WO2014033997A1 - Bulb-type lamp - Google Patents

Bulb-type lamp Download PDF

Info

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
Authority
WO
WIPO (PCT)
Prior art keywords
light
light emitting
light guide
emitting unit
globe
Prior art date
Application number
PCT/JP2013/003897
Other languages
French (fr)
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/en

Links

Images

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

A bulb-type lamp (100) provided with: a globe (140); a light-emitting part (300) which is mounted on a substrate (105) and which has one or more semiconductor light-emitting elements (112) disposed inside the globe (140); and a light-guiding element (200) which is disposed inside the globe (140), is formed as a separate entity from the substrate (105), transmits the light emitted from the light emission unit (300), and emits the light from the surface. The light-guiding element (200) has multiple light extraction parts (201) which are discretely disposed on the surface and which function as concave-shaped or convex-shaped sections on the surface.

Description

電球形ランプLight bulb shaped lamp
　本発明は、電球形ランプに関し、特に、発光ダイオード（ＬＥＤ：Ｌｉｇｈｔ　Ｅｍｉｔｔｉｎｇ　Ｄｉｏｄｅ）等の半導体発光素子を備える電球形ランプに関する。 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).
　近年、ＬＥＤ等の半導体発光素子は、小型、高効率および長寿命であることから、各種ランプの新しい光源として期待されており、ＬＥＤを光源とするＬＥＤランプの研究開発が進められている。 In recent years, 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.
　このようなＬＥＤランプとしては、フィラメントコイルを用いた白熱電球に似た形状の電球形のＬＥＤランプ（電球形ＬＥＤランプ）がある。例えば、特許文献１には、従来の電球形ＬＥＤランプが開示されている。 As such an LED lamp, there is a light bulb shaped LED lamp (bulb shaped LED lamp) having a shape similar to an incandescent light bulb using a filament coil. For example, Patent Document 1 discloses a conventional bulb-type LED lamp.
　この特許文献１に開示された従来の電球形ＬＥＤランプでは、グローブと、グローブ内に配置された基板と、基板上に実装されたＬＥＤとを備えている。 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.
特開２００６－３１３７１７号公報JP 2006-313717 A
　ここで、上記従来の電球形ＬＥＤランプでは、点状光源をなすチップ状の発光素子としてＬＥＤが用いられている。そのため、例えば、透明度の高いグローブを採用した場合、発光素子からの光が、直接的に光の粒として視覚される。 Here, in the above-described conventional bulb-type LED lamp, 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.
　つまり、上記従来の電球形ＬＥＤランプでは、フィラメントコイルを用いた白熱電球の発光状態を再現することは困難である。 That is, it is difficult to reproduce the light emission state of an incandescent light bulb using a filament coil with the above-described conventional light bulb shaped LED lamp.
　本発明は、上記従来の課題を考慮し、半導体発光素子を光源として備え、かつ、フィラメントコイルを用いた白熱電球に近い発光特性を有する電球形ランプを提供することを目的とする。 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.
　上記課題を解決するために、本発明の一態様に係る電球形ランプは、グローブと、基板に実装された発光部であって、前記グローブの内方に配置され、１以上の半導体発光素子を有する発光部と、前記グローブの内方に配置され、前記発光部から入射された光を透過させて表面から放出する、前記基板とは別体である導光体とを備え、前記導光体は、前記表面に離散的に配置された複数の光取出部であって、それぞれが、前記表面に設けられた凹形状または凸形状の部分である複数の光取出部を有する。 In order to solve the above problems, a light bulb shaped lamp according to an aspect of the present invention 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.
　また、本発明の一態様に係る電球形ランプにおいて、例えば、前記複数の光取出部のそれぞれは、半球状の凹形状または凸形状の部分であるとしてもよい。 In the light bulb shaped lamp according to an aspect of the present invention, for example, each of the plurality of light extraction portions may be a hemispherical concave shape or a convex shape portion.
　また、本発明の一態様に係る電球形ランプにおいて、例えば、前記複数の光取出部は、前記導光体において、ランプ軸と交差する方向に並んで配置されているとしてもよい。 In the light bulb shaped lamp according to one aspect of the present invention, for example, the plurality of light extraction portions may be arranged side by side in a direction intersecting the lamp axis in the light guide.
　また、本発明の一態様に係る電球形ランプは、例えば、さらに、前記グローブの開口部に配置された台座に立設され、前記台座から前記グローブ内に向かって延びるように設けられた支柱を備え、前記発光部および前記導光体は、前記支柱の、前記台座とは反対側の端部に支持されていることで、前記グローブの中心領域に配置されているとしてもよい。 In addition, 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.
　また、本発明の一態様に係る電球形ランプにおいて、例えば、前記発光部は、ランプ軸に平行かつ前記支柱とは反対側の方向、および、前記ランプ軸と交差する方向に光を放射し、前記導光体は、前記支柱側の面に、前記発光部を収容する陥凹状の収容部を有するとしてもよい。 Further, in the light bulb shaped lamp according to one aspect of the present invention, for example, 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.
　また、本発明の一態様に係る電球形ランプにおいて、例えば、前記発光部は、ランプ軸と交差する方向に光を放射し、前記導光体は、前記支柱の前記端部における前記発光部の側方であって、前記発光部の光の放射方向に配置されているとしてもよい。 Further, in the light bulb shaped lamp according to one aspect of the present invention, for example, 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 | positioning in the radiation | emission direction of the light of the said light emission part.
　また、本発明の一態様に係る電球形ランプは、例えば、さらに、前記グローブの開口部に配置された台座を備え、前記発光部は、前記台座に配置されており、前記導光体は、前記発光部から前記グローブ内に向かって延びるように設けられており、前記複数の光取出部は、前記導光体の前記台座とは反対側の端部に設けられていることで、前記グローブの中心領域に配置されているとしてもよい。 In addition, 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.
　また、本発明の一態様に係る電球形ランプにおいて、例えば、前記導光体は、前記台座から前記グローブ内に向かって延設された縦軸部と、前記縦軸部の前記台座とは反対側の端部に接続された横軸部であって、前記縦軸部と交差する方向に長尺状の横軸部とを有し、前記複数の光取出部は、前記横軸部に、前記横軸部の長手方向に並んで配置されているとしてもよい。 In the light bulb shaped lamp according to one aspect of the present invention, for example, 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 | positioning along with the longitudinal direction of the said horizontal-axis part.
　また、本発明の一態様に係る電球形ランプにおいて、例えば、前記導光体は、前記発光部から入射された光の進行方向を変更して外部に放出するための傾斜面部を有するとしてもよい。 In the light bulb shaped lamp according to an aspect of the present invention, for example, 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. .
　本発明によれば、半導体発光素子を光源として備え、かつ、フィラメントコイルを用いた白熱電球に近い発光特性を有する電球形ランプを提供することができる。これにより、例えば、白熱電球による照明に似た照明効果を、白熱電球よりも低い消費電力で提供することができる。 According to the present invention, it is possible to provide 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. Thereby, for example, an illumination effect similar to that of incandescent light bulbs can be provided with lower power consumption than incandescent light bulbs.
