WO2013076069A1 - Light, control unit therefor and arrangement of light and control unit, with temperature and type detection by means of thermistor - Google Patents
Light, control unit therefor and arrangement of light and control unit, with temperature and type detection by means of thermistor Download PDFInfo
- Publication number
- WO2013076069A1 WO2013076069A1 PCT/EP2012/073082 EP2012073082W WO2013076069A1 WO 2013076069 A1 WO2013076069 A1 WO 2013076069A1 EP 2012073082 W EP2012073082 W EP 2012073082W WO 2013076069 A1 WO2013076069 A1 WO 2013076069A1
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- Prior art keywords
- control unit
- voltage
- connection
- lamp
- terminal
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Classifications
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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
- H05B47/185—Controlling the light source by remote control via power line carrier 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
- H05B45/37—Converter circuits
-
- 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]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
- H05B45/46—Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines
-
- 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]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/56—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving measures to prevent abnormal temperature of the LEDs
-
- 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
- H05B47/20—Responsive to malfunctions or to light source life; for protection
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Definitions
- the invention relates to a luminaire, in particular an LED headlamp, for a motor vehicle, having a connection for connection to a control unit, via which the luminaire can be supplied with electrical energy by the control unit and via which the luminaire can be controlled by the control unit, with a Ground connection and with one or more lamps, which is connected on the one hand to the connection for connection to the control unit and on the other hand to the ground terminal or are.
- the invention further relates to a control device for controlling an aforementioned lamp and for supplying the lamp with electrical energy, wherein the control device has a DC-DC converter, with which a voltage between an output terminal for connecting to the lamp and a ground terminal can be provided wherein the voltage is in the first voltage range and has a course in which pulses and pauses alternate.
- the invention also relates to an arrangement of an aforementioned lamp and an aforementioned control unit.
- Light-emitting diodes as lighting means in a luminaire, in particular in a headlight of a motor vehicle, require electronics for controlling.
- the electronics can be integrated in a control unit on or in the light or in a central control unit in the vehicle.
- the LEDs are usually connected via two short electrical lines to the control electronics.
- the light is supplied via a positive supply voltage line and a ground line, which is fed back into the control unit, so that no Differential voltage between the ground potential in the control unit and the ground connection of the lamp may occur.
- the two supply lines to the luminaire in the wiring harness of the vehicle must be additionally accommodated. Therefore, it is advantageous if only one supply line to the load is required and the ground terminal of the lamp is connected via a short line within the lamp to the vehicle ground. As a result, the separate ground line can be saved from the light to the control unit in the harness.
- load information is required for safe operation of the luminaire.
- luminaires with LEDs are classified according to so-called light classes.
- the constant current for the light emitting diodes of the luminaire must be set by the control unit.
- the constant current must be reduced so that the light-emitting diodes are protected against thermal destruction.
- This load information namely the light class of the luminaire and the temperature of the luminaire, are provided in the prior art by a coding resistor and an NTC resistor on an LED carrier.
- the load information must be read out of the luminaire by the control unit.
- control unit is mounted directly on the headlight, these components can be connected via short lines to the electronics of the control unit.
- BCM Body Controller Module
- the lamp has a first resistance component with a temperature-dependent resistor, which - according to a first variant - instead of or the lighting means in the connection between the connection for connection to the control unit and the ground terminal is switchable or -
- a second variant - that is part of a power source, which is arranged parallel to the one or more bulbs or instead of the one or more bulbs between the connection for connection to the control unit and to the ground terminal.
- a measurement signal for detecting the resistance component can be applied to the same connection of the luminaire for connection to the control unit, via which the luminaire can also be supplied with electrical energy for operating the luminous means or the illuminant.
- first resistance elements with different nominal resistances corresponding to the built-in light classes in the luminaires can be provided in different luminaires. Based on the nominal resistance then the light class and based on the current resistance, the temperature can be determined. This information must be able to be read out of the luminaire. If, in principle, the determination of the resistance of the first resistance component is possible, a distinction can be made between the nominal resistance and the temperature-related resistance, if the determination of the nominal resistance is carried out only at times when the lamp is not heated by the operation and also the environment of Luminaire is not or not excessively raised.
