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Signal light esp. multi-compartment signal lights for motor vehicle - uses green, red, and blue LED's combined so that single light is given with help of mix optics

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Publication number
DE3916875A1
DE3916875A1 DE19893916875 DE3916875A DE3916875A1 DE 3916875 A1 DE3916875 A1 DE 3916875A1 DE 19893916875 DE19893916875 DE 19893916875 DE 3916875 A DE3916875 A DE 3916875A DE 3916875 A1 DE3916875 A1 DE 3916875A1
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DE
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Prior art keywords
light
signal
colours
blue
red
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DE19893916875
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German (de)
Inventor
Werner Stoeckel-Menzel
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ULO-WERK MORITZ ULLMANN GmbH and CO KG 7340 GEISLINGEN DE
ULLMANN ULO WERK
Original Assignee
ULO-WERK MORITZ ULLMANN GMBH & CO KG, 7340 GEISLINGEN, DE
ULLMANN ULO WERK
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00Arrangements or adaptations of optical signalling or lighting devices
    • B60Q1/26Arrangements or adaptations of optical signalling or lighting devices the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/2696Mounting of devices using LEDs
    • F21S43/14
    • F21S43/255
    • F21S43/26
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2400/00Special features or arrangements of exterior signal lamps for vehicles
    • B60Q2400/20Multi-color single source or LED matrix, e.g. yellow blinker and red brake lamp generated by single lamp

Abstract

The LEDs or LED chips are provided as light source for producing at least two different coloured light and/or signal functions, which are acted on selectively separately or together with a voltage. The three LEDs (6, 7, 8) in the colours red, blue and green or yellow are combined to a common light source (3, 3'), arranged with the closest possible spacing and are designed, so that the light of the complementary colours radiated from the light diodes (6, 7, 8) of the colours: red and green or red and yellow with simultaneous common loading, corresponds to the blue or the blue-green of the third LED (7). Each of the combined light sources (3, 3') are assigned optical elements (4, 5), which mix the different colours radiated from the LEDs (6, 7, 8) to give a unified appearing signal colour or white. USE/ADVANTAGE - Signal lights esp. multi-compartment signal lights for motor vehicles. Known type developed so that light with usual signal colours including white can be given in motor vehicle mfg.

Description

Die Erfindung betrifft eine Signalleuchte, insbesondere eine Mehrkammersignalleuchte für Kraftfahrzeuge, bei der Leuchtdioden oder Leuchtdiodenchips als Lichtquelle zur Er zeugung von mindestens zwei verschiedenfarbigen Leucht- und/oder Signalfunktionen vorgesehen sind, die wahlweise getrennt oder gemeinsam mit Spannung beaufschlagbar sind. The invention relates to a signal lamp, in particular a multi-chamber signal lamp for motor vehicles, in the light-emitting diodes or LED chips as the light source for the He generation of at least two differently colored lighting and / or signaling functions are provided, which are acted upon either separately or together with voltage.

Eine solche Signalleuchte ist aus der DE-PS 33 15 785 C2 bekannt. Such a signal lamp is known from DE-PS 33 15 785 C2. Bei dieser Signalleuchte werden Dreiphasen- Leuchtdioden verwendet, die im unerregten Zustand ein weißes oder transparentes Aussehen haben, bei einer Spannungsbeaufschlagung entweder Rot und Gelb bzw. Rot und Grün aufleuchten, je nach dem, welche Anodenzuleitung mit Spannung beaufschlagt worden ist. In this three-phase signal light emitting diodes are used, which have a white or transparent appearance in the unexcited state, light up when a voltage is applied to either red and yellow or red and green, depending on which anode lead has been applied voltage. Bei der bekannten Bauart können auch Mischfarben erzeugt werden, wenn beide Anoden gleichzeitig mit Spannung versorgt werden, so daß beispielsweise aus Rot und Grün die Mischfarbe Gelb entsteht. In the known construction also mixed colors can be generated when both anodes are simultaneously supplied with voltage, so that for example, red and green mixed color yellow is formed.

Solche Dreiphasen-Leuchtdioden bzw. Leuchtdiodenchips sind für die Verwendung in Kraftfahrzeugsignalleuchten noch relativ aufwendig. Such three-phase light-emitting diodes or LED chips are still relatively expensive for use in motor vehicle signaling lamps. Es besteht auch keine Möglichkeit, ein weißes Licht zu erzeugen, wie dies beispielsweise für den Rückfahrschein werfer notwendig ist. There is also no way to produce a white light, as is necessary, for example, pitcher for the return ticket. Für diesen muß daher eine konventionelle Leuchte zusätzlich oder im Rahmen einer Mehrkammerleuchte eine entsprechend ausgebildete Kammer vorgesehen sein. Therefore, for this, a conventional lamp has a correspondingly formed chamber may be in addition to or as part of a multi-compartment lamp is provided.

