EP3378281B1 - Lighting device for a motor vehicle - Google Patents

Lighting device for a motor vehicle Download PDF

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Publication number
EP3378281B1
EP3378281B1 EP16790614.8A EP16790614A EP3378281B1 EP 3378281 B1 EP3378281 B1 EP 3378281B1 EP 16790614 A EP16790614 A EP 16790614A EP 3378281 B1 EP3378281 B1 EP 3378281B1
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EP
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Prior art keywords
led units
led
data bus
illumination device
processing module
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EP16790614.8A
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German (de)
French (fr)
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EP3378281A1 (en
Inventor
Juergen Bruegl
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/18—Controlling the light source by remote control via data-bus transmission
    • 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]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • H05B45/325—Pulse-width modulation [PWM]

Definitions

  • the invention relates to a lighting device for a motor vehicle.
  • LEDs for lighting devices in motor vehicles in various versions.
  • the individual LEDs (monochrome, RGB, RGBW) are usually controlled by LED drivers.
  • a module is used with a microprocessor, on the one hand takes over communication with a motor vehicle data bus and on the other drives the LEDs, usually via PWM outputs.
  • a motor vehicle data bus is often the so-called.
  • LIN bus Local Interconnect Network
  • LED units which have an integrated circuit.
  • the LEDs and the integrated circuit are housed in a common housing, whereby a high packing density can be achieved.
  • the individual LED units are controlled by a data stream.
  • the publication US 2005/063194 A1 discloses an LED-based lighting device for a motor vehicle in which a plurality of LED units, each comprising a processor and a plurality of LEDs, are driven via a data bus.
  • the object of the invention is to provide a lighting device for a motor vehicle, which allows the coupling of a large number of LED units to a motor vehicle data bus.
  • the lighting device is intended for a motor vehicle, in particular for a car and possibly also for a truck, and comprises one or more Processing modules as well as an internal data bus and a plurality of LED units.
  • the internal data bus is an SPI (Serial Protocol Interface) data bus, which is known per se from the prior art.
  • the internal data bus may also be a differential data bus, thereby forming a differential data bus indicates that digital data is encoded by a voltage difference between two lines.
  • APIX is a bi-directional bus with additional sidebands. To control the LEDs you need only a part of it, so a uni-directional bus.
  • the lighting device for a motor vehicle according to the invention is defined in claim 1.
  • a plurality of LED units of the plurality of LED units are assigned to a respective processing module and the respective processing module is coupled to the associated LED units via the internal data bus.
  • the internal data bus is thus provided for communication between the respective processing modules and the associated LED units.
  • the LED units associated with a respective processing module each include one or more LEDs and an integrated circuit.
  • the LED units are connected to a power supply for the LED or LEDs.
  • the respective processing module is adapted to be coupled to a motor vehicle data bus for receiving first digital control commands for operating the lighting device from the motor vehicle data bus and for providing as second digital control commands to the internal data bus. Further, the LED units associated with a respective processing module are configured to supply power to their LEDs from the power supply based on the second digital control commands on the internal data bus via the integrated circuits.
  • a suitable conversion of control commands on a motor vehicle data bus into control commands on an internal data bus in the form of an SPI bus or a differential data bus is achieved.
  • the driving of a large number of LED units can be performed without being limited to a maximum number.
  • the number of LED units is usually limited to 16-24 due to line capacitances.
  • the processing module or modules are for coupling to a motor vehicle data bus set up in the form of the LIN bus already mentioned above.
  • a motor vehicle data bus and a CAN bus can be used.
  • the internal data bus is an SPI bus and the processing module (s) are configured such that the first digital control signals are applied to the SPI bus by means of software SPI and / or hardware SPI.
  • the software SPI method is well known in the art and, by means of a program library, allows to create an executable program on the appropriate processing module that configures each pin of the processing module as an SPI pin for connection to SPI bus lines can.
  • conventional I / O pins are configured as SPI pins.
  • dedicated pins of the processing module are provided for connection to the SPI bus.
  • a respective processing module of at least a portion of the processing modules is coupled to the internal data bus such that one or more, only the one or more, LED units assigned to several different (ie disjunctive) subsets of LED units respective subset associated data lines of the internal data bus are connected to the respective processing module to transmit the second digital control commands over this.
  • the data transmission takes place on the internal data bus via a plurality of different data lines for corresponding subsets of LED units.
  • this embodiment of the invention is combined with the software SPI method described above, in which any pins of the processing module are used to transfer data to the SPI bus.
  • the lighting device comprises only a single processing module for all LED units of the plurality of LED units.
  • one or more of the LED units of the plurality of LED units can have RGB LED units with a red, green and blue LED and / or RGBW LED units with a red, green, blue and be white LED.
  • one or more of the LED units of the plurality of LED units may also be configured as white light LED units with a white LED.
  • one or more of the LED units of the plurality of LED units may also be single color LED units with a single color LED (eg, red, green, or blue).
  • one or more of the LED units of the plurality of LED units are each configured such that the integrated circuit and the one or more LEDs of the respective LED unit are integrated in a common housing.
  • particularly compact LED units are used in the lighting device according to the invention, whereby their size can be reduced.
  • LED units of the type APA10x and / or of the types WS281x, SK691x, PL982x and derivatives of these types are used. These types of LED units are known per se from the prior art and allow their stringing together with a very high packing density.
  • one or more of the LED units of the plurality of LED units are each configured to supply power to the LED or LEDs of the respective LED unit from the power supply via PWM modulation.
  • one or more of the LED units of the plurality of LED units are each configured to supply power to the LED or LEDs of the respective LED unit via the setting of variable current levels.
  • the lighting device according to the invention may be provided for different purposes in the vehicle.
  • the lighting device may be an interior lighting in the interior of the vehicle. Nevertheless, there is also the possibility that the lighting device is an outdoor lighting on the outside of the motor vehicle.
  • the invention relates to a motor vehicle, in particular a car or optionally also a truck, which comprises one or more of the lighting devices according to the invention or preferred variants of these lighting devices.
  • a lighting device which comprises a plurality of LED units arranged on a belt as lighting means.
  • These LED units are in Fig. 1 denoted by the reference numeral 3.
  • the individual LEDs of the LED units are designated by reference numerals 301, 302 and 303.
  • the LED 301 is a red LED
  • the LED 302 is a green LED
  • the LED 303 is a blue LED.
  • Each LED unit 3 includes an integrated circuit, which is designated by reference numeral 4.
  • the LED units 3 are preferably LED units of the type APA10x or of the type WS281x, SK691x, PL982x, which have a very compact design.
  • the LEDs and the integrated circuit are housed in a common housing. With the ribbon-shaped LED units, a very high packing density can be achieved (depending on the housing form from 144 to 367 LEDs / m).
  • the individual LED units 3 are controlled via a digital data stream in the form of a bit stream which is supplied to the individual LED units by means of an internal data bus 2 (ie a data bus provided internally in the lighting device).
  • the internal data bus in the embodiment described here is an SPI bus with a line CL for the clock and a line DL for the bit stream.
  • two power lines L1 and L2 are provided which are connected to a DC power supply 5 are connected. Based on the bit stream received via the data line DL, a PWM modulation of the current supplied to the individual LEDs 301 to 303 takes place, in order thereby to drive the LEDs in accordance with the bit stream on the data line DL.
  • the structure of the LED units 3 off Fig. 1 is known and again in detail in Fig. 2 shown.
  • the functionalities of the data processing described below and the control of the LEDs 301 to 303 are realized via the integrated circuit 4 of the LED unit 3.
  • Fig. 2 One recognizes an input CKI and an output CKO for the clock signal of the clock line CL. Further, a data input terminal SDI and a data output terminal SDO for the bit stream are provided on the data line DL.
  • the received bit stream of the data line DL and the clock signal of the clock line CL reach the serial data input DI. Subsequently, the bit stream is decoded in the decoder DEC.
  • a so-called LED frame is generated in precisely timed sequence for each of the LEDs 301 to 303.
  • the frames of all LEDs of an LED unit 3 are transmitted as a packet on the data bus 2 and decoded in the decoder DEC. After decoding, it is checked whether the current packet for the corresponding LED unit is determined, which can be recognized by a code in the frame. If so, the decoded bitstream is applied to respective shift registers SR1 to SR3, with the shift register SR1 associated with the red LED 301, the shift register SR2 with the green LED 302, and the shift register SR3 associated with the blue LED 303. On the individual shift registers thus the corresponding signal for driving the respective LED is given.
  • the signal is a sequence of high / low signals which is converted in the LED unit 3 into a PWM signal for supplying power to the individual LEDs 301 to 303.
  • the three PWM generators G1, G2 and G3 are provided, analogous to the shift registers, the generator G1 for the red LED 301, the generator G2 for the green LED 302 and the generator G3 for the blue LED 303 is provided.
  • the individual PWM generators are connected to an oscillator OS, which receives an oscillator signal at the oscillator input OSCI.
  • the entrance and the exit are coupled to the line L1.
  • a voltage of 5 V is supplied thereto.
  • the grounding of the LEDs via the terminal VSS which is coupled to the line L2.
  • the SPI data bus known per se is used to provide the bit stream for the individual LEDs Fig. 1 designated by reference numeral 2. It is now essential to the invention that the bitstream is generated on the line DL by means of a processing module 1, which is coupled to a motor vehicle data bus 6, which in the embodiment described here is a LIN bus.
  • the processing module 1 comprises a LIN transceiver 101, which picks up corresponding digital signals for driving the LED units 3 from the LIN bus 6, and a microprocessor 102, which converts the tapped signals into corresponding data signals on the data line DL.
  • the signals transmitted on the LIN bus 6 in this case comprise signals which are intended for the lighting device and define a light pattern to be set for the lighting device.
  • These signals in turn come from a control unit of the motor vehicle, which determines the light pattern to be generated based on an input of the driver, for example, and outputs it as a corresponding signal to the LIN bus.
  • a control unit of the motor vehicle determines the light pattern to be generated based on an input of the driver, for example, and outputs it as a corresponding signal to the LIN bus.
  • About the processing module 1 is detected whether the light pattern is provided according to the current signal on the LIN bus 6 for the lighting device. If this is the case, this signal is converted by means of the microprocessor 102 into a corresponding signal for the SPI data bus 2.
  • the microprocessor 102 generates the signals for the SPI bus 2 by means of software SPI.
  • Software SPI is known per se from the prior art and represents a program library with which any free pins of the microprocessor can be used for signal output to the SPI bus 2. Alternatively, however, hardware SPI can also be used. Special SPI pins are provided for signal output to the SPI bus 2.
  • the use of software SPI has the advantage that in the internal data bus 2 a plurality of lines DL and CL can be provided for driving a larger number of LED units 3.
  • the variant of the invention described above has a number of advantages.
  • a signal on a LIN bus in an SPI signal can be achieved driving a very large number of LED units.
  • any pins in a corresponding processing module can be used to generate signals for the SPI bus.
  • only a single processing module can be used to control all LED units provided in a specific area of the motor vehicle (eg door or seat).
  • the existing LIN architecture can be retained in a motor vehicle.
  • known per se LED units can be used. It is only necessary to implement a suitable conversion of the LIN signals on the LIN bus into signals of an SPI bus.

