WO2004085917A1 - Indirectly illuminated headlight - Google Patents

Indirectly illuminated headlight Download PDF

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Publication number
WO2004085917A1
WO2004085917A1 PCT/EP2004/002991 EP2004002991W WO2004085917A1 WO 2004085917 A1 WO2004085917 A1 WO 2004085917A1 EP 2004002991 W EP2004002991 W EP 2004002991W WO 2004085917 A1 WO2004085917 A1 WO 2004085917A1
Authority
WO
WIPO (PCT)
Prior art keywords
light source
lamp
light
primary
secondary light
Prior art date
Application number
PCT/EP2004/002991
Other languages
German (de)
French (fr)
Inventor
Manfred Griesinger
Markus Hartlieb
Wilhelm Kincses
Hans-Georg Leis
Siegfried Rothe
Original Assignee
Daimlerchrysler Ag
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 Daimlerchrysler Ag filed Critical Daimlerchrysler Ag
Publication of WO2004085917A1 publication Critical patent/WO2004085917A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/0029—Spatial arrangement
    • B60Q1/0041—Spatial arrangement of several lamps in relation to each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
    • F21S41/125—Coloured light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/16—Laser light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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]

Definitions

  • the invention relates to a headlight according to the preamble of patent claim 1.
  • luminaires in such a way that their light outlet opening is designed in such a way that it fits into its surroundings as inconspicuously as possible.
  • the lamp in the area of the light exit opening is provided with a diffuser or a fluorescent layer (so-called milk glass), which means that the lamp fits relatively inconspicuously into a white background, such as a wall or ceiling.
  • a white background such as a wall or ceiling.
  • such a design harmonizes the appearance of the luminaire since internal structural features or the illuminants located in the luminaire cannot be recognized from the outside or can only be recognized in dim form.
  • the taillights of the vehicles are often provided with color covers in order to standardize the exterior view of the vehicle.
  • the appearance of the lights can be matched to the color of the body of the vehicle by carefully selecting the colors of these color covers.
  • the possible color scheme of the color screens is severely limited, particularly for legal reasons.
  • a vehicle lamp is known from DE 42 09 943 Cl, the color of which is adapted to the vehicle body when switched off. This adjustment is carried out by tinting the lamp, as is caused, for example, by coating the lens or reflector.
  • the adjustment is made here by an additional colored screen in the luminaire housing, which extends essentially parallel to the direction of light emission.
  • a motor vehicle headlight which appears colored when switched off, is also described in US 5010458 AI.
  • a wide variety of parts are provided with a colored coating in the interior of the headlamp, which is visible from the outside. This gives the colorless, transparent headlight cover a color appearance which corresponds to the color of the coating.
  • the subsequently published patent application DE 10248660.3-31 describes a luminaire which has an active and a passive operating mode and is capable of emitting light of different colors in the two operating modes.
  • An active operating mode is referred to when the luminaire emits light as part of its actual lighting function, while the passive operating mode is the lighting state in which the luminaire emits light around the luminaire with a lower power than the active mode to appear in a certain color; ie even in so-called passive operation, the luminaire actively emits light.
  • the lamp is operated in such a way that its light opening appears in a passive state in a color that essentially corresponds to the color of its immediate surroundings.
  • the luminaire emits light in a ner other than this color, essentially corresponding to the environment.
  • the object of the invention is to find a further luminaire which enables the luminaire to appear in the color of its surroundings through active light emission.
  • the lamp which is particularly suitable as a headlight of a motor vehicle, has a luminous element (3), which rather comprises a primary light source (1) and is covered by a lamp pane (4). Furthermore, the luminous element (3) is assigned a control means (30), by means of which the color of the light emitted by the light fixture is influenced in such a way that the light opening of the light fixture appears in a certain color. According to the invention, the luminous element (3) comprises a further secondary light source (2), which is connected to the influencing means (30) and is oriented in such a way that the light it emits only as a result of reflection, in particular at that of the first light source assigned reflector (5) from the
  • the control means (30) is designed in such a way that the primary and the secondary light source (1, 2) can be activated simultaneously.
  • two separate light sources are used in the context of the invention, on the one hand to implement the lighting function of the luminaire and on the other hand to influence the appearance of the luminaire.
  • the secondary light source (2) is integrated within the lamp body (3) itself.
  • the secondary light source (2) should be attached outside the light cone, which is generated by the primary light source (1) and possibly a reflector (5) assigned to it.
  • the secondary light source (2) can also be integrated into the luminaire body (3) in such a way that it is not or only slightly visible from the outside, so that the luminaire can be viewed from the outside, especially when the luminaire is inactive. medium, only slightly different from conventional lights.
  • the luminaire according to the invention is operated in a mode in which both the primary and the secondary light source are active at the same time.
  • the luminaire fulfills its actual lighting task in a new way (in the motor vehicle, for example illuminating the road area in front of the vehicle) and at the same time appears in a predetermined color scheme that differs from the luminescent color of the primary light source.
