WO2013086694A1 - Technologie de conduit de guide à émission latérale sur lampe à del pour former un effet de filament - Google Patents

Technologie de conduit de guide à émission latérale sur lampe à del pour former un effet de filament Download PDF

Info

Publication number
WO2013086694A1
WO2013086694A1 PCT/CN2011/083943 CN2011083943W WO2013086694A1 WO 2013086694 A1 WO2013086694 A1 WO 2013086694A1 CN 2011083943 W CN2011083943 W CN 2011083943W WO 2013086694 A1 WO2013086694 A1 WO 2013086694A1
Authority
WO
WIPO (PCT)
Prior art keywords
leg
light
lamp
light guide
light emitting
Prior art date
Application number
PCT/CN2011/083943
Other languages
English (en)
Inventor
Honglei GAO
Zhiyong Wang
Yun SHANG
Chenjie Xu
Shuang NIU
Original Assignee
GE Lighting Solutions, LLC
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 GE Lighting Solutions, LLC filed Critical GE Lighting Solutions, LLC
Priority to EP11877255.7A priority Critical patent/EP2791573A4/fr
Priority to KR1020147015899A priority patent/KR20140097346A/ko
Priority to PCT/CN2011/083943 priority patent/WO2013086694A1/fr
Priority to CN201180075479.XA priority patent/CN103975189A/zh
Publication of WO2013086694A1 publication Critical patent/WO2013086694A1/fr

Links

Classifications

    • 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
    • F21K2/00—Non-electric light sources using luminescence; Light sources using electrochemiluminescence
    • 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
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
    • 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
    • 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
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
    • F21V3/08—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material comprising photoluminescent substances
    • 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
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
    • 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

