CN102971574A - Solid state lamp and bulb - Google Patents

Solid state lamp and bulb Download PDF

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Publication number
CN102971574A
CN102971574A CN2011800223837A CN201180022383A CN102971574A CN 102971574 A CN102971574 A CN 102971574A CN 2011800223837 A CN2011800223837 A CN 2011800223837A CN 201180022383 A CN201180022383 A CN 201180022383A CN 102971574 A CN102971574 A CN 102971574A
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CN
China
Prior art keywords
light
lamp
scatterer
phosphor
lighting
Prior art date
Application number
CN2011800223837A
Other languages
Chinese (zh)
Inventor
李龙
保罗·皮克卡德
詹姆斯·迈克尔·莱
童涛
罗南·勒托奎内
贝恩德·凯勒
埃里克·塔尔萨
马克·尤曼斯
西奥多·洛韦斯
小尼古拉斯·W·梅登多尔普
安东尼·范德文
杰拉尔德·内格利
Original Assignee
克利公司
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
Priority to US33951510P priority Critical
Priority to US33951610P priority
Priority to US61/339,516 priority
Priority to US61/339,515 priority
Priority to US12/848,825 priority patent/US8562161B2/en
Priority to US12/848,825 priority
Priority to US12/889,719 priority patent/US9523488B2/en
Priority to US38643710P priority
Priority to US12/889,719 priority
Priority to US61/386,437 priority
Priority to US61/424,665 priority
Priority to US201061424665P priority
Priority to US201061424670P priority
Priority to US61/424,670 priority
Priority to US12/975,820 priority
Priority to US12/975,820 priority patent/US9052067B2/en
Priority to US61/434,355 priority
Priority to US201161434355P priority
Priority to US61/435,326 priority
Priority to US201161435326P priority
Priority to US61/435,759 priority
Priority to US13/028,946 priority
Priority to US13/034,501 priority
Application filed by 克利公司 filed Critical 克利公司
Priority to PCT/US2011/000405 priority patent/WO2011109098A2/en
Publication of CN102971574A publication Critical patent/CN102971574A/en

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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
    • 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

Abstract

Solid state lamps and bulbs comprising different combinations and arrangements of a light source, one or more wavelength conversion materials, regions or layers which are positioned separately or remotely with respect to the light source, and a separate diffuser. These are arranged on a heat sink in a manner that allows for the fabrication of lamps and bulbs that are efficient, reliable and cost effective and can provide an essentially omni-directional emission pattern, even with a light source comprised of a co-planar arrangement of LEDs. Additionally, this arrangement allows aesthetic masking or concealment of the appearance of the conversion regions or layers when the lamp is not illuminated.; Various embodiments of the invention may be used to address many of the difficulties associated with utilizing efficient solid state light sources such as LEDs in the fabrication of lamps or bulbs suitable for direct replacement of traditional incandescent bulbs. Embodiments of the invention can be arranged to fit recognized standard size profiles such as those ascribed to commonly used lamps such as incandescent light bulbs, while still providing emission patterns that comply with ENERGY STAR TM standards.

Description

Solid state lamp and bulb
The application requires the U.S. Provisional Patent Application sequence number 61/339 of submission on March 3rd, 2010,516, the U.S. Provisional Patent Application sequence number 61/339 that on March 3rd, 2010 submitted to, 515, the U.S. Provisional Patent Application sequence number 61/386 that on September 24th, 2010 submitted to, 437, the U.S. Provisional Patent Application sequence number 61/424 that on December 19th, 2010 submitted to, 665, the U.S. Provisional Patent Application sequence number 61/424 that on December 19th, 2010 submitted to, 670, the U.S. Provisional Patent Application sequence number 61/434 that on January 19th, 2011 submitted to, 355, the U.S. Provisional Patent Application sequence number 61/435 that on January 23rd, 2011 submitted to, 326, and the rights and interests of the U.S. Provisional Patent Application sequence number 61/435,759 of submission on January 24th, 2011.The application comes from the U.S. Patent application the 12/848th of submitting on August 2nd, 2010, the U.S. Patent application the 12/889th that on September 24th, No. 825 1 submitted to, the U.S. Patent application the 12/975th that on December 22nd, No. 719 1 submitted to, the part continuation application that No. the 13/028th, 946, the U.S. Patent application of submitting in No. 820 and on February 16th, 2011 and require their rights and interests.
Background of the present invention
Background technology
Light source incandescent or that be often used as dwelling house and commercial location based on lamp or the bulb of filament.But this lamp is the light source of suitable poor efficiency, and wherein nearly 95% input energy is depleted, main form loss with heat or infrared energy.Replacement a kind of commonly used to incandescent lamp is common described compact fluorescent lamp (CFL), described compact fluorescent lamp is more effective electricity being converted to aspect the light, but need to use toxic material, this toxic material can cause chronic with acute poisoning and can cause environmental pollution with its various compounds.A kind of solution of the efficient for improving lamp or bulb is the solid-state device that uses such as light emitting diode (one or more LED), rather than produces light with metallic filament.
Light emitting diode generally includes the active layer that is sandwiched in the one or more semi-conducting materials between the layer that mixes on the contrary.When doped layer applies bias voltage, hole and electronics are injected into active layer, at active layer hole and electronics again in conjunction with to produce light.Light sends from active layer and from the different surfaces of LED.
In order similarly to use led chip in the device at circuit or other, be known that led chip is encapsulated in the packaging part to provide environment and/or mechanical protection, color selection, light to focus on etc.The LED encapsulation also comprises for the electrical lead, contact or the trace that the LED packaged battery are connected to external circuit.In the typical LED encapsulation 10 in being illustrated in Fig. 1, single led chip 12 is by being welded to connect or conductive epoxy resin is installed on the reflector 13.One or more welding wires (wire bond) 11 ohm contacts with led chip 12 are connected to lead-in wire 15A and/or 15B, and described lead-in wire can be attached to reflector 13 or form one with described reflector.Reflector can use encapsulant (encapsulant material, encapsulating material) 16 to fill, and described encapsulant can comprise the material for transformation of wave length such as phosphor.The light at the first wavelength that is sent by LED can be absorbed by phosphor, and phosphor can responsively send the light of second wave length.Then whole assembly is encapsulated in the transparency protected resin 14, described transparency protected resin can by with the shape molding of lens with collimation by the light that sends from led chip 12.
Fig. 2 has shown another embodiment of conventional LED encapsulation, and this LED encapsulation comprises the one or more led chips 22 that are mounted to such as on the bearing part of printed circuit board (PCB) (PCB) bearing part, substrate or base station (submount) 23.The chaff 24 that is installed on the base station 23 centers on led chip 22 and will leave encapsulation 20 by the light reflection that led chip 22 sends.Reflector 24 also provides mechanical protection to led chip 22.One or more tie lines connect between 27 ohm contacts and electric trace 25A, 25B on the base station 23 that are formed on the led chip 22.Then the led chip 22 of installing is covered with sealant 26, described sealant can provide environment to chip with mechanical protection simultaneously also as lens.Chaff 24 typically is attached to bearing part by scolder or epoxy resin connection.
The transition material that can be included one or more phosphors in the LED of Fig. 2 encapsulation 20 such as those led chips of finding applies, and wherein phosphor absorbs at least some in the LED light.Led chip can send different wave length so that described led chip sends the combination of the light that comes from LED and phosphor.Led chip can be by with many diverse ways phosphor coating, one of them method that is fit to is at U.S. Patent application the 11/656th, 759 and 11/899, describe in No. 790, both belong to the people such as Chitnis, and both be named as " wafer scale phosphor coating method and the device (Wafer Level Phosphor Coating Method and DevicesFabricated Utilizing Method) that uses the method to make ".Alternatively, LED can use the additive method coating, such as electrophoretic deposition (EPD), wherein a kind of suitable electrophoretic deposition method is belonging to the people such as Tarsa, is being named as in the U.S. Patent application the 11/473rd, 089 of " the closed loop electrophoretic deposition of semiconductor device (Close Loop Electrophoretic Depositionof Semiconductor Devices) " and describes.
Developed the lamp with the use solid state light emitter (such as LED) of separating with LED or combining away from the transition material of LED.This device is belonging to the people such as Tarsa, is being named as the United States Patent (USP) the 6th of " the height output radius broad light (High Output Radial Dispersing Lamp Using aSolid State Light Source) that uses solid state light emitter ", disclose in 350,041.The lamp of describing in this patent can comprise solid state light emitter, and this emitted light makes it pass separator and arrives the scatterer with phosphor.Scatterer can be with this light of pattern scattering of expectation and/or by converting in this light at least some to color that different wavelength changes light with phosphor or other transition materials.Separator makes light source and scatterer separate enough distances in some embodiments, so that the heat that comes from light source during with the electric current of the needed rising of room illumination when light source will can not be delivered on the scatterer.Extra remote phosphor technology is described belonging in the United States Patent (USP) the 7th, 614,759 people, that be named as " light-emitting device (Lighting Device) " such as Negley.
That they may have the vision do not expected or aesthetic features in conjunction with a potential shortcoming of the lamp of remote phosphor.For example, lamp can have the surface color different from the typical white of Edison's bulb of standard or transparent appearance when lamp does not produce light.In some cases, lamp may have yellow or orange outward appearance, and this yellow or orange outward appearance are mainly caused by phosphor conversion material, such as yellow/green and red-emitting phosphor.For do not have when light may to cause when illuminated for around many application of aesthetic problem of Architectural Elements, it is undesirable that this outward appearance may be considered to.This may have adverse influence to general consumption person's acceptance of the lamp of these types.
In addition, with in phosphor layer, produce during the transfer process heat can via near chip or substrate surface conduction or phosphor device conformal or contiguous of distributing compare, remote phosphor device may have inadequate heat conductivity heat and distribute the path.Do not have effective heat to distribute the path, the operating temperature that the remote phosphor of heat isolation may be raise, the operating temperature of this rising be possibility even higher than the temperature in suitable conformal coating in some cases.This can offset by some or all of benefit that phosphor realizes are set at a distance with respect to chip.By different way statement, remote phosphor layout with respect to led chip can reduce or eliminate because the direct heating of the phosphor layer that the heat that duration of work produces in led chip causes, but because in the heat that produces in phosphor layer itself during the light transfer process and lack suitable hot path to distribute the heat of this generation, the phosphor temperature reduction that produces may partly or entirely be offset.
The realization of the lamp of another impact use solid state light emitter is relevant with the character of the light that is sent by light source itself with the problem of acceptance.Even angle (being also referred to as luminous intensity distributes) also is important for the solid state light emitter that will replace standard incandescent bulb.Geometrical relationship between the filament of standard incandescent bulb and the glass case, together with the fact that does not need electronic device or radiator, the light that allows to come from incandescent lamp bulb shines with relatively omnidirectional pattern.That is to say that for from the top of bulb to the vertically-oriented bulb of screw base, the luminous intensity of bulb is distributed on a plurality of angles in perpendicular relatively equably, wherein only lamp socket itself has presented significant light-occlusive.
In order to make efficiently lamp or the bulb based on led light source (and related conversion layer), usually it is desirable to, led chip or encapsulation are arranged in the coplanar layout.This has made things convenient for manufacturing and can reduce manufacturing cost by allowing use conventional production equipment and process.But the co-planar arrangement of led chip typically produces the light intensity profile (for example, Lang Baiman (Lambertian) profile) of pointing to forward.Replace in the application of conventional lamp (such as traditional incandescent lamp bulb, incandescent lamp bulb has more omnidirectional beam pattern) with solid state lamp or bulb being intended to, this beam profile is not normally expected.Although it is possible that led light source or encapsulation are installed in the three-dimensional devices, this device is made difficulty and costliness usually.Solid state light emitter also typically comprises electronic circuit and radiator, and electronic circuit and radiator may hinder light in some direction.
Technical field
The present invention relates to solid state lamp and bulb, and relate to especially can produce omni-directional transmissions pattern (emission pattern, emission pattern) effectively and reliably based on lamp and the bulb of light emitting diode (LED).
Summary of the invention
In some embodiments, the present invention relates to use the lighting unit of solid state light emitter, described solid state light emitter conforms to the shape of industrial standard lighting unit, such as A19 white heat or fluorescence light source, described solid state light emitter provides the raising of certain Performance Characteristics for this lighting unit, such as with Energy Star Adapting of performance requirement.These lighting units can be realized by using solid state light emitter (such as light emitting diode), the various combination of material for transformation of wave length, dispersing element and heat management elements such as phosphor.In some embodiments, solid state light emitter comprises at least one light emitting diode of the light (for example blue light) of launching the first wavelength and at least one light emitting diode of the light (for example red light) of emission second wave length.Material for transformation of wave length is included in the remote Wavelength changing element on the solid state light emitter.Wavelength changing element comprises that in the light with the first and second wavelength at least one interacts to produce at least a phosphor of the light (for example sodium yellow) of at least the three-wavelength.Scatterer element and Wavelength changing element away from and do in order to produce more uniform light emission.Heat management elements comprises radiator unit, and radiator unit is removed heat and comprised and being engaged in such as the standard white heat of A19 bulb or the shape in the fluorescence light source.
In some embodiments, the invention provides such lamp and bulb, these lamps and bulb generally include light source, one or more material for transformation of wave length, with respect to light source discretely or at a distance different combinations and the layout of the zone of location or layer and the scattering layer that separates.This arrange to allow efficient, reliable and lamp and bulb are made in the cost efficiency highland, and omnidirectional in fact emission pattern can be provided, even for the light source of the LED that comprises coplanar setting.In addition, this arranges the outward appearance that allows to cover aesthsticly or hide transition region or layer when lamp does not throw light on.Various embodiment of the present invention can be used for solving and many difficulties of using efficient solid state light emitter (such as LED) to be associated in the manufacturing of the lamp that is applicable to the traditional incandescent lamp bulb of directly replacement or bulb.Embodiments of the present invention can be set to meet the recognized standard size profile, such as those standard size profiles that belong to such as the primary light of incandescent lamp bulb, thereby help the direct replacement of these bulbs.
Be included in light source on the radiator according to an embodiment of lighting device of the present invention.Scatterer also is included on the radiator and is spaced apart with light source.Material for transformation of wave length be included on the radiator and be arranged on light source and scatterer between and separate with light source and scatterer.Lamp is arranged to be engaged in the A19 case and pattern is launched in simultaneously emission basically uniformly.
Be included in light source on the radiator according to another embodiment of lighting device of the present invention.As embodiment above, scatterer is included on the radiator and is spaced apart with light source.Material for transformation of wave length be included on the radiator and be arranged on light source and scatterer between and spaced apart with light source and scatterer.Radiator comprises a plurality of fin, and each fin all has and angle part arranged from the outside angled bottom of the central axis of lighting device and backward towards the angled top of central axis part, wherein pattern is launched in the lighting device emission basically uniformly.
An embodiment according to solid state lamp of the present invention comprises the radiator with a plurality of fin and the solid state light emitter that is installed on the radiator.The phosphor bearing part is included on the radiator, above light source and spaced apart with light source.Scatterer also is included on the radiator, above the phosphor bearing part and spaced apart with the phosphor bearing part.Phosphor bearing part and scatterer are frusto-spherical basically, so that phosphor bearing part and scatterer provide two dome (double-dome) structures, wherein lamp is assemblied in the standard size profile, and pattern is launched in emission basically uniformly.
Of the present invention these and other the aspect and advantage from following detailed description with illustrate in the mode of example the accompanying drawing of feature of the present invention and will become obvious.