Der Erfindung liegt die Aufgabe zugrunde, eine Signalleuchte der eingangs genannten Art so auszubilden, daß Licht mit im Kraftfahrzeugbau üblichen Signalfarben einschließlich Weiß abgegeben werden kann. The object of the invention is based is to design a signal lamp of the kind mentioned so that light can be emitted with customary in motor vehicle signaling colors including white.

Zur Lösung dieser Aufgabe werden bei einer Signalleuchte der eingangs genannten Art jeweils mindestens drei zu einer gemein samen Lichtquelle zusammengefaßte Leuchtdioden der Farben Rot, Blau, Grün oder Gelb vorgesehen, die in möglichst kleinem Abstand zueinander angeordnet und so ausgelegt sind, daß das von den Leuchtdioden der Farben Rot und Grün oder Rot und Gelb, bei gleichzeitiger Beaufschlagung gemeinsam abgestrahlte Licht der Komplementärfarbe zu dem Blau oder Blaugrün der dritten Leuchtdiode entspricht und daß jeder dieser zusammengesetzten Lichtquellen optische Elemente zugeordnet sind, die die von den Leuchtdioden abgestrahlten verschiedenen Farben zu einer einheitlich erscheinenden Signalfarbe oder zu Weiß mischen. at least three combined to form of a common light source light-emitting diodes of the colors are provided red, blue, green or yellow to achieve this object at a signal lamp of the type mentioned, which are arranged in the smallest possible distance from one another and adapted to that of the light emitting diodes the colors red and green or red and yellow, corresponds at the same time applying jointly radiated light of the complementary color to the blue or blue-green of the third light emitting diode and that each of these composite light sources are associated with optical elements to a uniform appearing the light emitted by the light emitting diodes of different colors mix signal color or white. Durch diese Ausgestaltung wird es in einfacher Weise möglich, Kraftfahrzeugsignalleuchten ausschließlich aus Leuchtdioden aufzubauen, wobei auch die Funktion eines Rückfahrscheinwerfers mit von den Leuchtdioden übernommen werden kann. This configuration makes it possible in a simple way to build automotive signal lights exclusively of light-emitting diodes, which also has the function of reversing lamp can be taken with the LEDs.

Es ist zweckmäßig, wenn das von den Leuchtdioden der Farben Rot, Grün und Blau abgegebene Licht annähernd den Primärvalenzen Rot, Grün und Blau entspricht, so daß eine additive Farbmischung nahezu alle im sichtbaren Spektrum vorkommenden, jedoch mindestens die bei Kraftfahrzeugleuchten üblichen Farben einschließlich Weiß, zu realisieren erlaubt. It is expedient if the red, green and blue emitted from the light emitting diodes of the colors of light approximately to the primaries of red, green and blue corresponding to so that an additive color mixing nearly all occurring in the visible spectrum, but at least the usual motor vehicle lighting colors including white, realizing allowed.

Vorteilhafte Weiterbildungen der Erfindung sind in den Unteran sprüchen gekennzeichnet; Advantageous developments of the invention are characterized in the claims Unteran; dabei bieten die Merkmale des An spruches 2 den Vorteil, daß durch Mischung dieser Farben in sehr einfacher Weise weißes Licht erreicht werden kann. while the features of the award on 2 offer the advantage that white light can be achieved by mixing these colors in a very simple manner. Die Merkmale der Ansprüche 1 bis 5 weisen den Vorteil auf, daß eine sehr einfache Realisierungsmöglichkeit besteht, bei der im Handel erhältliche Leuchtdioden verwendet und erfindungsgemäß eingesetzt werden können. The features of claims 1 to 5 have the advantage that a very simple implementation possibility is used in the commercially available light emitting diodes and can be used according to the invention.

Die Erfindung ist anhand von Ausführungsbeispielen in den Zeichnungen dargestellt und wird im folgenden erläutert. The invention is illustrated with reference to embodiments in the drawings and will be explained in the following. Es zeigen: Show it:

Fig. 1 eine schematische Ansicht des Inneren einer Kraftfahrzeugsignalleuchte, die erfindungsgemäß mit Leuchtdioden bestückt ist, Fig. 1 is a schematic view of the interior of a motor vehicle signal lamp, which is equipped with LEDs according to the invention,

Fig. 2 die Teildarstellung eines Schnittes längs der Linie II-II durch Fig. 1 bei vervollständigter Signaleuchte, Fig. 2 shows the partial view of a section along the line II-II through Fig. 1 with the signals of completed lamp,

