WO2014091657A1 - 照明用光源及び照明装置 - Google Patents
照明用光源及び照明装置 Download PDFInfo
- Publication number
- WO2014091657A1 WO2014091657A1 PCT/JP2013/006143 JP2013006143W WO2014091657A1 WO 2014091657 A1 WO2014091657 A1 WO 2014091657A1 JP 2013006143 W JP2013006143 W JP 2013006143W WO 2014091657 A1 WO2014091657 A1 WO 2014091657A1
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- WIPO (PCT)
- Prior art keywords
- cover member
- mounting substrate
- light source
- light emitting
- present
- Prior art date
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- 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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
- F21V19/0055—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by screwing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
- F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
-
- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/001—Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
- F21V23/002—Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
-
- 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
- F21V31/00—Gas-tight or water-tight arrangements
- F21V31/005—Sealing arrangements therefor
-
- 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
- F21V7/00—Reflectors for light sources
- F21V7/0008—Reflectors for light sources providing for indirect lighting
- F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2105/00—Planar light sources
- F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
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- 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]
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- 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
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
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- 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
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
- G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
- H01L2224/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
- H01L2224/45001—Core members of the connector
- H01L2224/45099—Material
- H01L2224/451—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
- H01L2224/45138—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
- H01L2224/45144—Gold (Au) as principal constituent
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48135—Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip
- H01L2224/48137—Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip the bodies being arranged next to each other, e.g. on a common substrate
Definitions
- the present invention relates to an illumination light source and an illumination device, and more particularly, to an illumination light source using a light emitting diode (LED) and an illumination device using the illumination light source.
- LED light emitting diode
- LEDs are used as light sources for various products because of their high efficiency and long life.
- lamps using LEDs LED lamps
- illumination light sources that can be substituted for conventionally known fluorescent lamps, incandescent lamps, and the like.
- LED lamp examples include a bulb-type LED lamp (LED bulb) that replaces a bulb-type fluorescent lamp and an incandescent bulb, and a straight-tube LED lamp that substitutes for a straight-tube fluorescent lamp.
- LED bulb a bulb-type LED lamp
- incandescent bulb a bulb-type fluorescent lamp
- straight-tube LED lamp that substitutes for a straight-tube fluorescent lamp.
- Patent Document 1 discloses a conventional bulb-type LED lamp.
- Patent Document 2 discloses a conventional straight tube LED lamp.
- an LED module is disposed as a light source.
- the LED module includes, for example, a mounting board and a plurality of LEDs mounted on the mounting board.
- the LED module is fixed on a base (heat sink) arranged in the LED lamp. There are several methods for fixing the LED module and the base.
- a plurality of (for example, three) through holes are provided in the mounting board on which the LED is mounted, and screw holes are provided in the base, and the mounting board and the base are directly connected using the through holes and the screw holes. There is a method of screwing.
- the method of directly screwing the mounting board has the following problems.
- the mounting substrate is a resin substrate such as a glass epoxy substrate or a metal substrate such as a metal base substrate
- the outer peripheral edge of the mounting substrate warps or the inside of the mounting substrate floats and warps
- adhesiveness falls and heat dissipation falls.
- the mounting substrate is a ceramic substrate
- the ceramic substrate is cracked or chipped by the tightening force of the screws because the ceramic is hard and brittle.
- the mounting substrate is not directly screwed, but the peripheral edge of the mounting substrate is pressed by a pressing member (metal plate spring or the like).
- a pressing member metal plate spring or the like.
- the conventional pressing member is disposed outside the light emitting portion (LED), the light emitted from the light emitting portion to the side is kicked by the pressing member. For this reason, there is a problem in that the luminous efficiency is deteriorated, or the kicked light becomes turbulent light and the luminance distribution becomes non-uniform so that the light distribution characteristic is deteriorated.
- the pressing member since the pressing member only presses the peripheral edge of the mounting substrate, if the mounting substrate is a resin substrate or a metal substrate, the mounting substrate thermally expands due to the heat generated by the LED, and the central portion floats on the mounting substrate. Warping occurs.
- the present invention has been made to solve such a problem, and an illumination light source capable of suppressing the occurrence of warping and cracking or chipping of a mounting substrate without degrading the light distribution characteristics, and An object is to provide a lighting device.
- an aspect of the light source for illumination includes a base, a mounting substrate disposed on the base, and a plurality of light emitting elements mounted on a main surface of the mounting substrate. And a cover member that covers a partial region of the main surface of the mounting substrate; and a fastening member that tightens the base and the cover member with the mounting substrate interposed therebetween, wherein the plurality of light emitting elements includes the cover It is mounted so as to surround the member.
- the plurality of light emitting elements are annularly arranged on a peripheral portion of the mounting substrate, and the cover member is inside the plurality of light emitting elements arranged in an annular shape. It may be arranged in the area.
- the cover member has a through hole for allowing the fastening member to pass therethrough, and a part of the cover member is positioned outside the through hole. It is good.
- the opening diameter of the through hole of the mounting substrate may be larger than the opening diameter of the through hole of the cover member.
- the opening shape of the through hole of the mounting board is a first direction that is a direction along a straight line connecting the center of the mounting board and the center of the through hole. May be longer than the length in the second direction, which is a direction perpendicular to the first direction.
- the cover member may have a bottomed cylindrical shape having a cylindrical frame portion having an opening in surface contact with the main surface of the mounting substrate.
- the side surface of the frame portion may be an inclined surface, and the opening area of the frame portion may be reduced as the distance from the mounting substrate increases.
- a conductive member provided on the main surface of the mounting substrate may be further provided, and the conductive member may be housed inside the cover member.
- the conductive member includes a power supply unit that receives power for causing the plurality of light emitting elements to emit light from the outside, the power supply unit, and the plurality of light emitting elements. It may be at least one of a wiring that is electrically connected and a protective element that electrostatically protects the plurality of light emitting elements.
- the cover member further includes a power supply unit that is provided on a main surface of the mounting substrate and receives power for causing the light emitting elements to emit light from the outside. May be provided with a pressing portion for pressing the connector portion of the lead wire connected to the power supply portion.
- the cover member may be configured such that a part of the frame portion extends outward when the cover member is tightened by the tightening member.
- the cover member may be plate-shaped and in surface contact with the main surface of the mounting substrate.
- the cover member may have a lens function.
- the cover member may be provided with a recess for accommodating an end of the fastening member.
- the fastening member may be a screw.
- the plurality of light emitting elements are a plurality of light emitting diode chips mounted directly on the base, and the mounting substrate further includes the plurality of light emitting diode chips.
- a sealing member that collectively seals the light-emitting diode chips may be formed.
- the light emitting element includes a container having a recess, a light emitting diode chip mounted in the recess, and a sealing member sealed in the recess. Also good.
- the sealing member may include a wavelength conversion material that converts a light emission wavelength of the light emitting diode chip.
- an aspect of the illumination device according to the present invention is characterized by including any one aspect of the illumination light source.
- the mounting substrate on which the light emitting element is mounted is fixed to the base, it is possible to suppress the occurrence of warpage and chipping or cracking of the mounting substrate without deteriorating the light distribution characteristics.
- FIG. 1 is a perspective view showing a configuration around a light emitting device in an illumination light source according to Embodiment 1 of the present invention.
- FIG. 2A is a plan view showing the configuration around the light emitting device in the illumination light source according to Embodiment 1 of the present invention, and
- FIG. 2B is the AA ′ line in FIG. It is sectional drawing of the periphery of the light-emitting device in the light source for illumination in.
- FIG. 3 is a diagram showing a configuration around the first through hole of the mounting board in the illumination light source according to the first modification of the first embodiment of the present invention.
- FIG. 4A is a plan view of a light-emitting device according to Modification 2 of Embodiment 1 of the present invention, and FIG.
- FIG. 4B is a configuration around the first through hole of the mounting substrate in the illumination light source.
- FIG. FIG. 5 is a perspective view showing a configuration around the light emitting device in the illumination light source according to Embodiment 2 of the present invention.
- FIG. 6 (a) is a partial plan view showing the configuration around the light emitting device in the illumination light source according to Embodiment 2 of the present invention, and
- FIG. 6 (b) is the same as the AA ′ line in FIG. It is sectional drawing of the light-emitting device periphery in the light source for illumination.
- FIG. 7 is a diagram showing a configuration of a modified example of the cover member according to Embodiment 2 of the present invention.
- FIG. 8 is a diagram showing a configuration of another modified example of the cover member according to Embodiment 2 of the present invention.
- FIG. 9A is a perspective view showing a configuration around a light-emitting device in an illumination light source according to a modification of Embodiment 2 of the present invention.
- FIG. 9B is a cross-sectional view (cross-sectional view taken along the line A-A ′ of FIG. 9A) showing the configuration around the first through hole in the modification of the second embodiment of the present invention.
- FIG. 10A is a perspective view showing the configuration around the light emitting device in the illumination light source according to Embodiment 3 of the present invention.
- FIG. 10B is a cross-sectional view (cross-sectional view taken along line B1-B1 ′ of FIG.
- FIG. 10A showing the configuration around the first through hole in the third embodiment of the present invention.
- FIG. 11 is a figure for demonstrating the effect
- FIG. 12 is a perspective view showing a configuration around the light emitting device in the illumination light source according to Embodiment 4 of the present invention.
- FIG. 13 is a plan view showing the configuration around the light emitting device in the illumination light source according to Embodiment 4 of the present invention.
- FIG. 14 is a perspective view showing the configuration around the light emitting device in the illumination light source according to Embodiment 5 of the present invention.
- FIG. 15A is a plan view showing a configuration around the light-emitting device in the illumination light source according to Embodiment 5 of the present invention.
- FIG. 15B is a cross-sectional view (cross-sectional view taken along the line C-C ′ in FIGS. 14 and 15A) showing the configuration around the first through hole and the pressing portion in the fifth embodiment of the present invention.
- FIG. 16A is a plan view showing a configuration around a light-emitting device in an illumination light source according to Modification 1 of Embodiment 5 of the present invention.
- FIG. 16B is a cross-sectional view (cross-sectional view taken along the line C-C ′ of FIG.
- FIG. 17A is a plan view showing a configuration around a light-emitting device in an illumination light source according to Modification 2 of Embodiment 5 of the present invention.
- FIG. 17B is a cross-sectional view (cross-sectional view taken along the line D-D ′ in FIG. 17A) showing the configuration around the first through hole and the pressing portion in Modification 2 of Embodiment 5 of the present invention.
- FIG. 18 is a perspective view showing the configuration around the light emitting device in the illumination light source according to Embodiment 6 of the present invention.
- FIG. 19 is a perspective view showing the configuration around the light emitting device in the illumination light source according to Embodiment 7 of the present invention.
- FIG. 20A is a cross-sectional view (a cross-sectional view taken along line E1-E1 ′ of FIG. 19) showing the configuration of the cover member and the mounting board according to Embodiment 7 of the present invention.
- FIG. 20B is a cross-sectional view (a cross-sectional view taken along line E2-E2 ′ of FIG. 19) showing the configuration of the first through hole and the protrusion in Embodiment 7 of the present invention.
- FIG. 21A is an external perspective view of a lighting apparatus according to Embodiment 8 of the present invention.
- FIG. 21B is a cross-sectional view of the lighting apparatus according to Embodiment 8 of the present invention taken along the line A-A ′ of FIG. 21A.
- FIG. 21C is a cross-sectional view of a lighting device according to a modification of Embodiment 8 of the present invention.
- FIG. 22 is a diagram showing a configuration of a lens unit in the illumination device according to Embodiment 8 of the present invention.
- FIG. 23 is a cross-sectional view of a light bulb shaped lamp according to Embodiment 9 of the present invention.
- FIG. 24A is an external perspective view of an LED lamp according to Embodiment 10 of the present invention.
- FIG. 24B is a cross-sectional view of the LED lamp according to Embodiment 10 of the present invention.
- FIG. 25A is a plan view showing a configuration around the light emitting device in the illumination light source according to the first modification of the embodiment of the present invention, and FIG. It is sectional drawing of the periphery of the light-emitting device in the light source for the illumination in A 'line.
- FIG. 26 (a) is a plan view showing a configuration around the light emitting device in the illumination light source according to the second modification of the embodiment of the present invention, and FIG. 26 (b) is a cross-sectional view taken along line A- of FIG. It is sectional drawing of the periphery of the light-emitting device in the light source for the illumination in A 'line.
- FIG. 26 (a) is a plan view showing a configuration around the light emitting device in the illumination light source according to the second modification of the embodiment of the present invention
- FIG. 26 (b) is a cross-sectional view taken along line A- of FIG. It is sectional drawing of the periphery of the light-emitting device in the light
- FIG. 27A is a diagram showing a configuration of a cover member in an illumination light source according to the second modification of the embodiment of the present invention.
- FIG. 27B is a diagram showing another configuration of the cover member in the illumination light source according to the second modification of the embodiment of the present invention.
- FIG. 28 (a) is a perspective view showing a configuration around a light emitting device in an illumination light source according to the third modification of the embodiment of the present invention, and
- FIG. 28 (b) is a cross-sectional view of FIG. It is sectional drawing of the periphery of the light-emitting device in the light source for the illumination in C 'line.
