EP1035754A3 - Signalling device with a light emitting diode - Google Patents

Signalling device with a light emitting diode Download PDF

Info

Publication number
EP1035754A3
EP1035754A3 EP00104197A EP00104197A EP1035754A3 EP 1035754 A3 EP1035754 A3 EP 1035754A3 EP 00104197 A EP00104197 A EP 00104197A EP 00104197 A EP00104197 A EP 00104197A EP 1035754 A3 EP1035754 A3 EP 1035754A3
Authority
EP
European Patent Office
Prior art keywords
light emitting
emitting diode
signalling device
operating current
control unit
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
EP00104197A
Other languages
German (de)
French (fr)
Other versions
EP1035754B1 (en
EP1035754A2 (en
Inventor
Jürgen Dipl.-Ing.(FH) Adams
Werner Ing. Grad. Baldenhofer
Michael Dipl.-Ing.(FH) Krieg
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.)
Continental Automotive GmbH
Original Assignee
Mannesmann VDO AG
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 Mannesmann VDO AG filed Critical Mannesmann VDO AG
Publication of EP1035754A2 publication Critical patent/EP1035754A2/en
Publication of EP1035754A3 publication Critical patent/EP1035754A3/en
Application granted granted Critical
Publication of EP1035754B1 publication Critical patent/EP1035754B1/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]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
    • 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

Abstract

The device has a light emitting diode and a control unit that controls its operating current. The control unit repeatedly and temporarily raises the light emitting diode's operating current (IN) above the usual level of the operating current in order to increase the signaling effect of the warning.
EP00104197A 1999-03-06 2000-03-01 Signalling device with a light emitting diode Expired - Lifetime EP1035754B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19909950 1999-03-06
DE19909950A DE19909950A1 (en) 1999-03-06 1999-03-06 Device for displaying a message with a light emitting diode

Publications (3)

Publication Number Publication Date
EP1035754A2 EP1035754A2 (en) 2000-09-13
EP1035754A3 true EP1035754A3 (en) 2001-12-05
EP1035754B1 EP1035754B1 (en) 2008-08-13

Family

ID=7899976

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00104197A Expired - Lifetime EP1035754B1 (en) 1999-03-06 2000-03-01 Signalling device with a light emitting diode

Country Status (3)

Country Link
EP (1) EP1035754B1 (en)
AT (1) ATE405135T1 (en)
DE (2) DE19909950A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6495964B1 (en) * 1998-12-18 2002-12-17 Koninklijke Philips Electronics N.V. LED luminaire with electrically adjusted color balance using photodetector
DE102004060483B4 (en) * 2004-12-16 2018-06-07 HELLA GmbH & Co. KGaA Method for operating a light flash warning device with at least one light emitting diode
FR2889643A1 (en) * 2005-08-08 2007-02-09 Valeo Systemes Thermiques Control board`s light intensity adjusting device for motor vehicle, has light sources supplied with supply currents from control interfaces, and control correctors modulating current in light sources according to required luminance
FR2998035A1 (en) * 2013-05-07 2014-05-16 Continental Automotive France Lighting device for low definition display of car, has control circuit, where secondary impulse is received during interval of time having duration during which heat produced by on-impulse and by secondary impulse are evacuated by device
DE102015116492A1 (en) 2015-09-29 2017-03-30 Eaton Electrical Ip Gmbh & Co. Kg Control circuit for driving a plurality of light-emitting diodes and command and / or signaling device with the control circuit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2711884A1 (en) * 1993-10-29 1995-05-05 Solartec Sarl Signalling device, in particular for road, aeronautical or maritime signalling
FR2714564A1 (en) * 1993-12-28 1995-06-30 Etat Francais Labo Cl Ponts Ch Control process for light emitting beacon for maritime use providing coded light flash sequence
US5783909A (en) * 1997-01-10 1998-07-21 Relume Corporation Maintaining LED luminous intensity
US5850126A (en) * 1997-04-11 1998-12-15 Kanbar; Maurice S. Screw-in led lamp
EP0890894A1 (en) * 1997-07-08 1999-01-13 Korry Electronics Co. Incandescent bulb luminance matching led circuit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2711884A1 (en) * 1993-10-29 1995-05-05 Solartec Sarl Signalling device, in particular for road, aeronautical or maritime signalling
FR2714564A1 (en) * 1993-12-28 1995-06-30 Etat Francais Labo Cl Ponts Ch Control process for light emitting beacon for maritime use providing coded light flash sequence
US5783909A (en) * 1997-01-10 1998-07-21 Relume Corporation Maintaining LED luminous intensity
US5850126A (en) * 1997-04-11 1998-12-15 Kanbar; Maurice S. Screw-in led lamp
EP0890894A1 (en) * 1997-07-08 1999-01-13 Korry Electronics Co. Incandescent bulb luminance matching led circuit

Also Published As

Publication number Publication date
ATE405135T1 (en) 2008-08-15
DE19909950A1 (en) 2000-09-07
EP1035754B1 (en) 2008-08-13
DE50015302D1 (en) 2008-09-25
EP1035754A2 (en) 2000-09-13

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