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WO2010030069A1 - Lampe del à plaque plane - Google Patents

Lampe del à plaque plane Download PDF

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Publication number
WO2010030069A1
WO2010030069A1 PCT/KR2009/002794 KR2009002794W WO2010030069A1 WO 2010030069 A1 WO2010030069 A1 WO 2010030069A1 KR 2009002794 W KR2009002794 W KR 2009002794W WO 2010030069 A1 WO2010030069 A1 WO 2010030069A1
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WO
WIPO (PCT)
Prior art keywords
led
plate
light
phosphor
dot
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.)
Ceased
Application number
PCT/KR2009/002794
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English (en)
Korean (ko)
Inventor
김혜용
정봉문
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.)
GLLEPE CO Ltd
Original Assignee
GLLEPE 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
Application filed by GLLEPE CO Ltd filed Critical GLLEPE CO Ltd
Publication of WO2010030069A1 publication Critical patent/WO2010030069A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/08—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/06—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out ultraviolet radiation
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional 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

  • the present invention relates to an LED (Light Emitting Diode) light, and more particularly, a phosphor for converting illumination colors into a heat-resistant transparent resin matrix on a front surface of a dot type LED module plate installed in a matrix form. And / or by installing an optical color-converting fluorescent plate and a light diffusing plate incorporating an optical diffuser, it is simple and easy to obtain from a long-life high-brightness blue LED, a purple LED or an ultraviolet LED without using a relatively short-lived and expensive high-brightness white LED.
  • LED Light Emitting Diode
  • LED is a kind of semiconductor device that converts electrical energy into light energy by using the characteristics of a semiconductor made of a specific compound. It has very low power consumption due to high light conversion efficiency, and is small in size, thin and Suitable for light weight, yet infinitely scalable installation, very long lifetime semi-permanently (approximately 100,000 hours for blue, purple, or UV LEDs, approximately 30,000 hours for white LEDs), no thermal or discharge light emission Very fast response speed with no preheating, very simple lighting circuit, no discharge gas and filament, high impact resistance, safe and low environmental pollution, high repetition pulse operation It has the advantage of less fatigue of the optic nerve and full color.
  • Light source for liquid crystal display (LCD) back light such as digital cameras and personal digital assistants (PDAs), signal lamps, electronic signs, vehicle headlights and taillights, various electronic devices, office equipment, fax machines, etc. It is widely used for night light of remote control or surveillance camera, infrared communication, information display of outdoor billboard by various combination of red and green pixels, high precision electronic display, high quality indoor and outdoor lighting.
  • LCD liquid crystal display
  • PDAs personal digital assistants
  • the method for obtaining white light by the LED is as follows.
  • a white LED is adopted as a single LED that generates white light, and the surface of the white LED is coated with a phosphor, or the periphery or lens is mixed and molded, and a single LED having a specific wavelength is produced.
  • a method is used in which the excited light excites the phosphor to produce light of different wavelengths, which is mixed with the light produced by the single LED chip to obtain white light.
  • this conventional method uses a method of coating a phosphor directly on the surface of a blue, purple, or ultraviolet LED, or by mixing and molding a phosphor in a peripheral portion or a lens portion thereof.
  • the life of the LED is significantly shortened to about one third or less.
  • the emission color becomes uneven if a very homogeneous coating or dispersion distribution of the phosphor is not achieved.
  • the oldest type of white LED widely used is coated or molded with a yellow phosphor (typically yttrium-aluminum-garnet: Y3Al5O12: Ce, YAG-based compound) on an InGaN-based blue LED having a wavelength of 450 nm.
