DE102016207732A1 - lighting device - Google Patents

Abstract

The invention relates to a lighting device, in particular for a motor vehicle, comprising one or more multi-color LED units (3) each having an adjustable color location and adjustable brightness. Each multi-color LED unit (3) is a single semiconductor device having a plurality of single color LEDs (301, 302, 303, 304) of different colors and a microcontroller (4), the single color LEDs (301, 302, 303, 304). and the microcontroller (4) are surrounded by a housing of the semiconductor device. The microcontroller (4) is arranged to adjust each monochromatic LED (301, 302, 303, 304) of each multicolor LED unit (3) by adjusting the operating current of the respective monochromatic LED (301, 302, 303, 304). to operate in a normal operating mode and an override mode, wherein in the normal operating mode, the operating current of the respective single color LED (301, 302, 303, 304) by the microcontroller (4) is set at most to a predetermined maximum current (MS) and wherein in the override mode, the operating current the respective single color LED (301, 302, 303, 304) is set higher than the predetermined maximum current (MS) by the microcontroller (4). In the microcontroller (4) for each single-color LED (301, 302, 303, 304) a termination criterion (AK) is deposited, in the fulfillment of which operation in override mode is terminated.

Description

The invention relates to a lighting device, in particular for a motor vehicle.

From the prior art it is known to use multi-color LED units for lighting devices in motor vehicles. These LED units comprise a plurality of single color LEDs and are typically driven by LED drivers to vary the brightness and color location (i.e., the mixed color). For this purpose, a module is used with a microprocessor, which on the one hand assumes communication with a motor vehicle data bus and on the other drives the LED units, usually via PWM outputs. As a motor vehicle data bus is often the so-called. LIN bus (LIN = Local Interconnect Network) is used.

Also known in the art are novel multi-color LED units having an integrated circuit. In these LED units, the single-color 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.

In order to protect multicolor LED units from excessive operating currents or operating voltages, it is known from the prior art to operate the multicolor LED units only with specific maximum currents or maximum voltages. As a result, the brightness of conventional multi-color LED units is limited due to respective limitations of maximum voltage and current.

In the publication US 9,107,258 B1 describes an integrated circuit for controlling an LED, the circuit being protected against overvoltages.

The object of the invention is to provide a lighting device of at least one multi-color LED unit, which can radiate in operation with high brightness.

This object is achieved by the lighting device according to claim 1. Further developments of the invention are defined in the dependent claims.

The lighting device according to the invention is preferably provided for a motor vehicle, such as e.g. a car and possibly also a truck. The lighting device comprises one or more multi-color LED units, each with adjustable color location and adjustable brightness (i.e., light intensity). The term color locus is well known to those skilled in the art and describes the blend color produced by the respective multi-color LED unit. The color locus may be indicated, for example, as a location in a color diagram, in particular in a color diagram of the CIE standard valency system.

In the lighting device according to the invention, each multi-color LED unit is a single semiconductor device having a plurality and preferably at least three single color LEDs of different colors. The single semiconductor device further comprises a microcontroller. The monochrome LEDs and the microcontroller are surrounded by a package of the semiconductor device, i. they are housed in a common housing of the semiconductor device. In the lighting device according to the present invention, the microcontroller is configured to operate each single color LED of a respective multi color LED unit by setting the operating current of the respective single color LED in a normal operation mode and an override mode. The operating current is e.g. adjusted via pulse width modulation.

In the normal operating mode, the operating current of the respective single-color LED is set by the microcontroller at most to a predetermined maximum current, wherein this maximum current for the individual single-color LEDs may optionally be set differently. Preferably, this maximum current is in the milliampere range, in particular at about 10 to 15 mA. As a result, damage to the corresponding single-color LED are avoided even for longer periods of operation.

In contrast, when operating the respective single color LED in the override mode, the operating current of the single color LED is set higher than the predetermined maximum current by the microcontroller. In this case, a termination criterion is stored in the microcontroller for each single color LED, in the fulfillment of which operation in the override mode is terminated. If necessary, the termination criterion may be set differently for the individual single-color LEDs of the respective multi-color LED unit.

The lighting device according to the invention has the advantage that by means of a microcontroller, which is integrated in the respective multi-color LED unit, at least temporarily operating currents above the norm can be set, so that the corresponding multi-color LED unit lights brighter than usual. At the same time damage to the multi-color LED unit is avoided via a stored in the microcontroller termination criterion.