Landscapes

  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)

Description

Die Erfindung betrifft eine Beleuchtungsvorrichtung für ein Kraftfahrzeug.The invention relates to a lighting device for a motor vehicle.

Aus dem Stand der Technik ist es bekannt, für Beleuchtungsvorrichtungen in Kraftfahrzeugen LEDs in verschiedenen Ausführungen zu verwenden. Die einzelnen LEDs (einfarbig, RGB, RGBW) werden in der Regel mit LED-Treibern angesteuert. Hierzu wird ein Modul mit einem Mikroprozessor verwendet, der zum einen eine Kommunikation mit einem Kraftfahrzeug-Datenbus übernimmt und zum anderen die LEDs treibt, üblicherweise über PWM-Ausgänge. Als Kraftfahrzeug-Datenbus kommt dabei häufig der sog. LIN-Bus (LIN = Local Interconnect Network) zum Einsatz. Bei dieser Art der Ansteuerung besteht das Problem, dass nur eine bestimmte Maximalanzahl von LEDs ansteuert werden kann.From the prior art, it is known to use LEDs for lighting devices in motor vehicles in various versions. The individual LEDs (monochrome, RGB, RGBW) are usually controlled by LED drivers. For this purpose, a module is used with a microprocessor, on the one hand takes over communication with a motor vehicle data bus and on the other drives the LEDs, usually via PWM outputs. As a motor vehicle data bus is often the so-called. LIN bus (LIN = Local Interconnect Network) is used. In this type of control there is the problem that only a certain maximum number of LEDs can be controlled.