  • Solid-state lighting technology including light emitting diodes (LEDs)
  • LEDs light emitting diodes
  • a lamp is provided.
  • the lamp includes at least two light emitting diodes in thermal communication with a heat sink.
  • a translucent envelope receiving light emitted from the light emitting diodes is also provided.
  • a light guide is located to receive light emitted from at least one of the light emitting diodes.
  • the light guide includes a first leg extending away from the heat sink toward an interior of the envelope and a light emitting second leg angled relative to the first leg.
  • the second leg can be at least substantially perpendicular to a longitudinal axis of the lamp.
  • a lamp including a transparent envelope at least substantially surrounding a light guide includes a first leg with a first end in light receiving relationship with a light emitting diode.
  • the light guide includes a second leg angled relative to the first leg and oriented at least substantially perpendicular to the longitudinal axis of the lamp.
  • the second leg further includes elements causing light to be emitted therefrom.
  • FIGURE 1 is a side view partially in cross-section of a representative lamp embodiment
  • FIGURE 2 is a top view, partially in cross-section of the lamp of Figure 1.
  • a lamp assembly 10 includes a first pair of light emitting diodes (LEDs) 12 disposed within an envelope 14.
  • the envelope 14 may be formed from a dielectric material such as a polymer or glass. It is envisioned that envelope 14 can be transparent or translucent. The transparent form may be selected when a traditional candelabra style lamp is desired. Translucent may be selected when a light diffusing coating is included on the envelope to create a more lambertian style of light distribution.
  • the LEDs 12 emit light into a light guide 16.
  • the light guide can be a cylindrical structure through which light is channeled or transmitted by total internal reflection. Total internal reflection prevents the light from passing from inside the light guide to outside of the light guide. Total internal reflection occurs when light impinges on an interface between the light guide and the atmosphere surrounding the light guide at an angle that is greater than a critical angle.
  • the critical angle is a function of the indices of refraction for the medium of the light guide and the medium of the surrounding atmosphere.
  • the light guide 16 can be formed from an optically clear material such as glass, polycarbonate, acrylic or other suitable plastic.
  • the light guide includes an attachment end 18 having a terminal wall defining a cavity 19 enclosing the LEDs 12 to capture substantially all the light generated by the LEDs.
  • the attachment end 18 mates with the printed circuit board 20 upon which the LEDs 12 are mounted.
  • the printed circuit board provides electrical connection to the LEDs and can be a metal core printed circuit board (MCPCB) to provide heat sinking.
  • MCPCB metal core printed circuit board
  • heat sinking can include just the MCPCB or other typical heat spreading devices, such as heat dissipating fins in thermal communication with the MCPCB.
  • a transparent epoxy 21 can fill the cavity 19 and secure the attachment end 18 of the light pipe 16 to the LEDs 12 and the circuit board 20 and orient the light guide 16 to receive light emitted by the light emitting diodes 12.
  • the light is transmitted through the light guide 16 via total internal reflectance from the attachment end 18 to a remote end 24.
  • Light guide 16 can be a one piece injection molded component. To generate visible light from the light guide, it is possible to associate a phosphor or other wavelength converting material with LEDs 12. Alternatively, it is feasible to associate the wavelength converting material with light pipe 16. It may be desirable that light pipe emitted light have a color temperature CCT in the range of about 2700K to 10, ⁇ .
  • Remote end 24 of guide 16 can include an internal or external reflecting strip or other surface element that reflects light impinging on the surface element. At least some of the reflected light strikes the interface between the outside surface of the light guide and the surrounding atmosphere at an angle that is less than the critical angle of the light guide-atmosphere interface, allowing light to escape from the light guide as emitted light.
  • a band or pattern 26 of individual reflective surface elements 28 can be provided on the remote end 24 of light guide 16.
  • the surface elements 28 may be separated from one another.
  • the surface elements 28 may be printed or otherwise adhered to an outer surface 30 of the light guide 16.
  • the surface elements 28 may be formed on the inside of the light guide 16.
  • the surface elements 28 reflect the light that impinges on the surface elements 28. For example, at least some of the light that is transmitted through the light guide 16 strikes the surface elements 28 and is reflected or scattered by the surface elements 28. At least a portion of light reflected by surface elements may exit the light guide 16 as emitted light 32.
  • the emitted light 32 may emanate from the light guide 16 in a direction transverse to the lamps longitudinal axis 34. Of course, the emitted light 32 may emanate from the light guide 16 in a variety of directions.
  • the pattern 26 of the surface elements 28 may be provided along the length of the light guide remote end 24 in one or more of a shape and distribution in order to provide a desired distribution of the light 32 emanating from the light guide 16.
  • the emitted light 32 may have a distribution defined by a length and a projection angle.
  • the length represents the distance along the remote end of light guide 16 in a direction parallel to the transverse axis 38 that the light 32 emanates from the light guide 16 in directions transverse to the longitudinal axis.
  • the projection angle is the radial distance that the light extends over the surface of the light guide 16. In a representative embodiment, the distribution angle extends from about 30° to about 330° (with 0° facing the printed circuit board) to provide the light pattern typically associated with an incandescent filament.
  • the surface elements 28 may include light transmissive elements having an index of refraction that differs from the index of refraction of the light guide 16.
  • the interfaces between the surface elements 28 and the light guide 16 may alter the critical angle required for total internal reflection.
  • the surface elements 28 may have an index of refraction that increases the critical angle at the interface between the light guide 16 and the surface elements 28. Increasing the critical angle may reduce the amount of light that is internally reflected in the light guide 16 and may increase the amount of light that emanates from the light guide 16.
  • the light that is refracted by the surface elements 28 may emanate from the light guide 16 through the surface elements 28. For example, the emanating refracted light may exit the light guide 16 proximate the same side of the light guide 16 on which the surface elements 28 are disposed.
  • the amount of emanated light 32 may be controlled along the longitudinal axis 38.
  • the light 32 may emanate from the light guide 16 such that no appreciable gradient in the intensity of the emitted light 32 exists or it may be tailored to increase in intensity as the transverse axis 38 as it approaches the longitudinal axis 34.
  • Lamp assembly 10 further includes a pair of auxiliary LEDs 40 disposed on printed circuit board 20.
  • LEDs 40 emit light which directly radiates upon envelope 14.
  • LEDs 40 can emit at a first radiation to excite a phosphor material 42 (or other light converting material) associated with envelope 14 for conversion into a desired visible spectrum (e.g. white).
  • the phosphor material can be directly associated with the LEDs 40, such as coated directly thereon.
  • multiple colored LED devices should could be utilized wherein the radiated light of each is blended to obtain a desired spectral output (e.g. R-G-B blend to produce white light).
  • the lamp is not limited to any particular number of auxiliary LEDs or light guide illuminating LEDs.
  • An electronics package (not shown) can be disposed within connector base 44.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

