EP1176359A2 - Vehicle light - Google Patents

Vehicle light Download PDF

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Publication number
EP1176359A2
EP1176359A2 EP01116161A EP01116161A EP1176359A2 EP 1176359 A2 EP1176359 A2 EP 1176359A2 EP 01116161 A EP01116161 A EP 01116161A EP 01116161 A EP01116161 A EP 01116161A EP 1176359 A2 EP1176359 A2 EP 1176359A2
Authority
EP
European Patent Office
Prior art keywords
light
emitting means
light emitting
luminaire according
reflector
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
Application number
EP01116161A
Other languages
German (de)
French (fr)
Other versions
EP1176359B1 (en
EP1176359A3 (en
Inventor
Klaus Henneböhle
Heinz-Albert Püttmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP1176359A2 publication Critical patent/EP1176359A2/en
Publication of EP1176359A3 publication Critical patent/EP1176359A3/en
Application granted granted Critical
Publication of EP1176359B1 publication Critical patent/EP1176359B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F21S43/20—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
    • F21S43/249—Light guides with two or more light sources being coupled into the light guide
    • 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
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/239—Light guides characterised by the shape of the light guide plate-shaped
    • 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
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/241—Light guides characterised by the shape of the light guide of complex shape
    • 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
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces
    • 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

Definitions

  • the invention relates to a lamp for vehicles with a light emitting means and a reflector housing, which is transparent Cover plate is covered, the reflector with a number of optical surfaces arranged at an angle to one another Reflecting elements is oriented towards the lens.
  • a lamp for vehicles is known with a a housing containing light source, covered by a lens is.
  • a reflector consisting of several reflector elements is arranged on one side of the lens facing the light source. These are used to keep the surrounding area on the lens striking light is totally reflected.
  • the reflector elements are line by line arranged, with cylindrical lenses between the reflector lines are formed, which form a light passage for the by means of an intermediate the lens and the light source arranged optical disc collected Light emitted by the light source. Because of the reflector elements occupied area of the lens for the passage of the light emitted by the light source ceases to be cylindrical lenses Optical disc matched to the cylindrical lenses of the cover lens his.
  • a disadvantage of the known lamp is that the lamp due to the light emission direction optics and cover lenses arranged one behind the other has a considerable depth.
  • a disadvantage of the known luminaire is that it enables the reflector function additional housing surfaces must be provided, which is the dimension the luminaire, especially the depth of the same, increase.
  • the object of the present invention is therefore a lamp for vehicles with a housing that accommodates a light emission means and a reflector to further develop such that the installation space depth of the Luminaire is reduced.
  • the lamp according to the invention is in connection with the preamble of patent claim 1, characterized in that a A light emission means is assigned to the number of reflection elements and that the retroreflective element with at least in the plane of the retroreflective element extending light passage is operatively connected.
  • the particular advantage of the invention is that the functional Coupling between the retroreflective elements on the one hand and the light emitting means on the other hand, the installation space depth of the lamp is significantly reduced can be.
  • the basic idea of the invention is to use the light emission means in the Arrange near a retroreflective element, the retroreflective element a light passage for the passage of that emitted by the light emitting means Has light. This results in a functional coupling between the reflector on the one hand and the light emitter on the other.
  • a plurality of distributed reflecting elements on the one hand and corresponding to Light emitting means arranged light passages on the other hand provided.
  • the light emitting agent can in front of, in or behind the light transmission of the retroreflective element be arranged.
  • the retroreflective element is coaxial with the Light emitting element arranged. This makes it more regular and harmonious Stylistic effect of the lamp achieved for the viewer.
  • the light emitting means is in such a way Area of an opening of a retroreflective element arranged that the the light emitted by the light emitting means on the optical surfaces of the retroreflective element is reflected.
  • the optical surfaces By using the optical surfaces for reflection the light rays emitted by the light emitting means can be advantageous the luminous flux of the light function can be increased.
  • the light passage can be used as one Light opening can be designed to accommodate at least one front area of the light emission means.
  • Installation space depth of the luminaire can be reduced and secondly a better one Utilization of the optical surfaces to increase the usable luminous flux Luminaire can be achieved.
  • a retroreflective field is in the direction of light emission in front of one consisting of several light emission means
  • Light emission field upstream, the reflection field a plurality of has reflecting elements arranged in a surface.
