EP2144275A2 - Lichteinheit mit interner Beleuchtungsvorrichtung - Google Patents

Lichteinheit mit interner Beleuchtungsvorrichtung Download PDF

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Publication number
EP2144275A2
EP2144275A2 EP20090164958 EP09164958A EP2144275A2 EP 2144275 A2 EP2144275 A2 EP 2144275A2 EP 20090164958 EP20090164958 EP 20090164958 EP 09164958 A EP09164958 A EP 09164958A EP 2144275 A2 EP2144275 A2 EP 2144275A2
Authority
EP
European Patent Office
Prior art keywords
light
envelope
layer
illumination device
light assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20090164958
Other languages
English (en)
French (fr)
Other versions
EP2144275A3 (de
Inventor
Wei-ping SHAO
Shou-Yi Hung
Ping-Sung Lu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Candle Laboratory Co Ltd
Original Assignee
Candle Laboratory Co Ltd
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 claimed from TW97212108U external-priority patent/TWM344447U/zh
Priority claimed from TW097212242U external-priority patent/TWM354843U/zh
Priority claimed from TW98207483U external-priority patent/TWM366014U/zh
Application filed by Candle Laboratory Co Ltd filed Critical Candle Laboratory Co Ltd
Publication of EP2144275A2 publication Critical patent/EP2144275A2/de
Publication of EP2144275A3 publication Critical patent/EP2144275A3/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • Taiwan Application Serial Number 97212108 filed July 08, 2008
  • Taiwan Application Serial Number 97212242 filed July 10, 2008
  • Taiwan Application Serial Number 98207483 filed May 01, 2009 , which are herein incorporated by reference.
  • the present invention relates to a light assembly, more particularly to a light assembly having at least one illumination device disposed therein.
  • Illumination apparatuses play an important role in our daily life. Depending on the principles of light generation, illumination apparatuses may be categorized into incandescent lamps, halogen lamps, fluorescent lamps, arc lamps, light emitting diodes (LEDs) and discharge lamps.
  • Incandescent lamps and hot cathode fluorescent lamps are the most commonly used illuminating device in daily lighting applications.
  • the use of LEDs in daily illumination is limited due to the nature of the LED material; however, future applications thereof are anticipated.
  • HCFLs are classified into various types rage from Type T5 to T12 depending on their sizes and illumination efficiencies.
  • each type of the HCFLs may have their own advantages and disadvantages regarding their respective size, color rendering property, power consumption, efficiency, service life, and/or sale price.
  • the present invention is directed to a light assembly.
  • the light assembly comprises an illumination device, an envelope, and a light-processing layer.
  • the envelope encircles the illumination device.
  • the light-processing layer is disposed on an inner surface of the envelope; as such, when light is emitted from the illumination device, the light-processing layer may alter the wavelength composition of the light or diffuse the light.
  • the light-processing layer may be a wavelength-converting layer, a diffusion layer, or a combination thereof.
  • the wavelength-converting layer may alter the wavelength composition of the light emitted from the illumination device.
  • the diffusion layer may diffuse the light emitted from the illumination device so that the light distribution along the peripheral of the envelope is uniform.
  • the present invention is directed to a light assembly.
  • the light assembly comprises at least one illumination device, an envelope, an electrode set, and a wavelength-converting layer and/or a diffusion layer.
  • the illumination device is operable to emit a light.
  • the envelope encircles the illumination device and is light-transmissive.
  • the wavelength-converting layer and/or the diffusion layer may be disposed on an inner surface of the envelope.
  • the electrode set is disposed on one distal end of the envelope and electrically connected to the illumination device.
  • the illumination device may be an ultraviolet lamp, a cold cathode fluorescent lamp (CCFL), a light emitting diode (LED) or an ultraviolet light emitting diode (UV LED).
  • the envelope may have a shape of a light tube or a light bulb.
  • the light assembly according to embodiments of the present invention has the characteristics such as low power consumption, high illumination efficiency, long service life, and low cost, which altogether make the light assembly a candidate for replacing current illumination apparatus.
  • the shape and size of the light assembly may follow that of the commercial light tubes or light bulbs, and hence, the light assembly of the embodiments of the present invention may be fitted into the light sockets used to accommodate those commercial light tubes or light bulbs.
  • the present invention is directed to a light assembly.
  • the light assembly comprises an illumination device, an envelope, and a light-processing layer.
