EP1289341A2 - Luminaire automobile avec circuit et plaque conductrice associés - Google Patents

Luminaire automobile avec circuit et plaque conductrice associés Download PDF

Info

Publication number
EP1289341A2
EP1289341A2 EP02016583A EP02016583A EP1289341A2 EP 1289341 A2 EP1289341 A2 EP 1289341A2 EP 02016583 A EP02016583 A EP 02016583A EP 02016583 A EP02016583 A EP 02016583A EP 1289341 A2 EP1289341 A2 EP 1289341A2
Authority
EP
European Patent Office
Prior art keywords
circuit
circuit board
diode
resistance
branches
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02016583A
Other languages
German (de)
English (en)
Other versions
EP1289341B1 (fr
EP1289341A3 (fr
Inventor
Joachim Brune
Frank Vormbaum
Ludwig Schulze Gronover
Patrick Mehlhorn
Achim Schulte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP1289341A2 publication Critical patent/EP1289341A2/fr
Publication of EP1289341A3 publication Critical patent/EP1289341A3/fr
Application granted granted Critical
Publication of EP1289341B1 publication Critical patent/EP1289341B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

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

Definitions

  • the present invention relates to a motor vehicle lamp, a Circuit arrangement for a motor vehicle light and a Printed circuit board for a car light.
  • the circuit arrangement has two supply connections, one Resistor circuit, a diode circuit and one or several LEDs on.
  • Such circuitry are usually arranged on printed circuit boards, the Printed circuit boards with a housing lower part and at least one partially transparent housing upper part of the vehicle light form.
  • diode switching is necessary to voltage spikes too prevent that could destroy the light-emitting diodes.
  • diode circuits are provided so that the Luminaire independent of the polarity of the LEDs to the external voltage of the electrical system (12 V or 24 V DC voltage) can be connected.
  • the rectified voltage is then applied to the outputs of the Diode circuit tapped and the resistance circuit fed.
  • the operating voltage of the LEDs itself if several are connected in series, as a rule is significantly below the voltage of the vehicle electrical system, be the light-emitting diodes with resistors of Resistor circuit connected in series, so the voltage between the resistors of the resistance circuit and the Divide LEDs (voltage divider).
  • such Circuit arrangements, printed circuit boards with such Circuit arrangements and luminaires are from the state of Technology widely known.
  • circuit arrangements are often used in the automotive sector as Taillights, brake lights or indicators used.
  • the use of the circuit arrangement and the Printed circuit boards with such a circuit arrangement but not limited to the examples mentioned.
  • a problem with the known automotive lights arises when a printed circuit board with the circuit arrangement the influence is exposed to moisture or even moisture. This can be the case, if the housing of the lamp due to Damage or aging shows leaks which rainfall moisture or water spray in the Lamp penetrates. Often penetrate with moisture Contaminants such as dirt or salts in the lamp. In such cases, by electrochemical corrosion and Electrolysis creepage distances arise on the circuit board. Furthermore, conductive sludge can form, the small potential gaps on the PCB, for example between contacts and components, bridging. Is the Lamp almost flooded with a saline solution, outgassing, sparks and arcs can become visible which in rare cases lead to the burning down of the luminaire can.
  • the invention is therefore based on the object, the Circuit arrangement, the circuit board and the lamp itself, such that the risk of creepage distances is largely excluded.
  • This task is first solved by the inputs the resistance circuit directly with the Supply connections connected to that with the outputs the resistance circuit, the inputs of the diode circuit are connected and that preferably in series switched LEDs to the outputs of the diode circuit are connected.
  • the advantage of over the prior art swapped Arrangement of the diode circuit and the resistance circuit is the following:
  • In the prior art is due to the Supply connections as well as at the inputs and outputs of the Diode circuit to a voltage corresponding to the voltage of the Vehicle electrical system corresponds or is slightly lower than that Voltage of the electrical system. This relative to the Operating voltage of the LEDs high voltage is found thus at several points of the circuit arrangement.
  • In the The circuit arrangement according to the invention is the Resistor circuit upstream of the diode circuit. Between the outputs of the resistor circuit then falls but only a tension that essentially the Operating voltage of the LEDs corresponds.
  • In the The circuit arrangement according to the invention finds the high Voltage of the electrical system only to the Supply connections, d. H.
  • the resistance circuit can at least have two parallel branches, on the one hand with an input and on the other hand with an output of Resistor circuit are connected.
