DE4129094B4 - Signal light with LEDs as a light source for motor vehicles and their use for different signal light functions - Google Patents
Signal light with LEDs as a light source for motor vehicles and their use for different signal light functions Download PDFInfo
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- DE4129094B4 DE4129094B4 DE4129094A DE4129094A DE4129094B4 DE 4129094 B4 DE4129094 B4 DE 4129094B4 DE 4129094 A DE4129094 A DE 4129094A DE 4129094 A DE4129094 A DE 4129094A DE 4129094 B4 DE4129094 B4 DE 4129094B4
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
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- 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
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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
- F21S43/20—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
- F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
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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
- F21S43/20—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
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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
- F21S43/20—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
- F21S43/247—Light guides with a single light source being coupled into the light guide
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0075—Arrangements of multiple light guides
- G02B6/0078—Side-by-side arrangements, e.g. for large area displays
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- 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
- B60Q2400/00—Special features or arrangements of exterior signal lamps for vehicles
- B60Q2400/20—Multi-color single source or LED matrix, e.g. yellow blinker and red brake lamp generated by single lamp
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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]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
- G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/003—Lens or lenticular sheet or layer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/18—Edge-illuminated signs
- G09F2013/1804—Achieving homogeneous illumination
Abstract
Signalleuchte mit Leuchtdioden als Lichtquellen für Kraftfahrzeuge, mit einem Gehäuse (G) und/oder einer Befestigungseinrichtung (B) zum Ein- oder Anbau an oder in eine Kraftfahrzeugkarosserie, mit mindestens einer transparenten Abschlussscheibe (A) und mit einer Anzahl von Leuchtdioden (LED) als Lichtquellen, dadurch gekennzeichnet, dass jeder Leuchtdiode (LED) ein langgestrecktes Lichtleitelement (L) zugeordnet ist, dass mindestens eine Stirnfläche jedes Lichtleitelements (L) als eine Lichteinkoppelfläche (LK) für das Licht einer Leuchtdiode (LED) ausgebildet ist, dass die der Lichtaustrittsfläche abgewandte Seite jedes Lichtleitelements (L) lichtablenkende Mittel aufweist und dass mindestens zwei Lichtleitelemente (L) parallel nebeneinander hinter der Abschlußscheibe (A) angeordnet sind.signal light with light emitting diodes as light sources for motor vehicles, with a casing (G) and / or a fastening device (B) for installation or attachment on or in a motor vehicle body, with at least one transparent Lens (A) and with a number of light emitting diodes (LED) as light sources, characterized in that each light emitting diode (LED) is associated with an elongated light guide element (L) that at least an end face each light guide element (L) as a light input surface (LK) for the Light of a light emitting diode (LED) is formed, that facing away from the light exit surface Side of each light guide element (L) has light-deflecting means and that at least two light-guiding elements (L) parallel to each other behind the lens (A) are arranged.
Description
Die Erfindung betrifft eine Signalleuchte mit Leuchtdioden als Lichtquellen für Kraftfahrzeuge nach dem Oberbegriff des Anspruchs 1.The The invention relates to a signal light with light-emitting diodes as light sources for motor vehicles the preamble of claim 1.
Aus
der deutschen Offenlegungsschrift
Bei der bekannten Ausführungsform erweist sich als nachteilig, dass zur Erzeugung einer großen ausreichenden Signal- und Warnwirkung der Signalleuchte eine große Anzahl Leuchtdioden verwendet werden muß. Dies führt zu einer kostenintensiven, aufwendigen Konstruktion, die zudem eine hohe Stromaufnahme aufweist. Als besonders nachteilig erweist sich bei der bekannten Ausführungsform der Signalleuchte, dass zur Erzielung einer gleichmäßigen Ausleuchtung der transparenten Abdeckscheibe die Leuchtdioden aufgrund der bekannten Abstrahlcharakteristik in einem geringen Abstand zueinander angeordnet werden müssen, so dass eine große Abstrahlfläche, die auch eine große SignalG und Warnwirkung aufweist, nur erreichbar ist, wenn eine große Anzahl Leuchtdioden in der Signalleuchte angeordnet ist, was die Kosten für die Herstellung und die Stromaufnahme erhöht.at the known embodiment proves to be disadvantageous that to produce a large sufficient Signal and warning effect of the signal light a large number Light-emitting diodes must be used. This leads to a costly, expensive Construction, which also has a high power consumption. As special disadvantageous proves in the known embodiment of the signal lamp, that to achieve a uniform illumination the transparent cover the light-emitting diodes due to the known Abstrahlcharakteristik arranged at a small distance from each other Need to become, so a big one radiating surface, which is also a big one SignalG and warning effect, only achievable if a large number Light-emitting diodes arranged in the signal light, which is the cost for the Production and power consumption increased.
