WO2014033997A1 - Lampe de type à ampoule - Google Patents

Lampe de type à ampoule Download PDF

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Publication number
WO2014033997A1
WO2014033997A1 PCT/JP2013/003897 JP2013003897W WO2014033997A1 WO 2014033997 A1 WO2014033997 A1 WO 2014033997A1 JP 2013003897 W JP2013003897 W JP 2013003897W WO 2014033997 A1 WO2014033997 A1 WO 2014033997A1
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WO
WIPO (PCT)
Prior art keywords
light
light emitting
light guide
emitting unit
globe
Prior art date
Application number
PCT/JP2013/003897
Other languages
English (en)
Japanese (ja)
Inventor
洋介 藤巻
次弘 松田
康輔 菅原
Original Assignee
パナソニック株式会社
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 パナソニック株式会社 filed Critical パナソニック株式会社
Publication of WO2014033997A1 publication Critical patent/WO2014033997A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0018—Redirecting means on the surface of the light guide
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • 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]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
    • G02B6/001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type the light being emitted along at least a portion of the lateral surface of the fibre
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0028—Light guide, e.g. taper

Definitions

  • the present invention relates to a light bulb shaped lamp, and more particularly to a light bulb shaped lamp including a semiconductor light emitting element such as a light emitting diode (LED).
  • a semiconductor light emitting element such as a light emitting diode (LED).
  • LEDs semiconductor light-emitting elements such as LEDs are expected to be new light sources for various lamps because of their small size, high efficiency, and long life, and research and development of LED lamps using LEDs as light sources are being promoted.
  • Patent Document 1 discloses a conventional bulb-type LED lamp.
  • the conventional light bulb shaped LED lamp disclosed in Patent Document 1 includes a globe, a substrate disposed in the globe, and an LED mounted on the substrate.
  • an LED is used as a chip-like light emitting element that forms a point light source. Therefore, for example, when a highly transparent glove is employed, the light from the light emitting element is directly viewed as light particles.
  • the present invention has been made in consideration of the above-described conventional problems, and an object of the present invention is to provide a light bulb shaped lamp having a semiconductor light emitting element as a light source and having a light emission characteristic close to an incandescent light bulb using a filament coil.
  • a light bulb shaped lamp is a light emitting unit mounted on a globe and a substrate, and is disposed inside the globe and includes one or more semiconductor light emitting elements. And a light guide that is disposed inside the globe and transmits light incident from the light emitter and emits the light from the surface, the light guide being separate from the substrate, and the light guide Is a plurality of light extraction portions arranged discretely on the surface, each having a plurality of light extraction portions which are concave or convex portions provided on the surface.
  • each of the plurality of light extraction portions may be a hemispherical concave shape or a convex shape portion.
  • the plurality of light extraction portions may be arranged side by side in a direction intersecting the lamp axis in the light guide.
  • the light bulb shaped lamp according to one aspect of the present invention further includes, for example, a support column that is erected on a pedestal disposed in the opening of the globe and extends from the pedestal toward the globe.
  • the light emitting unit and the light guide may be arranged in a central region of the globe by being supported by an end portion of the support column opposite to the pedestal.
  • the light emitting unit emits light in a direction parallel to the lamp axis and opposite to the support column, and in a direction intersecting the lamp axis
  • the light guide may have a recessed housing portion that houses the light emitting portion on the surface on the column side.
  • the light emitting unit emits light in a direction intersecting a lamp axis, and the light guide body of the light emitting unit at the end of the support column. It is good also as a side and arrange
  • the light bulb shaped lamp according to an aspect of the present invention further includes, for example, a pedestal disposed in the opening of the globe, the light emitting unit is disposed in the pedestal, and the light guide is It is provided so that it may extend toward the inside of the globe from the light emitting portion, and the plurality of light extraction portions are provided at an end portion of the light guide opposite to the pedestal, so that the globe It may be arranged in the central region.
  • the light guide is opposite to the vertical axis extending from the pedestal into the globe and the pedestal of the vertical axis.
  • a horizontal axis portion connected to an end portion on the side, having a long horizontal axis portion in a direction intersecting with the vertical axis portion, and the plurality of light extraction portions on the horizontal axis portion, It is good also as arrange
  • the light guide may have an inclined surface portion for changing the traveling direction of light incident from the light emitting portion and emitting the light to the outside.
