WO2014030281A1 - 発光装置、電球形ランプ及び照明装置 - Google Patents
発光装置、電球形ランプ及び照明装置 Download PDFInfo
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- WO2014030281A1 WO2014030281A1 PCT/JP2013/003784 JP2013003784W WO2014030281A1 WO 2014030281 A1 WO2014030281 A1 WO 2014030281A1 JP 2013003784 W JP2013003784 W JP 2013003784W WO 2014030281 A1 WO2014030281 A1 WO 2014030281A1
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- Prior art keywords
- wavelength conversion
- light emitting
- light
- wavelength
- conversion member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- 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
- F21V19/0045—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by tongue and groove connections, e.g. dovetail interlocking means fixed by sliding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2105/00—Planar light sources
- F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2105/00—Planar light sources
- F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
- F21Y2105/12—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
-
- 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
- F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
- F21Y2107/90—Light sources with three-dimensionally disposed light-generating elements on two opposite sides of supports or substrates
-
- 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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- 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
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73251—Location after the connecting process on different surfaces
- H01L2224/73265—Layer and wire connectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/00011—Not relevant to the scope of the group, the symbol of which is combined with the symbol of this group
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/851—Wavelength conversion means
- H10H20/8514—Wavelength conversion means characterised by their shape, e.g. plate or foil
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/851—Wavelength conversion means
- H10H20/8515—Wavelength conversion means not being in contact with the bodies
Definitions
- the present invention relates to a light emitting device, a light bulb shaped lamp, and a lighting device, for example, a light emitting device using a semiconductor light emitting element, and a light bulb shaped lamp and a lighting device using the same.
- LEDs Light Emitting Diodes
- LEDs Light Emitting Diodes
- a bulb-type LED lamp (bulb-shaped LED lamp) that replaces a bulb-type fluorescent lamp or an incandescent bulb, or a straight-tube LED lamp (straight-tube LED lamp) that replaces a straight-tube fluorescent lamp Etc.
- Patent Document 1 discloses a conventional bulb-type LED lamp.
- Patent Document 2 discloses a conventional straight tube LED lamp.
- an LED module (light emitting device) in which a plurality of LEDs are mounted on a substrate is used as a light source.
- a light bulb-type LED lamp having a configuration that imitates an incandescent bulb in light emission characteristics and appearance has been studied.
- a bulb-type LED lamp having a configuration in which an LED module is held at a central position in the globe using a hollow globe (glass bulb) used in an incandescent bulb has been proposed.
- the LED module is fixed to the top of the column using a column (stem) extending from the opening of the globe toward the center of the globe.
- the LED module includes, for example, a substrate, a plurality of LED chips mounted in a plurality of rows on the surface of the substrate, and a plurality of phosphor-containing resins (line resins) that collectively seal the LED chips for each column.
- the light bulb type lamp is required to further increase the luminous flux, and it is considered to mount more LED chips.
- heat is generated from the LED chip itself by light emission, whereby the temperature of the LED chip rises, the light output of the LED chip is lowered, and the lifetime is shortened. Therefore, in the LED module, it is necessary to efficiently dissipate the heat generated in the LED chip. In this case, the heat dissipation of the LED module can be ensured by increasing the area of the substrate on which the LED chip is mounted.
- the first object of the present invention is to provide a light-emitting device, a light bulb shaped lamp, and a lighting device that can suppress a difference in brightness on a substrate.
- the conventional LED lamp has the sealing member containing a fluorescent substance as a wavelength conversion layer which converts the wavelength of the light which LED emits, and LED is sealed with a sealing member, for example, LED is The emitted blue light is emitted as white light from the sealing member.
- This phosphor has a characteristic that the conversion efficiency for converting the wavelength of the light decreases as the temperature rises.
- dimming of the LED is controlled by a change in the magnitude of the current supplied to the LED. That is, when the dimming is controlled, a large current or a small current is supplied to the LED. When a large current is supplied to the LED, heat is generated from the LED, and the conversion efficiency of the phosphor is reduced by this heat. For this reason, when the light control of LED is controlled, the color of the light radiate
- the conventional LED lamp has a problem that the color of the emitted light changes when dimming is controlled.
- a second object of the present invention is to provide a light emitting device, a light bulb shaped lamp, and an illumination device that can suppress a change in the color of emitted light even when dimming is controlled.
- an aspect of a first light emitting device is provided on a substrate, a first light emitting element disposed on the substrate, the first light emitting element, A first wavelength conversion member that converts the wavelength of light emitted from one light emitting element, and a second wavelength conversion member that is provided adjacent to the first wavelength conversion member and that converts the wavelength of light emitted from the first light emitting element.
- the first wavelength conversion member includes the first light emitting element, and the second wavelength conversion member emits light whose wavelength is converted by the second wavelength conversion member. Is not present.
- a plurality of the first light emitting elements are arranged in a row on the substrate, and the first wavelength conversion member is linearly formed on the substrate.
- the second wavelength conversion member may be provided linearly on the substrate in parallel with the first wavelength conversion member.
- a said 1st wavelength conversion member is a 1st wavelength conversion material which converts the wavelength of the light which the said some 1st light emitting element emits, and the said 1st wavelength.
- a first sealing member including a conversion material and linearly sealing the plurality of first light emitting elements, and the second wavelength conversion member is emitted from the plurality of first light emitting elements. It is good also as consisting of the 2nd wavelength conversion material which converts the wavelength of light, and the 1st dummy sealing member containing the said 2nd wavelength conversion material.
- the concentration of the second wavelength conversion material in the first dummy sealing member is equal to or lower than the concentration of the first wavelength conversion material in the first sealing member. It is good also as.
- the length of the first dummy sealing member may be equal to or shorter than the length of the first sealing member.
- the first wavelength conversion material and the second wavelength conversion material are phosphor particles, and the first sealing member and the first dummy sealing.
- the member may be a resin.
- the first dummy sealing member may include a non-light emitting electronic component.
- the first wavelength conversion member in a cross section perpendicular to the longitudinal direction of the first wavelength conversion member is substantially semicircular
- One light emitting element may be arranged in a line, and each of the plurality of first light emitting elements may pass through a substantially center of a width of the first wavelength conversion member.
- a plurality of second light emitting elements arranged in a row on the substrate along a column direction of the plurality of first light emitting elements, And a third wavelength conversion member that is linearly provided on the substrate and converts a wavelength of light emitted from the plurality of second light emitting elements, and the third wavelength conversion member includes the plurality of second wavelengths.
- a light emitting element is present, and the second wavelength conversion member is provided between the first wavelength conversion member and the third wavelength conversion member, and also converts wavelengths of light emitted by the plurality of second light emitting elements, It is good.
- a said 1st wavelength conversion member is a 1st wavelength conversion material which converts the wavelength of the light which the said some 1st light emitting element emits, and the said 1st wavelength.
- a first sealing member including a conversion material and linearly sealing the plurality of first light emitting elements, wherein the second wavelength conversion member includes the plurality of first light emitting elements and the plurality of first light emitting elements;
- the second wavelength conversion material that converts the wavelength of light emitted by the plurality of second light emitting elements, and a first dummy sealing member that includes the second wavelength conversion material, the third wavelength conversion member,
- a second wavelength sealing material that includes a third wavelength conversion material that converts the wavelength of light emitted from the second light emitting element, and the third wavelength conversion material, and that is provided in a linear shape by collectively sealing the plurality of second light emitting elements. It may consist of a stop member.
- the plurality of first light emitting elements and the plurality of second light emitting elements are light emitting elements that emit light of the same color, and the first dummy sealing
- the concentration of the second wavelength conversion material in the member is equal to or lower than the concentration of the first wavelength conversion material in the first sealing member, and is equal to or lower than the concentration of the third wavelength conversion material in the second sealing member. It is good.
- the concentration of the first wavelength conversion material in the first sealing member and the concentration of the third wavelength conversion material in the second sealing member are approximately. It may be the same.
- the first wavelength conversion material, the second wavelength conversion material, and the third wavelength conversion material are phosphor particles, and the first sealing member.
- the first dummy sealing member and the second sealing member may be resin.
- the first wavelength conversion member in a cross section perpendicular to the longitudinal direction of the first wavelength conversion member is substantially semicircular
- the third wavelength The shape of the third wavelength conversion member in the cross section perpendicular to the longitudinal direction of the conversion member is substantially semicircular
- the plurality of first light emitting elements and the plurality of second light emitting elements are respectively arranged in a row, Each of the plurality of first light emitting elements passes through the approximate center of the width of the first wavelength conversion member, and each of the plurality of second light emitting elements passes through the approximate center of the width of the third wavelength conversion member. It is good.
- a plurality of third light emitting elements and a plurality of third light emitting elements arranged in a row on the substrate along a column direction of the plurality of second light emitting elements.
- a fourth wavelength conversion member that is linearly provided on the substrate adjacent to the third wavelength conversion member and converts the wavelength of light emitted by the plurality of third light emission elements;
- a plurality of third light emitting elements and a fifth wavelength converting member that converts wavelengths of light emitted by the plurality of fourth light emitting elements, which are linearly provided on the substrate in parallel with the fourth wavelength converting member;
- a sixth wavelength conversion member that is linearly provided on the substrate adjacent to the fifth wavelength conversion member and converts the wavelength of light emitted by the plurality of fourth light emitting elements, and the fourth wavelength
- the plurality of third light emitting elements exist, and the sixth wavelength conversion
- the material includes the plurality of fourth light emitting elements, and the fifth wavelength conversion member is provided between the fourth wavelength conversion member and the sixth wavelength
- a said 4th wavelength conversion member is a 4th wavelength conversion material which converts the wavelength of the light which the said some 3rd light emitting element emits, and the said 4th wavelength.
- a third sealing member that includes a conversion material and is linearly sealed by sealing the plurality of third light emitting elements, and the fifth wavelength conversion member includes the plurality of third light emitting elements and the plurality of light emitting elements.
- the seventh wavelength conversion member further includes a seventh wavelength conversion member provided between the third wavelength conversion member and the fourth wavelength conversion member, and the seventh wavelength.
- the conversion member includes a seventh wavelength conversion material that converts wavelengths of light emitted by the plurality of second light emitting elements and the plurality of third light emission elements, and a third dummy sealing member that includes the seventh wavelength conversion material.
- the seventh wavelength conversion member may not include a light emitting element that emits light whose wavelength is converted by the seventh wavelength conversion member.
- the first wavelength conversion member is disposed so as to cover at least a part of the first light emitting element
- the second wavelength conversion member is disposed at a position farther than the first wavelength conversion member from the first light emitting element, and the first light emitting element is dimmed by a change in magnitude of a supplied current. Is controlled, and the second wavelength conversion amount indicating the degree to which the wavelength of the light emitted by the first light emitting element in the second wavelength conversion member is converted is the amount of light emitted by the first light emitting element in the first wavelength conversion member. It may be larger than the first wavelength conversion amount indicating the degree of wavelength conversion.
- a said 1st wavelength conversion member is a sealing member which seals the said 1st light emitting element
- a said 2nd wavelength conversion member is on the said board
- the resin may be disposed on the side of the first wavelength conversion member.
- the second wavelength conversion member may have a higher concentration of phosphor particles contained than the first wavelength conversion member.
- the substrate has a light-transmitting property
- the first light-emitting device is further formed between the substrate and the first light-emitting element.
- a third wavelength conversion member that is a phosphor layer formed, and the third wavelength conversion member is formed such that the wavelength conversion amount of the light emitted by the first light emitting element increases as the distance from the first light emitting element increases. It is good as well.
- the third wavelength conversion member may be formed so that the thickness increases as the distance from the first light emitting element increases.
- the third wavelength conversion member is formed such that the concentration of the phosphor particles contained increases as the distance from the first light emitting element increases. Also good.
- the substrate has translucency, and the first wavelength conversion member and the second wavelength conversion member are the substrate and the first light emission. It is good also as a fluorescent substance layer integrally formed between elements.
- the second wavelength conversion member may be thicker than the first wavelength conversion member.
- the second wavelength conversion member may have a higher concentration of phosphor particles contained than the first wavelength conversion member.
- One aspect of the first light bulb shaped lamp according to the present invention is any one of the first light-emitting devices, the translucent globe, and the support column provided to extend inward of the globe.
- the first light emitting device is disposed in the globe and is fixed to the support column.
- the first light emitting device has a first surface of the globe on which the plurality of first light emitting elements are provided. It is good also as fixing to the said support
- the first light emitting device including the eighth wavelength conversion member, the translucent globe, and the inward direction of the globe.
- the first light emitting device is disposed in the globe and is fixed to the column, and the first light emitting device is further provided on the first of the substrate.
- a ninth wavelength conversion member that converts the wavelength of light emitted from the light source, and the ninth wavelength conversion member may include the plurality of fifth light emitting elements.
- the first light emitting device is further provided in a line on the second surface in parallel with the ninth wavelength conversion member.
- a tenth wavelength conversion member that converts a wavelength of light emitted by the plurality of fifth light emitting elements, and emitting light whose wavelength is converted by the tenth wavelength conversion member in the tenth wavelength conversion member.
- the element may not exist.
- the ninth wavelength conversion member includes a ninth wavelength conversion material that converts wavelengths of light emitted from the plurality of fifth light emitting elements, and the ninth wavelength conversion member.
- the tenth wavelength conversion member includes a wavelength conversion material and a fifth sealing member provided in a linear shape by collectively sealing the plurality of fifth light emitting elements. It is good also as consisting of the 10th wavelength conversion material which converts the wavelength of the light to emit, and the 5th dummy sealing member containing the said 10th wavelength conversion material.
- the substrate includes a main substrate on which the plurality of first light emitting elements are provided on the surface, and the plurality of fifth light emitting elements on the surface.
- the main substrate and the sub-substrate are arranged such that the back surfaces where the plurality of first light-emitting elements and the plurality of fifth light-emitting elements are not provided are opposed to each other. Also good.
- an aspect of the first lighting device according to the present invention is characterized by including any one of the first light bulb shaped lamps described above.
- one embodiment of a second light emitting device covers a substrate, a light emitting element disposed on the substrate, and at least a part of the light emitting element.
- a first wavelength converter that is disposed and converts a wavelength of light emitted from the light emitting element; and a wavelength of light emitted from the light emitting element, the distance from the light emitting element being disposed at a position farther than the first wavelength converter.
- a second wavelength conversion unit for converting the light, and the light emitting element is controlled in light control by a change in magnitude of a supplied current, and converts a wavelength of light emitted by the light emitting element in the second wavelength conversion unit.
- the second wavelength conversion amount indicating the degree to which the light is emitted is larger than the first wavelength conversion amount indicating the degree of conversion of the wavelength of the light emitted from the light emitting element in the first wavelength conversion unit.
- the first wavelength conversion unit is a sealing member that seals the light emitting element
- the second wavelength conversion unit is on the substrate
- the second wavelength conversion unit may have a higher concentration of phosphor particles contained than the first wavelength conversion unit.
- the substrate has translucency
- the light emitting device further includes a phosphor layer formed between the substrate and the light emitting element.
- the third wavelength conversion unit may be formed so that the wavelength conversion amount of light emitted from the light emitting element increases as the distance from the light emitting element increases.
- the third wavelength conversion unit may be formed so that the thickness increases as the distance from the light emitting element increases.
- the third wavelength conversion unit is formed so that the concentration of the phosphor particles contained increases as the distance from the light emitting element increases. Good.
- the substrate has translucency
- the first wavelength conversion unit and the second wavelength conversion unit include the substrate, the light emitting element, and the like.
- the phosphor layer may be integrally formed between the two.
- the second wavelength conversion unit may be thicker than the first wavelength conversion unit.
- the second wavelength conversion unit may have a higher concentration of phosphor particles contained than the first wavelength conversion unit.
- any one of the second light emitting devices described above a hollow globe that houses the second light emitting device, and the second light emitting device emit light. It is a light bulb shaped lamp provided with a base for receiving electric power for causing the base and a drive circuit for controlling the dimming of the light emitting element by supplying the power received by the base to the light emitting element.
- one mode of the second lighting device according to the present invention is characterized by including the above-described light bulb shaped lamp.
- the difference in brightness on the substrate of the first light emitting device can be suppressed.
- the second light emitting device the second light bulb shaped lamp, and the second lighting device according to the present invention, even when the dimming is controlled, the color change of the emitted light is suppressed. be able to.
- FIG. 1 is a side view of a light bulb shaped lamp according to Embodiment 1 of the present invention.
- FIG. 2 is an exploded perspective view of the light bulb shaped lamp according to Embodiment 1 of the present invention.
- FIG. 3 is a cross-sectional view of the light bulb shaped lamp according to Embodiment 1 of the present invention.
- FIG. 4 is a diagram showing the configuration of the LED module in the light bulb shaped lamp according to Embodiment 1 of the present invention, where (a) is a top view, and (b), (c), (d), and (e) are the top views. It is sectional drawing.
- FIG. 5 is an enlarged cross-sectional view of the LED in the LED module of the light bulb shaped lamp according to Embodiment 1 of the present invention.
- FIGS. 6A and 6B are diagrams showing a configuration around the LED module in the light bulb shaped lamp according to the first embodiment of the present invention.
- FIG. 6A is a top view
- FIGS. 6B and 6C are cross-sectional views.
- FIG. 7 is a diagram for explaining the operational effects of the LED module in the light bulb shaped lamp according to Embodiment 1 of the present invention, (a) is a partially enlarged cross-sectional view of the LED module of Comparative Example 1, (B) is a partial expanded sectional view of the LED module of the comparative example 2, (c) is a partially expanded sectional view of the LED module in Embodiment 1.
- FIG. 8A is a plan view of the LED module in the light bulb shaped lamp according to the first modification of the first embodiment of the present invention.
- FIG. 8B is a plan view of the LED module in the light bulb shaped lamp according to the second modification of the first embodiment of the present invention.
- FIG. 9 is a diagram showing a configuration around an LED module in a light bulb shaped lamp according to a third modification of the first embodiment of the present invention, wherein (a) is a top view, (b), (c) and (d). Is a cross-sectional view.
- FIG. 10 is a diagram showing a configuration around the LED module in the light bulb shaped lamp according to the fourth modification of the first embodiment of the present invention, where (a) is a top view, and (b), (c) and (d).
- FIG. 11 is an external perspective view of a light bulb shaped lamp according to Embodiment 2 of the present invention.
- FIG. 12 is an exploded perspective view of a light bulb shaped lamp according to Embodiment 2 of the present invention.
- FIG. 13 is a diagram showing one cross section of the configuration of the light bulb shaped lamp according to the second embodiment of the present invention.
- FIG. 14 is a diagram showing another cross section of the configuration of the light bulb shaped lamp according to the second embodiment of the present invention.