- Such a condition can for example to start a car ride. Since the light class of a luminaire changes at most when replacing the luminaire, it is basically sufficient if the light class of the luminaire is determined once, namely at the time of connection of the luminaire to the control unit.
- the innovation of the information transmission via the supply line is that the load information from the lamp to the controller is carried by a current through the first resistance device, which then flows when the one or more bulbs of the lamp is switched off in a pause between two pulses of the supply voltage or are. These breaks are not used for energy transfer from the controller to the luminaire and are therefore available for use in transmitting information. Both the energy transfer and the information transfer thus takes place with electricity through the one conductor of the supply line.
- the first resistance component instead of or the light source between the connection of the lamp for connection to the controller connected.
- a constant current source with the first resistance component is connected in parallel with the lighting means or in place of the lighting means or between the connection for connection to the control unit and with the ground connection.
- a first controllable switch can be arranged in series with the luminous means or in rows to form a circuit from the luminous means.
- the luminaire may have a control with which the first controllable switch can be switched on if a voltage is applied to the connection for connection to the control device with respect to the ground connection, which lies in a first voltage range.
- the first controllable switch can be switched off if a voltage is applied to the connection for connection to the control device with respect to the ground connection, which lies in the second, third or fourth voltage range, which are different from the first voltage range.
- the lighting means or the lighting means of the lamp can be switched into a current path between the connection for connection to the control unit and the ground terminal.
- a luminaire according to the invention can furthermore have a second controllable switch in series with the first resistance component.
- a second controllable switch With the control of the second controllable switch can be turned on or conductive, when applied to the terminal for connection to the control unit, a voltage relative to the ground terminal, which lies in the second voltage range.
- the second switch may be turned off with the controller when the terminal for connection to the controller has a voltage across the ground terminal that is in the first, third, or fourth voltage range that is different than the second voltage range.
- the first resistance component can be switched into a current path between the connection for connection to the control unit and the ground connection. Since the luminaire and the control unit are usually connected via plugs to the line connecting the two components, the measured values can be influenced by other factors:
- the voltage offset also called mass offset
- the luminaire and the control unit which may arise due to different ground levels in the vehicle.
- the voltage offset and the debris resistance can lead in unfavorable cases to a faulty detection of the light class and the temperature when the measurements are made via the line to the luminaire. If a very accurate temperature detection is required, these influences should be considered.
- Information about the ground offset and the dirt resistance can be provided to a control device in addition to the information about the temperature or the light class in differentiated voltage ranges via a voltage measurement of a lamp according to the invention.
- a second resistance component can also be incorporated in the luminaire to determine the mass offset.
- a luminaire according to the invention can enable detection of the dirt resistance.
- a third controllable switch can be arranged. With the control of a luminaire according to the invention, the third controllable switch can advantageously be switched on if a voltage with respect to the ground connection is connected to the connection for connection to the control unit. lying in a third or fourth voltage range. With the controller, the third controllable switch can be switched off if a voltage is applied to the connection for connection to the control device with respect to the ground connection, which lie in the first or second voltage range, which are different from the third and the fourth voltage range.
- the detection of the load information of a lamp according to the invention requires a suitable controller.
- control device has a DC-DC converter with which a voltage can be provided between an output connection for connection to the luminaire and a ground connection, the voltage in the first voltage range and has a course in which alternate pulses and pauses.
- control unit has at least one voltage regulator with which a voltage can be provided in the pauses of the voltage provided by the DC-DC converter between the output terminal and a ground terminal, which voltage is in the second, third or fourth voltage range.
- the voltage regulator preferably has a first output connected to the output terminal of the controller via a third resistance device.
- a voltage in the second or in the third voltage range can be made available via the first output.
- the voltage regulator may further comprise a second output connected to the output terminal via a series arrangement of a fourth resistance component and a fifth resistance component, wherein the second output of the current regulator is connected to the fourth resistance component and the output terminal of the controller is connected to the fifth resistance component. Via the second output, a voltage in the fourth voltage range can be provided.
- the resistance of the fifth resistance component is preferably greater than that of the third resistance component. This means that a low-impedance supply of the luminaire with a voltage in the second and third voltage range is possible, the significance of which will be explained later.