  • the retroreflective function and the light emission function are in two spaced apart and substantially perpendicular arranged to the optical axis of the light-emitting elements planes. In this way, a homogeneous areal light function can be advantageous on the one hand and the retroreflective function on the other.
  • the light emission means is as one Light-emitting diode or as one upstream of the light-emitting diode in the direction of light emission Optical fiber trained.
  • the light guide can advantageously be made in one piece with the transparent light transmission or the reflection field.
  • the reflector field can thus, for example, in one work step Injection molding are produced, followed by the optical surfaces of the retroreflective elements be provided with a reflective coating.
  • the retroreflective element is made of one Triple prism with at least three each at an obtuse angle to each other arranged optical surfaces, the longitudinal extent of the optical surfaces is much larger, preferably two to six times that Transverse extent of the light passage and / or the light emitting means. Due to the relatively large volume of such a retroreflective element can in particular the lighting function when the light emitting means is arranged be supported in the light opening.
  • a lamp for vehicles usually has a housing, not shown on, in the direction of light emission through a lens, not shown is covered. Inside the housing is in the direction of light emission or more light emitting means arranged. As can be seen from Figures 1 to 3 is, the light emitting means as one or more on a support plate arranged LED 1 may be formed. These LEDs 1 are each in a preferably central receiving opening 2 of a retroreflective element 3 positioned.
  • the retroreflective element 3 consists of a triple prism with optical surfaces 4 arranged at an obtuse angle to one another, which with are coated with a reflective coating.
  • the LEDs 1 are arranged in such a way to the retroreflective elements 3 that a light head 5 of the Light-emitting diode 1 almost completely in the direction of light emission 6 opening optical surfaces 4 formed space.
  • the optical surfaces 4 are in their longitudinal extension by two to six times longer formed as the transverse extension of the lamp head 5. Due to the relative position the optical surfaces 4 to the light head 5 on the one hand and due to the size of the optical surfaces 4, they can be reflected by the light emitting diodes 1 emitted light beams in the light emission direction 6 to increase the luminous flux the LED 1 contribute.
  • the fact that the reflective elements 3 are oriented coaxially with the light head 5, the efficiency of the light source 1 can be increased further.
  • the optical surfaces 4 are oriented to one another in such a way that this is parallel to the optical axis of the light emitting diode 1 incident light after a multiple Reflection in its direction of incidence is reflected back.
  • a A plurality of light emitting diodes 1 are arranged, which are compared to the Reflective elements 3 have a small transverse extent, the styling of the lamp by having a plurality of retroreflective elements 3 Reflector 7 shaped. Due to the direct installation of the LEDs 1 at the apex of the retroreflective elements 3, the lamp with a relatively shallow component depth can be realized.
  • the housing has a front reflector field 8 in the light emission direction 6 and a have light emission field 9 lying behind in light emission direction 6.
  • the Reflector field 8 is spaced from the light emission field 9 and between the light emission field 9 on the one hand and a transparent cover plate 10 arranged on the other hand.
  • the reflector field 8 is arranged like a checkerboard, where reflective elements 11 alternate with light passages 12.
  • the retroreflective elements 11 are - as in the previous embodiment - formed by triple prisms that parallel the incident light from the environment reflect back.
  • the light passages 12 are transparent and essentially just formed, so that the light is each one of the light passage assigned LED 13 in the light emission direction 6 essentially can pass through the light passage 12 unaffected.
  • the Light passage 12 is integrally connected to the retroreflective elements 11.
  • the reflector 14 thus formed is preferably made of a transparent one Made of plastic material, the reflective elements 11 on one of the End plate 10 facing side by means of a reflective Coating are mirrored.
  • the reflector field 8 and the light emission field 9 are regular are provided with retroreflective elements 11 or light-emitting diodes 13 homogeneous styling of the lamp can be realized. There is a vertical one full-area and evenly distributed to the light emission direction 6 Reflecting and lighting function.
  • a Reflector field 15 in comparison to the previously described reflector field from a plurality of retroreflective elements 16 arranged in a frame-like manner and a central strip 17 can be formed by light passages 18.
  • the light-emitting means can also be used as light-emitting diodes as one or more Incandescent lamps 19 are formed, the light rays 20 emitted by a Reflector 21 are reflected in the direction of the light passage 18.
  • the Light passages 18 are arranged adjacent to each other so that the light is emitted in the form of a strip.
  • Light guide 24 may be formed on the other hand as light emitting means.
  • the light guide 24 in one piece with the Reflector field 22 be connected and extends as an extension of Reflector field 22 on a side facing away from the lens 25 of the reflector field 22 in the direction of an LED 26 Light source.
  • the light-emitting diode 26 is at the free end of the light guide 24 arranged so that the light rays 27 emitted by the light-emitting diode 26 the outer surfaces of the light guide 24 are totally reflected until they reach one Exit the end plate 25 facing end.
  • a light guide 28 is in a receiving opening 29 of the Reflector field 22 positioned.