- 15A and 15B are diagrams showing a configuration of an LED module according to Embodiment 2 of the present invention, in which FIG. 15A is a top view and FIG. 15B is a cross-sectional view.
- FIG. 15A is a top view
- FIG. 15B is a cross-sectional view.
- FIG. 16 is a partially enlarged cross-sectional view illustrating the configuration of the sealing member and the wavelength conversion member in the LED module according to Embodiment 2 of the present invention.
- FIG. 17 is a diagram for explaining an effect produced by the LED module according to Embodiment 2 of the present invention.
- 18A and 18B are diagrams showing a configuration of an LED module according to Modification 1 of Embodiment 2 of the present invention, where FIG. 18A is a top view and FIG. 18B is a cross-sectional view.
- FIG. 19 is an enlarged cross-sectional view around the LED in the LED module according to Modification 1 of Embodiment 2 of the present invention.
- FIG. 20 is an enlarged cross-sectional view of a main part of an LED module according to Modification 1 of Embodiment 2 of the present invention.
- FIG. 21 is a diagram for explaining an effect produced by the LED module according to the first modification of the second embodiment of the present invention.
- 22A and 22B are diagrams showing a configuration of an LED module according to Modification 2 of Embodiment 2 of the present invention, where FIG. 22A is a top view and FIG. 22B is a cross-sectional view.
- FIG. 23 is an enlarged cross-sectional view of a relevant part of an LED module according to Modification 2 of Embodiment 2 of the present invention.
- FIG. 24 is an enlarged cross-sectional view of a relevant part of an LED module according to Modification 3 of Embodiment 2 of the present invention.
- FIG. 25 is an enlarged cross-sectional view of a main part of an LED module according to Modification 4 of Embodiment 2 of the present invention.
- 26A and 26B are diagrams showing the configuration of an LED module according to Modification 1 of the present invention, where FIG. 26A is a plan view and FIG. 26B is a cross-sectional view taken along the line A-A ′ of FIG.
- FIG. 27 is a diagram for explaining a method of assembling an LED module according to the first modification of the present invention.
- FIG. 28 is a perspective view showing a configuration of an LED module according to Modification 2 of the present invention.
- FIG. 29 is a plan view showing a configuration of another first example of the LED module according to Modification 2 of the present invention.
- FIG. 30 is a plan view showing a configuration of another second example of the LED module according to Modification 2 of the present invention.
- FIG. 31 is a plan view showing a configuration of another third example of the LED module according to Modification 2 of the present invention.
- FIG. 32 is a plan view showing a configuration of another fourth example of the LED module according to Modification 2 of the present invention.
- FIG. 33 is a cross-sectional view showing a configuration of a first example of an LED module according to another modification of the present invention.
- FIG. 34 is a cross-sectional view showing a configuration of a second example of an LED module according to another modification of the present invention.
- FIG. 35 is a cross-sectional view showing a configuration of a third example of an LED module according to another modification of the present invention.
- FIG. 36 is a cross-sectional view of a light bulb shaped lamp according to another modification of the first embodiment of the present invention.
- FIG. 37 is a schematic cross-sectional view of the illumination device according to the embodiment of the present invention.
- Embodiment 1 of the present invention will be described below.
- FIG. 1 is a side view of a light bulb shaped lamp 1 according to the present embodiment.
- FIG. 2 is an exploded perspective view of the light bulb shaped lamp 1 according to the present embodiment.
- FIG. 3 is a cross-sectional view of the light bulb shaped lamp 1 according to the present embodiment.
- the upper side of the paper is the front (upper side) of the light bulb shaped lamp 1
- the lower side of the paper is the rear (lower side) of the light bulb shaped lamp 1
- the left and right sides of the paper are the side of the light bulb shaped lamp 1.
- “rear” refers to the direction of the base with respect to the substrate of the LED module
- “front” refers to the direction of the opposite side of the base with respect to the substrate of the LED module. That is, the “side” means a direction parallel to the main surface of the substrate of the LED module.
- the alternate long and short dash line drawn along the vertical direction of the drawing indicates the lamp axis J (center axis) of the bulb-type lamp 1.
- the lamp axis J is an axis serving as a rotation center when the light bulb shaped lamp 1 is attached to a socket of a lighting device (not shown), and coincides with the rotation axis of the base.
- the definition of the above direction is independent of the direction in which the light bulb shaped lamp 1 is attached to the lighting fixture, and when the light bulb shaped lamp 1 is attached to the lighting fixture, any direction is upward or downward. It doesn't matter. The definition of this direction is the same in the following.
- the bulb-type lamp 1 is a bulb-type LED lamp (LED bulb) that is a substitute for a bulb-type fluorescent lamp or an incandescent bulb.
- the light bulb shaped lamp 1 includes a translucent globe 10, an LED module 20 that is a light source, a base 30 that receives electric power from the outside of the lamp, a support column 40, a support base 50, a resin case 60, a lead wire 70, And a lighting circuit 80.
- the bulb-shaped lamp 1 includes an envelope formed by the globe 10, the resin case 60 (first case portion 61), and the base 30. Moreover, the light bulb shaped lamp 1 in the present embodiment is configured to have a brightness equivalent to the 60 W type.
- the globe 10 is a light-transmitting cover that houses the LED module 20 and transmits light from the LED module 20 to the outside of the lamp.
- the light of the LED module 20 that has entered the inner surface of the globe 10 passes through the globe 10 and is extracted to the outside of the globe 10.
- the globe 10 in the present embodiment is made of a material that is transparent to the light from the LED module 20.
- a globe 10 for example, a glass bulb (clear bulb) made of silica glass that is transparent to visible light can be used.
- the LED module 20 housed in the globe 10 can be viewed from the outside of the globe 10.
- the globe 10 has a shape in which one end is closed in a spherical shape and an opening 11 is provided at the other end.
- the shape of the globe 10 is such that a part of a hollow sphere narrows while extending away from the center of the sphere, and the opening 11 is formed at a position away from the center of the sphere.
- a glass bulb having the same shape as a general incandescent bulb can be used.
- a glass bulb such as an A shape, a G shape, or an E shape can be used as the globe 10.
- the globe 10 is not necessarily transparent to visible light, and the globe 10 may have a light diffusion function.
- a milky white light diffusing film may be formed by applying a resin containing a light diffusing material such as silica or calcium carbonate, a white pigment, or the like to the entire inner surface or outer surface of the globe 10.
- the material of the globe 10 is not limited to a glass material, and a resin material such as a synthetic resin such as acrylic (PMMA) or polycarbonate (PC) may be used.
- the LED module 20 includes an LED (LED chip), and is a light emitting module (light emitting device) that emits light when power is supplied to the LED via a lead wire 70, and emits light of a predetermined wavelength (color). discharge.
- the LED module 20 is held in the hollow inside the globe 10 by the support column 40.
- the LED module 20 is preferably disposed at a spherical center position formed by the globe 10 (for example, inside the large diameter portion where the inner diameter of the globe 10 is large).
- the light distribution characteristic of the light bulb shaped lamp 1 becomes a light distribution characteristic approximate to that of a general incandescent light bulb using a conventional filament coil.
- the base 30 is a power receiving unit that receives power for causing the LEDs of the LED module 20 to emit light from the outside of the light bulb shaped lamp 1.
- the base 30 receives AC power through two contacts, and the power received by the base 30 is input to the power input unit of the lighting circuit 80 via a lead wire.
- AC power is supplied to the base 30 from a commercial power supply (AC 100 V).
- the base 30 is attached to a socket of a lighting fixture (lighting device) and receives AC power from the socket. Thereby, the light bulb shaped lamp 1 (LED module 20) is turned on.
- the base 30 has a metal bottomed cylindrical shape (cap shape), and includes a shell portion whose outer peripheral surface is a male screw and an eyelet portion attached to the shell portion via an insulating portion.
- a screwing portion for screwing with the socket of the lighting device is formed on the outer peripheral surface of the base 30, and a screwing portion for screwing with the resin case 60 is formed on the inner peripheral surface of the base 30.
- the type of the base 30 is not particularly limited, but in the present embodiment, a screwed-type Edison type (E type) base is used.
- E type screwed-type Edison type
- the column 40 is a metal stem (metal column) provided so as to extend from the vicinity of the opening 11 of the globe 10 toward the inside of the globe 10, and a holding member that holds the LED module 20 in the globe 10. Function as. One end of the column 40 is connected to the LED module 20, and the other end is connected to the support base 50.
- the support column 40 also functions as a heat radiating member for radiating heat generated in the LED module 20 to the base 30 side. Therefore, the support column 40 is composed of a metal material having high thermal conductivity, for example, aluminum (Al), copper (Cu), or iron (Fe) having a thermal conductivity of about 237 [W / m ⁇ K] as a main component.
- the heat radiation efficiency by the support 40 can be increased. As a result, it is possible to suppress a decrease in light emission efficiency and lifetime of the LED due to temperature rise.
- the metal material of the support column 40 copper or the like may be used in addition to the aluminum alloy.
- pillar 40 you may use what formed the metal film on the surface of the support
- the support column 40 is configured by, for example, integrally molding a main shaft portion 41 and a fixed portion 42.
- the main shaft portion 41 is a cylindrical member having a constant cross-sectional area.
- One end of the main shaft portion 41 is connected to the fixed portion 42, and the other end is connected to the support base 50.
- the fixing part 42 has a fixing surface to which the LED module 20 is fixed, and this fixing surface is in contact with the back surface of the substrate of the LED module 20.
- the fixing portion 42 further has a protruding portion that protrudes from the fixing surface, and this protruding portion fits into a through hole provided in the substrate of the LED module 20.
- the LED module 20 and the fixing surface of the fixing portion 42 are bonded to each other with a resin adhesive such as silicone resin.
- the substrate 21 in the LED module 20 is fixed to the support column 40 so that the back surface is in contact with the support column 40. Therefore, since the thermal radiation efficiency of LED module 20 can be improved, the fall of the luminous efficiency of LED by the temperature rise and the fall of a lifetime can be suppressed.
- the support base (support plate) 50 is a member that supports the support column 40 and is fixed to the resin case 60.
- the support base 50 is configured to be connected to the opening end of the opening 11 of the globe 10 and close the opening 11 of the globe 10.
- the support base 50 is formed of a disk-shaped member having a stepped portion on the periphery, and the opening end of the opening 11 of the globe 10 is in contact with the stepped portion. And in this level
- the support base 50 is made of a metal material having a high thermal conductivity such as aluminum, like the support column 40, so that the heat radiation efficiency of the LED module 20 that conducts the support column 40 by the support table 50 is increased. As a result, it is possible to further suppress the decrease in the luminous efficiency and the lifetime of the LED due to the temperature increase.
- pillar 40 may be integrally shape
- the resin case 60 is an insulating case (circuit holder) that insulates the support column 40 and the base 30 and houses the lighting circuit 80.
- the resin case 60 has a large-diameter cylindrical first case portion 61 and a small-diameter cylindrical second.
- the case part 62 is comprised.
- the resin case 60 is formed by, for example, polybutylene terephthalate (PBT).
- the second case portion 62 is configured such that the outer peripheral surface is in contact with the inner peripheral surface of the base 30, and a screwing portion for screwing with the base 30 is formed on the outer peripheral surface of the second case portion 62. ing.
- the two lead wires 70 are a pair of lead wires for supplying power for lighting the LED module 20 from the lighting circuit 80 to the LED module 20, and can be composed of a wire-like metal wire such as a copper wire. it can.
- Each lead wire 70 is disposed in the globe 10, one end is electrically connected to the external terminal of the LED module 20, and the other end is electrically connected to the power output unit of the lighting circuit 80, in other words, the base 30. Yes.
- the two lead wires 70 are, for example, vinyl wires composed of a metal core wire and an insulating resin that covers the core wire, and the LED module 20 is not covered with the insulating resin and the surface thereof is exposed. It is electrically connected via a core wire. At this time, the core wire may not be covered with the insulating resin between the portion of the two lead wires 70 protruding from the surface of the substrate 21 and the portion protruding from the back surface of the substrate 21 by 3 mm or less.
- the lighting circuit 80 is a drive circuit (circuit unit) for lighting the LEDs of the LED module 20 and is covered with a resin case 60.
- the lighting circuit 80 includes a circuit that converts AC power fed from the base 30 into DC power, and supplies the converted DC power to the LEDs of the LED module 20 via the two lead wires 70.
- the lighting circuit 80 includes, for example, a circuit board and a plurality of circuit elements (electronic components) mounted on the circuit board.
- the circuit board is a printed board on which metal wiring is patterned, and electrically connects a plurality of circuit elements mounted on the circuit board.
- the circuit board is arranged in a posture in which the main surface is orthogonal to the lamp axis.
- the circuit elements are, for example, various capacitors, resistor elements, rectifier circuit elements, coil elements, choke coils (choke transformers), noise filters, diodes, or integrated circuit elements, and the lighting circuit 80 is a circuit element among these circuit elements. It is configured by selecting as appropriate.
- the light bulb shaped lamp 1 is not necessarily provided with the lighting circuit 80.
- the lighting circuit 80 is not limited to a smoothing circuit, and a dimming circuit, a booster circuit, and the like can be appropriately selected and combined.
- FIG. 4 is a diagram showing a configuration of the LED module in the light bulb shaped lamp 1 according to the present embodiment.
- 4A is a plan view of the LED module 20 as viewed from above
- FIG. 4B is a cross-sectional view of the LED module 20 taken along the line AA ′ in FIG. 4C is a cross-sectional view of the LED module 20 taken along the line BB ′ in FIG. 4A
- FIG. 4D is a cross-sectional view taken along the line CC ′ in FIG.
- FIG. 4E is a cross-sectional view of the LED module 20, and
- FIG. 4E is a cross-sectional view of the LED module 20 taken along the line DD 'in FIG.
- the LED module 20 is a light emitting module (light emitting device) that emits light mainly toward the front and sides, and has a COB (Chip On Board) structure in which a bare chip is directly mounted on the surface of the substrate 21.
- COB Chip On Board
- the LED module 20 includes a substrate 21, a first main light emitting unit ML1 and a second main light emitting unit ML2 provided on the substrate 21, and a first main light emitting unit ML1 and a second main light emitting unit.
- the LED module 20 includes a metal wiring 26, a wire 27, and a terminal 28.
- the first main light emitting unit ML1 includes a plurality of LEDs 22a (first light emitting elements) arranged in a row on the surface (first surface) of the substrate 21. ) And a first wavelength conversion member WC1 that converts the wavelength of light emitted from the LED 22a. That is, the first main light emitting unit ML1 is a light emitting unit that has its own light emitting element, and a plurality of LEDs 22a exist in the first wavelength conversion member WC1.
- the plurality of LEDs 22a are arranged in a straight line, and the first wavelength conversion member WC1 is on the surface of the substrate 21 along the arrangement direction (column direction) of the plurality of LEDs 22a. Are provided in a straight line.
- the first wavelength conversion member WC1 includes a first wavelength conversion material (not shown) that converts the wavelength of light emitted from the LEDs 22a, and a first sealing member that includes the first wavelength conversion material and collectively seals the plurality of LEDs 22a. 23a.
- the first sealing member 23a is linearly provided on the surface of the substrate 21 so as to cover the plurality of LEDs 22a arranged linearly.
- the shape of the first wavelength conversion member WC1 in the cross section perpendicular to the longitudinal direction of the first wavelength conversion member WC1 (first sealing member 23a) is substantially semicircular.
- each of several LED22a is arrange
- 1st sub light emission part SL1 consists of 2nd wavelength conversion member WC2 which converts the wavelength of the light which LED22a in 1st main light emission part ML1 and LED22b in 2nd main light emission part ML2 emit.
- the first sub-light-emitting unit SL1 is a light-emitting unit that does not have an LED and emits light from an LED outside the first sub-light-emitting unit SL1, and as shown in FIG.
- the wavelength conversion member WC2 there is no light emitting element that emits light whose wavelength is converted by the second wavelength conversion member WC2.
- the first sub-light emitting unit SL1 is configured only by the second wavelength conversion member WC2.
- the second wavelength conversion member WC2 of the first sub-light emitting unit SL1 includes a second wavelength conversion material (not shown) that converts the wavelength of light emitted from both the LED 22a and the LED 22b, and a first dummy that includes the second wavelength conversion material. And a sealing member 24a.
- the first dummy sealing member 24a can be made of the same sealing material as the first sealing member 23a and the second sealing member 23b, and the first sealing member 23a and the second sealing member 23b are externally visible. Is the same.
- the second wavelength conversion member WC2 (first dummy sealing member 24a) is linearly provided on the substrate 21 between the first sealing member 23a and the second sealing member 23b.
- the second main light emitting unit ML2 has the same configuration as the first main light emitting unit ML1.
- the second main light emitting unit ML2 includes a plurality of LEDs 22b (second light emitting elements) arranged in a row on the surface of the substrate 21, and a third wavelength that converts the wavelength of light emitted by the LEDs 22b. It consists of conversion member WC3. That is, the second main light emitting unit ML2 is a light emitting unit having its own light emitting element, like the first main light emitting unit ML1, and a plurality of LEDs 22b are present in the third wavelength conversion member WC3.
- the plurality of LEDs 22b are arranged in a straight line like the LEDs 22a, and the third wavelength conversion member WC3 is a substrate along the arrangement direction (column direction) of the plurality of LEDs 22b. It is provided in a straight line on the surface of 21.
- the third wavelength conversion member WC3 includes a third wavelength conversion material (not shown) that converts the wavelength of light emitted by the LEDs 22b, and a second sealing member that includes the third wavelength conversion material and collectively seals the plurality of LEDs 22b. 23b.
- the second sealing member 23b is linearly provided on the surface of the substrate 21 so as to cover the plurality of LEDs 22b arranged in a straight line.
- the shape of the third wavelength conversion member WC3 in the cross section perpendicular to the longitudinal direction of the third wavelength conversion member WC3 (second sealing member 23b) is substantially semicircular.
- each of several LED22b is arrange
- the 3rd main light emission part ML3 is the structure similar to 1st main light emission part ML1.
- the third main light emitting unit ML3 has a plurality of LEDs 22c (third light emitting elements) arranged in a row on the surface of the substrate 21, and a fourth wavelength that converts the wavelength of light emitted by the LEDs 22c. It consists of conversion member WC4. That is, the third main light emitting unit ML3 is a light emitting unit having its own light emitting element, like the first main light emitting unit ML1, and a plurality of LEDs 22c are present in the third wavelength conversion member WC3.
- the plurality of LEDs 22c are arranged in a straight line like the LED 22a, and the fourth wavelength conversion member WC4 is a substrate along the arrangement direction (column direction) of the plurality of LEDs 22c. It is provided in a straight line on the surface of 21.