図１は、実施の形態に係る電球形ランプの斜視図である。FIG. 1 is a perspective view of a light bulb shaped lamp according to an embodiment. 図２は、実施の形態に係る電球形ランプの断面図である。FIG. 2 is a cross-sectional view of the light bulb shaped lamp according to the embodiment. 図３は、実施の形態に係る光取出部の形状を示す断面図である。FIG. 3 is a cross-sectional view showing the shape of the light extraction portion according to the embodiment. 図４は、実施の形態の変形例１に係る導光体および発光部の構成を示す図である。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. 図５は、実施の形態の変形例２に係る導光体および発光部の構成を示す図である。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. 図６は、実施の形態の変形例３に係る導光体および発光部の構成を示す図である。FIG. 6 is a diagram illustrating a configuration of a light guide and a light emitting unit according to Modification 3 of the embodiment. 図７は、実施の形態の変形例４に係る導光体および発光部の構成を示す図である。FIG. 7 is a diagram illustrating a configuration of a light guide and a light emitting unit according to Modification 4 of the embodiment. 図８は、実施の形態の変形例５に係る導光体および発光部の構成を示す図である。FIG. 8 is a diagram illustrating a configuration of a light guide and a light emitting unit according to Modification 5 of the embodiment. 図９は、実施の形態の変形例６に係る導光体および発光部の構成を示す斜視図である。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. 図１０は、実施の形態の変形例７に係る電球形ランプの外観を示す斜視図である。FIG. 10 is a perspective view showing an external appearance of a light bulb shaped lamp according to Modification 7 of the embodiment. 図１１は、実施の形態の変形例７に係る導光体および発光部の構成を示す図である。FIG. 11 is a diagram illustrating a configuration of a light guide and a light emitting unit according to Modification 7 of the embodiment. 図１２は、実施の形態の変形例８に係る導光体および発光部の構成を示す図である。FIG. 12 is a diagram illustrating a configuration of a light guide and a light emitting unit according to Modification 8 of the embodiment. 図１３は、実施の形態の変形例９に係る導光体および発光部の構成を示す斜視図である。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. 図１４は、副取出部を有する光取出部の形状の一例を示す図である。FIG. 14 is a diagram illustrating an example of the shape of the light extraction unit having the sub extraction unit. 図１５は、半球状の凸形状の部分である光取出部の形状の一例を示す図である。FIG. 15 is a diagram illustrating an example of the shape of the light extraction portion which is a hemispherical convex portion. 図１６は、全体としてＵ字状の部分を有する導光体の形状例を示す図である。FIG. 16 is a diagram illustrating a shape example of a light guide body having a U-shaped portion as a whole. 図１７は、実施の形態に係る電球形ランプを備える照明装置の概略断面図である。FIG. 17: is a schematic sectional drawing of an illuminating device provided with the lightbulb-shaped lamp which concerns on embodiment.
　以下、本発明の実施の形態に係る電球形ランプについて、図面を参照しながら説明する。なお、各図は、模式図であり、必ずしも厳密に図示したものではない。 Hereinafter, a light bulb shaped lamp according to an embodiment of the present invention will be described with reference to the drawings. Each figure is a schematic diagram and is not necessarily illustrated exactly.
　また、以下で説明する実施の形態は、本発明の一具体例を示すものである。以下の実施の形態で示される数値、形状、材料、構成要素、構成要素の配置位置および接続形態などは一例であり、本発明を限定する主旨ではない。また、以下の実施の形態における構成要素のうち、最上位概念を示す独立請求項に記載されていない構成要素については、任意の構成要素として説明される。 The embodiment described below shows a specific example of the present invention. The numerical values, shapes, materials, constituent elements, arrangement positions and connecting forms of the constituent elements shown in the following embodiments are merely examples, and are not intended to limit the present invention. In addition, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept are described as optional constituent elements.
　まず、実施の形態に係る電球形ランプ１００の構成概要について、図１および図２を用いて説明する。 First, an outline of the configuration of the light bulb shaped lamp 100 according to the embodiment will be described with reference to FIGS. 1 and 2.
　図１は、実施の形態に係る電球形ランプ１００の斜視図である。また、図２は、実施の形態に係る電球形ランプ１００の断面図である。なお、図２において、駆動回路１２０については断面図ではなく側面図である。 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. In FIG. 2, the drive circuit 120 is not a sectional view but a side view.
　図１および図２に示すように、本実施の形態に係る電球形ランプ１００は、例えば、電球形蛍光灯または白熱電球の代替品となる電球形ＬＥＤランプである。 As shown in FIGS. 1 and 2, the light bulb shaped lamp 100 according to the present embodiment 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.
　電球形ランプ１００は、グローブ１４０と、基板１０５に実装された発光部３００であって、グローブ１４０の内方に配置され、１以上の半導体発光素子１１２を有する発光部３００と、導光体２００とを備える。 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.
　導光体２００は、基板１０５とは別体であり、グローブ１４０の内方に配置され、発光部３００から入射された光を透過させて表面から放出する。導光体２００は、表面に離散的に配置された複数の光取出部２０１であって、それぞれが、表面に設けられた凹形状または凸形状の部分である複数の光取出部２０１を有する。 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.
　本実施の形態に係る電球形ランプ１００は、さらに、発光部３００に所定の電力を供給するための駆動回路１２０と、駆動回路１２０を内部に収容する筐体１６０と、外部から電力を受ける口金１８０とを備える。なお、本実施の形態に係る電球形ランプ１００は、グローブ１４０と筐体１６０と口金１８０とによって外囲器が構成されている。 The light bulb shaped lamp 100 according to the present embodiment 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. In the light bulb shaped lamp 100 according to the present embodiment, an envelope is constituted by the globe 140, the housing 160, and the base 180.
　以下、電球形ランプ１００の各構成部材について、図１および図２を参照しながら説明する。 Hereinafter, each component of the light bulb shaped lamp 100 will be described with reference to FIGS. 1 and 2.
　［筐体］
　筐体１６０は、駆動回路１２０を内部に収容する構造物であり、本実施の形態では、樹脂製の単一の構造物として電球形ランプ１００に備えられている。なお、筐体１６０は、例えば、駆動回路１２０を収容する回路ケースと、回路ケースを覆うカバーなどの複数の部材によって構成されていてもよい。 [Case]
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. Note that 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.
　［グローブ］
　グローブ１４０は、例えば、可視光に対して透明なシリカガラス製の中空部材である。なお、グローブ１４０は、透明である必要はなく、素材もシリカガラスでなくてもよい。グローブ１４０は、内部に配置された導光体２００からの光を透過させる光透過性を有する中空の部材であればよい。 [Glove]
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.
　［発光部］
　発光部３００は、１以上の半導体発光素子１１２を有する発光装置である。 [Light emitting part]
The light emitting unit 300 is a light emitting device having one or more semiconductor light emitting elements 112.
　本実施の形態では、発光部３００は、表面実装（ＳＭＤ：Ｓｕｒｆａｃｅ　Ｍｏｕｎｔ　Ｄｅｖｉｃｅ）型のＬＥＤモジュールである。 In the present embodiment, the light emitting unit 300 is a surface mount (SMD) type LED module.
　具体的には、発光部３００は、樹脂成形されたパッケージ３００ａと、パッケージ３００ａに形成されたキャビティ内に実装された複数の半導体発光素子１１２と、これら半導体発光素子１１２を封止する蛍光体含有樹脂１１１とを有する。 Specifically, 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.
　この半導体発光素子１１２としては、例えば青色光を発光する青色発光ＬＥＤチップ（以下、「青色ＬＥＤチップ」という。）が採用される。例えばＩｎＧａＮ系の材料によって構成された、中心波長が４４０ｎｍ～４７０ｎｍの窒化ガリウム系の青色ＬＥＤチップが、半導体発光素子１１２として採用される。 As the semiconductor light emitting element 112, for example, a blue light emitting LED chip that emits blue light (hereinafter referred to as “blue LED chip”) is employed. For example, 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.
　また、半導体発光素子１１２を封止する蛍光体含有樹脂１１１としては、半導体発光素子１１２から白色光を得るために、ＹＡＧ（イットリウム・アルミニウム・ガーネット）系の黄色蛍光体粒子をシリコーン樹脂に分散させた材料が採用される。 Further, as the phosphor-containing resin 111 for sealing the semiconductor light emitting device 112, in order to obtain white light from the semiconductor light emitting device 112, YAG (yttrium, aluminum, garnet) -based yellow phosphor particles are dispersed in a silicone resin. Materials are used.
　黄色蛍光体粒子は、半導体発光素子１１２である青色ＬＥＤチップの青色光によって励起されて黄色光を放出する。そのため、発光部３００からは、励起された黄色光と半導体発光素子１１２の青色光との混色により生成される白色光が放出される。 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.
　発光部３００におけるパッケージ３００ａは、上面が開口しており、当該開口には導光体２００が接続されている。つまり、複数の半導体発光素子１１２からの光は、導光体２００を透過して外部に放出される。 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.
　また、発光部３００は、発光部３００が実装された基板１０５が、支柱１５１の端部に接着剤またはビス等で取り付けられることで、電球形ランプ１００に備えられている。 In addition, 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.
　基板１０５としては、例えば、平面視において矩形の板状基板であって、アルミナ等からなるセラミックス基板が採用される。 As 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.
