EP2490507B1 - LED control device - Google Patents

LED control device Download PDF

Info

Publication number
EP2490507B1
EP2490507B1 EP11001440.4A EP11001440A EP2490507B1 EP 2490507 B1 EP2490507 B1 EP 2490507B1 EP 11001440 A EP11001440 A EP 11001440A EP 2490507 B1 EP2490507 B1 EP 2490507B1
Authority
EP
European Patent Office
Prior art keywords
leds
channel
channels
led
control device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11001440.4A
Other languages
German (de)
French (fr)
Other versions
EP2490507A1 (en
Inventor
Jochen Suck
Hussein Baydoun
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delphi International Operations Luxembourg SARL
Original Assignee
Delphi Technologies Inc
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 Delphi Technologies Inc filed Critical Delphi Technologies Inc
Priority to EP11001440.4A priority Critical patent/EP2490507B1/en
Publication of EP2490507A1 publication Critical patent/EP2490507A1/en
Application granted granted Critical
Publication of EP2490507B1 publication Critical patent/EP2490507B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]

Definitions

  • the invention relates to an LED control unit, in particular for headlights, via which a plurality of LEDs, that is light emitting diodes, can be controlled channel by channel, wherein in each case a predeterminable maximum number of LEDs in series is switchable. It further relates to an LED lighting system, in particular for headlights, with a plurality of LEDs and such an LED control unit.
  • the light-emitting diodes or LEDs are driven channel by channel, wherein the channels may each comprise a plurality of LEDs connected in series.
  • the channels may each comprise a plurality of LEDs connected in series.
  • LED controllers that can also individually control the LEDs to optimize the illumination and placement of the LEDs in the headlamp. It would be conceivable to switch the LEDs again in series by channel. If the LEDs should also be individually controllable, this could result in the fact that no longer all the associated LEDs are switched on or needed in each channel at the same time. Nevertheless, a respective active channel would always have to provide the energy for all LEDs associated with it, as it has been common practice to short the unneeded LEDs.
  • a common power-free, ie, hard, short circuit with a resistance of substantially 0 ohms would involve the risk of current spikes and damage to the other LEDs. It would be conceivable, instead of a hard short circuit, to provide a soft short circuit with a resistance value> 0 ohm, in which the same electrical power is converted as in a controlled LED. But if several LEDs are deactivated in a respective channel, then the Effectiveness of the entire LED lighting and in particular the relevant control electronics, since for each deactivated LED still required for a driven LED power must be provided in the channel, so no energy is saved. For a particular channel would thus regardless of whether the maximum number of LEDs or only a part of it is required, always the same energy incurred.
  • WO 2008/060469 A2 is an LED control device, in particular for headlamps described, via which a plurality of LEDs channel by channel can be controlled. In each case, a predefinable maximum number of LEDs can be connected in series in the various channels.
  • a comparable LED control unit is in the US 2010/264834 A1 described.
  • the invention has for its object to provide an improved LED control device and an improved LED lighting system of the type mentioned that not only allow variable illumination or variably positionable activation of LEDs, but also ensure the highest possible efficiency.
  • this object is achieved in that it is designed so that the LEDs are at least partially individually controllable and switching elements each variable from channel to channel so switchable that the respective controlled LEDs to a minimum number of channels be bundled and thus in each case the maximum number of series-switchable LEDs is controlled in as many channels.
  • the LEDs can now be efficiently interconnected from channel to channel so that the channels can each be operated with their maximum number of LEDs.
  • additional switching elements are provided, via which the LEDs can be switched to the individual channels or the LEDs are bundled to the most effective number of channels.
  • the same maximum number of LEDs can be connected in series in the different channels.
  • the LED control unit is designed so that no longer required channels can be switched off due to non-controllable LEDs and / or switching to be controlled LEDs on other channels.
  • an LED controller has two channels each with a maximum of eight LEDs, and a first channel is operated with four active LEDs and four inactive LEDs, while the second channel is operated with three active and five inactive LEDs, with the usual short circuits in the first channel contains four short-circuited LEDs and in the second channel even five short-circuited LEDs.