- the controller may include a sensor for measuring the voltage at the first output of the voltage regulator. Furthermore, the control unit may have a sensor for measuring the voltage between the fourth and the fifth resistance component. From the voltages which can be detected at the measuring points, the sought-after information about the luminaire can be determined with a control device according to the invention, which will be explained in more detail with reference to the following exemplary embodiment of the invention.
- FIG. 1 shows a lamp according to the invention in a first variant
- FIG. 3 shows a luminaire according to the invention in a second variant
- Fig. 6 shows a first example of a possible signal at the output of a control device according to the invention
- FIG. 8 is a simplified circuit diagram of an inventive arrangement in the first variant for determining a mass offset
- FIG. 9 is a simplified circuit diagram of an inventive arrangement in the first variant for determining a resistance to dirt
- FIG. 10 shows a simplified circuit diagram of an arrangement according to the invention in the first variant for determining the resistance of a first resistance component.
- the light L illustrated in FIG. 1 and the control unit C shown in FIG. 2 can be connected to an arrangement according to the invention with a line from the output terminal A1 of the control unit C to the connection for connection to the control unit of the light L.
- control unit C and the lamp L there is also a ground connection via the vehicle, in which the arrangement of the control unit C and the lamp L is used.
- control unit C and the light L each have at least one ground connection.
- the light emitting diodes LED of the lamp are powered by a DC-DC converter W in the control unit C with electrical energy.
- the DC-DC converter W is operated modulating.
- the control of the DC-DC converter W is effected by pulse width modulation.
- the DC-DC converter W is connected via a connection PWM with a controller, not shown, outside of the control unit.
- the controller can also be arranged inside the control unit.
- the DC-DC converter W provides at its output a voltage with respect to ground in a first voltage range U1 which drives the desired current through the light emitting diodes LED of the light L.
- the transmission of information about the light class of the lamp and the temperatures of the lamp, in particular arranged in the lamp L bulbs is provided.
- a light emitting diode LED are provided in the lamp L according to the figures 1.
- the light-emitting diodes LED must be protected against thermal destruction and must therefore not exceed a specific temperature.
- a temperature monitoring is provided.
- the information about the temperatures of the lamp L and the light class of the lamp L must be determined by the control unit C for correct control of the lamp L and transmitted to the control unit. Also for the transmission of this information, the single line between the output terminal A1 and the terminal E1 of the lamp L for connection to the control unit C is provided.
- control unit C In order for the information to be available in the control unit C, electronics L are constructed in the light L, which makes it possible for the information in the control unit C to be determined. Also, the control unit C comprises means that makes the determination of the information possible.
- the output terminal A1 of the control unit C is connected within the control unit C not only with the output of the DC-DC converter W with PWM control and adjustable current control.
- the output terminal A1 is also connected to two outputs U2R / U3R, U4R of a voltage regulator UREG.
- the voltage regulator UREG can at the output terminal voltages in a second voltage range U2, in a third voltage range U3 and in a fourth Provide voltage range U4.
- the position of these voltage ranges U2, U3, U4 relative to one another and to the first voltage range U1 of the voltage provided by the DC-DC converter W is shown in FIG.
- the voltage ranges U1 to U4 do not overlap each other. The highest voltages are found in the first voltage range U1 and the lowest voltages in the fourth voltage range U4.
- the voltage regulator UREG is controlled via an input ON / OFF so that it only provides a voltage at one of its outputs when there is a pause in the pulse-width-modulated output signal of the DC-DC converter W. During these pauses, the voltage regulator supplies either current via output U2R / U3R or output U4R, which flows from output U2R / U3R via a third resistance component R13 to the output terminal or from output U4R via a fourth resistance component R11 and a fifth resistance component R12. The resistance of the third resistance device R13 is smaller than the resistance of the fifth resistance device R12.
- the voltage at the output U2R / U3R can be measured via an amplifier V1.
- the measuring signal UV1 is available in the control unit C for further processing.
- the voltage at a node between the fourth resistance device R1 and the fifth resistance device R12 can also be measured.
- the voltage is amplified via an amplifier V2 and is available as measurement signal UV2 for further processing.
- the wiring of the output terminal in the control unit C additionally includes a transistor T11.
