CN103975189A - 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 PDF

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Publication number
CN103975189A
CN103975189A CN201180075479.XA CN201180075479A CN103975189A CN 103975189 A CN103975189 A CN 103975189A CN 201180075479 A CN201180075479 A CN 201180075479A CN 103975189 A CN103975189 A CN 103975189A
Authority
CN
China
Prior art keywords
described
pillar
light
photoconduction
lamp
Prior art date
Application number
CN201180075479.XA
Other languages
Chinese (zh)
Inventor
高鸿磊
Z.王
Y.商
C.许
牛爽
Original Assignee
通用电气照明解决方案有限责任公司
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 通用电气照明解决方案有限责任公司 filed Critical 通用电气照明解决方案有限责任公司
Priority to PCT/CN2011/083943 priority Critical patent/WO2013086694A1/en
Publication of CN103975189A publication Critical patent/CN103975189A/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-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
    • F21K2/00Non-electric light sources using luminescence; Light sources using electrochemiluminescence
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-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
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/64Optical 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-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
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20Light sources comprising attachment means
    • F21K9/23Retrofit 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
    • F21K9/232Retrofit 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-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
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/61Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00Globes; Bowls; Cover glasses
    • F21V3/04Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/06Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
    • F21V3/08Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material comprising photoluminescent substances
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2113/00Combination of light sources
    • F21Y2113/10Combination of light sources of different colours
    • F21Y2113/13Combination of light sources of different colours comprising an assembly of point-like light sources
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

A lamp (10) includes at least two light emitting diodes (12, 40) in thermal communication with a heat sink. A translucent envelope (14) receiving light emitted from the light emitting diodes (12, 40) is also provided. A light guide (16) is located to receive light emitted from at least one of the light emitting diodes (12). The light guide (16) includes a first leg extending away from the heat sink toward an interior of the envelope (14) 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 (10).

Description

On LED lamp, manufacture the side luminous catheter technology of filament effect

Background technology

The solid-state illumination technology that comprises light emitting diode (LED) is counted as the mode that produces the lamp with the energy efficiency larger than conventional incandescent lamp and the adverse environment impact fewer than conventional compact fluorescent lamp for a long time always.Correspondingly, introduced the many so-called remodeling lamp that uses solid-state illumination technology.

But from client's viewpoint, the remarkable shortcoming of these solid-state remodeling lamps is, they do not have the outward appearance of conventional incandescent lamp.In addition, LED mainly provides point source light to distribute.For the general appearance of conventional incandescent bulb is provided, coating can be arranged on lamp housing, to create lambert's light distribution (lambertian light distribution).But, do not create filament and generate the conventional incandescent outward appearance of light.For the remodeling that is intended to substitute conventional candlestick pattern (candelabra-style) incandescent lamp, situation especially like this.

Summary of the invention

According to the first embodiment, provide a kind of lamp.This lamp comprises at least two light emitting diodes that carry out heat transmission with radiator.The translucent shell of the light that a kind of reception launches from light emitting diode is also provided.Photoconduction is positioned to receive at least one light launched from light emitting diode.Photoconduction comprise leave radiator towards enclosure extend the first pillar and with respect to angled luminous the second pillar of the first pillar.The second pillar can at least be substantially perpendicular to the longitudinal axis of lamp.

According to the second embodiment, provide a kind of and comprise at least substantially around the lamp of the transparent outer cover of photoconduction.Photoconduction comprises the first pillar, and wherein first end and light emitting diode have light-receiving relation.Photoconduction comprises the second pillar, and it is angled with respect to the first pillar, and is oriented the longitudinal axis that is at least substantially perpendicular to lamp.The second pillar also comprises makes the element of light from wherein launching.

Brief description of the drawings

Fig. 1 is the part side view in the cross section of typical lamp embodiment; And

Fig. 2 is the part top view in the cross section of lamp of Fig. 1.

Detailed description of the invention

Referring now to Fig. 1 and Fig. 2, lamp assembly 10 comprises first pair of light emitting diode (LED) 12, and it is arranged in shell 14.Shell 14 can be formed by dielectric material, for example polymer or glass.Imagination shell 14 can be transparent or translucent.In the time of the traditional candlestick pattern lamp of expection, can select transparent form.On shell, comprise light-scattering coating when creating photodistributed more lambert pattern, select translucent.LEDf12 is transmitted into light in photoconduction 16.

Photoconduction can be column structure, and light guides by total internal reflection or transmits through it.Total internal reflection prevents that light is delivered to photoconduction outside from photoconduction inner side.When light irradiates in photoconduction and around interface between the atmosphere of photoconduction with the angle larger than critical angle, total internal reflection occurs.Critical angle is the function of the refractive index of the medium of photoconduction and the medium of ambient atmosphere.Photoconduction 16 can be formed by the light transmissive material such as glass, Merlon, acrylic acid or other suitable plastics.

