | DE10221683A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4044024B2 (en) * | 2003-09-29 | 2008-02-06 | 株式会社小糸製作所 | Vehicle headlamp |
US7040782B2 (en) * | 2004-02-19 | 2006-05-09 | Gelcore, Llc | Off-axis parabolic reflector |
DE102010012747A1 (en) * | 2010-03-25 | 2011-09-29 | Hella Kgaa Hueck & Co. | lighting device |
CN105066041B (en) * | 2015-08-14 | 2017-08-29 | 安徽江淮汽车集团股份有限公司 | A kind of side signal lamp |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3004422C2 (en) * | 1980-02-07 | 1988-09-29 | Sidler Gmbh & Co, 7400 Tuebingen | Parabolic reflector |
CZ35699A3 (en) * | 1999-02-03 | 2000-09-13 | Autopal, S. R. O. | Flat automobile light with LED |
DE20004188U1 (en) * | 2000-03-06 | 2000-05-04 | Fer Fahrzeugelektrik Gmbh | lamp |
EP1077344A3 (en) * | 1999-08-16 | 2004-01-28 | FER Fahrzeugelektrik GmbH | Lamp |
DE10019559A1 (en) * | 2000-04-20 | 2001-10-25 | Hella Kg Hueck & Co | Vehicle light |
DE20102587U1 (en) * | 2001-02-14 | 2001-05-10 | Fer Fahrzeugelektrik Gmbh | Vehicle light |
-
2002
- 2002-05-16 DE DE10221683A patent/DE10221683A1/en not_active Withdrawn
-
2003
- 2003-05-09 DE DE50311205T patent/DE50311205D1/en not_active Expired - Lifetime
- 2003-05-09 EP EP03101294A patent/EP1362740B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE10221683A1 (en) | 2003-12-04 |
EP1362740A3 (en) | 2006-12-27 |
EP1362740A2 (en) | 2003-11-19 |
DE50311205D1 (en) | 2009-04-09 |
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