- a transistor T11 With the PWM control of the DC-DC converter with eg 200Hz, with the help of the transistor T11 and its wiring with a capacitor C11, resistor devices R15, R16 and a NOT gate at the beginning of Pauses the output terminal via a resistor component R14 are pulled to ground potential.
- a voltage in the first voltage range IM, in the second voltage range U2, in the third voltage range U3 or in the fourth voltage range U4 is applied to the terminal E1 of the light L.
- the voltage present at the terminal E1 leads to a different circuit of the currents driven by the voltage.
- the different circuit is achieved by a control of the lamp, the u. a. is realized by two Zener diodes D21, D22.
- the two zener diodes D21, D22 have different zener or breakdown voltages.
- the Zener diode D21 has a breakdown voltage that makes the Zener diode D21 conductive in the voltage ranges U1, U2, and U3 while blocking in the fourth voltage range U4.
- the zener diode D22 is conductive in the voltage range U1 and blocks in the voltage range U2, U3 and U4.
- the Zener diodes D21, D22 are connected with their cathodes to the terminal E1 and the anodes are connected via resistor components R22 and R25 to the ground terminal of the lamp L.
- the drain-source path of the transistor T26 is arranged in series with the LEDs LED and serves as the first controllable switch of the lamp L.
- the anodes of the LEDs LED are connected via a reverse polarity protection diode 23 to the terminal E1.
- the cathodes of the light-emitting diodes are connected via the drain-source path of the transistor T26 and a resistance component to the ground terminal of the light-emitting diode. connected. In the voltage range U1, therefore, the LEDs LED are turned on.
- a transistor T25 protects the light-emitting diode LED from destruction in the event of a short-circuit in the LED supply to the battery.
- the base of the transistor T25 is connected to the source of the transistor T26, the collector of the transistor T25 to the gate of the transistor T26 and the emitter of the transistor T25 to the ground terminal of the lamp L connected thereto.
- the transistor T24 which is turned on by the breakdown of the zener diode D22 connects the gate of a transistor T23 to the ground terminal of the luminaire L, for which reason the transistor T23 is forcibly blocked by the switching on of the transistor T24.
- the transistor T23 forms a second controllable switch of the lamp L and is connected in series with a first resistance component NTC with a temperature-dependent resistor.
- the series connection of the first resistance component NTC and the transistor T23 is connected on the one hand to the terminal E1 and on the other hand to the ground terminal of the lamp L.
- the Zener diode D21 Since the Zener diode D21 has a lower breakdown voltage than the Zener diode D22, the Zener diode D21 is conductive in the first voltage range U1 and in the second voltage range U2. The anode potential of the zener diode D21 thereby also rises above the potential of the ground terminal of the luminaire. This can be used to turn on the transistor T23 when the transistor T24 turns off, since then the base of the transistor T23 is connected via a resistor component R23 to the ground potential raised anode potential of the zener diode D21.
- the transistor T24 turns off when the anode potential of the zener diode D22 falls to the potential at the ground terminal of the lamp L, which is the case when a voltage across the ground potential drops at the terminal E1, which is in the second voltage range U2.
- a transistor T22 is turned on, whose gate is connected via a resistor component to the anode of the zener diode D21.
- the source of this transistor T22 is connected to the ground terminal of the lamp L.
- the drain is connected to the gate of a transistor T21, which forms a third controllable switch of the lamp L. If the transistor T22 is turned on, it connects the gate of the transistor T21 to the ground terminal of the lamp L, which is why the transistor T21 is forcibly locked by the turning on of the transistor T22.
- the first resistance element NTC forms the output load for the control unit C.
- the zener diode D21 also blocks. As a result, the transistors T23 and T22 also turn off, and thus the current through the first resistance device NTC and the ground connection of the gate of the transistor T21 is cut off.
- the gate of the transistor T21 is then connected via the resistor component R20 only to the terminal E1 of the lamp. The potential at the gate of the resistance device R20 is thereby raised and the transistor T21 turns on. Then, a current from the terminal E1 via a second resistance device R V and the drain-source path of the transistor T21 to the ground terminal of the lamp L flow.
- the transistor T21 remains conductive.