Aus dem Stand der Technik sind ferner neuartige LED-Einheiten bekannt, die über eine integrierte Schaltung verfügen. Bei diese LED-Einheiten sind die LEDs und die integrierte Schaltung in einem gemeinsamen Gehäuse untergebracht, wodurch eine hohe Packungsdichte erreicht werden kann. Die einzelnen LED-Einheiten werden über einen Datenstrom gesteuert. Bis dato gibt es keine Ansätze, wie diese LED-Einheiten zur Verwendung als Kraftfahrzeug-Beleuchtungsvorrichtung an einen Kraftfahrzeug-Datenbus gekoppelt werden können.Also known from the prior art are novel LED units which have an integrated circuit. In these LED units, the LEDs and the integrated circuit are housed in a common housing, whereby a high packing density can be achieved. The individual LED units are controlled by a data stream. To date, there are no approaches to how these LED units can be coupled to a motor vehicle data bus for use as a motor vehicle lighting device.

Die Druckschrift US 2005/063194 A1 offenbart eine LED-basierte Beleuchtungsvorrichtung für ein Kraftfahrzeug, in der eine Vielzahl von LED-Einheiten, die jeweils einen Prozessor und mehrere LEDs umfassen, über einen Datenbus angesteuert werden.The publication US 2005/063194 A1 discloses an LED-based lighting device for a motor vehicle in which a plurality of LED units, each comprising a processor and a plurality of LEDs, are driven via a data bus.

Aufgabe der Erfindung ist es, eine Beleuchtungsvorrichtung für ein Kraftfahrzeug zu schaffen, welche die Ankopplung einer großen Anzahl von LED-Einheiten an einen Kraftfahrzeug-Datenbus ermöglicht.The object of the invention is to provide a lighting device for a motor vehicle, which allows the coupling of a large number of LED units to a motor vehicle data bus.

Diese Aufgabe wird durch die Beleuchtungsvorrichtung gemäß Patentanspruch 1 gelöst. Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen definiert.This object is achieved by the lighting device according to claim 1. Further developments of the invention are defined in the dependent claims.

Die erfindungsgemäße Beleuchtungsvorrichtung ist für ein Kraftfahrzeug, insbesondere für einen PKW und ggf. auch für einen LKW, vorgesehen und umfasst ein oder mehrere Verarbeitungsmodule sowie einen internen Datenbus und eine Vielzahl von LED-Einheiten. Der interne Datenbus ist ein SPI-Datenbus (SPI = Serial Protocol Interface), der an sich aus dem Stand der Technik bekannt ist. Alternativ kann der interne Datenbus auch ein differentieller Datenbus sein, wobei sich ein differentieller Datenbus dadurch auszeichnet, dass digitale Daten über eine Spannungsdifferenz zwischen zwei Leitungen codiert werden. In einer bevorzugten Variante wird als differentieller Datenbus der an sich bekannte APIX-Bus (APIX = Automotive Pixel Link) eingesetzt. APIX ist ein bi-direktionaler Bus mit zusätzlichen Seitenbändern. Für die Ansteuerung der LEDs braucht man nur einen Teil davon, also einen uni-direktionalen Bus.The lighting device according to the invention is intended for a motor vehicle, in particular for a car and possibly also for a truck, and comprises one or more Processing modules as well as an internal data bus and a plurality of LED units. The internal data bus is an SPI (Serial Protocol Interface) data bus, which is known per se from the prior art. Alternatively, the internal data bus may also be a differential data bus, thereby forming a differential data bus indicates that digital data is encoded by a voltage difference between two lines. In a preferred variant, the APIX bus known per se (APIX = Automotive Pixel Link) is used as the differential data bus. APIX is a bi-directional bus with additional sidebands. To control the LEDs you need only a part of it, so a uni-directional bus.

Die Beleuchtungsvorrichtung für ein Kraftfahrzeug gemäß der Erfindung wird im Anspruch 1 definiert.The lighting device for a motor vehicle according to the invention is defined in claim 1.

In der erfindungsgemäßen Beleuchtungsvorrichtung sind einem jeweiligen Verarbeitungsmodul mehrere LED-Einheiten aus der Vielzahl von LED-Einheiten zugeordnet und das jeweilige Verarbeitungsmodul ist mit den zugeordneten LED-Einheiten über den internen Datenbus gekoppelt. Der interne Datenbus ist somit zur Kommunikation zwischen den jeweiligen Verarbeitungsmodulen und den zugeordneten LED-Einheiten vorgesehen. Die einem jeweiligen Verarbeitungsmodul zugeordneten LED-Einheiten umfassen jeweils eine oder mehrere LEDs und eine integrierte Schaltung. Die LED-Einheiten sind an eine Spannungsversorgung für das oder die LEDs angeschlossen. Das jeweilige Verarbeitungsmodul ist zur Kopplung an einen Kraftfahrzeug-Datenbus eingerichtet, um erste digitale Steuerbefehle zum Betrieb der Beleuchtungsvorrichtung von dem Kraftfahrzeug-Datenbus zu empfangen und als zweite digitale Steuerbefehle auf den internen Datenbus zu geben. Ferner sind die einem jeweiligen Verarbeitungsmodul zugeordneten LED-Einheiten dazu eingerichtet, ihren LEDs Strom aus der Spannungsversorgung basierend auf den zweiten digitalen Steuerbefehlen auf dem internen Datenbus mittels der integrierten Schaltungen zuzuführen.In the lighting device according to the invention, a plurality of LED units of the plurality of LED units are assigned to a respective processing module and the respective processing module is coupled to the associated LED units via the internal data bus. The internal data bus is thus provided for communication between the respective processing modules and the associated LED units. The LED units associated with a respective processing module each include one or more LEDs and an integrated circuit. The LED units are connected to a power supply for the LED or LEDs. The respective processing module is adapted to be coupled to a motor vehicle data bus for receiving first digital control commands for operating the lighting device from the motor vehicle data bus and for providing as second digital control commands to the internal data bus. Further, the LED units associated with a respective processing module are configured to supply power to their LEDs from the power supply based on the second digital control commands on the internal data bus via the integrated circuits.