Der Erfindung liegt die Aufgabe zugrunde, eine Signalleuchte für Kraftfahrzeuge zu schaffen, die einfach und kostengünstig ist, die bei einer großen Leuchtkraft eine große Signal- und Warnwirkung aufweist, die bei einer geringen Stromaufnahme eine gleichmäßige Ausleuchtung gewährleistet und die möglichst platzsparend und flach ausgebildet ist.Of the Invention is based on the object, a signal light for motor vehicles to create that is simple and inexpensive, with a great luminosity a big Signal and warning effect, which at a low power consumption a uniform illumination guaranteed and the possible space-saving and flat.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß jeder Leuchtdiode ein langgestrecktes Lichtleitetement zugeordnet ist, daß mindestens eine Stirnfläche jedes Lichtteitelements als eine Lichteinkoppelfläche für das Licht einer Leuchtdiode ausgebildet ist, daß die der Lichtaustrittsfläche abgewandte Seite jedes Lichtleitelements lichtablenkende Mittel aufweist, und daß mindestens zwei Lichtleitelemente parallel nebeneinander hinter der Abchlußscheibe angeordnet sind.The The object is achieved in that each LED is assigned an elongated Lichtleitetement, that at least an end face each light title element as a light input surface for the light a light-emitting diode is formed such that the side facing away from the light exit surface each light guide element has light deflecting means, and that at least two light-guiding elements arranged parallel next to each other behind the Abchlußscheibe are.
Es ist von Vorteil, daß jeder Leuchtdiode ein Langgestrecktes Lichtleitelement zugeordnet ist, weil somit das von jeder Leuchtdiode erzeugte Licht auf einfache und kostengünstige Weise über ein langgestrecktes Lichtleitelement in eine gewünschte Lichtverteilung mit breiter flächiger Abstrahlung umgesetzt werden kann.It is an advantage that everyone LED is assigned an elongated light guide, because thus the light generated by each LED on simple and cost-effective Way over an elongated light guide in a desired light distribution with wider area Radiation can be implemented.
In diesem Zusammenhang ist es vorteilhaft, daß mindestens eine Stirnfläche jedes Lichtleitelements als eine Lichteinkoppelfläche für das. Licht einer Leuchtdiode. ausgebildet ist, weil somit eine bestmögliche Ausnutzung des von jeder Leuchtdiode bereit gestellten Lichts sichergestellt wird.In In this context, it is advantageous that at least one end face of each Light guide as a light input surface for the light of a light emitting diode. is formed, because thus the best possible use of each LED is provided ready light.
Dadurch, daß die der Lichtaustrittsfläche abgewandte Seite jedes Lichtleitelements Lichtablenkende Mittel aufweist, ergibt sich der Vorteil, daß das von der Leuchtdiode in das Licht Leitelement eingekoppelte Licht gezielt in eine Lichtabstrahlrichtung abgelenkt werden kann.Thereby, that the the light exit surface opposite side of each light-guiding element light-deflecting means has, there is the advantage that the of the light emitting diode in the light guide element coupled specifically deflected light in a Lichtabstrahlrichtung can be.
Vorteilhaft ist dabei, daß mindestens zwei Lichtleitelemente parallel nebeneinander hinter der Abschlußscheibe angeordnet sind, wodurch eine einfache und kostengünstige Konstruktion und Herstellbarkeit gewährleistet ist, eine großflächige Signalleuchte mit großer Leuchtkraft bei großer Signal- und Warnwirkung aufbaubar ist, die zudem bei einer gleichmäßigen Ausleuchtung eine geringe Stromaufnahme aufweist, da aufgrund der guten Ausnutzung des Lichts von den Leuchtdioden nur eine geringe Anzahl Leuchtdioden erforderlich ist. Als besonders vorteilhaft erweist sich hierbei, daß die Signalleuchte besonders platzsparend und flachbauend ausgebildet werden kann.Advantageous is that at least two light-guiding elements parallel next to each other behind the lens are arranged, creating a simple and inexpensive construction and manufacturability is, a large signal light with big ones Luminosity at large Signal and warning effect can be built, which also in a uniform illumination has a low power consumption, since due to the good use of the Light from the LEDs only a small number of LEDs is required. Particularly advantageous here is that the Signal light particularly space-saving and flat construction formed can be.