　なお、基板１０５の素材はアルミナに限定されない。例えば、窒化アルミニウムからなる透光性セラミックス基板、透明なガラス基板、水晶からなる基板、サファイア基板、または樹脂製の基板などが基板１０５として採用され得る。 Note that the material of the substrate 105 is not limited to alumina. For example, 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.
　また、リジッド基板ではなく、フレキシブル基板、またはリジッドフレキシブル基板を基板１０５として採用することもできる。 Further, instead of the rigid substrate, a flexible substrate or a rigid flexible substrate can be adopted as the substrate 105.
　支柱１５１は、グローブ１４０の開口部１４１に配置された台座１５０に立設され、台座１５０からグローブ１４０内に向かって延びるように設けられている。 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.
　つまり、本実施の形態に係る発光部３００および導光体２００は、支柱１５１の、台座１５０とは反対側の端部に支持されていることで、グローブ１４０の中心領域に配置されている。 That is, 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.
　なお、グローブ１４０の中心領域とは、例えば、グローブ１４０の球状部分の中心から、当該球状部分の半径の５割～８割程度の距離内の空間領域である。グローブ１４０の中心領域は、例えば、フィラメントコイルを用いた白熱電球において、一般に、フィラメントコイルが配置されている領域に相当する。 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. For example, in an incandescent lamp using a filament coil, the central region of the globe 140 generally corresponds to a region where the filament coil is disposed.
　また、支柱１５１および台座１５０は、金属材料（例えば、アルミニウム合金）または熱伝導率の高い樹脂材料によって構成されているため、発光部３００で発生する熱を放熱させるための放熱部材としても機能する。これにより、例えば、温度上昇による半導体発光素子１１２の発光効率の低下および寿命の低下が抑制される。 Moreover, since the support | 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 | occur | produces in the light emission part 300. 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.
　また、発光部３００には、駆動回路１２０の電力出力部から導出される一対のリード線１３０ａおよび１３０ｂと電気的に接続された一対の電極（不図示）が設けられている。この一対の電極に、駆動回路１２０からの直流電力が供給されることによって、発光部３００が有する複数の半導体発光素子１１２が発光する。 In addition, 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. By supplying DC power from the drive circuit 120 to the pair of electrodes, the plurality of semiconductor light emitting elements 112 included in the light emitting unit 300 emit light.
　なお、リード線１３０ａおよび１３０ｂは、本実施の形態では、支柱１５１の外面に沿うように設置されているが、例えば、支柱１５１の内部を貫通して発光部３００と接続されてもよい。 In this embodiment, the lead wires 130a and 130b are installed along the outer surface of the support column 151. However, 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.
　［駆動回路］
　駆動回路（回路ユニット）１２０は、発光部３００の半導体発光素子１１２を点灯（発光）させるための点灯回路であって、発光部３００に所定の電力を供給する。 [Drive circuit]
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.
　例えば、駆動回路１２０は、一対のリード線１３０ｃおよび１３０ｄを介して口金１８０から供給される交流電力を直流電力に変換し、一対のリード線１３０ａおよび１３０ｂを介して当該直流電力を発光部３００に供給する。 For example, 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.
　駆動回路１２０は、回路基板１２１と、回路基板１２１に接続された複数の回路素子（電子部品）１２２とによって構成されている。 The drive circuit 120 includes a circuit board 121 and a plurality of circuit elements (electronic components) 122 connected to the circuit board 121.
　回路基板１２１は、金属配線がパターン形成されたプリント基板であり、当該回路基板１２１に実装された複数の回路素子１２２同士を電気的に接続するとともに、複数の回路素子１２２とリード線１３０ａ～１３０ｄとを電気的に接続する。 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.
　複数の回路素子１２２は、例えば、セラミックコンデンサ（出力側平滑コンデンサ）１２２ａ、および１２２ｂ、電解コンデンサ１２２ｃ、チョークコイル１２２ｄ、ノイズフィルタ１２２ｅなどで構成される。 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.
　［口金］
　口金１８０は、駆動回路１２０に供給される電力を外部から受ける、筐体１６０の一端に備えられた部材である。 [Base]
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.
　具体的には、筒状の筐体１６０の、グローブ１４０の開口部１４１と接続された端部とは反対側の端部に、ネジ山を有する螺合部１６２が設けられており、螺合部１６２に口金１８０が螺合することで、口金１８０が筐体１６０に取り付けられている。 Specifically, 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.
　具体的には、口金１８０は、螺合部１６２に螺合した状態で径方向にかしめられ、これにより、口金１８０が筐体１６０に固定される。 Specifically, 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.
　［導光体］
　導光体２００は、発光部３００から入射された光を透過させて表面から放出する部材である。具体的には、導光体２００は、例えば、アクリル樹脂等の光透過性の高い樹脂で形成された、厚みが２～４ｍｍ程度の部材である。 [Light guide]
The light guide 200 is a member that transmits light incident from the light emitting unit 300 and emits it from the surface. Specifically, 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.
　また、導光体２００は、表面に離散的に配置された複数の光取出部２０１であって、それぞれが、当該表面に設けられた凹形状または凸形状の部分である複数の光取出部２０１を有する。なお、本実施の形態では、図１および図２に示すように、導光体２００の表面に形成された凹形状の部分が、光取出部２０１として機能する。 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. Have In the present embodiment, as shown in FIGS. 1 and 2, the concave portion formed on the surface of the light guide 200 functions as the light extraction portion 201.
　また、複数の光取出部２０１は、導光体２００において、ランプ軸１９０と交差する方向に並んで配置されている。より詳細には、複数の光取出部２０１は、ランプ軸１９０と直交（略直交を含む、以下同じ）する方向に並んで配置されている。 Further, 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).
　なお、ランプ軸１９０とは、電球形ランプ１００を照明装置のソケットに取り付ける際の回転中心となる軸である。本実施の形態では、ランプ軸１９０はＺ軸に平行であり、かつ、口金１８０の回転軸と一致している。 Note that 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. In the present embodiment, the lamp shaft 190 is parallel to the Z axis and coincides with the rotational axis of the base 180.
　図３は、実施の形態に係る光取出部２０１の形状の一例を示す断面図である。 FIG. 3 is a cross-sectional view showing an example of the shape of the light extraction unit 201 according to the embodiment.
　図３に示すように、光取出部２０１は凹形状である。より具体的には、光取出部２０１は、半球状の凹形状であり、その直径は１～２ｍｍ程度である。 As shown in FIG. 3, 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.
　光取出部２０１は、このような形状を有することで、導光体２００において、他の部分よりも光の取り出し効率が高い。つまり、光取出部２０１は他の部分よりも多くの光を外部に放出することができる。このことを、以下に簡単に説明する。 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.
　例えば、図３に示す、導光体２００の表面におけるＰ１の位置では、導光体２００の表面に垂直に入射する光Ｌａは、外部に放出される。しかし、当該表面に対して斜めから入射する光ＬｂおよびＬｃは、当該表面（つまり、導光体２００と、導光体２００の外部との境界面）で例えば全反射する。 For example, at the position P1 on the surface of the light guide 200 shown in FIG. 3, the light La incident perpendicularly to the surface of the light guide 200 is emitted to the outside. However, 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).
　一方、光取出部２０１に入射する、導光体２００の表面を基準とした場合の入射角が互いに異なる３つの光（Ｌｄ、Ｌｅ、Ｌｆ）のほとんどは、光取出部２０１を介して外部に放出される。 On the other hand, most of the three lights (Ld, Le, and Lf) that are incident on the light extraction unit 201 and have different incident angles when the surface of the light guide 200 is used as a reference are externally transmitted through the light extraction unit 201. Released.
　これにより、導光体２００における光取出部２０１からは、他の部分よりも多くの光が外部に放出される。つまり、導光体２００における光取出部２０１の輝度は、光取出部２０１以外の部分の輝度よりも高い。 Thereby, more light is emitted to the outside from the light extraction unit 201 in the light guide 200 than in other parts. That is, 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.
　その結果、導光体２００は、その全体が発光体として機能するとともに、離散的に配置された複数の光取出部２０１の部分を集中的に光らせることができる。 As a result, 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.
　すなわち、このような光取出部２０１がランプ軸１９０と交差する方向に複数並んで配置された導光体２００が、グローブ１４０の中心領域に配置されていることで、フィラメントコイルを用いた白熱電球に似た発光状態が再現される。 That is, 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.
　具体的には、導光体２００によって、例えば、フィラメントコイルによる発光に特有の煌きが擬似的に作り出される。 Specifically, the light guide 200 creates, for example, a sprinkle peculiar to light emission by the filament coil.
　このように、本実施の形態の電球形ランプ１００は、半導体発光素子１１２を光源として備え、かつ、フィラメントコイルを用いた白熱電球に近い発光特性を有する電球形ランプ１００である。 As described above, the light bulb shaped lamp 100 according to the present embodiment 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.