Mit der erfindungsgemäßen Beleuchtungsvorrichtung wird eine geeignete Umsetzung von Steuerbefehlen auf einem Kraftfahrzeug-Datenbus in Steuerbefehle auf einem internen Datenbus in der Form eines SPI-Busses bzw. eines differentiellen Datenbusses erreicht. Auf diese Weise kann die Ansteuerung einer großen Anzahl von LED-Einheiten ohne Beschränkung auf eine Maximalanzahl durchgeführt werden. Im Gegensatz hierzu ist bei einer Ansteuerung rein über einen Kraftfahrzeug-Datenbus in der Form eines LIN-Busses die Anzahl der LED-Einheiten auf Grund von Leitungskapazitäten üblicherweise auf 16 - 24 begrenzt.With the lighting device according to the invention, a suitable conversion of control commands on a motor vehicle data bus into control commands on an internal data bus in the form of an SPI bus or a differential data bus is achieved. In this way, the driving of a large number of LED units can be performed without being limited to a maximum number. In contrast, in the case of control purely via a motor vehicle data bus in the form of a LIN bus, the number of LED units is usually limited to 16-24 due to line capacitances.

In einer besonders bevorzugten Ausführungsform der erfindungsgemäßen Beleuchtungsvorrichtung sind das oder die Verarbeitungsmodule zur Kopplung an einen Kraftfahrzeug-Datenbus in der Form des bereits oben erwähnten LIN-Busses eingerichtet. Alternativ oder zusätzlich kann als Kraftfahrzeug-Datenbus auch ein CAN-Bus (CAN = Controller Area Network) verwendet werden.In a particularly preferred embodiment of the lighting device according to the invention, the processing module or modules are for coupling to a motor vehicle data bus set up in the form of the LIN bus already mentioned above. Alternatively or additionally, as a motor vehicle data bus and a CAN bus (CAN = Controller Area Network) can be used.

In einer weiteren Ausgestaltung der erfindungsgemäßen Beleuchtungsvorrichtung ist der interne Datenbus ein SPI-Bus und das oder die Verarbeitungsmodule sind derart ausgestaltet, dass die ersten digitalen Steuersignale mittels Software-SPI und/oder Hardware-SPI auf den SPI-Bus gegeben werden. Die Software-SPI-Methode ist an sich aus dem Stand der Technik bekannt und ermöglicht mittels einer Programmbibliothek ein ausführbares Programm auf dem entsprechenden Verarbeitungsmodul zu erzeugen, mit dem jedes Pin des Verarbeitungsmoduls als SPI-Pin zur Verbindung mit Leitungen des SPI-Busses konfiguriert werden kann. Mit anderen Worten werden bei der Verwendung von Software-SPI herkömmliche I/O-Pins als SPI-Pins konfiguriert. Im Gegensatz dazu sind bei der Verwendung von Hardware-SPI dedizierte Pins des Verarbeitungsmoduls zur Anbindung an den SPI-Bus vorgesehen.In a further embodiment of the lighting device according to the invention, the internal data bus is an SPI bus and the processing module (s) are configured such that the first digital control signals are applied to the SPI bus by means of software SPI and / or hardware SPI. The software SPI method is well known in the art and, by means of a program library, allows to create an executable program on the appropriate processing module that configures each pin of the processing module as an SPI pin for connection to SPI bus lines can. In other words, when using software SPI, conventional I / O pins are configured as SPI pins. In contrast, when using hardware SPI, dedicated pins of the processing module are provided for connection to the SPI bus.

In einer weiteren, besonders bevorzugten Variante der erfindungsgemäßen Beleuchtungsvorrichtung ist ein jeweiliges Verarbeitungsmodul zumindest eines Teils der Verarbeitungsmodule derart mit dem internen Datenbus gekoppelt, dass für mehrere unterschiedliche (d.h. disjunkte) Teilmengen von dem jeweiligen Verarbeitungsmodul zugeordneten LED-Einheiten jeweils eine oder mehrere, nur der jeweiligen Teilmenge zugeordnete Datenleitungen des internen Datenbusses mit dem jeweiligen Verarbeitungsmodul verbunden sind, um hierüber die zweiten digitalen Steuerbefehle zu übertragen. Mit anderen Worten erfolgt die Datenübertragung auf dem internen Datenbus über mehrere unterschiedliche Datenleitungen für entsprechende Teilmengen von LED-Einheiten. Hierdurch kann die Anzahl der ansteuerbaren LED-Einheiten weiter erhöht werden. Vorzugsweise wird diese Ausführungsform der Erfindung mit der oben beschriebenen Software-SPI-Methode kombiniert, bei der beliebige Pins des Verarbeitungsmoduls zur Datenübertragung an den SPI-Bus genutzt werden.In a further, particularly preferred variant of the illumination device according to the invention, a respective processing module of at least a portion of the processing modules is coupled to the internal data bus such that one or more, only the one or more, LED units assigned to several different (ie disjunctive) subsets of LED units respective subset associated data lines of the internal data bus are connected to the respective processing module to transmit the second digital control commands over this. In other words, the data transmission takes place on the internal data bus via a plurality of different data lines for corresponding subsets of LED units. As a result, the number of controllable LED units can be further increased. Preferably, this embodiment of the invention is combined with the software SPI method described above, in which any pins of the processing module are used to transfer data to the SPI bus.

In einer weiteren bevorzugten Ausführungsform umfasst die Beleuchtungsvorrichtung nur ein einzelnes Verarbeitungsmodul für alle LED-Einheiten der Vielzahl der LED-Einheiten. Hierdurch wird ein besonders kompakter Aufbau der Beleuchtungsvorrichtung erreicht. Je nach Ausgestaltung der erfindungsgemäßen Beleuchtungsvorrichtung können eine oder mehrere der LED-Einheiten aus der Vielzahl von LED-Einheiten RGB-LED-Einheiten mit einer roten, grünen und blauen LED und/oder RGBW-LED-Einheiten mit einer roten, grünen, blauen und weißen LED sein. Gegebenenfalls können eine oder mehrere der LED-Einheiten aus der Vielzahl von LED-Einheiten auch als Weißlicht-LED-Einheiten mit einer weißen LED ausgestaltet sein. Ferner können eine oder mehrere der LED-Einheiten aus der Vielzahl von LED-Einheiten auch Einfarb-LED-Einheiten mit einer einfarbigen LED (z.B. rot, grün oder blau) sein.In a further preferred embodiment, the lighting device comprises only a single processing module for all LED units of the plurality of LED units. As a result, a particularly compact construction of the lighting device is achieved. Depending on the embodiment of the lighting device according to the invention, one or more of the LED units of the plurality of LED units can have RGB LED units with a red, green and blue LED and / or RGBW LED units with a red, green, blue and be white LED. Optionally, one or more of the LED units of the plurality of LED units may also be configured as white light LED units with a white LED. Further, one or more of the LED units of the plurality of LED units may also be single color LED units with a single color LED (eg, red, green, or blue).