Es ist von Vorteil, wenn die Lichtleitelemente zylinderförmig ausgebildet sind, weil sich hierdurch zum einen eine einfache und kostengünstige Herstellbarkeit der Lichtleitelemente ergibt und zudem eine für Signalleuchten besonders günstige Lichtverteilung erreicht werden kann, da zum einen aufgrund der auftretenden Reflektionen in dem Lichtleitelement eine besonders günstige Verteilung des Lichts in dem Lichtleitelement erreicht wird und zum anderen aufgrund der durch die Zylinderform gegebenen Lupenwirkung bei Abstrahlung über die Mantelfläche eine besonders große Gleichverteilung bei der Lichtabstrahlung gewährleistet wird.It is advantageous if the light guide elements are cylindrical are, because on the one hand a simple and inexpensive manufacturability the light guide results and also one for signal lights especially favorable Light distribution can be achieved, as a result of the occurring reflections in the light guide a particular favorable Distribution of light in the light guide is achieved and on the other hand, due to the magnifying effect given by the cylindrical shape at radiation over the lateral surface one especially big Uniform distribution is ensured in the light emission.
Vorteilhaft ist, daß die lichtablenkenden Mittel der der Lichtaustrittsfläche abgewandten Seite jedes Lichtleitelements Prismen sind, weil sich somit zum einen eine einfache und kostengünstige Herstellbarkeit ergibt, da die Prismen gleichzeitig mit der Herstellung des Licht Leitelements, z. B. bei einem Kunststoffspritzverfahren, in den Körper des Lichtleitelements eingebracht werden können und zum anderen durch die Variation der Prismenwinkel und/oder der Prismenteilung und oder der Prismentiefe der Winkel der Streuung und/oder Ablenkung des Lichts, das von dem Lichtleiter ausgesendet wird, besonders einfach beeinflußt werden kann, wodurch je nach erforderter Lichtabstrahlung auf besonders einfache und kostengünstige Weise unterschiedliche Lichtabstrahlcharakteristiken erreicht werden können.It is advantageous that the light-deflecting means of the light exit surface opposite side of each light guide are prisms, because thus on the one hand a simple and inexpensive manufacturability results because the prisms simultaneously with the production of the light guide element, for. B. in a plastic injection molding process, can be introduced into the body of the light guide and on the other by the variation of the prism angle and / or the prism pitch and / or the prism depth of the angle of scattering and / or deflection of the light emitted by the light guide can be particularly easily influenced, whereby depending on the required light emission in a particularly simple and cost-effective manner different Lichtabstrahlcharakteristiken can be achieved.
Dadurch, daß die Lichtaustrittsfläche jeder Leuchtdiode in das Lichtleitelement hineinragt und daß die Form der Lichteinkoppelfläche jedes Lichtleitelements der Form der Lichtaustrittsfläche und der Lichtabstrahlcharakteristik der Leuchtdiode angepaßt ist, ergibt sich der Vorteil, daß das von der Leuchtdiode über seine Lichtaustrittsfläche abgestrahlte Licht je nach verwendeten Typ der Leuchtdiode bestmöglich in das Lichtleitelement eingekoppelt wird, wodurch die Lichtverluste möglichst gering gehalten werden.Thereby, that the Light-emitting surface each LED protrudes into the light guide and that the shape the light coupling surface each light guide of the shape of the light exit surface and the light emission characteristic of the light emitting diode is adapted, there is the advantage that the from the LED over its light exit surface radiated light depending on the type of LED used best possible in the light guide is coupled, whereby the light losses preferably be kept low.
In diesem Zusammenhang ist es vorteilhaft, daß jedes Lichtleitelement einen Lichteinkoppelbereich mit zu der Lichteinkoppelfläche sich verjüngendem Durchmesser aufweist, weil somit z. B. bei Leuchtdioden, die eine kleine Lichtaustrittsfläche haben, das Licht aber breit abstrahlen, das auf die Wandung des Lichteinkoppelbereichs treffende Licht aufgrund der wirksamen Totalreflexionen das Lichtleitelement nicht verlassen kann und in einem günstigen Winkel in das Lichtleitelement hinein reflektiert wird, wodurch sich eine besonders gute Nutzung des zur Verfügung gestellten Lichts ergibt und zudem die Gleichverteilung des Lichts in dem Lichtleitelement erhöht wird.In In this context, it is advantageous that each light guide a Lichteinkoppelbereich with to the Lichteinkoppelfläche itself tapering Has diameter, because thus z. B. in light emitting diodes, the one small light exit surface but radiate the light broadly on the wall of the Lichteinkoppelbereichs incident light due to the effective total reflections the light guide can not leave and at a favorable angle is reflected into the light guide inside, causing a particularly good use of the light provided and also the uniform distribution of the light in the light guide is increased.