- the light emitting diodes LED are operated.
- the output U4R of the voltage regulator UREG is turned on. Then a current flows to the luminaire via the resistance components R11, R12.
- the resistance values of the resistance components R11, R12 are selected to be high-impedance relative to the second resistance component RMV in the luminaire L, so that a negative and positive ground offset can be evaluated in the control unit C and the dirt resistance has no major influence on the measurement.
- a voltage in the voltage range U4 sets. The voltage is measured at the measuring point UV2. With the aid of the measuring signal UV2, the mass offset L between the control unit C and the luminaire L can be calculated as follows (see also FIG. 8).
- a dirt resistance which may already be present in this measurement only falsifies the measurement for the mass offset insignificantly if the resistance of the second resistance component RMV is chosen to be much smaller than the dirt resistance (small factor 10). It is assumed that the comparatively small LED current in the vehicle contributes little or no negligible contribution to a mass offset between luminaire and BCM. A significant mass offset of up to +/- 1 V can be generated by high current consumers. Subsequently, the resistance to ground in the voltage range U3 from the parallel connection of the protective resistor with the second resistance component RMV is determined via a low-impedance control of the lamp L.
- the voltage U3R be switched on the analog voltage regulator output and the voltage U4R off.
- the supply of the lamp L is thus low-resistance via the third resistance component R13.
- the voltage at the output terminal A1 or at the terminal E1 is a voltage in the voltage range U3.
- a possible dirt resistance can be assumed in the range of> 10kOhm.
- the dirt resistance has only a small effect on the measurement of the temperature and usually does not have to be taken into account in low-resistance NTC resistors for temperature determination.
- the voltage U2R is set at the output of the voltage regulator UREG which generates a voltage in the voltage range U2 at the terminal E1 of the luminaire E1 or at the output terminal A1.
- the voltage causes a current flow in the zener diode D21, whereby the second resistance device R M v is deenergized and the defined NTC is activated as a load.
- the larger output voltage U2R is switched on in the control unit C on the voltage regulator.
- the difference measurement UV1 and U V2 the light class or the temperature can be calculated as follows, taking into account the mass offset and the dirt resistance (see FIG. 10):
- the light class a measurement takes place at defined times, for example after starting the vehicle before switching on the light.
- the luminaire has different NTC resistance values R T for different light classes.
- the light class can be determined by measuring the NTC resistors.
- Ground offset, dirt resistance and temperature can be continuously measured cyclically or at intervals in the off phases. (Figure 6). At lower accuracy requirements for the detection of temperature may optionally be dispensed with a continuous measurement of the mass offset and the dirt resistance. Then only a cyclic or sporadic measurement of the LED temperature takes place (FIG. 7). With continuous control of the LEDs LED without PWM the control is cyclically switched off for a short time in order to transmit the load information, which will not be perceived by human in the visible light image.
- the second resistance device may be part of a constant current source in the luminaire, as shown in FIG.
- the advantage of the power source is the independence of a possible ground offset.
- a ground offset does not affect the measurement in controller C and the calculation of the temperature with the controlled current source.
- the measurement is carried out in the same way as before in the voltage range U2.
- a recognition of the light class also takes place by a distinction of the nominal resistances of the second resistance component with temperature-dependent resistance.
- the residual current through the LEDs LED is very low in the voltage range U2, so that for the function no shutdown with the transistor T26 (Fig. 2) is required.
- the control for the voltage ranges U3 and U4 can be dispensed with in this embodiment of the luminaire L (FIG. 4).
- the resistance of the second resistance component NTC is calculated neglecting a reference current through a converter valve D24 according to the following formula:
- the device TL431 can be used as a converter valve.
- a datasheet for the TL431 device also describes the constant current source constructed with this converter component. The following improvements, simplifications or changes to the circuit concept are possible:
- the electronic circuit in the luminaire can also be realized in the form of an ASIC.
- the voltage ranges U2 to U4 are generated by the DC / DC converter. As a result, the separate voltage regulator UREG in the control unit C can be omitted.
- the temperature measurement can be done instead of the NTC resistor components by means of a voltage to the LEDs.
- the temperature can be measured using the LED voltage to UV2.