  • Blue light excites the YAG yellow phosphor and complements the short wavelength region of blue light having a narrow peak of the blue LED and yellow light having a broad peak by the YAG-based yellow phosphor to the human eye.
  • This technique which is recognized as white light, is disclosed in US Pat. No. 5,998,925 to Nichia.
  • this white light is a mixture of two wavelengths that are not completely complementary and only holds a partial spectrum of visible light. Therefore, the color rendering property is about 60-75 and is not recognized as white light close to natural light. Is not very satisfactory and the blue LED shows the highest efficiency in the excitation light source of about 405 nm, while the YAG phosphor is excited by the blue light of 450 to 460 nm, which leads to a low luminance, especially in the coating or molding of the YAG phosphor. Since it is difficult to guarantee homogeneous and uniform dispersibility, the uniformity and reproducibility of the product is low in the luminance and spectral distribution of white light, and the LED life is significantly shortened.
  • an object of the present invention is to provide a long life (about 100,000 hours) high brightness blue LED or a purple LED or optionally an ultraviolet LED without using a conventional high brightness white LED having a relatively short life (about 30,000 hours of service life). It is to provide a flat type LED lighting lamp that can significantly increase the life of the white light emitting LED lighting device by simply and easily obtaining the white light to yellow-white light for lighting.
  • the dot-shaped LED module plate is in the form of a square plate having a lattice-shaped LED mounting unit, so as to match a bar, square or rectangular lighting of various sizes. It can be used by cutting to provide a flat type LED lighting that increases the ease of use.
  • Still another object of the present invention is to provide a user or a builder who is not a producer to easily adjust the white light to a desired intensity easily and at low cost, or to use a relatively low-cost blue LED, purple LED, or ultraviolet LED instead of the existing expensive high-brightness white LED. Using to provide a flat type LED lighting that can obtain a gentle white light.
  • Still another object of the present invention is to provide a flat LED lighting lamp that can effectively and easily eliminate the problem of occurrence of uneven distribution of light emission hue due to uneven distribution of the phosphor for illumination color conversion or coating.
  • Still another object of the present invention is to provide a flat LED lighting lamp that effectively alleviates the glare caused by high-brightness white LED lighting to obtain a more gentle and comfortable lighting, and can reduce the deterioration of lighting equipment due to its excellent heat resistance. will be.
  • the flat type LED lighting lamp includes a dot-type LED module plate having a plurality of mounting holes such that a plurality of LED mounting units are installed in a matrix form in rows and columns; A plurality of LEDs or LED chips mounted on the LED mounting unit and electrically connected to a power source; An illumination color conversion fluorescent plate for converting emission colors emitted from the plurality of LEDs or LED chips installed on the dot-type LED module plate; Characterized in that it comprises a transparent light emitting plate for emitting the light emitted by the conversion is converted in the fluorescent plate for illumination color conversion to the outside.
  • the dot-type LED module plate is preferably cut into at least one LED unit unit to form a flat type LED lighting.
  • a light diffusion plate is interposed between the illumination color conversion fluorescent plate and the LED module plate or between the transparent light emitting plate and the illumination color conversion fluorescent plate so that the light emission color conversion is performed by scattering the illumination color conversion fluorescent plate.
  • the LED or the LED chip is preferably connected to the power source by wiring to the "+" and "-" lattice electrode plate formed before and after the LED module plate, respectively.
  • each of the LED mounting unit is preferably formed in the inner end portion corresponding to each mounting hole of the dot-type LED module plate.