  • a light bulb shaped lamp that has a semiconductor light emitting element as a light source and has light emission characteristics close to an incandescent light bulb using a filament coil.
  • an illumination effect similar to that of incandescent light bulbs can be provided with lower power consumption than incandescent light bulbs.
  • FIG. 1 is a perspective view of a light bulb shaped lamp according to an embodiment.
  • FIG. 2 is a cross-sectional view of the light bulb shaped lamp according to the embodiment.
  • FIG. 3 is a cross-sectional view showing the shape of the light extraction portion according to the embodiment.
  • FIG. 4 is a diagram illustrating a configuration of the light guide and the light emitting unit according to the first modification of the embodiment.
  • FIG. 5 is a diagram illustrating a configuration of the light guide and the light emitting unit according to the second modification of the embodiment.
  • FIG. 6 is a diagram illustrating a configuration of a light guide and a light emitting unit according to Modification 3 of the embodiment.
  • FIG. 1 is a perspective view of a light bulb shaped lamp according to an embodiment.
  • FIG. 2 is a cross-sectional view of the light bulb shaped lamp according to the embodiment.
  • FIG. 3 is a cross-sectional view showing the shape of the light extraction portion according to the embodiment.
  • FIG. 4 is
  • FIG. 7 is a diagram illustrating a configuration of a light guide and a light emitting unit according to Modification 4 of the embodiment.
  • FIG. 8 is a diagram illustrating a configuration of a light guide and a light emitting unit according to Modification 5 of the embodiment.
  • FIG. 9 is a perspective view illustrating configurations of a light guide body and a light emitting unit according to Modification 6 of the embodiment.
  • FIG. 10 is a perspective view showing an external appearance of a light bulb shaped lamp according to Modification 7 of the embodiment.
  • FIG. 11 is a diagram illustrating a configuration of a light guide and a light emitting unit according to Modification 7 of the embodiment.
  • FIG. 12 is a diagram illustrating a configuration of a light guide and a light emitting unit according to Modification 8 of the embodiment.
  • FIG. 13 is a perspective view illustrating configurations of a light guide body and a light emitting unit according to Modification 9 of the embodiment.
  • FIG. 14 is a diagram illustrating an example of the shape of the light extraction unit having the sub extraction unit.
  • FIG. 15 is a diagram illustrating an example of the shape of the light extraction portion which is a hemispherical convex portion.
  • FIG. 16 is a diagram illustrating a shape example of a light guide body having a U-shaped portion as a whole.
  • FIG. 17 is a schematic sectional drawing of an illuminating device provided with the lightbulb-shaped lamp which concerns on embodiment.
  • FIG. 1 is a perspective view of a light bulb shaped lamp 100 according to an embodiment.
  • FIG. 2 is a cross-sectional view of the light bulb shaped lamp 100 according to the embodiment.
  • the drive circuit 120 is not a sectional view but a side view.
  • the light bulb shaped lamp 100 is, for example, a light bulb shaped LED lamp that is a substitute for a light bulb shaped fluorescent light or an incandescent light bulb.
  • the light bulb shaped lamp 100 is a light emitting unit 300 mounted on a globe 140 and a substrate 105, which is disposed inside the globe 140 and has one or more semiconductor light emitting elements 112, and a light guide 200. With.
  • the light guide 200 is a separate body from the substrate 105, and is disposed inside the globe 140.
  • the light guide 200 transmits light incident from the light emitting unit 300 and emits it from the surface.
  • the light guide 200 includes a plurality of light extraction portions 201 that are discretely arranged on the surface, and each has a plurality of light extraction portions 201 that are concave or convex portions provided on the surface.
  • the light bulb shaped lamp 100 further includes a drive circuit 120 for supplying predetermined power to the light emitting unit 300, a housing 160 that houses the drive circuit 120 therein, and a base that receives power from the outside. 180.
  • a drive circuit 120 for supplying predetermined power to the light emitting unit 300
  • a housing 160 that houses the drive circuit 120 therein
  • a base that receives power from the outside. 180.
  • an envelope is constituted by the globe 140, the housing 160, and the base 180.
  • each component of the light bulb shaped lamp 100 will be described with reference to FIGS. 1 and 2.
  • the casing 160 is a structure that houses the drive circuit 120 therein, and in this embodiment, the light bulb shaped lamp 100 is provided as a single resin structure.