  • the resistance circuit serves, as already described, to the voltage of the electrical system to divide that over the light emitting diodes only their operating voltage drops from, while the remaining voltage in the resistance circuit in heat is implemented.
  • the resistors of the resistance circuit and The light-emitting diodes thus form a voltage divider. Is to it in the known from the prior art Circuitry common that the resistors of the Resistor circuit connected directly in series are.
  • each of the branches can be at least two parallel have switched resistors.
  • the diode circuit of the electrical circuit arrangement can according to the invention, two branches connected in parallel have, on the one hand with an entrance and on the other hand are connected to an output of the diode circuit.
  • a diode there is arranged in the one branch, a diode, the is connected in the same direction to the light emitting diodes.
  • This diode serves, as already described, Capture voltage spikes and so before the light emitting diodes to prevent damage.
  • the electrical circuit arrangement a rectifier bridge circuit as a diode circuit exhibit. This is possible, the circuit arrangement regardless of the polarity to connect to the electrical system.
  • the electrical circuit arrangement according to the invention advantageously realized in a circuit board.
  • the PCB has the supply connections preferably on top of the circuit board.
  • the Areas are in accordance with the invention in opposite Arranged areas.
  • the areas with the Supply connections can be diagonally opposite.
  • the branches of the resistance circuit can also be in be arranged opposite areas. Also the Areas with the branches can the resistance circuit lie diagonally opposite.
  • the PCB between the respective areas with the Supply connections and / or the branches of Resistor circuit one or more times with slots Mistake. These slots prevent yourself Forming leakage paths on the top of the circuit board can.
  • Such a circuit board can be in a lamp with a Housing base, an at least partially transparent Be used housing upper part.
  • the upper housing part and / or the lower housing part can then webs according to the invention have, which rest on the surface of the circuit board or engage in the slots of the circuit board.
  • the on the Surface of the circuit board resting or in the slots engaging webs prevent moisture transport inside the light, where it areas of the light at least partially against each other.
  • the inventive Circuit arrangement comprises a resistance circuit 1 Resistors 11, 12, 13, 14 on. Between the two Inputs 15, and 16, which at the same time also the Supply terminals of the circuit form, and the two outputs 25, 26 of the resistor circuit 1 is a Parallel circuit provided in each case two resistors. Between the input 15 and the output 25 are the Resistors 11, 12 arranged in parallel while the resistors 13, 14 in parallel between the input 16 and the output 26 are connected.
  • the outputs 15, 16 of the resistance circuit 1 form at the same time inputs of a diode circuit 2 of diodes 21, 22, 23, 24 wherein the diodes 21, 22, 23, 24 in a Rectifier bridge circuit are arranged. Outputs of the Rectifier bridge circuit thereby also form the Outputs 35, 36 of the diode circuit.
  • the outputs 35, 36 of the diode circuit 2 are over Light-emitting diodes 31, 32 connected to each other.
  • the described arrangement of the resistance circuit 1, the Diode circuit 2 and the LEDs 31, 32 has the Advantage that compared to the over the light emitting diodes 31, 32 sloping at the supply terminals 15, 16 applied high voltage no further time in the circuit occurs.
  • the possibility of creepage distances with one Voltage drop equal to the voltage at the Supply terminals 15, 16 is thus on a Creepage distance between the supply connections reduced.
  • FIG. 2 From the schematic representation of FIG. 2 it can be seen that like the component of a circuit arrangement according to FIG. 1 a circuit board 4 according to the invention are arranged.
  • the Supply terminals 15, 16 are opposite in diagonal lying areas 41, 42 of the circuit board 4 is provided.
  • the resistors 11, 12 and 13, 14 Immediately in the vicinity of the supply terminals 15, 16 are the resistors 11, 12 and 13, 14 attached, so that as short as possible between the tracks Supply terminals 15, 16 and the resistors 11, 12, 13, 14 exist. This is advantageous because so the Tracks the high voltages lead short and local are limited, which inhibits the formation of creepage distances. Furthermore, the areas of the supply terminals 15, 16 and the resistors 11, 12, 13, 14 - so the areas with the comparatively high voltages - through slots 43 in the Printed circuit board 4 from the remaining areas of the circuit board. 4 demarcated. This also causes the formation of Creepage distances difficult. In particular, the Supply connections 15, 16 in case of partial flooding the circuit board 4 in vertical installation is not shorted.
  • the components are arranged so that no Conductors are passed under the components.
  • the copper surfaces have been omitted as well
  • Supply connections 15, 16 are kept as small as possible been so that here only a small starting points to provide for creepage distances.

Landscapes

  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP02016583.3A 2001-08-16 2002-07-25 Luminaire automobile avec circuit et plaque conductrice associés Expired - Lifetime EP1289341B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10140275A DE10140275A1 (de) 2001-08-16 2001-08-16 Kfz-Leuchte, Schaltungsanordnung für eine Kfz-Leuchte und Leiterplatte für eine Kfz-Leuchte
DE10140275 2001-08-16

Publications (3)

Publication Number Publication Date
EP1289341A2 true EP1289341A2 (fr) 2003-03-05
EP1289341A3 EP1289341A3 (fr) 2005-09-14
EP1289341B1 EP1289341B1 (fr) 2018-08-29

Family

ID=7695685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02016583.3A Expired - Lifetime EP1289341B1 (fr) 2001-08-16 2002-07-25 Luminaire automobile avec circuit et plaque conductrice associés

Country Status (2)

Country Link
EP (1) EP1289341B1 (fr)
DE (1) DE10140275A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004114736A3 (fr) * 2003-06-20 2005-05-12 Yazaki Corp Dispositif d'eclairage a diodes electroluminescentes
WO2013037452A3 (fr) * 2011-09-12 2014-05-15 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Moteur électrique, notamment moteur de ventilateur de radiateur
KR20150077598A (ko) * 2013-12-27 2015-07-08 엘지디스플레이 주식회사 무선 디스플레이 싱크 장치
WO2017076641A1 (fr) * 2015-11-05 2017-05-11 Osram Gmbh Procédé de réduction de distances entre pistes conductrices dans des cartes de circuits imprimés électroniques et carte de circuits imprimés électronique ayant des distances réduites entre les pistes conductrices

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010014948A1 (de) 2010-04-14 2011-10-20 Hella Kgaa Hueck & Co. Anordnung zur energetischen Versorgung eines Leuchtmittels

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3737861A1 (de) * 1987-11-07 1989-05-18 Mueller Werner Dipl Wirtsch In Elektronisches leuchtelement mit optimierter lichtausbeute, verfahren zu seiner herstellung
US4965457A (en) * 1989-02-17 1990-10-23 Avi Wrobel Removable panel illuminating module
US5038255A (en) * 1989-09-09 1991-08-06 Stanley Electric Co., Ltd. Vehicle lamp
US5404282A (en) * 1993-09-17 1995-04-04 Hewlett-Packard Company Multiple light emitting diode module
US5699231A (en) * 1995-11-24 1997-12-16 Xerox Corporation Method of packaging high voltage components with low voltage components in a small space
WO1999020085A1 (fr) * 1997-10-10 1999-04-22 Se Kang Electric Co., Ltd. Circuit de lampe electrique et structure utilisant des diodes electroluminescentes
GB2349519A (en) * 1999-04-30 2000-11-01 Apollo Fire Detectors Ltd Bipolar LED indicator; fire alarm systems

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004114736A3 (fr) * 2003-06-20 2005-05-12 Yazaki Corp Dispositif d'eclairage a diodes electroluminescentes
US7458705B2 (en) 2003-06-20 2008-12-02 Yazaki Corporation LED illumination device
WO2013037452A3 (fr) * 2011-09-12 2014-05-15 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Moteur électrique, notamment moteur de ventilateur de radiateur
CN104145406A (zh) * 2011-09-12 2014-11-12 博泽沃尔兹堡汽车零部件有限公司 电动机、尤其是散热器风扇电机
US9590323B2 (en) 2011-09-12 2017-03-07 Brose Fahrzeugteile Gmbh & Co. Kg, Wuerzburg Electric motor, in particular a radiator fan motor, and a contact
CN104145406B (zh) * 2011-09-12 2018-01-02 博泽沃尔兹堡汽车零部件有限公司 电动机、尤其是散热器风扇电机
US9899754B2 (en) 2011-09-12 2018-02-20 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Wuerzburg Insulation-displacement contact
EP2756583B1 (fr) * 2011-09-12 2019-10-30 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Moteur électrique, notamment moteur de ventilateur de radiateur
KR20150077598A (ko) * 2013-12-27 2015-07-08 엘지디스플레이 주식회사 무선 디스플레이 싱크 장치
EP2889874B1 (fr) * 2013-12-27 2024-06-05 LG Display Co., Ltd. Dispositif dissipateur d'affichage sans fil
WO2017076641A1 (fr) * 2015-11-05 2017-05-11 Osram Gmbh Procédé de réduction de distances entre pistes conductrices dans des cartes de circuits imprimés électroniques et carte de circuits imprimés électronique ayant des distances réduites entre les pistes conductrices
US10257922B2 (en) 2015-11-05 2019-04-09 Osram Gmbh Method for reducing conductor track spacing in electronic circuit boards and electronic circuit board with reduced spacing between conductor tracks

Also Published As

Publication number Publication date
EP1289341B1 (fr) 2018-08-29
DE10140275A1 (de) 2003-03-06
EP1289341A3 (fr) 2005-09-14

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