Depending on the configuration of the lighting device according to the invention, operation in the override mode can be different Light effects, such as a flash, be realized. When using the lighting device in a motor vehicle can be given by the operation in the override mode warnings to the driver, if the lighting device is provided in the interior of the vehicle. Furthermore, warnings can also be given to other road users by the lighting device if the lighting device is mounted on the outside of the motor vehicle.

In a particularly preferred embodiment, the lighting device according to the invention is configured such that in the normal operating mode by the microcontroller on the setting of the operating currents of the respective single color LEDs only such color locations and brightnesses of the respective multi-color LED unit can be adjusted that the deviation of the actual color location and the actual brightness of the set color location and the adjusted brightness is within a predetermined tolerance range. Compliance with this tolerance range can no longer be guaranteed when operating at least one single-color LED in the override mode. This ensures that in the normal operating mode of all single-color LEDs, the light of the respective multi-color LED unit can dedicate certain color locations and brightnesses and thus a predetermined color and brightness image can be generated. This criterion is broken when operating with excessive operating currents in the override mode, but this is not critical, since the override mode remains activated only until the fulfillment of a suitable termination criterion.

In a further, particularly preferred embodiment, the operating current of a respective single color LED in the override mode is at least twice as high, preferably three times as high as the predetermined maximum current. As a result, a particularly bright illumination of the corresponding single color LED is achieved.

In a preferred variant, a predetermined limiting current is also set for the override mode, which must not be exceeded by the operating current of the respective single-color LED, as otherwise direct damage or failure of the multicolor LED unit may occur.

Depending on the embodiment of the lighting device according to the invention, the above termination criterion can be set differently. In a variant, the termination criterion is met if the time span since the start of an operation in the override mode is longer than a predetermined maximum time duration, the maximum time duration being e.g. between 10 and 20 seconds. Here, one makes use of the fact that a short-term operation of a particular single-color LED with overcurrent usually does not lead to their damage.

In a further variant of the illumination device according to the invention, the termination criterion is met when the operating temperature of a respective multi-color LED unit exceeds a predetermined maximum temperature, the maximum temperature preferably being between 100 ° C and 130 ° C (e.g., 125 ° C). This takes into account that an operation of the respective multi-color LED unit with excessive operating temperatures leads to their damage.

• – die Zeitspanne seit Beginn eines Betriebs im Übersteuermodus ist länger als eine vorbestimmte Maximalzeitdauer;
• – die Betriebstemperatur der Mehrfarb-LED-Einheit überschreitet eine vorgegebene Maximaltemperatur.

Optionally, the above conditions regarding the maximum time duration and the maximum temperature may also be combined in a termination criterion. In this case, the abort criterion is fulfilled if one of the following two conditions exists, wherein the abort criterion contains both conditions:

• The period of time since the beginning of an operation in the override mode is longer than a predetermined maximum period of time;
• - The operating temperature of the multi-color LED unit exceeds a predetermined maximum temperature.

In other words, the abort criterion is always met if any of the two conditions just mentioned is met. With this embodiment, a very good protection of the respective multi-color LED unit from damage in override mode is achieved.

In a further variant of the lighting device according to the invention, the time span of the operation in the override mode and the operating temperature can be taken into account via a function in the termination criterion. This can be achieved with a suitable cost function. In this case, the termination criterion is met if the cost according to the cost function, which depends on the time since the start of an operation in the override mode and the operating temperature of a respective multi-color LED unit, exceed a cost threshold. The cost according to the cost function grows with increasing time since the start of an operation in the override mode and with increasing operating temperature. The time span and the operating temperature in this embodiment represent input variables of an algorithm which determines, using a cost function, whether the abort criterion for the input variables is fulfilled.

In a particularly preferred embodiment, in the semiconductor device at least a part of the multi-color LED units is a Temperature sensor integrated, which is adapted to measure the operating temperature of the respective multi-color LED unit. As a result, the current operating temperature of the multicolor LED unit can be determined particularly accurately and then taken into account, for example, in a corresponding termination criterion.