- FIG. 29A is a plan view of Modification 1 of the light-emitting device according to the present invention.
- FIG. 29A is a plan view of Modification 1 of the light-emitting device according to the present invention.
- 29B is a plan view of a second modification of the light emitting device according to the present invention.
- 30A is a partial plan view showing a modification of the cover member in the illumination light source according to the present invention.
- FIGS. 30B to 30D are cover members in the illumination light source according to the present invention. It is sectional drawing which shows this modification.
- Embodiment 1 First, the configuration around the light emitting device in the illumination light source according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 and 2.
- FIG. 1 is a perspective view showing a configuration around a light emitting device in an illumination light source according to Embodiment 1 of the present invention.
- 2A is a plan view showing a configuration around the light emitting device in the illumination light source
- FIG. 2B is a diagram of the illumination light source along the line AA ′ in FIG. 2A. It is sectional drawing of a light-emitting device periphery.
- LED lamps such as a lightbulb-type LED lamp (LED light bulb) are mentioned as an illumination light source, for example.
- the illumination light source includes a light emitting device 10 serving as a light source, a base 20 on which the light emitting device 10 is placed, a cover member 30 attached to the light emitting device 10, A fastening member 40 for fastening the base 20 and the cover member 30 with the light emitting device 10 interposed therebetween is provided.
- the light emitting device 10 in the present embodiment has a COB structure in which the LED 12 that is a bare chip is directly mounted on the mounting substrate 11.
- the light emitting device 10 supplies power to the mounting substrate 11, the plurality of LEDs 12 mounted on the main surface of the mounting substrate 11, the sealing member 13 that seals the LEDs 12, and the LEDs 12. And a power supply unit 14.
- the light emitting device 10 further includes a wiring 15 and a wiring pad 16 that are patterned in a predetermined shape on the mounting substrate 11, a wire 17 connected to the LED 12, and a protection element 18 that electrostatically protects the LED 12.
- the mounting substrate 11 is an LED mounting substrate for mounting the LED 12, and is disposed on the base 20.
- the mounting substrate 11 in the present embodiment is a wiring substrate on which wirings 15 are formed.
- the mounting substrate 11 is provided with a first through hole 11a.
- the first through hole 11a is a fixing opening for allowing the fastening member 40 to pass therethrough.
- the first through holes 11 a are provided in the inner region (inner region) of the sealing member 13, and can be provided, for example, at three locations on the mounting substrate 11.
- the mounting substrate 11 is provided with a second through hole 11b.
- the second through hole 11 b is a wiring opening through which the lead wire 50 connected to the power supply unit 14 passes.
- the second through hole 11 b is provided in an inner region (inner region) of the sealing member 13, for example, in the central portion of the mounting substrate 11.
- both the first through hole 11a and the second through hole 11b are formed in an inner region of the annular sealing member 13.
- the first through hole 11a and the second through hole 11b can be formed by, for example, laser processing a ceramic substrate.
- a plurality of LEDs 12 are mounted in a ring shape on the main surface of the mounting substrate 11.
- the LEDs 12 on the mounting substrate 11 are mounted so as to surround the cover member 30.
- the plurality of LEDs 12 are arranged in a line as an annular element array so as to have a square frame shape (b).
- the LEDs 12 are arranged along the peripheral edge of the mounting substrate 11. Specifically, the LEDs 12 are arranged in a line along each side in the vicinity of each of the four sides of the square mounting substrate 11.
- the sealing member 13 is formed in an annular shape along the arrangement of the LEDs 12 so as to cover the LEDs 12. In this Embodiment, since several LED12 is arranged in a line so that it may become a square frame shape, the sealing member 13 is formed in the linear form so that the square arrangement
- the sealing member 13 is continuously formed without interruption so as to collectively seal all the LEDs 12.
- the sealing member 13 that seals the LED 12 serves as a light emitting portion. That is, the sealing member 13 that seals the LED 12 becomes an annular light emitting portion, and white light is emitted from the sealing member 13, for example.
- the electric power supply part 14 is provided in the internal area
- the base 20 is a support base that supports the light emitting device 10 and is provided in a housing such as an LED lamp.
- the light emitting device 10 is disposed and fixed on the base 20.
- a mounting surface for mounting the light emitting device 10 is formed on the base 20. As shown in FIG. 2B, the mounting substrate 11 of the light emitting device 10 is placed on the placement surface of the base 20.
- the base 20 also functions as a heat sink that dissipates heat generated by the light emitting device 10. Accordingly, the base 20 is preferably configured using a metal material such as aluminum or a resin material having high thermal conductivity.
- the base 20 is provided with a fixing hole 20a for fixing the fastening member 40.
- the fixing hole 20a is a screw hole into which the screw is screwed, and has a threaded portion on the inner surface.
- the fixing hole 20 a is provided so as to correspond to the first through hole 11 a of the mounting substrate 11 and the first through hole 31 of the cover member 30.
- the base 20 is formed with an insertion hole through which the lead wire 50 connected to the power supply unit 14 is passed.
- the insertion holes are provided so as to correspond to the second through holes 11 b of the mounting substrate 11 and the second through holes 32 of the cover member 30.
- the cover member 30 is configured to cover a part of the main surface of the mounting substrate 11.
- the cover member 30 in the present embodiment is a plate-shaped member having a predetermined shape, and the entire surface on the mounting substrate 11 side is in surface contact with the main surface of the mounting substrate 11.
- the cover member 30 can be configured using, for example, an insulating resin material such as polybutylene terephthalate (PBT).
- the cover member 30 is arrange
- the cover member 30 is formed in the inner region of the annular sealing member 13. That is, the cover member 30 is provided inside a region surrounded by the annular light emitting unit.
- the first through hole 31 is provided in the cover member 30.
- the 1st through-hole 31 is comprised so that the fastening member 40 may be passed through and the fastening member 40 may be latched and held.
- the first through holes 31 are provided in the inner region (inner region) of the annular sealing member 13, and can be provided, for example, at three locations on the cover member 30 as shown in FIG. . As shown in FIG. 2B, the first through hole 31 is provided so as to correspond to the fixing hole 20 a of the base 20 and the first through hole 11 a of the mounting substrate 11.
- the first through hole 31 has a structure for holding the screw head of the screw. That is, the first through hole 31 is configured so that the entire fastening member 40 does not pass through the first through hole 31.
- the first through hole 31 may have a structure such that the screw head of the screw is caught so that the screw head of the screw does not pass through the first through hole 31. . In this case, it is preferable that a recess for accommodating the end of the fastening member 40 is provided.
- each first through hole 31 is provided with a storage portion (counterbore portion) 31a for storing the screw head of the screw.
- a step portion is formed so that the screw head is caught. That is, the first through hole 31 is configured to have two different hole diameters, and the smaller hole diameter is smaller than the diameter of the screw head of the screw.
- the cover member 30 is provided with a second through hole 32.
- the second through hole 32 is a wiring opening through which the lead wire 50 connected to the power supply unit 14 passes.
- the second through hole 32 is also provided in the inner region (inner region) of the sealing member 13.
- the second through holes 32 are provided so as to correspond to the insertion holes of the base 20 and the second through holes 11 b of the mounting substrate 11.
- the cover member 30 is preferably configured to cover a wide area of the main surface of the mounting substrate 11 in the inner area of the annular sealing member 13, and at least a part of the cover member 30 is outside the first through hole 31. It is preferable to be located at.
- the cover member 30 in the present embodiment includes a peripheral region of the sealing member 13 that covers the protection element 18 and an electric power supply unit 14 in the inner region of the annular sealing member 13. It is comprised so that the area
- the fastening member 40 is a component for fastening the base 20 and the cover member 30 with the mounting substrate 11 interposed therebetween, and for example, a screw or the like can be used.
- the cover member 30 and the mounting substrate 11 can be fixed to the base 20 by the tightening member 40.
- a bolt and a nut can be used as the fastening member 40.
- the mounting substrate 11 of the light emitting device 10 is mounted on the base so that the openings of the fixing hole 20a of the base 20 and the first through holes 11a of the mounting substrate 11 coincide. 20 is placed. Thereafter, the cover member 30 is disposed on the mounting substrate 11 so that the openings of the first through hole 11a of the mounting substrate 11 and the first through hole 31 of the cover member 30 coincide with each other. Thereafter, when a screw (male screw) is used as the fastening member 40, the first through hole 31 of the cover member 30 and the first through hole 11 a of the mounting substrate 11 so that the screw head is held by the cover member 30.
- a screw male screw
- the screw shaft is inserted into the screw 20 and the screwed portion of the screw is screwed into the screwed portion of the fixing hole 20 a (female screw) of the base 20. Thereby, the cover member 30 and the mounting substrate 11 can be fixed to the base 20.
- the mounting substrate 11 is pressed by the cover member 30.
- the plate-like cover member 30 is configured to cover a wide area of the main surface of the mounting substrate 11 in the inner area of the annular sealing member 13, the cover member 30 extends over a wide area. It is in surface contact with the mounting substrate 11. Thereby, it is possible to apply pressure to the mounting substrate 11 in a wide area of the inner region of the annular sealing member 13.
- the lead wire 50 is a power supply lead wire for supplying power to the light emitting device 10.
- the lead wire 50 is connected to the connector portion 51 attached to the socket of the power supply portion 14 and a pair of connectors connected to the connector portion 51.
- the conductive line 52 is included.
- the connector part 51 includes a substantially rectangular resin molded part configured to be fitted to the socket of the power supply part 14 and a conductive part provided in the resin molded part.
- the pair of conductive wires 52 can be constituted by, for example, a vinyl wire in which a metal core wire is coated with a resin.
- the lead wire 50 is configured to pass DC power
- the pair of conductive wires 52 includes a positive voltage supply line that supplies a positive voltage and a negative voltage supply line that supplies a negative voltage. .
- the lead wire 50 does not need to have the connector part 51, for example, can also be comprised only with a pair of vinyl wire.
- the power supply unit 14 is a pair of metal electrodes (metal film), and the metal core wire of the pair of lead wires (vinyl wire) with the tips exposed is soldered to the pair of power supply units 14 respectively.
- the power supply unit 14 and the lead wire (vinyl wire) can be electrically connected.
- the mounting substrate 11 having a square shape in plan view (a shape when viewed from the direction perpendicular to the main surface of the mounting substrate 11) can be used.
- the planar view shape of the mounting substrate 11 is not limited to a square, and other shapes such as a quadrangle such as a rectangle, a polygon such as a hexagon or an octagon, or a circle may be used.
- a ceramic substrate made of ceramic, a resin substrate made of resin, an insulating substrate such as a glass substrate, and a metal base substrate (metal substrate) in which an insulating film is coated on a metal plate can be used.
- the ceramic substrate can be formed using, for example, aluminum oxide (alumina) or aluminum nitride.
- the resin substrate is, for example, a rigid substrate such as a glass epoxy substrate or a flexible flexible substrate made of polyimide or the like.
- the metal base substrate is, for example, an aluminum alloy substrate, an iron alloy substrate, a copper alloy substrate, or the like.
- the mounting substrate 11 it is preferable to use a white substrate having a high light reflectance (for example, a light reflectance of 90% or more).
- a white substrate having a high light reflectance for example, a light reflectance of 90% or more.
- a ceramic substrate is used as the mounting substrate 11.
- the ceramic substrate has a higher thermal conductivity than the resin substrate, and can efficiently dissipate the heat of the LED 12. Moreover, the ceramic substrate has little deterioration over time and is excellent in heat resistance.
- a white polycrystalline alumina substrate (polycrystalline ceramic substrate) having a thickness of about 1 mm constituted by firing alumina particles
- a polycrystalline alumina substrate can be produced by adding a binder to a mixture of alumina particles as a raw material, a scatterer, and a sintering aid (additive), press molding, and then firing. The raw material alumina particles grow and crystallize by firing.
- the LED 12 is an example of a light emitting element, and is a semiconductor light emitting element that emits light with a predetermined power.
- the plurality of LEDs 12 on the mounting substrate 11 can have the same Vf characteristics, but the Vf of each LED 12 may vary somewhat, and the total Vf in the entire element array of the LEDs 12 connected in series is predetermined. It only has to be within the variation.
- Each LED 12 is a bare chip that emits monochromatic visible light, and in this embodiment, a blue light emitting LED chip that emits blue light when energized is used.
- the blue LED chip for example, a gallium nitride based semiconductor light emitting device having a central wavelength of 440 nm to 470 nm, which is made of an InGaN based material, can be used.
- the planar view shape of the LED 12 (the shape when viewed from the direction perpendicular to the main surface of the mounting substrate 11) is a rectangle.
- the LED 12 is preferably arranged so that the long side of the rectangle of the LED 12 and one side of the polygonal mounting substrate 11 adjacent to the LED 12 are substantially parallel.
- the LEDs 12 are preferably arranged so that the long sides of the LEDs 12 are along one side of the mounting substrate 11 that is close.
- the mounting substrate 11 has a square shape in plan view
- the long side of the LED 12 and the square of the mounting substrate 11 may be arranged in parallel.
- Each LED 12 has a p-side electrode (not shown) and an n-side electrode (not shown), and a wire 17 is connected to the p-side electrode and the n-side electrode.