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)
  • Optical Elements Other Than Lenses (AREA)

Abstract

The lamp is designed so that a number of reflector elements (3) is respectively assigned a light radiation means (1) and the reflector element (3) is connected working in conjunction with one at least, light passage extending in the plane of the reflector element (3).

Description

Die Erfindung betrifft eine Leuchte für Fahrzeuge mit einem ein Lichtabstrahlmittel und einen Rückstrahler aufnehmenden Gehäuse, das durch eine transparente Abschlussscheibe abgedeckt ist, wobei der Rückstrahler mit einer Anzahl von in einem Winkel zueinander angeordneten Optikflächen aufweisenden Rückstrahlelementen zu der Abschlussscheibe hin ausgerichtete ist.The invention relates to a lamp for vehicles with a light emitting means and a reflector housing, which is transparent Cover plate is covered, the reflector with a number of optical surfaces arranged at an angle to one another Reflecting elements is oriented towards the lens.

Aus der DE 90 02 245 U1 ist eine Leuchte für Fahrzeuge bekannt mit einem eine Lichtquelle enthaltenden Gehäuse, das durch eine Abschlussscheibe abgedeckt ist. Auf einer der Lichtquelle zugewandten Seite der Abschlussscheibe ist ein aus mehreren Rückstrahlerelementen bestehender Rückstrahler angeordnet. Diese dienen dazu, dass das aus der Umgebung auf die Abschlussscheibe treffende Licht total reflektiert wird. Die Rückstrahlerelemente sind zeilenweise angeordnet, wobei zwischen den Rückstrahlerzeilen Zylinderlinsen ausgebildet sind, die einen Lichtdurchlass bilden für das mittels einer zwischen der Abschlussscheibe und der Lichtquelle angeordneten Optikscheibe gesammelte Licht, das von der Lichtquelle emittiert wird. Da die durch die Rückstrahlerelemente eingenommene Fläche der Abschlussscheibe für den Durchtritt des von der Lichtquelle emittierten Lichtes wegfällt, müssen Zylinderlinsen der Optikscheibe zu den Zylinderlinsen der Abschlussscheibe auf einanderabgestimmt sein.From DE 90 02 245 U1 a lamp for vehicles is known with a a housing containing light source, covered by a lens is. On one side of the lens facing the light source a reflector consisting of several reflector elements is arranged. These are used to keep the surrounding area on the lens striking light is totally reflected. The reflector elements are line by line arranged, with cylindrical lenses between the reflector lines are formed, which form a light passage for the by means of an intermediate the lens and the light source arranged optical disc collected Light emitted by the light source. Because of the reflector elements occupied area of the lens for the passage of the light emitted by the light source ceases to be cylindrical lenses Optical disc matched to the cylindrical lenses of the cover lens his.

Nachteilig an der bekannten Leuchte ist, dass die Leuchte infolge der in Lichtabstrahlrichtung hintereinander angeordneten Optik- und Abschlussscheibe eine erhebliche Bautiefe aufweist.A disadvantage of the known lamp is that the lamp due to the light emission direction optics and cover lenses arranged one behind the other has a considerable depth.

Aus der nicht vorveröffentlichten deutschen Patentanmeldung 199 46 850.8 ist eine Leuchte für Fahrzeuge mit einem als Lichtquelle ausgebildeten und in einem Gehäuse positionierten Lichtabstrahlmittel bekannt, das das Licht in Lichtabstrahlrichtung durch eine transparente Abschlussscheibe emittiert. Zur Totalreflexion des aus der Umgebung eintretenden Lichtes ist ein Rückstrahler mit einer Anzahl von in einem Winkel zueinander angeordneten Optikflächen in Richtung der Abschlussscheibe orientiert. Der Rückstrahler erstreckt sich bereichsweise an einer Gehäusewandung, wobei das von dem Lichtabstrahlmittel emittierte Licht unwesentlich beeinflusst wird.From the unpublished German patent application 199 46 850.8 a lamp for vehicles with a trained as a light source and in one Housing positioned light emitting means known that the light in the light emitting direction emitted through a transparent lens. For total reflection the light entering from the surroundings is a reflector a number of optical surfaces arranged at an angle to one another in Oriented towards the lens. The reflector extends in some areas on a housing wall, which from the light emitting means emitted light is negligibly influenced.

Nachteilig an der bekannten Leuchte ist, dass zur Ermöglichung der Rückstrahlerfunktion zusätzliche Gehäuseflächen bereitgestellt sein müssen, die die Dimension der Leuchte, insbesondere die Bautiefe derselben, erhöhen.A disadvantage of the known luminaire is that it enables the reflector function additional housing surfaces must be provided, which is the dimension the luminaire, especially the depth of the same, increase.

Aufgabe der vorliegenden Erfindung ist es daher, eine Leuchte für Fahrzeuge mit einem ein Lichtabstrahlmittel und einen Rückstrahler aufnehmenden Gehäuse derart weiterzubilden, dass auf einfache Weise die Bauraumtiefe der Leuchte verringert wird.The object of the present invention is therefore a lamp for vehicles with a housing that accommodates a light emission means and a reflector to further develop such that the installation space depth of the Luminaire is reduced.

Zur Lösung diese Aufgabe ist die erfindungsgemäße Leuchte in Verbindung mit dem Oberbegriff des Patenanspruchs 1 dadurch gekennzeichnet, dass eine Anzahl von Rückstrahlelementen jeweils ein Lichtabstrahlmittel zugeordnet ist und dass das Rückstrahlelement mit einem zumindest in der Ebene des Rückstrahlelementes erstreckenden Lichtdurchlass wirkverbunden ist.To solve this problem, the lamp according to the invention is in connection with the preamble of patent claim 1, characterized in that a A light emission means is assigned to the number of reflection elements and that the retroreflective element with at least in the plane of the retroreflective element extending light passage is operatively connected.

Der besondere Vorteil der Erfindung besteht darin, dass durch die funktionale Kopplung zwischen den Rückstrahlelementen einerseits und den Lichtabstrahlmitteln andererseits die Bauraumtiefe der Leuchte wesentlich reduziert werden kann. Grundgedanke der Erfindung ist es, das Lichtabstrahlmittel in der Nähe eines Rückstrahlelementes anzuordnen, wobei das Rückstrahlelement einen Lichtdurchlass für den Durchtritt des von dem Lichtabstrahlmittel emittierten Lichtes aufweist. Es ergibt sich hierdurch eine funktionale Kopplung zwischen dem Rückstrahler einerseits und dem Lichtabstrahlmittel andererseits. The particular advantage of the invention is that the functional Coupling between the retroreflective elements on the one hand and the light emitting means on the other hand, the installation space depth of the lamp is significantly reduced can be. The basic idea of the invention is to use the light emission means in the Arrange near a retroreflective element, the retroreflective element a light passage for the passage of that emitted by the light emitting means Has light. This results in a functional coupling between the reflector on the one hand and the light emitter on the other.