  • both channels would have to be operated with a total of only seven LEDs switched on, while the remaining LEDs would be shorted via resistors.
  • the seven switched-on or activated LEDs which would have to be interconnected to two channels, can now be switched over to the first channel, while the second channel, which is no longer needed, can be switched off.
  • the LED control device can in particular be designed such that a respective respective ranking is assigned to a respective one of the switching elements variably from channel to channel switchable LED in the different channels. This results in a channel bundling of LEDs with fixed channel ranking, in which a respective controlled LED regardless of which channel it is assigned to each, always occupying the same ranking. For example, an LED that occupies position 1 in a respective channel can only be switched back to position 1 of a respective other channel.
  • the LED control unit can also be designed such that a respective LED can be variably switched over from channel to channel via the variable-ranking switching elements within the various channels.
  • a switching of the LEDs from channel to channel is possible, in which the LEDs can additionally also change their position in the respective channel.
  • an LED occupying position 1 in a first channel may be moved to any position of a particular channel another channel can be switched.
  • This also applies to any other LED of a particular channel up to the last of the maximum number of LEDs provided in the channel in question.
  • an LED occupying the position 4 of a first channel can be switched over to any position of a further channel.
  • this fourth position of the first channel engaging LED is switchable to any position of the second channel.
  • said LED can be switched to any position of any other channel.
  • the LED control unit can be designed, for example, so that the LEDs can be controlled via only two channels.
  • the LED control device can in particular also be designed such that the LEDs can be controlled via more than two channels.
  • the LED lighting system according to the invention is characterized in that it comprises a multiplicity of LEDs as well as an LED control device according to the invention.
  • the sole figure of the drawing shows the switching principle of an exemplary embodiment of the LED control device according to the invention with a channel bundling of LEDs with a fixed channel order.
  • the LED controller 10 which may be provided in particular for headlights, a plurality of LEDs 12 channel-controlled.
  • a predeterminable maximum number n of LEDs 12 in series switchable in each case a predeterminable maximum number n of LEDs 12 in series switchable.
  • the LED controller 10 is designed so that the LEDs 12 are also individually controllable and switching elements 14 each variable from channel to channel so switchable that the respective controlled LEDs are bundled to a minimum number of channels and thus in as many channels each the maximum number n of series-connected LEDs 12 is controlled.
  • n of LEDs 12 can be connected in series in the different channels A, B,...
  • the LED controller 10 can now be designed in particular so that no longer required channels can be switched off due to non-actuated LEDs 12 and / or a switch to be controlled LEDs on other channels.
  • the LED controller 10 is designed so that a respective switchable over the switching elements 14 from channel to channel LED 12 in the different channels A, B, ... is assigned in each case the same ranking.
  • the LED control unit 10 is designed, for example, so that the LEDs 12 are only two channels A, B can be controlled. In principle, however, the LEDs 12 can also be controlled via more than two channels.
  • the switching principle of an exemplary embodiment of an LED controller 10 is shown with such channel bundling with a fixed ranking and, for example, an interconnection of LEDs 12 between two channels A, B, wherein the LEDs 12 do not change their position in the channels can.
  • the first LED 12 in the channel A can only be switched to the first LED position in the channel B.
  • the remaining LEDs 12 of a respective channel up to the last LED of the maximum number n of LEDs in the channel can only be switched to the fourth position of the second channel B.
  • a corresponding expansion or expansion can take place, so that For example, the provided on the fourth position of the first channel A LED 12 can be switched to the fourth position of any other channel.
  • the various channels A, B may each comprise a DC / DC converter.
  • B switching elements 16 may be provided.