Fig. 3 einen Ausschnitt der in der Signalleuchte nach Fig. 1 und 2 vorgesehenen Leuchtdiodenanordnung, Fig. 3 shows a detail of the provided in the signal light according to Fig. 1 and 2, light emitting diode array,

Fig. 4 die vergrößerte Darstellung des Teilschnittes durch zwei der Leuchtdioden der Signalleuchte der Fig. 1 und 2 in einem Schnitt längs der Linie IV-IV durch Fig. 3, Fig. 4 shows the enlarged view of the partial section through two of the LEDs of the signal lamp of Fig. 1 and 2 in a section along the line IV-IV through Fig. 3,

Fig. 5 eine Darstellung des Farbdreieckes mit eingetragenen Primärvalenzen und den tatsächlichen Farborten von auf dem Markt befindlichen LED′s, Fig. 5 is a representation of the color triangle with registered primaries and the actual color varieties of on the market LED's,

Fig. 6 eine andere Ausführungsform einer Signalleuchte nach der Erfindung, bei der jedoch eine Mehrkammer anordnung vorgesehen ist und Figure 6 shows another embodiment of a signal light according to the invention, but in which a multi-chamber arrangement is provided, and.

Fig. 7 einen Teilschnitt durch ein Ausführungsbeispiel, bei welchem den einzelnen LED′s Reflektoren zugeordnet sind. A partial section are assigned by an embodiment, in which the individual LED's reflectors Fig. 7.

In den Fig. 1 bis 4 ist eine Einkammersignalleuchte gezeigt, die aus einem nach vorne offenen Gehäuse ( 1 ) mit einer einge setzten Platine ( 2 ) und darauf angeordneten Lichtquellen ( 3 ), sowie aus einer vor die Lichtquellen ( 3 ) gesetzten optischen Anordnung ( 4 ) und einer das Gehäuse ( 1 ) nach vorne abschließen den Lichtscheibe ( 5 ) besteht. In Figs. 1 to 4, a Einkammersignalleuchte is shown with a turned translated from an open-fronted housing (1) board (2) and arranged thereon light sources (3) and made up of a front of the light sources (3) optical assembly (4) and a housing (1) forward to complete the light disc (5). Wie die Fig. 1 und insbesondere 2 zeigen, bestehen die Lichtquellen ( 3 ) jeweils aus einer Gruppe von drei Leuchtdioden ( 6 , 7 , 8 ) die eng zusammenliegend so angeordnet sind, daß sie jeweils an den Ecken eines gleichsei tigen Dreiecks liegen. As shown in FIGS. 1 and show in particular 2, the light sources (3) each consist of a group of three light-emitting diodes (6, 7, 8) which are arranged closely lying so that they are located respectively at the corners of a gleichsei term triangle. Die drei Leuchtdioden ( 6 , 7 , 8 ) bilden daher in dieser Anordnung die Lichtquellen ( 3 ) bzw. ( 3 ′), die auf einer Platine ( 2 ) im Inneren des Gehäuses ( 1 ) jeweils so nebeneinander angeordnet sind, daß sich die dreieckförmigen Lichtquellen ( 3 ) bzw. ( 3 ′) eng nebeneinander und untereinander in einer Art Wabenmuster befinden, wobei es nicht darauf ankommt, ob die Reihenfolge der in den Lichtquellen ( 3 ) bzw. ( 3 ′) angeordneten Leuchtdioden im Uhrzeiger- oder Gegenuhrzeigersinn gleich ist. Therefore, the three light emitting diodes (6, 7, 8) form in this arrangement, the light sources (3) or (3 ') which are each arranged side by side on a board (2) inside the housing (1) that the triangle-shaped light sources (3) or (3 ') are located closely next to each other and to each other in a kind of honeycomb pattern, whereby it does not matter whether the order of the light sources (3) or (3') arranged light-emitting diodes in the clockwise or counterclockwise is equal to. Maßgebend ist, daß jede der Lichtquellen ( 3 , 3 ′) eine grüne Leuchtdiode ( 6 ), eine blaue Leuchtdiode ( 7 ) und eine rote Leuchtdiode ( 8 ) aufweist, deren Farborte in der Darstellung nach Fig. 5 eingetragen sind. Decisive is, that each of the light sources (3, 3 ') has a green light emitting diode (6), a blue light-emitting diode (7) and a red light emitting diode (8), the color locations are registered in the view according to Fig. 5. Die dort eingetragenen Farborte entsprechen Leuchtdioden, wie sie auf dem Markt sind. Those registered color loci corresponding LEDs as they are on the market. Die Platine ( 2 ), auf der die Lichtquellen ( 3 ) bzw. ( 3 ′) in der eben erwähnten Weise angeordnet sind, ist mit einer Schaltung zur Strombeaufschlagung der Leuchtdioden ( 6 , 7 , 8 ) versehen, welche die Anschlüsse ( 9 ) der Leuchtdioden ( 6 , 8 ) jeweils so verbindet, daß wahlweise die anhand der Fig. noch zu erläuternde Spannungsbeaufschlagung der Leuchtdioden ( 6 , 7 , 8 ) einzeln oder gemeinsam erfolgen kann. The board (2) on which the light sources (3) or (3 ') are arranged in the above-mentioned manner, with a circuit for current to the light-emitting diodes (6, 7, 8) provided that the connections (9) the light-emitting diodes (6, 8) so each case connects that, optionally, the reference to FIG. yet to be explained voltage to the light-emitting diodes (6, 7, 8) individually or together can.