  • the primary and secondary light sources (1, 2) are active at the same time, it must be assumed that the much more intense light emission from the primary light source (1) outshines the light emission from the secondary light source (2). It is also conceivable that the light emitted by the secondary light source (2) influences that emitted by the primary light source (1) in an impermissible manner. Therefore, in an inventive manner, in order to ensure that the light emitted by the two light sources (1, 2) interferes as little as possible with one another, the secondary light source should be oriented in such a way that the light emitted by it after reflection in an angle emerges from the lamp which does not coincide with the main beam direction of the light radiation emanating from the primary light source (1) and possibly the reflector (5).
  • the primary light source (1) is a light source which preferably emits highly concentrated light, for example an arrangement of semiconductor light sources.
  • a light source could be, for example a field of luminescent diodes or semiconductor lasers.
  • a lens (6) for bundling the emitted light (20).
  • the reflector (5) only serves to reflect the light emitted by the secondary light source (2), the activation of the light source (2) by the control means (30). When looking at the lamp from outside, an observer perceives the appearance of the reflector illuminated by the lamp.
  • the viewer is above the light bundle (20). If he looks along the lines (10) at the lamp, he sees a certain area (11) of the reflector (5) of the lamp. This area is irradiated by the light (12) emitted by the secondary light source (2) and its appearance is changed by the control by the control means (30).
  • the primary light source (1) would generally emit the low beam (20), while pedestrians on the roadside, who watch the vehicle as they drive past, look at the headlamp from an elevated position along the line (10) and the colored appearance of the reflector ( 5) perceive at point (11).
  • the secondary light source (2) itself can emit colored light (12).
  • a light source corresponding to the light source described in the subsequently published patent application DE 10248660.3-31 could be used as the secondary light source (2).
  • a colored coating of the reflection zones in the lamp, for example the reflector can be dispensed with.
  • the lamp according to the invention can be used particularly profitably as a headlight or signal lamp in a motor vehicle.
  • Indirect lighting can also be used in a particularly advantageous manner in luminaires which emit light in the infrared or ultraviolet range in systems based on active lighting for improving night vision.
  • the problem of eye safety arises in particular in the case of lamps emitting infrared light, since road users do not perceive an activation of the lamp and could look into the activated lamp for too long.
  • there is the problem with infrared lighting that a number of road users can still perceive light in the near infrared range and thus perceive a red shimmer of light when an infrared light is activated; However, such a red light impression is not permitted on the front of a vehicle under road traffic law. In these cases it could be from the primary light source (1) emitted infrared light (20) are superimposed by white light (12) emitted by the secondary light source (2).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

According to motor vehicle design, the rear lights of vehicles are often provided with colour screens in order to homogenise the outside appearance of the vehicle. Due to a targeted selection of the colours of said colour screens, the appearance of the lights can be adapted to the colour of the bodywork of the vehicle. As the light radiated from the lights is influenced, however, by the colouring of the colour screens, the possible colouring of the colour screens is greatly limited, especially for legal reasons. The invention thus provides a lamp which is especially suitable as the headlight of a motor vehicle. Said lamp consists of a luminous body (3) comprising a primary illuminant (1) and covered by a luminous disk (4). A means (30) is associated with the luminous body (3), enabling the colour of the light emitted by the lamp to be influenced such that the opening of the lamp appears to be a particular colour. Advantageously, the luminous body (3) also comprises a secondary light source (2) which is connected to the control means (30) and is oriented in such a way that the light emitted thereby only emerges from the lamp as a result of reflection, especially by the reflector (5) associated with the first light source. The control means (30) is thus embodied in such a way that the primary and secondary light sources (1,2) can be simultaneously activated.

Description

Indirekt beleuchteter ScheinwerferHeadlights with indirect lighting
Die Erfindung betrifft einen Scheinwerfer nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a headlight according to the preamble of patent claim 1.