Description

Die Erfindung betrifft ein LED-Steuergerät, insbesondere für Frontscheinwerfer, über das eine Vielzahl von LEDs, das heißt Leuchtdioden, kanalweise ansteuerbar ist, wobei in verschiedenen Kanälen jeweils eine vorgebbare maximale Anzahl von LEDs in Reihe schaltbar ist. Sie betrifft ferner ein LED-Lichtsystem, insbesondere für Frontscheinwerfer, mit einer Vielzahl von LEDs und einem solchen LED-Steuergerät.The invention relates to an LED control unit, in particular for headlights, via which a plurality of LEDs, that is light emitting diodes, can be controlled channel by channel, wherein in each case a predeterminable maximum number of LEDs in series is switchable. It further relates to an LED lighting system, in particular for headlights, with a plurality of LEDs and such an LED control unit.

Bei den derzeit üblichen LED-Steuergeräten werden die Leuchtdioden bzw. LEDs kanalweise angesteuert, wobei die Kanäle jeweils mehrere in Reihe geschaltete LEDs umfassen können. Es besteht ein Bedarf an LED-Steuergeräten, über die die LEDs auch einzeln angesteuert werden können, um die Ausleuchtung und die Anordnung der LEDs im Scheinwerfer zu optimieren. Dabei wäre denkbar, die LEDs wieder kanalweise in Reihe zu schalten. Sollen die LEDs auch einzeln ansteuerbar sein, so könnte dies zur Folge haben, dass nicht mehr in jedem Kanal gleichzeitig sämtliche diesem zugeordneten LEDs eingeschaltet bzw. benötigt werden. Dennoch müsste ein jeweiliger aktiver Kanal stets die Energie für sämtliche diesem zugeordnete LEDs bereitstellen, da es bisher allgemein üblich ist, die nicht benötigten LEDs kurzzuschließen. Ein üblicher leistungsfreier, das heißt harter Kurzschluss mit einem Widerstandswert von im Wesentlichen 0 Ohm würde jedoch die Gefahr von Stromspitzen und einer Beschädigung der anderen LEDs mit sich bringen. Es wäre nun zwar denkbar, anstelle eines harten Kurzschlusses einen weichen Kurzschluss mit einem Widerstandswert > 0 Ohm vorzusehen, in dem die gleiche elektrische Leistung wie in einer angesteuerten LED umgesetzt wird. Sind nun aber in einem jeweiligen Kanal mehrere LEDs deaktiviert, so nimmt die Effektivität der gesamten LED-Beleuchtung und insbesondere der betreffenden Ansteuerelektronik ab, da für jede deaktivierte LED nach wie vor die für eine angesteuerte LED erforderliche Leistung im Kanal erbracht werden muss, also keine Energie eingespart wird. Für einen jeweiligen Kanal würde also unabhängig davon, ob die maximale Anzahl von LEDs oder nur ein Teil davon benötigt wird, stets die gleiche Energie anfallen.In the currently customary LED control devices, the light-emitting diodes or LEDs are driven channel by channel, wherein the channels may each comprise a plurality of LEDs connected in series. There is a need for LED controllers that can also individually control the LEDs to optimize the illumination and placement of the LEDs in the headlamp. It would be conceivable to switch the LEDs again in series by channel. If the LEDs should also be individually controllable, this could result in the fact that no longer all the associated LEDs are switched on or needed in each channel at the same time. Nevertheless, a respective active channel would always have to provide the energy for all LEDs associated with it, as it has been common practice to short the unneeded LEDs. However, a common power-free, ie, hard, short circuit with a resistance of substantially 0 ohms would involve the risk of current spikes and damage to the other LEDs. It would be conceivable, instead of a hard short circuit, to provide a soft short circuit with a resistance value> 0 ohm, in which the same electrical power is converted as in a controlled LED. But if several LEDs are deactivated in a respective channel, then the Effectiveness of the entire LED lighting and in particular the relevant control electronics, since for each deactivated LED still required for a driven LED power must be provided in the channel, so no energy is saved. For a particular channel would thus regardless of whether the maximum number of LEDs or only a part of it is required, always the same energy incurred.

In der WO 2008/060469 A2 ist ein LED-Steuergerät, insbesondere für Frontscheinwerfer, beschrieben, über das eine Vielzahl von LEDs kanalweise ansteuerbar ist. Dabei ist in den verschiedenen Kanälen jeweils eine vorgebbare maximale Anzahl von LEDs in Reihe schaltbar.In the WO 2008/060469 A2 is an LED control device, in particular for headlamps described, via which a plurality of LEDs channel by channel can be controlled. In each case, a predefinable maximum number of LEDs can be connected in series in the various channels.

Ein vergleichbares LED-Steuergerät ist in der US 2010/264834 A1 beschrieben.A comparable LED control unit is in the US 2010/264834 A1 described.

Der Erfindung liegt die Aufgabe zugrunde, ein verbessertes LED-Steuergerät sowie ein verbessertes LED-Lichtsystem der eingangs genannten Art zu schaffen, die nicht nur eine variable Ausleuchtung bzw. variabel positionierbare Aktivierung von LEDs gestatten, sondern gleichzeitig auch einen möglichst hohen Wirkungsgrad gewährleisten.The invention has for its object to provide an improved LED control device and an improved LED lighting system of the type mentioned that not only allow variable illumination or variably positionable activation of LEDs, but also ensure the highest possible efficiency.