Die Fig. 2 und 4 zeigen, daß beim Ausführungsbeispiel jeweils Leuchtdioden ( 6 , 8 ) bzw. ( 7 ) verwendet worden sind, die mit Kondensorlinsen ( 10 ) ausgerüstet sind, welche jeweils vor den lichtaussendenden Flächen ( 11 ) angeordnet sind und daß in geeigneten Abstand vor diesen Kondensorlinsen jeweils Kegel linsen ( 12 ) vorgesehen sind, die so ausgebildet sind, daß sie jeweils den drei Leuchtdioden ( 6 , 7 ) bzw. ( 8 ) einer Lichtquelle ( 3 ) zugeordnet sind. Figs. 2 and 4 show that in the exemplary embodiment each light emitting diodes (6, 8) and (7) have been used with condensing lenses (10) are provided, which are respectively arranged in front of the light-emitting surfaces (11), and that in suitable distance from these condenser lenses each cone (12) are provided which are designed such that they respectively to the three light-emitting diodes (6, 7) or (8) a light source (3) are assigned. Alle der Kegellinsen ( 12 ) sind beim Ausführungsbeispiel Teil einer gemeinsamen optischen Scheibe, die vor die Platine ( 2 ) und die Leuchtdioden ( 6 , 7 ) bzw. ( 8 ) so gesetzt ist, daß sich die von den einzelnen Leuchtdioden ( 6 , 7 ) bzw. ( 8 ) ausgesandten Lichtstrahlen mischen. All of the conical lens (12) are in the embodiment part of a common optical disc before the board (2) and the light-emitting diodes (6, 7) or (8) is set so that the (from the individual light emitting diodes 6, 7 mix) and (8) emitted light beams. Beim Ausführungs beispiel ist die Lichtscheibe ( 5 ) mit Streulinsen ( 13 ) so versehen, daß die von den Kegellinsen oder Kegelprismen kommen den Lichtstrahlen von einem Betrachter als ein einheitliches Licht wahrgenommen werden, auch wenn nicht alle drei Leuchtdioden, sondern nur eine oder zwei strombeaufschlagt sind und zunächst farbiges Licht abgeben. Upon execution, the light disc (5) with diverging lenses (13) is provided so as to be of the conical lenses or cone prisms come to the light beams by an observer as a uniform light perceived, even if not all of three light emitting diodes, but supplied with current only one or two and are initially give colored light.

Es ist natürlich auch möglich, Leuchtdioden ( 6 ′, 7 ′, 8 ′) ohne Kondensorlinsen vorzusehen, wie dies in Fig. 7 dargestellt ist. It is of course also possible for light emitting diodes (6 ', 7', 8 ') without providing condenser, as shown in Fig. 7. Diese Leuchtdioden ( 6 ′, 7 ′, 8 ′) sind in einer Reflektorplatte ( 30 ) derart angeordnet, daß jeder Leuchtdiode ( 6 ′, 7 ′, 8 ′) ein Reflektor ( 31 ) zugeordnet ist. These light-emitting diodes (6 ', 7', 8 ') are (30) in a reflector plate arranged such that each light emitting diode (6', 7 ', 8'), a reflector (31) is associated. Die auf der Platine ( 2 ′) angeordneten Leuchtdioden ( 6 ′, 7 ′, 8 ′) liegen dabei jeweils in dem Zentrum eines Reflektors ( 31 ). The on-board (2 ') arranged light-emitting diodes (6', 7 ', 8') are in each case in the center of a reflector (31).

