EP2150093A3 - LED lamp and method for operating the same - Google Patents

LED lamp and method for operating the same Download PDF

Info

Publication number
EP2150093A3
EP2150093A3 EP09009400A EP09009400A EP2150093A3 EP 2150093 A3 EP2150093 A3 EP 2150093A3 EP 09009400 A EP09009400 A EP 09009400A EP 09009400 A EP09009400 A EP 09009400A EP 2150093 A3 EP2150093 A3 EP 2150093A3
Authority
EP
European Patent Office
Prior art keywords
operating
same
led lamp
lamp
led
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.)
Withdrawn
Application number
EP09009400A
Other languages
German (de)
French (fr)
Other versions
EP2150093A2 (en
Inventor
Piero Magnaghi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP09009400A priority Critical patent/EP2150093A3/en
Publication of EP2150093A2 publication Critical patent/EP2150093A2/en
Publication of EP2150093A3 publication Critical patent/EP2150093A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V25/00—Safety devices structurally associated with lighting devices
    • 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]
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

There is described a light lamp which can be supplied at mains voltage and a method for its operation, wherein the lamp includes at least one LED and at least one PTC thermistor connected in series to the supply line of the LED. The dissipation of heat generated into the lamp is provided to keep the PTC thermistor at a predetermined substantially constant operating temperature.
EP09009400A 2008-07-30 2009-07-20 LED lamp and method for operating the same Withdrawn EP2150093A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09009400A EP2150093A3 (en) 2008-07-30 2009-07-20 LED lamp and method for operating the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08425529 2008-07-30
EP09009400A EP2150093A3 (en) 2008-07-30 2009-07-20 LED lamp and method for operating the same

Publications (2)

Publication Number Publication Date
EP2150093A2 EP2150093A2 (en) 2010-02-03
EP2150093A3 true EP2150093A3 (en) 2012-04-18

Family

ID=39865554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09009400A Withdrawn EP2150093A3 (en) 2008-07-30 2009-07-20 LED lamp and method for operating the same

Country Status (1)

Country Link
EP (1) EP2150093A3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011114253A1 (en) * 2011-09-26 2013-03-28 e:lumix OptoSemi Industries Verwaltungs GmbH Lighting device e.g. street light comprises resistive element with positive temperature characteristic that is electrically connected with semiconductor element in series through thermal coupling and electrical connection
DE102012003944A1 (en) * 2012-02-28 2013-08-29 Peter Frieden Wheel dynamo for sports and racing bikes
CN103162259A (en) * 2013-03-01 2013-06-19 河南华阳光电照明技术有限公司 Method of passing safety regulation high voltage test for light-emitting diode (LED) lamp and highly voltage-resistant LED lamp
CN104244501B (en) * 2013-06-14 2016-10-12 海洋王（东莞）照明科技有限公司 A kind of light fixture with active heat radiating device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070139928A1 (en) * 2005-12-17 2007-06-21 Polytronics Technology Corp. LED apparatus with temperature control function

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19728763B4 (en) 1997-07-07 2007-10-31 Reitter & Schefenacker Gmbh & Co. Kg Circuit device for protecting current-driven light sources, in particular LEDs, for signaling or lighting purposes
ITRE20030098A1 (en) 2003-10-16 2005-04-17 Immobiliare Eder Srl PILOT DRIVER DIODES LIGHT EMITTERS

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070139928A1 (en) * 2005-12-17 2007-06-21 Polytronics Technology Corp. LED apparatus with temperature control function

Also Published As

Publication number Publication date
EP2150093A2 (en) 2010-02-03

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