Bezüglich des LED-Steuergeräts wird diese Aufgabe erfindungsgemäß dadurch gelöst, dass es so ausgeführt ist, dass die LEDs zumindest teilweise auch einzeln ansteuerbar und über Schaltelemente jeweils variabel von Kanal zu Kanal so umschaltbar sind, dass die jeweils angesteuerten LEDs auf eine minimale Anzahl von Kanälen gebündelt werden und damit in möglichst vielen Kanälen jeweils die maximale Anzahl von in Reihe schaltbaren LEDs angesteuert wird.With regard to the LED controller, this object is achieved in that it is designed so that the LEDs are at least partially individually controllable and switching elements each variable from channel to channel so switchable that the respective controlled LEDs to a minimum number of channels be bundled and thus in each case the maximum number of series-switchable LEDs is controlled in as many channels.

Aufgrund dieser Ausbildung ist nicht nur eine variable Ausleuchtung bzw. variabel positionierbare Aktivierung der LEDs möglich, es ist gleichzeitig auch ein relativ hoher Wirkungsgrad des gesamten LED-Steuergeräts bzw. des gesamten LED-Lichtsystems sichergestellt.Due to this design not only a variable illumination or variably positionable activation of the LEDs is possible, it is also ensured a relatively high efficiency of the entire LED controller or the entire LED lighting system.

Die LEDs können nunmehr effizient von Kanal zu Kanal so verschaltet werden, dass die Kanäle jeweils mit deren maximalen Anzahl von LEDs betrieben werden können. Dazu sind zusätzliche Schaltelemente vorgesehen, über die die LEDs auf die einzelnen Kanäle umschaltbar sind bzw. die LEDs auf die effektivste Kanalanzahl gebündelt werden. Durch diese Kanalbündelung der LEDs wird der Wirkungsgrad des gesamten LED-Steuergeräts, das mehrere Kanäle umfassen kann, um ein Vielfaches gesteigert, da nicht benötigte Kanäle, die andernfalls nur wenige LEDs versorgen müssten, infolge einer solchen Kanalbündelung einfach abgeschaltet werden können.The LEDs can now be efficiently interconnected from channel to channel so that the channels can each be operated with their maximum number of LEDs. For this purpose, additional switching elements are provided, via which the LEDs can be switched to the individual channels or the LEDs are bundled to the most effective number of channels. Through this channel bundling of the LEDs, the efficiency of the entire LED controller, which may include multiple channels, increased many times, since unnecessary channels that would otherwise have to supply only a few LEDs can be easily switched off as a result of such channel bundling.

Bevorzugt ist in den verschiedenen Kanälen jeweils dieselbe maximale Anzahl von LEDs in Reihe schaltbar.In each case, the same maximum number of LEDs can be connected in series in the different channels.

Von Vorteil ist insbesondere, wenn das LED-Steuergerät so ausgeführt ist, dass aufgrund nicht anzusteuernder LEDs und/oder einer Umschaltung anzusteuernder LEDs auf andere Kanäle nicht mehr benötigte Kanäle abschaltbar sind.It is particularly advantageous if the LED control unit is designed so that no longer required channels can be switched off due to non-controllable LEDs and / or switching to be controlled LEDs on other channels.

Besitzt ein LED-Steuergerät beispielsweise zwei Kanäle mit jeweils maximal acht LEDs und wird ein erster Kanal mit vier aktiven LEDs und vier inaktiven LEDs betrieben, während der zweite Kanal mit drei aktiven und fünf inaktiven LEDs betrieben wird, so wären mit den bisher üblichen Kurzschlüssen im ersten Kanal vier kurzgeschlossene LEDs und im zweiten Kanal sogar fünf kurzgeschlossene LEDs enthalten. Entsprechend der bisher üblichen Steuergerätephilosophie müssten nun beide Kanäle mit insgesamt nur sieben eingeschalteten LEDs betrieben werden, während die restlichen LEDs über Widerstände kurzzuschließen wären. Aufgrund der erfindungsgemäßen Ausbildung können nun beim genannten Ausführungsbeispiel die sieben eingeschalteten bzw. angesteuerten LEDs, die bisher auf zwei Kanäle verschaltet sein müssten, auf den ersten Kanal umgeschaltet werden, während der nicht mehr benötigte zweite Kanal abgeschaltet werden kann.For example, if an LED controller has two channels each with a maximum of eight LEDs, and a first channel is operated with four active LEDs and four inactive LEDs, while the second channel is operated with three active and five inactive LEDs, with the usual short circuits in the first channel contains four short-circuited LEDs and in the second channel even five short-circuited LEDs. According to the Previously common control unit philosophy now both channels would have to be operated with a total of only seven LEDs switched on, while the remaining LEDs would be shorted via resistors. As a result of the design according to the invention, the seven switched-on or activated LEDs, which would have to be interconnected to two channels, can now be switched over to the first channel, while the second channel, which is no longer needed, can be switched off.