In einer weiteren Variante der erfindungsgemäßen Beleuchtungsvorrichtung sind eine oder mehrere der LED-Einheiten aus der Vielzahl von LED-Einheiten jeweils derart ausgestaltet, dass die integrierte Schaltung und das oder die LEDs der jeweiligen LED-Einheit in einem gemeinsamen Gehäuse integriert sind. Es werden somit besonders kompakt aufgebaute LED-Einheiten in der erfindungsgemäßen Beleuchtungsvorrichtung verwendet, wodurch deren Größe reduziert werden kann. In einer besonders bevorzugten Variante kommen LED-Einheiten vom Typ APA10x und/oder von den Typen WS281x, SK691x, PL982x sowie Derivate dieser Typen zum Einsatz. Diese Typen von LED-Einheiten sind an sich aus dem Stand der Technik bekannt und ermöglichen deren Aneinanderreihung mit einer sehr hohen Packungsdichte.In a further variant of the lighting device according to the invention, one or more of the LED units of the plurality of LED units are each configured such that the integrated circuit and the one or more LEDs of the respective LED unit are integrated in a common housing. Thus, particularly compact LED units are used in the lighting device according to the invention, whereby their size can be reduced. In a particularly preferred variant, LED units of the type APA10x and / or of the types WS281x, SK691x, PL982x and derivatives of these types are used. These types of LED units are known per se from the prior art and allow their stringing together with a very high packing density.

In einer weiteren Ausführungsform der erfindungsgemäßen Beleuchtungsvorrichtung sind eine oder mehrere der LED-Einheiten aus der Vielzahl von LED-Einheiten jeweils dazu eingerichtet, der oder den LEDs der jeweiligen LED-Einheit Strom aus der Spannungsversorgung über PWM-Modulation zuzuführen. Alternativ oder zusätzlich besteht auch die Möglichkeit, dass eine oder mehrere der LED-Einheiten aus der Vielzahl von LED-Einheiten jeweils dazu eingerichtet sind, der oder den LEDs der jeweiligen LED-Einheit Strom aus der Spannungsversorgung über die Einstellung variabler Strompegel zuzuführen.In a further embodiment of the lighting device according to the invention, one or more of the LED units of the plurality of LED units are each configured to supply power to the LED or LEDs of the respective LED unit from the power supply via PWM modulation. Alternatively or additionally, there is also the possibility that one or more of the LED units of the plurality of LED units are each configured to supply power to the LED or LEDs of the respective LED unit via the setting of variable current levels.

Je nach Ausgestaltung kann die erfindungsgemäße Beleuchtungsvorrichtung für unterschiedliche Zwecke im Fahrzeug vorgesehen sein. Insbesondere kann die Beleuchtungsvorrichtung eine Innenraumbeleuchtung im Inneren des Fahrzeugs sein. Nichtsdestotrotz besteht auch die Möglichkeit, dass die Beleuchtungsvorrichtung eine Außenbeleuchtung an der Außenseite des Kraftfahrzeugs ist.Depending on the configuration, the lighting device according to the invention may be provided for different purposes in the vehicle. In particular, the lighting device may be an interior lighting in the interior of the vehicle. Nevertheless, there is also the possibility that the lighting device is an outdoor lighting on the outside of the motor vehicle.

Neben der soeben beschriebenen Beleuchtungsvorrichtung betrifft die Erfindung ein Kraftfahrzeug, insbesondere einen PKW oder ggf. auch einen LKW, das eine oder mehrere der erfindungsgemäßen Beleuchtungsvorrichtungen bzw. bevorzugter Varianten dieser Beleuchtungsvorrichtungen umfasst.In addition to the lighting device just described, the invention relates to a motor vehicle, in particular a car or optionally also a truck, which comprises one or more of the lighting devices according to the invention or preferred variants of these lighting devices.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der beigefügten Figuren detailliert beschrieben.An embodiment of the invention will be described below in detail with reference to the accompanying drawings.

Es zeigen:

Fig. 1
eine schematische Darstellung einer Ausführungsform einer erfindungsgemäßen Beleuchtungsvorrichtung; und
Fig. 2
eine Detailansicht einer LED-Einheit aus Fig. 1.
Show it:
Fig. 1
a schematic representation of an embodiment of a lighting device according to the invention; and
Fig. 2
a detailed view of a LED unit Fig. 1 ,

Im Folgenden wird eine Ausführungsform der Erfindung anhand einer Beleuchtungsvorrichtung beschrieben, welche als Leuchtmittel eine Vielzahl von auf einem Band angeordneten LED-Einheiten umfasst. Diese LED-Einheiten sind in Fig. 1 mit dem Bezugszeichen 3 bezeichnet. Die einzelnen LEDs der LED-Einheiten sind mit den Bezugszeichen 301, 302 und 303 bezeichnet. Die LED 301 ist eine rote LED, die LED 302 eine grüne LED und die LED 303 eine blaue LED. Jede LED-Einheit 3 enthält eine integrierte Schaltung, welche mit Bezugszeichen 4 bezeichnet ist. Bei den LED-Einheiten 3 handelt es sich vorzugsweise um LED-Einheiten von Typ APA10x bzw. vom Typ WS281x, SK691x, PL982x, welche sehr kompakt aufgebaut sind. Insbesondere sind bei diesen LED-Einheiten die LEDs und die integrierte Schaltung in einem gemeinsamen Gehäuse untergebracht. Mit den bandförmig angeordneten LED-Einheiten kann eine sehr hohe Packungsdichten erreicht werden (je nach Gehäuseform von 144 bis 367 LEDs/m).In the following, an embodiment of the invention will be described with reference to a lighting device which comprises a plurality of LED units arranged on a belt as lighting means. These LED units are in Fig. 1 denoted by the reference numeral 3. The individual LEDs of the LED units are designated by reference numerals 301, 302 and 303. The LED 301 is a red LED, the LED 302 is a green LED, and the LED 303 is a blue LED. Each LED unit 3 includes an integrated circuit, which is designated by reference numeral 4. The LED units 3 are preferably LED units of the type APA10x or of the type WS281x, SK691x, PL982x, which have a very compact design. In particular, in these LED units, the LEDs and the integrated circuit are housed in a common housing. With the ribbon-shaped LED units, a very high packing density can be achieved (depending on the housing form from 144 to 367 LEDs / m).