- the shape of the fourth wavelength conversion member WC4 in the cross section perpendicular to the longitudinal direction of the fourth wavelength conversion member WC4 (third sealing member 23c) is substantially semicircular.
- each of several LED22c is arrange
- the fourth wavelength conversion member WC4 includes a fourth wavelength conversion material (not shown) that converts the wavelength of light emitted from the LED 22c, and a third sealing member that includes the fourth wavelength conversion material and collectively seals the plurality of LEDs 22c. 23c.
- the third sealing member 23c is linearly provided on the surface of the substrate 21 so as to cover the plurality of LEDs 22c arranged in a straight line.
- 2nd sub light emission part SL2 consists of 5th wavelength conversion member WC5 which converts the wavelength of the light which LED22c in 3rd main light emission part ML3 and LED22d in 4th main light emission part ML4 emit.
- the second sub-light-emitting unit SL2 is a light-emitting unit that does not have an LED, but emits light from an LED outside the second sub-light-emitting unit SL2, and has a fifth wavelength.
- the conversion member WC5 there is no light emitting element that emits light whose wavelength is converted by the fifth wavelength conversion member WC5.
- the second sub-light emitting unit SL2 does not have an LED, but unlike the first sub-light emitting unit SL1, the fifth wavelength conversion member WC5 has a structure as shown in FIG.
- a Zener diode 25 exists as a non-light emitting electronic component (semiconductor electronic component or the like).
- the Zener diode 25 prevents the LEDs 22a to 22d having a low reverse withstand voltage from being destroyed by reverse polarity power (such as static electricity), and is provided so as to be connected in parallel with the opposite polarity to the LEDs 22a to 22d.
- one Zener diode 25 is provided on the substrate 21.
- the fifth wavelength conversion member WC5 of the second sub-light emitting unit SL2 includes a fifth wavelength conversion material (not shown) that converts the wavelength of light emitted from both the LED 22c and the LED 22d, and a second dummy that includes the fifth wavelength conversion material. And a sealing member 24b.
- the second dummy sealing member 24b can be made of the same sealing material as the third sealing member 23c and the fourth sealing member 23d, and the third sealing member 23c and the fourth sealing member 23d are externally visible. Is the same.
- the fifth wavelength conversion member WC5 (second dummy sealing member 24b) is linearly provided on the substrate 21 between the first sealing member 23a and the second sealing member 23b.
- the Zener diode 25 in the second sub light emitting unit SL2 is sealed by the second dummy sealing member 24b.
- the second dummy sealing member 24b may contain a non-light emitting semiconductor electronic component other than the Zener diode.
- the fourth main light emitting unit ML4 has the same configuration as the third main light emitting unit ML1.
- the fourth main light emitting unit ML4 includes a plurality of LEDs 22d (fourth light emitting elements) arranged in a row on the surface of the substrate 21, and a sixth wavelength that converts the wavelength of light emitted by the LEDs 22d. It consists of conversion member WC6. That is, the fourth main light emitting unit ML4 is a light emitting unit having its own light emitting element, like the third main light emitting unit ML3, and a plurality of LEDs 22d are present in the fourth wavelength conversion member WC4.
- the plurality of LEDs 22d are arranged in a straight line like the LEDs 22a, and the sixth wavelength conversion member WC6 is a substrate along the arrangement direction (column direction) of the plurality of LEDs 22d. It is provided in a straight line on the surface of 21.
- the sixth wavelength conversion member WC6 includes a sixth wavelength conversion material (not shown) that converts the wavelength of light emitted from the LEDs 22d, and a fourth sealing member that includes the sixth wavelength conversion material and collectively seals the plurality of LEDs 22d. 23d.
- the fourth sealing member 23d is linearly provided on the surface of the substrate 21 so as to cover the plurality of LEDs 22d arranged linearly.
- the shape of the sixth wavelength conversion member WC6 in the cross section perpendicular to the longitudinal direction of the sixth wavelength conversion member WC6 (fourth sealing member 23d) is substantially semicircular.
- each of several LED22d is arrange
- the first wavelength conversion member WC1 (first sealing member 23a), the second wavelength conversion member WC2 (first dummy sealing member 24a), and the third wavelength conversion member WC3 (first).
- the six wavelength conversion members 23d) are provided in parallel. In the present embodiment, these wavelength conversion members are parallel to each other so that their longitudinal directions coincide.
- the second wavelength conversion member WC2 (first dummy sealing) disposed between the first wavelength conversion member WC1 (first sealing member 23a) and the third wavelength conversion member WC3 (second sealing member 23b).
- the member 24a) is preferably provided close to the first wavelength conversion member WC1 (first sealing member 23a) and the third wavelength conversion member WC3 (second sealing member 23b).
- a fifth wavelength conversion member WC5 (second dummy seal) disposed between the fourth wavelength conversion member WC4 (third sealing member 23c) and the sixth wavelength conversion member WC6 (fourth sealing member 23d).
- the stop member 24b) is preferably provided as close as possible so as not to contact the fourth wavelength conversion member WC4 (third sealing member 23c) and the sixth wavelength conversion member WC6 (fourth sealing member 23d).
- the three first wavelength conversion members WC1 to WC3 are provided at equal intervals.
- three fourth wavelength conversion members WC3 to WC6 are also provided at equal intervals.
- the substrate 21 is, for example, a ceramic substrate made of a ceramic material such as aluminum oxide (alumina) or aluminum nitride, a resin substrate, a glass substrate, a flexible substrate, or a resin-coated metal substrate (metal base substrate).
- the substrate 21 is a rectangular mounting substrate (LED mounting substrate) for mounting the LEDs 22a, 22b, and 32.
- the substrate 21 has a low light transmittance with respect to the light emitted from the LEDs 22a to 22d.
- the substrate 21 can be composed of a white substrate such as a white alumina substrate having a total transmittance of 10% or less, or a metal substrate.
- the substrate 21 has a light reflectance of 50% or more with respect to the light emitted from the LEDs 22a to 22d, and is a substrate mainly composed of any one of Al 2 O 3 (alumina), MgO, SiO, and TiO 2.
- a substrate having a low light transmittance as the substrate 21 it is possible to suppress light transmitted through the substrate 21 and emitted from the back surface side, and color unevenness can be suppressed. Moreover, cost reduction can be realized by using an inexpensive white substrate.
- a translucent substrate having a high light transmittance can be used as the substrate 21.
- the substrate 21 may be a substrate having a total transmittance of 80% or more for visible light, or a substrate that is transparent to visible light, that is, in a state where the transmittance is extremely high and the other side can be seen through.
- a translucent substrate a translucent ceramic substrate made of polycrystalline alumina or aluminum nitride, a transparent glass substrate made of glass, a crystal substrate made of crystal, a sapphire substrate made of sapphire, or a transparent resin material made of transparent resin material A resin substrate or the like can be used.
- the light-transmitting substrate having a high light transmittance as the substrate 21, even when the LED chip is mounted on only one of the front surface and the back surface of the substrate 21, the light emitted from the LED chip passes through the substrate 21. Since the light is transmitted, light can be emitted from the surface where the LED chip is not mounted.
- one through hole 21 a that penetrates the substrate 21 is provided in the central portion of the substrate 21, one through hole 21 a that penetrates the substrate 21 is provided.
- This through-hole 21a is for fixing the LED module 20 to the support
- the through hole 21a and the protrusion 42b have a rectangular shape in plan view, and function as a position restricting portion for determining the position and orientation of the substrate 21.
- the through hole 21a may not be provided.
- two through holes 21 b that penetrate the substrate 21 are provided at both ends of the substrate 21 in the long side direction. These two through holes 21b constitute a terminal 28 for connecting the lead wire 70 for power feeding and the LED module 20.
- the LEDs 22a to 22d are semiconductor light emitting elements that emit light with a predetermined power.
- a plurality of LEDs 22a to 22d are mounted on the surface (first surface) of the substrate 21, respectively.
- the plurality of LEDs 22a to 22d are arranged at the same pitch in the long side direction of the substrate 21, respectively.
- the plurality of LEDs 22a to 22d are connected in series in each element row, and are connected in parallel in the element rows.
- the same LEDs 22a to 22d are used, for example, blue LED chips that emit blue light when energized.
- 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.
- FIG. 5 is an enlarged cross-sectional view around the LED (LED chip) in the LED module 20 of the light bulb shaped lamp 1 according to Embodiment 1 of the present invention.
- the periphery of the LED 22a is shown, but the periphery of the LEDs 22b to 22d has the same configuration.
- the LED 22 a includes a sapphire substrate 122 a and a plurality of nitride semiconductor layers 122 b that are stacked on the sapphire substrate 122 a and have different compositions.
- a cathode electrode 122c and an anode electrode 122d are provided at both ends of the upper surface of the nitride semiconductor layer 122b.
- a wire bond portion 122e is provided on the cathode electrode 122c, and a wire bond portion 122f is provided on the anode electrode 122d.
- the cathode electrode 122c of one LED 22a and the anode electrode 122d of the other LED 22a are connected by a wire 27 via wire bond portions 122e and 122f.
- the LED 22a is fixed on the substrate 21 with a translucent chip bonding material 122g so that the surface on the sapphire substrate 122a side faces the front surface or the back surface of the substrate 21.
- a translucent chip bonding material 122g a silicone resin containing a filler composed of metal oxide can be used.
- the first sealing member 23a, the second sealing member 23b, the third sealing member 23c, and the fourth sealing member 23d seal each element row of the LEDs 22a to 22d and seal the metal wiring 26. Yes.
- the first dummy sealing member 24a does not seal the LED and the metal wiring.
- the second dummy sealing member 24b does not seal the LED, but seals the Zener diode 25 and the metal wiring 26.
- the first sealing member 23a is made of an insulating resin material containing phosphor particles as the first wavelength conversion material.
- the second sealing member 23b is made of an insulating resin material containing phosphor particles as the third wavelength conversion material
- the third sealing member 23c contains phosphor particles as the fourth wavelength conversion material.
- the fourth sealing member 23d is made of an insulating resin material containing phosphor particles as a sixth wavelength conversion material.
- the first dummy sealing member 24a is made of an insulating resin material containing phosphor particles as the second wavelength conversion material.
- the second dummy sealing member 24b is made of an insulating resin material containing phosphor particles as a fifth wavelength conversion material.
- the phosphor particles in the first sealing member 23a to the fourth sealing member 23d and the first dummy sealing member 24a to the second dummy sealing member 24b are excited by the light emitted from the LEDs 22a to 22d. Emits light of a desired color (wavelength).
- the first sealing member 23a, the second sealing member 23b, the third sealing member 23c, the fourth sealing member 23d, the first dummy sealing member 24a, and the second dummy sealing member 24b are All have the same configuration, and are configured by the same phosphor particles and the same sealing resin material.
- the phosphor particles when the LEDs 22a to 22d are blue LED chips that emit blue light, phosphor particles that convert the wavelength of the blue light into yellow light are used in order to emit white light from each sealing member.
- YAG (yttrium / aluminum / garnet) yellow phosphor particles can be used as the phosphor particles.
- part of the blue light emitted from the LEDs 22a to 22d is wavelength-converted to yellow light by the yellow phosphor particles contained in each sealing member. That is, the yellow phosphor particles emit fluorescent light using blue light as excitation light.
- the blue light which was not absorbed by the yellow phosphor particles (the wavelength was not converted) and the yellow light which was wavelength-converted by the yellow phosphor particles were diffused and mixed in each sealing member. The white light is emitted from each sealing member.
- Each sealing member configured in this way can be formed, for example, by applying and curing an uncured paste-like sealing member material containing a wavelength converting material by a dispenser.
- a transparent resin material such as a silicone resin or an organic material such as a fluorine-based resin can be used.
- body-containing resin is used as the first sealing member 23a to the fourth sealing member 23d and the first dummy sealing member 24a to the second dummy sealing member 24b.
- an inorganic material such as low-melting glass or sol-gel glass can be used in addition to the resin.
- a light diffusing material such as silica particles may be dispersed in each sealing member.
- the metal wiring 26 is a conductive wiring through which an electric current for emitting light from the LED flows, and is patterned in a predetermined shape on the surface (first surface) of the substrate 21.
- a plurality of metal wirings 26 are formed in order to connect a plurality of LEDs 22a, a plurality of LEDs 22b, a plurality of LEDs 22c, and a plurality of LEDs 22d in series. It is formed in an island shape between adjacent LEDs. Further, the metal wiring 26 is patterned in a predetermined shape at both ends of the substrate 21 in order to connect the element rows of the LEDs 22a to 22d in parallel.
- the metal wiring 26 is patterned in a predetermined shape so that the Zener diode 25 is connected in parallel with the opposite polarity to the LEDs 22a to 22d.
- the metal wiring 26 is simultaneously patterned using the same metal material.
- a metal material of the metal wiring 26 for example, silver (Ag), tungsten (W), copper (Cu), or the like can be used.
- the surface of the metal wiring 26 may be plated with nickel (Ni) / gold (Au) or the like.
- the metal wiring 26 may be comprised by the different metal material, and may be formed in a separate process.
- the metal wiring 26 exposed from the sealing member of each wavelength conversion member is 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, except for the terminals 28. Is preferred. Thereby, the insulation in the LED module 20 can be improved.
- the wire 27 is an electric wire for connecting the LEDs 22a to 22d and the metal wiring 26, and the Zener diode 25 and the metal wiring 26, and is, for example, a gold wire. As described with reference to FIG. 5, the wire 27 bonds the wire bonds 122 e and 122 f provided on the upper surface of the LED 22 a to the metal wiring 26 formed adjacent to both sides of the LED 22 a.
- the entire wire 27 is embedded in the sealing member so as not to be exposed from the sealing member of each wavelength conversion member.
- the terminal 28 is an external connection electrode that is soldered to the lead wire 70, and is a connection land formed in a predetermined shape on the surface of the substrate 21 so as to surround the through hole 21b.
- the terminal 28 is formed integrally with the metal wiring 26, and is patterned simultaneously with the metal wiring 26 using the same metal material as the metal wiring 26.
- the terminal 28 is a power supply unit of the LED module 20 and receives power from the outside of the LED module 20 in order to cause the LEDs 22a to 22d to emit light, and receives the received power via the metal wiring 26 and the wires 27. To 22d.
- FIG. 6 is a diagram showing a configuration around the LED module in the light bulb shaped lamp 1 according to the present embodiment.
- 6A is a plan view when the LED module 20 is viewed from above in the light bulb shaped lamp 1 with the globe 10 removed
- FIG. 6B is a cross-sectional view of FIG.
- FIG. 4C is a cross-sectional view of the light bulb shaped lamp 1 taken along line X ′
- FIG. 4C is a cross-sectional view of the light bulb shaped lamp 1 taken along line YY ′ of FIG.
- the protruding portion 42 b of the support column 40 is fitted in the through hole 21 a of the substrate 21.
- the LED module 20 is fixed to the support column 40 in a state where the position and orientation of the substrate 21 are regulated.
- the LED module 20 and the lead wire 70 are electrically and physically connected by a conductive adhesive member 29.
- the conductive adhesive member 29 is a conductive adhesive such as solder or silver paste that connects the terminal 28 to the lead wire 70.
- the conductive adhesive member 29 is provided in contact with both the terminal 28 and the lead wire 70 so as to cover the side surface of one end of the lead wire 70 on the surface of the terminal 28.
- the conductive adhesive member 29 is provided so as to close the opening on the surface side of the substrate 21 of the through hole 21b.
- the conductive adhesive member 29 may be covered with an insulating resin.
- the insulating resin may be a white resin having a low light transmittance with respect to light emitted from the LEDs 22a to 22d, for example, 10% or less.
- the LED module 20 is connected to the two lead wires 70 by the conductive adhesive member 29.
- the electrical connection between the lead wire 70 and the terminal 28 is first arranged such that the lead wire 70 is inserted from the opening on the back surface side of the through hole 21b and protrudes from the opening on the front surface side of the through hole 21b.
- a conductive adhesive member 29 is provided so as to be in contact with both the surface side portion of the lead wire 70 and the terminal 28.
- the tip of the lead wire 70 is provided so as to be exposed from the surface of the conductive adhesive member 29, but may be completely covered with the conductive adhesive member 29. In this case, since the contact area between the lead wire 70 and the conductive adhesive member 29 increases, the connection between the two can be strengthened.
- FIG. 7 is a diagram for explaining the function and effect of the LED module 20 in the light bulb shaped lamp 1 according to Embodiment 1 of the present invention.
- FIG. 7A is a partially enlarged sectional view of the LED module 200 of Comparative Example 1.
- FIG. (B) is a partially enlarged sectional view of the LED module 201 of Comparative Example 2, and (c) is a partially enlarged sectional view of the LED module 20 in the first embodiment.
- the LED module 200 of the comparative example 1 is the 1st sealing member 23a (phosphor containing resin) which seals LED22a, and the 2nd sealing member 23b which seals LED22b ( (Phosphor-containing resin) are adjacent to each other, and the first dummy sealing member 24a is not formed as in the present embodiment.
- the distance between the first sealing member 23a and the second sealing member 23b is increased.
- a region (non-light emitting portion) where the first sealing member 23a and the second sealing member 23b are not formed becomes large, and the first sealing member 23a and the second sealing member 23b are formed on the substrate 21.
- the brightness difference between the region (light emitting portion) thus formed and the region (non-light emitting portion) where the first sealing member 23a and the second sealing member 23b are not formed becomes conspicuous and appears as luminance unevenness.
- the sealing member 23A is formed so that the planar view shape of the sealing member 23A is rectangular.
- the LED module 20 in the present embodiment shown in FIG. 7C includes a first sealing member 23a (first main light emitting unit ML1) and a second sealing member 23b (second main light emitting unit).
- ML2 is provided with a first dummy sealing member 24a (first sub light emitting unit SL1).
- the light emitted from the LED 22a in the first main light emitting unit ML1 excites the phosphor particles of the first sealing member 23a (first wavelength conversion member WC1) covering itself, and the first sealing member The phosphor particles of the first dummy sealing member 24a (second wavelength conversion member WC2) adjacent to 23a are also excited.
- the light emitted from the LED 22b in the second main light emitting unit ML2 excites the phosphor particles of the second sealing member 23b (third wavelength conversion member WC3) covering itself, and the second sealing member The phosphor particles of the first dummy sealing member 24a (second wavelength conversion member WC2) adjacent to 23b are also excited.
- the LEDs 22a and 22b are both blue LED chips that emit blue light, and the phosphor particles in the first sealing member 23a, the second sealing member 23b, and the first dummy sealing member 24a.
