EP2783157B1 - Light-emitting assembly, led retrofit lamp and assembling method thereof - Google Patents

Light-emitting assembly, led retrofit lamp and assembling method thereof Download PDF

Info

Publication number
EP2783157B1
EP2783157B1 EP12743115.3A EP12743115A EP2783157B1 EP 2783157 B1 EP2783157 B1 EP 2783157B1 EP 12743115 A EP12743115 A EP 12743115A EP 2783157 B1 EP2783157 B1 EP 2783157B1
Authority
EP
European Patent Office
Prior art keywords
light
housing
heat sink
section
emitting assembly
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.)
Not-in-force
Application number
EP12743115.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2783157A1 (en
Inventor
Haiquan CHEN
You CHEN
Yangang Cheng
Huanghui LU
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.)
Osram GmbH
Original Assignee
Osram GmbH
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 Osram GmbH filed Critical Osram GmbH
Publication of EP2783157A1 publication Critical patent/EP2783157A1/en
Application granted granted Critical
Publication of EP2783157B1 publication Critical patent/EP2783157B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • 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
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/507—Cooling arrangements characterised by the adaptation for cooling of specific components of means for protecting lighting devices from damage, e.g. housings
    • 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
    • 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
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • 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]

Definitions

  • the traditional MR-16 LED retrofit lamp has problems in two aspects.
  • an outer profile and size of a heat sink of the traditional MR-16 LED retrofit lamp are restricted by a relatively small lamp fixture because, when the traditional halogen light source is replaced by an LED light source, the LED light source must be assured to be capable of being assembled into the lamp fixture of the replaced MR-16 halogen lamp, and meanwhile, the heat sink in coordination with the LED light source also should be assured to be capable of passing through the lamp fixture.
  • the heat sink can be installed individually after the housing of the light-emitting assembly is installed in a position where it is to be installed, it is unnecessary to consider the size of the position where the housing of the light-emitting assembly is to be installed when the heat sink is designed, which can prominently improve the heat dissipation performance of the whole light-emitting assembly. Moreover, there is no need to provide a new installation fixture dedicated to the light-emitting assembly for adaptation to the heat sink, thus the cost is reduced. Besides, the light-emitting assembly of the present application has a simpler structure and is more easily assembled.
  • the housing has a conic section that has the outer surface against which the heat sink is pressed, and the heat sink has an accommodation cavity for accommodating the conic section.
  • This structure assures a contact area as big as is possible between the heat sink and the housing so as to improve the heat transfer efficiency.
  • the holding assembly further comprises a stop nut 6 accommodated in the via 3a and screwed into threads on the cylindrical rod section 4a so as to be pressed against an end surface of the housing 1 defining the holding rod assembling cavity 1a.
  • the LED retrofit lamp of the present invention When the LED retrofit lamp of the present invention is used as a downlight, firstly, a housing 1 with a light source 2 is installed into a lamp fixture 7 below a ceiling; then, a heat sink 3 is installed into the lamp fixture 7 above the ceiling to press the same against an outer surface 1c of the housing 1, meanwhile, a holding rod 4 partially extending from the housing 1 is enabled to pass through a via 3a of the heat sink 3; thereafter, the holding rod 4 is pulled in a direction away from the housing 1 so that a second stop end 4c of the holding rod 4 protrudes from the via 3a; and finally, the second stop end 4c is rotated to press the heat sink 3 against the outer surface 1c, thus the assembling process is completed.
EP12743115.3A 2011-11-25 2012-07-23 Light-emitting assembly, led retrofit lamp and assembling method thereof Not-in-force EP2783157B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110382617.0A CN103133891B (zh) 2011-11-25 2011-11-25 发光组件，led改型灯及其装配方法
PCT/EP2012/064402 WO2013075853A1 (en) 2011-11-25 2012-07-23 Light-emitting assembly, led retrofit lamp and assembling method thereof

Publications (2)

Publication Number Publication Date
EP2783157A1 EP2783157A1 (en) 2014-10-01
EP2783157B1 true EP2783157B1 (en) 2016-02-03

Family

ID=46604287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12743115.3A Not-in-force EP2783157B1 (en) 2011-11-25 2012-07-23 Light-emitting assembly, led retrofit lamp and assembling method thereof

Country Status (3)

Country Link
EP (1) EP2783157B1 (zh)
CN (1) CN103133891B (zh)
WO (1) WO2013075853A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3557120A1 (en) * 2015-04-13 2019-10-23 Buzzi & Buzzi S.r.l. Lighting device
FR3056283B1 (fr) * 2016-09-21 2021-05-14 Valeo Vision Dispositif lumineux comportant une source lumineuse surfacique
AU2016238880B2 (en) * 2016-10-05 2022-09-15 Legrand Australia Pty Ltd Downlight
GB2579257B (en) * 2019-04-15 2020-12-09 Ecoled Ltd Lighting apparatus housing

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6585395B2 (en) * 2001-03-22 2003-07-01 Altman Stage Lighting Co., Inc. Variable beam light emitting diode light source system
US6974233B1 (en) * 2003-05-29 2005-12-13 Truman Aubrey Fluorescent lighting fixture assemblies
CN2740880Y (zh) * 2004-07-22 2005-11-16 杭州富阳新颖电子有限公司 以大功率发光二极管为光源的照明灯
US7985005B2 (en) * 2006-05-30 2011-07-26 Journée Lighting, Inc. Lighting assembly and light module for same
US20100039829A1 (en) * 2008-08-12 2010-02-18 Ge Investment Co., Ltd. Light-emitting diode lamp
CN101373063A (zh) * 2008-09-05 2009-02-25 汕尾市大利荣耀灯饰工业有限公司 一种长寿节能led射灯的散热装置
US20100309671A1 (en) * 2009-06-09 2010-12-09 Meyer Iv George Anthony Led lamp heat dissipating module
US8845146B2 (en) * 2009-06-17 2014-09-30 Koninklijke Philips N.V. Connector for connecting a component to a heat sink
US20110110095A1 (en) * 2009-10-09 2011-05-12 Intematix Corporation Solid-state lamps with passive cooling
CN201636758U (zh) * 2009-11-27 2010-11-17 林英志 水晶led灯
CN201973477U (zh) * 2010-09-30 2011-09-14 许法卿 可调角度led帕灯

Also Published As

Publication number Publication date
WO2013075853A1 (en) 2013-05-30
EP2783157A1 (en) 2014-10-01
CN103133891A (zh) 2013-06-05
CN103133891B (zh) 2016-11-23

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