  • the envelope encircles the illumination device.
  • the light-processing layer is disposed on an inner surface of the envelope; as such, when light is emitted from the illumination device, the light-processing layer may alter the wavelength composition of the emitted light and/or cause the emitted light to diffuse.
  • FIG. 1 is a schematic diagram illustrating a light assembly 100 according to one embodiment of the present invention.
  • the light assembly 100 comprises an illumination device 102, an envelope 104 and a light-processing layer 106.
  • the light assembly 100 further includes two electrode sets 108 respectively disposed on two opposite distal ends of the envelope 104.
  • Each electrode set comprises at least one electrode (not shown) disposed therein.
  • each of the electrode sets 108 has one electrode disposed therein, and each electrode is electrically connected to the illumination device 102.
  • the electrode set 108 may have two electrodes disposed therein.
  • the electrodes may drive the illumination device 102 disposed in the envelope 104 by use of an external power source (not shown) so that the illumination device 102 emits a light.
  • the electrode sets 108 may support the illumination device 102 and thus maintain the illumination device 102 in position.
  • the electrode sets 108 may serve to seal the light assembly 100.
  • additional sealing members may be used to seal the light assembly 100.
  • Said sealing members may be metal caps, plastic caps or other suitable sealants.
  • the wavelength-converting layer may alter the wavelength composition of the light emitted from the illumination device 102; whereas the diffusion layer may diffuse the light emitted from the illumination device 102 so that the light is distributed uniformly along the periphery of the envelope.
  • the light processed by the light-processing layer 106 would pass the light-transmissive envelope 104 to provide illumination.
  • the light-processing layer 106 may be a wavelength-converting layer, a diffusion layer, or a combination thereof. Said light-processing layer 106 may be a single layer, or consist of multiple layers.
  • the light-processing layer 106 may be a wavelength-converting layer or a diffusion layer.
  • the light-processing layer 106 is a single layer but possess both the abilities to alter the wavelength composition and provide uniform distribution of the light.
  • the wavelength-converting layer itself my posses the ability to diffuse the light.
  • the diffusion layer itself may possess the ability to alter the wavelength composition of the light.
  • the light-processing layer 106 may consist of multiple layers.
  • the light-processing layer 106 may have a wavelength-converting layer and a diffusion layer disposed sequentially on the inner surface of the envelope 104.
  • the order or sequence of said two layers on the envelope 104 is not limited to the described manner and may be swapped in some examples.
  • the light-processing layer 106 may consist of more than two layers.
  • Illustrative examples of the wavelength-converting layer include, but are not limited to, a light sensitive layer, a phosphor layer, a photoluminescent layer, a quantum dot layer, a quantum line layer, a quantum well layer, and a combination thereof.
  • said phosphor layer may be made of any suitable phosphor powders, more particularly, the phosphor powders having high color-rendering property.
  • the phosphor powders having high color-rendering property can be hydrolyzed colloid reaction (HCR) phosphor powders.
  • Main composition of the HCR phosphor powders comprises red phosphor powders having a formula of Y(P,V)O 4 :Eu, green phosphor powders having a formula of BaMgAl 10 O 17 :Eu,Mn or Zn 2 SiO 4 :Mn, and blue phosphor powders having a formula of Sr 5 (PO 4 ) 3 CI:Eu.
  • the diffusion layer may include a plurality of diffusive particles dispersed therein.
  • the diffusive particle may include, but are not limited to phosphor particles, polystyrene (PS) particles and poly(methyl methacrylate) (PMMA) particles.
  • the illumination device 102 may be an ultraviolet lamp, a CCFL, an LED or a UV LED.
  • the illumination device 102 may or may not have mercury contained therein.
  • the shape of the illumination device 102 it can be any suitable shape including, but not limited to, a prism-shape, a cylinder-shape, a U-shape, a round-shape, and a spiral-shape.
  • LEDs or UV LEDs are used as the illumination device 102, the LEDs or UV LEDs may be arranged in such a way to provide ideal illumination quality.
  • the number of the illumination device 102 is not subjected to any particular limitation; rather, the number may be determined depending on the size of the envelope 104 and/or the size of the illumination device 102. Specifically, the number of the illumination device 102 may be one or more.
  • another wavelength-converting layer and/or another diffusion layer may be formed on the outer surface of the illumination device 102 to assist or enhance the function of the light-processing layer 106.