- (Wavelength conversion material) are all yellow phosphor particles. Therefore, from the first main light emitting unit ML1 (first sealing member 23a), the second main light emitting unit ML2 (second sealing member 23b) and the first sub light emitting unit SL1 (first dummy sealing member 24a), White light which is a mixed light of yellow light whose wavelength is converted by the yellow phosphor particles and blue light which is not wavelength-converted by the yellow phosphor particles is emitted.
- the first sealing member 23a and the second sealing member 23b emit light but also the first dummy sealing member 24a emits light. That is, the first dummy sealing member 24a can function as a pseudo light emitting unit.
- the first sealing member 23a, the second sealing member 23b, and the first dummy sealing member 24a function as a light emitting unit, so that the contrast of the substrate 21 with respect to the configuration of FIG. It is possible to suppress the luminance unevenness.
- the cross-sectional shape of each of the three sealing members is a dome-shaped cross-section (substantially semicircular). It is possible to suppress total reflection at the interface between the sealing member and the air layer when light is emitted from the sealing member to the outside. Therefore, in the LED module 20 in the present embodiment, the light extraction efficiency does not decrease as shown in FIG.
- the light bulb shaped lamp 1 in the present embodiment uses the LED module 20 shown in FIG. 7C as a light source, it is possible to realize a light bulb shaped lamp with little luminance unevenness in the light source.
- the concentration of the phosphor particles (second wavelength conversion material) in the first dummy sealing member 24a and the phosphor particles (first wavelength conversion material) in the first sealing member 23a. ) And / or the concentration of the phosphor particles (third wavelength conversion material) in the second sealing member 23b can be adjusted.
- concentration of the fluorescent substance particle in the 1st dummy sealing member 24a is below the density
- the central first dummy sealing member 24a Since the light enters from both the LEDs of the first sealing member 23a and the second sealing member 23b formed on both sides, the white light emitted from the first dummy sealing member 24a The light is more yellowish (white is stronger) than the white light emitted from the first sealing member 23a and the second sealing member 23b. As a result, color unevenness occurs between the first dummy sealing member 24a and the first sealing member 23a and the second sealing member 23b.
- the first dummy sealing member 24a is formed by making the concentration of the phosphor particles in the first dummy sealing member 24a smaller than the concentration of the phosphor particles in the first sealing member 23a and the second sealing member 23b. Can be made smaller than the wavelength conversion efficiency of the first sealing member 23a and the second sealing member 23b. Accordingly, yellow light generated by the first dummy sealing member 24a can be suppressed, and thus light emitted from the first dummy sealing member 24a can be made closer to white. As a result, color unevenness between the first dummy sealing member 24a and the first sealing member 23a and the second sealing member 23b can be suppressed.
- the concentration of the phosphor particles in the first dummy sealing member 24a can be 15% to 40% of the concentration of the phosphor particles in the first sealing member 23a and the second sealing member 23b.
- suppression of color unevenness (color adjustment) in the first sealing member 23a, the second sealing member 23b, and the first dummy sealing member 24a does not adjust the concentration of the phosphor particles in each sealing member. It is also possible to adjust the height of each sealing member.
- the phosphor particles in the first sealing member 23a, the second sealing member 23b, and the first dummy sealing member 24a have the same concentration, and the height of the first dummy sealing member 24a is set to the first sealing member.
- the wavelength conversion efficiency in the first dummy sealing member 24a can be reduced. Thereby, the yellow light produced
- color unevenness between the first dummy sealing member 24a and the first sealing member 23a and the second sealing member 23b can be suppressed.
- the first sealing member 23a and the second sealing member 23b can also be adjusted by adjusting the length of each of the first sealing member 23a, the second sealing member 23b, and the first dummy sealing member 24a.
- color adjustment (suppression of color unevenness) in the first dummy sealing member 24a can be performed.
- the phosphor particles in the first sealing member 23a, the second sealing member 23b, and the first dummy sealing member 24a have the same concentration, and the length of the first dummy sealing member 24a is set to the first sealing member.
- the length By setting the length to be equal to or less than the length of the member 23a and the second sealing member 23b, color unevenness between the first dummy sealing member 24a and the first sealing member 23a and the second sealing member 23b can be suppressed. it can.
- the first main light emitting unit ML1 (first sealing member 23a), the second main light emitting unit ML2 (second sealing member 23b), and the first sub light emitting unit SL1 (first dummy).
- the sealing member 24a has been described, the third main light emitting unit ML3 (third sealing member 23c), the fourth main light emitting unit ML4 (fourth sealing member 23d), and the second sub light emitting unit SL2 (second dummy). The same applies to the sealing member 24b).
- the first sub light emitting unit SL1 (the first sub light emitting unit SL1 (the first sealing member 23a) and the second main light emitting unit ML2 (the second sealing member 23b) are disposed between the first main light emitting unit ML1 (the first sealing member 23a) and the second main light emitting unit ML2 (the second sealing member 23b).
- the first dummy sealing member 24a is present has been described, only one of the first main light emitting unit ML1 (first sealing member 23a) and the second main light emitting unit ML2 (second sealing member 23b) is described. And the first sub-light emitting unit SL1 (first dummy sealing member 24a) can be applied.
- the present invention can also be applied to the case where only one main light emitting unit and one sub light emitting unit are adjacent to each other. In this way, by making the sub-light-emitting portion adjacent to the main light-emitting portion, it is possible to suppress the difference in brightness on the substrate.
- FIG. 8A is a plan view of LED module 20A in Modification 1 of Embodiment 1 of the present invention.
- the LED module 20A in the present modification has a configuration in which a third sub-light emitting unit SL3 is further provided with respect to the LED module 20 shown in FIG.
- 3rd sub light emission part SL3 consists of 7th wavelength conversion member WC7 which converts the wavelength of the light which LED22b in 2nd main light emission part ML2 and LED22c in 3rd main light emission part ML3 emit. That is, the third sub-light-emitting unit SL3 is a light-emitting unit that emits light from an LED outside the third sub-light-emitting unit SL3 without having an LED, like the first sub-light-emitting unit SL1, In the seven-wavelength conversion member WC7, there is no light emitting element that emits light whose wavelength is converted by the seventh wavelength conversion member WC7. In the present modification, the third sub light emitting unit SL3 is configured by only the seventh wavelength conversion member WC7.
- the seventh wavelength conversion member WC7 includes a seventh wavelength conversion material (not shown) that converts the wavelength of light emitted from both the LED 22b and the LED 22c, and a third dummy sealing member 24c that includes the seventh wavelength conversion material.
- the third dummy sealing member 24c can be made of the same sealing material as the first dummy sealing member 24a and the second dummy sealing member 24b, and the first dummy sealing member 24a and the second dummy are also in appearance. It is the same as the sealing member 24b.
- the third dummy sealing member 24c (seventh wavelength conversion member WC7) includes the second sealing member 23b (third wavelength conversion member WC3) and the third sealing member 23c (fourth wavelength conversion member WC4). ) In a straight line on the substrate 21. That is, in the present modification, in the LED module 20 shown in FIG. 4, a third dummy is used as the third sub light emitting unit SL3 so as to fill the space between the second sealing member 23b and the third sealing member 23c. A sealing member 24c is provided.
- the third dummy is interposed between the second sealing member 23b (second main light emitting unit ML2) and the third sealing member 23c (third main light emitting unit ML3).
- a sealing member 24c (third sub light emitting unit SL3) is provided.
- a pseudo light emission part can be produced
- color unevenness can be suppressed by adjusting the concentration of the phosphor particles of each sealing member or adjusting the height of each sealing member.
- FIG. 8B is a plan view of LED module 20B in Modification 2 of Embodiment 1 of the present invention.
- the LED module 20B in the present modification has a configuration in which a fourth sub-light emitting unit SL4 is further provided to the LED module 20 shown in FIG.
- each fourth sub light emitting portion SL4 has both ends in the longitudinal direction (longitudinal direction) of the first main light emitting portion ML1 to the fourth main light emitting portion ML4.
- an eighth wavelength conversion member WC8 that converts the wavelength of light emitted by the LEDs 22a to 22d.
- the fourth sub-light-emitting unit SL4 is a light-emitting unit that emits light by the light from the LED outside the fourth sub-light-emitting unit SL4 without having an LED, like the first sub-light-emitting unit SL1,
- the 8-wavelength conversion member WC8 there is no light emitting element that emits light whose wavelength is converted by the eighth wavelength conversion member WC8.
- the fourth sub light emitting unit SL4 is configured only by the eighth wavelength conversion member WC8.
- the eighth wavelength conversion member WC8 includes an eighth wavelength conversion material (not shown) for converting the wavelength of light emitted from the LEDs 22a to 22d, and a fourth dummy sealing member 24d including the eighth wavelength conversion material.
- the fourth dummy sealing member 24d can be made of the same sealing material as the first dummy sealing member 24a, and is the same as the first dummy sealing member 24a in appearance.
- the four fourth dummy sealing members 24d are arranged so as to sandwich the first sealing member 23a to the fourth sealing member 23d from the longitudinal direction thereof.
- the stop member 23a to the fourth sealing member 23d are provided on both sides.
- the four fourth dummy sealing members 24d are provided such that the longitudinal direction thereof is substantially orthogonal to the longitudinal directions of the first sealing member 23a to the fourth sealing member 23d. That is, in this modification, in the LED module 20 shown in FIG. 4, the fourth sub-light emitting unit SL4 is formed by filling the space on both sides in the longitudinal direction of the first sealing member 23a to the fourth sealing member 23d.
- a fourth dummy sealing member 24d is provided.
- the first sealing member 23a (first main light emitting unit ML1) to the fourth sealing member 23d (fourth main light emitting unit ML4) are arranged on both sides in the longitudinal direction.
- a fourth dummy sealing member 24d (fourth sub-light emitting unit SL4) is provided.
- the pseudo light-emitting portions are also generated in the regions on both sides in the longitudinal direction from the first sealing member 23a (first main light emitting portion ML1) to the fourth sealing member 23d (fourth main light emitting portion ML4).
- the brightness difference in the substrate 21 can be further suppressed, and luminance unevenness can be further suppressed.
- this modification can also be applied to the LED module 20A in FIG. 8A. Also in this modification, color unevenness can be suppressed by adjusting the concentration of the phosphor particles of each sealing member or adjusting the height of each sealing member.
- FIG. 9 is a top view when the LED module is viewed from above in a state where the globe is removed in the light bulb shaped lamp according to this modification
- FIG. 9 is an X of (a).
- FIG. 9C is a cross-sectional view of the light bulb shaped lamp taken along the line -X ′
- FIG. 9C is a cross sectional view of the light bulb shaped lamp taken along the line YY ′ of FIG. 9A
- FIG. 2 is a cross-sectional view of the same light bulb shaped lamp taken along line ZZ ′ in FIG.
- a light emitting element and a sealing member are also formed on the back surface (second surface) of the substrate 21 with respect to the LED module 20 shown in FIG.
- a main LED module (first light emitting module) 20a that emits light toward the outside and a sub LED module (second light emitting module) 20b that emits light mainly toward the rear and side are provided.
- the main LED module (main light emitting module) 20a includes a substrate 21, a plurality of LEDs 22a to 22d, and a first sealing member 23a to a fourth sealing member 23d.
- the sub LED module (sub light emitting module) 20b includes a substrate 21, a plurality of LEDs 32a (fifth light emitting element) and a plurality of LEDs 32b (sixth light emitting element) provided on the back surface (second surface) of the substrate 21. ), A phosphor particle (9th wavelength conversion material) and a fifth sealing member 33a (9th wavelength conversion member) that collectively seals the plurality of LEDs 32a, and phosphor particles (10th wavelength conversion material) A sixth dummy sealing member 34a (tenth wavelength converting member) adjacent to the fifth sealing member 33a and a phosphor particle (eleventh wavelength converting material) and simultaneously sealing a plurality of LEDs 32b.
- a sealing member 33b (an eleventh wavelength conversion member), a sixth dummy sealing member 34b (a twelfth wavelength conversion member) that includes phosphor particles (a twelfth wavelength conversion material) and is adjacent to the sixth sealing member 33b; ,Money The wiring 36, and a wire 37, a terminal 38, and a conductive adhesive member 39.
- one LED module includes one substrate 21, a plurality of LEDs mounted on each of the front and back surfaces of the substrate 21, a sealing member that collectively seals each LED row, and dummy sealing. It is comprised with a member. That is, the board 21 is a board common to the main LED module 20a and the sub LED module 20b.
- the configuration of the main LED module 20a is the same as that of the LED module 20 shown in FIG.
- the plurality of LEDs 32 a and 32 b on the back side are arranged at the same pitch in the long side direction of the substrate 21.
- the plurality of LEDs 32a and 32b are connected in series in each element row, and are connected in parallel in the element rows.
- the LEDs 32a and 32b on the back side are arranged so as to face the LEDs 22a and 23d on the front side with the substrate 21 in between.
- the LEDs 32a and 32b in the present modification are blue LED chips, similar to the LEDs 22a to 22d.
- the fifth sealing member 33a and the sixth sealing member 33b on the back surface side are formed in a straight line so as to face the first sealing member 23a and the fourth sealing member 23d with the substrate 21 interposed therebetween.
- the fifth sealing member 33a and the sixth sealing member 33b have the same configuration as the first sealing member 23a to the fourth sealing member 23d, collectively seal each element row of the LEDs 32a and 32b, and metal wiring. 36 is sealed.
- the fifth sealing member 33a and the sixth sealing member 33b are similar to the first sealing member 23a to the fourth sealing member 23d, and are fluorescent materials in which predetermined phosphor particles are dispersed in a silicone resin. Body-containing resin is used.
- the fifth dummy sealing member 34a and the sixth dummy sealing member 34b on the back surface side are formed in a straight line so as to face the first dummy sealing member 24a and the second dummy sealing member 24b with the substrate 21 therebetween.
- the fifth dummy sealing member 34a and the sixth dummy sealing member 34b have the same configuration as the first dummy sealing member 24a, and do not have LEDs themselves but emit light by light from external LEDs. It is.
- the fifth dummy sealing member 34a is a silicone resin (phosphor-containing resin) including phosphor particles (wavelength conversion material) that converts the wavelength of light emitted from the LED 32a.
- the sixth dummy sealing member 34b is a silicone resin (phosphor-containing resin) containing phosphor particles (wavelength conversion material) that converts the wavelength of light emitted from the LED 32b.
- the metal wiring 36, the wire 37, the terminal 38, and the conductive adhesive member 39 have the same configuration as the metal wiring 26, the wire 27, the terminal 28, and the conductive adhesive member 29. To do.
- the sealing member (light emitting part) including the LEDs is formed not only on the front surface of the substrate 21 but also on the back surface of the substrate 21. Light can also be emitted to the side. Thereby, a light distribution characteristic with a wide light distribution angle can be realized, and a light bulb shaped LED lamp having a light distribution characteristic more similar to an incandescent light bulb can be realized.
- the fifth dummy sealing member 34a and the sixth dummy are adjacent to the main light emitting portions (LEDs 32a and 32b and the fifth and sixth sealing members 33a and 33b) provided on the back side of the substrate 21.
- a sealing member 34b is provided.
- the pseudo light emitting unit can be generated adjacent to the fifth sealing member 33 a and the sixth sealing member 33 b.
- the brightness difference can be suppressed not only on the front surface side of the substrate 21 but also on the back surface side, and luminance unevenness on the back surface side of the substrate 21 can be suppressed.
- each sealing member is provided in the fifth sealing member 33a and the fifth dummy sealing member 34a, and in the sixth sealing member 33b and the sixth dummy sealing member 34b. Color unevenness can be suppressed by adjusting the concentration of body particles or adjusting the height of each sealing member.
- FIG. 10C is a cross-sectional view of the same light bulb shaped lamp taken along line ⁇ X ′
- FIG. 10C is a cross sectional view of the same light bulb shaped lamp taken along line YY ′ of FIG. 10A
- FIG. 2 is a cross-sectional view of the same light bulb shaped lamp taken along line ZZ ′ in FIG.
- the light bulb shaped lamp in the above-mentioned modified example 3 comprises two main LED modules 20a and sub LED modules 20b by providing a light source and wiring for emitting light on both the front surface and the back surface of one substrate 21. Light was extracted from the top of the globe and the base of the lamp.
- a light emitting element and wiring for emitting light are individually provided on the surfaces of two separate substrates, and the back surfaces of the two substrates are bonded to form one substrate 21. With this configuration as well, light can be extracted to the globe top side and the base side of the light bulb shaped lamp 1.
- the light bulb shaped lamp 1 according to this modification is the above-described embodiment in that the substrate 21 of the LED module is configured by bonding two substrates each having a light emitting element and a wiring for emitting light on the surface thereof with an adhesive. Different from the bulb-type lamp 1 of the first embodiment. Hereinafter, the difference from the light bulb shaped lamp 1 of the first embodiment will be described in detail.
- the LED module 20D in the present modified example is similar to the LED module 20C in the modified example 3 in that the main LED module (first light emitting module) 20a that mainly emits light toward the front and sides, and the rear and sides mainly.
- the LED module 20D in the present modification example is different from the modification example 3 in that the substrate 21 is a main substrate 21X (first substrate). And a substrate 21Y (second substrate) which is a sub-substrate.
- the main LED module 20a includes a substrate 21X (first substrate), a plurality of LEDs 22a to 22d provided on the surface of the substrate 21X, and the surface of the substrate 21X.
- the main LED module 20a includes a Zener diode 25 (not shown), a metal wiring 26, a wire 27, a terminal 28, and a conductive adhesive member 29 provided on the substrate 21X.
- the sub LED module (sub light emitting module) 20b includes a substrate 21Y, a plurality of LEDs 32a and 32b provided on the surface of the substrate 21Y, a fifth sealing member 33a and a fifth sealing member 33a provided on the surface of the substrate 21Y.
- the substrates 21 ⁇ / b> X and 21 ⁇ / b> Y have the same configuration and shape as each other, and the back surfaces of the substrates 21 are bonded by an adhesive 90 to form one substrate 21.
- the substrates 21X and 21Y the same substrates as those described above can be used.
- the through hole 21Xb constitutes a terminal 28 for connecting the lead wire 70 for power feeding and the main LED module 20a
- the through hole 21Yb is for connecting the lead wire 70 for power feeding and the sub LED module 20b.
- a terminal 38 is configured.
- the through holes 21 ⁇ / b> Xb and 21 ⁇ / b> Yb are arranged so as to be continuous to form the through hole 21 b of the substrate 21. Accordingly, one lead wire 70 is inserted through one continuous through hole 21Xb, 21Yb.
- One through hole 21Xa penetrating the substrate 21X is provided in the central part of the substrate 21X, and one through hole 21Ya penetrating the substrate 21Y is also provided in the central part of the substrate 21Y.