Dadurch, daß alle Leuchtdioden auf einer Seite der parallel angeordneten Lichtleitelemente angeordnet sind, ergibt sich der Vorteil eines besonders einfachen und kostengünstigen Aufbaus der Signalleuchte.Thereby, that all Light-emitting diodes on one side of the parallel light guide elements are arranged, there is the advantage of a particularly simple and cost-effective Construction of the signal light.
Es ist von Vorteil, daß die Leuchtdioden bei benachbarten, parallel angeordneten Lichtleitelementen wechselseitig an beiden Seiten angeordnet sind, wodurch sich insbesondere bei einer großen Längenausdehnung der Lichtleitelemente und deren parallele Anordnung eine besonders gleichmäßige Ausleuchtung ergibt.It is an advantage that the Light-emitting diodes in adjacent, parallel light-guiding elements mutually arranged on both sides, resulting in particular at a great length extension the light guide elements and their parallel arrangement a special uniform illumination results.
In diesem Zusammenhang ist es besonders vorteilhaft, daß die der Lichteinkoppelfläche gegenüberliegende Fläche verspiegelt ist, wodurch die Gleichmäßigkeit der Ausleuchtung bei nur einseitig eingekoppeltem Licht erhöht wird.In In this context, it is particularly advantageous that the light injection opposing area is mirrored, thereby increasing the uniformity of illumination only unilaterally coupled light is increased.
Es ist von Vorteil, daß die Leuchtdioden an beiden Seiten der Lichtleitelemente angeordnet sind, wodurch insbesondere bei Lichtleitelementen großer Länge eine besonders gleichmäßige Ausleuchtung erreicht wird.It is an advantage that the Light emitting diodes are arranged on both sides of the light guide elements, whereby especially in light guide elements of great length achieved a particularly uniform illumination becomes.
Eine besonders einfach und kostengünstig herstellbare Ausführungsform der Signalleuchte ergibt sich, wenn die Leuchtdioden in Reihen auf mindestens einer gemeinsamen Leiterplatte angeordnet sind.A particularly easy and inexpensive to produce embodiment the signal light results when the LEDs in rows at least one common circuit board are arranged.
Es ist von Vorteil, daß die Abschlußscheibe lichtablenkende Mittel aufweist, wodurch zum einen die Gleichmäßigkeit der Ausleuchtung erhöht wird und zum anderen auf einfache und kostengünstige Weise vorgeschriebene und gewünschte Lichtverteilungen erzeugt werden können.It is an advantage that the Disc lens deflecting Having means, whereby on the one hand, the uniformity of the illumination is increased and on the other hand prescribed in a simple and cost-effective manner and desired Light distributions can be generated.
Dadurch, daß eine Anzahl parallel angeordneter Lichtleitelemente mit Leuchtdioden gleicher Farbe eine Gruppe bildet, die ein einheitliches Signallicht erzeugt, ist eine besonders platzsparende, flachbauende Signalleuchte herstellbar, die eine vorgegebene Leuchtfläche mit besonders gleichmäßiger Ausleuchtung aufweist und somit eine große Signal- und Warnwirkung hat.Thereby, that one Number of parallel light guide elements with light emitting diodes of the same color forms a group that has a uniform signal light generated, is a particularly space-saving, low-profile signal light can be produced, the given light area with particularly uniform illumination and thus has a large Signal and warning effect has.
In diesem Zusammenhang ist es von Vorteil, daß die Signalleuchte mindestens zwei Gruppen mit Leuchtdioden gleicher oder unterschiedlicher Farbe aufweist, wodurch auch besonders platzsparende und flache Signalleuchten herstellbar sind, die Signallicht gleicher oder unterschiedlicher Farbe gleichzeitig oder getrennt voneinander anzeigen können.In In this context, it is advantageous that the signal light at least has two groups of LEDs of the same or different color, which also produces particularly space-saving and flat signal lights are the signal light of the same or different color at the same time or separately from each other.
Dadurch, daß die parallelen Lichtleitelemente einer Gruppe einstückig ausgebildet sind, ergibt sich der Vorteil einer besonders einfachen und kostengünstigen Herstellbarkeit.Thereby, that the parallel light guide elements of a group are integrally formed, results the advantage of a particularly simple and inexpensive Manufacturability.