Gemäß einer vorteilhaften Ausführungsvariante kann das LED-Steuergerät insbesondere so ausgeführt sein, dass einer jeweiligen über die Schaltelemente variabel von Kanal zu Kanal umschaltbaren LED in den verschiedenen Kanälen jeweils eine gleiche Rangordnung zugeordnet ist. Es ergibt sich somit eine Kanalbündelung von LEDs mit fester Kanalrangordnung, bei der eine jeweilige angesteuerte LED unabhängig davon, welchem Kanal sie jeweils zugeordnet wird, stets dieselbe Rangordnung einnimmt. So kann beispielsweise eine LED, die in einem jeweiligen Kanal die Position 1 einnimmt, jeweils nur wieder auf die Position 1 eines jeweiligen anderen Kanals umgeschaltet werden.According to an advantageous embodiment variant, the LED control device can in particular be designed such that a respective respective ranking is assigned to a respective one of the switching elements variably from channel to channel switchable LED in the different channels. This results in a channel bundling of LEDs with fixed channel ranking, in which a respective controlled LED regardless of which channel it is assigned to each, always occupying the same ranking. For example, an LED that occupies position 1 in a respective channel can only be switched back to position 1 of a respective other channel.

Gemäß einer alternativen Variante kann das LED-Steuergerät jedoch auch so ausgeführt sein, dass eine jeweilige LED über die Schaltelemente mit variabler Rangordnung innerhalb der verschiedenen Kanäle variabel von Kanal zu Kanal umschaltbar ist.According to an alternative variant, however, the LED control unit can also be designed such that a respective LED can be variably switched over from channel to channel via the variable-ranking switching elements within the various channels.

Bei der sich hierbei ergebenden Kanalbündelung von LEDs mit variabler Kanalrangordnung ist ein Umschalten der LEDs von Kanal zu Kanal möglich, bei dem die LEDs zusätzlich auch noch ihre Position im jeweiligen Kanal ändern können. So kann beispielsweise eine die Position 1 in einem ersten Kanal einnehmende LED auf jede beliebige Position eines jeweiligen weiteren Kanals umgeschaltet werden. Dies gilt auch für jede beliebige andere LED eines jeweiligen Kanals bis zur letzten der im betreffenden Kanal vorgesehenen maximalen Anzahl von LEDs. So kann beispielsweise eine die Position 4 eines ersten Kanals einnehmende LED auf eine beliebige Position eines weiteren Kanals umgeschaltet werden. Beispielsweise bei einem Zweikanalsystem ist diese die vierte Position des ersten Kanals einnehmende LED auf eine beliebige Position des zweiten Kanals umschaltbar. Bei einem Mehrkanalsystem kann die genannte LED auf eine beliebige Position eines beliebigen weiteren Kanals umgeschaltet werden.In the resulting channel bundling of LEDs with variable channel ranking, a switching of the LEDs from channel to channel is possible, in which the LEDs can additionally also change their position in the respective channel. For example, an LED occupying position 1 in a first channel may be moved to any position of a particular channel another channel can be switched. This also applies to any other LED of a particular channel up to the last of the maximum number of LEDs provided in the channel in question. Thus, for example, an LED occupying the position 4 of a first channel can be switched over to any position of a further channel. For example, in a two-channel system, this fourth position of the first channel engaging LED is switchable to any position of the second channel. In a multi-channel system, said LED can be switched to any position of any other channel.

Das LED-Steuergerät kann beispielsweise so ausgeführt sein, dass die LEDs über nur zwei Kanäle ansteuerbar sind. Das LED-Steuergerät kann jedoch insbesondere auch so ausgeführt sein, dass die LEDs über mehr als zwei Kanäle ansteuerbar sind.The LED control unit can be designed, for example, so that the LEDs can be controlled via only two channels. However, the LED control device can in particular also be designed such that the LEDs can be controlled via more than two channels.

Das erfindungsgemäße LED-Lichtsystem zeichnet sich dadurch aus, dass es eine Vielzahl von LEDs sowie ein erfindungsgemäßes LED-Steuergerät umfasst.The LED lighting system according to the invention is characterized in that it comprises a multiplicity of LEDs as well as an LED control device according to the invention.