Die einzelnen LED-Einheiten 3 werden über einen digitalen Datenstrom in der Form eines Bitstroms angesteuert, der mittels eines internen Datenbusses 2 (d.h. eines intern in der Beleuchtungsvorrichtung vorgesehenen Datenbusses) den einzelnen LED-Einheiten zugeführt wird. Der interne Datenbus ist in der hier beschriebenen Ausführungsform ein SPI-Bus mit einer Leitung CL für den Takt und einer Leitung DL für den Bitstrom. Darüber hinaus sind zwei Stromleitungen L1 und L2 vorgesehen, welche an eine Gleichspannungsversorgung 5 angeschlossen sind. Basierend auf dem über die Datenleitung DL empfangenen Bitstrom erfolgt eine PWM-Modulation des den einzelnen LEDs 301 bis 303 zugeführten Stroms, um hierdurch die LEDs entsprechend dem Bitstrom auf der Datenleitung DL anzusteuern.The individual LED units 3 are controlled via a digital data stream in the form of a bit stream which is supplied to the individual LED units by means of an internal data bus 2 (ie a data bus provided internally in the lighting device). The internal data bus in the embodiment described here is an SPI bus with a line CL for the clock and a line DL for the bit stream. In addition, two power lines L1 and L2 are provided which are connected to a DC power supply 5 are connected. Based on the bit stream received via the data line DL, a PWM modulation of the current supplied to the individual LEDs 301 to 303 takes place, in order thereby to drive the LEDs in accordance with the bit stream on the data line DL.

Der Aufbau der LED-Einheiten 3 aus Fig. 1 ist an sich bekannt und nochmals im Detail in Fig. 2 gezeigt. Die nachfolgend beschriebenen Funktionalitäten der Datenverarbeitung und der Ansteuerung der LEDs 301 bis 303 werden über die integrierte Schaltung 4 der LED-Einheit 3 realisiert. In Fig. 2 erkennt man einen Eingang CKI und einen Ausgang CKO für das Taktsignal der Taktleitung CL. Ferner sind ein Dateneingangsanschluss SDI und ein Datenausgangsanschluss SDO für den Bitstrom auf der Datenleitung DL vorgesehen. Der empfangene Bitstrom der Datenleitung DL sowie das Taktsignal der Taktleitung CL gelangen zu dem seriellen Dateneingang DI. Anschließend wird der Bitstrom in dem Decoder DEC decodiert.The structure of the LED units 3 off Fig. 1 is known and again in detail in Fig. 2 shown. The functionalities of the data processing described below and the control of the LEDs 301 to 303 are realized via the integrated circuit 4 of the LED unit 3. In Fig. 2 One recognizes an input CKI and an output CKO for the clock signal of the clock line CL. Further, a data input terminal SDI and a data output terminal SDO for the bit stream are provided on the data line DL. The received bit stream of the data line DL and the clock signal of the clock line CL reach the serial data input DI. Subsequently, the bit stream is decoded in the decoder DEC.

Mit dem weiter unten beschriebenen Verarbeitungsmodul 1 wird in genauer zeitlicher Abfolge für jede der LEDs 301 bis 303 ein sog. LED-Frame erzeugt. Die Frames aller LEDs einer LED-Einheit 3 werden als ein Paket auf dem Datenbus 2 übertragen und im Decoder DEC decodiert. Nach der Decodierung wird überprüft, ob das aktuelle Paket für die entsprechende LED-Einheit bestimmt ist, was anhand eines Codes im Frame erkannt werden kann. Ist dies der Fall, wird der decodierte Bitstrom auf entsprechende Schieberegister SR1 bis SR3 gegeben, wobei das Schieberegister SR1 der roten LED 301, das Schieberegister SR2 der grünen LED 302 und das Schieberegister SR3 der blauen LED 303 zugeordnet ist. Auf die einzelnen Schieberegister wird somit das entsprechende Signal zur Ansteuerung der jeweiligen LED gegeben. Das Signal ist eine Abfolge von High/Low-Signalen, die in der LED-Einheit 3 in ein PWM-Signal zur Zufuhr von Strom an die einzelnen LEDs 301 bis 303 gewandelt wird. Hierfür sind die drei PWM-Generatoren G1, G2 und G3 vorgesehen, wobei analog zu den Schieberegistern der Generator G1 für die rote LED 301, der Generator G2 für die grüne LED 302 und der Generator G3 für die blaue LED 303 vorgesehen ist. Die einzelnen PWM-Generatoren sind mit einem Oszillator OS verbunden, der ein Oszillatorsignal an dem Oszillatoreingang OSCI empfängt.With the processing module 1 described below, a so-called LED frame is generated in precisely timed sequence for each of the LEDs 301 to 303. The frames of all LEDs of an LED unit 3 are transmitted as a packet on the data bus 2 and decoded in the decoder DEC. After decoding, it is checked whether the current packet for the corresponding LED unit is determined, which can be recognized by a code in the frame. If so, the decoded bitstream is applied to respective shift registers SR1 to SR3, with the shift register SR1 associated with the red LED 301, the shift register SR2 with the green LED 302, and the shift register SR3 associated with the blue LED 303. On the individual shift registers thus the corresponding signal for driving the respective LED is given. The signal is a sequence of high / low signals which is converted in the LED unit 3 into a PWM signal for supplying power to the individual LEDs 301 to 303. For this purpose, the three PWM generators G1, G2 and G3 are provided, analogous to the shift registers, the generator G1 for the red LED 301, the generator G2 for the green LED 302 and the generator G3 for the blue LED 303 is provided. The individual PWM generators are connected to an oscillator OS, which receives an oscillator signal at the oscillator input OSCI.

Die Stromzufuhr zu den LEDs 301 bis 303 erfolgt über den Eingang VDD und den Ausgang VREG, zwischen denen sich eine Regel RE befindet. Der Eingang und der Ausgang sind an die Leitung L1 gekoppelt. In der Regel wird hierüber eine Spannung von 5 V zugeführt. Demgegenüber erfolgt die Erdung der LEDs über den Anschluss VSS, der an die Leitung L2 gekoppelt ist.The power supply to the LEDs 301 to 303 via the input VDD and the output VREG, between which there is a rule RE. The entrance and the exit are coupled to the line L1. As a rule, a voltage of 5 V is supplied thereto. In contrast, the grounding of the LEDs via the terminal VSS, which is coupled to the line L2.