Es ist von Vorteil, wenn die Signalleuchte Verwendung als Schlußlicht und/oder Bremslicht und/oder Blinklicht und/oder Rückfahrscheinwerfer in Kraftfahrzeugen findet, daß die Signalleuchte platzsparend und besonders flach aufgebaut ist, ein geringes Gewicht und eine geringe Stromaufnahme aufweist.It is advantageous if the signal light use as tail light and / or Brake light and / or flashing light and / or reversing lights in motor vehicles finds that the Signal lamp is space-saving and has a particularly flat design low weight and low power consumption.
Entsprechend den Merkmalen des Anspruch 16 ergeben sich die Vorteile, daß das von den Leuchtdioden erzeugte Licht eine hohe Intensität bei einer breiten, kegelförmigen Abstrahlung aufweist, wodurch die Anzahl der Leuchtdioden gering gehalten werden kann und eine breite, großflächige Lichtabstrahlung erreicht wird.Corresponding the features of claim 16, there are the advantages that the of The light generated by the LEDs a high intensity at a broad, conical Has radiation, whereby the number of light emitting diodes low can be maintained and reaches a wide, large-scale light emission becomes.
Ein Ausführungsbeispiel des Erfindungsgegenstands ist in den Zeichnungen dargestellt und wird im folgenden anhand der Zeichnungen näher erläutert.One embodiment of the subject invention is shown in the drawings and will explained in more detail below with reference to the drawings.
Gleiche oder gleichwirkende Bauteile sind in allen Figuren mit gleichen Bezugszeichen versehen.Same or equivalent components are the same in all figures Provided with reference numerals.
Es zeigenIt demonstrate
Bei einem weiteren Ausführungsbeispiel, bei der die Signalleuchte z. B. in der öffnung einer Karosserie eines Kraftfahrzeugs eingesetzt wird, kann auf ein Gehäuse (G) verzichtet werden. In diesem Fall kann das Gehäuse (G) durch eine Befestigungseinrichtung (B) ersetzt werden.at a further embodiment, in which the signal light z. B. in the opening of a body of a Motor vehicle is used, can be dispensed with a housing (G). In this case, the housing can (G) are replaced by a fastening device (B).
Wie
in dem in
Zur Befestigung und sicheren Beabstandung der parallel angeordneten Lichtleitelemente (L) sind diese bei dem hier gezeigten Ausführungsbeispiel auf einer Befestigungseinrichtung (B) montiert. Bei einem anderen Ausführungsbeispiel können die Lichtleitelemente (L) einer Gruppe (GP) auch einstückig ausgebildet sein. to Fixing and safe spacing of the parallel arranged Light guide elements (L) are these in the embodiment shown here a fastening device (B) mounted. In another embodiment can the light-guiding elements (L) of a group (GP) are also integrally formed be.
Wie
in
Wie
aus
Claims (16)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4129094A DE4129094B4 (en) | 1991-09-02 | 1991-09-02 | Signal light with LEDs as a light source for motor vehicles and their use for different signal light functions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4129094A DE4129094B4 (en) | 1991-09-02 | 1991-09-02 | Signal light with LEDs as a light source for motor vehicles and their use for different signal light functions |
Publications (2)
Publication Number | Publication Date |
---|---|
DE4129094A1 DE4129094A1 (en) | 1993-03-04 |
DE4129094B4 true DE4129094B4 (en) | 2005-08-25 |
Family
ID=6439652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4129094A Expired - Lifetime DE4129094B4 (en) | 1991-09-02 | 1991-09-02 | Signal light with LEDs as a light source for motor vehicles and their use for different signal light functions |
Country Status (1)
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DE (1) | DE4129094B4 (en) |
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DE102009024800A1 (en) | 2009-06-10 | 2010-02-18 | Daimler Ag | Reading light function integrated handle for illuminating motor vehicle interior, has light source i.e. LED, light-exit opening, and light guide arranged between light source and opening, where opening has maximum area of specific value |
DE102011119231A1 (en) * | 2011-11-23 | 2013-05-23 | Audi Ag | Motor vehicle light, motor vehicle and method for operating a motor vehicle light |
DE102013007856A1 (en) | 2013-05-08 | 2014-11-13 | Audi Ag | Light guide and lighting device with the light guide |
US10838137B2 (en) | 2017-08-29 | 2020-11-17 | Varroc Lighting Systems, s.r.o. | Lighting device with high efficiency and uniformity |
DE102018126955A1 (en) | 2017-11-01 | 2019-05-02 | Varroc Lighting Systems, s.r.o. | Optical fiber optic system |
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