  • the envelope 104 may be made of glass or thermoplastic materials.
  • the thermoplastic materials include, but are not limited to, poly(methyl methacrylate) (PMMA), polystyrene (PS), methyl methacrylate-co-styrene (MS), polycarbonate, (PC), polyethylene terephthalate (PET), or polyimide.
  • diffusive particles mentioned-above may be added into the thermoplastic materials during the manufacture of the envelope 104.
  • the envelope 104 thus prepared may itself possess the ability to diffuse the light to assist or enhance the function of the light-processing layer 106.
  • the envelope 104 may have any suitable shape.
  • the envelope 104 may have a prism-shape, and the prism-shaped envelope 104 may have a cross-section that is circular, elliptic or polygonal (i.e., triangular, quadrangular, pentagonal, or polygons having more line segments) in shape.
  • the envelope 104 may have a shape of a light tube or a light bulb.
  • the shape and size of the envelope 104 are identical to those of the commercially available light tubes or light bulbs, and hence the light assembly 100 may be fitted into the light sockets used to accommodate those commercial light tubes or light bulbs. It is well known that the commercially available light tubes or light bulbs have various sizes and shapes, and the specifications thereof are easily attainable and thus are not elaborated herein.
  • FIG. 2A is a cross-sectional diagram illustrating a light assembly 200 according to another embodiment of the present invention.
  • the light assembly 200 may be used in a lighting apparatus or a backlight module.
  • three cylindrical ultraviolet lamps 202 are used as the illumination device, and a wavelength-converting layer 216 is disposed on the inner surface of the envelope 204 so as to convert the UV light emitted from the ultraviolet lamps 206 into visible light.
  • the wavelength-converting layer 216 may be any one of the above-mentioned wavelength-converting layers.
  • the wavelength-converting layer 216 may be a phosphor layer, such as a phosphor layer made of phosphor powders with high color-rendering property.
  • the envelope 204 is made of a thermoplastic material such as PET.
  • phosphor powders may be coated onto a surface of a PET sheet so as to form a wavelength-converting layer 216 thereon.
  • the PET sheet is rolled into a hollow tube in such a way that the wavelength-converting layer 216 is located on an inner surface thereof.
  • the envelope 204 has a cross-section that is elliptic in shape.
  • said three ultraviolet lamps 202 are arranged on the long axis "L" of the elliptic envelope 204 in order to achieve optimal illumination efficiency.
  • Said light assembly 200 having a cross-section that is elliptic in shape is particularly suitable to be used as the light source of the backlight modules.
  • the shape shown in FIG. 2A is only an example, and the cross-sectional shape of the envelope 204 may be chosen depending on the design needs.
  • ultraviolet lamp 202 may have other shape other than the cylindrical shape shown in FIG. 2A .
  • One feature of the light assembly 200 lies in that the wavelength-converting layer 216 at the UV lamps 202 are separately disposed, so that the UV light emitted from the UV lamps 202 must first pass through the body (usually made of the glass) of the UV lamps 202 before contacting the wavelength-converting layer 216.
  • the phosphor layer (wavelength-converting layer) of conventional fluorescent light tube is disposed on the inner surface of the fluorescent light tube.
  • the plasma formed during the illumination process of the fluorescent light tube may damage the crystal structure of the phosphor powders of the phosphor layer and thereby resulting in lattice defects therein and thus decreasing the luminance of the light emitted from the phosphor powders.
  • the mercury vapor contained in conventional fluorescent light tube is excited to emit ultraviolet light having wavelengths at about 253.7 nm and about 185 nm. Under high operating temperature, the phosphor powders of the phosphor layer of the conventional fluorescent light tube may absorb the UV light at a wavelength of about 185 nm and thereby resulting in color centers therein.
  • the wavelength composition and the color of the light emitted from the phosphor powders having color centers are different from those of the undamaged phosphor powders.
  • the formation of color centers would lower the luminance of the light emitted from the phosphor powders.
  • Such problems would be even more serious for the fluorescent light tubes employing phosphor powders having high color-rendering index (i.e., those having a CRI equal to or greater than 90%), wherein a service life thereof is usually less than half of that of a T5 light tube.
  • the body of the ultraviolet lamp is usually made of glass, which would absorb most of the 185 nm-UV light passing therethrough; this may further avoid the formation of color centers of the phosphor powders of the wavelength-converting layer.
