WO2013086694A1 - Side-emitting guidepipe technology on led lamp to make filament effect - Google Patents
Side-emitting guidepipe technology on led lamp to make filament effect Download PDFInfo
- 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
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
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201180075479.XA CN103975189A (en) | 2011-12-14 | 2011-12-14 | Side-emitting guidepipe technology on led lamp to make filament effect |
KR1020147015899A KR20140097346A (en) | 2011-12-14 | 2011-12-14 | Side-emitting guidepipe technology on led lamp to make filament effect |
PCT/CN2011/083943 WO2013086694A1 (en) | 2011-12-14 | 2011-12-14 | Side-emitting guidepipe technology on led lamp to make filament effect |
EP11877255.7A EP2791573A4 (en) | 2011-12-14 | 2011-12-14 | Side-emitting guidepipe technology on led lamp to make filament effect |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2011/083943 WO2013086694A1 (en) | 2011-12-14 | 2011-12-14 | Side-emitting guidepipe technology on led lamp to make filament effect |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013086694A1 true WO2013086694A1 (en) | 2013-06-20 |
Family
ID=48611806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2011/083943 WO2013086694A1 (en) | 2011-12-14 | 2011-12-14 | Side-emitting guidepipe technology on led lamp to make filament effect |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2791573A4 (en) |
KR (1) | KR20140097346A (en) |
CN (1) | CN103975189A (en) |
WO (1) | WO2013086694A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015124469A1 (en) * | 2014-02-24 | 2015-08-27 | Koninklijke Philips N.V. | Lamp assembly |
WO2016148924A1 (en) * | 2015-03-13 | 2016-09-22 | Cree, Inc. | Solid-state lamp with angular distribution optic |
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 (en) * | 2018-04-23 | 2019-10-30 | Xiamen Eco Lighting Co., Ltd. | Light apparatus with enlightened pattern |
Families Citing this family (4)
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 |
CN104482437B (en) * | 2014-12-12 | 2016-08-24 | 欧普照明股份有限公司 | A kind of illuminator |
CN104456223B (en) * | 2014-12-12 | 2016-08-24 | 欧普照明股份有限公司 | A kind of illuminator and light fixture |
CN110573791B (en) * | 2017-05-02 | 2022-03-04 | 昕诺飞控股有限公司 | Lighting device and lamp |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US20050152141A1 (en) * | 2004-01-13 | 2005-07-14 | Nobuyuki Suzuki | LED lamp with light guide |
CN1712769A (en) * | 2004-06-16 | 2005-12-28 | 奥斯兰姆施尔凡尼亚公司 | Light emitting diode lamp with light pipes |
CN201326924Y (en) * | 2008-11-27 | 2009-10-14 | 佑浩股份有限公司 | Bulb structure |
CN201892080U (en) * | 2010-10-30 | 2011-07-06 | 潘家红 | Light-emitting diode (LED) lamp bulb with light guide pillar |
CN201992379U (en) * | 2010-12-10 | 2011-09-28 | 林学进 | Lighting device |
CN202203686U (en) * | 2011-04-08 | 2012-04-25 | 浙江雄邦节能产品有限公司 | Light-emitting diode (LED) lamp bulb with light pipes |
Family Cites Families (10)
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EP1627178B1 (en) * | 2003-05-05 | 2018-11-07 | GE Lighting Solutions, LLC | Led-based light bulb |
JP2004342411A (en) * | 2003-05-14 | 2004-12-02 | Sharp Corp | Illuminating device and illuminating system including the same |
CN100520152C (en) * | 2004-09-29 | 2009-07-29 | 皇家飞利浦电子股份有限公司 | Lighting device |
US7600897B2 (en) * | 2007-09-05 | 2009-10-13 | Hua-Hsin Tsai | Light emitting unit having light source inside a lamp tube with ceramic fins |
US8506103B2 (en) * | 2008-11-26 | 2013-08-13 | Keiji Iimura | Semiconductor lamp and light bulb type LED lamp |
US7976206B2 (en) * | 2008-12-17 | 2011-07-12 | U-How Co., Ltd. | Structure of light bulb |
CN101922671B (en) * | 2010-04-30 | 2012-09-05 | 苏州京东方茶谷电子有限公司 | Adjustable-light allochroic bulb |
CN101956918A (en) * | 2010-09-21 | 2011-01-26 | 深圳安嵘光电产品有限公司 | LE D light guide plate bulb and manufacturing method thereof |
EP4235016A3 (en) * | 2010-12-22 | 2023-10-25 | Signify Holding B.V. | Lighting device and method for manufacturing a lighting device |
JP5738708B2 (en) * | 2011-07-29 | 2015-06-24 | 三菱電機照明株式会社 | Lighting device |
-
2011
- 2011-12-14 WO PCT/CN2011/083943 patent/WO2013086694A1/en active Application Filing
- 2011-12-14 CN CN201180075479.XA patent/CN103975189A/en active Pending
- 2011-12-14 EP EP11877255.7A patent/EP2791573A4/en not_active Withdrawn
- 2011-12-14 KR KR1020147015899A patent/KR20140097346A/en not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050152141A1 (en) * | 2004-01-13 | 2005-07-14 | Nobuyuki Suzuki | LED lamp with light guide |
CN1712769A (en) * | 2004-06-16 | 2005-12-28 | 奥斯兰姆施尔凡尼亚公司 | Light emitting diode lamp with light pipes |
CN201326924Y (en) * | 2008-11-27 | 2009-10-14 | 佑浩股份有限公司 | Bulb structure |
CN201892080U (en) * | 2010-10-30 | 2011-07-06 | 潘家红 | Light-emitting diode (LED) lamp bulb with light guide pillar |
CN201992379U (en) * | 2010-12-10 | 2011-09-28 | 林学进 | Lighting device |
CN202203686U (en) * | 2011-04-08 | 2012-04-25 | 浙江雄邦节能产品有限公司 | Light-emitting diode (LED) lamp bulb with light pipes |
Non-Patent Citations (1)
Title |
---|
See also references of EP2791573A4 * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015124469A1 (en) * | 2014-02-24 | 2015-08-27 | Koninklijke Philips N.V. | Lamp assembly |
CN106062479A (en) * | 2014-02-24 | 2016-10-26 | 飞利浦照明控股有限公司 | Lamp assembly |
WO2016148924A1 (en) * | 2015-03-13 | 2016-09-22 | Cree, Inc. | Solid-state lamp with angular distribution optic |
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 (en) * | 2018-04-23 | 2019-10-30 | Xiamen Eco Lighting Co., Ltd. | Light apparatus with enlightened pattern |
Also Published As
Publication number | Publication date |
---|---|
EP2791573A1 (en) | 2014-10-22 |
CN103975189A (en) | 2014-08-06 |
KR20140097346A (en) | 2014-08-06 |
EP2791573A4 (en) | 2015-07-29 |
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