　なお、導光体２００および発光部３００の構成は、図１～図３に示す構成以外であってもよい。そこで、導光体２００および発光部３００についての各種の変形例を、図４～図１６を用いて説明する。 It should be noted that 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.
　（変形例１）
　図４は、実施の形態の変形例１に係る導光体２００および発光部３００の構成を示す図である。なお、図４を含め、以下に示す、斜視図以外の各図において、特に説明のない限り、各種の導光体については断面図を示しており、各種の発光部については側面図を示している。 (Modification 1)
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. In addition, in each figure other than the perspective view shown below including FIG. 4, unless otherwise specified, sectional views are shown for various light guides, and side views are shown for various light emitting parts. Yes.
　導光体２００は、例えば、図４に示すように、発光部３００から入射された光の進行方向を変更して外部に放出するための傾斜面部２０２を有してもよい。 For example, as shown in FIG. 4, 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.
　具体的には、図４に示す導光体２００は、発光部３００の直上に相当する位置に傾斜面部２０２を有している。これにより、発光部３００から導光体２００に入射され、上方（Ｚ軸正の方向、以下同じ）に直進する光の一部を、少なくとも、図４における左右方向（Ｘ軸に平行な方向、以下同じ）に進行させることができる。 Specifically, 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. Thereby, a part of the light incident on the light guide 200 from the light emitting unit 300 and traveling straight upward (Z-axis positive direction, the same applies hereinafter) is at least left and right in FIG. 4 (a direction parallel to the X-axis, The same shall apply hereinafter.
　その結果、例えば、Ｘ軸方向に長尺状の導光体２００において、発光部３００から遠い位置にある光取出部２０１における輝度を向上させることができる。 As a result, for example, in the light guide body 200 that is long in the X-axis direction, it is possible to improve the luminance in the light extraction unit 201 located far from the light emitting unit 300.
　（変形例２）
　図５は、実施の形態の変形例２に係る導光体２１０および発光部３１０の構成を示す図である。 (Modification 2)
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.
　図５に示す導光体２１０は、図５の（ａ）および（ｂ）に示すように、支柱１５１側の面に発光部３１０を収容する陥凹状の収容部２１１を有している。 As shown in FIGS. 5A and 5B, 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.
　また、発光部３１０は、ランプ軸１９０（図２参照）に平行かつ支柱１５１とは反対側の方向、および、ランプ軸１９０と交差する方向に光を放射する構造を有している。 Further, 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.
　具体的には、発光部３１０のパッケージ３１０ａが、例えば、光透過性の高い樹脂で形成されていることで、発光部３１０は、図５の（ａ）に示すように、上方および側方（ＸＹ平面に平行な方向）に光を放射することができる。 Specifically, 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.
　このような発光部３１０が、収容部２１１に収容されていることで、例えば、フィラメントコイルを用いた白熱電球に近い発光状態であって、かつ、輝度の高い発光状態を作り出すことができる。 Since such 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.
　なお、図５の（ａ）では、３つの発光部３１０が収容部２１１に収容されているが、収容部２１１に収容される発光部３１０の数に限定はなく、例えば、発光部３１０が１つのみ収容部２１１に収容されていてもよい。 In FIG. 5A, the three light emitting units 310 are accommodated in the accommodating unit 211. However, 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.
　また、発光部３１０は、ＸＹ平面に平行な全方向に光を放射する必要はなく、例えば、Ｙ軸方向に光を放射しなくてもよい。 Further, 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.
　（変形例３）
　図６は、実施の形態の変形例３に係る導光体２２０および発光部３２０の構成を示す図である。 (Modification 3)
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.
　図６に示す発光部３２０は、ランプ軸１９０（図２参照）方向と交差する方向に光を放射し、導光体２２０は、支柱１５１の端部における発光部３２０の側方であって、発光部３２０の光の放射方向に配置されている。 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.
　つまり、導光体２２０は、導光体２２０の長手方向の一端から入射される光を透過させて導光体２２０の外部に放出している。これにより、例えば、発光部３２０から遠い位置に配置された光取出部２０１に到達する光量を増加させることができ、その結果、導光体２２０において長手方向に並べられた複数の光取出部２０１それぞれの輝度を向上させることができる。 That is, 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. Thereby, for example, 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.
　なお、図６では、支柱１５１を中心として、発光部３２０と導光体２２０との組みが２つ配置されているが、発光部３２０と導光体２２０との組みは少なくとも一つあればよい。 In FIG. 6, 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. .
　（変形例４）
　図７は、実施の形態の変形例４に係る導光体２３０および発光部３２０の構成を示す図である。 (Modification 4)
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.
　図７に示す導光体２３０は、発光部３２０の側方であって、発光部３２０の光の放射方向に配置されている。具体的には、導光体２３０は、支柱１５１ａおよび支柱１５１ｂのそれぞれに支持された発光部３２０に挟まれるように配置されている。 7 is arranged on the side of the light emitting unit 320 and in the light emitting direction of the light emitting unit 320. Specifically, 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.
　つまり、導光体２３０は、導光体２３０の長手方向の両端から入射される光を透過させて導光体２３０の外部に放出している。これにより、例えば、導光体２３０の長手方向の長さを比較的大きくした場合であっても、長手方向に並べられた複数の光取出部２０１それぞれの輝度を向上させることができる。 That is, 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.
　（変形例５）
　図８は、実施の形態の変形例５に係る導光体２３０ならびに発光部３２０および３００の構成を示す図である。 (Modification 5)
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.
　図８に示す導光体２３０は、長手方向の両端に発光部３２０が配置されており、さらに、下方（Ｚ軸負の方向、以下同じ）から光を入射する、支柱１５１ｃに支持された発光部３００が配置されている。 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.
　つまり、導光体２３０は、導光体２３０の長手方向の両端および下方から入射される光を透過させて外部に放出している。これにより、例えば、導光体２３０の長手方向に並べられた複数の光取出部２０１の輝度を向上させ、かつ、導光体２３０全体から放出される光束を向上させることができる。 That is, 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. Thereby, for example, 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.
　なお、図７および図８では、複数の発光部が配置される部材として、複数の支柱が用いられているが、例えば、１本の支柱の上端に備えられた横長のバーに、複数の発光部が配置されてもよい。 7 and 8, a plurality of struts are used as a member on which a plurality of light emitting units are arranged. For example, 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.
　（変形例６）
　図９は、実施の形態の変形例６に係る導光体２４０および発光部３２０の構成を示す斜視図である。 (Modification 6)
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.
　図９に示す導光体２４０は、発光部３２０の側方であって、発光部３２０の光の放射方向に配置されているという点では、図６に示す導光体２２０と共通している。 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. .
　また、導光体２４０の両端に発光部３２０が配置されているという点では、図７および図８に示す導光体２３０と共通している。 Further, 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.
　しかし、図９に示す２つの発光部３２０は、それぞれの光の放射方向が互いに逆となる位置関係になく、２つの発光部３２０の光の放射方向は同一（略同一含む）である。 However, 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).
　また、これら発光部３２０の配置に合わせるように、導光体２４０は上面視（Ｚ軸正の方向から見た場合、以下同じ）において、全体としてＵ字状である。 In addition, 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.
　具体的には、図９に示す導光体２３０は、２つの発光部３２０の間を接続するように、ＸＹ平面内において屈曲した部分を有している。 Specifically, 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.
　図９に示す導光体２３０は、このような形状を採用することで、例えば、２本のリード線の間を撓んだ状態で接続するフィラメントコイルにおける煌きを擬似的に作り出すことができる。 By adopting such a shape, 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. .
　（変形例７）
　図１０は、実施の形態の変形例７に係る電球形ランプ１０１の外観を示す斜視図である。図１１は、実施の形態の変形例７に係る発光部３５０および導光体２５０の構成を示す図である。 (Modification 7)
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.
　図１０に示す電球形ランプ１０１は、支柱１５１を備えておらず、発光部３５０は、台座１５０に配置されている。なお、発光部３５０は、図１等に示す発光部３００と同じく、上面が開口したパッケージ内に１以上の半導体発光素子１１２を有している。また、当該開口に導光体２５０が接続されている。つまり、複数の半導体発光素子１１２からの光は、導光体２５０を通過して外部に放出される。 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. Note that 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.
　導光体２５０は、発光部３５０からグローブ１４０内に向かって延びるように設けられている。複数の光取出部２０１は、導光体２５０の、台座１５０とは反対側の端部（先端部）に設けられていることで、グローブ１４０の中心領域に配置されている。 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.