- adjacent LEDs 12 on each side of the mounting substrate 11 are directly connected by a wire 17. That is, the LEDs 12 on each side of the mounting substrate 11 are wire-bonded by chip-to-chip.
- the cathode electrode of one LED 12 and the anode electrode of the other LED 12 are connected by the wire 17. Yes.
- the sealing member 13 can be comprised, for example with a translucent resin material, when it is necessary to convert the wavelength of the light of LED12 into a predetermined wavelength, the wavelength conversion material is mixed.
- the sealing member 13 in the present embodiment is a wavelength conversion member that includes a phosphor as a wavelength conversion material and converts the wavelength (color) of light emitted from the LED 12.
- Such a sealing member 13 can be constituted by, for example, an insulating resin material (phosphor-containing resin) containing phosphor particles. The phosphor particles are excited by light emitted from the LED 12 and emit light of a desired color (wavelength).
- the sealing member 13 As a resin material constituting the sealing member 13, for example, a silicone resin can be used. Further, a light diffusing material may be dispersed in the sealing member 13. Note that the sealing member 13 is not necessarily formed of a resin material, and can be formed of an inorganic material such as a low-melting glass or a sol-gel glass in addition to an organic material such as a fluorine-based resin.
- the phosphor particles to be contained in the sealing member 13 for example, when the LED 12 is a blue light emitting LED that emits blue light, for example, YAG-based yellow phosphor particles can be used to obtain white light. As a result, part of the blue light emitted from the LED 12 is converted into yellow light by the yellow phosphor particles contained in the sealing member 13. Then, the blue light that has not been absorbed by the yellow phosphor particles and the yellow light that has been wavelength-converted by the yellow phosphor particles are diffused and mixed in the sealing member 13 so that the white light is emitted from the sealing member 13. And emitted. In addition, particles such as silica are used as the light diffusing material.
- the sealing member 13 in the present embodiment is made of a phosphor-containing resin in which predetermined phosphor particles are dispersed in a silicone resin, and can be formed by applying and curing the main surface of the mounting substrate 11 with a dispenser. it can.
- the discharge nozzle of the dispenser is disposed opposite to a predetermined position on the mounting substrate 11, and the sealing member material (phosphor-containing resin) is discharged from the discharge nozzle along the arrangement direction of the LEDs 12.
- the discharge nozzle is moved in a predetermined direction on the mounting substrate 11. At this time, the sealing member material is discharged so as to cover the wire 17 together with the LED 12.
- the application of the sealing member material returns from a location on the mounting substrate 11 to the original location so as to draw a square with a single stroke. In this way, the operation is performed once. After applying the sealing member material, the sealing member material is cured by a predetermined method.
- coating is a substantially semicircle, for example.
- the sealing member 13 also seals the protective element 18.
- the sealing member 13 can be formed along the arrangement of the protection elements 18 and is formed in a straight line in the present embodiment.
- the sealing member 13 that covers the protection element 18 can be formed by the same method using the same material as the sealing member 13 that seals the LED 12. By covering the protection element 18 with the sealing member 13, it is possible to suppress the deterioration of the protection element 18.
- the sealing member 13 that covers the protection element 18 may not contain a phosphor, but the sealing member 13 that seals the protection element 18 and the sealing member 13 that seals the LED 12 are made of the same material. By doing, sealing of the protection element 18 and sealing of the LED 12 can be performed in the same process. Thereby, manufacturing cost can be reduced.
- the power supply unit 14 (power supply terminal) is an external connection terminal (electrode terminal) that receives predetermined power from the outside of the light emitting device 10.
- the power supply unit 14 receives DC power for causing the LEDs 12 to emit light, and supplies the received DC power to each LED 12 via the wiring 15 and the wires 17.
- the received DC power is also supplied to the protection element 18.
- the power supply unit 14 is configured as a socket type, and includes a resin socket and a plurality of conductive pins for receiving DC power.
- the plurality of conductive pins have a positive voltage side conductive pin and a negative voltage side conductive pin, and are electrically connected to the wiring 15 formed on the mounting substrate 11.
- the power supply unit 14 may be a metal electrode instead of a socket type.
- the metal electrode may be formed as a positive voltage side metal electrode and a negative voltage side metal electrode.
- the metal electrode can be patterned simultaneously with the wiring 15.
- the wiring 15 is formed to electrically connect the LED 12 and the power supply unit 14. That is, the wiring 15 is a conductive wiring through which a current for causing the LED 12 to emit light, and can be a metal wiring, for example.
- the power supplied to the light emitting device 10 is supplied to each LED 12 by the wiring 15.
- the wiring 15 is formed in a predetermined shape so that the plurality of LEDs 12 on the mounting substrate 11 are in a predetermined electrical connection.
- the wiring 15 is formed so that all the LEDs 12 are connected in combination of series and parallel.
- the wiring 15 is also formed to electrically connect the protection element 18 and the power supply unit 14.
- an island-like wiring 15 is formed between adjacent protection elements 18, and the protection element 18 and the island-like wiring 15 are connected by a wire 17.
- the wiring 15 can be formed, for example, by patterning or printing a metal film made of a metal material.
- a metal material of the wiring 15 for example, Au (gold), silver (Ag), copper (Cu), or the like can be used.
- the wiring 15 in the present embodiment is configured using gold.
- the wiring 15 exposed from the sealing member 13 is preferably covered with a glass film (glass coat film) made of a glass material or a resin film (resin coat film) made of a resin material.
- a glass film glass coat film
- resin film resin coat film
- the wiring pad 16 is electrically connected to the plurality of LEDs 12 and the wiring 15.
- the wiring pad 16 is formed at a corner (corner) of the array shape of the LEDs 12. That is, when the arrangement shape of the LEDs 12 in the plan view of the mounting substrate 11 is a polygon, the wiring pad 16 is formed at the corner of the polygon. In other words, the wiring pads 16 are arranged in the same row as the LEDs 12, and a polygon is formed by the wiring pads 16 arranged at each corner and the plurality of LEDs 12 arranged so as to correspond to each side. It is configured. For example, when the arrangement shape of the LEDs 12 is a square, the wiring pads 16 are formed at four corners of the square.
- the wiring pad 16 is formed at a position corresponding to the corner of the mounting substrate 11. That is, since the mounting substrate 11 has a square shape in plan view, the wiring pad 16 is formed at four corners of the square.
- the wiring pads 16 at the corners of the mounting substrate 11, when the sealing member 13 is applied, the number of changes in the application direction (angle) at the corners can be reduced. Thereby, since the process of apply
- the wires 17 are slanted.
- the application of the sealing member 13 is performed once (90 °) at the corners of the mounting substrate 11, the wire 17 may protrude from the sealing member 13. If the wire 17 is not protruded, the wire 17 is stretched inward, so that it is necessary to apply the sealing member 13 at the corner so as to be curved or to change the angle twice. The sealing member 13 cannot be easily applied.
- wire connection is performed at the corners of the mounting substrate 11 using the wiring pads 16. Therefore, since it can suppress that a wire protrudes from the sealing member 13, the fall of the brightness
- the wire 17 is a conductive wire such as a gold wire. As described above, the wires 17 directly connect the adjacent LEDs 12 on each side of the mounting substrate 11. Further, as described above, the wires 17 are laid on the LEDs 12 and the wiring pads 16 at the corners of the mounting substrate 11. The wire 17 is preferably embedded in the sealing member 13 so as not to be exposed from the sealing member 13.
- the protection element 18 prevents the LED 12 having a low reverse withstand voltage from being destroyed by static electricity having a reverse polarity generated on the mounting substrate 11. For this reason, the protection element 18 is disposed so as to be connected in parallel with a polarity opposite to that of the LED 12.
- a Zener diode or the like can be used as the protective element 18.
- One or more protection elements 18 are mounted on the mounting substrate 11. As shown in FIGS. 1 and 2, in the present embodiment, five Zener diodes are mounted as the protection elements 18.
- the protection element 18 is sealed by the sealing member 13.
- the sealing member 13 can be formed along the arrangement of the protection elements 18 and is formed in a straight line in the present embodiment.
- the sealing member 13 that covers the protection element 18 can be formed by the same method using the same material as the sealing member 13 that seals the LED 12. By covering the protection element 18 with the sealing member 13, it is possible to suppress the deterioration of the protection element 18.
- the sealing member 13 that covers the protection element 18 may not contain a phosphor, but the sealing member 13 that seals the protection element 18 and the sealing member 13 that seals the LED 12 are made of the same material. By doing, the sealing process of the protection element 18 and the sealing process of the LED 12 can be performed in the same process. Thereby, manufacturing cost can be reduced.
- the mounting substrate 11 of the light emitting device 10 is fastened and fixed to the base 20 by the fastening member 40 via the cover member 30.
- the screw shaft is connected to the first through hole 31 of the cover member 30 and the mounting substrate so that the screw head of the screw is locked and held by the cover member 30.
- 11 is inserted into the first through hole 11 a and a screw is screwed into the fixing hole 20 a of the base 20.
- the mounting substrate 11 is not directly screwed to the base 20 but is fastened and fixed to the base 20 via the cover member 30. That is, in the present embodiment, the mounting substrate 11 is fixed by surface fixing using the cover member 30 instead of point fixing by directly screwing.
- the load load with respect to the mounting substrate 11 can be made into a uniform load in a wider range, even when the resin substrate or the metal substrate is used as the mounting substrate 11, the mounting substrate 11 is warped. This can be suppressed. Therefore, since the fall of the adhesiveness of the mounting substrate 11 and the base 20 can be suppressed, it can suppress that heat dissipation falls.
- the mounting substrate 11 and the cover member 30 are brought into surface contact with each other, thereby avoiding a load load due to a single point concentration such as direct screwing. Thereby, it is possible to apply a load by dispersing the entire contact portion between the cover member 30 and the mounting substrate 11. Therefore, even when a ceramic substrate is used as the mounting substrate 11, the ceramic substrate can be prevented from being cracked or chipped.
- the LED 12 is mounted so as to surround the cover member 30.
- the cover member 30 is mounted in the area
- the LEDs 12 are arranged along the peripheral edge of the mounting substrate 11. By comprising in this way, since several LED12 can be distributed and arrange
- the LED 12 by disposing the LED 12 at the peripheral edge of the mounting substrate 11, the heat conduction path from the LED 12 to the outside of the mounting substrate 11 can be shortened, so that the heat dissipation can be further improved. Moreover, by arranging the LEDs 12 along the peripheral edge of the mounting substrate 11, the light emitting portion (LED 12, sealing member 13) is formed on the peripheral edge of the mounting substrate 11. As a result, there are no obstacles that reflect or absorb the light emitted from the light-emitting part in the outer area of the light-emitting part. can do.
- the cover member 30 is configured to be located outside the first through hole 31.
- a part of the cover member 30 exists outside the first through hole 31, so that a wide area of the main surface of the mounting substrate 11 in the inner area of the annular sealing member 13 is covered with the cover member 30. Can be covered.
- the light emitting part LED 12, sealing member 13
- the cover member 30 can be expanded to the peripheral part of the mounting substrate 11. Accordingly, since the cover member 30 can suppress the vicinity of the periphery of the mounting substrate 11, it is possible to further suppress the occurrence of warpage at the outer peripheral end portion of the mounting substrate 11 and the occurrence of floating at the central portion. .
- the 1st through-hole 31 of the cover member 30 and the 1st through-hole 11a of the mounting substrate 11 are also provided in the area
- the fastening member 40 inserted through the first through holes 31 and 11a is also disposed in the region inside the annular light emitting portion. Thereby, the light emitted from the light emitting part to the outside of the mounting substrate 11 is not affected by the fastening member 40. That is, there is no light shielding member that becomes a shadow of light in the outer region of the light emitting unit. Therefore, a uniform luminance distribution can be realized.
- the first through hole 31 of the cover member 30 is provided with a recess for accommodating the end portion (screw head) of the fastening member 40, so that the light absorption by the fastening member 40 is performed. Can be suppressed. Thereby, a more uniform luminance distribution can be realized and the light extraction efficiency can be improved.
- the fastening member 40 in the inner region of the light emitting unit, it is not necessary to dispose a fixing member for fixing the mounting substrate 11 outside the mounting substrate 11. That is, it is not necessary to use a pressing member that straddles the peripheral edge of the mounting substrate 11 and the base 20. Thereby, the light source for illumination provided with the said light-emitting device 10 can be made compact.
- the wiring 15 for electrically connecting the electric power supply part 14 and LED12 is provided in the area
- LED12, sealing member 13 a cyclic
- the cover member 30 most of the wiring 15 on the mounting substrate 11 is covered with the cover member 30. Thereby, it can suppress significantly that the light discharge
- the electric power supply part 14 and the protection element 18 are provided in the area
- the second through hole 32 of the cover member 30 for passing the lead wire 50 and the second through hole 11b of the mounting substrate 11 are inside the annular light emitting part (LED 12, sealing member 13). It is provided in the area.
- the illumination light source including the light emitting device 10 can be made more compact. it can.
- the sealing member 13 is preferably formed in a linear shape by collectively sealing the LEDs 12 arranged in a row in a ring shape. With this configuration, continuous line-like light emission can be obtained.