  • the housing 160 may be configured by a plurality of members such as a circuit case that houses the drive circuit 120 and a cover that covers the circuit case.
  • the globe 140 is a hollow member made of silica glass that is transparent to visible light, for example.
  • the globe 140 does not need to be transparent, and the material may not be silica glass.
  • the globe 140 may be a hollow member having light transmissivity that transmits light from the light guide 200 disposed therein.
  • the light emitting unit 300 is a light emitting device having one or more semiconductor light emitting elements 112.
  • the light emitting unit 300 is a surface mount (SMD) type LED module.
  • SMD surface mount
  • the light emitting unit 300 includes a resin molded package 300a, a plurality of semiconductor light emitting elements 112 mounted in a cavity formed in the package 300a, and a phosphor containing the semiconductor light emitting elements 112. Resin 111.
  • a blue light emitting LED chip that emits blue light (hereinafter referred to as “blue LED chip”) is employed.
  • a gallium nitride blue LED chip made of an InGaN material and having a center wavelength of 440 nm to 470 nm is employed as the semiconductor light emitting device 112.
  • YAG yttrium, aluminum, garnet
  • YAG yttrium, aluminum, garnet
  • the yellow phosphor particles are excited by the blue light of the blue LED chip that is the semiconductor light emitting device 112 to emit yellow light. Therefore, white light generated by the mixed color of the excited yellow light and the blue light of the semiconductor light emitting device 112 is emitted from the light emitting unit 300.
  • the upper surface of the package 300a in the light emitting unit 300 is open, and the light guide 200 is connected to the opening. That is, light from the plurality of semiconductor light emitting elements 112 is transmitted through the light guide 200 and emitted to the outside.
  • the light emitting unit 300 is provided in the light bulb shaped lamp 100 by attaching the substrate 105 on which the light emitting unit 300 is mounted to the end of the support column 151 with an adhesive or a screw.
  • the substrate 105 for example, a ceramic substrate made of alumina or the like which is a rectangular plate-like substrate in plan view is employed.
  • the material of the substrate 105 is not limited to alumina.
  • a translucent ceramic substrate made of aluminum nitride, a transparent glass substrate, a substrate made of crystal, a sapphire substrate, a resin substrate, or the like can be adopted as the substrate 105.
  • a flexible substrate or a rigid flexible substrate can be adopted as the substrate 105.
  • the support column 151 is erected on a pedestal 150 disposed in the opening 141 of the globe 140 and is provided so as to extend from the pedestal 150 into the globe 140.
  • the light emitting unit 300 and the light guide 200 according to the present embodiment are arranged in the central region of the globe 140 by being supported by the end of the support column 151 on the side opposite to the pedestal 150.
  • the central region of the globe 140 is, for example, a spatial region within a distance of about 50% to 80% of the radius of the spherical portion from the center of the spherical portion of the globe 140.
  • the central region of the globe 140 generally corresponds to a region where the filament coil is disposed.
  • pillar 151 and the base 150 are comprised by the metal material (for example, aluminum alloy) or the resin material with high heat conductivity, it functions also as a heat radiating member for radiating the heat which generate
  • FIG. Thereby, for example, a decrease in light emission efficiency and a decrease in lifetime of the semiconductor light emitting element 112 due to a temperature rise are suppressed.
  • the light emitting unit 300 is provided with a pair of electrodes (not shown) electrically connected to the pair of lead wires 130a and 130b led out from the power output unit of the drive circuit 120.
  • the plurality of semiconductor light emitting elements 112 included in the light emitting unit 300 emit light.
  • the lead wires 130a and 130b are installed along the outer surface of the support column 151.
  • the lead wires 130a and 130b may be connected to the light emitting unit 300 through the interior of the support column 151, for example.
  • the drive circuit (circuit unit) 120 is a lighting circuit for lighting (light emission) the semiconductor light emitting element 112 of the light emitting unit 300, and supplies predetermined power to the light emitting unit 300.
  • the drive circuit 120 converts AC power supplied from the base 180 via the pair of lead wires 130c and 130d into DC power, and the DC power is supplied to the light emitting unit 300 via the pair of lead wires 130a and 130b. Supply.
  • the drive circuit 120 includes a circuit board 121 and a plurality of circuit elements (electronic components) 122 connected to the circuit board 121.
  • the circuit board 121 is a printed board on which metal wiring is patterned, and electrically connects the plurality of circuit elements 122 mounted on the circuit board 121 and also connects the plurality of circuit elements 122 and the lead wires 130a to 130d. And electrically connect.