Die einzige Figur der Zeichnung zeigt das Schaltprinzip einer beispielhaften Ausführungsform des erfindungsgemäßen LED-Steuergeräts mit einer Kanalbündelung von LEDs mit fester Kanalrangordnung.The sole figure of the drawing shows the switching principle of an exemplary embodiment of the LED control device according to the invention with a channel bundling of LEDs with a fixed channel order.

Über das LED-Steuergerät 10, das insbesondere für Frontscheinwerfer vorgesehen sein kann, ist eine Vielzahl von LEDs 12 kanalweise ansteuerbar. Dabei ist in den verschiedenen Kanälen A, B, ... jeweils eine vorgebbare maximale Anzahl n von LEDs 12 in Reihe schaltbar.About the LED controller 10, which may be provided in particular for headlights, a plurality of LEDs 12 channel-controlled. In this case, in the various channels A, B, ... in each case a predeterminable maximum number n of LEDs 12 in series switchable.

Das LED-Steuergerät 10 ist so ausgeführt, dass die LEDs 12 auch einzeln ansteuerbar und über Schaltelemente 14 jeweils variabel von Kanal zu Kanal so umschaltbar sind, dass die jeweils angesteuerten LEDs auf eine minimale Anzahl von Kanälen gebündelt werden und damit in möglichst vielen Kanälen jeweils die maximale Anzahl n von in Reihe schaltbaren LEDs 12 angesteuert wird.The LED controller 10 is designed so that the LEDs 12 are also individually controllable and switching elements 14 each variable from channel to channel so switchable that the respective controlled LEDs are bundled to a minimum number of channels and thus in as many channels each the maximum number n of series-connected LEDs 12 is controlled.

In den verschiedenen Kanälen A, B, ... kann jeweils dieselbe maximale Anzahl n von LEDs 12 in Reihe schaltbar sein.In each case the same maximum number n of LEDs 12 can be connected in series in the different channels A, B,...

Das LED-Steuergerät 10 kann nun insbesondere so ausgeführt sein, dass aufgrund nicht anzusteuernder LEDs 12 und/oder einer Umschaltung anzusteuernder LEDs auf andere Kanäle nicht mehr benötigte Kanäle abschaltbar sind.The LED controller 10 can now be designed in particular so that no longer required channels can be switched off due to non-actuated LEDs 12 and / or a switch to be controlled LEDs on other channels.

Beim vorliegenden Ausführungsbeispiel ist das LED-Steuergerät 10 so ausgeführt, dass einer jeweiligen über die Schaltelemente 14 variabel von Kanal zu Kanal umschaltbaren LED 12 in den verschiedenen Kanälen A, B, ... jeweils dieselbe Rangordnung zugeordnet ist.In the present embodiment, the LED controller 10 is designed so that a respective switchable over the switching elements 14 from channel to channel LED 12 in the different channels A, B, ... is assigned in each case the same ranking.

Das LED-Steuergerät 10 ist beispielsweise so ausgeführt, dass die LEDs 12 nur über zwei Kanäle A, B ansteuerbar sind. Grundsätzlich können die LEDs 12 jedoch auch über mehr als zwei Kanäle ansteuerbar sein.The LED control unit 10 is designed, for example, so that the LEDs 12 are only two channels A, B can be controlled. In principle, however, the LEDs 12 can also be controlled via more than two channels.

Im vorliegenden Fall ergibt sich eine Kanalbündelung von LEDs 12 mit fester Kanalrangordnung.In the present case results in a channel bundling of LEDs 12 with fixed channel ranking.