Wie bereits erwähnt, wird zur Bereitstellung des Bitstroms für die einzelnen LEDs der an sich bekannte SPI-Datenbus genutzt, der in Fig. 1 mit Bezugszeichen 2 bezeichnet ist. Erfindungswesentlich ist nunmehr, dass der Bitstrom auf der Leitung DL mittels eines Verarbeitungsmoduls 1 erzeugt wird, das an einem Kraftfahrzeug-Datenbus 6 gekoppelt ist, der in der hier beschriebenen Ausführungsform ein LIN-Bus ist. Das Verarbeitungsmodul 1 umfasst einen LIN-Transceiver 101, der entsprechende digitale Signale zur Ansteuerung der LED-Einheiten 3 vom LIN-Bus 6 abgreift, sowie ein Mikroprozessor 102, der die abgegriffenen Signale in entsprechende Datensignale auf der Datenleitung DL wandelt. Die auf dem LIN-Bus 6 übertragenen Signale umfassen dabei Signale, welche für die Beleuchtungsvorrichtung bestimmt sind und ein für die Beleuchtungsvorrichtung einzustellendes Lichtmuster festlegen. Diese Signale stammen wiederum von einem Steuergerät des Kraftfahrzeugs, welches beispielsweise basierend auf einer Eingabe des Fahrers das zu generierende Lichtmuster festlegt und als entsprechendes Signal auf den LIN-Bus gibt. Über das Verarbeitungsmodul 1 wird erkannt, ob das Lichtmuster entsprechend dem aktuellen Signal auf dem LIN-Bus 6 für die Beleuchtungsvorrichtung vorgesehen ist. Ist dies der Fall, wird dieses Signal mittels des Mikroprozessors 102 in ein entsprechendes Signal für den SPI-Datenbus 2 umgesetzt.As already mentioned, the SPI data bus known per se is used to provide the bit stream for the individual LEDs Fig. 1 designated by reference numeral 2. It is now essential to the invention that the bitstream is generated on the line DL by means of a processing module 1, which is coupled to a motor vehicle data bus 6, which in the embodiment described here is a LIN bus. The processing module 1 comprises a LIN transceiver 101, which picks up corresponding digital signals for driving the LED units 3 from the LIN bus 6, and a microprocessor 102, which converts the tapped signals into corresponding data signals on the data line DL. The signals transmitted on the LIN bus 6 in this case comprise signals which are intended for the lighting device and define a light pattern to be set for the lighting device. These signals in turn come from a control unit of the motor vehicle, which determines the light pattern to be generated based on an input of the driver, for example, and outputs it as a corresponding signal to the LIN bus. About the processing module 1 is detected whether the light pattern is provided according to the current signal on the LIN bus 6 for the lighting device. If this is the case, this signal is converted by means of the microprocessor 102 into a corresponding signal for the SPI data bus 2.

In einer besonders bevorzugten Ausführungsform der Erfindung werden von dem Mikroprozessor 102 die Signale für den SPI-Bus 2 mittels Software-SPI erzeugt. Software-SPI ist an sich aus dem Stand der Technik bekannt und stellt eine Programmbibliothek dar, mit der beliebige freie Pins des Mikroprozessors zur Signalabgabe auf den SPI-Bus 2 genutzt werden können. Alternativ kann jedoch auch Hardware-SPI eingesetzt werden, Dabei sind spezielle SPI-Pins zur Signalabgabe auf den SPI-Bus 2 vorgesehen. Die Verwendung von Software-SPI hat den Vorteil, dass in dem internen Datenbus 2 mehrere Leitungen DL und CL zur Ansteuerung einer größeren Anzahl von LED-Einheiten 3 vorgesehen sein können.In a particularly preferred embodiment of the invention, the microprocessor 102 generates the signals for the SPI bus 2 by means of software SPI. Software SPI is known per se from the prior art and represents a program library with which any free pins of the microprocessor can be used for signal output to the SPI bus 2. Alternatively, however, hardware SPI can also be used. Special SPI pins are provided for signal output to the SPI bus 2. The use of software SPI has the advantage that in the internal data bus 2 a plurality of lines DL and CL can be provided for driving a larger number of LED units 3.

Die im Vorangegangenen beschriebene Variante der Erfindung weist eine Reihe von Vorteilen auf. Insbesondere kann durch die Umsetzung eines Signals auf einem LIN-Bus in ein SPI-Signal die Ansteuerung einer sehr großen Anzahl von LED-Einheiten erreicht werden. Darüber hinaus können durch die Verwendung der Software-SPI-Methode beliebige Pins in einem entsprechenden Verarbeitungsmodul zur Erzeugung von Signalen für den SPI-Bus genutzt werden. Im Besonderen kann ggf. nur ein einzelnes Verarbeitungsmodul zur Ansteuerung aller, in einem bestimmten Bereich des Kraftfahrzeugs (z.B. Tür oder Sitz) vorgesehener LED-Einheiten genutzt werden. Bei der Verwendung der erfindungsgemäßen Beleuchtungsvorrichtung kann ferner die bestehende LIN-Architektur in einem Kraftfahrzeug erhalten bleiben. Ebenso können an sich bekannte LED-Einheiten eingesetzt werden. Es muss lediglich eine geeignete Umsetzung der LIN-Signale auf dem LIN-Bus in Signale eines SPI-Busses realisiert werden.The variant of the invention described above has a number of advantages. In particular, by the implementation of a signal on a LIN bus in an SPI signal can be achieved driving a very large number of LED units. In addition, by using the software SPI method, any pins in a corresponding processing module can be used to generate signals for the SPI bus. In particular, if necessary, only a single processing module can be used to control all LED units provided in a specific area of the motor vehicle (eg door or seat). When using the lighting device according to the invention, furthermore, the existing LIN architecture can be retained in a motor vehicle. Likewise, known per se LED units can be used. It is only necessary to implement a suitable conversion of the LIN signals on the LIN bus into signals of an SPI bus.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Verarbeitungsmodulprocessing module
101101
LIN-TransceiverLIN Transceivers
102102
Mikroprozessormicroprocessor
22
interner Datenbusinternal data bus
33
LED-EinheitenLED units
301,302,303301,302,303
LEDsLEDs
44
integrierte Schaltungintegrated circuit
55
Spannungsversorgungpower supply
66
Kraftfahrzeug-DatenbusMotor vehicle data bus
CLCL
Leitung für TaktsignalLine for clock signal
DLDL
Datenleitungdata line
L1, L2L1, L2
Stromleitungenpower lines
RERE
Spannungsreglervoltage regulators
DIDI
serieller Dateneingangserial data input
DECDEC
Decoderdecoder
SR1, SR2, SR3SR1, SR2, SR3
Schieberegistershift register
G1, G2, G3G1, G2, G3
PWM-GeneratorenPWM generators
OSOS
Oszillatoroscillator
COCO
Stromausgangcurrent output
VDD, VREG, VSSVDD, VREG, VSS
Spannungsanschlüssevoltage connections
CKI, CKOCKI, CKO
Anschlüsse für TaktsignalConnections for clock signal
SDI, SDOSDI, SDO
Datenanschlüssedata connections
OSCIOSCI
Anschluss für OszillatorsignalConnection for oscillator signal