Um zu erreichen, daß je nach Strombeaufschlagung von den Lichtquellen ( 3 ) bzw. ( 3 ′) ein Licht in der gewünschten Farbe abgegeben wird, macht sich die Erfindung die additive Mischung des Lichtes dieser Leuchtdioden zunutze. To achieve that, depending on the application of current from the light sources (3) a light is emitted in the desired color or (3 '), the invention makes use of the additive mixture of the light of these light-emitting diodes. Fig. 5 zeigt im soge nannten Farbdreieck den sogenannten Spektralfarbenzug ( 14 ), welcher die Farborte aller Spektralfarben aufgetragen über X als Ordinate und Y als Abszisse umfaßt. Fig. 5 shows the so-called color triangle known as spectral locus (14) comprising the color locations of all spectral plotted as ordinate X and Y as the abscissa. Dieser zusammenhän gende Kurvenzug ( 14 ) ist an den Spektrumsenden offen. This zusammenhän constricting curve (14) is open at the range ends. Man pflegt den Spektralfarbenzug ( 14 ) durch eine gerade Verbin dungslinie der Farborte der Spektrumsenden abzuschließen. It is customary spectral value (14) by a straight line Verbin dung of the color coordinates of the spectrum ends complete. Diese Gerade ( 15 ) wird als Purpurgerade bezeichnet, weil sie die Mischfarben aus den beiden Spektrumsenden, nämlich Rot und Blauviolett, enthält. This line (15) is called the purple line, because it contains the mixed colors of the two ends of spectrum, namely red and blue-violet. Die durch den Kurvenzug ( 14 ) und die Purpurgerade ( 15 ) begrenzte Fläche enthält die Farborte aller erzeugbaren Farbvalenzen. Passing through the curve (14) and the magenta line (15) limited area containing the color locations of all producible color valences.

In die Darstellung nach Fig. 5 eingetragen sind nun die Primärvalenzen der Farben Grün, Rot und Blau, wobei die Primärvalenz Rot die Wellenlänge λ =700 nm, die Primärvalenz Grün 546,1 nm und die Primärvalenz Blau 435,8 nm aufweist. Registered in the illustration of FIG. 5, the primaries of the colors green, red and blue, the primary valence Red = 700 nm, the green primary valence 546.1 nm, and the blue primary valence having 435.8 nm, the wavelength λ are now. Es ist bekannt, daß man durch additive Mischung dieser Primärvalenzen alle vorkommenden Farben darstellen kann. It is known that one can represent all the colors occurring by additive mixture of these primaries.

Eingetragen in Fig. 5 sind aber auch die Farborte der im Handel erhältlichen Leuchtdioden, die für Rot eine Wellenlänge g p eak = 635 nm bis 660 nm, für Grün 565 nm und für Blau 480 nm aufweisen. Recorded in Fig. 5 but also the color coordinates of the light emitting diodes commercially available, the g p eak = comprise for red, a wavelength of 635 nm to 660 nm for green and 565 nm for blue 480 nm. Erhältlich sind auch, worauf später noch eingegangen wird, gelbe Leuchtdioden mit λ p eak=583 bis 590 nm. In Fig. 5 sind die Primärvalenzen Blau mit ( 16 ), Grün mit ( 17 ) und Rot mit ( 18 ) eingezeichnet, während die Farborte der erhältlichen Leuchtdioden ( 6 , 7 , 8 ) Blau mit ( 19 ), Grün mit ( 20 ), Rot mit ( 21 ) und Gelb mit ( 22 ) bezeichnet sind. Available are, whereupon be discussed later, yellow LEDs with λ p eak = drawn 583-590 nm. In Fig. 5, the primaries are blue with (16), green by (17) and red with (18), while the color locations of the light emitting diodes available (6, 7, 8) blue with (19), green by (20), red are denoted by (21) and yellow with (22). Es wird ohne weiteres erkennbar, daß man durch Vermischung des abgegebenen farbigen Lichtes der grünen LED ( 6 ) mit dem Farbort ( 20 ) und der roten LED ( 8 ) mit dem Farbort ( 21 ) den in der Mitte zwischen den beiden Punkten ( 20 , 21 ) auf dem Kurvenzug ( 14 ) liegenden Farbort der Farbe gelb erreichen kann, so daß bei Beaufschlagung nur der roten LED ( 8 ) mit dem Farbort ( 21 ) die in den Fig. 1 bis 4 gezeigten Lichtquellen ( 3 , 3 ′) rotes, bei Beaufschlagung der roten LED ( 8 ) mit dem Farbort ( 21 ) und der grünen LED ( 6 ) mit dem Farbort ( 20 ) dagegen gelbes Licht erzeugen. It is readily apparent that by mixing the emitted colored light, the green LED (6) with the color location (20) and the red LED (8) with the color location (21) to (in the middle between the two points 20, can achieve 21) (on the curve lying 14) color location of the color yellow, so that when acted on only the red LED (8) with the color location (21) red light sources (3, 3 ') shown in Figs. 1 to 4 on the other hand generate yellow, when exposed to the red LED (8) with the color location (21) and the green LED (6) with the color location (20) light. Es wird aus Fig. 5 auch erkennbar, daß das durch Mischung des Lichtes der LED′s ( 6 , 8 ) mit den Farborten ( 20 , 21 ) erreichte gelbe Licht ( 22 ) in etwa der Komplementärfarbe zu der blauen LED ( 7 ) mit dem Farbort ( 19 ) in Fig. 5 entspricht, so daß bei Beaufschlagung aller drei Leuchtdioden ( 6 , 7 , 8 Fig. 1 und 3) ein weißes Licht erzeugt werden kann, welches für das für Kraftfahrzeugleuchten erforderliche Weiß ausreichend ist. It is shown in Fig. 5 may also be seen that the through mixing of the light of the LED's (6, 8) with the color locations (20, 21) reached yellow light (22) approximately to the complementary color to the blue LED (7) with a white light can be produced the color coordinates (19) corresponds in Fig. 5, so that upon the application of all the three light-emitting diodes (6, 7, 8, Fig. 1 and 3), which for motor vehicle lights required White is sufficient for this.