Insbesondere aus gestalterischen Erwägungen ist es bekannt, Leuchten so auszugestalten, dass deren Lichtaustrittsöffnung in ihrer Anmutung so ausgestaltet wird, dass sie sich möglichst unauffällig in ihre Umgebung einpasst . Im einfachsten Fall wird die Lampe im Bereich der Lichtaustrittsöffnung mit einem Diffusor oder einer LeuchtstoffSchicht versehen (sog. Milchglas), was bewirkt, dass sich die Leuchte relativ unauffällig in einen weißen Hintergrund, wie Wand oder Decke, einfügt. Zum anderen harmonisiert eine solche Ausgestaltung das Erscheinungsbild der Leuchte da interne konstruktive Merkmale oder die in der Leuchte befindlichen Leuchtmittel von außen nicht oder nur schemenhaft zu erkennen sind. Im Kraftfahrzeugdesign werden häufig die Rücklichter der Fahrzeuge mit Farbblenden versehen, um die Außenansicht des Fahrzeugs zu vereinheitlichen. Durch gezielte Wahl der Farben dieser Farbblenden lässt sich die Anmutung der Leuchten an die Farbe der Karosserie des Fahrzeugs angleichen. Da das von den Leuchten ausgesandte Licht jedoch durch die Farbgebung der Farbblenden beeinflusst wird, ist insbesondere aus gesetzlichen Gründen die mögliche Farbgebung der Farbblenden stark beschränkt. Aus dem Automobilbereich ist aus der DE 42 09 943 Cl eine Fahrzeugleuchte bekannt, deren farbliche Gestaltung im ausgeschaltetem Zustand an die Fahrzeugkarosserie angepasst ist . Diese Anpassung erfolgt durch eine Tönung der Leuchte, wie sie zum Beispiel durch eine Beschichtung der Streuscheibe o- der des Reflektors hervorgerufen wird. Die Anpassung erfolgt hierbei jedoch durch eine zusätzlich im Leuchtengehäuse angebrachte gefärbte Blende, welche sich im wesentlichen parallel zur Lichtabstrahlrichtung erstreckt .From design considerations in particular, it is known to design luminaires in such a way that their light outlet opening is designed in such a way that it fits into its surroundings as inconspicuously as possible. In the simplest case, the lamp in the area of the light exit opening is provided with a diffuser or a fluorescent layer (so-called milk glass), which means that the lamp fits relatively inconspicuously into a white background, such as a wall or ceiling. On the other hand, such a design harmonizes the appearance of the luminaire since internal structural features or the illuminants located in the luminaire cannot be recognized from the outside or can only be recognized in dim form. In vehicle design, the taillights of the vehicles are often provided with color covers in order to standardize the exterior view of the vehicle. The appearance of the lights can be matched to the color of the body of the vehicle by carefully selecting the colors of these color covers. However, since the light emitted by the luminaires is influenced by the color of the color screens, the possible color scheme of the color screens is severely limited, particularly for legal reasons. From the automotive sector, a vehicle lamp is known from DE 42 09 943 Cl, the color of which is adapted to the vehicle body when switched off. This adjustment is carried out by tinting the lamp, as is caused, for example, by coating the lens or reflector. However, the adjustment is made here by an additional colored screen in the luminaire housing, which extends essentially parallel to the direction of light emission.
Ein Kraftfahrzeugscheinwerfer, welcher im ausgeschalteten Zustand farbig anmutet, wird ebenso in der US 5010458 AI beschrieben. Hierbei werden unterschiedlichste Teile im von außen einsehbaren Innenbereich des Scheinwerfers mit einer far- bigen Beschichtung versehen. Hierdurch erhält die an sich farblose, durchsichtige Scheinwerferabdeckung eine Farbanmu- tung, welche der Farbe der Beschichtung entspricht.A motor vehicle headlight, which appears colored when switched off, is also described in US 5010458 AI. A wide variety of parts are provided with a colored coating in the interior of the headlamp, which is visible from the outside. This gives the colorless, transparent headlight cover a color appearance which corresponds to the color of the coating.
Die nachveröffentlichte Patentanmeldung DE 10248660.3-31 be- schreibt eine Leuchte, welche über einen aktiven und einen passiven Betriebsmodus verfügt, und in der Lage ist in den beiden Betriebsmoden Licht unterschiedlicher Farbe auszustrahlen. Von einen aktiven Betriebsmodus wird hierbei dann gesprochen, wenn die Leuchte Licht im Rahmen ihrer eigentli- chen Beleuchtungsfunktion ausstrahlt, während mit dem passiven Betriebsmodus, derjenige Leuchtzustand bezeichnet wird, in welchem die Leuchte Licht mit einer gegenüber dem aktiven Modus verringerter Leistung aussendet um die Leuchte in einer bestimmten Farbe anmuten zu lassen; d.h. auch im sogenannten passiven Betrieb, strahlt die Leuchte aktiv Licht ab. Dabei wird die Leuchte so betrieben, dass deren Leuchtöffnung im passiven Zustand in einer Farbe anmutet, welche im wesentlichen der Farbe ihrer direkten Umgebung entspricht. Dabei strahlt die Leuchte bei im aktiven Betriebsmodus Licht in ei- ner anderen als dieser, im wesentlichen der Umgebung entsprechenden Farbe ab .The subsequently published patent application DE 10248660.3-31 describes a luminaire which has an active and a passive operating mode and is capable of emitting light of different colors in the two operating modes. An active operating mode is referred to when the luminaire emits light as part of its actual lighting function, while the passive operating mode is the lighting state in which the luminaire emits light around the luminaire with a lower power than the active mode to appear in a certain color; ie even in so-called passive operation, the luminaire actively emits light. The lamp is operated in such a way that its light opening appears in a passive state in a color that essentially corresponds to the color of its immediate surroundings. The luminaire emits light in a ner other than this color, essentially corresponding to the environment.