  • the degradation rate of the phosphor powders, especially the phosphor powders with high color-rendering property, would be substantially decreased.
  • the service life of the light assembly according to embodiments of the present invention is extended so that it is substantially equal to or longer than the service life of T5 fluorescent lamps.
  • the interior space of the envelope 204 is substantially evacuated such that the light assembly 200 is more suitable to be used in environments having low working temperatures, such as at about 0°C.
  • the luminance of light emitted from the conventional fluorescent light assembly would be decreased as the working temperature is lowered.
  • the luminance of a fluorescent light assembly at temperature below 0°C is less than half of the luminance of the same fluorescent light assembly at about 30°C. Therefore, by substantially evacuating the interior space defined by the envelope 204 within the light assembly 200, the heat (or the temperature) of the ambient environment is less likely to be transferred to the interior of the light assembly 200.
  • the luminance variation of the light assembly of this embodiment under different ambient temperatures is relatively small.
  • the light assembly according to this embodiment is suitable to be used in an environment with low working temperature.
  • FIG. 2B is a cross-sectional diagram illustrating a light assembly 250 according to another embodiment of the present invention.
  • two ultraviolet lamps 202 are used as the illumination device and a diffusion layer 218 (as a light-processing layer) is disposed on the inner surface of the envelope 204.
  • a phosphor layer 216 is disposed on the outer surface of the ultraviolet lamps 202, so as to convert the UV light emitted from the ultraviolet lamps 202 into visible light.
  • the shape of the envelope 204 is cylindrical which is identical to that of commercially available fluorescent light tubes, and thus, the light assembly 250 may be fitted into conventional lamp sockets.
  • the light assembly 250 is featured in that the phosphor layer for converting the wavelength composition of the UV light and the source of the UV light are disposed separately.
  • the diffusion layer 218 disposed on the inner surface of the light assembly 250 may provide uniform light distribution along the periphery of the envelope.
  • the phosphor layer 216 may be disposed on an inner surface (i.e., the surface facing the interior of the light assembly) of the diffusion layer 218, or alternatively, the phosphor layer 216 may be sandwiched between the diffusion layer 218 and the envelope 204.
  • FIG. 3A is a cross-sectional diagram illustrating a light assembly 300 according to another embodiment of the present invention.
  • two cylindrical CCFLs 302 are used as illumination device, and a diffusion layer 318 is disposed on an inner surface of the envelope 304 to diffusive the light emitted from the CCFLs 302 so as to provide a uniform light distribution along the periphery of the envelope 304.
  • the materials of the envelope 304 and the diffusion layer 318 may be any one of the materials mentioned above.
  • FIG. 3B is an exploded view illustrating a light assembly 350 according to another embodiment of the present invention.
  • a U-shaped CCFL 352 is used as the illumination device, and a diffusion layer 318 is disposed on an inner surface of the tubular envelope 304 to diffusive the light emitted from the CCFLs 352 so as to provide a uniform light distribution along the periphery of the envelope 304.
  • an electrode set 308 having a pair of electrodes (not shown) therein is disposed on one distal end of the envelope 304.
  • the CCFL 352 is electrically connected to and driven by the electrode set 308 to emit light.
  • a sealing member 310 is disposed on the other distal end of the envelope 304.
  • the sealing member 310 has a support 312 disposed thereon to hold the CCFL 352 in position.
  • the shapes and sizes of the electrode set 308 and the sealing member 310 may be identical to those of the conventional light tubes so that the light assembly 350 may be fitted into conventional light sockets.
  • the materials of the envelope 304 and the diffusion layer 318 may be any one of the materials mentioned above.
  • FIG. 3C is a schematic diagram illustrating a light assembly 380 according to another embodiment of the present invention.
  • a U-shaped CCFL 352 is used as the illumination device, the envelope 384 has a bulb shape, and a diffusion layer 318 is disposed on an inner surface of the envelope 384 to diffusive the light emitted from the CCFLs 352 so as to provide a uniform light distribution along the periphery of the envelope 384.
  • an electrode set 388 having a pair of electrodes (not shown) therein is disposed at an opening of the bulb-shaped envelope 384.
  • the CCFL 352 is electrically connected to and driven by the electrode set 388 to emit the light.
  • the shape and size of the electrode set 388 may be identical to those of the conventional light tubes so that the light assembly 380 may be fitted into conventional light sockets.
  • the CCFL may have other shapes such as helical, annular or cylindrical.