- the sealing member 13 is continuously formed without interruption. As a result, uniform line-shaped light emission continuous over the entire circumference of the mounting substrate 11 can be obtained. Therefore, a more uniform luminance distribution can be realized.
- FIG. 3 is a diagram showing a configuration around the first through hole of the mounting board in the illumination light source according to the first modification of the first embodiment of the present invention.
- FIG. 4A is a plan view of a light-emitting device according to Modification 2 of Embodiment 1 of the present invention
- FIG. 4B is a configuration around the first through hole of the mounting substrate in the illumination light source.
- the illumination light source shown in FIG. 3 is obtained by increasing the opening diameter of the first through hole 11a of the mounting substrate 11 with respect to the illumination light source shown in FIG. Specifically, when the opening diameter of the first through hole 11a of the mounting substrate 11 is ⁇ 1 and the opening diameter of the first through hole 31 of the cover member 30 is ⁇ 2, ⁇ 1 ⁇ 2 in FIG. 3, ⁇ 1> ⁇ 2. That is, the opening diameter ( ⁇ 1) of the first through hole 11a of the mounting substrate 11 is made larger than the opening diameter ( ⁇ 2) of the first through hole 31 of the cover member 30, and the first through hole 11a of the mounting substrate 11 is opened.
- the diameter ( ⁇ 1) is set to have a margin more than the shaft diameter of the screw.
- the mounting substrate 11 is thermally expanded or contracted depending on the environmental temperature.
- ⁇ 1> ⁇ 2 the constraint in the horizontal direction of the main surface of the mounting substrate 11 is relaxed in the vicinity of the first through hole 11a.
- a margin can be given to the expansion and contraction of the mounting substrate 11.
- chip of the mounting substrate 11 can be suppressed.
- the mounting substrate 11 is fastened and fixed with screws or the like, a large load is applied to the fixed portion due to expansion or contraction of the mounting substrate 11 due to thermal expansion or contraction, but the load can be reduced by satisfying ⁇ 1> ⁇ 2. it can. Also from this, it is possible to suppress the occurrence of cracks and chipping of the mounting substrate 11.
- the length of the opening of the first through hole 11a of the mounting substrate 11 in the direction (first direction) along the straight line connecting the center of the mounting substrate 11 and the center of the first through hole 11a is the first. You may comprise so that it may become a shape longer than the length of the 2nd direction which is a direction perpendicular
- the opening shape of the first through hole 11a of the mounting substrate 11 is an elliptical shape having a major axis in the first direction and a minor axis in the second direction. It can be.
- the first through hole 11 a of the mounting substrate 11 has an opening diameter (long axis length) of ⁇ 1 ′ in the first direction, and the first through hole 31 of the cover member 30. If the opening diameter is ⁇ 2, ⁇ 1 ′> ⁇ 2.
- the opening diameter (short axis length) of the first through hole 11 a of the mounting substrate 11 in the second direction may be equal to the opening diameter ( ⁇ 2) of the first through hole 31 of the cover member 30.
- the opening shape of the first through hole 11a of the mounting substrate 11 is not limited to an ellipse, but may be a rectangle, a racetrack shape, or the like.
- FIG. 5 is a perspective view showing a configuration around the light emitting device in the illumination light source according to Embodiment 2 of the present invention.
- 6A is a partial plan view showing a configuration around the light emitting device in the illumination light source
- FIG. 6B is a light emitting device in the illumination light source along the line AA ′ in FIG. FIG.
- the overall configuration of the illumination light source is not shown, but examples of the illumination light source include an LED lamp such as a bulb-type LED lamp (LED bulb).
- the difference between the illumination light source in the present embodiment and the illumination light source in the first embodiment is the configuration of the light emitting device 10A and the cover member 30A.
- the light emitting device 10A according to the present embodiment differs from the light emitting device 10 according to the first embodiment in the formation position of the second through hole 11b of the mounting substrate 11.
- the second through hole 11b is formed in the central portion of the mounting substrate 11.
- the lead wire 50 is pulled out from below the central portion of the mounting substrate 11 and connected to the power supply unit 14.
- the light emitting device 10A in the present embodiment is not provided with the protective element 18 and the sealing member 13 for sealing the protective element 18 and the sealing member 13 with respect to the first embodiment. It may be provided.
- the cover member 30A in the present embodiment is configured to have a convex shape upward, and as shown in FIG.
- the outer surface of is a frustoconical outer surface.
- the outer surface 34 of the frame portion (side wall portion) of the cover member 30A is an inclined surface.
- the height of the cover member 30 ⁇ / b> A is configured to be higher than the height of the sealing member 13.
- the cover member 30A can be configured using, for example, an insulating resin material such as PBT. In order to achieve high diffusion and high reflection, it is preferable that the surface of the cover member 30A is configured to be white.
- the cover member 30A is provided with three first through holes 31A, similar to the first through holes 31 of the first embodiment. Accordingly, the first through hole 31A is also configured to pass the fastening member 40 and to hold and hold the fastening member 40, as in the first embodiment. Note that the cover member 30A of the present embodiment is not provided with a configuration corresponding to the second through hole 32 of the first embodiment.
- the cover member 30A further includes a pressing portion 33 formed so as to protrude to the outside of the frame portion.
- the holding portion 33 is configured to hold the connector portion 51 of the lead wire 50 connected to the power supply portion 14.
- the cover member 30A configured as described above is mounted such that the pressing portion 33 presses the connector portion 51 and the opening of the frame portion is in surface contact with the main surface of the mounting substrate 11. Arranged on the substrate 11.
- the second through hole 11b of the mounting substrate 11 is covered with the cover member 30A so that it cannot be visually recognized from the outside.
- the height of the cover member 30A of the present embodiment is larger than the thickness of the cover member 30 of the first embodiment. Therefore, the length of the fastening member 40 of the present embodiment is longer than that of the first embodiment. Specifically, a screw with a long shaft is used.
- the same effect as in the first embodiment can be obtained.
- the mounting substrate 11 of the light emitting device 10A is fastened and fixed to the base 20 by the fastening member 40 via the cover member 30A.
- the LED 12 is mounted so as to surround the cover member 30 ⁇ / b> A, and the cover member 30 ⁇ / b> A is mounted in a region inside the LEDs 12 arranged in a ring shape.
- Embodiment 1 it can suppress that a light distribution characteristic deteriorates, generation
- the cover member 30 ⁇ / b> A has the opening of the cylindrical frame portion in surface contact with the main surface of the mounting substrate 11.
- the outer surface 34 of the frame portion of the cover member 30A is an inclined surface, and the opening area of the frame portion becomes smaller as the distance from the mounting substrate 11 increases.
- the second through hole 11b of the mounting substrate 11 is covered with the cover member 30A and is not visible from the outside.
- the cover member 30A since there is no lead wire 50 which is a partial shadow of the light of the light emitting part, a uniform luminance distribution can be realized.
- the light absorption by a mounting component can be suppressed by covering other mounting components with the cover member 30A.
- the connector portion 51 of the lead wire 50 is pressed by the pressing portion 33 of the cover member 30A.
- the power supply unit 14 is restored by the restoring force of the lead wire 50 due to bending. Even if there is a stress load on the connection portion between the lead wire 50 and the lead wire 50, the power supply portion 14 is detached from the mounting substrate 11 because the connector portion 51 is pressed by the pressing portion 33 of the cover member 30 ⁇ / b> A that is screwed. Or the lead wire 50 can be prevented from coming off from the power supply unit 14.
- the top surface portion of the cover member 30A is configured to be located outside the first through hole 31A.
- a part of the cover member 30A exists outside the first through hole 31A, so that a wide area of the main surface of the mounting substrate 11 in the inner area of the annular sealing member 13 is covered with the cover member 30A. Can be covered.
- the cover member 30A can suppress the vicinity of the periphery of the mounting substrate 11, the occurrence of warpage of the mounting substrate 11 can be further suppressed.
- a wider area of the main surface of the mounting substrate 11 can be covered with the cover member 30 ⁇ / b> A by configuring the cover member 30 ⁇ / b> A so that the skirt of the frame portion is expanded (the opening area is increased).
- the shape of the cover member 30A is a truncated cone shape, but is not limited thereto.
- a cover member 30 ⁇ / b> A ⁇ b> 1 configured such that the outer surface shape is an outer surface of a hemisphere may be used.
- a hollow cover portion 33 ⁇ / b> A ⁇ b> 2 that covers the entire connector portion 51 and the power supply portion 14 is provided on the cover member. Also good. 7 and 8 can be applied to other embodiments and other modifications.
- FIG. 9A is a perspective view showing a configuration around a light-emitting device in an illumination light source according to a modification of Embodiment 2 of the present invention.
- FIG. 9B is a cross-sectional view taken along line AA ′ of FIG. 9A.
- the cover member 30B in this modification has the same outer surface shape as the cover member 30A, but the inner surface shape is different from the cover member 30A.
- the entire shape of the cover member 30B is a bottomed cylindrical shape having a cylindrical frame portion having an opening and a top surface portion, and the cover member 30B is configured in a cap shape with a substantially constant thickness.
- the cover member 30 ⁇ / b> B has a frustoconical outer surface, and the opening area of the frame portion decreases as the distance from the mounting substrate 11 increases.
- the bottom surface (contact surface with the mounting substrate 11) of the cylindrical frame portion of the cover member 30B has an annular shape.
- the planar view shape (opening shape) of the frame part of the cover member 30B is substantially circular.
- the outer side surface 34 of the frame portion of the cover member 30B is an inclined surface as in the second embodiment. Further, the cover member 30 ⁇ / b> B is configured such that the height is higher than the height of the sealing member 13. Further, the cover member 30B is configured to cover the second through hole 11b so that the second through hole 11b of the mounting substrate 11 is not visually recognized from the outside.
- the cover member 30B is provided with three first through holes 31B, similar to the first through hole 31A of the second embodiment. Accordingly, the first through hole 31B is also configured to pass the fastening member 40 and to hold and hold the fastening member 40, as in the second embodiment.
- the same effect as in the second embodiment can be obtained.
- the mounting substrate 11 of the light emitting device 10A is fastened and fixed to the base 20 by the fastening member 40 via the cover member 30B.
- the LED 12 is mounted so as to surround the cover member 30B, and the cover member 30B is mounted in a region inside the LEDs 12 arranged in a ring shape.
- it can suppress that a light distribution characteristic deteriorates, generation
- the same effects as those of the second embodiment can be obtained with the same configuration as that of the second embodiment.
- the first through hole 31B is a cylindrical cover guide portion 31B1 formed so as to pass the shaft of the fastening member 40 (screw). It is configured.
- the cover guide portion 31B1 also functions as a guide for positioning the cover member 30B and the mounting substrate 11. That is, as shown in FIG. 9B, the end portion on the mounting board 11 side of the cover guide portion 31B1 is configured to be accommodated in the first through hole 11a of the mounting board 11, and the cover member 30B is attached to the mounting board 11.
- the cover member 30 ⁇ / b> B is disposed so that the end portion on the mounting substrate 11 side of the cover guide portion 31 ⁇ / b> B ⁇ b> 1 is positioned in the first through hole 11 a.
- the opening diameter of the cover guide portion 31B1 is P and the opening diameter of the first through hole 11a of the mounting substrate 11 is Q
- Q> P It is configured. That is, a gap is provided between the outer surface of the end portion of the cover guide portion 31B1 on the mounting substrate 11 side and the inner surface of the first through hole 11a. Thereby, even if the mounting substrate 11 is thermally expanded, the mounting substrate 11 can be prevented from coming into contact with the cover guide portion 31B1. Therefore, it is preferable that the gap be equal to or longer than the length corresponding to the deviation due to the thermal expansion of the mounting substrate 11.
- the cover guide portion 31B1 when the cover guide portion 31B1 is inserted into the first through hole 11a and the cover member 30B is placed on the mounting substrate 11, the bottom surface of the end portion of the cover guide portion 31B1 on the mounting substrate 11 side ( A gap having a distance R is provided between the lower surface and the surface of the base 20.
- a gap having a distance R is provided between the lower surface and the surface of the base 20.
- the cover member 30B is slightly deformed, and a desired load can be applied to the entire bottom surface of the frame portion of the cover member 30B (contact surface with the mounting substrate 11), and the mounting substrate 11 is fixed to the base 20 by pressure contact. Is done.
- the screw tightening force can be indirectly applied to the mounting substrate 11, and the excessive screw tightening force can be absorbed by the cover member 30B. Therefore, the chipping and cracking of the mounting substrate 11 can be further suppressed.
- FIG. 10A is a perspective view showing the configuration around the light emitting device in the illumination light source according to Embodiment 3 of the present invention.
- 10B is a cross-sectional view taken along line B1-B1 ′ of FIG. 10A.
- the overall configuration of the illumination light source is not shown, but examples of the illumination light source include an LED lamp such as a bulb-type LED lamp (LED bulb).
- LED lamp such as a bulb-type LED lamp (LED bulb).
- the difference of the illumination light source in the present embodiment from the illumination light source in the modification of the second embodiment shown in FIGS. 9A and 9B is the configuration of the cover member 30C.
- the cover member 30C in the present embodiment is provided such that the three first through holes 31C overlap with the cylindrical frame portion as shown in FIG. 10A.