　また、図１１に示すように、複数の光取出部２０１は、導光体２５０において、ランプ軸１９０と交差する方向に並んで配置されている。 Further, as shown in FIG. 11, 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.
　図１０に示す電球形ランプ１０１は、このような構成を有することで、導光体２５０の先端部から多くの光を放出することができ、かつ、先端部に配置された複数の光取出部２０１を特に輝かせることができる。 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.
　つまり、図１０に示す電球形ランプ１０１は、図１等に示す電球形ランプ１００と同じく、フィラメントコイルによる発光に特有の煌きを擬似的に作り出すことができる。すなわち、電球形ランプ１０１は、フィラメントコイルを用いた白熱電球に近い発光特性を有する電球形ランプ１０１である。 That is, 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.
　なお、本変形例では、図１０および図１１に示すように、発光部３５０が有する複数の半導体発光素子１１２のＸＹ平面における位置と、導光体２５０に設けられた複数の光取出部２０１のＸＹ平面における位置とが一致している。 In this modification, as shown in FIGS. 10 and 11, 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.
　つまり、各半導体発光素子１１２の光軸上に光取出部２０１が配置されている。これにより、導光体２５０における複数の光取出部２０１それぞれの輝度をより向上させることができる。 That is, the light extraction unit 201 is disposed on the optical axis of each semiconductor light emitting element 112. Thereby, the brightness | luminance of each of the some light extraction part 201 in the light guide 250 can be improved more.
　また、このように、光源（発光部３５０）が台座１５０に配置された電球形ランプ１０１に用いられる導光体は、図１０および図１１に示す導光体２５０以外でもよい。そこで、電球形ランプ１０１に用いられる導光体の例を変形例８および変形例９として説明する。 In addition, 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.
　（変形例８）
　図１２は、実施の形態の変形例８に係る発光部３５０および導光体２６０の構成を示す図である。 (Modification 8)
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.
　図１２に示す発光部３５０は、図１１に示す発光部３５０と同じく、支柱１５１ではなく、台座１５０に支持されている。また、導光体２６０は、台座１５０からグローブ１４０内に向かって延設された縦軸部２６０ａと、縦軸部２６０ａの台座１５０とは反対側の端部に接続された横軸部２６０ｂであって、縦軸部２６０ａと交差する方向に長尺状の横軸部２６０ｂとを有する。 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 | intersects the vertical-axis part 260a.
　具体的には、本変形例では、横軸部２６０ｂは、ランプ軸１９０に平行な縦軸部２６０ａに直交するように導光体２６０に備えられている。このような形状の導光体２６０において、複数の光取出部２０１は、横軸部２６０ｂに、横軸部２６０ｂの長手方向に並んで配置されている。 Specifically, in this modification, 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. In the light guide 260 having such a shape, 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.
　このように、台座１５０に配置された発光部３５０の上方にＴ字状の導光体２６０を配置することで、例えば、比較的に横長のフィラメントコイルの発光状態を再現することができる。 Thus, by arranging 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.
　なお、例えば、横軸部２６０ｂの長手方向の中央部分に、発光部３５０から入射された光の進行方向を変更して外部に放出するための傾斜面部２０２（図４参照）を有してもよい。 In addition, for example, 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.
　これにより、発光部３５０から縦軸部２６０ａに入射され、横軸部２６０ｂに到達した光の一部を、少なくとも、図１２における左右方向に進行させることができる。つまり、横軸部２６０ｂの長手方向に並んだ複数の光取出部２０１それぞれの輝度を向上させることができる。 Thereby, a part of the light incident on the vertical axis 260a from the light emitting unit 350 and reaching the horizontal axis 260b can be advanced at least in the left-right direction in FIG. That is, the luminance of each of the plurality of light extraction units 201 arranged in the longitudinal direction of the horizontal axis portion 260b can be improved.
　また、例えば、縦軸部２６０ａの周面の少なくとも一部を、当該少なくとも一部から放出される光を縦軸部２６０ａの内方に反射する材料（金属膜等）で覆ってもよい。これにより、縦軸部２６０ａの下面から入射された光を効率よく横軸部２６０ｂに到達させることができる。つまり、横軸部２６０ｂ全体としての輝度を向上させるとともに、横軸部２６０ｂに設けられた複数の光取出部２０１それぞれの輝度をさらに向上させることができる。 Further, for example, 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. Thereby, 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.
　（変形例９）
　図１３は、実施の形態の変形例９に係る発光部３５０および導光体２７０の構成を示す斜視図である。 (Modification 9)
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.
　図１３に示す台座１５０には、２つの発光部３５０が配置されており、導光体２７０は、２つの発光部３５０のそれぞれからグローブ１４０内に延びるように設けられ、かつ、上面視において全体としてＵ字状の部分を有している。つまり、導光体２７０は、図９に示す変形例６に係る導光体２４０と同様の形状の部分を有している。 In the pedestal 150 shown in FIG. 13, two light emitting units 350 are arranged, and 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. As a U-shaped part. That is, 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.
　図１３に示す導光体２７０は、このような形状を採用することで、例えば、２本のリード線の間を撓んだ状態で接続するフィラメントコイルにおける煌きを擬似的に作り出すことができる。 By adopting such a shape, 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. .
　（実施の形態および変形例についての補足）
　以上、本発明に係る電球形ランプについて、実施の形態およびその変形例に基づいて説明したが、本発明は、これらの実施の形態および変形例に限定されるものではない。 (Supplementary information on embodiments and modifications)
Although the light bulb shaped lamp according to the present invention has been described based on the embodiments and the modifications thereof, the present invention is not limited to these embodiments and modifications.
　例えば、上記の実施の形態および変形例において、光取出部２０１は、半球状の凹形状であるとしたが、光取出部２０１の形状はこれに限られない。 For example, in the above-described embodiment and modification, the light extraction unit 201 has a hemispherical concave shape, but the shape of the light extraction unit 201 is not limited thereto.
　例えば、円錐状、円柱状、または角錐状の凹形状であってもよい。また、例えば、図１４に示す光取出部２０１ａのように、凹形状の内面に、さらに細かな凹形状の部分である副取出部２０３を有してもよい。 For example, it may be a conical, cylindrical, or pyramidal concave shape. Further, for example, as in the light extraction portion 201a shown in FIG. 14, the sub extraction portion 203 which is a finer concave portion may be provided on the concave inner surface.
　光取出部２０１ａは、このような構造を有することで、副取出部２０３を有しない光取出部２０１よりも、光の取出し効率を向上させることができる。なお、光取出部２０１ａは、導光体２１０等の、導光体２００以外の導光体の光取出部として採用可能である。 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. In addition, 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.
　また、図１５の（ａ）に示す導光体２８０のような、半球状の凸形状の部分である光取出部２０５を有する部材が、導光体として電球形ランプ１００および１０１に採用されてもよい。 Further, 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.
　この場合であっても、図１５の（ｂ）に示すように、光取出部２０５に入射する、導光体２８０の表面を基準とした場合の入射角が互いに異なる３つの光（Ｌｄ、Ｌｅ、Ｌｆ）のほとんどは光取出部２０５を介して外部に放出される。 Even in this case, as shown in FIG. 15B, three lights (Ld, Le having different incident angles with respect to the surface of the light guide 280, which are incident on the light extraction unit 205, are used as references. , Lf) is emitted to the outside through the light extraction unit 205.
　つまり、複数の光取出部２０５が配置された導光体２８０は、上述の導光体２００等と同じく、例えばフィラメントコイルによる発光に特有の煌きを擬似的に作り出すための部材として機能する。 That is, 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.
　また、光取出部２０５の形状も半球状に限定されず、例えば、円錐状、円柱状、または角錐状であってもよい。 Further, 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.
　なお、図１５の（ａ）に示す導光体２８０は、実施の形態に係る導光体２００（例えば図２参照）の複数の光取出部２０１を、光取出部２０５に置換した形状である。しかし半球状の凸形状の部分である光取出部２０５は、導光体２１０等の導光体２００以外の導光体の光取出部として採用可能である。 In addition, 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. . However, 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.
　また、光取出部２０１と光取出部２０５とを混在させるなど、互いに形状が異なる複数の光取出部が一つの導光体に設けられてもよい。 Also, 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.
　また、図９および図１３を用いて、上面視において全体としてＵ字状の部分を有する導光体２４０および２７０について説明したが、「全体としてＵ字状の部分」は、図９および図１３に示す形状以外の部分であってもよい。 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.