- the through holes 21 ⁇ / b> Xa and 21 ⁇ / b> Ya are for fixing the main LED module 20 a and the sub LED module 20 b to the support column 40, and are arranged so as to form one through hole 21 a of the substrate 21. Therefore, the protrusion 42b of the support column 40 is fitted with the continuous through holes 21Xa and 21Ya.
- the through hole 21a and the protrusion 42b function as a position restricting portion for determining the position and orientation of the substrate 21 as described above.
- the adhesive 90 is provided between the back surface of the substrate 21X and the back surface of the substrate 21Y and adheres both, and is made of, for example, a resin such as a silicone resin or a metal paste such as an Ag paste.
- a resin such as a silicone resin
- a metal paste such as an Ag paste.
- the thermal conductivity between the substrate 21X and the substrate 21Y is increased and the thermal conductivity as the substrate 21 is increased, so that the heat dissipation efficiency of the substrate 21 can be increased.
- the light shielding property of the adhesive 90 that is, the light shielding property of the substrate 21 can be improved, color unevenness due to light traveling from the front surface to the back surface of the substrates 21X and 21Y can be suppressed.
- the adhesive 90 is at least part of the space between the through holes 21Xb and 21Yb between the back surface of the substrate 21X and the back surface of the substrate 21Y so that the lead wire 70 does not interfere with the insertion of the through holes 21Xb and 21Yb. Is not provided. Further, the adhesive 90 does not interfere with the fitting between the through holes 21Xa and 21Ya and the protrusions of the support column 40, and between the through holes 21Xa and 21Ya between the back surface of the substrate 21X and the back surface of the substrate 21Y. It is not provided in all of the spaces.
- LED module 20D in this modification the same effect as modification 3 can be produced. That is, a light bulb shaped LED lamp having a light distribution characteristic with a wide light distribution angle can be realized.
- the brightness difference can be suppressed not only on the front surface side of the substrate 21 but also on the back surface side, and luminance unevenness on the back surface side of the substrate 21 can be suppressed.
- each sealing member is provided in the fifth sealing member 33a and the fifth dummy sealing member 34a, and in the sixth sealing member 33b and the sixth dummy sealing member 34b. Color unevenness can be suppressed by adjusting the concentration of body particles or adjusting the height of each sealing member.
- the substrate 21 is composed of a substrate 21X provided with LEDs on the surface and a substrate 21Y provided with LEDs on the surface. And the board
- the sub LED module 20 b may be bonded and fixed to the support column 40.
- the LED module 20D can be manufactured simply by preparing the separate substrates 21X and 21Y and providing each member individually on the respective surfaces and then bonding them, so that the LED module 20D can be easily manufactured. Can do. As a result, a light bulb shaped lamp that is easy to manufacture can be realized.
- the sub LED module 20b is directly attached to the support column 40, and heat generated by the sub LED module 20b is transferred to the support column 40.
- the main LED module 20a is indirectly attached to the support
- An adhesive 90 as a heat conducting member is provided between the main LED module 20a and the sub LED module 20b.
- the adhesive 90 is any one of a heat conductive resin, a ceramic paste, and a metal paste.
- the heat dissipation efficiency and light-shielding property of the substrate 21 can be improved, the light emission efficiency and lifetime of the LED are further suppressed, and color unevenness between the main LED module 20a and the sub LED module 20b is suppressed. Can do.
- the support column 40 may penetrate the through hole 21Yb of the substrate 21Y and contact the back surface of the substrate 21X. That is, the through hole 21Yb may be formed so as to fit the entire fixing portion 42 of the support column 40, and the fixing surface of the fixing portion 42 of the support column 40 and the back surface of the substrate 21X may be bonded together by the adhesive 90. Thereby, fixation to the support
- the main LED module 20a is bonded and fixed to the support column 40 to shorten the heat radiation path from the substrate 21X to the support column 40, and the inner wall of the through hole 21Yb of the substrate 21Y and the fixing portion 42 of the support column 40 are heated with grease or the like
- the heat dissipation path from the substrate 21Y to the support column 40 can be widened by making contact through the conductive member. As a result, it is possible to further suppress the decrease in the luminous efficiency and the lifetime of the LED.
- FIG. 11 is an external perspective view of a light bulb shaped lamp according to Embodiment 2 of the present invention.
- FIG. 12 is an exploded perspective view of the light bulb shaped lamp according to Embodiment 2 of the present invention.
- a light bulb shaped lamp 2 is a light bulb shaped LED lamp that is a substitute for a light bulb shaped fluorescent light or an incandescent light bulb, and includes a globe 210 and an LED as a light source. Power is supplied to the module 220, the support member 240 that supports the LED module 220, the casing 250 in which the drive circuit 270 is disposed, the metal member 260 that is disposed in the casing 250, and the LED module 220. A driving circuit 270 for receiving power and a base 280 for receiving power from the outside.
- the light bulb shaped lamp 2 further includes lead wires 270a to 270d, a ring-shaped coupling member 230, and a screw 290.
- the bulb-shaped lamp 2 includes an envelope made up of a globe 210, a casing 250 (outer casing 252), and a base 280. That is, the globe 210, the housing 250 (outer housing portion 252), and the base 280 are exposed to the outside, and the outer surfaces of each are exposed to the outside air. Moreover, the light bulb shaped lamp 2 in the present embodiment is configured to have a brightness equivalent to, for example, a 40 W type.
- FIG. 13 is a view showing one section of the light bulb shaped lamp 1 according to Embodiment 2 of the present invention.
- 14 is a diagram showing another cross section of the configuration of the light bulb shaped lamp 1 according to the second embodiment of the present invention, and shows a cross sectional view when the lamp shaft is rotated about 90 ° from the state of FIG. Show.
- the lamp axis is an axis that becomes a rotation center when the bulb lamp 2 is attached to the socket of the lighting device, and coincides with the rotation axis of the base 280.
- FIG. 13 and FIG. 14 only the cross-sectional portions of the respective constituent members are illustrated except for the circuit elements. In FIG. 14, the circuit elements are omitted.
- the globe 210 has the same configuration as the globe 10 in the first embodiment.
- the LED module 220 includes an LED (LED chip), and emits light when power is supplied to the LED via the lead wires 270a and 270b (light emitting device). ) And emits light of a predetermined wavelength.
- the LED module 220 is held hollow in the globe 210 by the support member 240.
- the LED module 220 is disposed inside the globe 210.
- the LED module 220 is preferably disposed at a spherical center position formed by the globe 210 (for example, inside the large diameter portion where the inner diameter of the globe 210 is large).
- the light distribution characteristic of the light bulb shaped lamp 2 becomes a light distribution characteristic similar to an incandescent light bulb using a conventional filament coil.
- the coupling member 230 is a member that couples the globe 210, the support member 240, and the metal member 260. As illustrated in FIG. 12, the coupling member 230 is configured in a ring shape so as to surround the periphery of the base 242 (small diameter portion 242 a) of the support member 240.
- the coupling member 230 can be molded by curing a fluid insulating resin (for example, silicon) poured into the gap between the outer peripheral surface of the base 242 of the support member 240 and the outer portion 252a of the outer casing 252.
- the coupling member 230 includes a vertical groove 230 a formed in an annular shape so that the opening 211 of the globe 210 is inserted, and a horizontal groove provided in the base 242 of the support member 240.
- the outer surface of the coupling member 230 is in contact with the inner surface of the outer casing portion 252 of the casing 250.
- the support member 240 is a member that supports the LED module 220 and is made of metal.
- the support member 240 (metal support column) is mainly configured by a support column 241 located inside the globe 10 and a pedestal 242 surrounded mainly by the housing 250 (outer housing unit 252).
- the support column 241 and the pedestal 242 are integrally formed of the same material.
- the support column 241 is a metal stem provided so as to extend from the vicinity of the opening 211 of the globe 210 toward the inside of the globe 210.
- the column 241 functions as a holding member that holds the LED module 220.
- One end of the column 241 is connected to the LED module 220, and the other end of the column 241 is connected to the pedestal 242.
- pillar 241 since the support
- FIG. The column 241 in the present embodiment is made of an aluminum alloy.
- pillar 241 is comprised with the metal material, the heat
- FIG. Thereby, the fall of the luminous efficiency and the lifetime of LED222 by a temperature rise can be suppressed.
- the support column 241 includes a main shaft portion 241a and a fixed portion 241b.
- the main shaft portion 241a is formed of a cylindrical body having a constant cross-sectional area, one end portion of the main shaft portion 241a is connected to the fixed portion 241b, and the other end portion of the main shaft portion 241a is connected to the base 242.
- the fixing part 241b has a fixing surface (upper surface) to be fixed to the base 221 of the LED module 220.
- the fixed surface is a contact surface between the fixed portion 241b (the support column 241) and the back surface of the base 221 (the LED module 220).
- the LED module 220 is placed on the fixed surface of the fixing portion 241b and bonded to the fixed surface with an adhesive or the like.
- the fixing portion 241b is provided with a protruding portion 241b1 protruding from the fixing surface.
- the protrusion 241b1 is configured to be fitted into a through hole 221a provided in the base 221 of the LED module 220.
- the protruding portion 241b1 functions as a position restricting portion that restricts the position of the LED module 220, and is configured to have a long plan view shape.
- the pedestal 242 is a member that supports the support column 241 and is configured to block the opening 211 of the globe 210 as shown in FIGS. 13 and 14.
- the pedestal 242 is made of a metal material.
- the pedestal 242 is made of an aluminum alloy like the support column 241. Thereby, the heat of the LED module 220 thermally conducted to the support 241 can be efficiently conducted to the base 242.
- the pedestal 242 is a cap-shaped member having a stepped portion, and includes a small-diameter portion 242a having a small diameter and a large-diameter portion 242b having a large diameter.
- a lateral groove part is formed along the circumferential direction of the small diameter part 242a.
- the coupling member 230 is disposed on the step portion of the pedestal 242 (above the large diameter portion 242b), and the flange 230b of the coupling member 230 and the lateral groove portion of the pedestal 242 are fitted, whereby the coupling member 230 is pedestal. 242 is fixed.
- the small diameter portion 242 a is a disk-shaped member configured to support the column 241 and close the opening 211 of the globe 210.
- the support column 241 is formed at the center of the small diameter portion 242a.
- the outer peripheral surface of the small diameter portion 242a and the inner peripheral surface of the coupling member 230 are in surface contact.
- the small diameter portion 242a is provided with two through holes 242a1 for inserting the lead wires 270a and 270b.
- the large diameter portion 242 b is configured in a substantially cylindrical shape, and the outer peripheral surface is in surface contact with the inner peripheral surface of the metal member 260. Thereby, the heat of the support member 240 (base 242) can be efficiently conducted to the metal member 260.
- the large diameter portion 242b is formed with four concave portions 242b1 as guide holes when caulking with the metal member 260.
- the casing 250 is an insulating case having an insulating property in which the drive circuit 270 is disposed on the inner side, and includes an inner casing portion (first casing portion) 251 and an outer casing portion (second casing portion) 252. It is constituted by.
- the casing 250 can be made of an insulating resin material, and can be resin-molded with polybutylene terephthalate (PBT), for example.
- the inner housing portion 251 is an internal member (circuit case) that is disposed so as to surround the drive circuit 270 and is not visible from the outside of the lamp.
- the inner housing portion 251 includes a circuit cap portion 251 a disposed so as to cover the drive circuit 270 and a circuit holder portion 251 b disposed so as to cover the periphery of the drive circuit 270.
- the circuit cap part 251a and the circuit holder part 251b are separated, and the circuit cap part 251a and the circuit holder part 251b are arranged in a non-contact state.
- the upper surface shape of the circuit cap portion 251a is configured to follow the inner surface shape of the base 242 of the support member 240. As a result, the circuit cap portion 251 a is fitted into the base 242 of the support member 240 and is fastened and fixed to the support member 240 by the screws 290.
- the circuit holder portion 251b is configured in a cylindrical shape.
- the end of the circuit holder 251b on the base side is connected to the outer casing 252.
- the circuit holder 251b and the outer casing 252 are integrally formed.
- a step portion on which the circuit board 271 of the drive circuit 270 is placed is formed at the globe side end of the circuit holder portion 251b.
- the outer casing 252 is an external member that is at least a part of the lamp envelope and is arranged so that it can be seen from the outside of the lamp. A region other than the portion covered with the base 280 on the outer peripheral surface of the outer casing 252 is exposed to the outside of the lamp.
- the outer housing portion 252 has an outer portion 252a exposed to the outside of the lamp, and a screwing portion 252b screwed to the base 280.
- the outer portion 252a is configured by a substantially cylindrical member having a diameter larger than that of the screwing portion 252b.
- the outer portion 252a is configured such that the diameter gradually decreases toward the base 280 side. That is, the inner peripheral surface and the outer peripheral surface of the outer portion 252a are inclined with respect to the lamp axis. Since the outer surface of the outer portion 252a is exposed to the atmosphere, the heat conducted to the housing 250 is radiated mainly from the outer surface of the outer portion 252a.
- the screwing portion 252b is configured by a substantially cylindrical member having a smaller diameter than the outer portion 252a.
- a base 280 is screwed into the screwing portion 252b. That is, the outer peripheral surface of the screwing portion 252b is configured to contact the inner peripheral surface of the base 280.
- the outer casing portion 252 (outer portion 252a) configured in this manner is configured to surround the inner casing portion 251, the metal member 260, the base 242 of the support member 240, and the coupling member 230.
- a predetermined gap is provided between the inner surface of the outer casing portion 252 (outer portion 252a) and the outer surface of the inner casing portion 251 (the circuit cap portion 251a and the circuit holder portion 251b).
- the outer casing portion 252 (outer portion 252a) and the metal member 260 are not in contact with each other, and as shown in FIG. 14, the inner surface of the outer casing portion 252 (outer portion 252a) A certain gap exists between the outer surface of the metal member 260.
- the metal member 260 is configured in a skirt shape so as to surround the inner casing portion 251 in the casing 250, and is disposed between the inner casing portion 251 and the outer casing portion 252. Thereby, the metal member 260 can be in a non-contact state with the drive circuit 270, and insulation of the drive circuit 270 can be ensured.
- the metal member 260 is made of a metal material and functions as a heat sink. Thereby, the heat generated from the LED module 220 and the drive circuit 270 can be efficiently radiated using the metal member 260. Specifically, the heat of the LED module 220 and the drive circuit 270 is propagated to the outer casing 252 via the inner casing 251 and the metal member 260, and is radiated from the outer casing 252 to the outside of the lamp. Can do.
- the metal material of the metal member 260 for example, Al, Ag, Au, Ni, Rh, Pd, an alloy composed of two or more of these, or an alloy of Cu and Ag can be considered. Since such a metal material has good thermal conductivity, the heat propagated to the metal member 260 can be efficiently propagated.
- the metal member 260 is in contact with the support member 240.
- the inner peripheral surface of the metal member 260 and the outer peripheral surface of the base 242 (large diameter portion 242b) of the support member 240 are in surface contact. Since both the metal member 260 and the support member 240 are made of metal, the heat of the LED module 220 that has been conducted to the support member 240 is efficiently conducted to the metal member 260.
- the metal member 260 in the present embodiment is not in contact with the outer casing 252 (the outer shell 252a and the screwing portion 252b) in the casing 250, and the inner casing 251 (the circuit cap 251a, the circuit). It is not in contact with the holder part 251b). That is, the metal member 260 is arranged in a non-contact state in both the inner housing part 251 and the outer housing part 252. Thereby, sufficient insulation can be secured for the entire housing 250.
- the drive circuit (circuit unit) 270 includes a lighting circuit (power circuit) for lighting (emitting) the LEDs 222 of the LED module 220 and supplies predetermined power to the LED module 220.
- the drive circuit 270 includes a circuit that converts AC power supplied from the base 280 via the pair of lead wires 270c and 270d into DC power, and the DC power is converted into LED power via the pair of lead wires 270a and 270b. Supply to module 220.
- the drive circuit 270 also has a dimming circuit for controlling the dimming of the LED 222. That is, the drive circuit 270 controls dimming of the LED 222 by changing the magnitude of the current supplied to the LED 222.
- the drive circuit 270 includes a circuit board 271 and a plurality of circuit elements (electronic components) 272 mounted on the circuit board 271.
- the circuit board 271 is a printed board on which metal wiring is patterned, and electrically connects a plurality of circuit elements 272 mounted on the circuit board 271.
- the circuit board 271 is arranged in a posture in which the main surface is orthogonal to the lamp axis. As shown in FIG. 14, the circuit board 271 is placed and clamped on the circuit holder part 251 b of the inner housing part 251.
- the circuit element 272 is, for example, various capacitors, resistor elements, rectifier circuit elements, coil elements, choke coils (choke transformers), noise filters, diodes, integrated circuit elements, or the like.
- the drive circuit 270 configured in this manner is covered with the inner casing 251 in the casing 250, and thus is in a non-contact state with the metal member 260. Thereby, the insulation of the drive circuit 270 is ensured.
- the drive circuit 270 is not limited to a lighting circuit or a dimming circuit, and a booster circuit or the like can be appropriately selected and combined.
- Each of the lead wires 270a to 270d is an alloy copper lead wire, and is composed of a core wire made of alloy copper and an insulating resin film covering the core wire.
- the pair of lead wires 270a and 270b are electric wires for supplying DC power for lighting the LED module 220 from the drive circuit 270 to the LED module 220.
- the drive circuit 270 and the LED module 220 are electrically connected by a pair of lead wires 270a and 270b.
- one end (core wire) of each of the lead wires 270a and 270b is electrically connected to the power output portion (metal wiring) of the circuit board 271 by solder or the like, and the other end of each other.
- the end portion (core wire) is electrically connected to the power input portion (electrode terminal) of the LED module 220 by solder or the like.
- the pair of lead wires 270c and 270d are electric wires for supplying AC power from the base 280 to the drive circuit 270.
- the drive circuit 270 and the base 280 are electrically connected by a pair of lead wires 270c and 270d.
- one end portion (core wire) of each of the lead wires 270c and 270d is electrically connected to the base 280 (shell portion or eyelet portion), and each other end portion (core wire) is
- the power input portion (metal wiring) of the circuit board 271 is electrically connected by solder or the like.
- the base 280 is a power receiving unit that receives power for causing the LEDs 222 of the LED module 220 to emit light from outside the lamp.
- the base 280 is attached to a socket of a lighting fixture, for example, and when the light bulb shaped lamp 2 is turned on, the base 280 receives electric power from the socket of the lighting fixture.
- AC power is supplied to the base 280 from a commercial power supply (AC 100 V).
- the base 280 in the present embodiment receives AC power through two contact points, and the power received by the base 280 is input to the power input unit of the drive circuit 270 via the pair of lead wires 270c and 270b.