- the cover member 30C is tightened with a screw (tightening member 40), as shown in FIG. 10B, the position of the screw head of the screw in the first through hole 31C is a modification of the second embodiment. The position is lower than in the example.
- the first through hole 31C is configured to pass the fastening member 40 and to hold and hold the fastening member 40, as in the modification of the second embodiment.
- the three first through holes 31C are provided at equal intervals in the circumferential direction of the frame portion.
- the cover member 30C is configured such that when the cover member 30C is tightened by the tightening member 40, a part of the frame portion of the cover member 30C spreads outward. Specifically, as shown in a region X surrounded by a one-dot chain line in FIG. 10A, the periphery of the first through hole 31C of the cover member 30C is cut upward from the lower end of the frame portion of the cover member 30C. A notch 34a is provided.
- the cut portion 34a is, for example, a cut portion (cut) formed linearly.
- the notch 34a is provided for each first through hole 31C, and is provided as a pair of left and right first through holes 31C so as to sandwich the first through hole 31C.
- a gap is provided between the lower surface of the frame portion of the cover member 30C and the surface of the mounting substrate 11 between the pair of cut portions 34a.
- the mounting substrate 11 is in surface contact at a portion other than the portion between the pair of cut portions 34a.
- the contact portion of the cover member 30C with the mounting substrate 11 is a protruding portion and protrudes below the peripheral portion of the first through hole 31C. It is configured.
- the same effects as those of the modification of the second embodiment can be obtained.
- the mounting substrate 11 of the light emitting device 10A is fastened and fixed to the base 20 by the fastening member 40 via the cover member 30C.
- the LED 12 is mounted so as to surround the cover member 30C, and the cover member 30C is mounted in a region inside the LED 12 arranged in a ring shape.
- the same effects as those of the modification of the second embodiment can be obtained with the same configuration as that of the modification of the second embodiment.
- FIG. 11 is a diagram for explaining the action of the cover member in the illumination light source according to the third embodiment of the present invention, and (a) shows a state before tightening (before screwing) by the tightening member. (B) has shown the state after the fastening by a fastening member (after screwing). 11A and 11B show cross sections of the cover member (protruding portion) and the mounting board taken along line B2-B2 'of FIG. 10A.
- the outer surface 34 of the frame portion of the cover member 30C is in a flat state without being bent, and is out of the frame portions of the cover member 30C.
- the bottom surface of the projecting portion projecting downward is in contact with the mounting substrate 11.
- the lower surface of the portion other than the protruding portion (the portion between the pair of cut portions 34a) in the frame portion of the cover member 30C is in contact with the mounting substrate 11.
- the mounting substrate 11 there is a gap with the mounting substrate 11.
- the cover member 30C mainly holds the mounting substrate 11 by a projecting portion (a portion other than the portion between the pair of cut portions 34a) that projects downward in the frame portion of the cover member 30C.
- a large load is applied to the mounting substrate 11 by a portion other than the protruding portion of the frame portion of the cover member 30C (a portion between the pair of cut portions 34a). It has not been.
- stress concentration due to the tightening portion (the portion of the first through hole 31C) of the tightening member 40 can be alleviated, so that the chipping or cracking of the mounting substrate 11 can be further suppressed.
- the first through hole 31C in the present embodiment is configured as a cover guide portion 31C1 in the same manner as the first through hole 31B in the modification of the second embodiment shown in FIG. 9B. Yes.
- the length of the cover guide portion 31C1 is shorter than that in FIG. 9B.
- the cover guide portion 31C1 in the present embodiment also functions as a guide for positioning the cover member 30C and the mounting board 11 in the same manner as the cover guide portion 31B1 shown in FIG. 9B.
- the present embodiment is also configured to satisfy Q> P.
- a protruding portion (a pair of cut portions) protruding downward from the frame portion of the cover member 30C. 34a is in contact with the mounting substrate 11, and between the bottom surface (lower surface) of the end of the cover guide portion 31C1 on the mounting substrate 11 side and the surface of the base 20. Is provided with a gap of a distance R, and a distance S between the bottom surface of a portion (a portion between the pair of cut portions 34a) other than the protruding portion of the frame portion of the cover member 30C and the mounting substrate 11. The gap is provided.
- the cut portion 34a is provided corresponding to the first through hole 31C, but is not limited thereto. Further, the frame portion of the cover member 30C can be more easily deformed by further increasing the number of the cut portions 34a.
- the cut portion 34a is notched in a straight line, but when tightened by the tightening member 40, the projecting portion projecting downward in the frame portion of the cover member 30C is deformed as desired. If it is such a configuration, the cut shape is not limited to this. Furthermore, if it is the structure which the protrusion part which protruded below among the frame parts of the cover member 30C deform
- FIG. 12 is a perspective view showing a configuration around the light emitting device in the illumination light source according to Embodiment 4 of the present invention.
- FIG. 13 is a plan view showing a configuration around the light emitting device in the illumination light source.
- the overall configuration of the illumination light source is not shown, but examples of the illumination light source include an LED lamp such as a bulb-type LED lamp (LED bulb).
- the difference of the illumination light source in the present embodiment from the illumination light source in the second embodiment is the configuration of the cover member 30D.
- the cover member 30 ⁇ / b> D in the present embodiment is configured to have an upwardly convex shape, similar to the cover member 30 ⁇ / b> A of the second embodiment. This is different from the cover member 30A of the second embodiment.
- the entire shape of the cover member 30D is a bottomed rectangular tube shape having a rectangular tube-shaped frame portion having an opening and a top surface portion, and the cover member 30D has a cap shape with a substantially constant thickness. It is configured.
- the cover member 30 ⁇ / b> D has a truncated pyramid-shaped outer surface, and the opening area of the frame portion decreases as the distance from the mounting substrate 11 increases.
- the bottom surface (contact surface with the mounting substrate 11) of the cylindrical frame portion of the cover member 30D has a rectangular shape, and is a square in the present embodiment.
- the outer side surface 34 of the frame portion of the cover member 30D is an inclined surface as in the second embodiment. Further, the cover member 30 ⁇ / b> D is configured such that the height is higher than the height of the sealing member 13.
- the cover member 30D is configured to cover the second through hole 11b so that the second through hole 11b of the mounting substrate 11 is not visually recognized from the outside. Further, the cover member 30 ⁇ / b> D is configured to cover the power supply unit 14 and the protection element 18.
- the cover member 30D in the present embodiment is configured such that the edge of the opening of the frame portion is positioned in the vicinity of the light emitting portion in the inner region of the light emitting portion (LED 12, sealing member 13). That is, as shown in FIG. 13, the opening shape of the frame portion of the cover member 30D and the annular shape of the light emitting portion are substantially the same shape (rectangular shape in the present embodiment), and the frame portion of the cover member 30D The gap between the edge on the light emitting part side in the opening and the light emitting part is slight. Accordingly, the cover member 30D can cover almost the entire mounting substrate 11 in the inner region of the light emitting unit (LED 12, sealing member 13).
- the cover member 30D configured as described above can be configured using an insulating resin material such as PBT, as in the second embodiment. In order to achieve high diffusion and high reflection, it is preferable that the surface of the cover member 30D is configured to be white.
- the cover member 30D is provided with three first through holes 31D, similar to the first through hole 31A of the second embodiment. Accordingly, the first through hole 31D is also configured to pass the fastening member 40 and to hold and hold the fastening member 40, as in the second embodiment.
- the same effect as in the second embodiment can be obtained.
- the mounting substrate 11 of the light emitting device 10A is fastened and fixed to the base 20 by the fastening member 40 via the cover member 30D.
- the LED 12 is mounted so as to surround the cover member 30 ⁇ / b> D, and the cover member 30 ⁇ / b> D is mounted in a region inside the LED 12 arranged in a ring shape.
- Embodiment 2 it can suppress that a light distribution characteristic deteriorates, generation
- the same effects as those of the second embodiment can be obtained with the same configuration as that of the second embodiment.
- the cover member 30D covers almost the entire inner region of the light emitting section (LED 12, sealing member 13).
- the conductive member provided in the inner region of the light emitting unit is accommodated by the cover member 30D.
- Examples of such a conductive member include the power supply unit 14, the wiring 15, the protective element 18, the lead wire 50, and the like. It becomes. Thereby, since it can suppress that the light emitted from a light emission part is reflected or absorbed with the electrically-conductive member provided in the internal area
- the exposed portion of the wiring 15 may be coated with an insulating film such as a glass coat film as a countermeasure against insulation.
- the light emitting portion (LED12, sealing member) is covered by the cover member 30D. 13) Since almost the entire inner region is covered, such a coating process is not necessary.
- the sealing process for sealing the sealing member 13 is performed on the protective element 18 in order to prevent the protective element 18 from being deteriorated. Since it is covered with the cover member 30D, such a sealing process is not necessary.
- the coating process and the sealing process are unnecessary, so that material saving and process simplification can be achieved, and the manufacturing cost can be reduced.
- FIG. 14 is a perspective view showing the configuration around the light emitting device in the illumination light source according to Embodiment 5 of the present invention.
- 15A is a plan view showing a configuration around the light emitting device
- FIG. 15B is a cross-sectional view taken along the line CC ′ of FIGS. 14 and 15A.
- the overall configuration of the illumination light source is not shown, but examples of the illumination light source include an LED lamp such as a bulb-type LED lamp (LED bulb).
- LED lamp such as a bulb-type LED lamp (LED bulb).
- the difference of the illumination light source in the present embodiment from the illumination light source in the fourth embodiment is the configuration of the cover member 30E. Specifically, as shown in FIGS. 14, 15A and 15B, in the cover member 30E in the present embodiment, only one first through hole 31E is formed at the center of the top surface portion of the cover member 30E. Yes. In the present embodiment, a pressing portion 33E is provided inside the frame portion of the cover member 30E.
- the first through hole 31E is configured to allow the fastening member 40 to pass therethrough and to latch and hold the fastening member 40.
- the 1st through-hole 31E is comprised as the cylindrical cover guide part 31E1 similarly to the 1st through-hole 31B of the modification of Embodiment 2 shown to FIG. 9B.
- the pressing portion 33E is configured to press the connector portion 51 of the lead wire 50 connected to the power supply portion 14 by surface contact.
- the power supply Corresponding to the position of the part 14, it is provided in the corner
- the pressing portion 33E is a thick portion, and can be configured, for example, by making a part of the cover member 30E thick.
- the same effect as in the third embodiment can be obtained.
- the mounting substrate 11 of the light emitting device 10A is fastened and fixed to the base 20 by the fastening member 40 via the cover member 30E.
- the LED 12 is mounted so as to surround the cover member 30E, and the cover member 30E is mounted in a region inside the LEDs 12 arranged in a ring shape.
- the same effects as those of the third embodiment can be obtained with the same configuration as that of the third embodiment.
- the connector portion 51 of the lead wire 50 is pressed by the pressing portion 33E of the cover member 30E.
- FIG. 16A is a plan view showing a configuration around a light-emitting device in an illumination light source according to Modification 1 of Embodiment 5 of the present invention.
- 16B is a cross-sectional view taken along line C-C ′ of FIG. 16A.
- the illumination light source in this modification is different from the illumination light source in the fifth embodiment shown in FIGS. 15A and 15B in the configuration of the pressing portion 33E1 of the cover member 30E1.
- the pressing portion 33E1 in the present modification is formed only on the upper portion of the connector portion 51 of the lead wire 50 as shown in FIG. 16A.
- the region where the pressing portion 33E1 is formed in the cover member 30E1 is not particularly limited.
- FIG. 17A is a plan view showing a configuration around a light-emitting device in an illumination light source according to Modification 2 of Embodiment 5 of the present invention.
- FIG. 17B is a cross-sectional view taken along line D-D ′ of FIG. 17A.
- the illumination light source in this modification is different from the illumination light source in the fifth embodiment shown in FIGS. 15A and 15B in the configuration of the pressing portion 33E2 of the cover member 30E2.
- the pressing portion 33E2 in the present modification is formed in a fin shape, and is configured to partially press the upper portion of the connector portion 51 of the lead wire 50. ing.
- the electric power supply part 14 remove
- the shape of the pressing portion 33E2 is not particularly limited as long as the pressing portion 33E2 is configured to press at least a part of the connector portion 51 of the lead wire 50.
- FIG. 18 is a perspective view showing the configuration around the light emitting device in the illumination light source according to Embodiment 6 of the present invention.
- the overall configuration of the illumination light source is not shown, but examples of the illumination light source include an LED lamp such as a bulb-type LED lamp (LED bulb).
- LED lamp such as a bulb-type LED lamp (LED bulb).
- the difference of the illumination light source in the present embodiment from the illumination light source in the fourth embodiment shown in FIGS. 12 and 13 is the configuration of the cover member 30F. Specifically, as shown in FIG. 18, the cover member 30F in the present embodiment is provided so that the first through hole 31F overlaps the rectangular tube-shaped frame portion.
- the first through hole 31F is provided on each side of the frame portion of the cover member 30F having a rectangular shape in plan view.
- the cover member 30F is tightened with a screw (tightening member 40)
- the position of the screw head of the screw in the first through hole 31F is lower than that in the fourth embodiment, as shown in FIG.