Description of drawings
Fig. 1 has shown the sectional view of the embodiment that the LED of prior art encapsulates;
Fig. 2 has shown the sectional view of another embodiment that the LED of prior art encapsulates;
Fig. 3 has shown that A19 replaces the size specification of bulb;
Fig. 4 is the sectional view according to an embodiment of lamp of the present invention;
Fig. 5 is the sectional view according to an embodiment of lamp of the present invention;
Fig. 6 is the sectional view according to an embodiment of lamp of the present invention;
Fig. 7-Figure 10 is the sectional view according to the different embodiments of phosphor bearing part of the present invention;
Figure 11 is the stereogram according to an embodiment of lamp of the present invention;
Figure 12 is the sectional view that is presented at the lamp among Figure 11;
Figure 13 is the exploded view that is presented at the lamp among Figure 11;
Figure 14 is the stereogram according to an embodiment of lamp of the present invention;
Figure 15 is the stereogram with the lamp among Figure 14 of phosphor bearing part;
Figure 16 is the exploded view according to an embodiment of lamp of the present invention;
Figure 17 is the sectional view that is presented at the lamp among Figure 16;
Figure 18 is the side view according to an embodiment of radiator of the present invention;
Figure 19 is the stereogram according to an embodiment of lamp of the present invention;
Figure 20 is the three-dimensional exploded view that is presented at the embodiment among Figure 19;
Figure 21 is the sectional view that is presented at embodiment among Figure 19;
Figure 22 is the side view that is presented at the embodiment among Figure 19;
Figure 23 is the sectional view that is presented at the part of the lamp among Figure 18;
Figure 24 is another sectional view that is presented at the part of the lamp among Figure 18, and it has different radiator fins and arranges;
Figure 25 to Figure 28 is the side view according to scatterer dome of the present invention;
Figure 29 is the side view according to another embodiment of scatterer dome of the present invention;
Figure 30 is the curve map that shows according to the contrast emission profile of lamp of the present invention;
Figure 31 is the curve map that shows according to the emission profile of lamp of the present invention;
Figure 32 is that demonstration is according to the form of the emission characteristics of an embodiment of lamp of the present invention;
Figure 33 is the curve map that shows according to the emission profile of particular lamp embodiment of the present invention;
Figure 34 is that demonstration is according to the form of the emission characteristics of an embodiment of lamp of the present invention;
Figure 35 is the figure that is presented at according to an embodiment of the scatterer layer thickness in the scatterer of the present invention;
Figure 36 to Figure 41 has shown the different embodiments according to scatterer dome of the present invention; And
Figure 42 is the sectional view according to another embodiment of lamp of the present invention.
The specific embodiment
The present invention is directed to the different embodiment of following lamp or bulb structure, these lamps or bulb structure are efficient, reliable and cost-effective, and these lamps or bulb structure can provide omnidirectional in fact emission pattern from the illuminating source (such as the forward direction illuminating source) of orientation in some embodiments.The present invention also has the modulated structure of the solid-state emitters of remote transition material (or phosphor) and long distance scatter element or scatterer for use.In some embodiments, scatterer not only is used for phosphor covered from lamp user's the visual field and opens, and can will come from the light scattering of light source of remote phosphor and/or lamp or the emission pattern that redistribution enters expectation.In some embodiments, the emission pattern scattering that can be set to will be forward to point to of scatterer dome enters for common illumination and uses useful more omnidirectional pattern.Scatterer can be used in the embodiment of the remote transition material with two and three dimensions shaping, and is combined with the feature that can convert the emission of pointing to forward that comes from led light source to the beam profile suitable with standard incandescent bulb.
Some embodiments of lamp can have above light source and with (or frusto-spherical) three-dimensional transition material (phosphor bearing part) of the isolated dome shape of light source.The scatterer that also can comprise dome shape, the scatterer of this dome shape and transition material are spaced apart and above transition material, so that the existing two dome structures of lantern show.Space between each structure can comprise light mixing chamber, and described light mixing chamber not only promotes the scattering of lamp emission, also promotes the color homogeneity of lamp emission.Space between light source and the transition material and the space between the transition material can be used as light mixing chamber.Other embodiment can comprise extra conversion material or the scatterer that can form extra mixing chamber.The order of dome transition material and dome shape scatterer can be different, so that some embodiments can have the scatterer in the transition material inboard, the space between wherein forms light mixing chamber.These only are according to many different transition materials of the present invention and some in the scatterer layout.
Lamp embodiments more according to the present invention can comprise the light source of the co-planar arrangement with one or more led chips or encapsulation, and wherein emitter is installed on the surface smooth or plane.In other embodiment, led chip can be not coplanar, such as being on the pedestal or on other three-dimensional structures.Coplanar light source can reduce the complexity that emitter is arranged so that coplanar light source both easier also more cheap manufacturing.But coplanar light source trends towards mainly launching in direction forward, such as launching with Lang Baiman emission pattern.In different embodiments, it may be desirable that the emission imitation can provide at different emission angles the light pattern near the pattern of the conventional incandescent lamp bulb of uniform emissive porwer and color homogeneity.Different embodiment of the present invention can comprise can be the emission pattern from the uniformly feature that converts in angular field of view basically heterogeneous.
In some embodiments, conversion layer or zone can comprise phosphor bearing part and at least a phosphor material with thermally-conductive materials, described thermally-conductive materials is for coming from the only at least part of transparent of light source, and each absorption in the described at least a phosphor material comes from light and the emission different wave length of light source.Scatterer can comprise scattering film/particle and such as the bearing part that is associated of glass case, and can be used for scattering or be redirected in the light that is sent by light source and/or phosphor bearing part at least some, so that the beam profile of expectation to be provided.Scattering nature, surface roughness or the smoothness of the character of scatterer (such as geometry), scattering layer and the spatial distribution of scattering layer character can be in order to control various lamp character, such as color homogeneity and the luminous intensity distribution at foundation visual angle.By sheltering phosphor bearing part and other interior lamp features, scatterer does not provide the overall lamp outward appearance of expecting when lamp or bulb have illumination.
Can comprise heat spreader structures, described heat spreader structures can with light source and with phosphor bearing part and other modulation element thermo-contacts with distribute heat in surrounding environment.Also can comprise electronic circuit, electrical power being provided to light source and other performances are provided, such as dimming etc., and circuit can comprise power is applied to device on the lamp, such as Edison's socket etc.
The different embodiment of lamp can have many different shape and size, and the some of them embodiment has the size that is coupled in the standard size case, such as be presented at A19 size case 30 among Fig. 3.This so that lamp as to the white heat of routine with the alternative of fluorescent lamp or bulb be useful especially, wherein light fixture according to the present invention has energy consumption and the long life-span that reduces, this provides from solid state light emitter of the present invention.Also can cooperate the standard size profile of other types according to lamp of the present invention, include but not limited to A21 and A23.
Light source can comprise solid state light emitter in some embodiments, such as dissimilar LED, led chip or LED encapsulation.In some embodiments single led chip or the encapsulation can use, and in other embodiment a plurality of led chips or the encapsulation can be arranged to dissimilar arrays.By making the isolation of phosphor and led chip heat and having good thermal diffusivity, the levels of current that led chip can be higher drives and can not cause the conversion efficiency of phosphor and the adverse effect of its long-term reliability.This can allow for the flexibility of excessive driving LED chip to reduce the quantity of the required LED of the luminous flux that produces expectation.This can reduce again the cost on the complexity of lamp thereupon.These LED encapsulation can comprise that the LED that seals with the material that can afford to stand the luminous flux that raises maybe can comprise without the LED that seals.
LED lamps more according to the present invention can have the correlated colour temperature (CCT) from about 1200K to 3500K, and other some LED can launch to have to change from top from 0 to 150 degree of lamp and are no more than the light that 10% luminous intensity distributes.In other embodiment, lamp can be launched to have from 0 to 135 degree and changes and to be no more than the light that 20% luminous intensity distributes.In some embodiments, be in the zone of 135-180 degree from least 5% of the total flux of lamp.Other embodiment can be launched to have from 0 to 120 degree and changes and to be no more than the light that 30% luminous intensity distributes.In some embodiments, the LED light fixture has so that be no more than 0.004 color space uniformity along with the variation colourity at visual angle changes from weighted average point.Other lamp can meet the job requirement of replacing luminous efficiency, color space uniformity, light distribution, colour rendering index, size and the base type of incandescent lamp bulb for 60 watts.
As describing in more detail hereinafter, LED lamp according to the present invention can have the emitter that many dissimilar emission different wave lengths are composed.In some embodiments, be transmitted in the light at least three peak wavelength places according to the luminescence unit of principle of the present invention, for example blue, yellow and red.At least the first wavelength emitted, such as blue light, and second wave length is launched by Wavelength changing element at least, for example, green and/or yellow light.Depend on embodiment, the light of three-wavelength (such as green and/or red light) can be by solid state light emitter and/or Wavelength changing element emission.In some embodiments, described at least three wavelength can be by Wavelength changing element or emitted.In some embodiments, solid state light emitter can be launched and the wavelength of material for transformation of wave length light overlapping, approximate or identical wavelength.For example, solid state light emitter can comprise launches for example light of the wavelength of ruddiness, and the light of this emission is with overlapping or substantially the same by the light of the phosphor in the material for transformation of wave length (for example adding the red-emitting phosphor of yellow phosphor in material for transformation of wave length to) emission.
In some embodiments, solid state light emitter comprises that emission has at least one extra LED of the light of at least one different peak wavelength, and/or material for transformation of wave length comprises at least one extra phosphor or the fluorophor of launching at least one different peak wavelength.Therefore, the luminescence unit emission has the light of at least four different peak wavelengths.
According to this embodiment, solid state light emitter can comprise single or multiple LED strings.Wavelength changing element can comprise the phosphor that conformally is coated on the solid state light emitter, and described phosphor is arranged on the solid state light emitter top and/or locates away from solid state light emitter as different Wavelength changing elements.For example, the luminescence unit that use was coated in or was distributed in the material for transformation of wave length on single led in solid state light emitter belong to the people such as van de Ven, called after " the LED lamp (LED Lamp withHigh Color Rendering Index) with high color rendering index (CRI) ", transfer (the Cree of kerry Corp., Inc.) U.S. Patent application the 12/975th, describe in No. 820, this application is incorporated into this paper to quote mode as proof.Wavelength changing element can comprise on the inboard that is coated in the phosphor bearing part and/or the outer surface and/or embed the phosphor bearing part or form whole phosphor particles with the phosphor bearing part.The scatterer element can comprise on the outside that is coated in scatterer and/or the inner surface and/or embed scatterer or form whole scatterer particle with scatterer.In some embodiments, scatterer comprises structure or the feature such as erosion and roughening.
According to this embodiment, the different layouts of being correlated with from the relation between led light source and the material for transformation of wave length are possible.In some embodiments, remote Wavelength changing element covers all led light sources.In other embodiment, remote Wavelength changing element covers whole in some rather than the led light source in the led light source.For example, remote Wavelength changing element covers the LED of the light (for example blue light) of the identical or approximate wavelength of emission, but does not cover other LED of the light (for example red light) of another wavelength of emission.In some embodiments, at least the first remote Wavelength changing element covers first group of LED, and the second wave length conversion element covers second group of LED at least.Depend on embodiment, luminescence unit can comprise the LED that is coupled to optically coated material for transformation of wave length, set material for transformation of wave length and/or remote material for transformation of wave length.Other layouts between LED and material for transformation of wave length are possible.
In some embodiments of the present invention, the LED assembly comprises the LED encapsulation of launching blue light and has other LED encapsulation of emission red light.In some embodiments, the LED assembly of LED lamp comprises the led array with at least two group LED, if if one group of led array illumination light that emission is had the dominant wavelength of from 440 to 480 nanometers wherein is and the light that another group led array illumination has the dominant wavelength of from 605 to 630 nanometers with emission.The phosphor bearing part can be arranged as absorb and again emission come from one or two light in two wave spectrums, and can have one or more phosphors, every kind of phosphor can absorption optical and is again launched different wave length (for example, wavelength downward conversion).Some lamp embodiments can comprise a plurality of LED of emission blueness and red light, and wherein the phosphor bearing part comprises the absorption blue light and again launches the yellow phosphor of yellow or green light, and wherein the part of blue light is passed the phosphor bearing part.The red light that comes from red LED is passed the yellow/green phosphor and seldom is absorbed or is not absorbed, so that the lamp emission is blue, yellow/green and the red white light that is combined into.In other other embodiment, phosphor bearing part blue and red LED can comprise the yellow/green phosphor and comprise red-emitting phosphor, in order to help the luminous red component of lamp and in order to assist scattering LED light.
In some embodiments, LED can comprise two groups, and wherein one group of LED interconnects with the first series connection string, and another group LED interconnects with the second series connection string.This only is a kind of in can interconnective many modes of LED, and is appreciated that LED can arrange with many different parallel connections and the interconnective combination of series connection.
Can launch the light with high color rendering index (CRI) (CRI) according to lamp of the present invention, such as being 80 or higher in some embodiments.At some in other the embodiment, lamp can be launched has 90 or the light of higher colour rendering index.Lamp also can produce the light of the correlated colour temperature (CCT) that has from 2500K to 3500K.In other embodiment, light can have the correlated colour temperature from 2700K to 3300K.In some other embodiment, light can have the correlated colour temperature from about 2725K to about 3045K.In some embodiments, light can have the correlated colour temperature of about 2700K or about 3000K.In other other embodiment, adjustable (dimming) only wherein, correlated colour temperature can reduce by light modulation.In this case, correlated colour temperature can be reduced to and be low to moderate 1500K or even 1200K.In some embodiments, correlated colour temperature can improve by light modulation.Depend on embodiment, other output spectrum characteristic can change based on light modulation.
Other layouts that it should be noted that LED can be used for embodiments of the present invention.Can use the LED of each type of equal number, and the LED encapsulation can be arranged with the pattern that changes.Can use the single led of each type.Can use the additional LED of the light that produces additional color.One or more LED by using the one or more additional color light of emission and/or comprise phosphor that one or more are extra or the material for transformation of wave length of fluorophor, the colour rendering index of luminescence unit can improve.Fluorophor can be used for all led modules.Single fluorophor can be used for a plurality of led chips and a plurality of led chip can be included in one, the encapsulation of some or all of LED matrix.The further detailed example that uses the LED that launches different wave length to organize to produce basically white light can find that in the United States Patent (USP) 7,213,940 of authorizing this patent is incorporated into this by quoting mode as proof.
Lamp embodiments more according to the present invention can comprise first group of solid-state light emission body and first group of fluorophor, and wherein first group of fluorophor comprises at least a fluorophor.Lamp also comprises second group of solid-state light emission body, and wherein second group of solid-state light emission body comprises at least one solid-state light emission body and at least the first power line.In in first group of solid-state light emission body each and the second group of solid-state light emission body each can be electrically connected to the first power line.If illuminated can the emission of each in described first group of solid-state light emission body has scope at the light of the dominant wavelength in 430 nanometer to 480 nanometers.If being excited, each in described first group of fluorophor can launch the light with scope dominant wavelength in from about 555 nanometers to about 585 nanometers.If can launching, each illumination in described second group of solid-state light emission body has scope at the light of the dominant wavelength in 600 nanometer to 630 nanometers.
If electric current is provided to the first power line, the combination of the light that leaves from light-emitting device that the light that leaves from light-emitting device that the light that leaves from light-emitting device that (1) is sent by first group of solid-state light emission body, (2) are sent by first group of fluorophor and (3) are sent by second group of solid-state light emission body will produce in the situation that lacks any extra light has the x on 1931CIE chromatic diagram (ChromaticityDiagram), the mixed light of y coordinate.These coordinates have defined a bit, in the 10 rank MacAdam's ellipses (MacAdam's ellipse) of this at least one point on the black body locus that is in the 1931CIE chromatic diagram.The combination of light also produce have x, the inferior mixed light of y color coordinates, described x, y color coordinates have defined a bit, in the zone that this first, second, third, fourth and fifth connecting line segment by the definition of first, second, third, fourth and fifth point on being in the 1931CIE chromatic diagram surrounds.First can have 0.32,0.40 x, y coordinate, and second point can have 0.36,0.48 x, y coordinate, thirdly can have 0.43,0.45 x, y coordinate, the 4th can have 0.42,0.42 x, y coordinate, and the 5th can have 0.36,0.38 x, y coordinate.
The present invention also provides the LED lamp that has with such as the relevant geometry of the feature that is LED heat abstractor or radiator, and the lamp emission pattern that described LED heat abstractor or radiator allow satisfies the Energy Star for integrated LED lamp (ENGERY STAR) of revision on March 22nd, 2010 The desired content of requirements of plan, described Energy Star Requirements of plan is incorporated into this to quote mode as proof.Relevant geometry allows light from 0 to 135 degree in 20% inscattering of mean value, and wherein more greatly 5% of total light flux and in 135 to 180 degree zones (measurements at place, 0,45 and 90 degree azimuths).Relevant geometry comprise the LED assembly install width, highly, lamp holder device for dispensing width and unique angle of cutting sth. askew downwards.With phosphor bearing part or reflecting umbrella and the combination of scatterer dome of sphere, described geometry will allow light at the star of these strict energy Require inscattering.The present invention can reduce dissipation LED and the needed surface area of power electronic device heat energy and still allow lamp to meet the A19 lamp profile of American National Standards Institute.
