EP1945006A3 - LED switching device - Google Patents

LED switching device Download PDF

Info

Publication number
EP1945006A3
EP1945006A3 EP08100163.8A EP08100163A EP1945006A3 EP 1945006 A3 EP1945006 A3 EP 1945006A3 EP 08100163 A EP08100163 A EP 08100163A EP 1945006 A3 EP1945006 A3 EP 1945006A3
Authority
EP
European Patent Office
Prior art keywords
emitting diode
light emitting
switching device
branch
groups
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
EP08100163.8A
Other languages
German (de)
French (fr)
Other versions
EP1945006A2 (en
EP1945006B1 (en
Inventor
Arne Meinel
Stephan Schröder
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 EP1945006A2 publication Critical patent/EP1945006A2/en
Publication of EP1945006A3 publication Critical patent/EP1945006A3/en
Application granted granted Critical
Publication of EP1945006B1 publication Critical patent/EP1945006B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix

Landscapes

  • Led Devices (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

Leuchtdioden-Schaltungsanordnung umfassend Gruppen (1, 2; 3, 4; 5, 6) von parallele Zweigen (1 bis 6), wobei die Gruppen (1, 2; 3, 4; 5, 6) in Reihe angeordnet sind, wobei in zumindest einer ersten Gruppe (1, 2) zumindest ein erster Zweig (1) zumindest eine Leuchtdiode (D1) und zumindest ein zweiter Zweig (2) kein Leuchtdiode umfasst und wobei die Zweige (3 bis 6) in den weiteren Gruppen (3, 4; 5, 6) zumindest je eine Leuchtdiode (D3 bis D6) umfassen, wobei in dem ersten Zweig (1) der ersten Gruppe (1, 2) in Reihe zu der Leuchtdiode (D1) eine erste gesteuerte Stromquelle (Iq1) angeordnet ist.

Figure imgaf001
Light-emitting diode circuit arrangement comprising groups (1, 2; 3, 4; 5, 6) of parallel branches (1 to 6), the groups (1, 2; 3, 4; 5, 6) being arranged in series, wherein at least one first group (1, 2) at least one first branch (1) comprises at least one light emitting diode (D1) and at least one second branch (2) no light emitting diode and wherein the branches (3 to 6) in the further groups (3, 4 ; 5, 6) comprise at least one light emitting diode (D3 to D6), wherein in the first branch (1) of the first group (1, 2) in series with the light emitting diode (D1) a first controlled current source (Iq1) is arranged.
Figure imgaf001
EP08100163.8A 2007-01-11 2008-01-07 LED-circuit having series-connected groups of parallel-connected LED-strings. Active EP1945006B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007001716.4A DE102007001716B4 (en) 2007-01-11 2007-01-11 Light-emitting diode circuit arrangement and method for operating a light-emitting diode circuit arrangement

Publications (3)

Publication Number Publication Date
EP1945006A2 EP1945006A2 (en) 2008-07-16
EP1945006A3 true EP1945006A3 (en) 2013-12-04
EP1945006B1 EP1945006B1 (en) 2015-02-25

Family

ID=39277281

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08100163.8A Active EP1945006B1 (en) 2007-01-11 2008-01-07 LED-circuit having series-connected groups of parallel-connected LED-strings.

Country Status (2)

Country Link
EP (1) EP1945006B1 (en)
DE (1) DE102007001716B4 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014217070A1 (en) 2013-08-28 2015-03-05 Elmos Semiconductor Aktiengesellschaft Device for supplying at least one consumer with electrical energy or for providing electrical power for at least one consumer
DE102014012790B4 (en) 2014-08-27 2023-08-24 Elmos Semiconductor Se Process for controlling the operating current of a bridge circuit
DE102014012789B4 (en) 2014-08-27 2023-08-24 Elmos Semiconductor Se Device for regulating the operating current of an LED lighting unit
DE102014012787A1 (en) 2014-08-27 2016-03-17 Elmos Semiconductor Aktiengesellschaft Method for controlling the operating current of an LED lamp unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69709206T2 (en) * 1996-02-28 2002-08-22 Valeo Electronique Creteil Improvement of LED circuits, especially for motor vehicles, stop lights and control panels
US20060001381A1 (en) * 2004-06-30 2006-01-05 Robinson Shane P Switched constant current driving and control circuit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9313820U1 (en) * 1993-09-13 1994-01-20 Gebensleben, Enno, 22547 Hamburg Bicycle lights
US5765940A (en) * 1995-10-31 1998-06-16 Dialight Corporation LED-illuminated stop/tail lamp assembly
DE10025810B4 (en) * 2000-05-24 2014-01-23 SMR Patents S.à.r.l. Luminaire unit, in particular for exterior rearview mirrors of vehicles, preferably motor vehicles
JP2004090858A (en) * 2002-09-03 2004-03-25 Toyoda Gosei Co Ltd Stop lamp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69709206T2 (en) * 1996-02-28 2002-08-22 Valeo Electronique Creteil Improvement of LED circuits, especially for motor vehicles, stop lights and control panels
US20060001381A1 (en) * 2004-06-30 2006-01-05 Robinson Shane P Switched constant current driving and control circuit

Also Published As

Publication number Publication date
DE102007001716B4 (en) 2015-11-05
EP1945006A2 (en) 2008-07-16
DE102007001716A1 (en) 2008-07-17
EP1945006B1 (en) 2015-02-25

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