  • a reflecting plate is further formed at the rear and side portions of the LED module plate.
  • the fluorescent plate for illumination color conversion is uniformly dispersed in the matrix resin and the phosphor, and the light diffuser is also uniformly dispersed in the matrix resin.
  • the illumination color conversion fluorescent plate and the light diffusion plate may be integrally formed.
  • the matrix resin may be a silicone resin, polymethyl pentene resin, polyether sulfon resin, polyether imide resin, polyarylate resin, and poly It is preferable that it is 1 type of heat resistant transparent matrix selected from the group which consists of a methyl methacrylate resin.
  • the illumination color conversion phosphor is a YAG-based (YGd) 3 Al 5 O 12: Ce yellow phosphor for converting a blue LED into a white LED.
  • the illumination color conversion phosphor is a red phosphor and a green phosphor, wherein the red phosphor is Y 2 O 2 S: Eu, Gd, Li 2 TiO 3: Mn, LiAlO 2: Mn, 6MgO As 2 O 5: Mn 4 +, or 3.5MgO 0.5MgF 2 GeO 2: Mn 4+
  • the green phosphor is ZnS: Cu, Al, Ca2MgSi2O7: Cl, Y3 (GaxAl1-x) 5O12: Ce (0 ⁇ x ⁇ 1), La2O3ll 11Al2O3: Mn, or Ca8Mg (SiO4) 4Cl2: Eu, Mn
  • the illuminating color conversion phosphor is a red phosphor, a green phosphor and a blue phosphor
  • the red phosphor is Y 2 O 2 S: Eu, Gd, Li 2 TiO 3: Mn, LiAlO 2: Mn, 6MgO ⁇ As 2 O 5: Mn 4+, or 3.5 MgO ⁇ 0.5MgF 2 ⁇ .
  • GeO2 is Mn4 +
  • the above-mentioned green phosphor is ZnS: Cu, Al, Ca2MgSi2O7: Cl, Y3 (GaxAl1-x) 5O12: Ce (0 ⁇ x ⁇ 1), La2O3-11Al2O3: Mn, or Ca8Mg (SiO4) 4Cl2: Eu, Mn
  • the above-mentioned blue phosphor is BaMgAl10O17 or (Sr, Ca, BaMg) 10 (PO4) 6Cl2: Eu, which is preferable for converting a purple LED or an ultraviolet LED to a white LED.
  • the light diffusing body is a silicone resin (refractive index 1.43), polyacrylate (polyacrylate: refractive index 1.49), polyurethane (polyurethane: refractive index 1.51), polyethylene (polyethylene: refractive index 1.54), polypropylene (polypropylene: refractive index 1.46 ), Nylon (Nylon: refractive index 1.54), polystyrene (polystyrene: 1.59), polymethylmethacrylate (polymethylmethacrylate: 1.49), polycarbonate (polycarbonate: 1.59), silica (silica: 1.47), alumina : Refractive index 1.50 to 1.56), glass (glass: refractive index 1.51), calcium carbonate (CaCO3: refractive index 1.51), talc (talc: refractive index 1.56), mica (mica: refractive index 1.56), barium sulfate (BaSO4: refractive index 1.63), oxide Zinc (ZnO:
  • the phosphor and / or optical diffuser for illumination color conversion in a heat-resistant transparent resin matrix (matrix) in front of the dot (dot) LED module plate installed in a matrix form By installing the mixed-color fluorescent plate and light diffusion plate, it is simple and inexpensive from long-life high-brightness blue LED, purple LED or ultraviolet LED without using relatively short-lived and expensive high-brightness white LED.
  • the mixed-color fluorescent plate and light diffusion plate it is simple and inexpensive from long-life high-brightness blue LED, purple LED or ultraviolet LED without using relatively short-lived and expensive high-brightness white LED.
  • FIG. 1 is a schematic exploded perspective view of a flat panel LED lighting according to the present invention.
  • Figure 2 is an enlarged view of the LED module plate of the flat LED lamp according to the present invention.
  • FIG. 3 is a schematic cross-sectional view of the flat LED lamp according to the present invention.
  • FIG. 4 is an enlarged schematic view of an illuminating plate for converting illumination color and a light diffusion plate sheet or film applied to FIG.
  • 5 to 7 are schematic side cross-sectional views each showing an example of an LED mounting unit according to another embodiment of the present invention.
  • FIG. 1 is a schematic exploded perspective view of a flat panel LED lighting according to the present invention
  • Figure 2 is an enlarged view of the LED module plate of the flat panel LED lighting according to the present invention
  • Figure 3 is a flat type LED lighting lamp according to the present invention
  • FIG. 4 is a schematic cross-sectional view, and FIG. 4 will be described together for convenience as an enlarged schematic view of an illumination color conversion fluorescent plate and a light diffusion plate sheet or film applied to FIG. 1.