　例えば、図１６の（ａ）に示す導光体２９０のように、直角に曲がった部分を２つ有する形状であってもよく、図１６の（ｂ）に示す導光体２９１のように、屈曲した部分を持たず、全体として湾曲した形状であってもよい。また、一般にＶ字状と呼ばれる形状の部分が、「全体としてＵ字状の部分」に含まれてもよい。 For example, 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. In addition, a generally V-shaped portion may be included in the “U-shaped portion as a whole”.
　さらに、導光体が採用し得る形状としては、例えばジグザグ形状など、各種の形状が例示される。 Furthermore, examples of shapes that can be adopted by the light guide include various shapes such as a zigzag shape.
　また、導光体の断面形状も矩形に限られず、三角形等の、矩形以外の多角形であってもよく、断面の外形の少なくとも一部が曲線で構成されていてもよい。 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.
　また、光取出部２０１、２０１ａ、および２０５それぞれの形成の手法に特に限定はない。例えば、導光体２００の基体となる直方体の樹脂に、熱した球体を押し当てることで、当該基体の表面に光取出部２０１が形成されてもよい。また、例えば、射出成形により、複数の光取出部２０１を表面に有する導光体２００が作製されてもよい。 Also, there is no particular limitation on the method of forming each of the light extraction portions 201, 201a, and 205. For example, 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. Further, for example, the light guide body 200 having a plurality of light extraction portions 201 on the surface may be manufactured by injection molding.
　また、本発明は、電球形ランプ１００としてだけでなく、例えば、電球形ランプ１００を備える照明装置として実現することもできる。 Further, 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.
　図１７は、実施の形態に係る電球形ランプ１００を備える照明装置２の概略断面図である。 FIG. 17 is a schematic cross-sectional view of the lighting device 2 including the light bulb shaped lamp 100 according to the embodiment.
　図１７に示す照明装置２は、例えば、室内の天井に装着されて使用される装置である。照明装置２は、実施の形態に係る電球形ランプ１００と、点灯器具３とを備える。 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.
　点灯器具３は、点灯器具３に取り付けられた電球形ランプ１００を消灯及び点灯させる器具である。点灯器具３は、天井に取り付けられる器具本体４と、電球形ランプ１００を覆う透光性のランプカバー５とを備える。 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.
　器具本体４は、ソケット４ａを有する。ソケット４ａには、電球形ランプ１００の口金１８０がねじ込まれる。このソケット４ａを介して電球形ランプ１００に電力が供給される。 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.
　なお、照明装置２が備える電球形ランプ１００に、上述の変形例１～９のそれぞれで説明された特徴的な構造等が適用されてもよい。 It should be noted that the characteristic structures described in the first to ninth modifications may be applied to the light bulb shaped lamp 100 included in the lighting device 2.
　また、例えば、実施の形態に係る電球形ランプ１００に代えて、実施の形態の変形例７に係る電球形ランプ１０１が、照明装置２に備えられてもよい。 Further, for example, instead of the light bulb shaped lamp 100 according to the embodiment, the light bulb shaped lamp 101 according to the modified example 7 of the embodiment may be provided in the lighting device 2.
　また、上記の実施の形態および変形例において、発光部３００等の各種の発光部は、ＳＭＤ型のＬＥＤモジュールであるとしたが、これに限らない。例えば、ベアチップが基板１０５上に直接実装されたＣＯＢ（Ｃｈｉｐ　Ｏｎ　Ｂｏａｒｄ）型のＬＥＤモジュールが、発光部３００として採用されてもよい。 In the above-described embodiments and modifications, the various light emitting units such as the light emitting unit 300 are SMD type LED modules. However, the present invention is not limited to this. For example, 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.
　また、上記の実施の形態および変形例において、発光部３００等の各種の発光部は、青色ＬＥＤチップである半導体発光素子１１２と黄色蛍光体（蛍光体含有樹脂１１１）とによって白色光を放出するように構成したが、これに限らない。例えば、赤色蛍光体および緑色蛍光体を含有する蛍光体含有樹脂を用いて、これと青色ＬＥＤチップと組み合わせることにより白色光を放出するように構成しても構わない。 Further, in the above-described embodiments and modifications, 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). However, the present invention is not limited to this. For example, 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.
　また、半導体発光素子１１２として、青色以外の色を発光するＬＥＤチップが採用されてもよい。例えば、半導体発光素子１１２として紫外線発光のＬＥＤチップを用いる場合、蛍光体粒子としては、三原色（赤色、緑色、青色）に発光する各色蛍光体粒子を組み合わせたものを用いることができる。さらに、蛍光体粒子以外の波長変換材を用いてもよく、例えば、波長変換材として、半導体、金属錯体、有機染料、顔料など、ある波長の光を吸収し、吸収した光とは異なる波長の光を発する物質を含んでいる材料を用いてもよい。 Further, as the semiconductor light emitting element 112, an LED chip that emits a color other than blue may be adopted. For example, when an ultraviolet light emitting LED chip is used as the semiconductor light emitting element 112, the phosphor particles may be a combination of phosphor particles that emit light of three primary colors (red, green, and blue). Furthermore, a wavelength conversion material other than the phosphor particles may be used. For example, 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.
　また、発光部３００等の各種の発光部は、蛍光体含有樹脂１１１を有しなくてもよい。つまり、半導体発光素子１１２からの光であって波長変換が行われていない光が、発光部から放出されてもよい。 Further, 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.
　また、上記の実施の形態および変形例において、半導体発光素子１１２としてＬＥＤチップを例示したが、半導体レーザ等の半導体発光素子、有機ＥＬ（Ｅｌｅｃｔｒｏ　Ｌｕｍｉｎｅｓｃｅｎｃｅ）又は無機ＥＬ等の発光素子を、半導体発光素子１１２として採用してもよい。 In the above embodiments and modifications, the LED chip is exemplified as the semiconductor light emitting device 112. However, 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.
　また、上記の実施の形態および変形例では、グローブ１４０の大きさは筐体１６０の大きさよりも大きいとした。しかし、例えば、グローブ１４０の大きさを筐体１６０の大きさよりも小さくした電球形ランプにも、上述の発光部３００および導光体２００等の構成を適用することができる。 Further, in the above-described embodiment and modification, the size of the globe 140 is assumed to be larger than the size of the housing 160. However, for example, 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.
　その他、本発明の趣旨を逸脱しない限り、当業者が思いつく各種変形を本実施の形態および変形例に施したもの、又は、実施の形態および変形例における構成要素を組み合わせて構築される形態も、本発明の範囲内に含まれる。 In addition, unless departing from the gist of the present invention, various modifications conceived by those skilled in the art are applied to the present embodiment and modifications, or a form constructed by combining components in the embodiments and modifications, It is included within the scope of the present invention.
　本発明は、従来の白熱電球等を代替する電球形ランプ等として有用である。 The present invention is useful as a light bulb shaped lamp that replaces a conventional incandescent light bulb or the like.
　　　２　照明装置
　　　３　点灯器具
　　　４　器具本体
　　　４ａ　ソケット
　　　５　ランプカバー
　１００、１０１　電球形ランプ
　１０５　基板
　１１１　蛍光体含有樹脂
　１１２　半導体発光素子
　１２０　駆動回路
　１２１　回路基板
　１２２　回路素子
　１２２ａ、１２２ｂ　セラミックコンデンサ
　１２２ｃ　電解コンデンサ
　１２２ｄ　チョークコイル
　１２２ｅ　ノイズフィルタ
　１３０ａ、１３０ｂ、１３０ｃ、１３０ｄ　リード線
　１４０　グローブ
　１４１　開口部
　１５０　台座
　１５１、１５１ａ、１５１ｂ、１５１ｃ　支柱
　１６０　筐体
　１６２　螺合部
　１８０　口金
　１９０　ランプ軸
　２００、２１０、２２０、２３０、２４０、２５０、２６０、２７０、２８０、２９０、２９１　導光体
　２０１、２０１ａ、２０５　光取出部
　２０２　傾斜面部
　２０３　副取出部
　２１１　収容部
　２６０ａ　縦軸部
　２６０ｂ　横軸部
　３００、３１０、３２０、３５０　発光部
　３００ａ、３１０ａ　パッケージ DESCRIPTION OF SYMBOLS 2 Illuminating device 3 Lighting fixture 4 Appliance main body 4a Socket 5 Lamp cover 100, 101 Light bulb shaped lamp 105 Substrate 111 Phosphor-containing resin 112 Semiconductor light emitting element 120 Drive circuit 121 Circuit board 122 Circuit element 122a, 122b Ceramic capacitor 122c Electrolytic capacitor 122d Choke Coil 122e Noise filter 130a, 130b, 130c, 130d Lead wire 140 Globe 141 Opening 150 Pedestal 151, 151a, 151b, 151c Post 160 Housing 162 Screwing portion 180 Base 190 Lamp shaft 200, 210, 220, 230, 240 250, 260, 270, 280, 290, 291 Light guide 201, 201a, 205 Light extraction part 202 Inclined surface part 203 Sub extraction part 211 Storage part 260a Vertical Part 260b horizontal axis portion 300,310,320,350 emitting portion 300a, 310a package