- a calibration of the LED voltage with the outside temperature in the control unit C via CAN after a longer LED off phase and defined LED temperature is made so that variations in the nominal LED voltages can be largely compensated.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112014011982A BR112014011982A2 (en) | 2011-11-22 | 2012-11-20 | luminaire with control unit and luminaire assembly and thermistor type and temperature sensing control apparatus |
CN201280065679.1A CN104054396B (en) | 2011-11-22 | 2012-11-20 | Luminous body, control equipment and the system being made up of luminous body and control equipment |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102011055594A DE102011055594A1 (en) | 2011-11-22 | 2011-11-22 | Luminaire, in particular LED headlights, for a motor vehicle. Control unit for the luminaire and arrangement of the luminaire and the control unit |
DE102011055594.3 | 2011-11-22 |
Publications (1)
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WO2013076069A1 true WO2013076069A1 (en) | 2013-05-30 |
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Family Applications (1)
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PCT/EP2012/073082 WO2013076069A1 (en) | 2011-11-22 | 2012-11-20 | Light, control unit therefor and arrangement of light and control unit, with temperature and type detection by means of thermistor |
Country Status (4)
Country | Link |
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CN (1) | CN104054396B (en) |
BR (1) | BR112014011982A2 (en) |
DE (1) | DE102011055594A1 (en) |
WO (1) | WO2013076069A1 (en) |
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DE102014207165A1 (en) * | 2014-04-15 | 2015-10-29 | Automotive Lighting Reutlingen Gmbh | Automotive lighting system |
DE102017008107A1 (en) | 2017-08-26 | 2018-04-19 | Daimler Ag | Method for determining a temperature of a vehicle component |
DE102017126044A1 (en) | 2017-11-08 | 2019-05-09 | HELLA GmbH & Co. KGaA | Circuit arrangement of a lighting unit of a headlight for a vehicle |
CN109548243A (en) * | 2018-12-26 | 2019-03-29 | 马瑞利汽车零部件(芜湖)有限公司 | A kind of headlight fictitious load circuit arrangement |
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JP2004330819A (en) * | 2003-05-01 | 2004-11-25 | Koito Mfg Co Ltd | Lighting fixture for vehicle |
JP5152714B2 (en) * | 2007-09-20 | 2013-02-27 | ハリソン東芝ライティング株式会社 | Light emitting device and lamp |
FR2922077B1 (en) * | 2007-10-09 | 2011-04-01 | Zedel | PORTABLE ELECTROLUMINESCENT DIODE ELECTRICAL LAMP, TEMPERATURE PROTECTED BY VARIABLE THERMAL COEFFICIENT RESISTANCE |
JP5006180B2 (en) * | 2007-12-27 | 2012-08-22 | 株式会社小糸製作所 | Lighting control device for vehicle lamp |
-
2011
- 2011-11-22 DE DE102011055594A patent/DE102011055594A1/en not_active Withdrawn
-
2012
- 2012-11-20 BR BR112014011982A patent/BR112014011982A2/en not_active IP Right Cessation
- 2012-11-20 WO PCT/EP2012/073082 patent/WO2013076069A1/en active Application Filing
- 2012-11-20 CN CN201280065679.1A patent/CN104054396B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1379108A1 (en) * | 2002-07-04 | 2004-01-07 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | LED supply and identification unit |
DE102007009104A1 (en) * | 2007-02-24 | 2008-08-28 | Lear Corporation Gmbh | Control circuit for clocked driving at least one light emitting diode |
US20090085503A1 (en) * | 2007-09-28 | 2009-04-02 | Toyoda Gosei Co., Ltd. | On-vehicle LED illumination device |
DE102008039530A1 (en) * | 2008-08-23 | 2010-02-25 | Hella Kgaa Hueck & Co. | Diode assembly i.e. LED, temperature detecting device, has measuring device connected with connecting terminals, where measuring device has resistor with temperature dependent resistance value indicating temperature of diode assembly |
Also Published As
Publication number | Publication date |
---|---|
BR112014011982A2 (en) | 2017-05-30 |
CN104054396B (en) | 2016-10-26 |
DE102011055594A1 (en) | 2013-05-23 |
CN104054396A (en) | 2014-09-17 |
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