- the 1st through-hole 31F is comprised so that the clamping member 40 may be latched and hold
- the same effect as in the fourth embodiment can be obtained.
- the mounting substrate 11 of the light emitting device 10A is fastened and fixed to the base 20 by the fastening member 40 via the cover member 30F.
- the LED 12 is mounted so as to surround the cover member 30F, and the cover member 30F is mounted in a region inside the LEDs 12 arranged in a ring shape.
- FIG. 19 is a perspective view showing the configuration around the light emitting device in the illumination light source according to Embodiment 7 of the present invention.
- 20A is a cross-sectional view taken along line E1-E1 ′ of FIG. 19
- FIG. 20B is a cross-sectional view taken along line E2-E2 ′ of FIG. 20A and 20B, the second through hole 11b of the mounting substrate 11 is not shown.
- the overall configuration of the illumination light source is not shown, but examples of the illumination light source include an LED lamp such as a bulb-type LED lamp (LED bulb).
- LED lamp such as a bulb-type LED lamp (LED bulb).
- the illumination light source in the present embodiment is different from the illumination light source in Embodiment 3 shown in FIGS. 10A and 10B in the configuration of the cover member 30G.
- the cover member 30G in the present embodiment has a plurality of convex portions (bosses) 35 as shown in FIGS. 19, 20A and 20B.
- the convex portion 35 functions as a stopper for preventing the tightening member 40 from being overtightened, and is formed so as to protrude from the inner surface of the top surface portion of the cover member 30G toward the mounting substrate 11 as shown in FIG. 20A. Yes.
- four substantially cylindrical convex portions 35 are provided.
- the convex portion 35 can be formed as a part of the cover member 30G.
- the cover member 30G in the present embodiment is formed with three first through holes 31G and a cut portion 34Ga formed in the outer surface 34G.
- the first through hole 31G and the cut portion 34Ga have the same configuration as the first through hole 31C and the cut portion 34a in the third embodiment.
- the same effect as in the third embodiment can be obtained.
- the mounting substrate 11 of the light emitting device 10A is fastened and fixed to the base 20 by the fastening member 40 via the cover member 30G.
- the LED 12 is mounted so as to surround the cover member 30C, and the cover member 30G is mounted in a region inside the LEDs 12 arranged in a ring shape.
- the same effects as those of the third embodiment can be obtained with the same configuration as that of the third embodiment.
- the convex portion 35 is provided on the cover member 30G.
- FIG. 21A is an external perspective view of a lighting apparatus according to Embodiment 8 of the present invention.
- FIG. 21B is a cross-sectional view of the lighting apparatus according to Embodiment 8 of the present invention, taken along line AA ′ in FIG. 21A.
- the lighting device 100 is, for example, a downlight that illuminates light downward (eg, in a hallway or a wall) by being embedded in a ceiling of a house or the like.
- the lighting device 10A includes the light emitting device 10A according to the second embodiment shown in FIGS. 5 and 6, a base 20, a cover member 30A, and a fastening member 40.
- the illumination device 100 includes a lens unit 130, a power supply device 140, a terminal block 150, a mounting plate 160, and a fixing spring 170.
- the base 20 in the present embodiment is a main body of the lighting device, and is a mounting base for mounting the light emitting device 10 and a heat sink that dissipates heat generated in the light emitting device 10A.
- the base 20 can be configured using a metal material, and can be made of, for example, aluminum die casting.
- a plurality of heat radiation fins 121 projecting upward are provided on the upper portion (ceiling side portion) of the base 20. Thereby, the heat which generate
- the base 20 has an attachment portion 122 for attaching and fixing the light emitting device 10A.
- the light emitting device 10 ⁇ / b> A is placed on the surface of the attachment portion 122.
- the mounting portion 122 is provided with a screw hole 122a.
- the light emitting device 10A is fastened and fixed to the mounting portion 122 by the fastening member 40 (screw) through the cover member 30A.
- Screw hole 122a corresponds to fixing hole 20a in the first embodiment.
- the lens unit 130 is made of a translucent member, and can be formed using, for example, a resin material such as PMMA (acrylic) or polycarbonate, or an insulating transparent material such as a glass material.
- the lens unit 130 is provided on the light emitting side of the light emitting device 10A so as to cover the light emitting device 10A.
- FIG. 22 is a diagram showing a configuration of a lens unit in the illumination device according to Embodiment 8 of the present invention.
- the lens portion 130 is formed in a disc shape, and the outer surface shape of the lens portion 130 is processed into a predetermined curved shape so as to have a predetermined lens action.
- the outer surface shape of the lens unit 130 is configured to be curved so as to protrude outward at a position corresponding to the sealing member 13 of the light emitting device 10A in a cross-sectional view, and In plan view, it is configured in a donut shape.
- the lens unit 130 by providing the lens unit 130 in this way, the light emitted from the sealing member 13 of the light emitting device 10A is converged and diverged in a predetermined direction by the lens action of the lens unit 130 and emitted.
- the lens unit 130 also functions as a cover for the lighting device 100 and protects the light emitting device 10A.
- the lens unit 130 may be provided with a light diffusion function.
- the outer surface of the lens unit 130 is subjected to a texture treatment to form irregularities on the surface, a light diffusion film containing a light diffusion material such as silica is formed, or a light diffusion material is mixed inside the lens unit 130 You can let them do.
- the entire surface of the lens unit 130 is embossed, and light is leaked.
- the lens portion 130 is provided with a through hole 131 corresponding to the first through hole 11a of the mounting substrate 11 of the light emitting device 10A. Accordingly, the fastening member 40 is inserted into the through hole 131 of the lens unit 130, the first through hole 31A of the cover member 30A, and the first through hole 11a of the mounting substrate 11, and the fastening member 40 is inserted into the screw hole 122a of the mounting unit 122.
- the lens part 130 and the light emitting device 10 ⁇ / b> A can be fixed to the base 20.
- the power supply device (power supply circuit) 140 receives power from a commercial power supply (for example, AC 100V) and generates power for causing the light emitting device 10A to emit light. Further, the terminal block 150 relays between the power supply device 140 and the light emitting device 10A, and supplies power from the power supply device 140 to the light emitting device 10A.
- the power supply device 140 is attached and fixed to the attachment plate 160.
- a fixing spring (mounting spring) 170 is provided on the outer peripheral wall of the base 20.
- the main body 120 is attached and fixed to the ceiling by the fixing spring 170.
- the fixing spring 170 is configured by, for example, bending one end portion of a rectangular plate-shaped stainless steel plate in the longitudinal direction into a V shape, and a plurality of fixing springs 170 are spaced apart from each other along the circumferential direction of the main body 120. (For example, three) are provided.
- the mounting substrate 11 of the light emitting device 10A is fastened and fixed to the base 20 by the fastening member 40 via the cover member 30A.
- the LED 12 is mounted so as to surround the cover member 30 ⁇ / b> A, and the cover member 30 ⁇ / b> A is mounted in a region inside the LEDs 12 arranged in a ring shape.
- Embodiment 2 it can suppress that a light distribution characteristic deteriorates, generation
- the form of the second embodiment is applied, but forms other than the second embodiment such as the first embodiment may be applied.
- the lens unit 130 may be used as a cover member in the present invention without using the cover member 30A.
- the cover member may have a lens function.
- the cover member 30A1 can be configured by integrating the lens portion 130 and the cover member 30A in FIG. 21B.
- Embodiment 9 Next, an illumination light source according to Embodiment 9 of the present invention will be described.
- a bulb-type LED lamp LED bulb
- an illumination light source LED bulb
- FIG. 23 is a cross-sectional view of a light bulb shaped lamp according to Embodiment 9 of the present invention.
- the illumination light source in the present embodiment corresponds to the illumination light source according to Embodiment 2 shown in FIGS. 5 and 6 and includes a light emitting device 10A and a cover member 30A.
- a light bulb shaped lamp 200 is a light bulb shaped LED lamp that is a substitute for a light bulb shaped fluorescent lamp or an incandescent light bulb, and includes a light emitting device (LED module) 10A that is a light source.
- the base 220 on which the light emitting device 10A is mounted, the cover member 30A, and the fastening member 40 are provided.
- the light bulb shaped lamp 200 includes a globe 210 that covers the light emitting device 10A, a circuit unit 230 that causes the light emitting device 10A to emit light, a circuit holder 240 that houses the circuit unit 230, and a housing 250 that covers the circuit holder 240.
- a base 260 electrically connected to the circuit unit 230.
- the bulb-shaped lamp 200 has an envelope composed of a globe 210, a casing 250, and a base 260.
- the globe 210 is a hemispherical translucent cover for radiating light emitted from the light emitting device 10A to the outside of the lamp.
- the globe 210 can be used with a glass bulb made of glass or a resin bulb such as acrylic (PMMA) or polycarbonate (PC).
- the base 220 is a light source mounting member for mounting and fixing the light emitting device 10A.
- the light emitting device 10A arranged on the base 220 is fastened and fixed to the base 220 by the fastening member 40 (for example, a screw) using the cover member 30A as in the second embodiment.
- the base 220 is fixed in a state of being fitted into the opening of the housing 250.
- the base 220 may be a metal base made of a metal material such as aluminum. Thereby, the heat generated in the light emitting device 10A can be efficiently conducted to the base 220.
- the base 220 may be a resin base made of resin.
- the cover member 30A is provided so as to cover the inner region of the sealing member 13 of the light emitting device 10A. Moreover, the light from the sealing member 13 can be reflected by giving a reflecting function to the surface of the cover member 30A, and a light bulb shaped lamp with a wide light distribution angle can also be realized.
- the circuit unit 230 is a lighting circuit (power supply circuit) that supplies predetermined power to the light emitting device 10A in order to light (emit) the LED 12 of the light emitting device 10A.
- the circuit unit 230 includes a circuit board and a plurality of electronic components mounted on the circuit board. The circuit unit 230 is fixed to the circuit holder 240.
- the circuit holder 240 is an insulating case for housing the circuit unit 230 and is housed in the housing 250 and the base 260.
- the circuit holder 240 can be formed of an insulating material such as resin, for example.
- the housing 250 is disposed between the globe 210 and the base 260.
- the casing 250 in the present embodiment is a case that constitutes an outer member and is open at both ends.
- the housing 250 can be made of a metal material such as aluminum.
- the base 260 is a power receiving unit for receiving AC power through two contact points, and is attached to a socket of a lighting fixture, for example. In this case, when the illumination light source 1 is turned on, the base 260 receives power from the socket of the lighting fixture. Further, the power received by the base 260 is input to the power input unit of the circuit unit 230.
- the base 260 includes a shell portion having a substantially cylindrical shape and an outer peripheral surface being a male screw, and an eyelet portion attached to the shell portion via an insulating portion.
- the type of the base 260 is not particularly limited.
- a screw-type Edison type (E type) base can be used, and examples thereof include an E26 base, an E17 base, and an E16 base.
- the same effects as those of the second embodiment can be obtained.
- the mounting substrate 11 of the light emitting device 10A is fastened and fixed to the base 220 by the fastening member 40 via the cover member 30A.
- the LED 12 is mounted so as to surround the cover member 30 ⁇ / b> A, and the cover member 30 ⁇ / b> A is mounted in a region inside the LEDs 12 arranged in a ring shape.
- Embodiment 2 it can suppress that a light distribution characteristic deteriorates, generation
- the form of the second embodiment is applied, but forms other than the second embodiment such as the first embodiment may be applied.
- the lens portion as in the seventh embodiment may be used as the cover member without using the cover member 30A.
- the lighting device can be realized by mounting the light bulb shaped lamp 200 according to the present embodiment on a lighting fixture having a predetermined socket.
- Embodiment 10 Next, an illumination light source according to Embodiment 10 of the present invention will be described.
- a flat LED lamp will be described as an example of a light source for illumination.
- FIG. 24A is an external perspective view of an LED lamp according to Embodiment 10 of the present invention.
- FIG. 24B is a cross-sectional view of the LED lamp according to Embodiment 10 of the present invention.
- the LED lamp 300 is an LED lamp having a disk shape or a flat shape as a whole, and has a base of a predetermined standard (for example, a GH76p type base).
- the illumination light source in the present embodiment corresponds to the illumination light source according to Embodiment 2 shown in FIGS. 5 and 6 and includes a light emitting device 10A and a cover member 30A.
- the LED lamp 300 includes a light emitting device 10A, a base 20 attached to a lighting fixture (not shown), a case 320 connected to the base 20, a circuit board 330, a reflecting mirror 340, and a light transmitting property. And a cover 350.
- the sealing member 13 of the light emitting device 10A is formed in an annular shape.
- the base 20 is a support base to which the light emitting device 10A is attached, and can be made of a metal material such as aluminum. Moreover, the base 20 is a member connected to a lighting fixture. Specifically, for example, a base structure of GH76p type is formed on the upper part of the base 20, and is attached and fixed to a lighting fixture.
- the housing 320 is a flat and cylindrical housing that surrounds the light irradiation side of the LED lamp 300. Inside the housing 320, the light emitting device 10A, the circuit board 330, and the reflecting mirror 340 are arranged.
- the housing 320 can be made of an insulating resin such as PBT, for example.