In a further variant, a temperature sensor for measuring the current operating temperature is dispensed with. Instead, the microcontroller of at least a portion of the multi-color LED units is configured to determine the operating temperature of the respective multi-color LED unit based on at least a portion of the operating voltages and / or operating currents of the single-color LEDs of the respective multi-color LED unit. This determined operating current can then in turn be incorporated into a corresponding termination criterion.

In a further preferred variant of the lighting device according to the invention, the microcontroller of at least a part of the multicolor LED units is configured such that it exceeds a predetermined threshold in the case where the operating temperature of a respective multicolor LED unit in the normal operating mode and / or in the override mode exceeds reduces the brightness of the respective multi-color LED unit. This will prevent the multi-color LED unit from being damaged due to excessive temperatures. In this case, a relationship can preferably be predetermined according to which the brightness of the multicolor LED unit is reduced the more, the more the predetermined threshold is exceeded. The predetermined threshold may optionally be set differently for the normal operating mode and the override mode.

In a particularly preferred embodiment, the lighting device according to the invention comprises a plurality of multi-color LED units connected to an internal data bus (i.e., a data bus within the lighting device). This internal data bus is in turn coupled to a processing module, the processing module being arranged to provide internal control commands for adjusting the brightness and color location of the individual multi-color LED units on the internal data bus. Preferably, the above processing module is arranged to receive external control commands from a motor vehicle data bus and to convert them to the above internal control commands.

In the embodiment just described, a simple control of the individual multi-color LED units is achieved via an internal data bus. The internal data bus may e.g. an SPI (Serial Protocol Interface) data bus, or optionally another data bus, such as a data bus. a differential data bus that encodes digital data about a voltage difference between two lines. The above motor vehicle data bus may, for example, be a LIN bus (LIN = Local Interconnect Network) or else a CAN bus (CAN = Controller Area Network).

In a further preferred embodiment, at least a part of the multicolor LED units comprises one or more RGB LED units and / or RGBW LED units. An RGB LED unit comprises, in a manner known per se, a red, green and blue single-color LED, and an RGBW LED unit also comprises a white-light LED in addition to a red, green and blue LED.

In a particularly preferred embodiment, the lighting device is an interior lighting in a motor vehicle or possibly also an exterior lighting on the outside of the motor vehicle. As a result, attractive lighting effects can be generated with a homogeneous appearance.

In addition to the lighting device described above, the invention relates to a motor vehicle, in particular a car or possibly also a truck, which comprises one or more of the lighting devices according to the invention or of preferred variants of these lighting devices.

An embodiment of the invention will be described below in detail with reference to the accompanying drawings.

Show it:

1 a schematic representation of an embodiment of a lighting device according to the invention; and

2 a detailed view of a LED unit 1 ,

In the following, an embodiment of the invention will be described with reference to a lighting device which is installed in a motor vehicle as interior lighting and as a lighting means a plurality of arranged on a belt multi-color LED units 3 includes. These multi-color LED units, which are also referred to simply as LED units hereinafter, each constitute a single semiconductor device having a plurality of single-color LEDs 301 to 304 and a microcontroller 4 The monochrome LEDs and the microcontroller are integrated in a common housing of the semiconductor device. The single color LED 301 is a red LED, the single color LED 302 a green LED that Single-color LED 303 a blue LED and the single color LED 304 a white LED. 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 driven via a digital data stream in the form of a bit stream, which is generated by means of an internal data bus 2 (ie, an internally provided in the lighting device data bus) is supplied to the individual LED units. The internal data bus comprises a line CL for the clock and a line DL for the bit stream.

The signals on the internal data bus 2 come from a processing module 1 that is connected to a LIN bus 6 of the motor vehicle is coupled. The processing module includes a LIN transceiver 101 , the corresponding digital signals for driving the LED units 3 from the LIN bus 6 as well as a microprocessor 102 which converts the tapped signals into corresponding data signals on the data line DL. The on the LIN bus 6 In this case, transmitted signals 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 it detects whether the light pattern corresponds to the current signal on the LIN bus 6 is provided for the lighting device. If so, this signal is sent by the microprocessor 102 in a corresponding signal for the internal data bus 2 implemented.