  • the plurality of circuit elements 122 include, for example, ceramic capacitors (output-side smoothing capacitors) 122a and 122b, an electrolytic capacitor 122c, a choke coil 122d, a noise filter 122e, and the like.
  • the base 180 is a member provided at one end of the housing 160 that receives electric power supplied to the drive circuit 120 from the outside.
  • a threaded portion 162 having a thread is provided at the end of the cylindrical housing 160 opposite to the end connected to the opening 141 of the globe 140.
  • the base 180 is attached to the housing 160 by screwing the base 180 into the portion 162.
  • the base 180 is caulked in the radial direction in a state of being screwed to the screwing portion 162, whereby the base 180 is fixed to the housing 160.
  • the light guide 200 is a member that transmits light incident from the light emitting unit 300 and emits it from the surface.
  • the light guide 200 is a member having a thickness of about 2 to 4 mm formed of a highly light-transmitting resin such as an acrylic resin.
  • the light guide 200 is a plurality of light extraction portions 201 that are discretely arranged on the surface, each of which is a concave or convex portion provided on the surface.
  • the concave portion formed on the surface of the light guide 200 functions as the light extraction portion 201.
  • the plurality of light extraction portions 201 are arranged side by side in the direction intersecting the lamp shaft 190 in the light guide 200. More specifically, the plurality of light extraction portions 201 are arranged side by side in a direction orthogonal to the lamp axis 190 (including substantially the same, hereinafter the same).
  • the lamp shaft 190 is a shaft serving as a rotation center when the light bulb shaped lamp 100 is attached to the socket of the lighting device.
  • the lamp shaft 190 is parallel to the Z axis and coincides with the rotational axis of the base 180.
  • FIG. 3 is a cross-sectional view showing an example of the shape of the light extraction unit 201 according to the embodiment.
  • the light extraction part 201 has a concave shape. More specifically, the light extraction part 201 has a hemispherical concave shape, and its diameter is about 1 to 2 mm.
  • the light guide 200 Since the light extraction unit 201 has such a shape, the light guide 200 has higher light extraction efficiency than other portions. That is, the light extraction unit 201 can emit more light to the outside than the other parts. This will be briefly described below.
  • the light La incident perpendicularly to the surface of the light guide 200 is emitted to the outside.
  • the light Lb and Lc incident obliquely with respect to the surface is totally reflected, for example, on the surface (that is, the boundary surface between the light guide 200 and the outside of the light guide 200).
  • the luminance of the light extraction unit 201 in the light guide 200 is higher than the luminance of the part other than the light extraction unit 201.
  • the entire light guide 200 functions as a light emitter, and can shine the portions of the plurality of light extraction units 201 arranged discretely.
  • the light guide 200 in which a plurality of such light extraction portions 201 are arranged in a direction intersecting the lamp shaft 190 is arranged in the central region of the globe 140, so that an incandescent bulb using a filament coil is used.
  • the light emission state similar to is reproduced.
  • the light guide 200 creates, for example, a sprinkle peculiar to light emission by the filament coil.
  • the light bulb shaped lamp 100 is a light bulb shaped lamp 100 having a light emitting characteristic similar to an incandescent light bulb including a semiconductor light emitting element 112 as a light source and using a filament coil.
  • the configurations of the light guide 200 and the light emitting unit 300 may be other than the configurations shown in FIGS. Various modifications of the light guide 200 and the light emitting unit 300 will be described with reference to FIGS.
  • FIG. 4 is a diagram illustrating a configuration of the light guide 200 and the light emitting unit 300 according to the first modification of the embodiment.
  • sectional views are shown for various light guides, and side views are shown for various light emitting parts. Yes.
  • the light guide 200 may include an inclined surface portion 202 for changing the traveling direction of light incident from the light emitting portion 300 and emitting the light to the outside.
  • the light guide 200 shown in FIG. 4 has an inclined surface portion 202 at a position corresponding to a position directly above the light emitting portion 300.
  • a part of the light incident on the light guide 200 from the light emitting unit 300 and traveling straight upward is at least left and right in FIG. 4 (a direction parallel to the X-axis, The same shall apply hereinafter.
  • FIG. 5 is a diagram illustrating a configuration of the light guide 210 and the light emitting unit 310 according to the second modification of the embodiment.