The present invention also provides the lamp of the emission effciency with enhancing, and wherein lamps more according to the present invention are with 65 or the emission of the efficient of larger lumen every watt (LPW).In other embodiment, lamp can be 80 or the efficient utilizing emitted light of every watt of larger lumen.In all these embodiments, (for example, 3000K or lower or 2700K or lower in some embodiments) and the more preferably light of colour rendering index (for example, 90 or larger colour rendering index) can be launched and had more preferably colour temperature to lamp.
Lamp embodiments more according to the present invention can be launched 700 lumens or larger light, and other some lamps can be launched 750 lumens or larger light.Other other lamp embodiment can be launched 800 lumens or larger light, and wherein some in these lamp embodiments are from 10 watts or less this light of power emission.These emissions can provide the brightness of expectation that extra advantage is provided simultaneously, namely can be by being used for oneself less than not too strict legal (for example, the Energy Star of the lamp of 10 watts of work ) test.This can cause lamp to introduce to the market quickly.This emission effciency is permitted multifactorial result, such as the maximum thermal sheet area that is used for radiator, cause stopping minimum light the optimizing optical parts and use the remote transition material that can cause the efficient higher than the emitter with conformal spreading transition material (every watt of 80 lumens or higher).But these embodiments can comprise the emitter of the wavelength converter materials with conformal spreading.Therefore, according to aspects of the present invention the embodiment of luminescence unit can be used to provide for the star that can satisfy energy The LED-based alternative A lamp of the incandescent 60 watts of incandescent light bulb of the standard of performance requirement.The LED that other embodiment can be provided for higher wattage incandescent lamp bulb substitutes A lamp luminescence unit, such as 75 watts of standards or 100 watts of incandescent A19 bulbs.In other embodiment, luminescence unit can 40 watts of incandescent A19 bulbs of alternate standard.White heat or fluorescent lamp that other embodiments of luminescence unit according to aspects of the present invention can be shaped in order to substitute other standards.
Different lamp embodiments also can comprise the parts in the life-span that is arranged so that lantern show is now grown relatively.Life-span can be 25,000 hours or longer in some embodiments, and in other embodiment the life-span can be 40,000 hours or longer.Life-span can be 50,000 hours or longer in other other embodiments.The life-span of these prolongations can be under the operating efficiency of for example every watt of 80 lumens, and can be under the different temperatures such as 25 degrees centigrade and/or 45 degrees centigrade.This life-span can use many diverse ways to measure.First method can be to use lamp simply until lamp damages for the life-span of lamp.But this may usually need the time durations that prolongs, and this is so that this method is unpractical in specific environment.Another acceptable method is the life-span of calculating lamp by the life-span that is used in each parts of using in the lamp.This information is usually provided by component manufacturer, and usually is listed in the working life under the different conditions of work, such as temperature.Then these data can use known method utilization to calculate the life-span of lamp.The 3rd acceptable method is by accelerate the life-span of lamp in the lower work of the condition (such as power or the switching signal of higher temperature or raising) that improves.This can cause lamp to damage early, and wherein then these data use to determine the in normal working conditions working life of lamp in known method.
Different embodiment of the present invention also can comprise security feature, and the specific electric characteristic of protection or element do not expose in described security feature in scatterer dome and phosphorescence ball cover or the situation of both breaking.These security features can reduce and/or eliminate owing to the danger that contacts the shock hazard that causes with these electric characteristics, and these security features can comprise that the difference of the electrically insulating material of coating electrical feature arranges in some embodiments.
The invention provides with simple and relatively cheap layout and realize the feature of long-life and efficient operation and the unique combination of characteristic.Lamp can be at every watt of 80 lumen or better be worked under the efficient, still produces 80 and higher or 90 and higher colour rendering index simultaneously.In some embodiments, this efficient can realize in less than 10 watts situation.This can provide in having the lamp of arranging as the LED of light source and two dome scatterer and transition material, still is fit to A19 size case simultaneously and Energy Star is observed in emission The uniform light that requires distributes.Lamp with this setting also can be launched the light with 3000K and less or 2700K or less temperature.
The present invention here describes with reference to specific embodiment, but is appreciated that the present invention can and should not be interpreted as being limited to the embodiment of setting forth here with many different forms embodiments.Especially, the present invention describes about particular lamp with one or more LED of adopting different structure or led chip or LED encapsulation hereinafter, but is appreciated that the present invention can be used for having many other lamps of many different structures.Hereinafter embodiment is described with reference to the LED among a plurality of LED, but is appreciated that and this means and comprise led chip and LED encapsulation.Parts can have except show those difformity and size and can comprise the LED of varying number.Be appreciated that also the embodiment of describing hereinafter uses coplanar light source, but be appreciated that non-coplanar light source also can use.The led light source that also is appreciated that lamp can comprise one or more LED, and in the embodiment that has more than a LED, these LED can have different emission wavelengths.Similarly, some LED can have phosphor layer or zone contiguous or contact, and other LED can have the contiguous phosphor layer of heterogeneity or not have phosphor layer at all.
The present invention is here with reference to transition material, material for transformation of wave length, remote phosphor, phosphor, phosphor layer and relevant term description.The use of these terms should not be interpreted as restrictive.The use that is appreciated that the remote phosphor of term, phosphor or phosphor layer means and comprises all wavelengths transition material and be similarly applicatory to all wavelengths transition material.
In the embodiment of here describing some comprise remote phosphor and the long distance scatter device layout of separating, and some of them adopt two domes to arrange.Be appreciated that in other embodiment, can exist to have conversion and the two single dome shape similar structures of scattering nature, maybe can exist various combination with transition material and scatterer more than two dome.Transition material and scatterer can be provided in the corresponding dome, or transition material and scatterer can be together on one or more in dome.The term dome should not be interpreted as being limited in any specifically in shape.This term can comprise many different 3D shapes, includes, but are not limited to bullet-shaped or spherical or elongated shape.
The present invention here with reference to transition material, phosphor layer and phosphor bearing part and mutually away from a plurality of scatterers describe.Refer at a distance in this article spaced apart and/or not or inner directly thermo-contact not in the above.Be appreciated that further that when dominant wavelength is discussed existence is around wave-length coverage or the width of dominant wavelength, therefore the present invention's meaning is to cover that wavelength wave-length coverage on every side when dominant wavelength is discussed.
Also be appreciated that when be known as such as the element of layer, zone or substrate another element " on " time, it can be directly can have intermediary element on another element or also.In addition, relational language, such as " interior ", " outward ", " on ", " top ", D score, " below " and " following ", and similar term here can be in order to describe the relation in a layer or another zone.Be appreciated that these terms are intended to comprise the different azimuth except describing orientation in the accompanying drawings of device.
Although term first, second etc. here can be in order to describe different elements, parts, zone, layer and/or section, these elements, parts, zone, layer and/or section are not limited by these terms should.These terms are only in order to distinguish element, parts, zone, layer or a section and another element, parts, zone, layer or section.Therefore, the first element, parts, zone, layer or the section discussed hereinafter can be called the second element, parts, zone, layer or section and not depart from instruction of the present invention.
Embodiments of the present invention are here described with reference to the viewgraph of cross-section diagram, and this viewgraph of cross-section diagram is to be intended to showing of embodiments of the present invention separate.Like this, the actual (real) thickness of these layers can be different, and expects from the variation of graphic shape as the result of for example manufacturing technology and/or tolerance.Embodiments of the present invention should not be interpreted as being limited to the given shape in illustrated zone here, but will comprise by for example making the deviation in shape that causes.The zone that illustrates or be described as square or rectangle will typically have because feature circle or curve that normal manufacturing tolerance causes.Therefore, the zone that is illustrated in the drawings is actually schematically and their shape be not intended to illustrate device the zone accurate shape and be not intended to limit the scope of the invention.
Fig. 4 has shown an embodiment according to lamp 50 of the present invention, and this lamp comprises heat spreader structures 52, and this heat spreader structures has optics cavity 54, and this optics cavity has for the platform 56 that keeps light source 58.Although this embodiment and some embodiment reference optical chambeies are hereinafter described, be appreciated that many other embodiments may be provided in and do not have optics cavity.These can include, but are not limited to light source on the plane surface of modulated structure or on pedestal.Light source 58 can comprise many different emitters, and the embodiment that wherein shows comprises LED.Many different led chips that can obtain or LED encapsulation can be used commercially, include but not limited to encapsulate from those led chips or the LED that the kerry Corp. that is positioned at Durham, the North Carolina state (Durham, North Carolina) buys.Be appreciated that the lamp embodiment may be provided in and do not have optics cavity, wherein LED installs in a different manner in these other embodiment.For example, light source can be installed to maybe can provide pedestal to be used for keeping LED on the plane surface in the lamp.
Light source 58 can use many different known installation methods and material to be installed on the platform 56, and the light that wherein comes from light source 58 is launched the open top in chamber 54.In some embodiments, light source 58 can directly be installed on the platform 56, and light source can be included on base station or the printed circuit board (PCB) (PCB) in other embodiment, and then described base station or printed circuit board (PCB) are installed on the platform 56.Platform 56 and heat spreader structures 52 can comprise that wherein some in the conducting path are conductive trace or wire be used to the electrical conduction path of the signal of telecommunication to light source 58 is provided.The part of platform 56 also can be disseminated to platform then to heat spreader structures by the heat that heat conducting material is made and produced during operation in some embodiments.
Heat spreader structures 52 can comprise heat conducting material at least in part, and many different heat conducting materials can use, and comprises different metals, such as copper or aluminium or metal alloy.Copper can have up to 400 watts/meter-Kelvin (W/m-k) or higher thermal conductivity.In some embodiments, radiator can comprise raffinal, and this raffinal can have at room temperature about 210 watts/meter-Kelvin's thermal conductivity.In other embodiment, heat spreader structures can comprise the die casting aluminium of the thermal conductivity with about 200 watts/meter-Kelvin (W/m-k).Heat spreader structures 52 can comprise also that other heat distributes feature, and such as fin 60, the surface area that described fin increases radiator is to promote more effective the distributing in the environment.In some embodiments, fin 60 can be made by the material with thermal conductivity higher than the remainder of radiator.In the embodiment that shows, fin 60 is presented on the direction of cardinal principle level, but is appreciated that in other embodiment fin can have vertical or angled orientation.In other other embodiment, radiator can comprise the active cooling element, such as fan, to reduce the thermal-convection resistance of lamp inside.In some embodiments, distribute by advection heat from the heat of phosphor bearing part and distribute and realize through the combination of the conduction of heat spreader structures 52.Different heat radiation layouts and structure are at the U.S. Patent application the 61/339th that belongs to the people such as Tong, called after " the LED lamp (LED Lamp Incorporating Remote Phosphor with Heat Dissipation Featuresand Diffuser Element) with remote phosphor of merging of heat dissipation characteristics and scatterer element ", describe in No. 516, this application also transfers kerry Corp., and is incorporated into this by quoting mode as proof.
Reflecting layer 53 also can be included on the heat spreader structures 52, such as on the surface of optics cavity 54.In not having those embodiments of optics cavity, the reflecting layer can be included in around the light source.In some embodiments, described surface can apply with the material with such reflectivity, namely this reflectivity is about 75% or higher for the light (" light ") of the lamp visible wavelength of being sent by light source 58 and/or material for transformation of wave length, and in other embodiment, it is about 85% or higher reflectivity that this material can have light.In other other embodiment, material can have about 95% or the higher reflectivity to light.
Heat spreader structures 52 can also comprise be used to being connected to electric power source, such as the feature that is connected to different electrical outlets.In some embodiments, heat spreader structures can comprise the feature of the type that is fit to conventional electrical outlets.For example, described heat spreader structures can comprise that be used to the feature that is installed to standard Edison socket, this feature can comprise the threaded portion, this threaded portion can precession Edison socket in.In other embodiment, described heat spreader structures can comprise that standard plug and electrical outlets can be the reference power supply sockets, maybe can comprise the GU24 base unit, perhaps described heat spreader structures can be that clip and electrical outlets can be the socket of admitting and keep this clip (for example, as be used in those sockets in many fluorescent lamps).These are only used in the selection of heat spreader structures and socket some, also can arrange with other electric power safety ground is delivered to lamp 50 from socket.
Can comprise supply of electric power device or power conversion unit according to lamp of the present invention, this supply of electric power device or power conversion unit can comprise that driver is to allow bulb to start working and the light source adjustment capability is provided from ac line voltage/electric current.In some embodiments, the supply of electric power device can be contained in chamber/housing in the lamp radiator (hereinafter be presented at a embodiment among Figure 42), and can comprise the off-line constant current led driver that uses non-isolation quasi-resonance flyback topology.Led driver can be installed in lamp inside and can comprise in some embodiments 25 cubic centimetres or less volume, and can comprise about 22 cubic centimetres or less volume at led driver described in other the embodiment, and in other other embodiment, it is 20 cubic centimetres or less.In some embodiments, but the supply of electric power device can be nonadjustable be cheaply.Be appreciated that employed supply of electric power device can have different topologys or geometry and also can be adjustable.Embodiment with light modulator (dimmer) can represent many different dimming characteristics, can adjust to 5%(forward position and rear along the two downwards such as shearing mutually).In light adjusting circuits more according to the present invention, light modulation realizes by the output current that is reduced to LED.
Supply of electric power device unit can comprise in many different modes and is arranged in many different parts on the printed circuit board (PCB).The supply of electric power device can and can represent many different operating characteristic by many different power works.In some embodiments, the supply of electric power device can be arranged as by 120 volts of alternating currents (VAC) ± 10% signal and come work to provide simultaneously greater than 200 milliamperes (mA) and/or greater than the light source drive signal of 10 volts (V).In other embodiment, drive signal and can be about 300 milliamperes generation electric power and/or greater than 15 volts.In some embodiments, driving signal can be about 400 milliamperes and/or about 22 volts.
The supply of electric power device also can comprise permission, and it uses the parts of relatively high-caliber efficient work.A tolerance of efficient can be the percentage that arrives the input energy of supply of electric power, and in fact this input energy is exported from lamp source as light.Many energy may loss in the course of work of supply of electric power.In some lamp embodiments, supply of electric power can work so that obtain supply of electric power the input energy surpass 10% as light from LED radiation or output.In other embodiment, input exporting as LED light above 15% of energy.In other other embodiment, the input energy about 17.5% as the output of LED light, and in other embodiments, the input energy about 18% or manyly export as LED light.
Can be included in hot Embedding Material around the supply of electric power device or other heat conducting materials that is fit to for the protection of, and auxiliary heat is left from the radiation of supply of electric power device parts.Be arranged in the embodiment in radiator chamber at the supply of electric power device, hot Embedding Material can fill all or part of of chamber so that this hot Embedding Material around the supply of electric power device.Can use many different thermally-conductive materials, that these thermally-conductive materials represent is safe, electric insulation, heat conducting, have some or all in low-thermal-expansion and the enough viscosity, so that these thermally-conductive materials can not flow out the crack in the heat radiation chamber before solidifying.Some embodiments can use the embedding compound that comprises epoxy resin and glass fibre, such as being those epoxy resin and the glass fibre that can obtain from Dow Corning Corporation (Dow Corning, Inc.).
Be included in the phosphor bearing part 62 of the open top top in chamber 54, and be included in the scatterer 76 of the dome shape of phosphor bearing part 62 tops.In the embodiment that shows, the phosphor bearing part covers whole opening and the chamber opening is shown as circle and phosphor bearing part 62 is disks.Be appreciated that chamber opening and phosphor bearing part can be many different shape and size.Be appreciated that also phosphor bearing part 62 can cover the part less than whole chamber opening.As further describing hereinafter, scatterer 76 is arranged as the lamp emission pattern that the light scattering that will come from phosphor bearing part and/or LED becomes expectation, and depends on that the light of this scatterer reception and the described scatterer of lamp emission pattern of expectation can comprise many different shape and size.