The internal data bus 2 may be an SPI bus, for example. Preferably, the signals for the SPI bus from the microprocessor 102 generated by software SPI. Software SPI is well known in the art and is a program library with any free pins of the microprocessor 102 can be used for signaling on the SPI bus. Alternatively, however, hardware SPI can also be used. Special SPI pins are provided for signal output to the SPI bus. The use of software SPI has the advantage of being in the internal data bus 2 several lines DL and CL for controlling a larger number of LED units 3 can be provided. As an alternative to an SPI bus, the internal data bus can also be designed as a differential data bus or as any other data bus. A differential data bus is characterized in that it encodes digital data via a voltage difference between two lines.

In the embodiment of the 1 In addition to the lines CL and DL, two power lines L1 and L2 are provided, which are connected to a DC voltage supply 5 are connected. Based on the bit stream received via the data line DL, a PWM modulation of the individual LEDs takes place 301 to 304 supplied current to thereby drive the LEDs according to the bit stream on the data line DL.

The structure of a single LED unit 3 out 1 is in detail in 2 shown. All illustrated components of the LED unit are integrated in a single semiconductor device. The signals of the data bus 2 be via a communication interface COM of the LED unit 3 receive. The clock signal of the clock line CL is sent to the microprocessor described below 401 while the data stream of the data line DL after decoding in the communication interface COM is given to 8-bit shift registers SR0, SR1, SR2, SR3 and SR4. The value output by the shift register SR0 indicates the desired overall brightness of the LED unit, whereas the values of the shift registers SR1 to SR4 output the color components of the individual single color LEDs to produce the desired mixed color. In particular, via the shift register SR1, the color component of the red LED 301 , via the shift register SR2 the color component of the green LED 302 , via the shift register 303 the color share of the blue LED 303 and over the shift register 304 the color share of the white LED 304 output.

The values of each shift register become the microcontroller 4 supplied, which consists of a logic or a microprocessor 401 and an associated nonvolatile EEPROM memory 402 consists. In this memory, inter alia, calibration data are stored, which come from a calibration of the LED unit and set for a given standard temperature value of the LED unit, how to set the operating currents of each single color LEDs, so that deriving from the shift register SR0 total brightness value and the color mixing (ie, the related color location) can be achieved according to the values from the shift registers SR1 to SR4.

In addition to the calibration data are in the memory 402 also maximum currents MS for the single single-color LEDs 301 to 304 deposited, wherein the values of these maximum currents for the individual LEDs are different. These maximum currents specify a normal operating mode, which will be described below. In addition, for each of the individual LEDs 301 to 304 a termination criterion AK in the memory 402 deposited, this being Abort criterion indicates the termination of an override mode and realized by a maximum duration MD and a maximum temperature MT, as also described below.

The microprocessor 401 accesses the operation of the single-color LEDs on the memory 402 stored values and also receives the current temperature value of a temperature sensor TS, which is integrated in the semiconductor device of the LED unit. This current temperature value corresponds to the operating temperature of the LED unit.

The microprocessor 401 can now operate the single color LEDs both in the above normal mode and in the above override mode. In the normal operating mode, only those operating currents in the individual single-color LEDs are set by the microprocessor, which do not exceed the corresponding maximum current MS of the respective single color LED. In this way, damage to the individual single-color LEDs is avoided by overcurrents even with prolonged operation. In addition, in the normal operating mode, it is ensured that all color locations and brightnesses of the LED unit set by the microcontroller via the operating currents 3 are chosen such that the actually generated color locations and brightnesses do not deviate more than a predetermined tolerance range from the set color locations and brightnesses. This ensures that the desired appearance is always reliably generated by the lighting device.

In contrast to the normal operating mode, in the override mode of a respective single-color LED, its operating current is set higher than the corresponding maximum current MS. Depending on the configuration, the operating current may be e.g. twice as large as the maximum current MS and possibly also be set higher. Thereby, the operation of the LED unit with particularly high brightness for special lighting effects, such. in the manner of a flashlight. By the termination criterion AK is thereby ensured that no damage to the respective single color LED occurs even with such a current increase.

In the embodiment described here, the termination criterion AK is determined based on a maximum time MD and a maximum temperature MT. The abort criterion AK is then fulfilled if the time duration after the beginning of the override mode in a respective LED unit is longer than the maximum time MD, this maximum period of time may also be set individually for the individual single color LEDs. The termination criterion is also satisfied when the operating temperature of the LED unit, which is measured via the temperature sensor TS, is higher than the maximum temperature MT, this maximum temperature may optionally be set specifically for the individual single-color LEDs again. By means of such a termination criterion, an efficient protection of the single-color LEDs in the override mode is achieved by limiting the time duration of this mode or the operating temperatures occurring thereby.