Nach einer besonderen Ausführungsform der Erfindung sind eine Mehrzahl von verteilt angeordneten Rückstrahlelementen einerseits und korrespondierend zu Lichtabstrahlmitteln angeordneten Lichtdurchlässen andererseits vorgesehen. Auf diese Weise kann sowohl eine flächenhafte Leuchtfunktion als auch eine flächenhafte Rückstrahlfunktion erzeugt werden. Dabei kann das Lichtabstrahlmittel vor, in oder hinter dem Lichtdurchlass des Rückstrahlelementes angeordnet sein.According to a particular embodiment of the invention, a plurality of distributed reflecting elements on the one hand and corresponding to Light emitting means arranged light passages on the other hand provided. In this way, both a two-dimensional lighting function and one areal reflective function can be generated. The light emitting agent can in front of, in or behind the light transmission of the retroreflective element be arranged.

Nach einer Weiterbildung der Erfindung ist das Rückstrahlelement koaxial zum Lichtabstrahlelement angeordnet. Hierdurch wird ein regelmäßiger und harmonischer stilistischer Effekt der Leuchte beim Betrachter erzielt.According to a development of the invention, the retroreflective element is coaxial with the Light emitting element arranged. This makes it more regular and harmonious Stylistic effect of the lamp achieved for the viewer.

Nach einer Weiterbildung der Erfindung ist das Lichtabstrahlmittel derart im Bereich einer Öffnung eines Rückstrahlelementes angeordnet, dass das von dem Lichtabstrahlmittel ausgesandte Licht an den Optikflächen des Rückstrahlelementes reflektiert wird. Durch die Nutzung der Optikflächen zur Reflexion der von dem Lichtabstrahlmittel ausgesandten Lichtstrahlen kann vorteilhaft der Lichtstrom der Leuchtfunktion vergrößert werden.According to a development of the invention, the light emitting means is in such a way Area of an opening of a retroreflective element arranged that the the light emitted by the light emitting means on the optical surfaces of the retroreflective element is reflected. By using the optical surfaces for reflection the light rays emitted by the light emitting means can be advantageous the luminous flux of the light function can be increased.

Nach einer Weiterbildung der Erfindung kann der Lichtdurchlass als eine Lichtöffnung ausgebildet sein, die zur Aufnahme zumindest eines vorderen Bereiches des Lichtabstrahlmittels dient. Auf diese Weise kann zum einen die Bauraumtiefe der Leuchte reduziert werden und zum anderen eine bessere Ausnutzung der Optikflächen zur Erhöhung des nutzbaren Lichtstroms der Leuchte erzielt werden.According to a development of the invention, the light passage can be used as one Light opening can be designed to accommodate at least one front area of the light emission means. In this way, on the one hand Installation space depth of the luminaire can be reduced and secondly a better one Utilization of the optical surfaces to increase the usable luminous flux Luminaire can be achieved.

Nach einer Weiterbildung der Erfindung ist ein Rückstrahlfeld einem in Lichtabstrahlrichtung vor einem aus mehreren Lichtabstrahlmitteln bestehendes Lichtabstrahlfeld vorgelagert, wobei das Rückstrahlfeld das eine Mehrzahl von in einer Fläche angeordneter Rückstrahlelemente aufweist. Erfindungsgemäß sind hierbei zum einen die Rückstrahlfunktion und zum anderen die Lichtabstrahlfunktion in zwei voneinander beabstandeten und im Wesentlichen senkrecht zur optischen Achse der Lichtabstrahlelemente verlaufenden Ebenen angeordnet. Vorteilhaft kann hierdurch eine homogene flächenhafte Lichtfunktion einerseits und Rückstrahlfunktion andererseits realisiert werden.According to a development of the invention, a retroreflective field is in the direction of light emission in front of one consisting of several light emission means Light emission field upstream, the reflection field a plurality of has reflecting elements arranged in a surface. According to the invention are the retroreflective function and the light emission function in two spaced apart and substantially perpendicular arranged to the optical axis of the light-emitting elements planes. In this way, a homogeneous areal light function can be advantageous on the one hand and the retroreflective function on the other.

Nach einer Weiterbildung der Erfindung ist das Lichtabstrahlmittel als eine Leuchtdiode oder als eine der Leuchtdiode in Lichtabstrahlrichtung vorgelagerter Lichtleiter ausgebildet. Vorteilhaft kann der Lichtleiter einstückig mit dem transparenten Lichtdurchlass bzw. dem Rückstrahlfeld verbunden sein. Das Rückstrahlerfeld kann somit in einem Arbeitsschritt, beispielsweise durch Spritzgießen hergestellt werden, wobei nachfolgend die Optikflächen der Rückstrahlelemente mit einem reflektierenden Überzug versehen werden.According to a development of the invention, the light emission means is as one Light-emitting diode or as one upstream of the light-emitting diode in the direction of light emission Optical fiber trained. The light guide can advantageously be made in one piece with the transparent light transmission or the reflection field. The The reflector field can thus, for example, in one work step Injection molding are produced, followed by the optical surfaces of the retroreflective elements be provided with a reflective coating.