- the base 280 has a metal bottomed cylindrical shape, and includes a shell portion whose outer peripheral surface is a male screw and an eyelet portion attached to the shell portion via an insulating portion. Further, a screwing portion for screwing into the socket of the lighting device is formed on the outer peripheral surface of the base 280, and a screwing portion 252 b of the outer casing 252 is screwed on the inner peripheral surface of the base 280. A threaded portion for mating is formed.
- the type of the base 280 is not particularly limited, but in the present embodiment, a screw type Edison type (E type) base is used.
- E type screw type Edison type
- the base 280 E26 type, E17 type, E16 type or the like can be mentioned.
- a plug-type base may be used as the base 280.
- FIG. 15 is a diagram showing a configuration of an LED module according to Embodiment 2 of the present invention.
- 15A is a top view (plan view) of the LED module
- FIG. 15B is a cross-sectional view of the LED module cut along the line A1-A1 ′ of FIG. FIG.
- the LED module 220 includes a base 221, an LED 222, a sealing member 223a, a wavelength conversion member 223b, and a metal wiring 224.
- the LED module 220 in the present embodiment has a COB structure like the LED module 20 in the first embodiment.
- each component of the LED module 220 will be described in detail.
- the base 221 is an LED mounting board for mounting the LEDs 222.
- the substrate 21 in Embodiment 1 can be used.
- the base 221 in the present embodiment is formed of a member having a light-transmitting property with respect to visible light.
- the base 221 having translucency the light of the LED 222 is transmitted through the inside of the base 221 and emitted from the surface (back surface) on which the LED 222 is not mounted. Therefore, even when the LED 222 is mounted only on one surface (front surface) of the base 221, light is emitted from the other surface (back surface), and light distribution characteristics similar to an incandescent bulb can be obtained. It becomes possible.
- the base 221 is preferably made of a member having a high total transmittance.
- a ceramic substrate made of sintered alumina (Al 2 O 3 ) having a total transmittance of 90% or more for visible light can be used.
- a ceramic substrate made of AlN or MgO can be used as the base 221.
- the shape of the base 221 in this embodiment a rectangular substrate having a long shape in plan view (when viewed from the top of the globe 210) is used. Thereby, the shape of the planar view of the LED module 20 is also long.
- the base 221 is provided with through holes 221a and 221b.
- the through hole 221a is provided to fit the base 221 and the fixing portion 241b of the support column 241 of the support member 240.
- the through hole 221 a is formed in a rectangular shape in plan view at a position shifted in the longitudinal direction from the center of the base 221.
- two through holes 221b are provided for electrical connection with the two lead wires 270a and 270b.
- the through holes 221b are provided at both ends of the base 221 in the longitudinal direction. Yes.
- substrate was used as the base 221
- the base 221 an opaque substrate (for example, a metal base substrate) whose total transmittance is almost zero may be used.
- two bases 221 in which the LED 222, the sealing member 223a, and the wavelength conversion member 223b are formed only on the front side surface are used, and the back side surface of the two bases 221 is used. You may comprise one LED module by bonding together. Or you may comprise one LED module by forming LED222, the sealing member 223a, and the wavelength conversion member 223b on both surfaces of one base.
- the LED 222 is an example of a semiconductor light emitting element that emits light with a predetermined power, and is a bare chip that emits monochromatic visible light disposed on a base 221.
- the dimming of the LED 222 is controlled by a change in the magnitude of the current supplied from the drive circuit 270.
- a blue LED chip that emits blue light when energized is used.
- the LEDs 222 are mounted only on one surface (front surface) of the base 221, and four element rows each having a plurality of (for example, twelve) LEDs 222 are arranged in a straight line.
- a plurality of LEDs 222 are mounted, but the number of LEDs 222 may be appropriately changed according to the use of the light bulb shaped lamp.
- the number of LEDs 222 may be one.
- the number of LEDs 222 in one row may be 12 or more.
- the plurality of LEDs 222 are mounted in four rows on the base 221, but may be one row, or may be a plurality of rows other than the four rows.
- the LED 222 used in the present embodiment has the same configuration as the LED 22a (LED chip) in the first embodiment shown in FIG.
- FIG. 16 is a diagram showing the configuration of the sealing member and the wavelength conversion member in the LED module according to Embodiment 2 of the present invention. Specifically, FIG. 16 is a partially enlarged cross-sectional view of the sealing member and the wavelength conversion member in the LED module cut along the line B1-B1 ′ in FIG.
- the sealing member 223a corresponds to the main light emitting part (wavelength conversion member) in Embodiment 1, and is a light emitting part having a light emitting element itself, and a plurality of LEDs 222 are present in the sealing member 223a.
- the sealing member 223a is formed in a linear shape so as to cover (collectively seal) one row of the plurality of LEDs 222. In the present embodiment, since four element rows of the LED 222 are mounted, four sealing members 223a are formed.
- the sealing member 223a includes a phosphor that is a light wavelength conversion material, and also functions as a first wavelength conversion unit (first wavelength conversion member) that is a wavelength conversion layer that converts the wavelength of light from the LED 222.
- a phosphor-containing resin in which predetermined phosphor particles (not shown) and a light diffusion material (not shown) are dispersed in a silicone resin can be used.
- the phosphor particles when the LED 222 is a blue LED chip that emits blue light, for example, YAG-based yellow phosphor particles can be used as in the first embodiment in order to obtain white light.
- the white light emitted from the sealing member 223a is transmitted through the base 221 and also emitted from the back surface of the base 221. Is done.
- red phosphor particles can be further added as the phosphor particles contained in the sealing member 223a.
- the sealing member 223a configured in this way is made of, for example, an uncured paste-like sealing member material (for example, a silicone resin) containing a wavelength conversion material (for example, phosphor particles). It can be formed by applying and curing with a dispenser.
- an uncured paste-like sealing member material for example, a silicone resin
- a wavelength conversion material for example, phosphor particles
- the sealing member 223a is not necessarily formed of a silicone resin, and may 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 wavelength conversion member 223b is disposed at a position farther from the LED 222 than the sealing member 223a, and functions as a second wavelength conversion unit that is a wavelength conversion layer that converts the wavelength of light emitted from the LED 222.
- the wavelength conversion member 223b is a resin disposed on the side of the sealing member 223a on the base 221. That is, two wavelength conversion members 223b are formed linearly between the two sealing members 223a.
- the wavelength converting member 223b corresponds to the sub-light emitting unit (dummy sealing member) in the first embodiment, and is a light emitting unit that does not have an LED and emits light by light from the LED outside the wavelength converting member 223b. There is no light emitting element that emits light whose wavelength is converted by the wavelength conversion member 223b in the wavelength conversion member 223b.
- the wavelength conversion member 223b in the present embodiment includes phosphor particles that are light wavelength conversion materials, similarly to the sealing member 223a, but the wavelength conversion member 223b contains a phosphor that is more contained than the sealing member 223a. It is formed so that the concentration of particles becomes high. Here, the higher the concentration of the phosphor particles, the larger the amount of wavelength conversion (wavelength conversion amount).
- the wavelength conversion amount is an amount indicating the degree (degree) of converting the wavelength of light, and the degree of converting the wavelength of light increases as the wavelength conversion amount increases.
- the second wavelength conversion amount indicating the degree of conversion of the wavelength of the light emitted by the LED 222 in the wavelength conversion member 223b is more than the first wavelength conversion amount indicating the degree of conversion of the wavelength of the light emitted by the LED 222 in the sealing member 223a. large.
- the phosphor particles included in the wavelength conversion member 223b are the same as the phosphor particles included in the sealing member 223a, and thus detailed description thereof is omitted.
- the wavelength conversion member 223b is cured by applying, for example, an uncured paste-like sealing member material (for example, silicone resin) containing a wavelength conversion material (for example, phosphor particles) with a dispenser.
- an uncured paste-like sealing member material for example, silicone resin
- a wavelength conversion material for example, phosphor particles
- the sealing member 223a and the wavelength conversion member 223b use a phosphor-containing resin in which predetermined phosphor particles are dispersed in a silicone resin.
- the metal wiring 224 is the same as the metal wiring 26 in the first embodiment, is a wiring made of a metal such as Ag patterned on the LED mounting surface (front surface), and supplies power to the LED module 220 from the lead wires 270a and 270b. The supplied power is supplied to each LED 222. Each LED 222 is electrically connected to the metal wiring 224 via a gold wire 225.
- the metal wiring 224 formed around the through hole 221b serves as a power feeding portion.
- the leading ends of the two lead wires 270a and 270b are inserted into the through hole 221b as shown in FIG. 13, and are electrically and physically connected to the metal wiring 224 by solder.
- the light bulb shaped lamp 2 including the LED module 220 according to the present embodiment is configured.
- the bulb-shaped lamp 2 according to the present embodiment uses a globe having the same shape as the globe (bulb) used for the incandescent bulb, and the column 241 extends toward the inside of the globe 210.
- An LED module 220 is provided. Thereby, a light distribution characteristic with a wide light distribution angle can be realized, and a light distribution characteristic similar to that of an incandescent lamp can be obtained.
- the sealing member 223a as the first wavelength conversion unit and the distance from the LED 222 are arranged at a position farther than the sealing member 223a.
- the degree of converting the wavelength of light emitted from the LED 222 in the wavelength conversion member 223b (wavelength conversion amount) is greater than the degree of converting the wavelength of light emitted from the LED 222 in the sealing member 223a (wavelength conversion amount).
- FIG. 17 is a diagram for explaining the effect produced by the LED module according to Embodiment 2 of the present invention. Specifically, (a) of FIG. 17 is a diagram illustrating an irradiation state of light from the LED 222 when a current supplied to the LED 222 is small in the dimming control. Moreover, (b) of FIG. 17 is a figure which shows the irradiation state of the light from LED222 in case the electric current supplied to LED222 is large in dimming control.
- the degree of converting the wavelength of light emitted from the LED 222 in the wavelength conversion member 223b is larger than the degree of converting the wavelength of light emitted from the LED 222 in the sealing member 223a. For this reason, the influence of the fall of the wavelength conversion efficiency by the sealing member 223a is reduced because the said light also passes the wavelength conversion member 223b.
- the LED module 220 according to Embodiment 2 of the present invention even when dimming is controlled, the influence of a decrease in the wavelength conversion efficiency of the light emitted by the LED 222 is reduced, and the emitted light The change in color can be suppressed.
- the wavelength conversion member 223b is a resin disposed on the base 221 on the side of the sealing member 223a. As described above, in the LED module 220, the wavelength conversion member 223b is disposed on the side of the sealing member 223a, so that the influence of the decrease in the wavelength conversion efficiency of the light emitted from the LED 222 can be easily reduced, and the emitted light The change in color can be suppressed.
- the wavelength conversion member 223b has a higher concentration of phosphor particles contained than the sealing member 223a.
- the influence of the decrease in the wavelength conversion efficiency of the light emitted from the LED 222 can be easily reduced and the change in the color of the emitted light can be suppressed. can do.
- the sealing member 223a is disposed so as to cover the periphery of the LED 222.
- the sealing member 223a may be disposed so as to cover at least a part of the LED 222. .
- FIG. 18 is a diagram showing a configuration of an LED module according to Modification 1 of Embodiment 2 of the present invention.
- 18A is a plan view of the LED module
- FIG. 18B is a cross-sectional view of the LED module taken along the line A2-A2 ′ of FIG.
- the LED module 220A includes a base 221, an LED 222, a sealing member 223a, a metal wiring 224, and a phosphor layer 227. That is, the LED module 220A in this modification does not have the wavelength conversion member 223b of the LED module 220 in the second embodiment. Further, the LED module 220 ⁇ / b> A in this modification has a phosphor layer 227.
- the base 221, LED 222, sealing member 223 a, and metal wiring 224 included in the LED module 220 ⁇ / b> A are the same as the base 221, LED 222, sealing member 223 a, and metal wiring 224 included in the LED module 220 in the second embodiment. Therefore, detailed description is omitted.
- FIG. 19 is an enlarged cross-sectional view around the LED in the LED module according to Modification 1 of Embodiment 2 of the present invention.
- FIG. 20 is an enlarged cross-sectional view of the main part of the LED module according to Modification 1 of Embodiment 2 of the present invention. Specifically, FIG. 20 is an enlarged cross-sectional view showing a configuration around one sealing member of the LED module cut along the line B2-B2 'in FIG.
- the phosphor layer 227 is a printed phosphor (wavelength conversion member) that is formed between the base 221 and each of the plurality of LEDs 222 and includes a light wavelength conversion material that converts the wavelength of light emitted from the LEDs 222. That is, the phosphor layer 227 is printed on the base 221, and the LED 222 is mounted on the printed phosphor layer 227.
- the light wavelength conversion material included in the phosphor layer 227 phosphor particles that are excited by light emitted from the LED 222 and emit light of a desired color (wavelength) are used, as in the sealing member 223a.
- the phosphor layer 227 is a sintered body film formed of phosphor particles and a sintering binder.
- the phosphor particles contained in the phosphor layer 227 are the same as the phosphor particles contained in the sealing member 223a, and thus detailed description thereof is omitted.
- an inorganic material such as a glass frit made of a material mainly composed of silicon oxide (SiO 2 ) can be used.
- the glass frit is a binding material (binding material) for binding the phosphor particles to the base 221 and is made of a material having a high transmittance for visible light.
- Glass frit can be formed by heating and melting glass powder.
- As glass powder of the glass frit SiO 2 —B 2 O 3 —R 2 O, B 2 O 3 —R 2 O, or P 2 O 5 —R 2 O (wherein R 2 O is any , Li 2 O, Na 2 O, or K 2 O).
- SnO 2 —B 2 O 3 made of a low-melting crystal can be used as the material for the binder for sintering.
- the phosphor layer 227 is formed by being fixed to the base 221 between the base 221 and the LED 222. That is, the phosphor layer 227 is fixed to the base 221 with the binder that the phosphor layer 227 itself has.
- the phosphor layer 227 in this modification is formed in an island shape on the base 221 immediately below each LED 222. That is, a plurality of phosphor layers 227 are formed corresponding to each of the plurality of LEDs 222.
- the phosphor layer 227 is formed so as not to contact the metal wiring 224 formed between the adjacent LEDs 222.
- the phosphor layer 227 has a central portion 227a at the central position (central position on the XY plane) and on the outside of the central portion 227a (around the central portion 227a on the XY plane). It has an end 227b. That is, the central portion 227 a and the end portion 227 b are phosphor layers that are integrally formed between the base 221 and the LED 222.
- the central portion 227a is disposed so as to cover at least a part of the LED 222, and functions as a first wavelength conversion portion that converts the wavelength of light emitted from the LED 222. That is, the central portion 227a is a rectangular light wavelength conversion material disposed below (directly below) the LED 222.
- the end portion 227b is disposed at a position farther from the LED 222 than the central portion 227a, and functions as a second wavelength conversion unit that converts the wavelength of light emitted from the LED 222. That is, the end portion 227b is a circumferential light wavelength conversion material disposed so as to surround the LED 222.
- the phosphor layer 227 is formed so that the thickness (width in the Z-axis direction) increases as the distance from the LED 222 increases. That is, the end portion 227b is thicker than the central portion 227a. Specifically, the upper surface of the end portion 227b is formed in a curved surface so that the thickness increases as the position is farther from the central portion 227a.
- the thickness of the central part 227a is several tens of micrometers
- the maximum thickness of the end part 227b is several hundreds of micrometers.
- the wavelength conversion amount is an amount indicating the degree (degree) of converting the wavelength of light, and the degree of converting the wavelength of light increases as the wavelength conversion amount increases. That is, the second wavelength conversion amount indicating the degree of conversion of the wavelength of the light emitted by the LED 222 at the end portion 227b is larger than the first wavelength conversion amount indicating the degree of conversion of the wavelength of the light emitted by the LED 222 at the central portion 227a.
- the phosphor layer 227 is formed so that the wavelength conversion amount of the light emitted from the LED 222 increases as the distance from the LED 222 increases.
- the central portion 227a as the first wavelength conversion portion and the second wavelength conversion portion disposed at a position where the distance from the LED 222 is farther than the central portion 227a.
- End 227b the base 221 has translucency, and the central part 227a and the end part 227b are phosphor layers integrally formed between the base 221 and the LED 222.
- the degree of conversion of the wavelength of light emitted from the LED 222 at the end portion 227b (wavelength conversion amount) is greater than the degree of conversion of the wavelength of light emitted from the LED 222 at the central portion 227a (wavelength conversion amount).
- the LED module 220 ⁇ / b> A in the present modification can achieve the same effect as the LED module 220 in the second embodiment. Specifically, the effect produced by the LED module 220A having the above configuration will be described with reference to FIG.
- FIG. 21 is a diagram for explaining an effect produced by the LED module according to the first modification of the second embodiment of the present invention.
- FIG. 21A is a diagram illustrating an irradiation state of light from the LED 222 when a current supplied to the LED 222 is small in the light control.
- (b) of FIG. 21 is a figure which shows the irradiation state of the light from LED222 in case the electric current supplied to LED222 is large in light control.
- the degree to which the wavelength of the light emitted from the LED 222 at the end 227b is converted is greater than the degree to which the wavelength of the light emitted from the LED 222 at the central part 227a is converted. For this reason, the influence of the fall of wavelength conversion efficiency is reduced because the said light also passes the edge part 227b.
- the LED module 220A according to the second embodiment of the present invention even when light control is controlled, the wavelength conversion efficiency of the light emitted by the LED 222 in the light toward the back surface side of the base 221 is improved. The influence of the reduction can be reduced, and the change in the color of the emitted light can be suppressed.
- the end portion 227b is thicker than the central portion 227a. As described above, in the LED module 220A, by adjusting the thickness of the phosphor layer 227, it is possible to easily reduce the influence of the decrease in the wavelength conversion efficiency of the light emitted from the LED 222 and suppress the change in the color of the emitted light. can do.
- FIG. 22 and FIG.23 are diagrams showing a configuration of an LED module according to Modification 2 of Embodiment 2 of the present invention.
- 22A is a plan view of the LED module 220B
- FIG. 22B is a cross-sectional view of the LED module 220B cut along the line A3-A3 ′ of FIG.
- FIG. 23 is an essential part enlarged cross-sectional view showing the configuration around the sealing member 223a and the wavelength conversion member 223b of the LED module 220B cut along the line B3-B3 ′ in FIG.
- the LED module 220B includes a base 221, an LED 222, a sealing member 223a, a wavelength conversion member 223b, a metal wiring 224, and a phosphor layer 227. That is, the LED module 220B in this modification has the wavelength conversion member 223b as in the LED module 220 in the second embodiment. In addition, the LED module 220B in the present modification has a phosphor layer 227, similar to the LED module 220A in the first modification.
