FR2922077B1 - Lampe electrique portative a diodes electroluminescentes, protegees en temperature par une resistance a coefficient thermique variable - Google Patents

Lampe electrique portative a diodes electroluminescentes, protegees en temperature par une resistance a coefficient thermique variable

Info

Publication number
FR2922077B1
FR2922077B1 FR0707082A FR0707082A FR2922077B1 FR 2922077 B1 FR2922077 B1 FR 2922077B1 FR 0707082 A FR0707082 A FR 0707082A FR 0707082 A FR0707082 A FR 0707082A FR 2922077 B1 FR2922077 B1 FR 2922077B1
Authority
FR
France
Prior art keywords
thermal coefficient
electroluminescent diode
variable thermal
electrical lamp
coefficient resistance
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.)
Expired - Fee Related
Application number
FR0707082A
Other languages
English (en)
Other versions
FR2922077A1 (fr
Inventor
Frederic Piu
Paul Petzl
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.)
Zedel SAS
Original Assignee
Zedel SAS
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 Zedel SAS filed Critical Zedel SAS
Priority to FR0707082A priority Critical patent/FR2922077B1/fr
Publication of FR2922077A1 publication Critical patent/FR2922077A1/fr
Application granted granted Critical
Publication of FR2922077B1 publication Critical patent/FR2922077B1/fr
Expired - Fee Related 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]
    • H05B45/50—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
FR0707082A 2007-10-09 2007-10-09 Lampe electrique portative a diodes electroluminescentes, protegees en temperature par une resistance a coefficient thermique variable Expired - Fee Related FR2922077B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0707082A FR2922077B1 (fr) 2007-10-09 2007-10-09 Lampe electrique portative a diodes electroluminescentes, protegees en temperature par une resistance a coefficient thermique variable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0707082A FR2922077B1 (fr) 2007-10-09 2007-10-09 Lampe electrique portative a diodes electroluminescentes, protegees en temperature par une resistance a coefficient thermique variable

Publications (2)

Publication Number Publication Date
FR2922077A1 FR2922077A1 (fr) 2009-04-10
FR2922077B1 true FR2922077B1 (fr) 2011-04-01

Family

ID=39473585

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0707082A Expired - Fee Related FR2922077B1 (fr) 2007-10-09 2007-10-09 Lampe electrique portative a diodes electroluminescentes, protegees en temperature par une resistance a coefficient thermique variable

Country Status (1)

Country Link
FR (1) FR2922077B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009003632B4 (de) * 2009-03-17 2013-05-16 Lear Corporation Gmbh Verfahren und Schaltungsanordnung zur Ansteuerung einer Last
DE102011055594A1 (de) * 2011-11-22 2013-05-23 Hella Kgaa Hueck & Co. Leuchte, insbesondere LED-Scheinwerfer, für ein Kraftfahrzeug. Steuergerät für die Leuchte und Anordnung aus der Leuchte und dem Steuergerät

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3449898B2 (ja) * 1997-10-16 2003-09-22 富士通株式会社 発光素子駆動回路
JP2004330819A (ja) * 2003-05-01 2004-11-25 Koito Mfg Co Ltd 車両用灯具

Also Published As

Publication number Publication date
FR2922077A1 (fr) 2009-04-10

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20130628