Wie ohne weiteres klar wird, wäre es vorteilhaft LED′s zu verwenden, die sich den Primärvalenzen so weit wie möglich annähern. As is readily apparent, it would be advantageous to use LEDs that approximate the primaries as much as possible. Der Vergleich der Wellenlängen aus Fig. 5 zeigt aber, daß die Kraftfahrzeugsignalfarben Rot (Schlußlicht, Bremslicht, Nebelschlußlicht), Gelb (Fahrtrichtungsanzeiger, Seitenmarkierungslicht) und Weiß (Rückfahrlicht, Positions licht) mit Sicherheit erzeugt werden können, auch wenn zwischen den tatsächlichen Farben der erhältlichen Leuchtdioden und den Primärvalenzen erhebliche Unterschiede bestehen. The comparison of the wavelengths of FIG. 5 shows, however, that the motor vehicle signal of red (light reversing light, POS) (tail light, the brake light, rear fog light), yellow (direction indicators, side marker light) and white can be generated with certainty, even if between the actual colors of available LEDs and the primaries are significant differences.

Es wird mit der Erfindung daher möglich, eine im ausgeschalteten Zustand völlig farblos wirkende, also neutrale und folglich zur jeder Farbzeugfarbe passende Leuchte herzustellen, die außer der Farbneutralität noch den Vorteil einer extrem flachen Bauweise gegenüber herkömmlichen Glühlampen-Leuchten aufweist, wobei Sie unter Beibehalten der flachen Form auch einer gekrümmten Kontur einer Fahrzeugkarosserie angepaßt werden und dieser folgen kann. It is possible with the invention, therefore, to establish a completely colorless acting in the off state, that is neutral, and thus to each color lighter color matching light having other than the color neutrality the advantage of an extremely flat construction as compared with conventional incandescent lamps, wherein you the while maintaining flat shape also be adapted to a curved contour of a vehicle body and this can follow. Trotzdem wird es durch entsprechende Beschaltung und Strombeaufschlagung der Lichtquellen ( 3 , 3 ′) möglich, alle Kraftfahrzeugsignalfarben einschließlich Weiß zu realisieren. Nevertheless, it is possible by appropriate wiring and current to the light sources (3, 3 ') to realize all vehicle-signal colors including white. Die Leuchte der Fig. 1 bis 4 kann daher durch entsprechende Beschaltung und Strombeaufschlagung alle im Kraftfahrzeugbau notwendigen Signalfunktionen übernehmen. The luminaire of Figs. 1 to 4 can therefore assume with corresponding connection and application of current signal all necessary functions in motor vehicle construction. Entscheidend ist, daß die einzeln abgestrahlten Farben von einer Mischoptik so zusammengefaßt werden, daß vom Auge nur die Mischfarbe wahrge nommen werden kann, dh daß keine Auflösung in Einzelfarben mehr möglich ist. It is crucial that the individual radiated colors are combined by a mixing optics so that can be taken from the eye wahrge only the mixed color, ie that no resolution in single colors is possible.