Aufgabe der Erfindung ist es eine weitere Leuchte zu finden, welche durch aktive Lichtausstrahlung eine Anmutung der Leuchte in der Farbe ihrer Umgebung ermöglicht .The object of the invention is to find a further luminaire which enables the luminaire to appear in the color of its surroundings through active light emission.
Die Aufgabe wird durch eine Leuchte mit den Merkmalen des unabhängigen Anspruchs 1 gelöst . Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung werden durch die Unteransprüche beschrieben.The object is achieved by a lamp with the features of independent claim 1. Advantageous refinements and developments of the invention are described by the subclaims.
Die Leuchte, welche sich insbesondere als Scheinwerfer eines Kraftfahrzeugs eignet, weist einen Leuchtkörper (3) auf, wel- eher eine primäre Lichtquelle (1) umfasst und durch eine Leuchtenscheibe (4) abgedeckt ist. Des weiteren ist dem Leuchtkörper (3) ein Steuermittel' (30) zugeordnet, durch welches sich die Farbe des durch die Leuchte ausgesandten Lichts so beeinflussen last, dass die Leuchtöffnung der Leuchte in einer bestimmten Farbe anmutet. In erfinderischer Weise umfasst der Leuchtkörper (3) eine weitere sekundäre Lichtquelle (2) , welche mit dem Beeinflussungsmittel (30) in Verbindung steht und so ausgerichtet ist, dass das von ihr emittierte Licht nur in Folge von Reflektion, insbesondere an dem der ersten Lichtquelle zugeordneten Reflektor (5) aus derThe lamp, which is particularly suitable as a headlight of a motor vehicle, has a luminous element (3), which rather comprises a primary light source (1) and is covered by a lamp pane (4). Furthermore, the luminous element (3) is assigned a control means (30), by means of which the color of the light emitted by the light fixture is influenced in such a way that the light opening of the light fixture appears in a certain color. According to the invention, the luminous element (3) comprises a further secondary light source (2), which is connected to the influencing means (30) and is oriented in such a way that the light it emits only as a result of reflection, in particular at that of the first light source assigned reflector (5) from the
Leuchte austritt. Hierbei ist das Steuermittel (30) so ausgestaltet, dass die primäre und die sekundäre Lichtquelle (1,2) gleichzeitig aktiviert werden können. In besonders vorteilhafter Weise werden im Rahmen der Erfindung zwei getrenn- te Lichtquellen verwandt um zum einen die Beleuchtungsfunktion der Leuchte zu realisieren und um zum anderen die Anmutung der Leuchte zu beeinflussen. Durch die Aufteilung der Funktionalität auf zwei individuelle Lichtquellen (1,2) wird in gewinnbringende Weise die Möglichkeit geschaffen hierzu auf herkömmliche Leuchtmittel zurückzugreifen. Ein komplexes Leuchtmittel, welches durch aktive Lichtausstrahlung sowohl die eigentliche Beleuchtungsaufgabe der Leuchte, als auch die Beeinflussung deren Anmutung ermöglicht ist nicht notwendig. Vorteilhaft ist zudem, dass es durch geeignete Ausrichtung o- der Auswahl der beiden Lichtquellen (1,2) möglich wird deren gegenseitige Beeinflussung in Bezug auf die Überlagerung des von ihnen ausgestrahlten Lichts zu minimieren, so dass ein sinnvoller gleichzeitiger Betrieb beider Lichtquellen (1,2) möglich wird. Ein solch gleichzeitiger Betrieb könnte sodann bewirken, dass die Leuchte für einen Betrachter in einer bestimmten Farbe anmutet, gleichzeitig aber die von ihr zu beleuchtende Umgebung in einer im wesentlichen anderen Farbe ausleuchtet .Lamp emerges. The control means (30) is designed in such a way that the primary and the secondary light source (1, 2) can be activated simultaneously. In a particularly advantageous manner, two separate light sources are used in the context of the invention, on the one hand to implement the lighting function of the luminaire and on the other hand to influence the appearance of the luminaire. By dividing the functionality into two individual light sources (1, 2), the opportunity is created in a profitable way to use conventional lamps. A complex illuminant, which enables the actual lighting task of the lamp as well as influencing its appearance through active light emission is not necessary. It is also advantageous that suitable alignment or selection of the two light sources (1, 2) makes it possible to minimize their mutual influence with respect to the superimposition of the light they emit, so that sensible simultaneous operation of both light sources (1, 2) becomes possible. Such simultaneous operation could then result in the lamp appearing to a viewer in a certain color, but at the same time illuminating the environment to be illuminated by it in a substantially different color.
Im nachfolgenden wird die Erfindung detailliert mittels Ausführungsbeispielen und anhand der Figur erläutert.In the following, the invention is explained in detail by means of exemplary embodiments and with reference to the figure.