Nach einer Weiterbildung der Erfindung ist das Rückstrahlelement aus einem Tripelprisma mit zumindest drei jeweils in einem stumpfen Winkel zueinander angeordneten Optikflächen ausgebildet, wobei die Längserstreckung der Optikflächen wesentlich größer ist, vorzugsweise das zwei- bis sechsfache, als die Quererstreckung des Lichtdurchlasses und/oder des Lichtabstrahlmittels. Durch die relativ großvolumige Dimension eines solchen Rückstrahlelementes kann insbesondere die Leuchtfunktion bei Anordnung des Lichtabstrahlmittels in der Lichtöffnung unterstützt werden.According to a development of the invention, the retroreflective element is made of one Triple prism with at least three each at an obtuse angle to each other arranged optical surfaces, the longitudinal extent of the optical surfaces is much larger, preferably two to six times that Transverse extent of the light passage and / or the light emitting means. Due to the relatively large volume of such a retroreflective element can in particular the lighting function when the light emitting means is arranged be supported in the light opening.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen näher erläutert.Embodiments of the invention are described below with reference to the drawings explained in more detail.

Es zeigen:

Figur 1
eine perspektivische Darstellung eines mit einer Lichtquelle gekoppelten Rückstrahlelementes,
Figur 2
eine Vorderansicht eines Rückstrahlers mit in einer Lichtöffnung eines Rückstrahlelementes gelagerten Lichtquellen,
Figur 3
eine perspektivische Vorderansicht des Rückstrahlers gemäß Figur 2,
Figur 4
eine Vorderansicht eines Rückstrahlerfeldes mit einem in Lichtabstrahlrichtung hinter dem Rückstrahlerfeld angeordneten Lichtabstrahlfeld,
Figur 5
einen Schnitt entlang der Linie V-V gemäß Figur 4,
Figur 6
eine Vorderansicht eines Rückstrahlerfeldes gemäß einer weiteren Ausführungsform,
Figur 7
einen Schnitt entlang der Linie VII-VII gemäß Figur 6,
Figur 8
eine Vorderansicht eines Rückstrahlerfeldes nach einem weiteren Ausführungsbeispiel, wobei ein Lichtabstrahlmittel durch einen Lichtleiter gebildet ist und
Figur 9
einen Schnitt entlang der Linie IX-IX gemäß Figur 8.
Show it:
Figure 1
2 shows a perspective illustration of a retroreflective element coupled to a light source,
Figure 2
2 shows a front view of a retroreflector with light sources stored in a light opening of a retroreflective element,
Figure 3
2 shows a perspective front view of the reflector according to FIG. 2,
Figure 4
2 shows a front view of a reflector field with a light emission field arranged behind the reflector field in the direction of light emission,
Figure 5
3 shows a section along the line VV according to FIG. 4,
Figure 6
2 shows a front view of a reflector field according to a further embodiment,
Figure 7
6 shows a section along the line VII-VII according to FIG. 6,
Figure 8
a front view of a reflector field according to a further embodiment, wherein a light emitting means is formed by a light guide and
Figure 9
a section along the line IX-IX of Figure 8.

Eine Leuchte für Fahrzeuge weist üblicherweise ein nicht dargestelltes Gehäuse auf, das in Lichtabstrahlrichtung durch eine nicht dargestellte Abschlussscheibe abgedeckt ist. Innerhalb des Gehäuses ist in Lichtabstrahlrichtung ein oder mehrere Lichtabstrahlmittel angeordnet. Wie aus Figur 1 bis 3 zu ersehen ist, kann das Lichtabstrahlmittel als eine oder mehrere auf einer Trägerplatte angeordnete Leuchtdiode 1 ausgebildet sein. Diese Leuchtdioden 1 sind jeweils in einer vorzugsweise mittleren Aufnahmeöffnung 2 eines Rückstrahlelementes 3 positioniert. Das Rückstrahlelement 3 besteht aus einem Tripelprisma mit in einem stumpfen Winkel zueinander angeordneten Optikflächen 4, die mit einer reflektierenden Beschichtung bedampft sind. Die Leuchtdioden 1 sind derart zu den Rückstrahlelementen 3 angeordnet, dass ein Leuchtkopf 5 der Leuchtdiode 1 annähernd vollständig in den durch die sich in Lichtabstrahlrichtung 6 sich öffnenden Optikflächen 4 gebildeten Raum erstrecken. Die Optikflächen 4 sind in ihrer Längserstreckung um das zwei- bis sechsfache Länger ausgebildet als die Quererstreckung des Leuchtkopfes 5. Aufgrund der Relativlage der Optikflächen 4 zu dem Leuchtkopf 5 einerseits und aufgrund der Größe der Optikflächen 4 können sie durch Reflexion der von den Leuchtdioden 1 emittierten Lichtstrahlen in Lichtabstrahlrichtung 6 zur Erhöhung des Lichtstromes der Leuchtdiode 1 beitragen. Dadurch, dass die Rückstrahlelemente 3 koaxial zu dem Leuchtkopf 5 orientiert sind, kann der Wirkungsgrad der Lichtquelle 1 weiter erhöht werden.A lamp for vehicles usually has a housing, not shown on, in the direction of light emission through a lens, not shown is covered. Inside the housing is in the direction of light emission or more light emitting means arranged. As can be seen from Figures 1 to 3 is, the light emitting means as one or more on a support plate arranged LED 1 may be formed. These LEDs 1 are each in a preferably central receiving opening 2 of a retroreflective element 3 positioned. The retroreflective element 3 consists of a triple prism with optical surfaces 4 arranged at an obtuse angle to one another, which with are coated with a reflective coating. The LEDs 1 are arranged in such a way to the retroreflective elements 3 that a light head 5 of the Light-emitting diode 1 almost completely in the direction of light emission 6 opening optical surfaces 4 formed space. The optical surfaces 4 are in their longitudinal extension by two to six times longer formed as the transverse extension of the lamp head 5. Due to the relative position the optical surfaces 4 to the light head 5 on the one hand and due to the size of the optical surfaces 4, they can be reflected by the light emitting diodes 1 emitted light beams in the light emission direction 6 to increase the luminous flux the LED 1 contribute. The fact that the reflective elements 3 are oriented coaxially with the light head 5, the efficiency of the light source 1 can be increased further.