  • a dot-type LED module is a plurality of mounting holes 13 so that a plurality of LED mounting unit 11 is installed in a matrix form A plate 10, a plurality of LEDs 12 mounted on the LED mounting unit 11 and electrically connected to the printed circuit board 40, and an illumination color for converting the color of light emitted from the LEDs 12.
  • Conversion fluorescent plate 20 a transparent light emitting plate 30 for emitting light emitted and converted by the illumination color conversion fluorescent plate 20, the LED module plate 10, the illumination color conversion fluorescent plate ( 20) and the rectangular housing 60 for accommodating and fixing the transparent light emitting plate 30 therein.
  • the transparent light emitting plate 30 for emitting the light to the outside is preferably a transparent material such as acrylic, glass or PVC
  • the housing 60 is made of a substantially thin rectangular box shape simply attached to the wall surface It is preferable to be inserted into the groove formed in the wall to be installed.
  • the transparent light emitting plate 30 and the fluorescent color converting plate 20 have separate shapes, but the phosphor or light diffuser (powder or sheet) to be described below is integrally applied to the transparent light emitting plate. It may be formed, but the present invention is not limited thereto.
  • the illumination color conversion is selectively performed by scattering through the light diffusion plate 21 between the illumination color conversion fluorescent plate 20 and the LED module plate 10 or between the transparent light emitting plate 30 and the illumination color conversion fluorescent plate 20.
  • the fluorescent plate 20 can perform sufficient light emission color conversion.
  • the reflective module 50 is formed on the rear side of the LED module plate 10 and the printed circuit board 40 to selectively reflect the light emitted to the rear side to the front side to perform a function as a heat sink. It is.
  • the dot-type LED module plate 10 is in the form of a substantially rectangular lattice plate, and a plurality of lattice-shaped mounting holes such that a plurality of rectangular LED mounting units 11 are arranged in rows and columns in a matrix form. 13, the plurality of LEDs 12 are electrically connected in a dot form to the printed circuit board 40 through the circular holes 11a of the LED mounting unit 11.
  • the mounting hole 13 has a substantially square shape in the illustrated example, but may have various shapes such as a circle, an ellipse, or a polygon such as a triangle, a rectangle, a pentagon, a rhombus, and the like.
  • the LEDs 12 may be attached to all the LED mounting units 11 because sufficient brightness may be exhibited through the fluorescent plate 20 and the light diffusion plate 21 for converting the illumination colors. There is no need to install it.
  • a plurality of LEDs 12 are mounted through circular holes 11a (circular grooves, elliptical or polygonal grooves (triangular, square, pentagonal, etc.) of the LED mounting unit 11).
  • the printed circuit board 40 electrically connected to the LEDs 12 is also mounted on the front and rear surfaces of the dot-type LED module plate 10. That is, a plurality of LEDs 12 mounted as a structure for connecting " + " and "-" lattice-shaped electrode plates 41 and 42, respectively, before and after the dot-shaped LED module plate 10 in a matrix form. Power supply).
  • the "+” and “-" lattice type electrode plates 41 and 42 have a printed circuit board 40 structure formed before and after the LED module plate 10, but various types of printed circuit boards are shown.
  • a structure (simply including a power wiring connection structure of "+” and “-” electrodes) is also possible and does not limit the structure and type in the present invention.
  • the dot-shaped LED module plate 10 is a rectangular plate shape having a grid-shaped LED mounting unit 11, square or rectangular lighting lamps of various sizes (transparent) It can be used to cut to match the light emitting plate 30) and the convenience of use is increased.
  • the fluorescent color plate 20 for converting the illumination color is also in a substantially rectangular plate shape and is spaced a predetermined distance in front of the dot type LED module plate 10 on which the plurality of LEDs 12 are mounted in the housing 60. It is attached. Therefore, as will be described later, the LED 12 according to the present invention housing the appropriate illumination color conversion fluorescent plate 20 according to the present invention irrespective of the predetermined color tone, such as blue LED, purple LED, ultraviolet LED, white LED. The light emission color can be converted simply and easily by just inserting it inside.