La présente invention concerne une lampe (10) comprenant au moins deux diodes électroluminescentes (12, 40) en communication thermique avec un dissipateur de chaleur. Une enveloppe translucide (14) recevant la lumière émise par les diodes électroluminescentes (12, 40) est également décrite. Un guide de lumière (16) est situé pour recevoir la lumière émise par au moins une des diodes électroluminescentes (12). Le guide de lumière (16) comprend une première jambe s'étendant depuis le dissipateur de chaleur vers l'intérieur de l'enveloppe (14) et une seconde jambe électroluminescente inclinée par rapport à la première jambe. La seconde jambe peut être au moins sensiblement perpendiculaire à un axe longitudinal de la lampe (10).
PCT/CN2011/083943 2011-12-14 2011-12-14 Technologie de conduit de guide à émission latérale sur lampe à del pour former un effet de filament WO2013086694A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP11877255.7A EP2791573A4 (fr) 2011-12-14 2011-12-14 Technologie de conduit de guide à émission latérale sur lampe à del pour former un effet de filament
KR1020147015899A KR20140097346A (ko) 2011-12-14 2011-12-14 필라멘트 효과를 생성하기 위한 led 램프 상의 측면 발광 가이드파이프 기술
PCT/CN2011/083943 WO2013086694A1 (fr) 2011-12-14 2011-12-14 Technologie de conduit de guide à émission latérale sur lampe à del pour former un effet de filament
CN201180075479.XA CN103975189A (zh) 2011-12-14 2011-12-14 Led灯上制造灯丝效果的侧发光导管技术

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/083943 WO2013086694A1 (fr) 2011-12-14 2011-12-14 Technologie de conduit de guide à émission latérale sur lampe à del pour former un effet de filament

Publications (1)

Publication Number Publication Date
WO2013086694A1 true WO2013086694A1 (fr) 2013-06-20

Family

ID=48611806

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/083943 WO2013086694A1 (fr) 2011-12-14 2011-12-14 Technologie de conduit de guide à émission latérale sur lampe à del pour former un effet de filament

Country Status (4)

Country Link
EP (1) EP2791573A4 (fr)
KR (1) KR20140097346A (fr)
CN (1) CN103975189A (fr)
WO (1) WO2013086694A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015124469A1 (fr) * 2014-02-24 2015-08-27 Koninklijke Philips N.V. Ensemble lampe
WO2016148924A1 (fr) * 2015-03-13 2016-09-22 Cree, Inc. Lampe à semi-conducteurs à optique de distribution angulaire
GB2539190A (en) * 2015-06-05 2016-12-14 Graphene Lighting Plc LED light bulb simultaneously using as nightlight
US9909723B2 (en) 2015-07-30 2018-03-06 Cree, Inc. Small form-factor LED lamp with color-controlled dimming
US10172215B2 (en) 2015-03-13 2019-01-01 Cree, Inc. LED lamp with refracting optic element
EP3561367A1 (fr) * 2018-04-23 2019-10-30 Xiamen Eco Lighting Co., Ltd. Appareil de lumière avec motif éclairé