Die Optikflächen 4 sind derart zueinander orientiert, dass das parallel zu der optischen Achse der Leuchtdiode 1 einfallende Licht nach einer mehrfachen Reflexion in seine Einfallsrichtung zurückreflektiert wird. Dadurch, dass eine Mehrzahl von Leuchtdioden 1 verteilt angeordnet sind, die im Vergleich zu den Rückstrahlelementen 3 eine geringe Quererstreckung aufweisen, wird das Styling der Leuchte durch den eine Mehrzahl von Rückstrahlelementen 3 aufweisenden Rückstrahler 7 geprägt. Durch die unmittelbare Anlage der Leuchtdioden 1 an den Scheitel der Rückstrahlelemente 3 kann die Leuchte mit einer relativ geringen Bauteiltiefe verwirklicht werden.The optical surfaces 4 are oriented to one another in such a way that this is parallel to the optical axis of the light emitting diode 1 incident light after a multiple Reflection in its direction of incidence is reflected back. In that a A plurality of light emitting diodes 1 are arranged, which are compared to the Reflective elements 3 have a small transverse extent, the styling of the lamp by having a plurality of retroreflective elements 3 Reflector 7 shaped. Due to the direct installation of the LEDs 1 at the apex of the retroreflective elements 3, the lamp with a relatively shallow component depth can be realized.

Nach einer weiteren Ausführungsform einer Leuchte gemäß Figur 4 und 5 kann das Gehäuse ein in Lichtabstrahlrichtung 6 vorderes Rückstrahlerfeld 8 und ein in Lichtabstrahlrichtung 6 zurückliegendes Lichtabstrahlfeld 9 aufweisen. Das Rückstrahlerfeld 8 ist beabstandet zu dem Lichtabstrahlfeld 9 und zwischen dem Lichtabstrahlfeld 9 einerseits und einer transparenten Abschlussscheibe 10 andererseits angeordnet. Das Rückstrahlerfeld 8 ist schachbrettartig angeordnet, wobei sich Rückstrahlelemente 11 mit Lichtdurchlässen 12 abwechseln. Die Rückstrahlelemente 11 werden ― wie im vorherigen Ausführungsbeispiel ― durch Tripelprismen gebildet, die das einfallende Licht aus der Umgebung parallel zurückreflektieren. Die Lichtdurchlässe 12 sind transparent und im wesentlichen eben ausgebildet, so dass das Licht einer jeweils dem Lichtdurchlass zugeordneten Leuchtdiode 13 in Lichtabstrahlrichtung 6 im wesentlichen unbeeinflusst durch den Lichtdurchlass 12 hindurchtreten kann. Der Lichtdurchlass 12 ist einstückig mit den Rückstrahlelementen 11 verbunden. Der so gebildete Rückstrahler 14 ist vorzugsweise aus einem transparenten Kunststoffmaterial hergestellt, wobei die Rückstrahlelemente 11 auf einer der Abschlussscheibe 10 zugewandten Seite mittels einer reflektierenden Beschichtung verspiegelt sind.According to a further embodiment of a lamp according to Figures 4 and 5 can the housing has a front reflector field 8 in the light emission direction 6 and a have light emission field 9 lying behind in light emission direction 6. The Reflector field 8 is spaced from the light emission field 9 and between the light emission field 9 on the one hand and a transparent cover plate 10 arranged on the other hand. The reflector field 8 is arranged like a checkerboard, where reflective elements 11 alternate with light passages 12. The retroreflective elements 11 are - as in the previous embodiment - formed by triple prisms that parallel the incident light from the environment reflect back. The light passages 12 are transparent and essentially just formed, so that the light is each one of the light passage assigned LED 13 in the light emission direction 6 essentially can pass through the light passage 12 unaffected. The Light passage 12 is integrally connected to the retroreflective elements 11. The reflector 14 thus formed is preferably made of a transparent one Made of plastic material, the reflective elements 11 on one of the End plate 10 facing side by means of a reflective Coating are mirrored.

Dadurch, dass das Rückstrahlerfeld 8 und das Lichtabstrahlfeld 9 regelmäßig mit Rückstrahlelementen 11 bzw. Leuchtdioden 13 versehen sind, kann ein homogenes Styling der Leuchte verwirklicht werden. Es erfolgt eine senkrecht zu der Lichtabstrahlrichtung 6 verlaufende vollflächige und gleich verteilte Rückstrahl- und Leuchtfunktion.Because the reflector field 8 and the light emission field 9 are regular are provided with retroreflective elements 11 or light-emitting diodes 13 homogeneous styling of the lamp can be realized. There is a vertical one full-area and evenly distributed to the light emission direction 6 Reflecting and lighting function.