  • the upper surface of the transparent light emitting plate 30 made of a transparent material such as acrylic, glass, or PVC to emit light to the outside has a form of a smooth surface, but the upper surface of the comb pattern or a plurality of It may be in the form of a dot top surface.
  • it may be a shape having an opening in the center of the upper surface if necessary, may be a convex shape projecting forward, a smooth surface or a concave surface, or may be any other shape.
  • the fluorescent plate 20 and the light diffusion plate 21 for converting illumination colors are manufactured in the form of a sheet or a film, respectively.
  • the phosphor 20b and the pigment 20c are homogeneously dispersed in the matrix resin 20a in the illumination color conversion fluorescent plate 20, and the light diffusion plate 21 is also the matrix resin 21a.
  • the light diffuser (bead) 21b and the pigment 21c are homogeneously dispersed in the inside.
  • the fluorescent plate 20 and the light diffusing plate 21 for illumination color conversion are formed in the form of two sheets or films separated, the pigment, the phosphor and the light diffuser are uniformly dispersed in the above-described matrix resin. Of course, it can be made in the form of one sheet or film.
  • the fluorescent plate 20 and the light diffusing plate 21 for illumination color conversion are applied to a flat panel LED lamp independently without touching the light emitting LEDs themselves, and the light emitting colors of the LEDs are simple and inexpensive. Can be converted from blue, purple, and ultraviolet light to white light to yellow white light, and the phosphor 20b of the fluorescent plate 20 for illumination color conversion by scattering by the light diffuser (bead) 21b of the optical diffuser 21. ) Makes it possible to perform sufficient light emission color conversion, so that the strictly homogeneous distribution of the phosphor is not particularly a problem, and it can remarkably reduce or alleviate eye sting and fatigue caused by the high brightness of the LED when looking directly at a light source. .
  • a dichroic filter having a refractive index of 1.4 to 1.6 may be disposed on the bottom surface of the optical diffuser 21 as described above, for example, to allow light having a wavelength of 500 nm or less and reflect light having a wavelength longer than that. have.
  • the dichroic filter contributes to the stabilization of the light emitting module by forming a dielectric layer such as neodymium or holmium on the upper surface of the phosphor, thereby reducing the damage of the LED device due to backscattering of the light by the phosphor. It is also possible to increase the service life of the.
  • matrix resins 20a and 21a those having excellent transparency and heat resistance can be preferably used. If the transparency and heat resistance are good, there is no particular limitation in the present invention. However, as the preferred heat resistant transparent matrix resin, silicone resins are preferred. , Polymethyl pentene resin, polyether sulfon resin, polyether imide resin, polyarylate resin, or polymethyl methacylate resin. The amount of these matrix resins added may range from 50 to 99% by weight, preferably from 82 to 97% by weight, based on the total weight of the composition.
  • the phosphor 20b for illumination color conversion into white light applicable to the present invention
  • a blue LED when using a blue LED, only a YAG-based yellow phosphor known in the art may be used, but it is preferable to use a green phosphor and a red phosphor. It is preferable at the point which can obtain three wavelengths of natural white light, and when using a purple LED or an ultraviolet LED, it is preferable to use a green fluorescent substance, a red fluorescent substance, and a blue fluorescent substance for the same reason.
  • the white LED obtained when using a blue LED and a YAG yellow phosphor is typically (YGd) 3 Al 5 O 12: Ce developed by Nichia, and the above-mentioned YAG yellow phosphor is excited at 550 to 560 nm.
  • the present invention is not limited thereto, but various ones known in the art can be used 430 nm to 480 nm