In besonders vorteilhafter Weise ist die sekundäre Lichtquel- le (2) innerhalb des Leuchtenkörper (3) selbst integriert.In a particularly advantageous manner, the secondary light source (2) is integrated within the lamp body (3) itself.
Auf diese Weise wird sie ebenfalls durch die den Leuchtenkörper gegen Umwelteinflüsse abschirmende Scheibe (4) geschützt.In this way it is also protected by the pane (4) shielding the lamp body against environmental influences.
Um die Lichtabstrahlung der primären Lichtquelle (1) nicht zu beeinflussen, sollte die sekundäre Lichtquelle (2) , außerhalb des Lichtkegels angebracht sein, welcher durch die primäre Lichtquelle (1) und eventuell einem dieser zugeordnetem Reflektor (5) erzeugt wird. Insbesondere bietet sich eine Integration am unteren Rand des Leuchtenkörpers, von einem Re- flektor (5) entfernt, im Bereich des Leuchtenglases (4) an. Hierbei kann die sekundäre auch Lichtquelle (2) so in den Leuchtenkörper (3) integriert werden, dass sie von außerhalb nicht oder nur wenig sichtbar ist, so dass sich die Leuchte von außen besehen, insbesondere bei Inaktivität der Leucht- mittel, nur unwesentlich von herkömmlichen Leuchten unterscheidet .In order not to influence the light radiation of the primary light source (1), the secondary light source (2) should be attached outside the light cone, which is generated by the primary light source (1) and possibly a reflector (5) assigned to it. In particular, integration at the lower edge of the lamp body, away from a reflector (5), in the area of the lamp glass (4) is advisable. Here, the secondary light source (2) can also be integrated into the luminaire body (3) in such a way that it is not or only slightly visible from the outside, so that the luminaire can be viewed from the outside, especially when the luminaire is inactive. medium, only slightly different from conventional lights.
Es ist sehr wohl denkbar, dass die erfindungsgemäße Leuchte in einem Modus betrieben wird, in welchem sowohl die primäre als auch die sekundäre Lichtquelle gleichzeitig aktiv sind. Dies bedeutet, dass die Leuchte in neuartiger Weise sowohl ihre eigentliche Beleuchtungsaufgabe erfüllt (im Kraftfahrzeug, beispielsweise das Ausleuchten des vor dem Fahrzeug liegenden Fahrbahnbereichs) als auch gleichzeitig in einer vorbestimmten Farbgebung anmutet, welche sich von der Leuchtfarbe der primären Lichtquelle unterscheidet.It is very conceivable that the luminaire according to the invention is operated in a mode in which both the primary and the secondary light source are active at the same time. This means that the luminaire fulfills its actual lighting task in a new way (in the motor vehicle, for example illuminating the road area in front of the vehicle) and at the same time appears in a predetermined color scheme that differs from the luminescent color of the primary light source.
Es ist in diesem Fall, bei welchem die primäre und sekundäre Lichtquelle (1,2) gleichzeitig aktiv sind, jedoch davon auszugehen, dass die wesentlich intensivere Lichtausstrahlung der primären Lichtquelle (1) die Lichtausstrahlung der sekundären Lichtquelle (2) überstrahlt. Auch ist es denkbar, dass das von der sekundären Lichtquelle (2) abgestrahlte Licht dasjenige der primären Lichtquelle (1) abgestrahlte in unzulässiger Weise beeinflusst. Deshalb sollte in erfinderischer Weise, um zu erreichen, dass sich das von den beiden Lichtquellen (1,2) emittierte Licht so wenig wie möglich gegenseitig beeinträchtigt, die sekundäre Lichtquelle so ausgerichtet werden, dass das von ihr ausgesandte Licht nach der Reflekti- on in einem Winkel aus der Leuchte austritt, welcher nicht mit der Hauptstrahlrichtung der von der primären Lichtquelle (1) und gegebenenfalls dem Reflektor (5) ausgehenden Lichtstrahlung zusammenfällt. Eine solchermaßen mögliche vorteil- hafte Anordnung ist in der Figur dargestellt. Hierbei handelt es sich bei der primären Lichtquelle (1) um eine Lichtquelle, welche vorzugsweise stark gebündeltes Licht ausstrahlt, beispielsweise eine Anordnung von Halbleiterlichtquellen. Bei einer solchen Lichtquelle könnte es sich beispielsweise um ein Feld von Lumineszenzdioden oder Halbleiterlasern handeln. Bei einer solchen Anordnung kann im allgemeinen in Bezug auf die primäre Lichtquelle (1) auf einen dieser zugeordneten Reflektor verzichtet werden. Denkbar ist es zur Bündelung des ausgestrahlten Lichts (20) eine Linse (6) vorzusehen. Bei der in der Figur aufgezeigten Leuchte dient der Reflektor (5) nur zur Reflektion des von der sekundären Lichtquelle (2) ausgestrahlten Lichts, wobei die Aktivierung der Lichtquelle (2) durch das Steuermittel (30) erfolgt. Beim Blick auf die Leuchte von Außerhalb, nimmt ein Betrachter die Anmutung des von der Leuchte bestrahlten Reflektors war. In dem in der Figur dargestellten Fall wird davon ausgegangen, dass der Betrachter sich oberhalb der Leuchtbündels (20) befindet. Blickt er entlang der Linien (10) auf die Leuchte so sieht er einen bestimmten Bereich (11) des Reflektors (5) der Leuchte ein. Dieser Bereich wird durch das von der sekundären Lichtquelle (2) ausgestrahlte Licht (12) bestrahlt und über die An- Steuerung durch das Steuermittel (30) in seiner Anmutung verändert werden. Ein solcher Fall wäre beispielsweise, beim Einbau einer entsprechen Leuchte in ein Kraftfahrzeug gegeben. Die primäre Leuchtquelle (1) würde hierbei im allgemeinen das Abblendlicht (20) ausstrahlen, während Fußgänger am Straßenrand, welche das Fahrzeug bei der Vorbeifahrt beobachten von einer erhöhten Blickposition auf den Scheinwerfer entlang der Linie (10) schauen und die farbige Anmutung des Reflektors (5) an der Stelle (11) wahrnehmen.In this case, in which the primary and secondary light sources (1, 2) are active at the same time, it must be assumed that the much more intense light emission from the primary light source (1) outshines the light emission from the secondary light source (2). It is also conceivable that the light emitted by the secondary light source (2) influences that emitted by the primary light source (1) in an impermissible manner. Therefore, in an inventive manner, in order to ensure that the light emitted by the two light sources (1, 2) interferes as little as possible with one another, the secondary light source should be oriented in such a way that the light emitted by it after reflection in an angle emerges from the lamp which does not coincide with the main beam direction of the light radiation emanating from the primary light source (1) and possibly the reflector (5). Such an advantageous arrangement is shown in the figure. The primary light source (1) is a light source which preferably emits highly concentrated light, for example an arrangement of semiconductor light sources. Such a light source could be, for example a field of luminescent diodes or semiconductor lasers. With such an arrangement, it is generally possible to dispense with a reflector assigned to the primary light source (1). It is conceivable to provide a lens (6) for bundling the emitted light (20). In the luminaire shown in the figure, the reflector (5) only serves to reflect the light emitted by the secondary light source (2), the activation of the light source (2) by the control means (30). When looking at the lamp from outside, an observer perceives the appearance of the reflector illuminated by the lamp. In the case shown in the figure, it is assumed that the viewer is above the light bundle (20). If he looks along the lines (10) at the lamp, he sees a certain area (11) of the reflector (5) of the lamp. This area is irradiated by the light (12) emitted by the secondary light source (2) and its appearance is changed by the control by the control means (30). Such a case would be given, for example, when installing a corresponding light in a motor vehicle. The primary light source (1) would generally emit the low beam (20), while pedestrians on the roadside, who watch the vehicle as they drive past, look at the headlamp from an elevated position along the line (10) and the colored appearance of the reflector ( 5) perceive at point (11).
Es ist in vorteilhafter Weise denkbar die Bereiche von denen das von der sekundären Lichtquelle (2) ausgestrahlte Licht (12) reflektiert wird mit einem farbigen Material zu beschichten. Hierdurch mutet der Hintergrund der Leuchte bereits in ihrem passiven Zustand farbig an. Durch Beleuchtung dieses farbig beschichteten Reflektors mit weißem von der se- kundären Lichtquelle (2) stammenden Lichts (12) wird die farbliche Anmutung weiter verstärkt.It is advantageously conceivable to coat the areas from which the light (12) emitted by the secondary light source (2) is reflected with a colored material. As a result, the background of the lamp already appears colored in its passive state. By illuminating this colored coated reflector with white from the Secondary light source (2) originating light (12), the color appearance is further enhanced.
Gleichwohl kann die sekundäre Lichtquelle (2) selbst farbiges Licht (12) ausstrahlen. So könnte beispielsweise ein, der in der nachveröffentlichten Patentanmeldung DE 10248660.3-31 beschriebenen Lichtquelle entsprechendes Leuchtmittel als sekundäres Leuchtmittel (2) verwendet werden. In einem solchen Fall kann auf eine farbige Beschichtung der Reflektionszonen in der Leuchte, beispielsweise des Reflektors, verzichtet werden. Andererseits ist es gleichwohl aber auch denkbar die Reflektionszonen mit einem Material zu beschichten, welches die farbige Lichtausstrahlung verstärkt oder verändert. So könnte auf diese Weise auch eine Färb- oder Intensitätsvaria- tion der farblichen Anmutung der Leuchte über die Reflekti- onszone hinweg realisiert werden.Nevertheless, the secondary light source (2) itself can emit colored light (12). For example, a light source corresponding to the light source described in the subsequently published patent application DE 10248660.3-31 could be used as the secondary light source (2). In such a case, a colored coating of the reflection zones in the lamp, for example the reflector, can be dispensed with. On the other hand, it is also conceivable to coat the reflection zones with a material that enhances or changes the colored light emission. In this way, a color or intensity variation of the color appearance of the luminaire could be realized across the reflection zone.