Feature according to the embodiment of phosphor bearing part of the present invention can be, comprises transition material and hot light conducting emissive material, but is appreciated that and also can arranges and be not heat conducting phosphor bearing part.Light-emitting material can be transparent to the light that sends from light source 58 and transition material should be to absorb the light of the wavelength that comes from light source and the type of again launching different wave length.In the embodiment that shows, hot light conducting emissive material comprises that bearing part layer 64 and transition material are included in the phosphor layer 66 on the phosphor bearing part.As describing further hereinafter, different embodiments can comprise the many different setting of hot light conducting emissive material and transition material.
When the light that comes from light source 58 is absorbed by the phosphor in the phosphor layer 66, described light on isotropic direction again the emission, wherein about 50% light launch forward and 50% backward the emission enter in the chamber 54.In having the existing LED of conformal phosphor layers, a large portion of light of emission may be rearwardly guided and enter among the LED and possibility that light is escaped is limited by the extraction efficiency of LED structure backward.For some LED, extraction efficiency can be about 70%, and therefore being directed into backward the light of the certain percentage the LED from transition material may loss.In lamp according to the present invention, wherein this light fixture has remote phosphor structure and LED on the platform 56 at the place, bottom in chamber 54, surface rather than the LED of the backward phosphor light impact cavity of higher percentage.Improved the percentage that reflects back into the light in the phosphor layer 66 with 53 these surfaces of coating, reflecting layer, light can be launched from lamp at the phosphor layer place.These reflecting layer 53 allow optics cavity effectively to recycle photon, and improve the emission effciency of lamp.Be appreciated that the reflecting layer can comprise many different materials and structure, include but not limited to reflective metals or reflection multilayer structure, such as distributed distributed bragg reflector (distributed Bragg reflectors).In not having those embodiments of optics cavity, also can be included in LED reflecting layer on every side.
Bearing part layer 64 can be made by the many different material with 0.5 watt/meter-Kelvin or higher thermal conductivity, such as quartzy, carborundum (SiC) (thermal conductivity~120 watt/meter-Kelvin), glass (thermal conductivity 1.0-1.4 watt/meter-Kelvin) or sapphire (thermal conductivity~40 watt/meter-Kelvin).In other embodiment, bearing part layer 64 can have the thermal conductivity greater than 1.0 watts/meter-Kelvin, and in other embodiment, this bearing part layer can have the thermal conductivity greater than 5.0 watts/meter-Kelvin.In other other embodiment, this bearing part layer can have the thermal conductivity greater than 10 watts/meter-Kelvin.In some embodiments, the bearing part layer can have the thermal conductivity in from 1.4 to 10 watts/meter-Kelvin of scope.The material that depends on use, the phosphor bearing part also can have different thickness, and the thickness range that wherein is fit to is 0.1 millimeter to 10 millimeters or larger.Be appreciated that and depend on for other thickness of the properties of materials of bearing part layer and also can use.Material should be enough thick in enough horizontal heat propagations to be provided for specific condition of work.Usually, the thermal conductivity of material is higher, and material can be thinner and still provides essential heat to distribute.Different factors can affect uses for which kind of bearing part layer material, includes but not limited to cost and for the transparency of light source light.Some materials also can be more suitable for for larger diameter, such as glass or quartz.Then these can be packaged into less bearing part layer with this phosphor layer cutting by the shaping phosphor layer on the bearing part layer of larger diameter and reduce manufacturing cost.In some embodiments, the phosphor bearing part can comprise condensate or plastic material, and wherein phosphor coating is on the inner surface of phosphor bearing part and/or outer surface and/or embed or be blended in condensate or the plastics.
Many different phosphors can be used in the phosphor layer 66, and wherein the present invention is adapted to launch the lamp of white light especially.As describing hereinbefore, in some embodiments, light source 58 can be based on LED's and can launch light in the blue wavelength spectrum.Phosphor layer can absorb some in the blue light and again launch sodium yellow.This allows the blue and yellow photosynthetic white light of lamp emission.In some embodiments, the yellow conversion material conversion that blue LED light can be by commercially available YAG:Ce phosphor, but use by based on (Gd, Y) 3(Al, Ga) 5O 12: the Ce system is (such as Y 3Al 5O 12: the conversion particle that phosphor Ce (YAG)) is made, the wide yellow spectrum emission of gamut is possible.Other yellow phosphor can be for generation of white light when using with the blue emission LED based on following emitter, and described illuminator includes but not limited to:
Tb 3-xRE xO 12: Ce (TAG); RE=Y, Gd, La, Lu; Or
Sr 2-x-yBa xCa ySiO 4:Eu。
Phosphor layer also can arrange the phosphor that has more than a kind of, the described mixing more than a kind of phosphor or with phosphor layer 66 or second phosphor layer of conduct on bearing part layer 64.In some embodiments, each light that can absorb LED light and can again launch different colours in two kinds of phosphors.In these embodiments, the color that comes from two phosphor layers can be mixed the white light (warm white) with the more high color rendering index (CRI) that is used for different white color.This can comprise the above-mentioned light that can mix with the light that comes from red-emitting phosphor that comes from yellow phosphor.Can use different red-emitting phosphors, comprise:
Sr xCa 1-xS:Eu, Y; Y=halide;
CaSiAlN 3: Eu; Or
Sr 2-yCa ySiO 4:Eu。
The phosphor that can use other produces the color emission to be transformed into specific color by will be basically all light.For example, can use following phosphor to produce green light:
SrGa 2S 4:Eu;
Sr 2-yBa ySiO 4: Eu; Or
SrSi 2O 2N 2:Eu。
Hereinafter list some extra suitable phosphors as conversion particle phosphor layer 66, but also can use other phosphor.Every kind of phosphor is presented in exciting in blueness and/or the ultraviolet emission spectrum, and desirable peak emission is provided, and has efficient light conversion, and has acceptable Stokes shift (Stokes shift):
Yellow/green
(Sr,Ca,Ba)(Al,Ga) 2S 4:Eu 2+
Ba 2(Mg,Zn)Si 2O 7:Eu 2+
Gd 0.46Sr 0.31Al 1.23O xF 1.38:Eu 2+ 0.06
(Ba 1-x-ySr xCa y)SiO 4:Eu
Ba 2SiO 4:Eu 2+
Use Ce 3+The Lu that mixes 3Al 5O 12
Use Eu 2+(Ca, Sr, the Ba) Si that mixes 2O 2N 2
CaSc2O4:Ce 3+
(Sr,Ba)2SiO4:Eu 2+
Red
Lu 2O 3:Eu 3+
(Sr 2-xLa x)(Ce 1-xEu x)O 4
Sr 2Ce 1-xEu xO 4
Sr 2-xEu xCeO 4
SrTiO 3:Pr 3+,Ga 3+
CaAlSiN 3:Eu 2+
Sr 2Si 5N 8:Eu 2+
Can use the phosphor particles of different size, include but not limited at the particle of 10 nanometers (nm) to the scope of 30 microns (μ m), or larger.Less particle size typically more large-sized particle better scattering and blend color so that more uniform light to be provided.Larger particle and less Particle Phase than typically more effective aspect the conversion light, but the more inhomogeneous light of emission.In some embodiments, phosphor can be provided in the phosphor layer 66 in the mode of driving fit material (binder), and phosphor also can have different phosphor material concentration or loading in the driving fit material.Typical concentration is by weight in the scope of 30-70%.In one embodiment, it is about 65% that phosphor concentration is by weight, and preferably scatter equably in remote phosphor scope.Phosphor layer 66 also can comprise the zones of different with different transition materials and different transition material concentration.
Different materials can be used for the driving fit material, and wherein these materials are firm after solidifying preferably and are substantial transparent in visible wavelength spectrum.The material that is fit to comprises silicones (silicones), epoxy resin, glass, unorganic glass, dielectric, BCB, polyamide (polymides), condensate (polymers), ethyl cellulose, colloidal sol glass (sol get glass) and their mixture, wherein preferred material is silicones, because its high grade of transparency and the reliability in great power LED.The phenyl and the methyl silicon resin that are fit to can be from Dows Chemistry ( Chemical) buy.The driving fit material can use many different curings to solidify, and this depends on different factors, such as the type of employed driving fit material.Different curings includes but not limited to heating, ultraviolet ray (UV), infrared ray (IR) or air curing.In some embodiments, the driving fit material can comprise polymeric material or plastics.
Phosphor layer 66 can use different processes to apply, include but not limited to spraying, dipping (dip-coating), spin coating, sputter, printing, powder coating, electrophoretic deposition (EPD), electrostatic precipitation, etc.That mentions as mentioned is the same, and phosphor layer 66 can apply with driving fit material material, but is appreciated that the driving fit material is optional.In other other embodiment, phosphor layer 66 can be made independently and then be installed on the bearing part layer 64.
In one embodiment, phosphor-driving fit material mixture can spray above bearing part layer 64 or scatter then that the driving fit material solidifies to form phosphor layer 66.In in these embodiments some, phosphor-driving fit material mixture can spray, pours into a mould or be dispersed on the bearing part layer 64 of heating or the top, so that when phosphor driving fit material mixture contacts with bearing part layer 64, the heat that comes from bearing part layer 64 is scattered in the driving fit material and the driving fit material is solidified.These processes also can be included in the solvent in phosphor-driving fit material mixture, and this solvent can liquefy and reduce the viscosity of mixture, so that mixture is more suitable for spraying.Can use many different solvents, including but not limited to can be from DOW CORNING (Dow ) toluene of buying, stupid, Zi Ni (zylene) or OS-20, and can use different concentration solvents.When solvent-phosphor-driving fit material mixture sprayed or be dispersed on the bearing part layer 64 of heating, the heat that comes from bearing part layer 64 made the solvent evaporation, and wherein how soon the temperature effect solvent of bearing part layer has and evaporate.The driving fit material of the heat that comes from bearing part layer 64 in also can curing mixture, and stay fixing phosphor layer at the bearing part layer.Bearing part layer 64 can be heated to many different temperature, and this depends on the material of use and solvent evaporation and the driving fit material curing rate of expectation.The temperature range that is fit to is 90 to 150 degrees centigrade, but is appreciated that other temperature also can use.
In other other embodiment, phosphor layer 66 can only be coated with the layer of conversion particle, and does not have the driving fit material.The deposition of this stratum granulosum only can realize by static or electrophoretic deposition method, or wherein mix volatility driving fit material or the solvent realization of phosphor particles by use.Then driving fit material or solvent can burn or optionally dissolving and optionally removing by heat.In other other embodiment, phosphor particles can be embedded in the carrier material.In these embodiments, bearing part can comprise glass material (such as soda lime or borosilicate (borosilicate)) or such as the plastic material of Merlon.Various deposition process and system are described for No. 2010/0155763 in the U.S. Patent Application Publication that people, called afters such as belonging to Donofrio " are used for optical material is applied to the system and method (System and Methods for Application of Optical Materials to OpticalElements) of optical element ", and this application also transfers kerry Corp. and is incorporated into this by quoting mode as proof.
Phosphor layer 66 can have many different thickness, this depend at least in part phosphor material concentration and will be by the amount of the expectation of the light of phosphor layer 66 conversion.Phosphor layer 66 can have substantially the same thickness or the thickness of variation, and expectation light color or emission pattern in the far field (far field) can be regulated or change to the thickness of described variation in some embodiments.Converter can comprise the layer of one or more different phosphor materials, the some of them multilayer be arranged in people such as belonging to Hussell, called after " efficient LED lamp (HighEfficiency LED Lamp With Remote Phosphor and Diffuser Configuration) with remote phosphor and scatterer structure ", U.S. Patent application the 13/029th, describe in No. 063, this application also transfers kerry Corp. and is incorporated into this to quote mode as proof.
Be appreciated that in phosphor layer 66 He in the bearing part layer 64 to comprise various additives, or in the two, all comprise, equably or optionally to regulate or to change emission color in the far field or intensity to produce the emission characteristic of expectation.Can use many different additives, include but not limited to titanium dioxide (TiO 2), aluminium oxide (Al 2O 3), barium sulfate (BaSO 4).
Can apply to be higher than 30% concentration level (phosphor loading) according to phosphor layer of the present invention.Other embodiment can have and is higher than 50% concentration level, and concentration level can be to be higher than 60% in other other embodiment.Phosphor layer can have the thickness in 10 to 100 microns scope in some embodiments, and phosphor layer can have thickness in 40 to 50 microns scope in other embodiment.In other other embodiment, phosphor layer can comprise have different phosphor concentration, the different phosphorescence scale of construction or the zone of heterogeneity (causing different transfer characteristics).
The method of describing hereinbefore can use known technology to apply in the zones of different of bearing part layer in order to identical a plurality of layers and the different phosphor materials that applies different phosphor materials, such as the mask process.Other embodiment can comprise the uniform and/or heterogeneous distribution of phosphor in the phosphor bearing part, such as have different phosphor layer thickness and/or different phosphor material concentration along bearing part.A plurality of zones that can have the dissimilar phosphor that can launch identical or different color of light are such as the isolated area with different phosphors.During these are arranged some can give the outward appearance of phosphor bearing part patterning, and wherein some in these patterns include but not limited to striped, point-like, criss-cross, the pattern of z shape or any combination of these patterns.In other other embodiment, can there be a plurality of phosphors (for example, a plurality of domes) that remotely separate that may have dissimilar phosphor materials.In these remote phosphors each can have one or more phosphors that can arrange in the multiple different mode of above describing.
Above-described method provides certain THICKNESS CONTROL for phosphor layer 66, but for larger THICKNESS CONTROL, phosphor layer can use known method to grind to reduce the thickness of phosphor layer 66 or make the thickness on the whole layer smooth.This abrasive characteristic provides extra advantage, namely can be created in the lamp of emission in the single level (bin) on the cie color curve map.Classification (Binning) is normally known and be intended to guarantee to organize the LED that provides or lamp and be transmitted in light in the acceptable color gamut in the art.LED or lamp can be tested and be categorized in the different levels by color or brightness, are commonly referred in the art classification (binning).Each grade typically comprises the LED that comes from a color and brightness group or lamp and typically identifies by binary code.White light emission LED or lamp can pass through colourity (color) and luminous flux (brightness) classification.By the amount of control by the light source light of phosphor layer conversion, the THICKNESS CONTROL of phosphor layer provides larger control aspect producing the lamp of launching the light in the target level.A plurality of phosphor bearing parts 62 of the phosphor layer 66 with same thickness can be provided.By the light source 58 that use has substantially the same emission characteristics, lamp can manufacture has almost identical emission characteristics, and these identical emission characteristics can drop in the single level in some cases.In some embodiments, lamp emission drops in the standard deviation of a point on the CIE figure, and in some embodiments, standard deviation comprises less than 10 rank MacAdam's ellipses.In some embodiments, the emission of lamp falls into the center at CIExy(0.313,0.323) in the 4 rank MacAdam's ellipse of locating.
In other other embodiment, phosphor bearing part 62 can comprise that reflectivity or scattering material or element are with the control emission intensity plot.These materials or element can be integrated in the phosphor bearing part, such as by coming molding or coating with one in the describing method above.In other other embodiment, reflectivity or scattering element can construct discretely and be attached on the phosphor bearing part.In these materials and the element some can be opaque or partly opaque, and other some can be (Lang Baiman) reflection or scattering in nature.
Phosphor bearing part 62 can use different known methods or material (such as heat conduction jointing material or hot grease) to install and be bonded in the top of the opening in the chamber 54.Conventional thermal conductive grease can comprise ceramic material, such as beryllium oxide and aluminium nitride or such as the metallic particles of collargol.In other embodiment, the phosphor bearing part can use heat conducting device to be installed in the top of opening, and described heat conducting device remains on the heat spreader structures heat adhesive with the maximization thermal conductivity securely such as clamping device, screw or with phosphor bearing part 62.In one embodiment, the hot grease layer uses and has about 100 microns thickness and k=0.2 watt/meter-Kelvin's thermal conductivity.This is arranged as from phosphor layer 66 loses heat efficient heat conduction path is provided.Mention as mentioned like that, can provide the different lamp embodiment that does not have the chamber, and the phosphor bearing part can be to install except the many different mode leading to above the opening in chamber.
At the duration of work of lamp 50, phosphor converted heating concentrates in the phosphor layer 66, such as in phosphor layer 66 in the heart, the major part of LED light bump and pass phosphor bearing part 62 herein.The heat conduction property of bearing part layer 64 is laterally scattered this heat towards the edge of phosphor bearing part 62, as showing by the first hot-fluid 70.Heat is passed the hot grease layer and is entered in the heat spreader structures 52 there, as showing by the second hot-fluid 72, can effectively distribute in the entered environment in heat described in the described heat spreader structures.