In one embodiment, photoconduction comprises attached end 18, and it has the end wall that limits the chamber 19 that surrounds LED 12, the whole light that generated substantially to catch LED.Attached end 18 closely cooperates with printed circuit board (PCB) 20 (LED 12 is installed on it).Printed circuit board (PCB) is provided to the electrical connection of LED, and can be metal core printed circuit board (PCB) (MCPCB), so that heat radiation to be provided.In this, heat radiation can only include MCPCB or other typical heat-releasing device, for example, carry out the heat dissipation fin of heat transmission with MCPCB.

Transparent epoxy resin 21 can be filled chamber 19, and the light attached end 18 of photoconductive tube 16 is fixed to LED 12 and circuit board 20, and photoconduction 16 is oriented and receives the light that light emitting diode 12 is launched.Light passes through photoconduction 16, is sent to remote port 24 via total internal reflection from attached end 18.Photoconduction 16 can be that entirety is injected molded parts.In order to generate visible ray from photoconduction, likely by associated with LED 12 to phosphorus or other material for transformation of wave length.Alternatively, by associated with photoconductive tube 16 material for transformation of wave length be optional.Can expect that photoconductive tube utilizing emitted light has the color temperature CCT in the scope of about 2700K to 10000K.

The remote port 24 of photoconduction 16 can comprise inside or external reflection bar or other surface element, and its reflected illumination is in the light of surface element.Catoptrical at least a portion is with the interface between outer surface and the ambient atmosphere of the arrival photoconduction in angle less than the critical angle of photoconduction-atmosphere interface, thereby permission light is overflowed from photoconduction as utilizing emitted light.

Band or the pattern 26 of reflective surface elements 28 can be arranged on the remote port 24 of photoconduction 16 separately.Surface element 28 can be separated from each other.Surface element 28 can print or otherwise invest the outer surface 30 of photoconduction 16.Alternatively, surface element 28 can form in the inner side of photoconduction 16.

In one embodiment, surface element 28 reflected illumination are in the light of surface element 28.For example, at least a portion of the light transmitting through photoconduction 16 arrives surface element 28, and is reflected or scattering by surface element 28.At least a portion being reflected by surface element can be used as utilizing emitted light 32 and leaves photoconduction 16.Utilizing emitted light 32 can send from photoconduction 16 along the horizontal direction of the lamp longitudinal axis 34.Certainly, utilizing emitted light 32 can send from photoconduction 16 along multiple direction.

The pattern 26 of surface element 28 can be along the length of photoconduction remote port 24, arrange according to the one or more of shape and distribution, to provide the expection of the light 32 sending from photoconduction 16 to distribute.Utilizing emitted light 32 can have the distribution limiting by length and projected angle.Length represents the distance of sending from photoconduction 16 in the horizontal direction of the longitudinal axis along the remote port of photoconduction 16, at the direction parallel with lateral shaft 38, light 32.Projected angle is the radial distance that light extends on the surface of photoconduction 16.In an exemplary embodiments, angle of distribution extends to about 330 ° (wherein 0 ° towards printed circuit board (PCB)) from about 30 °, so that the light pattern associated with incandescent filament to be conventionally provided.

Alternatively, contrary with profile member, surface element 28 can comprise light transmission component, and it has the refractive index different from the refractive index of photoconduction 16.Interface between surface element 28 and photoconduction 16 can change the required critical angle of total internal reflection.For example, surface element 28 can have the refractive index of the critical angle that increases the interface between photoconduction 16 and surface element 28.Increase critical angle and can reduce the light quantity of internal reflection in photoconduction 16, and can increase the light quantity of sending from photoconduction 16.The light being reflected by surface element 28 can send from photoconduction 16 through surface element 28.For example, the refract light sending can leave photoconduction 16 on the same side (surface element 28 is set on it) of photoconduction 16 that approaches photoconduction 16.

By size and/or the density of control surface element 28 or pattern 26, can control along the longitudinal axis 38 amount of utilizing emitted light 32.For example, light 32 can send from photoconduction 16, make not exist utilizing emitted light 32 intensity can perceptual gradient, or it can be designed in the time approaching the longitudinal axis 34 increase as the intensity of lateral shaft 38.