Claims (14)

  1. An illumination device for a motor vehicle, comprising one or more processing modules (1) and also an internal data bus (2) and a plurality of LED units (3);
    characterised in that
    the internal data bus (2) is an SPI bus or a differential data bus which encodes digital data by means of a voltage difference between two lines; wherein several LED units (3) from among the plurality of LED units (3) are associated with a respective processing module (1) and the respective processing module (1) is coupled with the associated LED units (3) via the internal data bus (2);
    wherein the associated LED units (3) in each case comprise one or more LEDs (301, 302, 303) and an integrated circuit (4), and are connected to a power supply (5) for the LED or LEDs (301, 302, 303);
    wherein the respective processing module (1) is set up for coupling to a motor vehicle data bus (6), in order to receive first digital control commands for operating the illumination device from the motor vehicle data bus (6), convert them and pass them as second digital control commands to the internal data bus (2);
    wherein the associated LED units (3) are set up to supply their LEDs (3) with current from the power supply (5) based on the second digital control commands on the internal data bus (2) by means of the integrated circuits (4).
  2. An illumination device according to Claim 1, characterised in that the processing module or modules (1) are set up for coupling to a motor vehicle data bus (6) in the form of a LIN bus.
  3. An illumination device according to Claim 1 or Claim 2, characterised in that the internal data bus (2) is an SPI bus and the processing module or modules (1) are configured such that the first digital control signals are passed to the SPI bus by means of software SPI and/or hardware SPI.
  4. An illumination device according to Claim 1 or Claim 2, characterised in that the internal data bus (2) is a differential data bus in the form of an APIX bus.
  5. An illumination device according to one of the preceding claims, characterised in that a respective processing module (1) at least of some of the processing modules (1) is coupled with the internal data bus (2) such that for several different subsets of LED units (3) associated with the respective processing module (1) in each case one or more data lines (DL) of the internal data bus (2) which are associated only with the respective subset are connected to the respective processing module (1), in order to transmit the second digital control commands thereover.
  6. An illumination device according to one of the preceding claims, characterised in that the illumination device comprises an individual processing module (1) for all the LED units (3) of the plurality of LED units (3).
  7. An illumination device according to one of the preceding claims, characterised in that one or more of the LED units (3) from among the plurality of LED units (3) are RGB LED units with a red, green and blue LED and/or RGBW LED units with a red, green, blue and white LED.
  8. An illumination device according to one of Claims 1 to 6, characterised in that one or more of the LED units from among the plurality of LED units are white-light LED units with a white LED.
  9. An illumination device according to one of Claims 1 to 6, characterised in that one or more of the LED units (3) from among the plurality of LED units (3) are monochrome LED units with a monochrome LED.
  10. An illumination device according to one of the preceding claims, characterised in that one or more of the LED units (3) from among the plurality of LED units (3) is/are configured in each case such that the integrated circuit (4) and the LED or LEDs (301, 302, 303) of the respective LED unit (3) are integrated in a common housing.
  11. An illumination device according to one of the preceding claims, characterised in that one or more of the LED units (3) from among the plurality of LED units (3) is/are set up in each case to supply the LED or LEDs (301, 302, 303) of the respective LED unit (3) with current from the power supply (5) by means of pulse-width modulation.
  12. An illumination device according to one of the preceding claims, characterised in that one or more of the LED units (3) from among the plurality of LED units (3) is/are set up in each case to supply the LED or LEDs (301, 302, 303) of the respective LED unit (3) with current from the power supply (5) by means of setting variable current levels.
  13. An illumination device according to one of the preceding claims, characterised in that the illumination device is an interior illumination means in the motor vehicle or an exterior illumination means on the outside of the motor vehicle.
  14. A motor vehicle, comprising one or more illumination devices according to one of the preceding claims.
EP16790614.8A 2015-11-16 2016-11-03 Lighting device for a motor vehicle Active EP3378281B1 (en)

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DE102015222504.6A DE102015222504A1 (en) 2015-11-16 2015-11-16 Lighting device for a motor vehicle
PCT/EP2016/076549 WO2017084881A1 (en) 2015-11-16 2016-11-03 Lighting device for a motor vehicle

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EP3510721A1 (en) * 2016-09-09 2019-07-17 ELMOS Semiconductor Aktiengesellschaft Apparatus for actuating electrical and/or electronic components of a motor vehicle module, and motor vehicle module of this kind
SG11201910894PA (en) 2017-07-11 2020-01-30 Inova Semiconductors Gmbh Energy-efficient exchange of data frames
EP3478031B1 (en) 2017-10-30 2020-06-24 Melexis Technologies NV Bus protocol for dynamic lighting application
CN111801913B (en) * 2018-03-02 2022-09-27 艾尔默斯半导体欧洲股份公司 Method and device for controlling electrical and/or electronic components of a motor vehicle module
FR3090524B1 (en) 2018-12-20 2021-04-30 Valeo Vision A device for lighting the interior of the passenger compartment of a motor vehicle comprising a light source provided with an integrated controller
DE102019124960A1 (en) * 2019-09-17 2021-03-18 Bayerische Motoren Werke Aktiengesellschaft Method for operating a lighting device for a motor vehicle
EP4280823B1 (en) 2022-05-16 2024-02-28 Melexis Technologies NV Advanced bus protocol for dynamic lighting

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