As discussed above the same, platform 56 and heat spreader structures 52 can thermally coupled or couplings in lamp 50.This coupled arrangement causes phosphor bearing part 62 and that light source 58 to share at least in part the heat conduction path that is used for loses heat.The heat (as showing by the 3rd hot-fluid 74) of passing platform 56 from light source 58 also can spread to heat spreader structures 52.The heat that flows to heat spreader structures 52 from phosphor bearing part 62 also can flow to the platform 56.In other embodiment, phosphor bearing part 62 and light source 58 can have the independent heat conduction path that is used for loses heat, and wherein these independent paths are called " separation ".
Be appreciated that the embodiment in being presented at Fig. 4 that the phosphor bearing part can be arranged in many different modes.Phosphor layer can be on any surface of bearing part layer or can mix with the bearing part layer.The phosphor bearing part also can comprise scattering layer, and this scattering layer can be included on phosphor layer or the bearing part layer or with phosphor layer or bearing part layer and mix.Be appreciated that also phosphor and scattering layer can cover the zone less than the surface of bearing part layer, and conversion layer can have different concentration with scattering layer in different zones in some embodiments.Be appreciated that also the phosphor bearing part can have the surface of different roughness or shape to strengthen the emission by the phosphor bearing part.
That mentions as mentioned is the same, and scatterer 75 is arranged to the light scattering from phosphor bearing part and LED is become the lamp emission pattern of expectation, and can have many different shape and size.In some embodiments, scatterer also can be arranged in and cover the phosphor bearing part when does not launch with convenient lamp phosphor bearing part top.Scatterer can have provides the basically material of white appearance, and the outward appearance of white is provided to bulb when not launching with convenient lamp.
Many different scatterer with different shapes and characteristic can use with lamp 50 and the lamp of describing hereinafter, such as the U.S. Provisional Patent Application the 61/339th that is to submit on March 3rd, 2010, be called " the LED lamp (LED Lamp With Remote Phosphor andDiffuser Configuration) with remote phosphor and scatterer structure ", those lamps of describing in No. 515, this application is incorporated into this to quote mode as proof.Scatterer also can take different shapes, include but not limited to " short and stout shape (squat) " that general tree claims, as be to submit on October 8th, 2010, the U.S. Patent application the 12/901st of " light scattering being become the nonisotropic scattering device (Non-uniform Diffuser toScatter Light Into Uniform Emission Pattern) of uniform emission pattern " by name, as described in 405, this application is incorporated into this to quote mode as proof.
Except those features of describing hereinbefore, can comprise many different features according to lamp of the present invention.Refer again to Fig. 4, in having those lamp embodiments in chamber 54, can fill described chamber with the transparent heat conductive material and distribute for the heat of lamp with further raising.The chamber conductive material can be provided for from the secondary path of light source 58 loses heat.The heat that comes from light source will still through platform 56 conduction, arrive heat spreader structures 52 but also can pass through cavity material.This will allow to have lower operating temperature for light source 58, but the danger that appearance has the operating temperature of rising for phosphor bearing part 62.This layout can be used in many different embodiments, but especially applicable to compare the lamp with higher light source works temperature with the operating temperature of phosphor bearing part.In the admissible application of extra heating of phosphor bearing part layer, this is arranged and allows heat more effectively to propagate from light source therein.
As discussed above the same, different lamp embodiment according to the present invention can be furnished with many dissimilar light sources.In one embodiment, can use eight or nine LED, these LED are connected in series to circuit board with two wires.Then wire can be connected to the supply of electric power device unit of describing hereinbefore.In other embodiment, can use the LED greater or less than eight or nine, that mentions in as mentioned is the same, can use the LED that can buy from kerry Corp., comprises eight XP-E LED or four XP-G LED.Different single-string LED circuit is belonging to the people such as van de Ven, the U.S. Patent application the 12/566th of " the color control (Color Control of Single String Light Emitting Devices HavingSingle String Color Control) with single string light-emitting device of single string color control " by name, describe in No. 195, and belonging to the people such as van de Ven, the U.S. Patent application the 12/704th of " solid luminous device and method of operating (Solid State Lighting Apparatus with Compensation Bypass Circuitsand Method of Operation Thereof) thereof with compensation bypass resistance " by name, describe in 730, these two applications all are incorporated into this to quote mode as proof.
Fig. 5 has shown another embodiment according to lamp 100 of the present invention, and this lamp is included in the optics cavity 102 in the heat spreader structures 105.As embodiment above, lamp 100 also can be arranged to not have the lamp chamber, and wherein LED is installed on the surface of radiator 105 or has on difform three-dimensional structure or the base construction.Light source 104 based on planar LED is installed to platform 106, and phosphor bearing part 108 is installed to the open top in chamber 102, and wherein phosphor bearing part 108 has any feature in those features of above describing.In the embodiment that shows, phosphor bearing part 108 can be flat disc shape (for example, remote two-dimensional wavelength conversion element) and comprise heat conduction transparent material and phosphor layer.Described phosphor bearing part can be installed to described chamber with heat conducting material or the device of as mentioned middle description.Chamber 102 can have reflecting surface and improve emission effciency as described in as mentioned.
From the light process phosphor bearing part 108 of light source 104, at described phosphor bearing part place, the part of described light becomes different wave length by the phosphor converted in the phosphor bearing part 108.In one embodiment, light source 104 can comprise that blue emission LED and phosphor bearing part 108 can comprise yellow phosphor, and this yellow phosphor absorbs the part of blue light and again launches sodium yellow as described in as mentioned.The white light of lamp 100 emitting LED light and the combination of yellow phosphor light.As above, light source 104 also can comprise the many different LED of the light of launching different colours and the phosphor that the phosphor bearing part can comprise other have colour temperature and the repeatability of expectation with generation light.
Lamp 100 also comprises the shaping scatterer dome 110 that is installed in 102 tops, chamber, this scatterer dome comprise the diffusion or scattering particles, such as list hereinbefore those.Scattering particles can be arranged in the curable driving fit material, and this curable driving fit material forms with the dome of common shape.In the embodiment that shows, dome 110 is installed to heat spreader structures 105 and has enlarged at the place, end relative with heat spreader structures 105.Discuss as mentioned that works uses different driving fit material materials, such as silicones, epoxy resin, glass, unorganic glass, dielectric, BCB, polyamide, plastics, condensate and their mixture.In some embodiments, white scattering particles can be in the dome with white color uses, and this white color has been hidden the color of the phosphor in the phosphor bearing part 108 in the optics cavity.This provides white outward appearance for whole lamp 100, and this white appearance is compared normally more visually-acceptable or attractive for consumers with the color of phosphor.In one embodiment, scatterer can comprise white titanium dioxide granule, and described white titanium dioxide granule can provide for scatterer dome 110 its whole white appearance.
Scatterer dome 110 can provide additional advantage, namely scatters the light that sends with more uniform pattern from optics cavity.Discuss as mentioned, the light that comes from the light source in the optics cavity can cause light to be launched from dome with more omnidirectional emission pattern with the scattering nature of scattering particles with the shape of general Lang Baiman pattern emission and dome 110.Designed dome can have in different zones for the scattering particles of different concentration or can be shaped for specific emission pattern.
In the U.S., united the Energy Star of implementation by Environmental Protection Agency USA and USDOE Standard for integrated LED lamp has been promulgated in plan, for the measuring technique of color and even angle in Energy Star Describe in the requirements of plan, described requirements of plan is the mode combination by quoting as proof hereinbefore.For vertically-oriented lamp, luminous intensity is measured in the perpendicular that becomes 45 and 90 degree with initial plane.For the whole 0-135 degree zone of lamp, luminous intensity should not surpass 20% with the mean intensity deviation, and wherein zero degree is defined as the top of case.In addition, come from lamp total flux 5% should be in 135-180 degree zone.
In some embodiments, be included in those that hereinafter describe, dome can be designed so that the emission pattern that comes from lamp meets the Energy Star for integrated LED lamp of revising on March 22nd, 2010 The omni-directional transmissions standard of requirements of plan, this emission standard is incorporated into this to quote mode as proof.In this article, a requirement of this standard of satisfying of lamp be emission uniformity from 0 to 135 degree visual angle must be mean value 20% in.Another requirement be come from the total flux of lamp greater than 5% must 135 to 180 the degree emitting areas in launch, wherein measure 0,45,90 the degree azimuths carry out.That mentions as mentioned is the same, and the different lamp embodiment of describing in this article also can comprise and satisfies Energy Star The A type of standard (for example, A19) remodeling LED bulb.The invention provides efficient, reliable and cost-effective lamp.In some embodiments, can comprise can be rapidly and five parts of assembling easily for whole lamp.
As embodiment above, lamp 100 can comprise the installing mechanism 112 that is connected to radiator 105, and described installing mechanism is for being fit to the type of conventional electrical outlets.In the embodiment that shows, lamp 100 comprises be used to the threaded portion 112 that is installed to standard Edison socket.As embodiment above, lamp 100 can comprise that standard plug and electrical outlets can be the reference power supply sockets, maybe can comprise the GU24 base unit, perhaps described plug can be that clip and electrical outlets can be the sockets (for example, as used in many fluorescent lamps) of admittance and this clip of clamping.Heat spreader structures also can comprise inner chamber or keep the housing of supply of electric power device described above or power conversion unit parts.
As mentioned above the same, the space between some features of lamp 100 can be considered to mixing chamber, and wherein the space between light source 106 and the phosphor bearing part 108 comprises the first light mixing chamber.Space between phosphor bearing part 108 and the scatterer 110 can comprise the second light mixing chamber, and wherein this mixing chamber promotes uniform color and the intensity emission of lamp.Identical mode can be applied in the embodiment that hereinafter has difform phosphor bearing part and scatterer.In other embodiment, can comprise extra scatterer and/or phosphor bearing part, thereby form extra mixing chamber, and scatterer and/or phosphor bearing part can be with different being disposed in order.
Different lamp embodiments according to the present invention can have many different shape and size.Fig. 6 has shown another embodiment according to lamp 120 of the present invention, and the lamp of this embodiment and lamp 100 are similar and be included in similarly optics cavity 122 in the heat spreader structures 125, and wherein light source 124 is installed to the platform 126 in the optics cavity 122.As above, heat spreader structures does not need to have optics cavity, and light source can be arranged on other structures except heat spreader structures.These structures can comprise plane surface or the pedestal with light source.The thermally coupled top that is installed in the chamber opening of phosphor bearing part 128 usefulness.The top that lamp 120 also is included in optics cavity is installed to the scatterer dome 130 on the heat spreader structures 125.Scatterer dome 130 can be made by the material identical with the scatterer of above describing, but in this embodiment dome 130 be spherical, ellipse or egg type so that different lamp emission patterns to be provided, and still cover simultaneously the color that comes from the phosphor in the phosphor bearing part 128.
Be appreciated that in other lamp embodiment, the phosphor bearing part can adopt many different shapes, comprises different 3D shapes.The three-dimensional meaning of term refers to except as is presented at any shape the plane in above the embodiment.Fig. 7 to Figure 10 has shown the different embodiment according to three-dimensional phosphor bearing part of the present invention, but is appreciated that these embodiments also can adopt many other shapes.Discuss as mentioned, when phosphor absorbs and again during utilizing emitted light, light is launched again in isotropic mode, so that the light that three-dimensional phosphor bearing part is used for changing and also scattering comes from light source.As the scatterer of above describing, difform three-dimensional bearing part layer can come utilizing emitted light with the emission pattern with different qualities, and this part ground depends on the emission pattern of light source.Then scatterer can mate to provide with the emission of phosphor bearing part the lamp emission pattern of expectation.
Fig. 7 has shown hemispherical phosphor bearing part 154, and this hemispherical phosphor bearing part comprises hemispherical bearing part 155 and phosphor layer 156.Hemispherical bearing part 155 can be made by the material identical with the bearing part layer of above describing, and phosphor layer can be made by the material identical with the phosphor layer of above describing, and scattering particles being included in bearing part and the phosphor layer described in can be as mentioned.
Phosphor layer 156 shows and is positioned on the outer surface of bearing part 155 in this embodiment, but be appreciated that phosphor layer can be on the internal layer of bearing part layer, mix with bearing part, perhaps be any combination of this three.In some embodiments, make phosphor layer on the outer surface can minimize launch loss.When emitter light was absorbed by phosphor layer 156, some in the ground emission of described emitter light omnirange and the light can be launched backward and be absorbed by the modulation element such as LED.Phosphor layer 156 also can have the refractive index different from hemispherical bearing part 155, so that the light of launching forward from phosphor layer can be returned from the internal surface reflection of bearing part 155.Because this light of absorption of modulation element also may loss.For the situation of phosphor layer 156 on the outer surface of bearing part 155, forward the light of emission do not need through bearing part 155 and will be not can loss in reflection.The light top that will run into bearing part of emission backward, here at least some of light will reflect back.This layout causes coming from the light that the backward emission of phosphorescent layer 156 enters in the bearing part (light can be absorbed in bearing part) and reduces.
Phosphor layer 156 can use many identical method depositions of above describing.The 3D shape of bearing part 155 may need extra step or other process so that essential coverage to be provided in some cases.In some embodiments, wherein solvent-phosphor-driving fit material mixture is sprayed, and bearing part can be as mentioned as described in heating, and a plurality of spreader nozzle can be providing the coverage of expectation at bearing part, such as near uniform coverage.In other embodiment, can use still less the nozzle that sprays and rotate simultaneously bearing part so that the coverage of expectation to be provided.As above, the heat that comes from bearing part 155 can make the solvent evaporation and help to solidify the driving fit material.
In other other embodiment, phosphor layer can form by the reproduction process, and phosphor layer can be formed on the interior or outer surface of bearing part 155 thus, but phosphor layer is applicable to being formed on the inner surface especially.Bearing part 155 can be filled at least in part with phosphor blends, and perhaps in other cases so that described bearing part contacts with phosphor blends, wherein said phosphor blends adheres to the surface of bearing part.Then mixture can discharge from bearing part, stays from the teeth outwards the phosphor blends layer, and then this phosphor blends layer can solidify.In one embodiment, mixture can comprise polyethylene glycol oxide (PEO) and phosphor.Bearing part can be filled and be then emptying, stays polyethylene glycol oxide-phosphor blends layer, and this polyethylene glycol oxide-phosphor blends then can heat cure.Polyethylene glycol oxide is by thermal evaporation or disperse, and stays phosphor layer.In some embodiments, can apply the driving fit material with further fixing phosphor layer, and phosphor can keep and not have a driving fit material in other embodiment.
As in order to the process of the bearing part layer that applies the plane, these processes can be used in the three-dimensional bearing part to apply a plurality of phosphor layers that can have identical or different phosphor materials.Phosphor layer also can be applied to the inboard of bearing part and the outside on the two, and can have have the dissimilar of different-thickness in the zones of different of bearing part.In other other embodiment, can use different processes, such as with can hot forming the thin plate coating bearing part of phosphor material to the bearing part.
In using the lamp of bearing part 155, the base portion that emitter can be arranged in bearing part is sentenced so that come from the light of emitter and upwards launch and pass bearing part 155.Emitter can be with general Lang Baiman pattern utilizing emitted light in some embodiments, and bearing part can help with more uniform this light of pattern scattering.
Fig. 8 has shown another embodiment according to three-dimensional phosphor bearing part 157 of the present invention, comprises bullet shaped bearing part 158 and the phosphor layer on the outer surface of this bearing part 159.Bearing part 158 can use with above-described identical method with phosphor layer 159 and be formed by identical material.The lamp emission pattern of the expectation that the phosphor bearing part that different modes is shaped can use from different emitters to provide whole together.Fig. 9 has shown another embodiment according to three-dimensional phosphor bearing part 160 of the present invention, and it comprises spherical bearings 161 and the phosphor layer on the outer surface of this bearing part 162.Bearing part 161 can use with above-described identical method with phosphor layer 162 and be formed by identical material.
Figure 10 has shown according to another implementation of the invention phosphor bearing part 163, and it has substantially spherical bearing part 164, and this bearing part has narrow neck 164.As embodiment above, phosphor bearing part 164 is included in the phosphor layer 166 on the outer surface of bearing part 164, and this phosphor layer 166 is by making and use identical method to form with the identical material of above describing.In some embodiments, have with the phosphor bearing part of bearing part 164 similar shapes switching emission body light and with the light that comes from light source of Lang Baiman pattern again launch into more uniform emission pattern aspect can be more effective.