In a preferred embodiment of the embodiment just described, in the microprocessor 401 Also a temperature algorithm can be deposited, which is under access to the memory 402 determines the corresponding operating currents for the above-mentioned standard temperature value and corrects these operating currents when the temperature value from the temperature sensor TS deviates from the standard temperature value. The correction is designed in such a way that the desired brightness and the desired color location are set correctly in accordance with the values from the shift registers even with temperature fluctuations in the LED unit. Corresponding algorithms for temperature compensation are known per se from the prior art.

The operating currents for the individual LEDs 301 to 304 are provided via a voltage regulator RE, which consists of the in 1 shown power supply 5 receives the positive voltage VDD and the negative voltage VSS. The microprocessor 401 Further generates a clock for a corresponding oscillator OS, which is supplied to PWM generators G1, G2, G3 and G4. The operating currents of the individual LEDs 301 to 304 are generated in the generators G1 to G4 via pulse width modulation. The from the microprocessor 401 originating values of the operating currents are given to the individual generators G1 to G4. The generator G1 generates the current for the red LED by means of pulse width modulation 301 , the generator G2 is the power for the green LED 302 , the generator G3 is the power for the blue LED 303 and the generator G4 the power for the white LED 304 , The PWM signals generated by the individual generators, which reach the single-color LEDs via the current output CO, are then used for the LED unit 3 the appropriate light with the desired brightness and the desired color location according to the signal set via the internal data bus 2 to the LED unit.

In the embodiment just described, the current temperature value was measured by a temperature sensor TS on the semiconductor device of the LED unit 3 measured. Optionally, there is also the possibility that instead of measuring a temperature value, the current temperature is determined via characteristic curves which, for respective operating currents, have a relationship between indicate the operating voltage of the single single-color LEDs and the temperature of the LED unit. The operating voltage can be measured by a suitable voltage sensor in the LED unit. Such a type of temperature determination is familiar to the expert and is described for example in the document US 2015/0002023 A1 described.

The embodiments of the invention described above have a number of advantages. In particular, the operation of a multi-color LED unit with significantly greater brightness is enabled in an override mode to thereby generate special lighting effects, such as e.g. a flashlight, a warning to vehicle occupants or other road users and the like. At the same time, however, damage to the multi-color LED unit is avoided in this override mode, which is achieved by a suitable termination criterion, which depends in particular on the operating time in a started override mode and / or the operating temperature in this mode.

LIST OF REFERENCE NUMBERS

1

processing module

101

LIN Transceivers

102

microprocessor

2

internal data bus

3

Multi-color LED units

301, 302, 303, 304

Single-color LEDs

4

microcontroller

401

microprocessor

402

EEPROM

5

power supply

6

Motor vehicle data bus

CL

Line for clock signal

DL

data line

L1, L2

power lines

COM

Communication Interface

SR0, SR1, SR2, SR3, SR4

shift register

MS

maximum current

AK

termination criterion

MD

Maximum duration

MT

maximum temperature

TS

temperature sensor

G1, G2, G3, G4

PWM generators

OS

oscillator

RE

voltage regulators

VDD, VSS

tensions

CO

current output

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 9107258 B1 [0005]
• US 2015/0002023 A1 [0048]

Claims (15)