  • red phosphors that can be excited in the wavelength region of include Y2O2S: Eu, Gd, Li2TiO3: Mn, LiAlO2: Mn, 6MgO® As2O5: Mn4 +, or 3.5MgO0.5MgF2 GeO2: Mn4 +, 515nm-
  • green phosphors that can be excited in the wavelength region of 520 nm include ZnS: Cu, Al, Ca2MgSi2O7: Cl, Y3 (GaxAl1-x) 5O12: Ce (0 ⁇ x ⁇ 1), La2O3O 11Al2O3: Mn, Ca8Mg (SiO4 ) 4
  • a three-wavelength white LED using a blue LED and red and green phosphors excites a mixture of red and green phosphors to produce red and green light mixed with the blue light of the blue LED chip to emit three wavelength white light.
  • red and green phosphors that can be excited by the blue LEDs described above are stable in oxide form and have an extended lifetime.
  • the above-mentioned green phosphor and red phosphor are mixed at an appropriate ratio and directly coated directly or indirectly on a blue LED chip to obtain 3-wavelength white light, and are mounted as a separate member thereof without being directly related to the LED. It is to be noted that 3-wavelength white light is obtained by forming a film or sheet of the fluorescent plate 20 for illumination color conversion.
  • the red phosphor is preferably Li 2 TiO 3: Mn when the emission peak wavelength is about 659 nm, and when the emission peak wavelength is about 670 nm, LiAlO 2: Mn is preferable and the emission peak wavelength is about 650 nm.
  • 6MgO.As2O5: Mn4 + is preferred, and in the case where the emission peak wavelength is about 650 nm, 3.5MgO.0.5MgF2.GeO2: Mn4 + is preferable.
  • the green phosphor is preferably La 2 O 3 ⁇ 11Al 2 O 3: Mn when the emission peak wavelength is about 520 nm, and Y 3 (GaxAl 1-x) 5 O 12: Ce (0) when the emission peak wavelength is about 516 nm. ⁇ x ⁇ 1) is preferred, and Ca8Mg (SiO4) 4Cl2: Eu, Mn is preferred when the emission peak wavelength is about 515 nm.
  • the green phosphor and the red phosphor may be mixed in various ratios and may form an intermediate color LED such as pink or blue white.
  • the blue LED chip may be InGaN type, SiC type or ZnSe type.
  • BaMgAl 10 O 17 or (Sr, Ca, BaMg) 10 (PO 4) 6 Cl 2: Eu may be used as the blue phosphor.
  • the white light obtained can be appropriately adjusted within the range of 3200 to 7500K according to the needs of the consumer by appropriate combination of red, blue and green phosphors.
  • the content of the red phosphor, the blue phosphor, the green phosphor, or a combination thereof is 0.8 to 30% by weight, preferably 2.0 to 15% by weight, based on the total weight of the composition, and red phosphor and green phosphor may be used for the blue LED.
  • the weight ratio is 1: 0.2 to 1.2, preferably 1: 0.3 to 0.8
  • the weight ratio when using the red phosphor, the blue phosphor, and the green phosphor with respect to the purple LED or the ultraviolet LED is also 1. : 0.2 to 1.2: 0.2 to 1.2, preferably 1: 0.3 to 0.8: 0.3 to 0.8.
  • the content of the phosphor is less than 0.8 wt% based on the total weight of the composition, satisfactory white light may not be obtained. On the contrary, when the content of the phosphor exceeds 30 wt%, the luminance may be excessively lowered.
  • examples of the light diffuser 21b to be added include a silicone resin (refractive index 1.43), polyacrylate (refractive index 1.49), polyurethane (refractive index 1.51), polyethylene (polyethylene: 1.54 refractive index) , Homopolymers such as polypropylene (refractive index 1.46), nylon (Nylon: refractive index 1.54), polystyrene (polystyrene: 1.59), polymethylmethacrylate (refractive index 1.49), polycarbonate (polycarbonate: 1.59)
  • Organic light diffusing agents such as copolymers of monomers thereof; Silica (refractive index 1.47), alumina (refractive index 1.50 to 1.56), glass (glass: refractive index 1.51), calcium carbonate (CaCO3: refractive index 1.51), talc (talc: refractive index 1.56), mica (mica: 1.56)
  • Inorganic light diffusing agents such as barium sulfate (BaSO 4: refr
  • the light diffuser 21b has an average particle diameter of 0.2 to 30 ⁇ m, preferably 0.5 to 5 ⁇ m, and specifically 1.0 to 3.5 ⁇ m, and the amount of the light diffuser 21b is 0.2 to 20 wt% based on the total weight of the composition, Preferably it is 0.5-10 weight%, Specifically, 1.0-3.0 weight%.
  • the average particle diameter of the light diffuser 21b is less than 0.2 ⁇ m, transparency or light transmittance may be inferior, and if the average particle diameter exceeds 30 ⁇ m, the excitation of the phosphor may be insufficient or uniform. Likewise not preferred.