  • the diffusion layer disposed on the inner surface of the envelope may broaden the illumination area of the CCFL and diffusive the light.
  • another diffusion layer may be disposed on the outer surface of the CCFL 302/352 to assist or enhance the function of the diffusion layer 318.
  • Said another diffusion layer may include a plurality of diffusive particles described above, and the material of this diffusion layer may be the same as or different from that of the diffusion layer 318.
  • FIG. 4 is a schematic diagram illustrating a light assembly 400 according to another embodiment of the present invention.
  • a plurality of LEDs or UV LEDs are used as the illumination devices 402
  • the envelope 404 has a shape of a light bulb
  • a light-processing layer 406 is disposed on an inner surface of the envelope 404.
  • the materials of the envelope 404 and the light-processing layer 406 may be any one of the materials described above.
  • an electrode set 408 having a pair of electrodes (not shown) therein is disposed at an opening of the bulb-shaped envelope 404.
  • the illumination devices 402 are electrically connected to and driven by the electrode set 408 to emit the light.
  • the shape and size of the electrode set 408 may be identical to those of the conventional light tubes so that the light assembly 400 may be fitted into conventional light sockets.
  • the light-processing layer 406 may be a diffusion layer for distributing the light emitted from the LEDs.
  • the light-processing layer 406 may be a wavelength-converting layer for converting the UV light emitted from the UV LEDs into visible light.
  • the wavelength-converting layer or the envelope 404 per se may have the ability to diffuse the light; while in some other embodiments, a diffusion layer (not shown) may be sandwiched between the wavelength-converting layer and the envelope 404 to diffuse the light.
  • the present invention is directed to a light assembly.
  • the light assembly comprises at least one illumination device, an envelope, an electrode set, and a wavelength-converting layer and/or a diffusion layer.
  • the illumination device is operable to emit a light.
  • the envelope encircles the illumination device and is light-transmissive per se .
  • the wavelength-converting layer and/or the diffusion layer may be disposed on an inner surface of the envelope.
  • the electrode set is disposed on one distal end of the envelope and electrically connected to the illumination device.
  • the envelope may have both of the wavelength-converting layer and the diffusion layer disposed on the inner surface thereof.
  • the illumination device may be an ultraviolet lamp, a CCFL, an LED or a UV LED.
  • the envelope may have a shape of a light tube or a light bulb.
  • the wavelength-converting layer and the diffusion layer may be any one of the materials described above.
  • the electrode set may also be used to hold the illumination device in position.
  • the shape and size of the electrode set is conformed to one of the specifications of existing light sockets so that the light assembly according to embodiments of the present invention may be directly fitted into these light sockets.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP20090164958 2008-07-08 2009-07-08 Lichteinheit mit interner Beleuchtungsvorrichtung Withdrawn EP2144275A3 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
TW97212108U TWM344447U (en) 2008-07-08 2008-07-08 Illumination light tube
TW097212242U TWM354843U (en) 2008-07-10 2008-07-10 High color rendering light assembly
TW98207483U TWM366014U (en) 2009-05-01 2009-05-01 Illumination light with inner light tube

Publications (2)

Publication Number Publication Date
EP2144275A2 true EP2144275A2 (de) 2010-01-13
EP2144275A3 EP2144275A3 (de) 2011-06-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090164958 Withdrawn EP2144275A3 (de) 2008-07-08 2009-07-08 Lichteinheit mit interner Beleuchtungsvorrichtung

Country Status (2)

Country Link
EP (1) EP2144275A3 (de)
JP (1) JP3153766U (de)

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WO2011119312A1 (en) * 2010-03-23 2011-09-29 Abl Ip Holding Llc Tubular lighting products using solid state source and semiconductor nanophosphor, e.g. for florescent tube replacement
US8162498B2 (en) 2008-05-27 2012-04-24 Abl Ip Holding Llc Solid state lighting using nanophosphor bearing material that is color-neutral when not excited by a solid state source
US8212469B2 (en) 2010-02-01 2012-07-03 Abl Ip Holding Llc Lamp using solid state source and doped semiconductor nanophosphor
US8702271B2 (en) 2010-02-15 2014-04-22 Abl Ip Holding Llc Phosphor-centric control of color of light

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US10359151B2 (en) 2010-03-03 2019-07-23 Ideal Industries Lighting Llc Solid state lamp with thermal spreading elements and light directing optics
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