  • the light guide 210 shown in FIG. 5 has a recessed housing portion 211 that houses the light emitting portion 310 on the surface on the column 151 side.
  • the light emitting unit 310 has a structure that emits light in a direction parallel to the lamp shaft 190 (see FIG. 2) and opposite to the support column 151 and in a direction intersecting with the lamp shaft 190.
  • the package 310a of the light emitting unit 310 is formed of, for example, a highly light-transmitting resin, so that the light emitting unit 310 has an upper and side (see FIG. 5A) Light can be emitted in a direction parallel to the XY plane.
  • a light emitting unit 310 is accommodated in the accommodating unit 211, for example, a light emitting state close to an incandescent light bulb using a filament coil and having a high luminance can be created.
  • the three light emitting units 310 are accommodated in the accommodating unit 211.
  • the number of the light emitting units 310 accommodated in the accommodating unit 211 is not limited. Only one storage unit 211 may be stored.
  • the light emitting unit 310 does not need to emit light in all directions parallel to the XY plane, and may not emit light in the Y-axis direction, for example.
  • FIG. 6 is a diagram illustrating configurations of the light guide body 220 and the light emitting unit 320 according to the third modification of the embodiment.
  • the light emitting unit 320 shown in FIG. 6 emits light in a direction intersecting the lamp axis 190 (see FIG. 2) direction, and the light guide 220 is on the side of the light emitting unit 320 at the end of the column 151.
  • the light emitting unit 320 is disposed in the light emission direction.
  • the light guide 220 transmits light incident from one end in the longitudinal direction of the light guide 220 and emits it to the outside of the light guide 220.
  • the amount of light reaching the light extraction unit 201 disposed at a position far from the light emitting unit 320 can be increased, and as a result, a plurality of light extraction units 201 arranged in the longitudinal direction in the light guide 220. Each brightness can be improved.
  • two sets of the light emitting unit 320 and the light guide 220 are arranged around the support column 151. However, at least one set of the light emitting unit 320 and the light guide 220 is sufficient. .
  • FIG. 7 is a diagram illustrating configurations of the light guide 230 and the light emitting unit 320 according to the fourth modification of the embodiment.
  • the light guide 230 is disposed so as to be sandwiched between the light emitting units 320 supported by the support column 151a and the support column 151b.
  • the light guide 230 transmits light incident from both ends in the longitudinal direction of the light guide 230 and emits the light to the outside of the light guide 230. Thereby, for example, even when the length of the light guide 230 in the longitudinal direction is relatively large, the luminance of each of the plurality of light extraction units 201 arranged in the longitudinal direction can be improved.
  • FIG. 8 is a diagram illustrating a configuration of the light guide 230 and the light emitting units 320 and 300 according to the fifth modification of the embodiment.
  • the light guide 230 shown in FIG. 8 has light emitting portions 320 disposed at both ends in the longitudinal direction, and further, light emitted from the lower side (Z-axis negative direction, hereinafter the same) and supported by the support column 151c. Part 300 is arranged.
  • the light guide 230 transmits light incident from both ends in the longitudinal direction of the light guide 230 and from below and emits the light to the outside.
  • the luminance of the plurality of light extraction portions 201 arranged in the longitudinal direction of the light guide 230 can be improved, and the luminous flux emitted from the entire light guide 230 can be improved.
  • a plurality of struts are used as a member on which a plurality of light emitting units are arranged.
  • a plurality of light emitting elements are provided on a horizontally long bar provided at the upper end of one strut. A part may be arranged.
  • FIG. 9 is a perspective view illustrating the configuration of the light guide 240 and the light emitting unit 320 according to Modification 6 of the embodiment.
  • the light guide 240 shown in FIG. 9 is common to the light guide 220 shown in FIG. 6 in that the light guide 240 is located on the side of the light emitting unit 320 and in the light emitting direction of the light emitting unit 320. .
  • the light guide 320 is common to the light guide 230 shown in FIGS. 7 and 8 in that the light emitting portions 320 are arranged at both ends of the light guide 240.
  • the two light emitting units 320 shown in FIG. 9 are not in a positional relationship in which the light emission directions are opposite to each other, and the light emission directions of the two light emitting units 320 are the same (including substantially the same).
  • the light guide 240 is U-shaped as a whole in a top view (the same applies when viewed from the positive direction of the Z axis) so as to match the arrangement of the light emitting units 320.