Es ist, wie vorher schon angedeutet auch möglich, die Lichtquellen ( 3 , 3 ′) nicht nur aus Leuchtdioden ( 6 , 7 , 8 ) der drei Farben Gelb, Rot, Grün, sondern auch vier Leuchtdioden in den Farben Gelb, Rot, Grün und Blau vorzusehen, die jeweils zu viert zu einer Lichtquelle zusammengefaßt und mit einer Mischoptik gekoppelt werden. It is, as previously already indicated also possible that the light sources (3, 3 ') not only from light emitting diodes (6, 7, 8) of the three colors of yellow, red, green, but also four light-emitting diodes in the colors yellow, red, green and to provide blue, which are respectively combined into four of a light source and coupled to a mixing optics. Auch dann ist es bei geeigneter Schaltung und Strombeaufschlagung möglich, die geschilderten Farbkombinationen zu erreichen. Even then it is possible with a suitable circuit and current feed to achieve the described color combinations. Natürlich ist es auch möglich, falls der Be darf dazu besteht, durch Beaufschlagung nur der blauen Leuchtdioden das für Polizeifahrzeuge vorbehaltene Blaulicht zu erzeugen. Of course it is also possible, if the loading must is to generate by applying only the blue light-emitting diodes, the reserved for police cars flashing lights.

Fig. 6 zeigt eine Möglichkeit der Ausbildung einer Kraftfahrzeugsignalleuchte, die in verschiedene Felder in an sich bekannter Weise für verschiedene Signalfunktionen unterteilt ist. Fig. 6 shows one way of forming a motor vehicle signal lamp, which is divided into various fields in known manner for different signal functions. In diesem Fall sind in dem Feld ( 24 ), das dem Fahrtrichtungsanzeiger entspricht, nur gelbe Leuchtdioden, in dem Feld ( 25 ), das dem Schluß- oder Bremslicht entspricht nur rote Leuchtdioden, im Bereich ( 26 ) des Rückfahrscheinwerfers die Lichtquellen ( 3 bzw. 3 ′) in der vorher erwähnten Zusammenstellung und in dem Feld ( 27 ) nur rote Leuchtdioden zum Betrieb eines Nebelschlußlichtes angeordnet. In this case, only yellow LEDs in the array (25) corresponding to the closing or brake light corresponds to only red light-emitting diodes, in the region (26) of the reversing light, the light sources (3 are in the field (24) corresponding to the direction indicator, or . 3 ') in the aforementioned compilation and in the field (27) disposed only red light-emitting diodes for operating a rear fog light. Zusätzlich ist hier noch ein Rückstrahler ( 28 ) vorgesehen. In addition, a rear reflector (28) is also provided here. Es ist auch möglich, so wie dies in Fig. 1 angedeutet ist, das ganze Feld einer Signalleuchte mit den Mehrelement-Lichtquellen ( 3 , 3 ′) zu bestücken. It is also possible, so as indicated in Fig. 1, to assemble the entire field of signal light with the multi-element light sources (3, 3 '). Es ist dann möglich, das gesamte Feld jeweils nur für eine Funktion zu benutzen, zB als Rückfahrscheinwerfer. It is then possible to use the whole field only for a function, such as reversing light. Um trotz dieser Ausbildung die gesetzlichen Bestimmungen bezüglich überlagerter Wirkungen einhalten zu können, wird dann vorgesehen, daß die Lichtquellen ( 3 , 3 ′) über einen Prozessor angesteuert werden. In order to meet the legal regulations regarding superimposed effects in spite of this training, is then provided that the light sources (3, 3 ') are controlled by a processor. Dieser Prozessor, der an Geber und Sensoren angeschlossen ist, steuert dann die Lichtquellen ( 3 , 3 ′) derart an, daß Überlagerungen vermieden werden, zB das Gesamtfeld in einzelne Felder aufgelöst wird, wenn beispielsweise zusätzlich ein Bremssignal und/oder ein Fahrtrichtungsanzeigesignal benötigt werden. This processor is connected to transmitter and sensors, then controls the light sources (3, 3 ') in such a way that overlapping is avoided, for example, the total field is split into individual fields, for example, if in addition a brake signal and / or a turn signal needed ,

Claims (9)