In der einzigen Figur der Zeichnung ist das Schaltprinzip einer beispielhaften Ausführungsform eines LED-Steuergeräts 10 mit einer solchen Kanalbündelung mit fester Rangordnung und beispielsweise einer Verschaltung von LEDs 12 zwischen zwei Kanälen A, B wiedergegeben, wobei die LEDs 12 ihre Position in den Kanälen nicht verändern können. Es kann also beispielsweise die erste LED 12 im Kanal A nur in die erste LED-Position im Kanal B umgeschaltet werden. Dies gilt auch für die restlichen LEDs 12 eines jeweiligen Kanals bis zur letzten LED der maximalen Anzahl n von LEDs im Kanal. So kann beim vorliegenden Zweikanalsystem beispielsweise die auf der vierten Position des ersten Kanals A vorgesehene LED 12 nur auf die vierte Position des zweiten Kanals B umgeschaltet werden. Bei einem Mehrkanalsystem mit mehr als zwei Kanälen kann eine entsprechende Aufweitung bzw. Ausdehnung erfolgen, sodass beispielsweise die auf der vierten Position des ersten Kanals A vorgesehene LED 12 auf die vierte Position eines beliebigen anderen Kanals umgeschaltet werden kann.In the sole figure of the drawing, the switching principle of an exemplary embodiment of an LED controller 10 is shown with such channel bundling with a fixed ranking and, for example, an interconnection of LEDs 12 between two channels A, B, wherein the LEDs 12 do not change their position in the channels can. Thus, for example, the first LED 12 in the channel A can only be switched to the first LED position in the channel B. This also applies to the remaining LEDs 12 of a respective channel up to the last LED of the maximum number n of LEDs in the channel. Thus, in the present two-channel system, for example, the LED 12 provided on the fourth position of the first channel A can only be switched to the fourth position of the second channel B. In a multi-channel system with more than two channels, a corresponding expansion or expansion can take place, so that For example, the provided on the fourth position of the first channel A LED 12 can be switched to the fourth position of any other channel.

Die verschiedenen Kanäle A, B können jeweils einen DC/DC-Wandler umfassen.The various channels A, B may each comprise a DC / DC converter.

Zur Zu- bzw. Abschaltung eines jeweiligen Kanals A, B können Schaltelemente 16 vorgesehen sein.For switching on or off of a respective channel A, B switching elements 16 may be provided.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
LED-SteuergerätLED control unit
1212
LED, LeuchtdiodeLED, LED
1414
Schaltelementswitching element
1616
Schaltelementswitching element

Claims (8)

  1. LED control device (10), in particular for headlights, for controlling a plurality of LEDs (12) in channels, wherein a predetermined maximum number (n) of LEDs (12) is respectively switchable in series in different channels (A, B), characterized in that
    the LED control device (10) is adapted such that the LEDs (12) at least partially can be also controlled individually and can be variably switched from channel to channel by switching elements (14) such that the respective controlled LEDs (12) are combined to a minimum number of channels and therefore the maximum number (n) of LEDs (12) switchable in series is controlled in as many channels as possible, respectively.
  2. LED control device according to claim 1,
    characterized in that
    the same maximum number (n) of LEDs (12) is switchable in series in the different channels (A, B) respectively.
  3. LED control device according to claim 1 or 2,
    characterized in that
    it is adapted such that channels can be switched off that are no longer needed due to LEDs (12) not to be controlled and/or switching of LEDs (12) to be controlled to other channels.
  4. LED control device according to any of the preceding claims,
    characterized in that
    it is adapted such that a respective LED (12), which can be variably switched from channel to channel via the switching elements (14), is allocated the same ranking in the different channels (A, B).
  5. LED control device according to one of the claims 1 to 3,
    characterized in that
    it is adapted such that a respective LED (12) can be variably switched from channel to channel via the switching elements (14) with variable ranking within the different channels (A, B).
  6. LED control device according to any of the preceding claims,
    characterized in that
    it is adapted such that the LEDs (12) are controllable via at least two channels (A, B).
  7. LED control device according to any of the preceding claims,
    characterized in that
    it is adapted such that the LEDs (12) are controllable via more than two channels.
  8. LED lighting system, in particular for headlights, having a plurality of LEDs (12) and a LED control device (10) according to one of the preceding claims.
EP11001440.4A 2011-02-21 2011-02-21 LED control device Active EP2490507B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11001440.4A EP2490507B1 (en) 2011-02-21 2011-02-21 LED control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11001440.4A EP2490507B1 (en) 2011-02-21 2011-02-21 LED control device

Publications (2)

Publication Number Publication Date
EP2490507A1 EP2490507A1 (en) 2012-08-22
EP2490507B1 true EP2490507B1 (en) 2013-06-19

Family

ID=44310127

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11001440.4A Active EP2490507B1 (en) 2011-02-21 2011-02-21 LED control device

Country Status (1)

Country Link
EP (1) EP2490507B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT516294B8 (en) * 2014-09-22 2017-02-15 Zkw Group Gmbh Method and circuit arrangement for feeding a series circuit of n LED units
DE102016101307B4 (en) * 2016-01-26 2019-03-14 Insta Gmbh Lighting module system and lamp constructed therefrom
DE102016217056A1 (en) 2016-09-08 2018-03-08 Osram Gmbh Voltage-dependent operation of individual light sources