  • the light guide 230 shown in FIG. 9 has a bent portion in the XY plane so as to connect the two light emitting units 320.
  • the light guide 230 shown in FIG. 9 can artificially create a winding in a filament coil that is connected in a bent state between two lead wires, for example. .
  • FIG. 10 is a perspective view showing an external appearance of a light bulb shaped lamp 101 according to Modification 7 of the embodiment.
  • FIG. 11 is a diagram illustrating a configuration of the light emitting unit 350 and the light guide body 250 according to Modification Example 7 of the embodiment.
  • the light bulb shaped lamp 101 shown in FIG. 10 does not include the support column 151, and the light emitting unit 350 is disposed on the pedestal 150.
  • the light emitting unit 350 has one or more semiconductor light emitting elements 112 in a package whose upper surface is open, like the light emitting unit 300 shown in FIG.
  • the light guide 250 is connected to the opening. That is, light from the plurality of semiconductor light emitting elements 112 passes through the light guide 250 and is emitted to the outside.
  • the light guide 250 is provided so as to extend from the light emitting unit 350 into the globe 140.
  • the plurality of light extraction portions 201 are disposed in the central region of the globe 140 by being provided at the end portion (tip portion) opposite to the base 150 of the light guide 250.
  • the plurality of light extraction portions 201 are arranged side by side in a direction intersecting the lamp shaft 190 in the light guide body 250.
  • the light bulb shaped lamp 101 shown in FIG. 10 has such a configuration, so that a large amount of light can be emitted from the distal end portion of the light guide 250, and a plurality of light extraction portions arranged at the distal end portion. 201 can be particularly shining.
  • the light bulb shaped lamp 101 shown in FIG. 10 can artificially create a whirl peculiar to light emission by the filament coil, like the light bulb shaped lamp 100 shown in FIG. That is, the light bulb shaped lamp 101 is a light bulb shaped lamp 101 having light emission characteristics close to an incandescent light bulb using a filament coil.
  • the positions of the plurality of semiconductor light emitting elements 112 included in the light emitting unit 350 in the XY plane and the plurality of light extraction units 201 provided in the light guide body 250 are used.
  • the position on the XY plane coincides.
  • the light extraction unit 201 is disposed on the optical axis of each semiconductor light emitting element 112. Thereby, the brightness
  • the light guide used in the light bulb shaped lamp 101 in which the light source (light emitting unit 350) is arranged on the pedestal 150 as described above may be other than the light guide 250 shown in FIGS. Therefore, examples of the light guide used in the light bulb shaped lamp 101 will be described as Modification 8 and Modification 9.
  • FIG. 12 is a diagram illustrating configurations of the light emitting unit 350 and the light guide 260 according to Modification 8 of the embodiment.
  • the light emitting unit 350 shown in FIG. 12 is supported by the pedestal 150, not the support column 151, like the light emitting unit 350 shown in FIG.
  • the light guide 260 includes a vertical axis 260a extending from the pedestal 150 into the globe 140, and a horizontal axis 260b connected to the end of the vertical axis 260a opposite to the pedestal 150. And it has the elongate horizontal-axis part 260b in the direction which cross
  • the horizontal axis portion 260 b is provided in the light guide 260 so as to be orthogonal to the vertical axis portion 260 a parallel to the lamp axis 190.
  • the plurality of light extraction portions 201 are arranged on the horizontal axis portion 260b along the longitudinal direction of the horizontal axis portion 260b.
  • the T-shaped light guide 260 above the light emitting unit 350 arranged on the pedestal 150, for example, the light emission state of a relatively horizontally long filament coil can be reproduced.
  • the inclined portion 202 (see FIG. 4) for changing the traveling direction of the light incident from the light emitting unit 350 and emitting it to the outside may be provided in the central portion in the longitudinal direction of the horizontal axis portion 260b. Good.
  • At least a part of the peripheral surface of the vertical axis part 260a may be covered with a material (metal film or the like) that reflects light emitted from at least a part of the vertical axis part 260a inward.
  • a material metal film or the like
  • the light incident from the lower surface of the vertical axis portion 260a can efficiently reach the horizontal axis portion 260b. That is, the luminance of the entire horizontal axis portion 260b can be improved, and the luminance of each of the plurality of light extraction units 201 provided in the horizontal axis portion 260b can be further improved.