Lamp assembly 10 also comprises a pair of auxiliary LED 40, and it is arranged on printed circuit board (PCB) 20.LED 40 utilizing emitted lights, it is directly radiated on shell 14.In one embodiment, LED 40 can launch with the first radiation, to encourage the phosphor material associated with shell 14 42 (or other light-converting material), for example, for being converted to expection visible spectrum (white light).Alternatively, phosphor material can with LED 40 direct correlation, be for example applied directly on it.As another option, should utilize multiple color LED devices, wherein each radiant light is through mixing, for example, to obtain expecting spectrum output (R-G-B mixes to produce white light).Certainly, lamp is not limited to auxiliary LED or the photoconduction irradiation LED of any specific quantity.Electronic Packaging (not shown) can be arranged in connector base 44.

With reference to preferred embodiment, example embodiment is described.Obviously,, by reading and understanding detailed description above, modifications and changes will be that those skilled in the art can expect.Expection example embodiment is understood to include all these class modifications and changes, as long as within they fall into the scope of claims or its equivalent.

Claims (19)

1. a lamp, comprise with radiator the translucent shell that carries out hot at least two light emitting diodes that transmit, be positioned to receive the light of launching from described light emitting diode, the photoconduction that is positioned to receive at least one light launched from described at least two light emitting diodes, described photoconduction comprises from being close to described radiator towards the first pillar of the inside extension of described shell and with respect to angled the second pillar of described the first pillar, described the second pillar is at least substantially perpendicular to the longitudinal axis of described lamp, and described the second pillar is from described photoconduction utilizing emitted light.
2. lamp as claimed in claim 1, wherein, described the first pillar is the described longitudinal axis based on being above parallel to described lamp at least.
3. lamp as claimed in claim 1, wherein, described photoconduction also comprises described inner the 3rd pillar extending from contiguous described radiator towards described shell, described the 3rd pillar is crossing with described the second pillar.
4. lamp as claimed in claim 3, wherein, described the 3rd pillar intersects at opposite end and described second pillar of one end crossing with described the first pillar.
5. lamp as claimed in claim 1, also comprises light is transmitted into the light emitting diode in described the 3rd pillar.
6. lamp as claimed in claim 3, wherein, described first and the 3rd pillar there is at least substantial total internal reflection.
7. lamp as claimed in claim 1, wherein, at least one light emitting diode is transmitted directly to the major part of its qualified light at least on described shell.
8. lamp as claimed in claim 7, also comprises the material for transformation of wave length associated with described shell, and its light of launching by described at least one light emitting diode encourages, and with different spectral emissions light.
9. lamp as claimed in claim 7, also comprises the material for transformation of wave length associated with described at least one light emitting diode.
10. lamp as claimed in claim 1, wherein, described radiator comprises MCPCB.
11. lamps as claimed in claim 1, wherein, material for transformation of wave length is arranged between described light emitting diode and described photoconduction.
12. lamps as claimed in claim 1, wherein, described photoconduction comprises material for transformation of wave length.
13. 1 kinds of lamps, comprise the translucent shell that at least substantially surrounds photoconduction, described photoconduction comprises the first pillar, this first pillar comprises the first pillar with the first end of at least one light emitting diode in light-receiving relation, described photoconduction comprises angled with respect to described the first pillar and is oriented at least substantially the second pillar perpendicular to the longitudinal axis of described lamp, and described the second pillar comprises the element that makes light leave described photoconduction.
14. lamps as claimed in claim 13, wherein, described shell is transparent.
15. lamps as claimed in claim 14, wherein, described first pillar of described photoconduction comprises the chamber of receiving described light emitting diode.
16. lamps as claimed in claim 13, wherein, described photoconduction comprises three pillar crossing with described the second pillar, described the 3rd pillar and other light emitting diode are in light-receiving relation.
17. lamps as claimed in claim 16, wherein, described photoconduction is roughly u shape.
18. lamps as claimed in claim 13, wherein, described element comprises reflector.
19. lamps as claimed in claim 13, wherein, described the second pillar is column at least substantially, and light leaving between about 30 ° and 330 ° around described the second pillar, 0 ° of orientation of wherein said the second pillar is conducive to described light emitting diode.
CN201180075479.XA 2011-12-14 2011-12-14 Side-emitting guidepipe technology on led lamp to make filament effect CN103975189A (en)

Priority Applications (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
CN103975189A true CN103975189A (en) 2014-08-06

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Country Status (4)

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

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CN104482437A (en) * 2014-12-12 2015-04-01 欧普照明股份有限公司 Lighting device
CN105650497A (en) * 2012-05-04 2016-06-08 通用电气照明解决方案有限责任公司 Reflector and lamp comprised thereof

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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
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

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Also Published As

Publication number Publication date
EP2791573A1 (en) 2014-10-22
EP2791573A4 (en) 2015-07-29
WO2013086694A1 (en) 2013-06-20
KR20140097346A (en) 2014-08-06

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Application publication date: 20140806