Die erfindungsgemäße Leuchte lässt sich besonders gewinnbringend als Scheinwerfer oder Signalleuchte bei einem Kraftfahr- zeug verwenden. In besonders vorteilhafter Weise lässt sich die indirekte Beleuchtung auch bei Leuchten einsetzten, welche bei auf aktiver Beleuchtung basierenden Systemen zur NachtSichtverbesserung, Licht im infraroten oder ultravioletten Bereich ausstrahlen. Insbesondere bei infrarotem Licht ausstrahlenden Leuchten ergibt sich zum einen das Problem der Augensicherheit, da Verkehrsteilnehmer eine Aktivierung der Leuchte nicht wahrnehmen und zu lange in die aktivierte Leuchte schauen könnten. Zum anderen ergibt sich bei infraroter Beleuchtung das Problem, das etliche Verkehrsteilnehmer noch Licht im nahen infraroten Bereich wahrnehmen können und so bei einer aktivierten Infrarot-Leuchte noch einen roten Lichtschimmer wahrnehmen; ein solcher roter Lichteindruck ist an der Frontseite eines Fahrzeuges straßenverkehrsrechtlich jedoch nicht zulässig. In diesen Fällen könnte das von der primären Lichtquelle (1) ausgestrahlte infrarote Licht (20) , durch von der sekundären Lichtquelle (2) ausgestrahltes weißes Licht (12) überlagert werden. The lamp according to the invention can be used particularly profitably as a headlight or signal lamp in a motor vehicle. Indirect lighting can also be used in a particularly advantageous manner in luminaires which emit light in the infrared or ultraviolet range in systems based on active lighting for improving night vision. The problem of eye safety arises in particular in the case of lamps emitting infrared light, since road users do not perceive an activation of the lamp and could look into the activated lamp for too long. On the other hand, there is the problem with infrared lighting that a number of road users can still perceive light in the near infrared range and thus perceive a red shimmer of light when an infrared light is activated; However, such a red light impression is not permitted on the front of a vehicle under road traffic law. In these cases it could be from the primary light source (1) emitted infrared light (20) are superimposed by white light (12) emitted by the secondary light source (2).

Claims

Patentansprüche claims
1. Leuchte, insbesondere Scheinwerfer eines Kraftfahrzeugs, mit einem Leuchtkörper (3) , umfassend eine primäre Lichtquel- le (1) , zur Abstrahlung des für die eigentliche Beleuchtungsaufgabe notwendigen Lichts und eine Leuchtenscheibe (4) zum Schutz der primären Lichtquelle (1) vor Umwelteinflüssen, wobei die Leuchte über ein Steuermittel (30) verfügt, durch welches sich die Farbe des durch die Leuchte ausgesandten Lichts so beeinflussen l st, dass die Leuchtöffnung der Leuchte in einer bestimmten Farbe anmutet, d a d u r c g e k e n n z e i c h n e t , dass der Leuchtkörper eine weitere, durch das Steuermittel (30) ansteuerbare sekundäre Lichtquelle (2) umfasst, wel- ehe so ausgerichtet ist, dass das von ihr emittierte Licht in Folge von Reflektion, insbesondere an einem dem Leuchtkörper zugeordneten Reflektor (5), aus der Leuchte austritt, und dass das Steuermittel (30) so ausgebildet ist, dass die primäre und die sekundäre Lichtquelle (1,2) sowohl einzeln als auch gleichzeitig aktiviert werden können.1. Luminaire, in particular headlights of a motor vehicle, with a luminous element (3), comprising a primary light source (1) for emitting the light required for the actual lighting task and a lamp disc (4) for protecting the primary light source (1) Environmental influences, the lamp having a control means (30) by which the color of the light emitted by the lamp can be influenced in such a way that the light opening of the lamp appears in a certain color, characterized in that the lamp body has another, by which Control means (30) includes controllable secondary light source (2), which is oriented so that the light emitted by it emerges from the lamp as a result of reflection, in particular at a reflector (5) assigned to the luminous element, and that the control means (30) is designed so that the primary and the secondary light source (1,2) both individually and the same can be activated timely.
2. Vorrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass die sekundäre Lichtquelle (2) im Leuchtenkδrper integ- riert ist.2. Device according to claim 1, so that the secondary light source (2) is integrated in the luminaire body.
3. Vorrichtung nach Anspruch 2 , d a d u r c h g e k e n n z e i c h n e t , dass die sekundäre Lichtquelle (2) an einer Stelle außerhalb der Lichtabstrahlung (20) der primären Lichtquelle (1) angeordnet ist.3. Device according to claim 2, characterized in that the secondary light source (2) is arranged at a point outside the light radiation (20) of the primary light source (1).