Figure 11 to Figure 13 has shown another embodiment according to lamp 170 of the present invention, and the light fixture of this embodiment has heat spreader structures 172, optics cavity 174, light source 176, scatterer dome 178 and threaded portion 180.These features can be used the method identical with the similar characteristics of above describing and be made by identical material.This embodiment for example also comprises three-dimensional Wavelength changing element 182(, comprises the phosphor bearing part of heat conduction transparent material and at least one phosphor layer).Depend on embodiment, Wavelength changing element is included in inside, the outside of phosphor bearing part and/or is embedded in the interior phosphor layer (or a plurality of phosphor layer) of phosphor bearing part.In this embodiment, Wavelength changing element is (for example, to be installed on the heat spreader structures 172) on the heat spreader structures 172 and thermal coupling or be connected to described heat spreader structures.In other embodiment, electrical insulation parts (not demonstrating) can be between heat spreader structures and Wavelength changing element, and Wavelength changing element can keep by electrical insulation parts.Electrical insulation parts for example can be included in light source 176(, and LED) opening (or a plurality of opening) of top to be to allow light to pass, and radiator cover structure 172 is shocked by electricity preventing simultaneously.In some embodiments, electrical insulation parts also can be used as reflector.In this embodiment, phosphor bearing part 182 is spherical or spheric and emitter is arranged so that the light that comes from light source passes phosphor bearing part 182, and at least some of light are changed at described phosphor bearing part place.
The 3D shape of phosphor bearing part 182 provides the natural separation between it and light source 176.Therefore, light source 176 is not installed in the groove that forms optics cavity in the radiator.On the contrary, in this embodiment, light source 176 is installed on the top surface of heat spreader structures 172, and wherein the space of optics cavity 174 between the top of phosphor bearing part 182 and heat spreader structures 172 forms.This layout can allow the less Lang Baiman emission from optics cavity 174, because do not have the optics cavity side surface to stop and redirected side emission.In other embodiment, light source 176 is on installation elements (not demonstrating), other elements that are mounted thereon such as printed circuit board (PCB), metal core board or light source.In some embodiments, installation elements can comprise other electronic device (such as compensation and/or control circuit (not demonstrating)), and is thermally coupled to heat spreader structures 172.Compensation and/or control circuit can comprise microprocessor, special IC or be electrically coupled to supply of electric power device unit and other treatment circuits of light source 176.In some embodiments, control circuit or its part can be positioned at the radiator chamber/housing with supply of electric power device unit, and/or are installed on the surface relative with LED of installation elements.Compensation and/or control circuit can comprise as belonging to the people such as van de Ven, the U.S. Patent application the 12/566th of " the color control (Color Controlof Single String Light Emitting Device Having Single String Color Control) with single string light-emitting device of single string color control " by name, No. 195, and belong to the people such as van de Ven, the U.S. Patent application the 12/704th of " solid luminous device and method of operating (Solid State LightingApparatus with Compensation Bypass Circuits and Methods of OperationThereof) thereof with compensation bypass circuit " by name, the circuit of describing in 730, these two applications are all introduced by the mode of quoting as proof hereinbefore.
In some embodiments of lamp 170, use to be used for the blue emission LED of light source 176 and in yellow and the red-emitting phosphor combination of phosphor bearing part.It is yellow or orange that this can cause phosphor bearing part 182 to be rendered as, and scatterer dome 178 is covered the emission pattern that this color becomes light scattering expectation simultaneously.In lamp 170, the conducting path that is used for platform and heat spreader structures is coupled, but is appreciated that they can be uncoupled in other embodiment.
Figure 14 has shown an embodiment according to lamp 190 of the present invention, is installed in eight led light sources 192 on the radiator 194 as described in comprising as mentioned.Emitter can comprise the many dissimilar LED that can many different modes be coupled to together, and these LED are connected in series in the embodiment that shows.Notice that emitter is not installed in the optics cavity in this embodiment, and be mounted on the top planes surface of radiator 194.Figure 15 has shown the lamp 190 that is presented among Figure 14, and wherein spherical phosphor bearing part 196 is installed in the top of the light source 192 that is presented among Figure 14.Be presented among Figure 15 lamp 190 can with as mentioned as described in scatterer 198 make up to form and have the photoemissive lamp of scattering.
That mentions as mentioned is such, and the phosphor bearing part can comprise a plurality of transition materials, such as yellow/green and red-emitting phosphor.These phosphors can be provided for the yellow/green light component of white light emission.But in different embodiments, these light components can directly provide from led chip rather than by phosphor converted.These different layouts can provide specific advantage, include but not limited to require to hang down the lamp of operating power and can be more cheap by eliminating the demand of specific phosphors.In other embodiment, some of these color components can be directly provide from the led chip of different colors.For example, the red component of emission can directly provide from red emission LED, this red emission LED is as in the U.S. Provisional Patent Application the 61/424th that belongs to the people such as Yuan, " using the LED lamp with remote phosphor and scatterer structure (LED Lamp WithRemote Phosphor and Diffuser Configuration Utilizing Red Emitters) of red emitters " by name, as described in 670, this application is here introduced by the mode of quoting as proof.
Figure 16 and Figure 17 have shown another embodiment according to lamp 250 of the present invention, this embodiment is submitted to being on March 3rd, 2010, the U.S. Provisional Patent Application the 61/339th of " the LED lamp (Lamp With Remote Phosphor and Diffuser Configuration) with remote phosphor and scatterer structure " by name, No. 515, and submit on October 8th, 2010, " light scattering being become the nonisotropic scattering device (Non-uniform Diffuser toScatter Light Into Uniform Emission Pattern) of uniform emission pattern " by name, U.S. Patent application the 12/901st, show in No. 405 and describe those are similar, these two temporary patent applications are all here introduced by the mode of quoting as proof.
Lamp 250 comprises radiator 252, has phosphor bearing part 254 and the dome shape scatterer 256 that can use the dome shape of being made by identical material with the identical method of above describing.This lamp also comprises LED 258, and described LED is installed on the plane surface 259 of radiator 252 in this embodiment, and wherein phosphor bearing part and scatterer are above led chip 258.Led chip 258 and phosphor bearing part 254 can comprise above in the layout described and the characteristic any having red and blue emission led chip such as some embodiments.The phosphor bearing part can comprise one or more in the phosphor material of above describing, but preferably includes the phosphor that absorbs blue light and emission sodium yellow, so that the lamp emission is blue, red and the white light of yellow combination.
Lamp 250 can comprise the installing mechanism 259 of the type that is fit to conventional electrical outlets.In the embodiment that shows, lamp 250 comprises for the threaded portion 260 that is installed to standard Edison socket.As embodiment above, lamp 250 can comprise that standard plug and electrical outlets can be the reference power supply sockets, maybe can comprise the GU24 base unit, or standard plug can be that clip and electrical outlets can be the socket of admitting and keep this clip (for example, as being used in many fluorescent lamps).
Supply of electric power or power conversion unit as described in can comprising as mentioned according to lamp of the present invention, this supply of electric power or power conversion unit can be arranged in the radiator interior chamber or housing.As mentioned in the above the same, these parts can comprise that driver is to allow bulb with ac line voltage/electric current operation and the light source adjustment capability is provided.In some embodiments, the supply of electric power device can comprise the off-line constant current led driver that uses non-isolation quasi-resonance flyback topology.Led driver can be assemblied in the lamp 250, such as being assemblied in the main part 262.In some embodiments, the supply of electric power device can be nonadjustable, but relatively low cost.Be appreciated that used supply of electric power utensil has many different topologys or geometry and can arrange in many different modes.
Different lamp parts can have many different shapes and can arrange in many different modes.Especially, radiator can arrange to meet the desired in many different modes the emission characteristics of size, heat management characteristic and expectation.As being presented among Fig. 3, can be used for the standard-sized relatively special and restricted case of A19 and can cause limited selection for difformity and the size of radiator.Allow it to satisfy specific emission characteristics (such as the Energy Star of describing in as mentioned for having The feature of plan) LED lamp, especially this situation.
Figure 18 has shown the embodiment of basis according to the scatterer 300 of radiator of the present invention, and this radiator can make LED, phosphor bearing part and scatterer dome be installed on it to form lamp.Radiator 300 can be by making with identical heat conducting material discussed above.Radiator 300 can use in many different lamps, cooperates the requirement of A19 case but will be designed and sized to especially, has simultaneously angled surface, and this angled surface allows lamp to be transmitted in Energy Star Light in the launch requirements.
Radiator 300 can have the core/housing 302 of cylindricality to hold the power control unit of above describing.Radiator also can have fin 304, and described heat sink design is for heat is left from the hot producing component conduction of lamp, such as LED, power electronic devices etc.Fin 304 can have many different shape and size and can be made by the multiple material in the heat conducting material of above describing.Also can have the fin 304 of many varying numbers in different embodiments, the some of them embodiment has the fin between 20 and 60.Other embodiment can have 30 to 50 fin, and other embodiment can have 35 to 40 fin.In one embodiment, radiator 452 can have about 38 fin.The quantity of fin 304 can reduce, but this can cause reducing in the correspondence in order to the surface area of loses heat.When the fin that uses still less, can use larger fin, but this may cause the light of unacceptable amount to be stopped by fin maybe may causing fin to be fallen outside the A19 case.
Fin 304 can each all have substantially the same shape, but fin can have different shapes in other embodiment.In the fin 304 each can have bottom part 306, and the size of described bottom part and angle design are the center away from radiator 304, has in the angle part with the centre that allows radiator to be assemblied in the A19 case.In the embodiment that shows, bottom part 306 becomes the angles angles of 60 degree (or become with horizontal line) of about 150 degree with vertical curve, is appreciated that still fin can have many other angles.Especially, the bottom part can have the fin that becomes with vertical curve greater than the angles of 150 degree.The top section 308 of radiator can be angled towards the center of radiator 300 backward, and wherein this angle is selected according to the emission characteristics of expectation.In some embodiments, use the lamp of this radiator can be arranged to launch the satisfied as mentioned middle Energy Star of describing The light of emission characteristics.Especially and as further describing hereinafter, top section 308 can be angled in case can not stop too many on downward direction the light from the lamp emission, still be provided for the expectation surface area that heat is distributed simultaneously.
Figure 19 to Figure 22 has shown an embodiment according to lamp 450 of the present invention, and this lamp uses the radiator 452 that has with fin 453 like the cooling fins that is presented among Figure 18.The internal part of lamp 450 shows in Figure 20 and Figure 21 best.As embodiment above, lamp 450 comprises dome shape phosphor bearing part 454 and dome shape scatterer 456.This lamp also comprises LED458, and described LED is installed on the plane surface of radiator 452 in this embodiment, and wherein phosphor bearing part and scatterer 454,456 are above LED 458.Other LED lamps are such as described here, and led chip 458, scatterer 456 and phosphor bearing part 454 can comprise any shape, layout and the characteristic of above describing, and have red and blue emission led chip such as some embodiments.Phosphor bearing part 454 can comprise one or more in the phosphor material of above describing, and some embodiments comprise the phosphor that absorbs blue light and emission sodium yellow so that the lamp emission is blue, red and the white light of yellow combination.
Lamp 450 can comprise the installing mechanism of the type that is fit to conventional electrical outlets, such as the threaded portion 460 that is used for precession standard Edison socket, and comprises the replacement installing mechanism of above mentioning.Dome shape scatterer can be many different shape and size, and in the embodiment that shows, be " short and stout shape ", and describe in the scatterer that in different sections, can have varying number, No. the 12/901st, 405, the U.S. Patent application of both introducing hereinbefore.
LED 458 uses conventional installation method to be installed on the printed circuit board (PCB) 462, wherein printed circuit board (PCB) 462 uses mounting screw 466 to be installed to radiator platform 464, and described mounting screw passes printed circuit board (PCB) 462 and rotates in the screwed hole 467 that enters in the radiator platform 464.Be appreciated that many other embodiments can use different installation methods and mechanism.Phosphor bearing part 454 also is installed to platform 464 and above LED 458, passes phosphor bearing part 454 so that come from the light of LED.Conduit 468 arranges that around platform 464 wherein the lower limb of radiator dome 456 is placed in the conduit 468.Phosphor bearing part 454 and scatterer dome 456 can use known mounting material and method to install in place.In this embodiment, the scatterer dome is placed in the conduit 468 below LED 458, and Wavelength changing element 454 is placed in the conduit 473 of LED 458 tops.Depend on embodiment, the relative installation of the top surface of Wavelength changing element 454, scatterer dome 458, LED 458 and/or radiator 452 can change.
By conduit 468 is provided, scatterer dome 456 can be in lower disposed in radiator 452.This can provide many advantages.This can cause overlapping to promote heat to distribute between scatterer dome 456 and the radiator fin 453.This layout can allow scatterer dome 456 for lower and also the auxiliary lamp 450 that allows in the length of expectation, assemble, such as those layouts that are provided in the A19 case.This lower limb that also causes scatterer dome 456 is below the lower limb of phosphor bearing part 454, so that the phosphor bearing part raises in fact in this scatterer dome 456.Place at this center with phosphor bearing part 454 more close scatterer domes 456, and described scatterer dome can promote the even distribution from lamp 450.The factor with physical constraints that can have the distance that can raise with respect to scatterer dome 456 to phosphor bearing part 454.For example, ground is too near scatterer dome 456 if phosphor bearing part 454 raises, and the sodium yellow that comes from phosphor bearing part 454 can be visible by scatterer dome 456.This does not allow the people like for some lamp users on may be aesthetic.In different embodiments, phosphor bearing part 454 can be with respect to the different amount of scatterer dome 456 risings.In some embodiments, the lower limb of phosphor ball cover can raise between 0 and 30 millimeter, and in other embodiment, described lower limb can raise in 5 to 15 millimeters scope.Can raise about 10 millimeters at lower limb described in other other the embodiment.
Lamp 450 also is arranged through falling of specific industry and the test of breaking.Printed circuit board (PCB) 462 can comprise electric conductor, trace or parts, may cause the danger of shocking by electricity if these elements expose.In order to satisfy these tests of breaking, lamp 450 can be arranged so that if there are not the exposed component that can cause shock hazard in scatterer dome 456 and the phosphor bearing part 454 one or both break (such as owing to fall) yet.In order to reduce and/or to prevent that this danger, lamp 450 from comprising the electric insulation layer 470 of the part that covers printed circuit board (PCB) 462.Insulating barrier can be arranged as and cover electric conductor, trace or the electric component that carries the signal of telecommunication.Can use many different insulating materials, include but not limited to different plastics, such as Merlon.Insulating barrier can form and install with lamp in place discretely, in case or printed circuit board (PCB) 462 installs in place then described insulating barrier can directly be formed on the lamp.
Window 472 can be arranged on the insulating barrier 470, and wherein LED 458 is arranged in the window 472 so that layer 470 emission that can not stop from LED.The edge of window 472 can be angled, and described edge provides extra advantage, namely provides to be arranged as upwards to reflect the laterally surface of the LED light of emission towards the phosphor bearing part, and wherein said surface can help useful lamp emission.
Insulating barrier 470 also comprises insulating barrier flange (ledge) or the conduit 473 that is designed and sized to the lower limb that keeps phosphor bearing part 454.Phosphor bearing part 454 can be by placing and being installed on the insulating barrier and being in flange 470 interior being arranged in fast and easily in its desired locations, and wherein described flange is aimed at phosphor bearing part 454 in correct position.Insulating barrier 470 extends in the radiator conduit 468, aims in the conduit 468 of wherein said insulating barrier between the surface of scatterer dome 456 and conduit 468 and is held in place.Insulating barrier 470 also can comprise the second insulating barrier flange or conduit 473 to keep the bottom of scatterer dome 456, and its flange or conduit 473 allow to place rapidly and easily in the tram of scatterer dome 456 above phosphor bearing part 454 and LED 458 and be installed to insulating barrier 470.