1. Signalleuchte (insbesondere Mehrkammersignalleuchte für Kraftfahrzeuge), bei der Leuchtdioden oder Leuchtdiodenchips als Lichtquelle zur Erzeugung von mindestens zwei verschieden farbigen Leucht- und/oder Signalfunktionen vorgesehen sind, die wahlweise getrennt oder gemeinsam mit Spannung beaufschlagbar sind, dadurch gekennzeichnet, daß mindestens drei zu einer gemeinsamen Lichtquelle ( 3 , 3 ′) zusammengefaßte Leuchtdioden ( 6 , 7 , 8 ) in den Farben Rot, Blau und Grün oder Gelb vorgesehen sind, die in möglichst kleinem Abstand zueinander angeordnet und so ausgelegt sind, daß das von den Leuchtdioden ( 6 , 7 , 8 ) der Farben Rot und Grün oder Rot und Gelb bei gleichzeitiger Beaufschlagung gemeinsam abgestrahlte Licht der Komplementärfarbe zu dem Blau oder Blaugrün der dritten Leuchtdiode ( 7 ) entspricht und daß jeder der zusammengesetzen Lichtquelle ( 3 , 3 ′) optische Elemente ( 4 , 5 ) zugeordnet sind, die die von den Leuchtdioden ( 6 , 7 , 8 ) abgestrahlten versch 1. Signal light (in particular multi-chamber signal lamp for motor vehicles), in which light emitting diodes or light emitting diode chip as a light source for generating at least two differently colored lighting and / or signaling functions are provided, which are acted upon either separately or together with voltage, characterized in that at least three to a common light source (3, 3 ') summarized light emitting diodes (6, 7, 8) are provided in the colors red, blue and green or yellow, which are arranged in the smallest possible distance from one another and designed so that the (from the LEDs 6 , 7, 8) of the colors red and green or red and yellow corresponds at the same time applying jointly radiated light of the complementary color to the blue or blue-green of the third light-emitting diode (7) and that each of the composite laws light source (3, 3 ') comprises optical elements (4 , 5) are associated with the (of the light emitting diodes 6, 7, 8 emitted) various iedenen Farben zu einer einheitlich erscheinende Signalfarbe oder zu Weiß mischen. mix iedenen colors to a uniform signal appearing color or white.
2. Signalleuchte nach Anspruch 1, dadurch gekennzeich net, daß die Wellenlängen der Leuchtdioden ( 6 , 7 , 8 ) annähernd den Primärvalenzen der Farben Rot, Grün und Blau entsprechen. 2. Signal light according to claim 1, characterized in that the wavelengths of the light-emitting diodes (6, 7, 8) correspond approximately to red, green, and blue primaries of the colors.
3. Signalleuchte nach Anspruch 1, dadurch gekennzeichnet, daß die drei Leuchtdioden ( 6 , 7 , 8 ) jeweils an den Ecken eines gleichschenkligen Dreiecks angeordnet sind, welches die Lichtquellen ( 3 , 3 ′) bildet. 3. Signal light according to claim 1, characterized in that the three light-emitting diodes (6, 7, 8) at the corners of an isosceles triangle are arranged, which forms the light sources (3, 3 ').
4. Signalleuchte nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß jeder Leuchtdiode ( 6 ′, 7 ′, 8 ′) einer Lichtquelle ( 3 , 3 ′) ein Reflektor ( 3 ′) zugeordnet ist. 4. Signal light according to one of claims 1 to 3, characterized in that each light-emitting diode (6 ', 7', 8 ') a light source (3, 3') is associated with a reflector (3 ').
5. Signalleuchte nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß jede der Leuchtdioden ( 6 , 7 , 8 ) mit einer der Leuchtfläche ( 11 ) vorgeschaltenden Kondensorlinse ( 10 ) versehen ist. 5. Signal light according to one of claims 1 to 3, characterized in that each of the light-emitting diodes (6, 7, 8) with one of the light-emitting surface (11) pre-switching condenser lens (10) is provided.
6. Signalleuchte nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß jeder der aus drei Leuchtdioden ( 6 , 7 , 8, ) bestehenden Lichtquellen ( 3 , 3 ′) eine Mischoptik ( 12 ) und eine Streuscheibe ( 5 ) zugeordnet sind. 6. Signal light according to one of claims 1 to 5, characterized in that each of the three light-emitting diodes (6, 7, 8,) existing light sources (3, 3 ') are assigned to a mixing optics (12) and a diffuser (5).
7. Signalleuchte nach Anspruch 6, dadurch gekennzeich net, daß die Streuscheibe ( 5 ) die Lichtscheibe der Signalleuchte bildet. 7. Signal light according to claim 6, characterized in that the spreading disc (5) forms the light pane of the signal light.
8. Signalleuchte nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Leuchtdioden ( 6 , 7 , 8 ) auf einer Platine ( 2 ) angeordnet sind, die mit einer vorgegebenen Schaltung versehen ist. 8. Signal light according to one of claims 1 to 7, characterized in that the light-emitting diodes (6, 7, 8) on a board (2) are arranged, which is provided with a predetermined circuit.
9. Signalleuchte nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Platine ( 2 , 2 ′) einschließlich des Gehäuses ( 1 ) der Mischoptik ( 12 ) und der Streuscheibe ( 5 ) einer gekrümmten Fahrzeugkontur angepaßt sind. 9. Indicator light according to one of claims 1 to 8, characterized in that the board (2, 2 ') including the housing (1) of the mixing optics (12) and the lens (5) of a curved contour of the vehicle are matched.
DE19893916875 1989-05-24 1989-05-24 Signal light esp. multi-compartment signal lights for motor vehicle - uses green, red, and blue LED's combined so that single light is given with help of mix optics Withdrawn DE3916875A1 (en)

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