- the circuit board 330 is provided with a circuit for causing the LED 12 of the light emitting device 10A to emit light.
- the circuit board 330 is a disk-shaped (doughnut-shaped) board in which a circular opening is formed, and is arranged inside the housing 320 and outside the reflecting mirror 340.
- the reflecting mirror 340 is disposed on the light emitting side of the light emitting device 10A, and is configured to reflect and emit the light emitted from the light emitting device 10A to the outside.
- the reflecting mirror 340 can be made of an insulating white synthetic resin material, and for example, polycarbonate can be used.
- a reflective film may be coated on the inner surface of the reflecting mirror 340.
- the translucent cover 350 is a flat plate member disposed in the opening of the housing 320 in order to protect the member disposed in the housing 320.
- the translucent cover 350 is made of a synthetic resin material having a high light transmittance such as polycarbonate so as to transmit light from the light emitting device 10A. Note that a paint for promoting light diffusibility may be applied to the inner surface of the translucent cover 350.
- the mounting substrate 11 of the light emitting device 10A is fastened and fixed to the base 20 by the fastening member 40 via the cover member 30A.
- the LED 12 is mounted so as to surround the cover member 30 ⁇ / b> A, and the cover member 30 ⁇ / b> A is mounted in a region inside the LEDs 12 arranged in a ring shape.
- Embodiment 2 it can suppress that a light distribution characteristic deteriorates, generation
- the lens portion as in the seventh embodiment may be used as the cover member without using the cover member 30A.
- a lighting device can be realized by mounting the LED lamp 300 according to the present embodiment on a lighting fixture having a predetermined socket.
- FIG. 25A is a plan view showing a configuration around the light emitting device in the illumination light source according to the first modification of the embodiment of the present invention, and FIG. It is sectional drawing of the periphery of the light-emitting device in the light source for the illumination in A 'line.
- the illumination light source in this modification is different from the illumination light source in the second embodiment shown in FIG. 2 in the configuration of the cover member 30H.
- the cover member 30 ⁇ / b> H in the present modification is a translucent member that transmits light emitted from the sealing member 13, and is made of a transparent resin material such as acrylic or polycarbonate.
- the first surface 30Ha which is the upper surface of the cover member 30H, is roughened by embossing or the like.
- the second surface 30Hb which is the lower surface of the cover member 30H, is a smooth surface (total reflection surface). Since the adhesion between the mounting board 11 and the cover member 30H is low, an air layer is mostly interposed between the mounting board 11 and the cover member 30H.
- the light traveling from the sealing member 13 to the internal region of the mounting substrate 11 enters the cover member 30H from the side surface of the cover member 30H. .
- a part of the light incident on the cover member 30H is diffused on the first surface 30Ha and emitted to the outside of the cover member 30H.
- the light reflected by the first surface 30Ha is totally reflected by the second surface 30Hb and reaches the first surface 30Ha again, and a part of the light is diffused by the first surface 30Ha and emitted to the outside.
- the other part is reflected by the first surface 30Ha.
- the light incident on the cover member 30H is guided inside the cover member 30H, diffused on the first surface 30Ha, and emitted from the cover member 30H to the outside.
- the surface emitting light-emitting device LED module
- the light-transmitting property can be achieved even if the distance between the light-transmitting cover 350 (including the diffusing material) shown in FIG.
- the brightness distribution of the cover 350 can be made uniform. Thereby, the magnitude
- the luminance distribution of the globe 210 can be made uniform even if the distance between the globe 210 and the optical device is reduced. Thereby, the magnitude
- FIG. 26 (a) is a plan view showing a configuration around the light emitting device in the illumination light source according to the second modification of the embodiment of the present invention
- FIG. 26 (b) is a cross-sectional view taken along line A- of FIG. It is sectional drawing of the periphery of the light-emitting device in the light source for the illumination in A 'line.
- the illumination light source in this modification is different from the illumination light source in Modification 1 shown in FIG. 25 in the configuration of the cover member 30I.
- the first surface 30Ia that is the upper surface is a smooth surface (total reflection surface), and the second surface 30Ib that is the lower surface is a white dot printing surface.
- the cover member 30I is a translucent member that transmits light emitted from the sealing member 13, and is made of a transparent resin material such as acrylic or polycarbonate.
- the light traveling from the sealing member 13 to the internal region of the mounting substrate 11 enters the inside of the cover member 30I from the side surface of the cover member 30I. .
- a part of the light incident on the cover member 30I is totally reflected by the first surface 30Ia and proceeds to the second surface 30Ib.
- the incident component on the white printed dots is diffusely reflected by the second surface 30Ib and radiated toward the first surface 30Ia, and a part of the light component reaches the cover member from the first surface 30Ia. Released to the outside of 30I.
- Light components other than those described above are reflected by the first surface 30Ia and the second surface 30Ib, and are emitted from the other first surface 30Ia to the outside of the cover member 30I while being guided in the cover member 30I.
- the light incident on the cover member 30I is guided inside the cover member 30I, and the light diffused on the second surface 30Ib is emitted from the first surface 30Ia to the outside of the cover member 30I. .
- the surface emitting light-emitting device LED module
- Modification 1 when this modification is applied to the illumination light source shown in FIGS. 24A and 24B, the distance between the light-transmitting cover 350 (including the diffusing material) shown in FIG. Even if the size is reduced, the luminance distribution of the translucent cover 350 can be made uniform. Similarly, when the present modification is applied to the illumination light source shown in FIG. 23, the luminance distribution can be made uniform. Thereby, the magnitude
- FIG. 27A is a diagram showing a configuration of a cover member in an illumination light source according to the second modification of the embodiment of the present invention.
- the second surface 30Ib can be used as a white dot printing surface by uniformly applying a plurality of white dots 36 to the second surface 30Ib (lower surface) of the cover member 30I.
- the white dots 36 are not uniform and may have a density distribution according to the region.
- the density of the white dots 36 can be distributed from coarse to dense from the end face of the cover member 30I toward the center. That is, the density of the white dots 36 can be increased from the peripheral region of the cover member 30I toward the central region. With this configuration, light emission on the first surface 30Ia (upper surface) of the cover member 30I can be made more uniform.
- the concept of the density distribution shown in FIGS. 27A and 27B is also applied to the case of the surface roughness of the first surface 30Ha in the first modification of FIG. 25 and the surface roughness of the first surface 30Ja in the following third modification. it can.
- the cover member 30H shown in FIG. 25 by increasing the roughness density toward the center, the luminance distribution can be made uniform even when the light guide component decreases toward the center.
- FIG. 28 (a) is a perspective view showing a configuration around a light emitting device in an illumination light source according to the third modification of the embodiment of the present invention
- FIG. 28 (b) is a cross-sectional view of FIG. It is sectional drawing of the periphery of the light-emitting device in the light source for the illumination in C 'line.
- the difference of the illumination light source in this modification from the illumination light source shown in FIG. 12 is the configuration of the cover member 30J.
- the cover member 30J in the present modification is a translucent member that transmits the light emitted from the sealing member 13 as in the first and second modifications, and is made of a transparent resin material such as acrylic or polycarbonate. It is configured.
- the first surface 30Ja which is the upper surface of the cover member 30J, is roughened by embossing or the like.
- the second surface 30Jb which is the inner surface of the cover member 30J, is a tapered surface (total reflection surface) at the periphery of the cover member 30J, and is a smooth surface (total reflection surface) otherwise.
- the outer peripheral surface of the cover member 30 ⁇ / b> J is configured to be perpendicular to the main surface of the mounting substrate 11.
- the light traveling from the sealing member 13 to the internal region of the mounting substrate 11 enters the inside of the cover member 30J from the side surface of the cover member 30J. .
- a part of the light incident on the cover member 30J is diffused on the first surface 30Ja and emitted to the outside of the cover member 30J.
- the light reflected by the first surface 30Ja is totally reflected by the second surface 30Jb, reaches the first surface 30Ja again, is diffused by the first surface 30Ja, and is emitted to the outside.
- the light incident on the cover member 30J is guided inside the cover member 30J, and diffused and emitted from the first surface 30Ja.
- the surface emitting light-emitting device LED module
- Modification 1 when this modification is applied to the illumination light source shown in FIGS. 24A and 24B, the distance between the light-transmitting cover 350 (including the diffusing material) shown in FIG. Even if the size is reduced, the luminance distribution of the translucent cover 350 can be made uniform. Similarly, when the present modification is applied to the illumination light source shown in FIG. 23, the luminance distribution can be made uniform. Thereby, the magnitude
- the sealing member 13 in the light emitting devices 10 and 10A is continuously formed without interruption, but is not limited thereto.
- annular sealing line may be formed as a whole by forming a linear sealing member 13 for each side of the mounting substrate 11 as in the light emitting device shown in FIG. 29A. That is, an annular sealing line may be formed by intermittently forming a plurality of linear sealing members 13 along each side of the mounting substrate 11.
- annular sealing line may be formed so that a part of the annular sealing member 13 formed along the entire circumference of the mounting substrate 11 is interrupted. That is, the annular sealing member includes a form in which even if a part of the sealing member is interrupted, the annular sealing member is annular by extending the interrupted portion of the sealing member along its shape.
- a cover member as shown in FIG. 30 may be used.
- the cover member 30K shown in FIG. 30A is configured by forming the shape of the cover member 30A according to the second embodiment shown in FIGS.
- the outer shape of the cover member can be changed as appropriate.
- an uneven portion 37 may be provided on the contact surface of the cover member 30K1 with the mounting substrate 11.
- the uneven portion 37 is pressed against the surface of the mounting substrate 11, so that the uneven portion 37 is deformed and contacts the mounting substrate 11. Therefore, the contact area between the cover member 30K1 and the mounting substrate 11 can be increased as compared with FIG.
- grooved part 37 can be applied to said each embodiment, and is suitable for Embodiment 3 which is a structure which spreads a part of frame part of a cover member toward outward especially by clamp
- the sealing member 13 (sealing line) and LED12 (element row
- the LED 12 may be arranged in an annular shape and the sealing member 13 may be formed in an annular shape regardless of the planar view shape of the mounting substrate 11.
- the LED 12 may be arranged in an annular shape and the sealing member 13 may be formed in an annular shape with respect to a polygonal substrate such as a quadrangle in plan view.
- the LEDs 12 may be arranged in a polygonal shape such as a rectangular shape and the sealing member 13 may be formed in a polygonal shape such as a rectangular shape with respect to a substrate having a circular shape in plan view.
- sealing member 13 sealing line
- and LED12 element row
- the sealing member 13 and LED12 are doubled. You may comprise in the above cyclic
- the light-emitting device has a COB type structure in which an LED chip is directly mounted on the mounting substrate 11 as a light-emitting element, but is not limited thereto.
- a light emitting element a package type comprising a resin container having a recess (cavity), an LED chip mounted in the recess, and a sealing member (phosphor-containing resin) enclosed in the recess.
- An SMD type light emitting device (LED module) configured by mounting a plurality of LED elements on a mounting substrate 11 on which metal wiring is formed using LED elements (SMD type LED elements) may be used. Absent.
- the light emitting device is configured to emit white light by the blue LED chip and the yellow phosphor, but is not limited thereto.
- a red phosphor or a green phosphor may be further mixed in addition to the yellow phosphor.
- the LED chip may emit an LED chip that emits a color other than blue.
- a combination of phosphor particles that emit light in three primary colors (red, green, and blue) can be used as the phosphor particles.
- 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.
- the LED is exemplified as the light emitting element.
- a semiconductor light emitting element such as a semiconductor laser, a solid light emitting element such as an organic EL (Electro Luminescence), or an inorganic EL may be used.
- the light emitting device, the base, the cover member, and the fastening member are built in the illumination light source, but the present invention is not limited to this.
- the light emitting device, the base, the cover member, and the fastening member in the first to seventh embodiments may be built in the lighting device, or may be built in other light emitting devices. May be.
- the present invention can be widely used in an illumination light source and an illumination device having a light emitting element, particularly in an illumination light source and an illumination device such as a lamp provided with the light emission device.
Abstract
Description
まず、本発明の実施の形態1に係る照明用光源における発光装置周辺の構成について、図1及び図2を用いて説明する。
図1に示すように、発光装置10は、実装基板11と、実装基板11の主面上に実装された複数のLED12と、LED12を封止する封止部材13と、LED12に電力を給電する電力供給部14とを備える。発光装置10は、さらに、実装基板11上に所定形状でパターン形成された配線15及び配線パッド16と、LED12に接続されたワイヤ17と、LED12を静電保護する保護素子18とを備える。
基台20は、発光装置10を支持する支持台であって、LEDランプ等の筐体内に設けられている。発光装置10は基台20に配置されて固定される。基台20には、発光装置10を載置するための載置面が形成されている。図2(b)に示すように、基台20の載置面には、発光装置10の実装基板11が載置される。
カバー部材30は、実装基板11の主面の一部の領域を覆うように構成されている。本実施の形態におけるカバー部材30は、所定形状の板状部材であり、実装基板11側の全面が実装基板11の主面と面接触している。カバー部材30は、例えば、ポリブチレンテレフタレート(PBT)等の絶縁性樹脂材料等を用いて構成することができる。
締め付け部材40は、実装基板11を挟んで基台20とカバー部材30とを締め付けるための部品であり、例えば、ねじ等を用いることができる。締め付け部材40によって、カバー部材30と実装基板11とを基台20に締め付けるように固定することができる。なお、基台20の固定穴20aが貫通孔である場合は、締め付け部材40として、ボルトとナットを用いることもできる。
リード線50は、発光装置10に電力を供給するための電力供給用のリード線であり、例えば、電力供給部14のソケットに装着されるコネクタ部51と、コネクタ部51に接続される一対の導電線52とからなる。
図2(a)に示すように、実装基板11は、例えば、平面視形状(実装基板11の主面垂直方向から見たときの形状)が正方形のものを用いることができる。なお、実装基板11の平面視形状としては、正方形に限らず、長方形等の四角形、六角形もしくは八角形等の多角形、又は、円形等、他の形状のものを用いることもできる。
LED12は、発光素子の一例であって、所定の電力により発光する半導体発光素子である。実装基板11上の複数のLED12は、Vf特性が同じものを用いることができるが、個々のLED12のVfは多少ばらついていてもよく、直列接続されたLED12の素子列全体でのVf合計が所定のばらつきに収まればよい。また、各LED12は、いずれも単色の可視光を発するベアチップであり、本実施の形態では、通電されれば青色光を発する青色発光LEDチップを用いている。青色LEDチップとしては、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半導体発光素子を用いることができる。
封止部材13は、例えば透光性の樹脂材料によって構成することができるが、LED12の光の波長を所定の波長に変換する必要がある場合には、波長変換材料が混入される。本実施の形態における封止部材13は、波長変換材として蛍光体を含み、LED12が発する光の波長(色)を変換する波長変換部材である。このような封止部材13としては、例えば、蛍光体粒子を含有する絶縁性の樹脂材料(蛍光体含有樹脂)によって構成することができる。蛍光体粒子は、LED12が発する光によって励起されて所望の色(波長)の光を放出する。
電力供給部14(給電端子)は、発光装置10の外部から所定の電力を受電する外部接続端子(電極端子)である。本実施の形態において、電力供給部14は、LED12を発光させるための直流電力を受電して、受電した直流電力を配線15及びワイヤ17を介して各LED12に供給する。なお、受電した直流電力は、保護素子18にも供給される。
配線15は、LED12と電力供給部14とを電気的に接続するために形成される。すなわち、配線15は、LED12を発光させるための電流が流れる導電性配線であって、例えば金属配線とすることができる。配線15によって、発光装置10に給電された電力が各LED12に供給される。
配線パッド16は、複数のLED12及び配線15と電気的に接続されている。配線パッド16は、LED12の配列形状の角部(コーナー部)に形成されている。つまり、実装基板11の平面視におけるLED12の配列形状が多角形である場合、配線パッド16はその多角形の角部に形成される。言い換えると、配線パッド16は、LED12と同じ列をなすように配置されており、各角に配置された配線パッド16と各辺に対応するようにして配列された複数のLED12とによって多角形が構成されている。例えば、LED12の配列形状が正方形である場合、配線パッド16は、正方形の4つの角部に形成される。
ワイヤ17は、例えば金ワイヤ等の導電線である。上述のとおり、ワイヤ17は、実装基板11の各辺において隣接するLED12同士を直接接続する。また、上述のとおり、実装基板11の角部において、ワイヤ17は、LED12と配線パッド16とに架設されている。ワイヤ17は、封止部材13から露出しないように封止部材13の中に埋め込まれていることが好ましい。
保護素子18は、逆耐圧が低いLED12が実装基板11上に生じる逆方向極性の静電気によって破壊されることを防止する。このため、保護素子18は、LED12とは逆極性で並列接続となるように配置される。
次に、本発明の実施の形態2に係る照明用光源における発光装置周辺の構成について、図5及び図6を用いて説明する。
次に、本発明の実施の形態2の変形例に係る照明用光源における発光装置周辺の構成について、図9A及び図9Bを用いて説明する。図9Aは、本発明の実施の形態2の変形例に係る照明用光源における発光装置周辺の構成を示す斜視図である。図9Bは、図9AのA-A’線における断面図である。
次に、本発明の実施の形態3に係る照明用光源における発光装置周辺の構成について、図10A及び図10Bを用いて説明する。図10Aは、本発明の実施の形態3に係る照明用光源における発光装置周辺の構成を示す斜視図である。図10Bは、図10AのB1-B1’線における断面図である。
次に、本発明の実施の形態4に係る照明用光源における発光装置周辺の構成について、図12及び図13を用いて説明する。
次に、本発明の実施の形態5に係る照明用光源における発光装置周辺の構成について、図14、図15A及び図15Bを用いて説明する。図14は、本発明の実施の形態5に係る照明用光源における発光装置周辺の構成を示す斜視図である。図15Aは、同発光装置周辺の構成を示す平面図であり、図15Bは、図14及び図15AのC-C’線における断面図である。
次に、本発明の実施の形態5の変形例1に係る照明用光源における発光装置周辺の構成について、図16A及び図16Bを用いて説明する。
次に、本発明の実施の形態5の変形例2に係る照明用光源における発光装置周辺の構成について、図17A及び図17Bを用いて説明する。
次に、本発明の実施の形態6に係る照明用光源における発光装置周辺の構成について、図18を用いて説明する。図18は、本発明の実施の形態6に係る照明用光源における発光装置周辺の構成を示す斜視図である。
次に、本発明の実施の形態7に係る照明用光源における発光装置周辺の構成について、図19、図20A及び図20Bを用いて説明する。図19は、本発明の実施の形態7に係る照明用光源における発光装置周辺の構成を示す斜視図である。図20Aは、図19のE1-E1’線における断面図であり、図20Bは、図19のE2-E2’線における断面図である。なお、図20A及び図20Bでは、実装基板11の第2貫通孔11bの図示は省略している。
次に、本発明の実施の形態8に係る照明装置100について、図21A及び図21Bを用いて説明する。図21Aは、本発明の実施の形態8に係る照明装置の外観斜視図である。図21Bは、図21AのA-A’線における本発明の実施の形態8に係る照明装置の断面図である。
次に、本発明の実施の形態9に係る照明用光源について説明する。本実施の形態では、照明用光源の一例として、電球形LEDランプ(LED電球)について説明する。
次に、本発明の実施の形態10に係る照明用光源について説明する。本実施の形態では、照明用光源の一例として、扁平型のLEDランプについて説明する。
以下、本実施の形態に係る照明用光源の変形例について説明する。
まず、変形例1について、図25を用いて説明する。図25(a)は、本発明の実施の形態の変形例1に係る照明用光源における発光装置周辺の構成を示す平面図であり、図25(b)は、図25(a)のA-A’線における同照明用光源における発光装置周辺の断面図である。
次に、変形例2について、図26を用いて説明する。図26(a)は、本発明の実施の形態の変形例2に係る照明用光源における発光装置周辺の構成を示す平面図であり、図26(b)は、図26(a)のA-A’線における同照明用光源における発光装置周辺の断面図である。
次に、変形例3について、図28を用いて説明する。図28(a)は、本発明の実施の形態の変形例3に係る照明用光源における発光装置周辺の構成を示す斜視図であり、図28(b)は、図28(a)のC-C’線における同照明用光源における発光装置周辺の断面図である。
以上、本発明に係る照明用光源及び照明装置について、実施の形態及び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及び変形例に限定されるものではない。
11 実装基板
11a、31、31A、31B、31C、31D、31E、31F、31G 第1貫通孔
11b、32 第2貫通孔
12 LED
13 封止部材
14 電力供給部
15 配線
16 配線パッド
17 ワイヤ
18 保護素子
20、220 基台
20a 固定穴
30、30A、30A1、30B、30C、30D、30E、30F、30G、30H、30I、30I1、30J、30K、30K1 カバー部材
30Ha、30Ia、30Ja 第1面
30Hb、30Ib、30Jb 第2面
31a 収納部
31B1、31C1、31E1、31G1 カバーガイド部
33、33E、33E1、33E2 押さえ部
33A2 カバー部
34、34G 外側面
34a、34Ga 切り込み部
35 凸部
36 白色ドット
37 凹凸部
40 締め付け部材
50 リード線
51 コネクタ部
52 導電線
100 照明装置
120 本体部
121 放熱フィン
122 取付部
122a ねじ穴
130 レンズ部
131 貫通孔
140 電源装置
150 端子台
160 取付板
170 固定用ばね
200 電球形ランプ
210 グローブ
230 回路ユニット
240 回路ホルダ
250 筐体
260 口金
300 LEDランプ
320 筐体
330 回路基板
340 反射鏡
350 透光性カバー
Claims (19)
- 基台と、
前記基台上に配置された実装基板と、
前記実装基板の主面に実装された複数の発光素子と、
前記実装基板の主面の一部の領域を覆うカバー部材と、
前記実装基板を挟んで前記基台と前記カバー部材とを締め付ける締め付け部材とを備え、
前記複数の発光素子は、前記カバー部材を囲むように実装される
照明用光源。 - 前記複数の発光素子は、前記実装基板の周縁部に環状に配列され、
前記カバー部材は、環状に配列された前記複数の発光素子の内側の領域に配置されている
請求項1に記載の照明用光源。 - 前記カバー部材は、前記締め付け部材を通すための貫通孔を有し、
前記カバー部材の一部は、前記貫通孔よりも外側に位置する
請求項1又は2に記載の照明用光源。 - 前記実装基板の前記貫通孔の開口径は、前記カバー部材の前記貫通孔の開口径よりも大きい
請求項3に記載の照明用光源。 - 前記実装基板の前記貫通孔の開口形状は、前記実装基板の中心と当該貫通孔の中心とを結ぶ直線に沿った方向である第1方向の長さが、前記第1方向に垂直な方向である第2方向の長さよりも長い形状である
請求項3に記載の照明用光源。 - 前記カバー部材は、前記実装基板の主面と面接触する開口を有する筒状の枠部を有する有底筒形状である
請求項1~5のいずれか1項に記載の照明用光源。 - 前記枠部の側面は、傾斜面であり、
前記枠部の開口面積は、前記実装基板から離れるに従って小さくなっている
請求項6に記載の照明用光源。 - さらに、前記実装基板の主面に設けられた導電部材を備え、
前記導電部材は、前記カバー部材の内部に収納されている
請求項6又は7に記載の照明用光源。 - 前記導電部材は、外部から前記複数の発光素子を発光させるための電力を受ける電力供給部、前記電力供給部と前記複数の発光素子とを電気的に接続する配線、及び、前記複数の発光素子を静電保護する保護素子の少なくとも1つである
請求項8に記載の照明用光源。 - さらに、前記実装基板の主面に設けられ、外部から前記複数の発光素子を発光させるための電力を受ける電力供給部を備え、
前記カバー部材には、前記電力供給部に接続されるリード線のコネクタ部を押さえる押さえ部が設けられている
請求項6又は7に記載の照明用光源。 - 前記カバー部材は、前記締め付け部材で締め付けられたときに、前記枠部の一部が外方に向かって広がるように構成されている
請求項6~10のいずれか1項に記載の照明用光源。 - 前記カバー部材は、板状であり、前記実装基板の主面と面接触している
請求項1~5のいずれか1項に記載の照明用光源。 - 前記カバー部材は、レンズ機能を兼ね備えている
請求項1~5のいずれか1項に記載の照明用光源。 - 前記カバー部材には、前記締め付け部材の端部を収納する凹部が設けられている
請求項1~13のいずれか1項に記載の照明用光源。 - 前記締め付け部材は、ねじである
請求項1~14のいずれか1項に記載の照明用光源。 - 前記複数の発光素子は、前記基台の上に直接実装された複数の発光ダイオードチップであり、
さらに、前記実装基板には、前記複数の発光ダイオードチップを一括封止する封止部材が形成されている
請求項1~15のいずれか1項に記載の照明用光源。 - 前記発光素子は、凹部を有する容器と、前記凹部に実装された発光ダイオードチップと、前記凹部に封入された封止部材とを有する
請求項1~15のいずれか1項に記載の照明用光源。 - 前記封止部材は、前記発光ダイオードチップの発光波長を変換する波長変換材を含む
請求項16又は17に記載の照明用光源。 - 請求項1~18のいずれか1項に記載の照明用光源を備える
照明装置。
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US14/650,625 US10337704B2 (en) | 2012-12-13 | 2013-10-16 | Illumination light source having fastener fastening a pedestal and cover together with a mounting substrate interposed therebetween and light emitting elements surround the cover, the entirety of which is spaced in a horizontal direction from the light emitting elements |
JP2014551840A JP5899449B2 (ja) | 2012-12-13 | 2013-10-16 | 照明用光源及び照明装置 |
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JP2018060737A (ja) * | 2016-10-07 | 2018-04-12 | パナソニックIpマネジメント株式会社 | 照明器具 |
JP2019012182A (ja) * | 2017-06-30 | 2019-01-24 | 日本精機株式会社 | バックライトユニット及びヘッドアップディスプレイ |
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US20150369461A1 (en) | 2015-12-24 |
JP5899449B2 (ja) | 2016-04-06 |
JPWO2014091657A1 (ja) | 2017-01-05 |
US10337704B2 (en) | 2019-07-02 |
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