Can be arranged as according to the different embodiments of insulating barrier of the present invention provides efficient lamp manufacturing.In some embodiments, insulating barrier 470 can form discretely with lamp 450, and insulating barrier, phosphor bearing part 454 and scatterer dome 456 can be assembled into discretely two dome unit 475(and be presented among Figure 20).Can be rapidly and easily install and be registered to radiator in two domes unit, wherein the second insulating barrier flange or conduit 473 are in heat sink flange 468.Then unit 475 can use known method and material to install in position.By two domes unit 475 of separation is provided, can be arranged so that also that according to lamp of the present invention unit 475 can be removable with removable.In unit 475 faults or damage or other the part (such as printed circuit board (PCB) 462) that allows to enter lamp with the situation of repairing or changing under, this may be desirable especially.The embodiment that is appreciated that other can comprise the separative element that has phosphor bearing part 454 and form discretely the insulating barrier that then is installed to radiator 452.Then scatterer dome 456 can be installed to insulating barrier 470, and is positioned at the top of phosphor bearing part 454.These layouts also can allow these unit to come classification by emission characteristics, with the almost same mode of LED classification.
In some embodiments, electrical insulation parts 470, Wavelength changing element 454 and/or scatterer dome 456 comprise such as fastener (snap) or supporting protuberance and the machinery of recess and coupling or maintaining body, be used as individual unit so that two domes unit 475 can easily put together, for example be clasped.Like this, when manufacturing had the different LED bulb of different optical characteristic, the unit with different optical characteristic can easily replace and/or install.In addition, if the consumer requires different characteristics, then the consumer can change two dome unit 475 at existing LED bulb.In some embodiments, electrical insulation parts 470 can comprise mechanical coupled connection mechanism, and described machinery couples structure so that can be easily and mechanically be installed to the housing of radiator or LED bulb by hand (for example with fastener or supporting protuberance) in two domes unit 475.In these embodiments, these mechanical erections or maintenance feature are described with respect to electrical insulation parts 470, but these features can provide or provide with the electrical insulation parts that does not have electric insulation by the element that separates.Make Wavelength changing element 454 and/or scatterer dome 456 install as a whole or connect together as a unit advantage in the manufacturing can be provided.For example, optical characteristics that can measuring unit, and the unit can be such as classification in the zone of 1931CIE figure.Therefore, the unit can be selected and mate to realize to have the luminescence unit of the optical property of expectation with solid state light emitter, and can allow as one man to make lamp and/or the bulb with identical or similar emission characteristics.This can help to increase the consumer to the satisfaction according to lamp of the present invention.
With reference now to Figure 22,, lamp 450 is shown as the A19 case/profile 476 that has around it, and wherein the size and dimension of lamp 450 is designed to be assemblied in the A19 case 476.Especially, location, the size and dimension of the bottom part 478 of radiator 452 are designed to fill in the angled mid portion 480 that is combined in case.The shape of scatterer dome, radiator and Edison's connector and install to allow lamp being dimensioned to so that the entire length of lamp in the A19 case.
The top part 482 of radiator 452 can have many different angles, and the angle that wherein shows provides the heat management of expectation, still allows to meet simultaneously Energy Star The uniform emission of performance requirement.That is to say that radiator should provide the surface area of expectation with distribute heat, and do not stop the light that sends excess from scatterer dome 456 simultaneously.In the embodiment that shows, angle can be measured from the crosspoint 485 above radiator, and the line 486 that overlaps with angled surface at place, described crosspoint intersects.Article two, the angle between the line 486 can be the unidirectional angle with the fin surface in the part of measurement top.In the embodiment that shows, crosspoint 485 above the minimum point of lamp 450 139 millimeters.This corresponding to have on top between the angle surface 480 about 42 the degree take measurement of an angle.Be appreciated that and use many other angles of measurement, such as 60 degree or less, 50 degree or less and/or 40 degree or less angles.In these different embodiments, intersect at the difference place of coincidence line above radiator 450.In other embodiment, can use different angle measurement methods.
Some embodiments can be wider as feature unlike scatterer dome 456 take radiator 452 further, as showing.This helps lamp 450 to rest in the A19 case further, and still can not stop the light that comes from scatterer dome 456.
That discusses as mentioned is the same, and lamp embodiment according to the present invention can provide and meet Energy Star The emission that requires distributes.Can realize Energy Star The distance that the thickness, fin that the heat spreader structures of light accordance depends on quantity, the fin of fin extends above at the profile (for example, scatterer dome) of emitting surface and fin are with respect to the balance between the angle of the vertical axis of lamp.Still provide simultaneously embodiment for needed enough radiator area of specified L70 life-span for being arranged as the American National Standards Institute nominal contour that meets A type lamp (A19, A21, A23), these parameters can directly affect size, shape, quantity and the position for fin.For example, in the proposition embodiment of fin 453, the distance that fin 453 extends on the profile of emitting surface is larger, fin is larger with respect to the angle of vertical axis, and fin can allow less stopping area (for example possibly, fin still less or thinner fin), this can allow lamp 450 to realize Energy Star Light distributes.The fin embodiment that is appreciated that demonstration and discusses in the accompanying drawings and hereinbefore only is some embodiments that can meet the desired the radiator fin device of lamp emission and dimensional requirement.
Figure 23 and 24 illustrates the relevant geometry of lamp may be on the impact of the emission characteristics of lamp.At first referring to Figure 23, lamp 500 is shown as with the lamp 450 that is presented among Figure 19 to Figure 22 similar, and for identical or similar feature, same numeral above will be for describing this figure.
At first referring to Figure 23, comprise Central Line 502, this Central Line is from the center of phosphor bearing part 454 to the end of fin 453.If light fixture has from the light source that serves as to a greater extent conventional filament of the center emission of lamp, then light will be launched in all directions from the center of lamp, wherein 503 emissions along the Central Line of some in the light.For the light of launching in this mode, the surface area that is increased to the top area of fin 453 will be launched profile to lamp and have slight influence.But as here describing, the phosphor ball cover is more as the volume transmit body, and wherein whole surface is with the mode utilizing emitted light of Lang Baiman roughly.The first triangle 504 illustrates definite ball cover surface area.For below horizontal less than the emission of the angles of 67.5 degree, light may be stopped and downward light distributed to have seldom impact at least in part by fin 453.For in the first triangle 504 with the angular emission that are higher than 67.5 degree emitting area, emission contributes light to whole light.
First, second, and third arrow 506a, 506b and 506c have shown the different emission angles that the diverse location in the first triangle from the phosphor bearing part 454 begins, and can illustrate the impact that larger fin surface area has the light from these diverse locations emissions.The first arrow 506a illustrates from the light of the zone emission of the eminence on phosphor bearing part 454, wherein these zones have the downward potential contribution of photodistributed maximum, this is that described parts include but not limited to phosphor bearing part 454, scatterer dome 456 and radiator 452 because of the geometry of the parts of lamp 500.Show that such as the second and the 3rd arrow 506b and 506c the lower emitting area on ball cover provides the contribution that reduces gradually to the downward distribution that begins from lamp.Very little to the downward emission contribution that begins from lamp from the emission of the bottom part of ball cover, and the emission of the higher height from the ball cover has remarkable contribution to the downward emission from lamp 500 beginnings.
Referring now to Figure 24,, lamp 500 is shown as has the second triangle 508, and this second triangle represents to be increased to the extra surface area on the fin.For the emission from the bottom part of ball cover, the measurer of the light that the surface area of increase stops fin 453 has impact seldom, but from the emission in these zones to from the downward emission contribution of lamp seldom.Relatively, the light of the emission of the higher position from the ball cover is greatly affected.As can seeing from arrow 510, the angle that light can without hindrance emission is compared with the first arrow 508a and has been raise, and described the first arrow shows the top angle among Figure 23.This has reduced the amount of the light of downward without hindrance emission thereupon.This can cause lamp to lose Energy Star Emission characteristics.As an alternative, larger fin surface area can increase at fin in the bottom, but this can cause the size of radiator to surpass the A19 case.The angle that provides in the different embodiments of describing hereinbefore provides such angle, the uniform emission that this angle allows lamp holder the A19 case to be arranged and have expectation still allows fin to have essential surface area to distribute the heat that comes from lamp simultaneously.
Be appreciated that the scatterer dome can adopt many different shapes so that the dynamic relationship between phosphor bearing part and the scatterer dome to be provided, this dynamic relationship causes the lamp emission characteristics expected.In some embodiments, the shape of scatterer dome can depend at least in part that the shape of phosphor bearing part is to realize lamp size and the emission characteristics of expectation.Figure 25 to Figure 28 has shown the size that is used for according to an embodiment of short and stout shape scatterer dome 560 of the present invention.
That discusses in the patent application middle discussion and that here introduce as mentioned is such, and scatterer dome according to the present invention can have scattering and transmit the light of the different amounts that come from lamp source with the zones of different of the emission pattern of help generation expectation.In some embodiments, the zones of different of the light of scattering and the different amounts of transmission can realize by applying the scatterer domes at the zones of different place with the scattering material of different amounts.This output beam intensity profile that thereupon can change light source to be to provide the emission characteristics of raising, as mentioned as described in.
In some embodiments, the present invention can depend on the combination of scatterer element (that is, scatterer dome) and scatterer coating scattering nature to produce the expectation far field intensity profile of lamp.In different embodiments, scatterer thickness can depend on different factors with the position, such as scatterer dome geometry, light source arrangement and from the pattern of the light of phosphor bearing part emission.
In one embodiment, the scatterer dome can be arranged as the emission intensity profile of two-dimentional LED, led array, plane phosphor converted layer or three-dimensional phosphor bearing part is converted to wider beam profile, such as with incandescent A19 lamp size and Ministry of Energy (DOE) Energy Star The beam profile that emission characteristics is associated.This can make it possible to efficient and cost efficiency highland make be used for replacing conventional incandescent lamp bulb based on LED.
Have been found that local and/or non-uniform coating can produce the angle pencil of ray intensity profile, described angle pencil of ray intensity profile is desirable for the incandescent lamp substitute and satisfies Energy Star for the uniformly light-emitting intensity distribution Accordance.Not how are tube radiator and scatterer ball cover geometry, and non-uniform coating also can provide the realization Energy Star The ability of accordance.On common meaning, enough, local coating suitably is set on scatterer dome cleaning or evenly coating scattering and the intensity profile that passes the optical photon of scatterer dome can be controlled to preferred angle.In Energy Star In the situation of accordance, a layout will redirect optical photon so that spend greater than 120 in the emissive porwer at wide-angle place.These layouts can provide the lamp that uses cheap two-dimension light source, and meanwhile satisfy A19 size and Energy Star Emission standard.The local coating of these embodiments can be used as the certain percentage that covers scatterer and only has the coating in an independent photophore zone and exist, or coating can be used as along ring or the band of the specific region of scatterer and arranges.
Figure 29 has shown an embodiment of scatterer dome 580, and this scatterer dome has the most uniform coating 582 that covers its surface and has the thicker strip coating 584 of multiple scattering material.In the embodiment that shows, thicker strip coating 584 is crossed over the scope around the scatterer dome 580 in specific angular field of view, wherein strip coating 584 prevents that more light from that specific region escape, causing described light to leave with greater or lesser angle.
The curve map of Figure 30 has shown that the emission intensity profile 592 of typical incandescent lamp, the emission intensity profile 594 and comprising that comprises the LED lamp of the scatterer dome with even scattering nature have and has contained the more emission intensity profile of the LED lamp 596 of the scatterer dome of the band of multiple scattering material (or zone).The low visual angle of profile 594 demonstration uniform coatings or axial light intensity are less than the intensity at the angle place between 45 to 105 degree.Referring now to profile 596,, the intensity between 45 and 105 degree is less than axial light intensity.As the result of this intensity skew, only stronger greater than the angle place of 105 degree.Profile 596 shows that the lamp with non-uniform coating can provide the luminous distribution that is equal to and is better than in some cases incandescent lamp.
Figure 31 has shown the more close view of emission profile 596 shown in Figure 30, has shown that have non-uniform coating for the comprising emissive porwer of LED lamp of scatterer in (that is, the band of larger scatterer or zone) is to the curve at visual angle.Figure 32 lists the Energy Star of comparing with the performance of launching the lamp that is presented at the profile among Figure 31 The table of compliance data.With Energy Star In the relevant factor of accordance one is minimum of a value and the ratio of mean value.Some lamps with uniform coating can reach the value that approaches up to 26%.By relatively, be presented at the requirement that emission profile among Figure 30 can be realized about 17% value and meet " less than 20% ".In this case, (this position is between 45 and 105 degree) arranges the emission profile of widening that the strip coating with extra scattering material provides expectation on the scatterer dome or in the interior tram.
Mention as mentioned like that, provide in the many different band that extra scatterer can be on the scatterer dome or the zone.Another embodiment of the invention comprises non-uniform coating, and this non-uniform coating can comprise a plurality of local coatings.Local coating can use any method of describing in this application to apply, and one of them method is to spray on the scatterer dome.A coating of extra scatterer can deposit near the centre of scatterer ball cover, such as depositing in the angular field of view of about 45 to 105 degree.The second coating of extra scatterer then can be in the place, top of scatterer dome deposition to cover 0 visual angle to about 45 degree.The coating of these combinations has stopped the major part of optical photon between 0 and 105 degree, thereby allows more light to pass the scatterer dome with wide-angle more.Referring now to Figure 33,, compare with the coating of the profile 602 that comes from typical incandescent lamp, show the emission intensity profile with this two parts coating 600 of the lamp with scatterer dome.These profiles are very similarly and as in the table 610 in being presented at Figure 34, this two parts heterogeneous texture has been realized Energy Star Accordance.
The experiment of noticing some embodiments the first band that display application is thin provides some reductions (for example, 30% to 27%) on the ratio of minimum of a value and mean value.By thickening the first band, further, this ratio reduces more, and from 27% to 24%.Also be determined by experiment out, in case extra scatterer, is then realized the ratio of 13% to 19% minimum of a value and mean value in place, the top of scatterer dome (in the scope of about 0 to 45 degree) coating.This only is in can arranging in order to the many different scatterer bands of the lamp emission characteristics that produces expectation according to the present invention one.
Can comprise along any direction of inner surface and outer surface according to the different embodiments of scatterer of the present invention and to change scattering nature.In some embodiments, scatterer can comprise transparent material (substrate), and this transparent material is included in the scattering film of the vicissitudinous scattering nature of tool on its inner surface.Other embodiment can comprise transparent ball cover, and this transparent ball cover has on surface within it and/or the outer surface and/or is embedded in scattering film in the scatterer element 580.Described scattering film can have many different thickness, depends at least in part the type of used film/driving fit material material, scattering material and the density of scattering material in described film.In some embodiments, transparent ball cover can have the scattering film thickness in from 0.1 to 1000 micron the scope, and wherein film is on the inside and/or outside of ball cover.In the embodiment that uses cellulose base driving fit material, film thickness can be in from 0.1 to 100 micrometer range, and wherein said film is on the outside and/or inside of ball cover.In some embodiments that use cellulose base driving fit material, can use alum clay base scattering particles, the some of them particle has 0.1 to 4.0 micron diameter.
In other other embodiment, scatterer can comprise transparent ball cover, and scattering film can comprise methyl silicon resin base driving fit material, and wherein said film is on the inside and/or outside of ball cover.In these embodiments, described film can be in the scope of from 0.1 to 700 micron thickness, and can comprise the scattering particles of being made by different materials.Some embodiments can comprise the alum clay scattering particles, and wherein these embodiments have the grain thickness in 0.1 to 4.0 micrometer range.
The thickness of described film can and can use different driving fit material and granular materials greater than those thickness of above describing.As discussed, scatterer dome and scatterer can comprise any material of above describing and can use any method of above describing to apply.In some embodiments, the driving fit material material that is used for scatterer can be organic polymer, such as ethyl cellulose, nitrocellulose or polyethylene glycol oxide (poly(ethylene oxide)) or inorganic polymeric system (such as silicones or ethyl polysilicate (ethyl polysilicate)).In other other embodiment, the driving fit material can comprise enamel.In some embodiments, scatterer can comprise the scattering particles of alum clay, tripoli, titanium white, titanium dioxide or their combination, and the some of them embodiment has the particle size of from 0.1 to 1.0 micron scope.In some embodiments, scatterer ball cover material can be borosilicate glass, soda lime glass or polycarbonate thermoplastic plastics.An embodiment can comprise that the diameter that is dispersed in the ethyl cellulose driving fit material is about 0.5 to 0.8 micron bauxite particles.Solvent for the solution that comprises bauxite particles and ethyl cellulose can be ethyl acetate, ethanol, isopropyl alcohol, ethylene glycol monoethylether acetate (ethylene glycol monoethyl ether acetate) and Dibutyl phthalate.The scope of above describing is applicable to the lamp of the emission effciency with expectation (such as greater than 85%).Have thicker layer and can cause low lamp emission effciency.