- the base 221, LED 222, sealing member 223 a, wavelength conversion member 223 b, and metal wiring 224 provided in the LED module 220 ⁇ / b> B are the base 221, LED 222, sealing member provided in the LED module 220 in the second embodiment. Since it is the same as that of 223a, the wavelength conversion member 223b, and the metal wiring 224, detailed description is abbreviate
- the phosphor layer 227 included in the LED module 220B is the same as the phosphor layer 227 included in the LED module 220A in the first modification, and thus detailed description thereof is omitted.
- the sealing member 223a functions as the first wavelength conversion unit
- the wavelength conversion member 223b functions as the second wavelength conversion unit
- the phosphor layer 227 functions as the third wavelength conversion unit.
- the same effects as those of the LED module 220 in Embodiment 2 and the LED module 220A in Modification 1 can be achieved.
- FIG. 24 is an enlarged cross-sectional view of a relevant part of an LED module according to Modification 3 of Embodiment 2 of the present invention. Specifically, FIG. 24 is a partial cross-sectional view of the sealing member 223a of the LED module 220C.
- the present modification can be applied to the LED module 220A in Modification 1 and the LED module 220B in Modification 2.
- the LED module 220C includes a phosphor layer 228 instead of the phosphor layer 227 provided in the first and second modifications. Note that, in the LED module 220C in the present modification, the constituent elements other than the phosphor layer 228 are the same as the constituent elements other than the phosphor layer 227 in the first and second modifications, and detailed description thereof is omitted. To do.
- the phosphor layer 228 is a printed phosphor including a light wavelength conversion material that is formed between the base 221 and each of the plurality of LEDs 222 and converts the wavelength of light emitted from the LEDs 222.
- the phosphor layer 228 has a central portion 228a at a central position (central position on the XY plane), and an end portion 228b outside the central portion 228a (around the central portion 228a on the XY plane).
- the end portion 228b is thicker (width in the Z-axis direction) than the central portion 228a. Specifically, the end portion 228b is formed so that the upper surface becomes a stepped flat surface so that the thickness increases as the position is farther from the central portion 228a. That is, the end portion 227b in the first and second modified examples has a shape in which the thickness gradually changes, whereas the end portion 228b in the present modified example has a shape in which the thickness changes stepwise. Have.
- the phosphor layer 228 in the present modification is the same as the phosphor layer 227 in the first and second modifications, except for the shape, and detailed description thereof is omitted.
- the second wavelength conversion amount indicating the degree of conversion of the wavelength of the light emitted by the LED 222 at the end 228b is larger than the first wavelength conversion amount indicating the degree of conversion of the wavelength of the light emitted by the LED 222 at the central portion 228a.
- the central portion 228a functions as the first wavelength converting portion
- the end portion 228b functions as the second wavelength converting portion.
- the sealing member 223a functions as the first wavelength conversion unit
- the wavelength conversion member 223b functions as the second wavelength conversion unit
- the phosphor layer 228 functions as a third wavelength conversion unit.
- the same effects as those of the LED module 220A in Modification 1 and the LED module 220B in Modification 2 can be achieved.
- FIG. 25 is an enlarged cross-sectional view of a main part of an LED module according to Modification 4 of Embodiment 2 of the present invention. Specifically, FIG. 25 is a partial cross-sectional view of the sealing member 223a of the LED module 220D.
- the present modification can be applied to the LED module 220A in Modification 1 and the LED module 220B in Modification 2.
- the LED module 220D includes a phosphor layer 229 instead of the phosphor layer 227 included in the first and second modifications.
- the constituent elements other than the phosphor layer 229 are the same as the constituent elements other than the phosphor layer 227 in the first and second modified examples, and detailed description thereof is omitted. To do.
- the phosphor layer 229 is a printed phosphor that is formed between the base 221 and each of the plurality of LEDs 222 and includes a light wavelength conversion material that converts the wavelength of light emitted by the LEDs 222.
- the phosphor layer 229 has a central portion 229a at a central position (central position on the XY plane) and an end portion 229b outside the central portion 229a (around the central portion 229a on the XY plane).
- the phosphor layer 229 is formed so that the concentration of phosphor particles contained increases as the distance from the LED 222 increases. That is, the end portion 229b has the same thickness (width in the Z-axis direction) as the central portion 229a, but has a higher concentration of phosphor particles contained than the central portion 229a. Specifically, the end portion 229b is formed such that the concentration of the phosphor particles increases as the position is farther from the central portion 229a. That is, the end portion 227b and the end portion 228b in the first to third modifications are formed so that the thickness increases as the position is farther from the LED 222, whereas the end portion 229b in the present modification is farther from the LED 222.
- the concentration of the phosphor particles increases as the position increases.
- the phosphor particles included in the phosphor layer 229 in the present modification are the same as the phosphor particles included in the phosphor layer 227 in the first and second modifications, and thus detailed description thereof is omitted.
- the second wavelength conversion amount indicating the degree of conversion of the wavelength of the light emitted by the LED 222 at the end 229b is the first wavelength conversion amount indicating the degree of conversion of the wavelength of the light emitted by the LED 222 at the central portion 229a. Bigger than.
- the central portion 229a functions as the first wavelength converting portion
- the end portion 229b functions as the second wavelength converting portion.
- the sealing member 223a functions as the first wavelength conversion unit
- the wavelength conversion member 223b functions as the second wavelength conversion unit
- the phosphor layer 229 functions as a third wavelength conversion unit.
- the same effects as those of the LED module 220A in Modification 1 and the LED module 220B in Modification 2 can be obtained. That is, in the present modification, the end portion 229b has a higher concentration of phosphor particles contained than the central portion 229a.
- the influence of the decrease in the wavelength conversion efficiency of the light emitted by the LED 222 can be easily reduced and the change in the color of the emitted light can be suppressed. can do.
- FIG. 26 is a diagram showing a configuration of an LED module according to Modification 1 of the present invention, in which (a) is a plan view and (b) is a cross-sectional view taken along the line AA ′ in (a). Moreover, FIG. 27 is a figure for demonstrating the assembly method of the LED module which concerns on the modification 1 of this invention.
- a phosphor-containing resin as a sub-light emitting portion on a base 221 provided with a plurality of main light emitting portions comprising LEDs 222 (light emitting elements) and a sealing member 223.
- the LED module 320 can be configured by overlapping the masks 324 in which a plurality of H.323s are fitted.
- the phosphor-containing resin 323 in the mask 324 has a configuration in which a phosphor (wavelength conversion material) is dispersed in a resin such as a silicone resin.
- the phosphor-containing resin 323 corresponds to a dummy sealing member, and no light-emitting element such as an LED exists in the phosphor-containing resin 323.
- the sealing member 223 and the phosphor-containing resin 323 are provided adjacent to each other.
- the sealing member 223 includes the adjacent phosphor-containing material. It is arranged between the resins 323. That is, the sealing member 223 and the phosphor-containing resin 323 are alternately arranged in both the row direction and the column direction.
- the base 221 provided with the light emitting part including the LED 222 and the sealing member 223 and the mask 324 having the phosphor-containing resin 323 are overlapped.
- the emission color of the LED module 320 as a whole can be enhanced.
- the color can be adjusted by changing the ratio of the phosphor-containing resin 323 in the mask 324.
- FIG. 28 is a perspective view showing a configuration of an LED module according to Modification 2 of the present invention.
- a main light emitting unit composed of an LED 222 and a sealing member 223 that seals the LED 222, and a sub light emitting unit that is a dummy sealing member 24X that does not include an LED.
- they are not linear but are all formed in a dome shape.
- the sealing member 223 and the dummy sealing member 24X are provided so as to be adjacent to each other.
- the sealing member 223 is disposed between the adjacent dummy sealing members 24X. That is, the sealing member 223 and the dummy sealing member 24X are alternately arranged in both the row direction and the column direction.
- the emission color of the LED module may be color shifted by losing the color conversion function of the dummy sealing member 24X.
- a part or all of the plurality of dummy sealing members 24X may be temporarily fastened, and the dummy sealing members 24X that have been temporarily fastened may be removed to cause a color shift. it can.
- the color shift can be performed by covering each or all of the plurality of dummy sealing members 24 ⁇ / b> X with the reflecting member 400.
- the reflecting member 400 is configured in a cup shape so as to cover the dummy sealing member 24X, for example, and the outer surface of the reflecting member 400 has a reflecting function.
- the surface of the dummy sealing member 24X is blackened by painting a part or all of the plurality of dummy sealing members 24X with black ink, etc., so that the color can be shifted.
- the color shift can be performed by covering part or all of the plurality of dummy sealing members 24 ⁇ / b> X with a black mask 500.
- the light bulb shaped lamp according to the present invention has been described based on the first and second embodiments and modifications thereof, but the present invention is not limited to these embodiments and modifications.
- the color may be shifted by adding a phosphor or a light absorber more specifically in the sealing member not including the LED.
- an LED module may be configured by mixing a red phosphor with a dummy sealing member 24Y containing a yellow phosphor. Thereby, it can shift to red. Or you may make it shift to green by mixing green fluorescent substance with the dummy sealing member 24Y containing yellow fluorescent substance.
- the yellow component may be cut and color shifted by mixing neodymium powder (light absorber) with the dummy sealing member 24Y containing a yellow phosphor.
- the color may be shifted by adding a phosphor-containing resin to the main light emitting portion.
- the color shift can be performed by forming the phosphor-containing resin 423 on the sealing member 223 that seals the LED 222.
- the phosphor-containing resin 423 may be formed only directly above the LED 222.
- the phosphor-containing resin 423 is obtained by dispersing a phosphor (wavelength conversion material) in a resin such as a silicone resin.
- the cross-sectional shape of the sealing member 223 may be a substantially semicircular shape as shown in FIG. 34 (a) or a substantially rectangular shape as shown in FIG. 34 (b).
- a phosphor layer may be formed on the back surface of the translucent substrate so as to face the main light emitting portion.
- a phosphor layer 527 may be formed on the back surface of the translucent base 221 so as to face the main light emitting portion (LED 222 and sealing member 223). That is, the main light emitting portion and the phosphor layer 527 may be formed with the translucent base 221 interposed therebetween.
- the phosphor layer 527 is a wavelength conversion member including a light wavelength conversion material that converts the wavelength of light emitted from the LED 222.
- the LED module is configured to emit white light by the blue LED chip and the yellow phosphor.
- the present invention is not limited to this.
- a phosphor-containing resin containing a red phosphor and a green phosphor may be used and combined with this and a blue LED chip to emit white light.
- an LED that emits a color other than blue may be used as the LED.
- the phosphor particles may be a combination of phosphor particles that emit light in three primary colors (red, green, and blue).
- a wavelength conversion material other than the phosphor particles may be used.
- the wavelength conversion material absorbs light of a certain wavelength such as a semiconductor, a metal complex, an organic dye, or a pigment, and has a wavelength different from the absorbed light.
- a material containing a substance that emits light may be used.
- LED was illustrated as a light emitting element in the said Embodiment 1, 2, and modification
- EL elements such as semiconductor light emitting elements, such as a semiconductor laser, or organic EL (Electro Luminescence) and inorganic EL, other solid-states A light emitting element may be used.
- the LED module has a COB type structure in which the LED chip is directly mounted on the substrate, but is not limited thereto.
- a package-type LED element in which an LED chip is mounted in a concave portion (cavity) of a resin container and a phosphor-containing resin is enclosed in the concave portion is used.
- a surface mount type (SMD) LED module configured by mounting a plurality of elements on the formed substrate may be used.
- the LED module according to this embodiment is a straight tube lamp, a round lamp, or the like. It can also be applied to. In this case, what is necessary is just to form the shape of the board
- the lead wire is provided outside the support column.
- a cavity is provided in the support column 40A.
- a part of the lead wire may be disposed through the cavity of the support column 40A.
- the lead wire 70 is provided so as to pierce the substrate from the back surface side of the substrate, but may be provided so as to pierce from the front surface side of the substrate.
- the wavelength conversion member (the first to sixth sealing members, the first to sixth sealing members) is formed in a linear shape, but is curved, zigzag, or circular. Alternatively, other linear shapes such as a rectangular ring shape may be used. In this case, the LEDs can be arranged according to the shape of the wavelength conversion member.
- the non-light emitting semiconductor electronic component (zener diode) is included only in the second dummy sealing member 24b.
- the present invention is not limited to this.
- a non-light emitting semiconductor electronic component (zener diode) may be included in a dummy sealing member other than the second dummy sealing member 24b, such as the first dummy sealing member 24a.
- non-luminous semiconductor electronic components can be included in the plurality of dummy sealing members.
- the screwing part 252b is a part of the outer casing part 252, but may be a part of the inner casing part 251. That is, the screwing part 252b may be regarded as a part of a circuit case that houses the drive circuit 270, and more specifically, the screwing part 252b may be a part of the circuit holder part 251b.
- the present invention can also be realized as an illumination device including the above-described light bulb shaped lamp.
- a lighting device according to an embodiment of the present invention a light bulb shaped lamp 1 according to the first embodiment, and a lighting fixture (lighting fixture) 3 to which the light bulb shaped lamp 1 is attached
- An illuminating device can be configured.
- the lighting device 3 turns off and turns on the light bulb shaped lamp 1.
- the lighting device 3 is attached to the ceiling, and a translucent or non-light translucent lamp cover that covers the light bulb shaped lamp 1. 5.
- the appliance main body 4 has a socket 4 a for attaching the cap of the light bulb shaped lamp 1 and supplying power to the light bulb shaped lamp 1.
- a translucent plate may be provided in the opening of the lamp cover 5.
- the light bulb shaped lamp attached to the lighting device 3 the light bulb shaped lamp 2 in the second embodiment or the light bulb shaped lamp in the modification of the first and second embodiments may be used.
- the present invention is useful as a lamp having a light emitting element such as an LED, in particular, a light bulb shaped lamp that replaces a conventional incandescent light bulb or the like, and can be widely used as a light source of equipment in a lighting device or the like.