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Publication number Priority date Publication date Assignee Title
US9500355B2 (en) * 2012-05-04 2016-11-22 GE Lighting Solutions, LLC Lamp with light emitting elements surrounding active cooling device
CN104456223B (zh) * 2014-12-12 2016-08-24 欧普照明股份有限公司 一种照明装置和灯具
CN104482437B (zh) * 2014-12-12 2016-08-24 欧普照明股份有限公司 一种照明装置
US11015765B2 (en) * 2017-05-02 2021-05-25 Signify Holding B.V. Lighting device and a luminaire

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US20050152141A1 (en) * 2004-01-13 2005-07-14 Nobuyuki Suzuki LED lamp with light guide
CN1712769A (zh) * 2004-06-16 2005-12-28 奥斯兰姆施尔凡尼亚公司 具有光管的发光二极管灯
CN201326924Y (zh) * 2008-11-27 2009-10-14 佑浩股份有限公司 灯泡结构
CN201892080U (zh) * 2010-10-30 2011-07-06 潘家红 带导光柱的led灯泡
CN201992379U (zh) * 2010-12-10 2011-09-28 林学进 一种照明装置
CN202203686U (zh) * 2011-04-08 2012-04-25 浙江雄邦节能产品有限公司 一种具有导光管的led灯泡

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CN101956918A (zh) * 2010-09-21 2011-01-26 深圳安嵘光电产品有限公司 一种led导光板灯泡及其制作方法
EP4235016A3 (fr) * 2010-12-22 2023-10-25 Signify Holding B.V. Dispositif d'éclairage et procédé de production d'un dispositif d'éclairage
JP5738708B2 (ja) * 2011-07-29 2015-06-24 三菱電機照明株式会社 照明装置

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Publication number Priority date Publication date Assignee Title
US20050152141A1 (en) * 2004-01-13 2005-07-14 Nobuyuki Suzuki LED lamp with light guide
CN1712769A (zh) * 2004-06-16 2005-12-28 奥斯兰姆施尔凡尼亚公司 具有光管的发光二极管灯
CN201326924Y (zh) * 2008-11-27 2009-10-14 佑浩股份有限公司 灯泡结构
CN201892080U (zh) * 2010-10-30 2011-07-06 潘家红 带导光柱的led灯泡
CN201992379U (zh) * 2010-12-10 2011-09-28 林学进 一种照明装置
CN202203686U (zh) * 2011-04-08 2012-04-25 浙江雄邦节能产品有限公司 一种具有导光管的led灯泡

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015124469A1 (fr) * 2014-02-24 2015-08-27 Koninklijke Philips N.V. Ensemble lampe
CN106062479A (zh) * 2014-02-24 2016-10-26 飞利浦照明控股有限公司 灯组件
WO2016148924A1 (fr) * 2015-03-13 2016-09-22 Cree, Inc. Lampe à semi-conducteurs à optique de distribution angulaire
US9702512B2 (en) 2015-03-13 2017-07-11 Cree, Inc. Solid-state lamp with angular distribution optic
US10172215B2 (en) 2015-03-13 2019-01-01 Cree, Inc. LED lamp with refracting optic element
GB2539190A (en) * 2015-06-05 2016-12-14 Graphene Lighting Plc LED light bulb simultaneously using as nightlight
GB2539190B (en) * 2015-06-05 2021-02-03 Graphene Lighting Plc An LED light bulb
US9909723B2 (en) 2015-07-30 2018-03-06 Cree, Inc. Small form-factor LED lamp with color-controlled dimming
EP3561367A1 (fr) * 2018-04-23 2019-10-30 Xiamen Eco Lighting Co., Ltd. Appareil de lumière avec motif éclairé

Also Published As

Publication number Publication date
CN103975189A (zh) 2014-08-06
KR20140097346A (ko) 2014-08-06
EP2791573A1 (fr) 2014-10-22
EP2791573A4 (fr) 2015-07-29

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