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7781979B2 (en) * 2006-11-10 2010-08-24 Philips Solid-State Lighting Solutions, Inc. Methods and apparatus for controlling series-connected LEDs
ATE515924T1 (en) * 2007-12-07 2011-07-15 Koninkl Philips Electronics Nv LED LAMP COLOR CONTROL SYSTEM AND METHOD

Also Published As

Publication number Publication date
EP2490507A1 (en) 2012-08-22

Similar Documents

Publication Publication Date Title
WO2014095463A1 (en) Led module with led chip groups
EP2490507B1 (en) LED control device
EP3210443B1 (en) Printed circuit board having a plurality of electronic components arranged on the printed circuit board in at least one group
WO2014056977A1 (en) Printed circuit board for populating with illumination bodies, comprising a variable working window
WO2012113641A2 (en) Tap changer
EP2897444B1 (en) Circuit for LED current supply
EP3554196B1 (en) Temperature-monitored led module
EP2965358B1 (en) Led module and lighting assembly having a corresponding module
EP2959492B1 (en) Method for operating an on-load tap changer having semiconductor switching elements
EP2894393B1 (en) LED board
DE102013208392A1 (en) LED module and luminaire with one LED module
DE202015005937U1 (en) lamp
DE102008060720B3 (en) Circuit arrangement for controlling magnet valves in electronic control unit in commercial vehicle, has high-potential side switching device deactivating inlet and outlet valves to switch-off recovery diode from electric circuit
EP3170368B1 (en) Circuit arrangement and method for addressing leds in a matrix configuration
EP2986899B1 (en) Led module and assembly for emitting light
EP3799530B1 (en) Lighting device for an elevator shaft with emergency lighting function
EP3199863B1 (en) Illumination module system and light made up of same
WO2017178293A1 (en) Modular system for illumination devices for motor vehicles
DE102013020668B4 (en) Lighting strip for an aircraft interior and aircraft interior fittings with a plurality of lighting strips
EP3731039A2 (en) Electric/electronic installation system
EP2582211B1 (en) Dali distribution device
EP2217039B1 (en) Method for pulse-width modulated control of multiple electrical consumers
DE102014019707A1 (en) Energy supply unit for supplying a lighting unit with electrical energy
EP3525552A1 (en) Circuit arrangement for switching on and off at least two light strands for a vehicle headlight electrically connected in parallel
DE202014101257U1 (en) Lighting system

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20110929

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 618249

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130715

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502011000901

Country of ref document: DE

Effective date: 20130814

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130930

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130919

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130920

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130919

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20130619

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

Owner name: DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.A, LU

Effective date: 20131218

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131019

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130911

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131021

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502011000901

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.A R.L

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502011000901

Country of ref document: DE

Owner name: DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.A, LU

Free format text: FORMER OWNER: DELPHI TECHNOLOGIES, INC., TROY, US

Effective date: 20140410

Ref country code: DE

Ref legal event code: R081

Ref document number: 502011000901

Country of ref document: DE

Owner name: DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.A, LU

Free format text: FORMER OWNER: DELPHI TECHNOLOGIES, INC., TROY, MICH., US

Effective date: 20140410

26N No opposition filed

Effective date: 20140320

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502011000901

Country of ref document: DE

Effective date: 20140320

BERE Be: lapsed

Owner name: DELPHI TECHNOLOGIES, INC.

Effective date: 20140228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140221

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140228

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140228

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140228

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140221

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20110221

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 618249

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160221

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130619

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502011000901

Country of ref document: DE

Owner name: APTIV TECHNOLOGIES LIMITED, BB

Free format text: FORMER OWNER: DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.A R.L., 4940 HAUTCHARAGE, LU

Ref country code: DE

Ref legal event code: R081

Ref document number: 502011000901

Country of ref document: DE

Owner name: APTIV TECHNOLOGIES LIMITED, BB

Free format text: FORMER OWNER: DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.A R.L., 4940 BASCHARAGE, LU

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20190117 AND 20190123

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20190124 AND 20190130

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 502011000901

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: H05B0033080000

Ipc: H05B0045000000

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230223

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230130

Year of fee payment: 13

Ref country code: GB

Payment date: 20230216

Year of fee payment: 13

Ref country code: DE

Payment date: 20230222

Year of fee payment: 13

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230425