Figure 35 is the Figure 62 0 that shows about the varied in thickness of an embodiment of the nonisotropic scattering film 622 on the inner surface of short and stout shape scatterer 624 as described in as mentioned.The thickness of film 622 is measured at the differing heights place and in the scope of 10 millimeters of about 21 microns and height 30 millimeters of about 200 microns and the height to thickness from thickness.The thickness of described film is about 44 microns at the place, top of scatterer.Be appreciated that these thickness can change according to many factors as discussed above, such as the type of scatterer shape, driving fit material material, scattering particles, etc.
Figure 36 to Figure 41 has shown the different embodiments that have the scatterer dome of the different scatterer layers that arrange in a different manner according to of the present invention.These provide as just example, and are appreciated that according to the present invention many different layouts can be provided.
Figure 36 has shown the scatterer dome 630 with even outer scatterer coating 632 and the outer local coating 634 on uniform coating 632.Local coating 634 can use many diverse ways to apply, and sprays or dip-coating such as passing through.Figure 37 has shown the scatterer dome 640 with even inscattering coating 642 and local external coating 644, and described coating can use diverse ways to apply, such as spraying or dip-coating.Figure 38 has shown the scatterer dome 650 with even external coating 652 and local undercoating 654.Figure 39 has shown the scatterer dome 660 of the local undercoating 664 with even external coating 662 and the vicissitudinous thickness of tool.Figure 40 has shown the printing opacity of the local undercoating 672 with varied in thickness or transparent scatterer dome 670.Figure 41 also shown have a plurality of undercoating 682,684 printing opacity or transparent scatterer dome 680, in these a plurality of undercoating all or some can the vicissitudinous thickness of tool.
Although above in question many are for the scattering properties that changes in the zone of scatterer dome, are appreciated that remote phosphor (phosphor bearing part) can have the zone of different switching material concentration.This also can assist in generating the emission profile of expectation and the light characteristic of expectation.In some embodiments, the phosphor bearing part locates or can have at the top transition material of increase on every side at the top, but this increase can be in other zone.Be appreciated that also that as the scatterer coating transition material can make up to be applied on the phosphor bearing part with any different undercoating and the external coating of above describing.
For scatterer dome and phosphor bearing part the two, coating material may be combined in the material that forms dome.This can need not stop to deposit the manufacturing that allows scatterer dome or phosphor bearing part in the situation of scatterer or phosphor material.Described scatterer dome or phosphor bearing part can form the shape of expectation with the material of expectation and be incorporated on the dome.This can be to be applicable to especially form scatterer dome and/or phosphor bearing part with what obtain easily with easy-to-use material (such as plastics).This scattering material and/or transition material also can be arranged with different concentration in the zones of different of dome material, and also can comprise different scatterings or transition material in zones of different.
Be appreciated that the layout of above describing is similarly applicable to the application of the illumination except the bulb type of above describing.Feature above all or some also applicable to the illumination of area and cast.That is to say that these dissimilar lamps can use difform remote transition material and difform long distance scatter device.As embodiment above, the long distance scatter device can have the zone that scattering properties improves, and maybe can have the shape that helps to produce the emission profile of expecting.
Be appreciated that according to lamp of the present invention or bulb and can arrange in the many different mode except the embodiment of above describing.Embodiment above still is appreciated that the embodiment of replacement can comprise that at least some have the LED of conformal phosphor layers with reference to remote phosphor discussion.This can be applicable to have the lamp from the light source of dissimilar emitter emission different colours light especially.These embodiments can otherwise have above some or all of in the feature of describing.
Figure 42 has shown another embodiment according to the lamp 700 in A19 size case 701 of the present invention.Lamp 700 uses the radiator 702 that has with fin 703 like the cooling fins that shows hereinbefore, but has slightly different shape.As embodiment above, lamp 700 comprises dome shape phosphor bearing part 704 and dome shape scatterer 706.As embodiment above, LED(does not demonstrate yet) can be installed on the plane surface of radiator 702, wherein phosphor bearing part and scatterer 704,706 are above LED.Led chip, scatterer 706 and phosphor bearing part 704 can comprise any in shape, layout and the characteristic of above describing.Lamp 700 also can comprise the installing mechanism 708 that is adapted to fit in the type in the conventional electrical outlets, described installing mechanism can comprise the threaded portion for precession standard Edison socket in this embodiment, and described lamp also can comprise the installing mechanism of the replacement of above mentioning.Dome shape scatterer 706 can be many different shape and size, and in the embodiment that shows be " short and stout shape " and can be as mentioned as described in different sections, have the scatterer of varying number.
Radiator 702 can comprise the chamber/housing 710 that holds supply of electric power device unit 712.Supply of electric power device unit 710 can have any in feature, element or the characteristic of supply of electric power device discussed above unit, includes but not limited to heat conduction Embedding Material.Supply of electric power device unit 712 comprises and keeps power is converted to the printed circuit board (PCB) 714 that LED drives a plurality of electronic components 716 of signal, and also can allow to adjust the light that is sent by lamp 700.Printed circuit board (PCB) 714 is shown as in lamp 700 and is installed in vertically in chamber/housing 710, but be appreciated that, in other embodiment, printed circuit board (PCB) can be installed in other mode and with different orientation, and supply of electric power device unit 712 printed circuit board (PCB) that can comprise more than.
Embodiment is above described with reference to phosphor layer or the phosphor bearing part of difformity and size, but other embodiment can comprise except above describe those different shape and size.For example, Figure 43 to Figure 46 has shown the extra embodiment 718,720,722 and 726 of phosphor bearing part, and these embodiments can be used in according to lamp or bulb sizes or the emission pattern to realize expectation in lamp of the present invention or the bulb.These only are in the many different shape considered of the present invention some.
Although the present invention describes in detail with reference to its some preferred structure, other pattern is possible.For example, different characteristic or the aspect of LED bulb of the present invention are described with respect to numerous embodiments, but be to be understood that, such as one of ordinary skill in the art will appreciate, each in these features or the aspect can merge and use similarly with respect to any embodiment of here describing.Therefore, the spirit and scope of the present invention should not be limited in the pattern of above describing.

Claims (57)

1. lighting device comprises:
Light source, described light source is on radiator;
Scatterer, described scatterer are on described radiator and spaced apart with described light source;
And
Material for transformation of wave length, described material for transformation of wave length is on the described radiator and be arranged between described light source and the described scatterer and spaced apart with described light source and described scatterer, and wherein said lamp is arranged to be assemblied in the A19 case simultaneously emission and basically launches uniformly pattern.
2. lighting device claimed in claim 1, emission meets Energy Star The emission pattern that requires.
3. lighting device claimed in claim 1, wherein, described light source comprises one or more light emitting diodes.
4. lighting device claimed in claim 1, wherein, described material for transformation of wave length comprises the phosphor bearing part with heat conducting material.
5. lighting device claimed in claim 1, wherein, described scatterer comprises the scatterer dome.
6. lighting device claimed in claim 1, wherein, described scatterer comprises scattering material, wherein said scatterer has the one or more zones that covered by more substantial scattering material.
7. lighting device claimed in claim 1, wherein, described scatterer scattering is from the light of described light source and/or described material for transformation of wave length.
8. lighting device claimed in claim 1, wherein, described material for transformation of wave length is three-dimensional.
9. lighting device claimed in claim 1, wherein, described material for transformation of wave length is the plane.
10. lighting device claimed in claim 1, wherein, described material for transformation of wave length is frusto-spherical basically.
11. lighting device claimed in claim 1, wherein, described scatterer is frusto-spherical basically.
12. lighting device claimed in claim 1, wherein, described material for transformation of wave length and described scatterer are frusto-spherical basically, so that described material for transformation of wave length phosphor and scatterer provide two dome structures.
13. lighting device claimed in claim 1, wherein, described scatterer is not hidden the outward appearance of described material for transformation of wave length at least in part when described lighting device is worked.
14. the described lighting device of claim 13 wherein, does not have described scatterer in the in harness situation to represent the outward appearance of white at described lighting device.
15. lighting device claimed in claim 1 provides the steady-state light output of at least 800 lumens.
16. lighting device claimed in claim 1 provides every watt of 65 lumens or higher steady-state light output.
17. lighting device claimed in claim 1 provides every watt of 80 lumens or higher steady-state light output.
18. the described lighting device of claim 16 is with the work about electric power less than 10 watts.
19. lighting device claimed in claim 1 provides the stable state output of 800 lumens with 10 watts or still less electric power.
20. lighting device claimed in claim 1 also comprises the protective layer that covers the electrical conduction feature that is positioned at described scatterer dome and material for transformation of wave length below.
21. lighting device claimed in claim 1, wherein, described light source is installed on the printed circuit board (PCB) that is mounted to described radiator, and described light source comprises that also covering is positioned at the protective layer of the electrical conduction feature on the described printed circuit board (PCB).
22. lighting device claimed in claim 1, emission has the light of the colour rendering index (CRI) greater than 80.
23. lighting device claimed in claim 1, emission has the light of the colour rendering index (CRI) greater than 90.
24. lighting device claimed in claim 1, wherein, from the light of described scatterer emission have in the scope at visual angle average 20% in spatial uniformity.
25. the described lighting device of claim 24, wherein, the scope at described visual angle is 0 to 135 degree.
26. the described lighting device of claim 24 has 5% luminous flux greater than total light flux in the visual angles of 135 to 180 degree.
27. lighting device claimed in claim 1, wherein, the lower limb of described phosphor bearing part is higher than the lower limb of described scatterer dome.
28. lighting device comprises:
Light source, described light source is on radiator;
Scatterer, described scatterer are on described radiator and spaced apart with described light source; And
Material for transformation of wave length, described material for transformation of wave length is on the described radiator and be arranged between described light source and the described scatterer and spaced apart with described light source and described scatterer, wherein said radiator comprises a plurality of fin, each fin all has and angle part is arranged from the outside angled bottom of the central axis of described lighting device and backward towards the angled top of described central axis part, pattern is launched in emission basically uniformly.
29. the described lighting device of claim 28 is arranged to cooperate A19 size case.
30. the described lighting device of claim 28, wherein, described scatterer comprises the scatterer dome, and described fin does not extend beyond the outer transverse edge of described scatterer dome.
31. the described lighting device of claim 28, wherein, described material for transformation of wave length and described scatterer are frusto-spherical basically, so that described phosphor bearing part and scatterer form two dome structures.
32. the described lighting device of claim 28, wherein, described radiator comprises 20 to 60 fin.
33. the described lighting device of claim 28, wherein, described radiator comprises 30 to 50 fin.
34. the described lighting device of claim 28, wherein, described radiator comprises about 38 fin.
35. the described lighting device of claim 28, wherein, described compresses lower section have become with described lighting device central axis 150 the degree or larger angles.
36. the described lighting device of claim 28, wherein, described top section has 60 degree or less taking measurement of an angle.
37. the described lighting device of claim 28, wherein, described top section has 50 degree or less taking measurement of an angle.
38. the described lighting device of claim 28, wherein, described top section has taking measurement of an angle of about 42 degree.
39. solid state lamp comprises:
Radiator, described radiator has a plurality of fin;
Solid state light emitter, described solid state light emitter are installed on the described radiator;
Phosphor bearing part, described phosphor bearing part are on described radiator, above described light source and spaced apart with described light source; And
Scatterer, described scatterer is on described radiator, above described phosphor bearing part and spaced apart with described phosphor bearing part, wherein said phosphor bearing part and described scatterer are frusto-spherical basically, so that described phosphor bearing part and scatterer provide two dome structures, wherein said lamp is assemblied in the standard size profile, and pattern is launched in emission basically uniformly.
40. the described solid state lamp of claim 39, wherein, described standard size case comprises from one among group A19, A21 and the A23.
41. the described solid state lamp of claim 39 wherein, is basically launched uniformly pattern and is satisfied Energy Star Launch requirements.
42. the described solid state lamp of claim 39 is with 10 watts or the less stable state output that 800 lumens are provided.
43. the described solid state lamp of claim 39, wherein, described fin does not extend beyond the transverse edge of described scatterer.
44. the described solid state lamp of claim 39, wherein, described scatterer comprises along the scattering material of one or more variable concentrations of described frusto-spherical shape.
45. solid state lamp comprises that emission has every watt of 80 lumens or higher efficient and has solid state light emitter greater than the light of 80 colour rendering index.
46. it is 90 or greater than the light of 90 colour rendering index that the described lamp of claim 45, emission have.
47. the described lamp of claim 45 also comprises long distance scatter device dome.
48. the described lamp of claim 45 also comprises remote phosphor.
49. the described lamp of claim 45 also comprises the phosphor bearing part.
50. solid state lamp comprises that emission has the light of every watt of 80 lumens or higher efficient and is assemblied in solid state light emitter in the A19 size case.
51. solid state lamp comprises that emission has the light of every watt of 80 lumens or higher efficient and has the Energy Star of meeting The solid state light emitter of the emission pattern of performance requirement.
52. solid state lamp comprises the solid state light emitter that has the light of every watt of 80 lumens or higher efficient with 10 watts or the emission of less electric power.
53. solid state lamp comprises that emission has the light of every watt of 80 lumens or higher efficient and has two dome scatterers and the solid state light emitter of transition material layout.
54. solid state lamp comprises that emission has every watt of 80 lumens or higher efficient and has 3000 Kelvins or the solid state light emitter of the light of less colour temperature.
55. the described lamp of claim 54, emission has the light of 2700 Kelvins or less colour temperature.
56. solid state lamp comprises that emission has the light of every watt of 80 lumens or higher efficient and has solid state light emitter greater than 25,000 hours or longer life-span.
57. solid state lamp comprises that emission has the light of every watt of 80 lumens or higher efficient and had 50,000 hours or the solid state light emitter in longer life-span.
CN2011800223837A 2010-03-03 2011-03-02 Solid state lamp and bulb CN102971574A (en)

Priority Applications (24)

Application Number Priority Date Filing Date Title
US33951510P true 2010-03-03 2010-03-03
US33951610P true 2010-03-03 2010-03-03
US61/339,516 2010-03-03
US61/339,515 2010-03-03
US12/848,825 2010-08-02
US12/848,825 US8562161B2 (en) 2010-03-03 2010-08-02 LED based pedestal-type lighting structure
US38643710P true 2010-09-24 2010-09-24
US12/889,719 2010-09-24
US61/386,437 2010-09-24
US12/889,719 US9523488B2 (en) 2010-09-24 2010-09-24 LED lamp
US201061424665P true 2010-12-19 2010-12-19
US201061424670P true 2010-12-19 2010-12-19
US61/424,670 2010-12-19
US61/424,665 2010-12-19
US12/975,820 US9052067B2 (en) 2010-12-22 2010-12-22 LED lamp with high color rendering index
US12/975,820 2010-12-22
US201161434355P true 2011-01-19 2011-01-19
US61/434,355 2011-01-19
US201161435326P true 2011-01-23 2011-01-23
US61/435,326 2011-01-23
US61/435,759 2011-01-24
US13/028,946 2011-02-16
US13/034,501 2011-02-24
PCT/US2011/000405 WO2011109098A2 (en) 2010-03-03 2011-03-02 Solid state lamp and bulb

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CN201180022583.2A Active CN103180658B (en) 2010-03-03 2011-03-02 Solid state lamp with thermal diffusion component and guide-lighting optical device
CN201180022624.8A Active CN103003625B (en) 2010-03-03 2011-03-02 Solid state lamp
CN2011800223856A CN103003617A (en) 2010-03-03 2011-03-02 LED lamp incorporating remote phosphor with heat dissipation features
CN2011800226214A CN102884364A (en) 2010-03-03 2011-03-02 Led lamp with remote phosphor and diffuser configuration
CN2011800223837A CN102971574A (en) 2010-03-03 2011-03-02 Solid state lamp and bulb
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CN201180022624.8A Active CN103003625B (en) 2010-03-03 2011-03-02 Solid state lamp
CN2011800223856A CN103003617A (en) 2010-03-03 2011-03-02 LED lamp incorporating remote phosphor with heat dissipation features
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