Claims (9)

  1. 　グローブと、
    　基板に実装された発光部であって、前記グローブの内方に配置され、１以上の半導体発光素子を有する発光部と、
    　前記グローブの内方に配置され、前記発光部から入射された光を透過させて表面から放出する、前記基板とは別体である導光体とを備え、
    　前記導光体は、前記表面に離散的に配置された複数の光取出部であって、それぞれが、前記表面に設けられた凹形状または凸形状の部分である複数の光取出部を有する
    　電球形ランプ。     With the globe,
    A light-emitting unit mounted on a substrate, the light-emitting unit disposed inside the globe and having one or more semiconductor light-emitting elements;
    A light guide that is disposed inward of the globe and transmits light incident from the light emitting unit and emits the light from the surface, and is a separate body from the substrate;
    The light guide has a plurality of light extraction portions discretely arranged on the surface, each having a plurality of light extraction portions that are concave or convex portions provided on the surface. Shaped lamp.
  2. 　前記複数の光取出部のそれぞれは、半球状の凹形状または凸形状の部分である
    　請求項１記載の電球形ランプ。     The light bulb shaped lamp according to claim 1, wherein each of the plurality of light extraction portions is a hemispherical concave or convex portion.
  3. 　前記複数の光取出部は、前記導光体において、ランプ軸と交差する方向に並んで配置されている
    　請求項１または２に記載の電球形ランプ。     The light bulb shaped lamp according to claim 1 or 2, wherein the plurality of light extraction portions are arranged side by side in a direction intersecting a lamp axis in the light guide.
  4. 　さらに、前記グローブの開口部に配置された台座に立設され、前記台座から前記グローブ内に向かって延びるように設けられた支柱を備え、
    　前記発光部および前記導光体は、前記支柱の、前記台座とは反対側の端部に支持されていることで、前記グローブの中心領域に配置されている
    　請求項１～３のいずれか一項に記載の電球形ランプ。     Furthermore, the column is installed on a pedestal arranged in the opening of the globe, and includes a support column provided so as to extend from the pedestal into the globe.
    4. The light emitting unit and the light guide are disposed in a central region of the globe by being supported by an end of the column opposite to the pedestal. The light bulb shaped lamp described in the item.
  5. 　前記発光部は、ランプ軸に平行かつ前記支柱とは反対側の方向、および、前記ランプ軸と交差する方向に光を放射し、
    　前記導光体は、前記支柱側の面に、前記発光部を収容する陥凹状の収容部を有する
    　請求項４記載の電球形ランプ。     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 bulb-shaped lamp according to claim 4, wherein the light guide has a recessed housing portion that houses the light emitting portion on a surface on the column side.
  6. 　前記発光部は、ランプ軸と交差する方向に光を放射し、
    　前記導光体は、前記支柱の前記端部における前記発光部の側方であって、前記発光部の光の放射方向に配置されている
    　請求項４記載の電球形ランプ。     The light emitting unit emits light in a direction intersecting the lamp axis,
    5. The light bulb shaped lamp according to claim 4, wherein the light guide is disposed on a side of the light emitting unit at the end of the support column and in a light emission direction of the light emitting unit.
  7. 　さらに、前記グローブの開口部に配置された台座を備え、
    　前記発光部は、前記台座に配置されており、
    　前記導光体は、前記発光部から前記グローブ内に向かって延びるように設けられており、
    　前記複数の光取出部は、前記導光体の前記台座とは反対側の端部に設けられていることで、前記グローブの中心領域に配置されている
    　請求項１～３のいずれか一項に記載の電球形ランプ。     Furthermore, a pedestal disposed in the opening of the glove is provided,
    The light emitting unit is disposed on the pedestal,
    The light guide is provided so as to extend from the light emitting part into the globe,
    The plurality of light extraction portions are disposed in a central region of the globe by being provided at an end portion of the light guide opposite to the pedestal. The light bulb shaped lamp described in 1.
  8. 　前記導光体は、前記台座から前記グローブ内に向かって延設された縦軸部と、前記縦軸部の前記台座とは反対側の端部に接続された横軸部であって、前記縦軸部と交差する方向に長尺状の横軸部とを有し、
    　前記複数の光取出部は、前記横軸部に、前記横軸部の長手方向に並んで配置されている
    　請求項７記載の電球形ランプ。     The light guide is a vertical axis extending from the pedestal toward the inside of the globe, and a horizontal axis connected to an end of the vertical axis opposite to the pedestal, A long horizontal axis in a direction intersecting the vertical axis,
    The light bulb-shaped lamp according to claim 7, wherein the plurality of light extraction portions are arranged on the horizontal axis portion side by side in a longitudinal direction of the horizontal axis portion.
  9. 　前記導光体は、前記発光部から入射された光の進行方向を変更して外部に放出するための傾斜面部を有する
    　請求項１～８のいずれか一項に記載の電球形ランプ。     The light bulb shaped lamp according to any one of claims 1 to 8, wherein the light guide has an inclined surface portion for changing a traveling direction of light incident from the light emitting portion and emitting the light to the outside.
PCT/JP2013/003897 2012-08-30 2013-06-21 Bulb-type lamp WO2014033997A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-190623 2012-08-30
JP2012190623 2012-08-30