  • the amount of the light diffuser 21b added to the entire composition is less than 0.2% by weight, the excitation of the phosphor may be insufficient or uneven, which is undesirable. Conversely, if the amount exceeds 20% by weight, transparency or light transmittance may be inferior. It is not preferable because there is a possibility of doing so.
  • inorganic or organic pigments may be included in an amount of 0.1 to 3.0% by weight, preferably 0.1 to 1.0% by weight, depending on the degree of preference such as illumination color.
  • organic pigments are preferable.
  • Pigments, azo pigments, indanthrene pigments, thioindigo pigments, perylene pigments, dioxazine pigments, quinatridone pigments, phthalocyanine pigments, quinophthalone pigments can be used a variety of known.
  • yellow pigments that give a warm feeling include monoazo, diazo, naphthalazobenzene, yellow wall, rhubarb or any mixed pigments thereof, but these are optional in the present invention.
  • 5 to 7 are schematic side cross-sectional views each showing an example of an LED mounting unit according to another embodiment of the present invention.
  • a large rectangular dot-shaped LED module plate is formed of a single LED unit unit and a plurality of LED unit units of a rod type. Or, it may be cut into a plurality of LED unit units of square or rectangular shape of a slightly smaller square shape, and can be cut and used to meet lighting of various sizes and various shapes.
  • the fluorescent plate for converting the illumination color, light diffusing plate and reflecting plate is also directly cut together can be applied directly to the flat LED lighting, there is a great advantage that the ease of use is greatly increased.
  • the LED chip 112 has a "+" electrode plate 141 and "" in the mounting hole 113. Are electrically connected to and wired to the electrode plate 142, and the fluorescent plate 120 and the light diffusing plate 121 for converting the color are sequentially formed on the front surface thereof to form a rod, square, or rectangle. It can be cut into single or multiple LED units and used as flat LED lighting.
  • the reflective plate 150 is formed at the rear side of the “ ⁇ ” electrode plate 142, but the reflective plate 150 may be replaced with the “ ⁇ ” electrode plate. In this case, there is an advantage that the LED chip 112 is more stably seated on the front surface of the reflector plate 150.
  • the "+" electrode plate 141 and the "-" electrode plate 142 as the printed circuit board (electrode plate) is separated from the front and rear of the LED module plate 110, two electrodes All the plates may be arranged together on the front or rear of the LED module plate (110).
  • the LED chip 212 is stable to the "+" electrode plate 241 and the "-" electrode plate 242, respectively. It is substantially the same as that of FIG. 5A except that it is disposed and wired at an inner end portion corresponding to each mounting hole 213 of the dot-shaped LED module plate 210 for electrical connection.
  • the LED chip 312 is attached to the "+" electrode plate 341 and the "-" electrode plate 342
  • An additional reflector in a diagonal form to each mounting hole 313 is disposed and wired at an inner end of the dot-shaped LED module plate 310 corresponding to each mounting hole 313 for stable electrical connection. It is substantially the same as that of FIG. 5B except that 360 is extended to “-” electrode plate 242.
  • the present invention is provided by installing an illumination color conversion phosphor and / or an optical diffuser in a heat-resistant transparent resin matrix on a front of a dot type LED module plate installed in a matrix form, and a light diffusion plate.
  • an illumination color conversion phosphor and / or an optical diffuser in a heat-resistant transparent resin matrix on a front of a dot type LED module plate installed in a matrix form, and a light diffusion plate.
  • a white to yellowish white light for a long lifespan without using a relatively short-lived and expensive high-brightness white LED and by using a light diffuser.
  • the present invention relates to a flat type LED lamp that can more effectively alleviate the glare caused by high-brightness LED lighting to obtain a more gentle and comfortable lighting.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Led Device Packages (AREA)