  • FIG. 13 is a perspective view illustrating configurations of the light emitting unit 350 and the light guide 270 according to the ninth modification of the embodiment.
  • the light guide 270 is provided so as to extend into the globe 140 from each of the two light emitting units 350, and as a whole when viewed from above.
  • the light guide 270 has a portion having the same shape as the light guide 240 according to the modified example 6 shown in FIG.
  • the light guide 270 shown in FIG. 13 can artificially create a winding in the filament coil that connects the two lead wires in a bent state, for example. .
  • the light extraction unit 201 has a hemispherical concave shape, but the shape of the light extraction unit 201 is not limited thereto.
  • the sub extraction portion 203 which is a finer concave portion may be provided on the concave inner surface.
  • the light extraction part 201a can improve the light extraction efficiency as compared with the light extraction part 201 that does not have the sub extraction part 203 by having such a structure.
  • the light extraction part 201a is employable as a light extraction part of light guides other than the light guide 200, such as the light guide 210. FIG.
  • a member having a light extraction portion 205 that is a hemispherical convex portion, such as the light guide 280 shown in FIG. 15A, is adopted in the light bulb shaped lamps 100 and 101 as a light guide. Also good.
  • the light guide 280 in which the plurality of light extraction units 205 are arranged functions as a member for artificially creating a whirl peculiar to light emission by a filament coil, for example, similar to the light guide 200 described above.
  • the shape of the light extraction unit 205 is not limited to a hemispherical shape, and may be, for example, a conical shape, a cylindrical shape, or a pyramid shape.
  • the light guide 280 shown to (a) of FIG. 15 is the shape which substituted the some light extraction part 201 of the light guide 200 (for example, refer FIG. 2) which concerns on embodiment with the light extraction part 205.
  • FIG. 2 the light extraction part 205 which is a hemispherical convex part can be employed as a light extraction part of a light guide other than the light guide 200 such as the light guide 210.
  • a plurality of light extraction parts having different shapes from each other such as mixing the light extraction part 201 and the light extraction part 205, may be provided in one light guide.
  • FIG. 9 and FIG. 13 the light guides 240 and 270 having a U-shaped portion as a whole in the top view have been described. However, the “U-shaped portion as a whole” is illustrated in FIGS. 9 and 13. A portion other than the shape shown in FIG.
  • it may have a shape having two portions bent at right angles like a light guide 290 shown in FIG. 16A, and like a light guide 291 shown in FIG. It may have a curved shape as a whole without having a bent portion.
  • a generally V-shaped portion may be included in the “U-shaped portion as a whole”.
  • examples of shapes that can be adopted by the light guide include various shapes such as a zigzag shape.
  • the cross-sectional shape of the light guide is not limited to a rectangle, and may be a polygon other than a rectangle such as a triangle, and at least a part of the outer shape of the cross-section may be configured by a curve.
  • each of the light extraction portions 201, 201a, and 205 there is no particular limitation on the method of forming each of the light extraction portions 201, 201a, and 205.
  • the light extraction unit 201 may be formed on the surface of the base body by pressing a heated sphere against a rectangular parallelepiped resin that is the base of the light guide body 200.
  • the light guide body 200 having a plurality of light extraction portions 201 on the surface may be manufactured by injection molding.
  • the present invention can be realized not only as the light bulb shaped lamp 100 but also as an illumination device including the light bulb shaped lamp 100, for example.
  • FIG. 17 is a schematic cross-sectional view of the lighting device 2 including the light bulb shaped lamp 100 according to the embodiment.
  • the lighting device 2 shown in FIG. 17 is a device that is used by being mounted on an indoor ceiling, for example.
  • the illuminating device 2 includes a light bulb shaped lamp 100 according to the embodiment and a lighting fixture 3.
  • the lighting fixture 3 is a fixture that turns off and turns on the light bulb shaped lamp 100 attached to the lighting fixture 3.
  • the lighting fixture 3 includes a fixture main body 4 attached to the ceiling and a translucent lamp cover 5 that covers the light bulb shaped lamp 100.
  • the appliance body 4 has a socket 4a.
  • a base 180 of the light bulb shaped lamp 100 is screwed into the socket 4a. Electric power is supplied to the light bulb shaped lamp 100 through the socket 4a.
  • the light bulb shaped lamp 101 according to the modified example 7 of the embodiment may be provided in the lighting device 2.