4. Vorrichtung nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass die sekundäre Lichtquelle (2) so ausgerichtet ist, dass der Reflektor (5) das von ihr ausgestrahlte Licht im wesentlichen in die Richtung ausstrahlt, welche nicht mit der HauptStrahlrichtung der von der primären Lichtquelle (1) aus- gehenden Lichts (20) zusammenf llt.4. Device according to one of the preceding claims, characterized in that the secondary light source (2) is oriented so that the reflector (5) emits the light emitted by it essentially in the direction which is not with the main beam direction of the primary light source (1) outgoing light (20) coincides.
5. Vorrichtung nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass der Reflektor (5) mit einem farbigen Material beschich- tet ist.5. Device according to one of the preceding claims, d a d u r c h g e k e n n z e i c h n e t that the reflector (5) is coated with a colored material.
6. Vorrichtung nach Anspruch 5, d a d u r c h g e k e n n z e i c h n e t , dass die sekundäre Lichtquelle (2) eine im wesentlichen wei- ßes Licht ausstrahlende Lichtquelle ist.6. The device as claimed in claim 5, so that the secondary light source (2) is an essentially white light emitting light source.
7. Vorrichtung nach einem der Ansprüche 1 bis 5, d a d u r c h g e k e n n z e i c h n e t , dass die sekundäre Lichtquelle (2) eine ein farbiges Licht ausstrahlende Lichtquelle ist.7. Device according to one of claims 1 to 5, so that the secondary light source (2) is a light source that emits colored light.
8. Vorrichtung nach Anspruch 7, d a d u r c h g e k e n n z e i c h n e t , dass die sekundäre Lichtquelle (2) mit einem Mittel versehen ist, durch welches die Farbe des ausgestrahlten Lichts variiert werden kann.8. The device according to claim 7, so that the secondary light source (2) is provided with a means by which the color of the emitted light can be varied.
9. Vorrichtung nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass die sekundäre Lichtquelle (2) durch eine oder eine Mehrzahl von Halbleiterlichtquellen, insbesondere Lumineszenzdioden, gebildet wird.9. Device according to one of the preceding claims, characterized in that the secondary light source (2) is formed by one or a plurality of semiconductor light sources, in particular luminescent diodes.
10. Verwendung der Leuchte nach einem der Ansprüche 1 bis 10, als Scheinwerfer oder Signalleuchte in einem Kraftfahrzeug. 10. Use of the lamp according to one of claims 1 to 10, as a headlight or signal lamp in a motor vehicle.
PCT/EP2004/002991 2003-03-26 2004-03-22 Indirectly illuminated headlight WO2004085917A1 (en)

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EP1684004A1 (en) * 2005-01-21 2006-07-26 Valeo Vision Vehicle headlight with two lighting beams
FR3004397A1 (en) * 2013-04-10 2014-10-17 Peugeot Citroen Automobiles Sa PROJECTOR EQUIPPED WITH REMOTE LUMINOUS SOURCES COMPRISING A BACKLIGHT MODULE

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DE102010055332A1 (en) * 2010-12-21 2012-06-21 Volkswagen Ag Lighting device e.g. head light for vehicle e.g. motor car, has auxiliary light source provided in housing such that light emission is provided to interior of housing and emitted light beams are not directly emitted on light cover lens
DE102010055329A1 (en) * 2010-12-21 2012-06-21 Volkswagen Ag Lighting device for vehicle, has light module, which is arranged inside housing and has light coupling surface, over which light beams of light source are injected

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US5010458A (en) * 1989-09-01 1991-04-23 General Motors Corporation Headlamp assembly
DE29620583U1 (en) * 1996-11-27 1997-02-13 Kundisch Microtech GmbH & Co. KG, 78056 Villingen-Schwenningen Lighting fixture with continuously adjustable color change of the light and the light cone
DE10065020A1 (en) * 2000-09-04 2002-03-14 Bosch Gmbh Robert Motor vehicle head lamp with integral parking lamps, uses light guide under reflector directing light back onto the reflector for parking illumination
US20020196641A1 (en) * 2001-06-26 2002-12-26 Norbert Brun Lighting or indicating device for a motor vehicle

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Publication number Priority date Publication date Assignee Title
EP1684004A1 (en) * 2005-01-21 2006-07-26 Valeo Vision Vehicle headlight with two lighting beams
FR2881207A1 (en) * 2005-01-21 2006-07-28 Valeo Vision Sa OPTICAL MODULE FOR A LIGHTING DEVICE FOR A MOTOR VEHICLE, PROVIDED TO GIVE AT LEAST ONE MAIN BEAM WITH A CUT
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FR3004397A1 (en) * 2013-04-10 2014-10-17 Peugeot Citroen Automobiles Sa PROJECTOR EQUIPPED WITH REMOTE LUMINOUS SOURCES COMPRISING A BACKLIGHT MODULE

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