Abstract

La présente invention concerne une lampe DEL à plaque plane. Une plaque fluorescente de conversion de couleur d'éclairage et une plaque de diffusion de la lumière, sur lesquelles un phosphore de conversion de couleur d'éclairage et/ou un corps de diffusion de la lumière sont mélangés, sont installées sur une matrice polymère transparente thermorésistante disposée en un réseau sur une plaque à modules DEL à points, pour obtenir une lumière blanche ou une lumière jaune-blanche assurant un éclairage pratique et bon marché à partir de DEL bleues, violettes ou ultraviolettes présentant une durée de vie prolongée et une grande luminance, même en l'absence de DEL blanches à grande luminance, qui sont onéreuses. La lampe DEL à plaque plane de l'invention comprend: une plaque à modules DEL à points sur laquelle plusieurs unités de montage de DEL sont disposées en un réseau de rangées et de colonnes; plusieurs DEL installées sur les unités de montage de DEL et raccordées électriquement à une carte de circuit imprimé; une plaque fluorescente de conversion de couleur d'éclairage pour convertir la couleur émise de la pluralité de DEL disposées dans la plaque à modules DEL à points; une plaque électroluminescente transparente pour émettre la lumière convertie et émise de la plaque fluorescente de conversion de couleur d'éclairage vers l'extérieur; et un boîtier pour loger et fixer la plaque à modules DEL, la plaque fluorescente de conversion de couleur d'éclairage, et la plaque électroluminescente transparente.
PCT/KR2009/002794 2008-09-09 2009-05-27 Lampe del à plaque plane Ceased WO2010030069A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20080088561A KR100981960B1 (ko) 2008-09-09 2008-09-09 평판형 엘이디 조명등
KR10-2008-0088561 2008-09-09

Publications (1)

Publication Number Publication Date
WO2010030069A1 true WO2010030069A1 (fr) 2010-03-18

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Application Number Title Priority Date Filing Date
PCT/KR2009/002794 Ceased WO2010030069A1 (fr) 2008-09-09 2009-05-27 Lampe del à plaque plane

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KR (1) KR100981960B1 (fr)
WO (1) WO2010030069A1 (fr)

Cited By (2)

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US20120061227A1 (en) * 2010-09-09 2012-03-15 Ching-Hsiung Chu Structure of press switch
US10663646B2 (en) 2015-07-08 2020-05-26 Bambu Vault Llc LED panel lighting system

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013024913A1 (fr) * 2011-08-17 2013-02-21 삼성전자주식회사 Appareil électroluminescent
US9797573B2 (en) * 2013-08-09 2017-10-24 Performance Indicator, Llc Luminous systems
KR101690512B1 (ko) 2015-09-03 2016-12-29 에이펙스인텍 주식회사 유지보수 및 조립성이 향상되도록 하는 초슬림 led 조명등의 컨버터 고정장치
KR101691488B1 (ko) 2015-09-03 2017-01-02 에이펙스인텍 주식회사 광학성, 발열성, 유지보수, 시공성 및 절연기능을 향상시킨 초슬림 led 조명등
KR102396325B1 (ko) * 2015-10-12 2022-05-13 삼성전자주식회사 엘이디 디스플레이 장치의 광학 부재 및 엘이디 디스플레이 장치
KR101710715B1 (ko) 2016-05-23 2017-03-02 지엘레페주식회사 조명용 형광 확산 보드

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JP2006310303A (ja) * 2005-04-29 2006-11-09 Samsung Electronics Co Ltd 自発光液晶表示装置
KR20060133484A (ko) * 2005-06-20 2006-12-26 히다치 막셀 가부시키가이샤 조명장치, 표시장치, 광학시트 및 그 제조방법
JP2008116849A (ja) * 2006-11-07 2008-05-22 Sony Corp 表示装置

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JP2006310303A (ja) * 2005-04-29 2006-11-09 Samsung Electronics Co Ltd 自発光液晶表示装置
KR20060133484A (ko) * 2005-06-20 2006-12-26 히다치 막셀 가부시키가이샤 조명장치, 표시장치, 광학시트 및 그 제조방법
JP2008116849A (ja) * 2006-11-07 2008-05-22 Sony Corp 表示装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120061227A1 (en) * 2010-09-09 2012-03-15 Ching-Hsiung Chu Structure of press switch
US10663646B2 (en) 2015-07-08 2020-05-26 Bambu Vault Llc LED panel lighting system

Also Published As

Publication number Publication date
KR20100029878A (ko) 2010-03-18
KR100981960B1 (ko) 2010-09-14

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