Lighting device, in particular for a motor vehicle, comprising one or more multi-color LED units ( 3 ), each having an adjustable color location and adjustable brightness, each multicolor LED unit ( 3 ) a single semiconductor device having a plurality of single color LEDs ( 301 . 302 . 303 . 304 ) of different colors and a microcontroller ( 4 ), where the single color LEDs ( 301 . 302 . 303 . 304 ) and the microcontroller ( 4 ) are surrounded by a housing of the semiconductor device, wherein the microcontroller ( 4 ) is designed to accept any single color LED ( 301 . 302 . 303 . 304 ) of a respective multi-color LED unit ( 3 ) by adjusting the operating current of the respective single color LED ( 301 . 302 . 303 . 304 ) operate in a normal operating mode and an override mode, wherein in the normal operating mode, the operating current of the respective single color LED ( 301 . 302 . 303 . 304 ) through the microcontroller ( 4 ) is set at most to a predetermined maximum current (MS) and wherein in the override mode, the operating current of the respective single color LED ( 301 . 302 . 303 . 304 ) through the microcontroller ( 4 ) is set higher than the predetermined maximum current (MS), wherein in the microcontroller ( 4 ) for each single-color LED ( 301 . 302 . 303 . 304 ) an abort criterion (AK) is deposited, at the fulfillment of which an operation in override mode is terminated. Lighting device according to claim 1, characterized in that in the normal operating mode by the microcontroller ( 4 ) via the setting of the operating currents of the respective single-color LEDs ( 301 . 302 . 303 . 304 ) only such color locations and brightnesses of the respective multi-color LED unit ( 3 ), that the deviation of the actual color location and the actual brightness from the set color location and the adjusted brightness is within a predetermined tolerance range, wherein compliance with this tolerance range is at least one single-color LED (FIG. 301 . 302 . 303 . 304 ) can no longer be guaranteed in override mode. Lighting device according to claim 1 or 2, characterized in that the operating current of a respective single color LED ( 301 . 302 . 303 . 304 ) in the override mode is at least twice as high as the predetermined maximum current (MS). Lighting device according to one of the predetermined claims, characterized in that the termination criterion (AK) is met when the time since the start of an operation in the override mode is longer than a predetermined maximum period of time (MD). Lighting device according to one of the preceding claims, characterized in that the termination criterion (AK) is met when the operating temperature of a respective multi-color LED unit ( 3 ) exceeds a predetermined maximum temperature (MT). Lighting device according to one of the preceding claims, characterized in that the termination criterion (AK) is satisfied when one of the following two conditions is present, wherein in the termination criterion both conditions are included: - the time since the beginning of an operation in the override mode is longer than a predetermined one Maximum duration (MD); - The operating temperature of the multi-color LED unit exceeds a predetermined maximum temperature (MT). Lighting device according to one of the preceding claims, characterized in that the termination criterion (AK) is met when the cost according to a predetermined cost function, which from the time since starting an operation in the override mode and the operating temperature of a respective multi-color LED unit ( 3 ), exceed a cost threshold, wherein the cost increases according to the given cost function with increasing time since the start of an operation in the override mode and with increasing operating temperature. Lighting device according to one of the preceding claims, characterized in that in the semiconductor device of at least a part of the multi-color LED units ( 3 ) is integrated a temperature sensor (TS) which is adapted to the operating temperature of the respective multi-color LED unit ( 3 ) to eat. Lighting device according to one of the preceding claims, characterized in that the microcontroller ( 4 ) at least a portion of the multi-color LED units ( 3 ) is adapted to the operating temperature of the respective multi-color LED unit ( 3 ) based on at least part of the operating voltages and / or operating currents of the single-color LEDs ( 301 . 302 . 303 . 304 ) of the respective multi-color LED unit ( 3 ) to investigate. Lighting device according to one of the preceding claims, characterized in that the microcontroller ( 4 ) at least a portion of the multi-color LED units ( 3 ) is designed such that in the event that the operating temperature of a respective multi-color LED unit ( 3 ) in normal operating mode and / or in override mode exceeds a predetermined threshold, the brightness of the respective multi-color LED unit ( 6 ) decreased. Lighting device according to one of the preceding claims, characterized in that the lighting device comprises a plurality of multi-color LED units ( 3 ) which is connected to an internal data bus ( 2 ) connected to a processing module ( 1 ), wherein the processing module ( 1 ) is set up to provide internal control commands for adjusting the brightness and color location of the individual multicolor LED units ( 3 ) on the internal data bus ( 2 to give). Lighting device according to claim 11, characterized in that the processing module ( 1 ) is adapted to external control commands from a motor vehicle data bus ( 6 ) and to convert into the internal control commands. Lighting device according to one of the preceding claims, characterized in that at least a part of the multi-color LED units ( 3 ) comprises one or more RGB LED units and / or RGBW LED units. Lighting device according to one of the preceding claims, characterized in that the lighting device is an interior lighting in a motor vehicle or an exterior lighting on the outside of the motor vehicle.  Motor vehicle comprising one or more lighting devices according to one of the preceding claims.

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