Nach einem weiteren Ausführungsbeispiel gemäß Figur 6 und 7 kann ein Rückstrahlerfeld 15 im Vergleich zum vorherig beschriebenen Rückstrahlerfeld aus einer Mehrzahl von rahmenartig angeordneten Rückstrahlelementen 16 und einem mittleren Streifen 17 von Lichtdurchlässen 18 gebildet sein. Alternativ zu Leuchtdioden kann das Lichtabstrahlmittel auch als eine oder mehrere Glühlampen 19 ausgebildet sein, dessen emittierte Lichtstrahlen 20 durch einen Reflektor 21 in Richtung des Lichtdurchlasses 18 reflektiert werden. Die Lichtdurchlässe 18 sind benachbart zueinander angeordnet, so dass das Licht in Form eines Streifens abgestrahlt wird.According to a further exemplary embodiment according to FIGS. 6 and 7, a Reflector field 15 in comparison to the previously described reflector field from a plurality of retroreflective elements 16 arranged in a frame-like manner and a central strip 17 can be formed by light passages 18. alternative the light-emitting means can also be used as light-emitting diodes as one or more Incandescent lamps 19 are formed, the light rays 20 emitted by a Reflector 21 are reflected in the direction of the light passage 18. The Light passages 18 are arranged adjacent to each other so that the light is emitted in the form of a strip.

Nach einem weiteren Ausführungsbeispiel gemäß Figur 8 und 9 kann ein Rückstrahlerfeld 22 - wie in den vorherigen Ausführungsbeispielen beschrieben - durch eine Mehrzahl von Rückstrahlelementen 23 einerseits und durch Lichtleiter 24 als Lichtabstrahlmittel andererseits gebildet sein. Gemäß der linken Seite in Figur 8 und 9 kann der Lichtleiter 24 einstückig mit dem Rückstrahlerfeld 22 verbunden sein und erstreckt sich als Fortsatz des Rückstrahlerfeldes 22 auf einer der Abschlussscheibe 25 abgewandten Seite des Rückstrahlerfeldes 22 in Richtung einer als Leuchtdiode 26 ausgebildeten Lichtquelle. Die Leuchtdiode 26 ist an dem freien Ende des Lichtleiters 24 angeordnet, so dass die von der Leuchtdiode 26 emittierten Lichtstrahlen 27 an den Mantelflächen des Lichtleiters 24 totalreflektiert werden, bis sie an einen der Abschlussscheibe 25 zugewandten Ende austreten.According to a further exemplary embodiment according to FIGS. 8 and 9, a Reflector field 22 - as described in the previous exemplary embodiments - By a plurality of retroreflective elements 23 on the one hand and by Light guide 24 may be formed on the other hand as light emitting means. According to the left Page in Figures 8 and 9, the light guide 24 in one piece with the Reflector field 22 be connected and extends as an extension of Reflector field 22 on a side facing away from the lens 25 of the reflector field 22 in the direction of an LED 26 Light source. The light-emitting diode 26 is at the free end of the light guide 24 arranged so that the light rays 27 emitted by the light-emitting diode 26 the outer surfaces of the light guide 24 are totally reflected until they reach one Exit the end plate 25 facing end.

Gemäß einer auf der rechten Seite der Figuren 8 und 9 abgebildeten Ausführungsform eines Lichtleiters 28 ist dieser in einer Aufnahmeöffnung 29 des Rückstrahlerfeldes 22 positioniert.According to an embodiment shown on the right side of FIGS. 8 and 9 a light guide 28 is in a receiving opening 29 of the Reflector field 22 positioned.

Claims (10)