Publications (1)

Publication Number Publication Date
WO2014033997A1 true WO2014033997A1 (en) 2014-03-06

Family

ID=50182840

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/003897 WO2014033997A1 (en) 2012-08-30 2013-06-21 Bulb-type lamp

Country Status (1)

Country Link
WO (1) WO2014033997A1 (en)

Cited By (1)

* 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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007047437A2 (en) * 2005-10-18 2007-04-26 Goldeneye, Inc. Side emitting illumination systems incorporating light emitting diodes
JP2011175954A (en) * 2010-07-12 2011-09-08 Skg:Kk Lighting device
JP2012513083A (en) * 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 Light emitting device for producing a decorative lighting effect in a luminaire
JP2012155895A (en) * 2011-01-24 2012-08-16 Suntec Inc Led electric bulb

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007047437A2 (en) * 2005-10-18 2007-04-26 Goldeneye, Inc. Side emitting illumination systems incorporating light emitting diodes
JP2012513083A (en) * 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 Light emitting device for producing a decorative lighting effect in a luminaire
JP2011175954A (en) * 2010-07-12 2011-09-08 Skg:Kk Lighting device
JP2012155895A (en) * 2011-01-24 2012-08-16 Suntec Inc Led electric bulb

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

Similar Documents

Publication Publication Date Title
US11703190B2 (en) Light bulb shaped lamp
JP5830668B2 (en) Light emitting device and light source for illumination
KR20160092761A (en) Illumination device
JP2014110301A (en) Light-emitting device and illumination light source
JP5838309B2 (en) Light emitting device, illumination light source, and illumination device
WO2014033996A1 (en) Bulb-type lamp
WO2014033997A1 (en) Bulb-type lamp
JP2014157691A (en) Light emitting device and light source for lighting
US9441821B2 (en) Illumination light source and lighting apparatus
JP2014116227A (en) Light source for illumination and illumination device
JP6225397B2 (en) Illumination light source and illumination device
JP6601708B2 (en) LIGHTING DEVICE AND LIGHTING DEVICE MANUFACTURING METHOD
JP6112480B2 (en) Illumination light source and illumination device
JP5816847B2 (en) Light bulb shaped lamp and lighting device
JP6191813B2 (en) Illumination light source and illumination device
WO2014024339A1 (en) Bulb-type lamp, illumination device, and method for manufacturing bulb-type lamp
WO2014097534A1 (en) Illumination light source and illumination device
WO2014041721A1 (en) Light source for illumination and illumination device
WO2014097535A1 (en) Illumination light source and illumination device
JP2016162979A (en) Light-emitting apparatus and light source for illumination
JP2015061024A (en) Light emitting module
JP2019036398A (en) Light source for illumination and illumination device
JP2014116095A (en) Light emitting device and light source for illumination
JP2014146510A (en) Light source for lighting and lighting device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13833310

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13833310

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP