EP1349434A3 - Lighting circuit, especially for cars - Google Patents

Lighting circuit, especially for cars Download PDF

Info

Publication number
EP1349434A3
EP1349434A3 EP03100572A EP03100572A EP1349434A3 EP 1349434 A3 EP1349434 A3 EP 1349434A3 EP 03100572 A EP03100572 A EP 03100572A EP 03100572 A EP03100572 A EP 03100572A EP 1349434 A3 EP1349434 A3 EP 1349434A3
Authority
EP
European Patent Office
Prior art keywords
light
emitting diode
lighting circuit
strands
cars
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
EP03100572A
Other languages
German (de)
French (fr)
Other versions
EP1349434B1 (en
EP1349434A2 (en
Inventor
Josef Studniorz
Bernd Schulte-Ewersum
Andreas Hinderlich
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 EP1349434A2 publication Critical patent/EP1349434A2/en
Publication of EP1349434A3 publication Critical patent/EP1349434A3/en
Application granted granted Critical
Publication of EP1349434B1 publication Critical patent/EP1349434B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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]
    • H05B45/40—Details of LED load circuits

Abstract

Es wird ein Beleuchtungsschaltkreis, insbesondere für Kraftfahrzeuge beschrieben. Dieser besteht aus einer Leuchtdiodenmatrix in kombinierter Reihen-/Parallelschaltung, die durch einen Versorgungsstromkreis mit einer Gleichspannung und/oder einem Konstantstrom versorgt wird, wobei die Leuchtdiodenmatrix aus n parallelgeschalteten Reihen mit jeweils m hintereinandergeschalteten Strängen besteht, wobei in jedem Strang eine Leuchtdiode angeordnet ist und zwischen den Strängen jeweils einer Reihe eine elektrisch leitende Querverbindung zu den jeweils benachbarten Reihen verläuft. Dabei ist erfindungsgemäß in mindestens einer Querverbindung mindestens ein Querwiderstand angeordnet ist.

Figure 00000001
A lighting circuit, in particular for motor vehicles, is described. This consists of a light-emitting diode array in combined series / parallel circuit, which is supplied by a supply circuit with a DC voltage and / or a constant current, wherein the light-emitting diode matrix consists of n parallel-connected rows, each with m series-connected strands, wherein in each strand a light-emitting diode is arranged and between the strands of each row an electrically conductive cross-connection to the respective adjacent rows extends. In this case, at least one transverse resistance is arranged according to the invention in at least one transverse connection.
Figure 00000001
EP03100572A 2002-03-30 2003-03-07 Lighting circuit, especially for cars Expired - Lifetime EP1349434B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10214423 2002-03-30
DE10214423A DE10214423A1 (en) 2002-03-30 2002-03-30 Lighting circuit, in particular for motor vehicles

Publications (3)

Publication Number Publication Date
EP1349434A2 EP1349434A2 (en) 2003-10-01
EP1349434A3 true EP1349434A3 (en) 2005-08-17
EP1349434B1 EP1349434B1 (en) 2007-04-25

Family

ID=27798266

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03100572A Expired - Lifetime EP1349434B1 (en) 2002-03-30 2003-03-07 Lighting circuit, especially for cars

Country Status (2)

Country Link
EP (1) EP1349434B1 (en)
DE (2) DE10214423A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4094477B2 (en) 2003-04-28 2008-06-04 株式会社小糸製作所 Vehicle lighting
WO2006090535A1 (en) * 2005-02-25 2006-08-31 Murata Manufacturing Co., Ltd. Led lighting apparatus
WO2006114832A1 (en) 2005-04-06 2006-11-02 Murata Manufacturing Co., Ltd. Acceleration sensor
DE102005053298B4 (en) * 2005-11-09 2012-08-16 Kromberg & Schubert Kg lighting device
DE102006029957A1 (en) * 2006-06-29 2008-01-03 Osram Opto Semiconductors Gmbh lighting device
TWI413453B (en) * 2008-11-20 2013-10-21 Epistar Corp Alternating current light emitting diode device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5663719A (en) * 1993-04-29 1997-09-02 Electro-Tech's LED traffic signal light with automatic low-line voltage compensating circuit
US6288497B1 (en) * 2000-03-24 2001-09-11 Philips Electronics North America Corporation Matrix structure based LED array for illumination

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2745459B1 (en) * 1996-02-28 1998-04-10 Valeo Electronique LIGHTING CIRCUIT WITH LIGHT EMITTING DIODES, ESPECIALLY FOR MOTOR VEHICLES, SIGNAL LIGHT, AND CONTROL PANEL INCORPORATING THE SAME
DE19734750C2 (en) * 1997-08-12 2003-04-30 Reitter & Schefenacker Gmbh Rear lights of motor vehicles
DE19835159C2 (en) * 1998-08-04 2001-08-02 Agfa Gevaert Ag Device for exposing photographic material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5663719A (en) * 1993-04-29 1997-09-02 Electro-Tech's LED traffic signal light with automatic low-line voltage compensating circuit
US6288497B1 (en) * 2000-03-24 2001-09-11 Philips Electronics North America Corporation Matrix structure based LED array for illumination

Also Published As

Publication number Publication date
EP1349434B1 (en) 2007-04-25
EP1349434A2 (en) 2003-10-01
DE50307113D1 (en) 2007-06-06
DE10214423A1 (en) 2003-10-09

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