Leuchte für Fahrzeuge mit einem ein Lichtabstrahlmittel und einen Rückstrahler aufnehmenden Gehäuse, das durch eine transparente Abschlussscheibe abgedeckt ist, wobei der Rückstrahler mit einer Anzahl von in einem Winkel zueinander angeordneten Optikflächen aufweisenden Rückstrahlelementen zu der Abschlussscheibe hin ausgerichtet ist, dadurch gekennzeichnet, dass eine Anzahl von Rückstrahlelementen (3, 11, 16, 23) jeweils ein Lichtabstrahlmittel (1, 13, 24, 28) zugeordnet ist und dass das Rückstrahlelement (3, 11, 16, 23) mit einem zumindest in der Ebene des Rückstrahlelementes (3, 11, 16, 23) erstreckenden Lichtdurchlass (12, 18) wirkverbunden ist.Light for vehicles with a housing receiving a light emitting means and a reflector, which is covered by a transparent cover lens, the reflector being aligned with a number of reflecting elements arranged at an angle to one another with optical surfaces towards the cover lens, characterized in that a number of A light emitting means (1, 13, 24, 28) is assigned to each of the reflecting elements (3, 11, 16, 23) and that the reflecting element (3, 11, 16, 23) is at least in the plane of the reflecting element (3, 11, 16, 23) extending light passage (12, 18) is operatively connected. Leuchte nach Anspruch 1, dadurch gekennzeichnet, dass eine Mehrzahl von verteilt angeordneten Lichtdurchlässen (12, 18) und Rückstrahlelementen (3, 11, 16, 23) vorgesehen ist, wobei die Lichtabstrahlmittel (1, 13, 24, 28) im Bereich der Lichtdurchlässe (12, 18) angeordnet sind.Luminaire according to claim 1, characterized in that a plurality of distributed light passages (12, 18) and retroreflective elements (3, 11, 16, 23) is provided, the light emitting means (1, 13, 24, 28) in the region of the light passages (12, 18) are arranged. Leuchte nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Optikflächen (4) des Rückstrahlelementes (3, 11, 16, 23) eine Reflexionsschicht aufweisen und derart zu der optischen Achse des Lichtabstrahlmittels (1, 13, 24, 28) angeordnet sind, dass das parallel zu der optischen Achse aus der Umgebung einfallende Licht nach einer mehrfachen Reflexion in seine Einfallsrichtung zurückreflektiert wird.Luminaire according to claim 1 or 2, characterized in that the optical surfaces (4) of the retroreflective element (3, 11, 16, 23) have a reflection layer and are arranged in such a way to the optical axis of the light emitting means (1, 13, 24, 28), that the light incident from the surroundings parallel to the optical axis is reflected back into its direction of incidence after multiple reflections. Leuchte nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Lichtabstrahlmittel (1) derart im Bereich des Lichtdurchlasses (2) angeordnet ist, dass die von dem Lichtabstrahlmittel (1) ausgesandten Lichtstrahlen an den Optikflächen (4) reflektierbar sind. Luminaire according to one of claims 1 to 3, characterized in that the light emitting means (1) is arranged in the region of the light passage (2) in such a way that the light beams emitted by the light emitting means (1) can be reflected on the optical surfaces (4). Leuchte nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Lichtdurchlass als eine Aufnahmeöffnung (2) ausgebildet ist zur Aufnahme zumindest eines vorderen Bereiches des Lichtabstrahlmittels (1).Luminaire according to one of claims 1 to 4, characterized in that the light passage is designed as a receiving opening (2) for receiving at least a front region of the light emitting means (1). Leuchte nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass ein Rückstrahlerfeld (8, 15, 22) vorgesehen ist mit einer Mehrzahl von in Lichtabstrahlrichtung (6) vor einem eine Mehrzahl von Lichtabstrahlmitteln (1, 13, 24, 28) aufweisenden Lichtabstrahlfeld (9) angeordneten Rückstrahlelementen (11, 16, 23) einerseits und korrespondierend zu den Lichtabstrahlmitteln angeordneten transparenten Lichtdurchlässen (12, 18) andererseits.Luminaire according to one of claims 1 to 4, characterized in that a retroreflector array (8, 15, 22) is provided with a plurality of in the light emission direction (6) in front of a plurality of light emission means (1, 13, 24, 28) having a light emission field (9) arranged reflecting elements (11, 16, 23) on the one hand and corresponding to the light emitting means arranged transparent light passages (12, 18) on the other. Leuchte nach Anspruch 6, dadurch gekennzeichnet, dass das Rückstrahlfeld (8) einstückig ausgebildet ist mit einer regelmäßigen Verteilung von Rückstrahlelementen (11) und Lichtdurchlässen (12) in einer ebenen oder bogenförmigen Fläche.Luminaire according to claim 6, characterized in that the reflective field (8) is formed in one piece with a regular distribution of reflective elements (11) and light passages (12) in a flat or curved surface. Leuchte nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Lichtabstrahlmittel als eine Glühlampe (19) oder als eine Leuchtdiode (1, 13) oder als ein der Leuchtdiode (1, 13) in Lichtabstrahlrichtung (6) vorgelagerter Lichtleiter (24, 28) ausgebildet ist.Luminaire according to one of claims 1 to 7, characterized in that the light emission means as an incandescent lamp (19) or as a light-emitting diode (1, 13) or as a light guide (24) upstream of the light-emitting diode (1, 13) in the light emission direction (6) 28) is formed. Leuchte nach Anspruch 8, dadurch gekennzeichnet, dass der Lichtleiter (24) einstückig mit dem transparenten Lichtdurchlass verbunden ist.Luminaire according to claim 8, characterized in that the light guide (24) is integrally connected to the transparent light passage. Leuchte nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das Rückstrahlelement (3, 11, 16, 23) aus einem Tripelprisma mit zumindest drei jeweils in einem stumpfen Winkel zueinander angeordneten Optikflächen (4) besteht, wobei die Längserstreckung der Optikflächen (4) größer ist als die zweifache Quererstreckung des Lichtdurchlasses (2) und/oder des Lichtabstrahlmittels (5).Luminaire according to one of claims 1 to 9, characterized in that the retroreflective element (3, 11, 16, 23) consists of a triple prism with at least three optical surfaces (4) each arranged at an obtuse angle, the longitudinal extent of the optical surfaces (4 ) is greater than twice the transverse extent of the light passage (2) and / or the light emitting means (5).
EP01116161A 2000-07-29 2001-07-04 Vehicle light Expired - Lifetime EP1176359B1 (en)

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DE10037005A DE10037005A1 (en) 2000-07-29 2000-07-29 Light for vehicles

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EP1519107A1 (en) * 2003-09-23 2005-03-30 Hella KGaA Hueck & Co. Vehicle lamp
EP1996857A1 (en) * 2006-03-13 2008-12-03 TIR Technology LP Optical device for mixing and redirecting light
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EP1176359A3 (en) 2004-10-06

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