  • the various light emitting units such as the light emitting unit 300 are SMD type LED modules.
  • the present invention is not limited to this.
  • a COB (Chip On Board) type LED module in which a bare chip is directly mounted on the substrate 105 may be employed as the light emitting unit 300.
  • various light emitting units such as the light emitting unit 300 emit white light by the semiconductor light emitting element 112 that is a blue LED chip and the yellow phosphor (phosphor-containing resin 111).
  • the present invention is not limited to this.
  • a phosphor-containing resin containing a red phosphor and a green phosphor may be used and combined with a blue LED chip to emit white light.
  • the semiconductor light emitting element 112 an LED chip that emits a color other than blue may be adopted.
  • the phosphor particles may be a combination of phosphor particles that emit light of three primary colors (red, green, and blue).
  • a wavelength conversion material other than the phosphor particles may be used.
  • the wavelength conversion material absorbs light of a certain wavelength such as a semiconductor, a metal complex, an organic dye, or a pigment, and has a wavelength different from the absorbed light.
  • a material containing a substance that emits light may be used.
  • various light emitting units such as the light emitting unit 300 may not have the phosphor-containing resin 111. That is, the light from the semiconductor light emitting device 112 that has not undergone wavelength conversion may be emitted from the light emitting unit.
  • the LED chip is exemplified as the semiconductor light emitting device 112.
  • a semiconductor light emitting device such as a semiconductor laser, a light emitting device such as an organic EL (Electro Luminescence), or an inorganic EL is used as the semiconductor light emitting device. 112 may be employed.
  • the size of the globe 140 is assumed to be larger than the size of the housing 160.
  • the above-described configurations of the light emitting unit 300 and the light guide 200 can be applied to a light bulb shaped lamp in which the size of the globe 140 is smaller than the size of the housing 160.
  • the present invention is useful as a light bulb shaped lamp that replaces a conventional incandescent light bulb or the like.

Abstract

La présente invention concerne une lampe de type à ampoule (100) comprenant : une ampoule (140); une partie émettrice de lumière (300) montée sur un substrat (105) et qui présente un ou plusieurs éléments semi-conducteurs (112) émettant de la lumière disposés à l'intérieur de l'ampoule (140); et un élément de guidage de la lumière (200) qui est disposé à l'intérieur de l'ampoule (140), qui est formé en tant qu'unité séparée du substrat (105), qui transmet la lumière émise par l'unité émettrice de lumière (300) et qui émet la lumière depuis la surface. L'élément de guidage de la lumière (200) a de multiples parties d'extraction de la lumière (201) qui sont disposées sous forme discrète sur la surface et qui fonctionnent en tant que sections de forme concave ou convexe sur la surface.
PCT/JP2013/003897 2012-08-30 2013-06-21 Lampe de type à ampoule WO2014033997A1 (fr)

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JP2012190623 2012-08-30
JP2012-190623 2012-08-30

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Publication number Priority date Publication date Assignee Title
GB2539190A (en) * 2015-06-05 2016-12-14 Graphene Lighting Plc LED light bulb simultaneously using as nightlight

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WO2007047437A2 (fr) * 2005-10-18 2007-04-26 Goldeneye, Inc. Systemes d'eclairage a emission laterale comprenant des diodes electroluminescentes
JP2011175954A (ja) * 2010-07-12 2011-09-08 Skg:Kk 照明装置
JP2012513083A (ja) * 2008-12-18 2012-06-07 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 照明器具において装飾的照明効果を生成する発光装置
JP2012155895A (ja) * 2011-01-24 2012-08-16 Suntec Inc Ｌｅｄ電球

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007047437A2 (fr) * 2005-10-18 2007-04-26 Goldeneye, Inc. Systemes d'eclairage a emission laterale comprenant des diodes electroluminescentes
JP2012513083A (ja) * 2008-12-18 2012-06-07 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 照明器具において装飾的照明効果を生成する発光装置
JP2011175954A (ja) * 2010-07-12 2011-09-08 Skg:Kk 照明装置
JP2012155895A (ja) * 2011-01-24 2012-08-16 Suntec Inc Ｌｅｄ電球

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2539190A (en) * 2015-06-05 2016-12-14 Graphene Lighting Plc LED light bulb simultaneously using as nightlight
GB2539190B (en) * 2015-06-05 2021-02-03 Graphene Lighting Plc An LED light bulb

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