- a light emitting element such as an LED
- a light bulb shaped lamp that replaces a conventional incandescent light bulb or the like
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Abstract
Description
以下、本発明の実施の形態1について説明する。
まず、本発明の実施の形態1に係る電球形ランプ1の全体構成について、図1~図3を参照しながら説明する。
グローブ10は、LEDモジュール20を収納するとともに、LEDモジュール20からの光をランプ外部に透光する透光性カバーである。グローブ10の内面に入射したLEDモジュール20の光は、グローブ10を透過してグローブ10の外部へと取り出される。
LEDモジュール20は、LED(LEDチップ)を有し、リード線70を介してLEDに電力が供給されることにより発光する発光モジュール(発光装置)であって、所定の波長(色)の光を放出する。LEDモジュール20は、支柱40によってグローブ10内の中空に保持されている。
口金30は、LEDモジュール20のLEDを発光させるための電力を電球形ランプ1の外部から受ける受電部である。口金30は、二接点によって交流電力を受電し、口金30で受電した電力はリード線を介して点灯回路80の電力入力部に入力される。例えば、口金30には商用電源(AC100V)から交流電力が供給される。具体的には、口金30は、照明器具(照明装置)のソケットに取り付けられてソケットから交流電力を受ける。これにより、電球形ランプ1(LEDモジュール20)が点灯する。
支柱40は、グローブ10の開口部11の近傍からグローブ10の内方に向かって延びるように設けられた金属製のステム(金属支柱)であり、グローブ10内でLEDモジュール20を保持する保持部材として機能する。支柱40の一端はLEDモジュール20に接続され、他端は支持台50に接続されている。
支持台(支持板)50は、支柱40を支持する部材であり、樹脂ケース60に固定されている。支持台50は、グローブ10の開口部11の開口端に接続されてグローブ10の開口部11を塞ぐように構成されている。具体的に、支持台50は、周縁に段差部を有する円盤状部材で構成されており、その段差部にはグローブ10の開口部11の開口端が当接されている。そして、この段差部において、支持台50と樹脂ケース60とグローブ10の開口部11の開口端とは、接着剤によって固着されている。
樹脂ケース60は、支柱40と口金30とを絶縁すると共に点灯回路80を収納するための絶縁ケース(回路ホルダ)であり、大径円筒状の第1ケース部61と、小径円筒状の第2ケース部62とから構成されている。樹脂ケース60は、例えば、ポリブチレンテレフタレート(PBT)によって成形されている。
2本のリード線70は、LEDモジュール20を点灯させるための電力を点灯回路80からLEDモジュール20に供給するためのリード線対であり、銅線等の針金状の金属電線より構成することができる。各リード線70は、グローブ10内に配置され、一端がLEDモジュール20の外部端子と電気的に接続され、他端が点灯回路80の電力出力部、言い換えると口金30と電気的に接続されている。
点灯回路80は、LEDモジュール20のLEDを点灯させるための駆動回路(回路ユニット)であり、樹脂ケース60によって覆われている。点灯回路80は、口金30から給電された交流電力を直流電力に変換する回路を含み、2本のリード線70を介して変換後の直流電力をLEDモジュール20のLEDに供給する。
次に、LEDモジュール20の詳細な構成について、図4を用いて説明する。図4は、本実施の形態に係る電球形ランプ1におけるLEDモジュールの構成を示す図である。なお、図4の(a)は、LEDモジュール20を上方から見たときの平面図であり、図4の(b)は、(a)のA-A’線における同LEDモジュール20の断面図であり、図4の(c)は、(a)のB-B’線における同LEDモジュール20の断面図であり、図4の(d)は、(a)のC-C’線における同LEDモジュール20の断面図であり、図4の(e)は、(a)のD-D’線における同LEDモジュール20の断面図である。
基板21は、透光性基板又は非透光性基板を用いることができる。基板21は、例えば酸化アルミニウム(アルミナ)又は窒化アルミニウム等のセラミック材料からなるセラミック基板、樹脂基板、ガラス基板、フレキシブル基板、又は樹脂被膜された金属基板(メタルベース基板)等である。基板21は、LED22a、22b及び32を実装するための矩形状の実装基板(LED実装用基板)である。基板21は、放熱性を確保するために比較的に面積の大きい基板を用いており、例えば、長辺の長さをL1とし、短辺の長さをL2とし、厚みをdとすると、例えばL1=30mm、L2=18mm、d=1mmとすることができる。
LED22a~22dは、所定の電力により発光する半導体発光素子である。LED22a~22dは、それぞれ基板21の表面(第1の面)の上に複数実装されている。また、複数のLED22a~22dは、それぞれ基板21の長辺方向に同一ピッチで配列されている。複数のLED22a~22dは、各素子列内において直列接続されており、かつ、素子列同士において並列接続されている。
第1封止部材23a、第2封止部材23b、第3封止部材23c及び第4封止部材23dは、LED22a~22dの各素子列を一括封止するとともに金属配線26を封止している。一方、第1ダミー封止部材24aは、LED及び金属配線を封止していない。また、第2ダミー封止部材24bは、LEDを封止していないが、ツェナーダイオード25及び金属配線26を封止している。
金属配線26は、LEDを発光するための電流が流れる導電性配線であって、基板21の表面(第1の面)上に、所定形状にパターン形成される。
ワイヤー27は、LED22a~22dと金属配線26、及び、ツェナーダイオード25と金属配線26とを接続するための電線であり、例えば、金ワイヤーである。図5で説明したように、このワイヤー27により、LED22aの上面に設けられたワイヤーボンド部122e及び122fのそれぞれとLED22aの両側に隣接して形成された金属配線26とがワイヤボンディングされている。
端子28は、リード線70との半田付けが行われる外部接続電極であって、貫通孔21bを囲むように基板21の表面に所定形状で形成された接続用ランドである。端子28は、金属配線26と一体化して形成されており、金属配線26と同じ金属材料を用いて、金属配線26と同時にパターン形成される。
次に、LEDモジュール20と支柱40及びリード線70との接続関係について、図6を用いて説明する。図6は、本実施の形態に係る電球形ランプ1におけるLEDモジュール周辺の構成を示す図である。なお、図6の(a)は電球形ランプ1においてグローブ10を除いた状態でLEDモジュール20を上方から見たときの平面図であり、図6の(b)は、(a)のX-X’線における同電球形ランプ1の断面図であり、図4の(c)は、(a)のY-Y’線における同電球形ランプ1の断面図である。
次に、本実施の形態に係るLEDモジュール20の作用効果について図7を用いて説明する。図7は、本発明の実施の形態1に係る電球形ランプ1におけるLEDモジュール20の作用効果を説明するための図であり、(a)は比較例1のLEDモジュール200の一部拡大断面図であり、(b)は比較例2のLEDモジュール201の一部拡大断面図であり、(c)は、実施の形態1におけるLEDモジュール20の一部拡大断面図である。
次に、電球形ランプ1が備えるLEDモジュール20の変形例について説明する。
次に、実施の形態1の変形例1について、図8Aを用いて説明する。図8Aは、本発明の実施の形態1の変形例1におけるLEDモジュール20Aの平面図である。
次に、実施の形態1の変形例2について、図8Bを用いて説明する。図8Bは、本発明の実施の形態1の変形例2におけるLEDモジュール20Bの平面図である。
次に、実施の形態1の変形例3に係る電球形ランプについて、図9を用いて説明する。図9の(a)は、本変形例に係る電球形ランプにおいてグローブを除いた状態でLEDモジュールを上方から見たときの平面図であり、図9の(b)は、(a)のX-X’線における同電球形ランプの断面図であり、図9の(c)は、(a)のY-Y’線における同電球形ランプの断面図であり、図9の(d)は、(a)のZ-Z’線における同電球形ランプの断面図である。
次に、実施の形態1の変形例4に係る電球形ランプについて、図10を用いて説明する。図10の(a)は、本変形例に係る電球形ランプにおいてグローブを除いた状態でLEDモジュールを上方から見たときの平面図であり、図10の(b)は、(a)のX-X’線における同電球形ランプの断面図であり、図10の(c)は、(a)のY-Y’線における同電球形ランプの断面図であり、図10の(d)は、(a)のZ-Z’線における同電球形ランプの断面図である。
以下、本発明の実施の形態2について説明する。
まず、本実施の形態2に係る電球形ランプ2の全体構成について、図11及び図12を用いて説明する。図11は、本発明の実施の形態2に係る電球形ランプの外観斜視図である。また、図12は、本発明の実施の形態2に係る電球形ランプの分解斜視図である。
図12~図14に示すように、グローブ210は、実施の形態1におけるグローブ10と同様の構成である。
LEDモジュール220は、実施の形態1におけるLEDモジュール20と同様に、LED(LEDチップ)を有し、リード線270a及び270bを介してLEDに電力が供給されることにより発光する発光モジュール(発光装置)であって、所定の波長の光を放出する。LEDモジュール220は、支持部材240によってグローブ210内の中空に保持されている。
結合部材230は、グローブ210と支持部材240と金属部材260とを結合する部材である。図12に示すように、結合部材230は、支持部材240の台座242(径小部242a)の周囲を囲むようにリング状に構成されている。結合部材230は、支持部材240の台座242の外周面と外側筐体部252の外郭部252aとの隙間に流し込まれた流動性絶縁樹脂(例えばシリコン)を硬化させることで成型することができる。
支持部材240は、LEDモジュール220を支持する部材であり、金属によって構成されている。支持部材240(金属支柱)は、主にグローブ10の内部に位置する支柱241と、主に筐体250(外側筐体部252)に囲まれる台座242とによって構成されている。本実施の形態において、支柱241と台座242とは、同一材料によって一体成型されている。
筐体250は、内方に駆動回路270が配置された絶縁性を有する絶縁ケースであり、内側筐体部(第1筐体部)251と外側筐体部(第2筐体部)252とによって構成されている。筐体250は、絶縁性樹脂材料によって構成することができ、例えば、ポリブチレンテレフタレート(PBT)によって樹脂成型することができる。
金属部材260は、筐体250における内側筐体部251を囲むようにスカート状に構成されており、内側筐体部251と外側筐体部252との間に配置される。これにより、金属部材260は駆動回路270と非接触状態とすることができ、駆動回路270の絶縁性を確保することができる。
駆動回路(回路ユニット)270は、LEDモジュール220のLED222を点灯(発光)させるための点灯回路(電源回路)を有しており、LEDモジュール220に所定の電力を供給する。例えば、駆動回路270は、一対のリード線270c及び270dを介して口金280から供給される交流電力を直流電力に変換する回路を含み、一対のリード線270a及び270bを介して当該直流電力をLEDモジュール220に供給する。
リード線270a~270dは、いずれも合金銅リード線であり、合金銅からなる芯線と当該芯線を被覆する絶縁性の樹脂被膜とによって構成されている。
図13及び図14に示すように、口金280は、LEDモジュール220のLED222を発光させるための電力をランプ外部から受電する受電部である。口金280は、例えば、照明器具のソケットに取り付けられ、電球形ランプ2を点灯させる際、口金280は、照明器具のソケットから電力を受ける。例えば、口金280には商用電源(AC100V)から交流電力が供給される。本実施の形態における口金280は二接点によって交流電力を受電し、口金280で受電した電力は、一対のリード線270c及び270bを介して駆動回路270の電力入力部に入力される。
次に、本発明の実施の形態2に係るLEDモジュール220の各構成要素について、図15及び図16を用いて説明する。図15は、本発明の実施の形態2に係るLEDモジュールの構成を示す図である。つまり、図15の(a)は、同LEDモジュールの上面図(平面図)であり、図15の(b)は、(a)のA1-A1’線に沿って切断した同LEDモジュールの断面図である。
次に、電球形ランプ2が備えるLEDモジュール220の変形例について説明する。なお、以下の変形例では、電球形ランプが備えるLEDモジュール以外の構成要素は、上記の実施の形態2における電球形ランプ2が備える構成要素と同様であるため、LEDモジュール以外の構成要素についての説明は省略する。
本発明の実施の形態2の変形例1に係るLEDモジュール220Aの各構成要素について、図18~図20を用いて説明する。図18は、本発明の実施の形態2の変形例1に係るLEDモジュールの構成を示す図である。つまり、図18の(a)は、同LEDモジュールの平面図であり、図18の(b)は、(a)のA2-A2’線に沿って切断した同LEDモジュールの断面図である。
本発明の実施の形態2の変形例2に係るLEDモジュール220Bの各構成要素について、図22及び図23を用いて説明する。図22及び図23は、本発明の実施の形態2の変形例2に係るLEDモジュールの構成を示す図である。つまり、図22の(a)は、LEDモジュール220Bの平面図であり、図22の(b)は、(a)のA3-A3’線に沿って切断した同LEDモジュール220Bの断面図である。また、図23は、図22の(a)のB3-B3’線に沿って切断した同LEDモジュール220Bの封止部材223a及び波長変換部材223b周辺の構成を示す要部拡大断面図である。
本発明の実施の形態2の変形例3に係るLEDモジュール220Cの構成について、図24を用いて説明する。図24は、本発明の実施の形態2の変形例3に係るLEDモジュールの要部拡大断面図である。具体的には、図24は、LEDモジュール220Cの封止部材223aの部分断面図である。ここで、本変形例は、上記の変形例1におけるLEDモジュール220A及び変形例2におけるLEDモジュール220Bに適用可能である。
本発明の実施の形態2の変形例4に係るLEDモジュール220Dの構成について、図25を用いて説明する。図25は、本発明の実施の形態2の変形例4に係るLEDモジュールの要部拡大断面図である。具体的には、図25は、LEDモジュール220Dの封止部材223aの部分断面図である。ここで、本変形例は、上記の変形例1におけるLEDモジュール220A及び変形例2におけるLEDモジュール220Bに適用可能である。
以下、本発明の変形例について説明する。
図26は、本発明の変形例1に係るLEDモジュールの構成を示す図であり、(a)は平面図、(b)は(a)のA-A’線における断面図である。また、図27は、本発明の変形例1に係るLEDモジュールの組み立て方法を説明するための図である。
図28は、本発明の変形例2に係るLEDモジュールの構成を示す斜視図である。
以上、本発明に係る電球形ランプについて、実施の形態1、2及びその変形例に基づいて説明したが、本発明は、これらの実施の形態及び変形例に限定されるものではない。
3 点灯器具
4 器具本体
4a ソケット
5 ランプカバー
10、210 グローブ
11、211 開口部
20、20A、20B、20C、20D、200、201、220、220A、220B、220C、220D、320、420 LEDモジュール
20a 主LEDモジュール
20b 副LEDモジュール
21、21X、21Y 基板
21a、21b、21Xa、21Xb、21Ya、21Yb、221a、221b、242a1 貫通孔
22a、22b、22c、22d、32a、32b、222 LED
23a 第1封止部材
23b 第2封止部材
23c 第3封止部材
23d 第4封止部材
23A、223、223a 封止部材
24a 第1ダミー封止部材
24b 第2ダミー封止部材
24c 第3ダミー封止部材
24d 第4ダミー封止部材
24X、24Y ダミー封止部材
25 ツェナーダイオード
26、36、224 金属配線
27、37 ワイヤー
28、38 端子
29、39 導電性接着部材
30 口金
33a 第5封止部材
33b 第6封止部材
34a 第5ダミー封止部材
34b 第6ダミー封止部材
40、40A、241 支柱
41、241a 主軸部
42、241b 固定部
42b、241b1 突起部
50 支持台
60 樹脂ケース
61 第1ケース部
62 第2ケース部
70、270a~270b リード線
80 点灯回路
90 接着剤
122a サファイア基板
122b 窒化物半導体層
122c カソード電極
122d アノード電極
122e、122f ワイヤーボンド部
122g チップボンディング材
221 基台
223b 波長変換部材
225 金ワイヤー
227、228、229、527 蛍光体層
227a、228a、229a 中央部
227b、228b、229b 端部
230 結合部材
230a 縦溝部
230b 鍔部
230c 凸部
240 支持部材
242 台座
242a 径小部
242b 径大部
242b1 凹部
250 筐体
251 内側筐体部
251a 回路キャップ部
251b 回路ホルダ部
252 外側筐体部
252a 外郭部
252b 螺合部
260 金属部材
270 駆動回路
271 回路基板
272 回路素子
280 口金
290 ネジ
323、423 蛍光体含有樹脂
324 マスク
400 反射部材
500 黒色マスク
ML1 第1主発光部
ML2 第2主発光部
ML3 第3主発光部
ML4 第4主発光部
SL1 第1副発光部
SL2 第2副発光部
SL3 第3副発光部
SL4 第4副発光部
WC1 第1波長変換部材
WC2 第2波長変換部材
WC3 第3波長変換部材
WC4 第4波長変換部材
WC5 第5波長変換部材
WC6 第6波長変換部材
WC7 第7波長変換部材
WC8 第8波長変換部材
Claims (34)
- 基板と、
前記基板上に配置された第1発光素子と、
前記基板上に設けられ、前記第1発光素子が発する光の波長を変換する第1波長変換部材と、
前記第1波長変換部材と隣り合うように設けられ、前記第1発光素子が発する光の波長を変換する第2波長変換部材とを備え、
前記第1波長変換部材内には、前記第1発光素子が存在し、
前記第2波長変換部材内には、当該第2波長変換部材によって波長が変換される光を発する発光素子が存在しない
発光装置。 - 前記第1発光素子は、前記基板上に列をなして複数配置され、
前記第1波長変換部材は、前記基板上に線状に設けられ、
前記第2波長変換部材は、前記基板上に前記第1波長変換部材と並行して線状に設けられている
請求項1に記載の発光装置。 - 前記第1波長変換部材は、前記複数の第1発光素子が発する光の波長を変換する第1波長変換材と、当該第1波長変換材を含むとともに前記複数の第1発光素子を一括封止して線状に設けられた第1封止部材とからなり、
前記第2波長変換部材は、前記複数の第1発光素子が発する光の波長を変換する第2波長変換材と、当該第2波長変換材を含む第1ダミー封止部材とからなる
請求項2に記載の発光装置。 - 前記第1ダミー封止部材における前記第2波長変換材の濃度は、前記第1封止部材における前記第1波長変換材の濃度以下である
請求項3に記載の発光装置。 - 前記第1ダミー封止部材の長さは、前記第1封止部材の長さ以下である
請求項3に記載の発光装置。 - 前記第1波長変換材及び前記第2波長変換材は、蛍光体粒子であり、
前記第1封止部材及び前記第1ダミー封止部材は、樹脂である
請求項3~5のいずれか1項に記載の発光装置。 - 前記第1ダミー封止部材は、非発光の電子部品を内在している
請求項3~6のいずれか1項に記載の発光装置。 - 前記第1波長変換部材の長手方向に垂直な断面における当該第1波長変換部材の形状は、略半円形であり、
前記複数の第1発光素子は、一列配置されており、
前記複数の第1発光素子の各々は、前記第1波長変換部材の幅の略中心を通る
請求項2~7のいずれか1項に記載の発光装置。 - さらに、
前記複数の第1発光素子の列方向に沿って前記基板上に列をなして配置された複数の第2発光素子と、
前記基板上に線状に設けられた、前記複数の第2発光素子が発する光の波長を変換する第3波長変換部材とを備え、
前記第3波長変換部材内には、前記複数の第2発光素子が存在し、
前記第2波長変換部材は、前記第1波長変換部材と前記第3波長変換部材との間に設けられ、前記複数の第2発光素子が発する光の波長も変換する
請求項2に記載の発光装置。 - 前記第1波長変換部材は、前記複数の第1発光素子が発する光の波長を変換する第1波長変換材と、当該第1波長変換材を含むとともに前記複数の第1発光素子を一括封止して線状に設けられた第1封止部材とからなり、
前記第2波長変換部材は、前記複数の第1発光素子及び前記複数の第2発光素子が発する光の波長を変換する第2波長変換材と、当該第2波長変換材を含む第1ダミー封止部材とからなり、
前記第3波長変換部材は、前記複数の第2発光素子が発する光の波長を変換する第3波長変換材と、当該第3波長変換材を含むとともに前記複数の第2発光素子を一括封止して線状に設けられた第2封止部材とからなる
請求項9に記載の発光装置。 - 前記複数の第1発光素子と前記複数の第2発光素子とは同じ色の光を発する発光素子であり、
前記第1ダミー封止部材における前記第2波長変換材の濃度は、前記第1封止部材における前記第1波長変換材の濃度以下、及び、前記第2封止部材における前記第3波長変換材の濃度以下である
請求項10に記載の発光装置。 - 前記第1封止部材における前記第1波長変換材の濃度と前記第2封止部材における前記第3波長変換材の濃度とは略同じである
請求項10又は11に記載の発光装置。 - 前記第1波長変換材、前記第2波長変換材及び前記第3波長変換材は、蛍光体粒子であり、
前記第1封止部材、前記第1ダミー封止部材及び前記第2封止部材は、樹脂である
請求項10~12のいずれか1項に記載の発光装置。 - 前記第1波長変換部材の長手方向に垂直な断面における当該第1波長変換部材の形状は、略半円形であり、
前記第3波長変換部材の長手方向に垂直な断面における当該第3波長変換部材の形状は、略半円形であり、
前記複数の第1発光素子及び前記複数の第2発光素子は、それぞれ一列配置されており、
前記複数の第1発光素子の各々は、前記第1波長変換部材の幅の略中心を通り、
前記複数の第2発光素子の各々は、前記第3波長変換部材の幅の略中心を通る
請求項9~13のいずれか1項に記載の発光装置。 - さらに、
前記複数の第2発光素子の列方向に沿って前記基板上に列をなして配置された複数の第3発光素子及び複数の第4発光素子と、
前記第3波長変換部材に隣接して前記基板上に線状に設けられた、前記複数の第3発光素子が発する光の波長を変換する第4波長変換部材と、
前記基板上に前記第4波長変換部材と並行して線状に設けられた、前記複数の第3発光素子及び前記複数の第4発光素子が発する光の波長を変換する第5波長変換部材と、
前記第5波長変換部材に隣接して前記基板上に線状に設けられた、前記複数の第4発光素子が発する光の波長を変換する第6波長変換部材とを備え、
前記第4波長変換部材内には、前記複数の第3発光素子が存在し、
前記第6波長変換部材内には、前記複数の第4発光素子が存在し、
前記第5波長変換部材は、前記第4波長変換部材と前記第6波長変換部材との間に設けられ、
前記第5波長変換部材内には、当該第5波長変換部材によって波長が変換される光を発する発光素子が存在しない
請求項9に記載の発光装置。 - 前記第4波長変換部材は、前記複数の第3発光素子が発する光の波長を変換する第4波長変換材と、当該第4波長変換材を含むとともに前記複数の第3発光素子を一括封止して線状に設けられた第3封止部材とからなり、
前記第5波長変換部材は、前記複数の第3発光素子及び前記複数の第4発光素子が発する光の波長を変換する第5波長変換材と、当該第5波長変換材を含む第2ダミー封止部材とからなり、
前記第6波長変換部材は、前記複数の第4発光素子が発する光の波長を変換する第6波長変換材と、当該第6波長変換材を含むとともに前記複数の第4発光素子を一括封止して線状に設けられた第4封止部材とからなる
請求項15に記載の発光装置。 - さらに、前記第3波長変換部材と前記第4波長変換部材との間に設けられた第7波長変換部材を備え、
前記第7波長変換部材は、前記複数の第2発光素子及び前記複数の第3発光素子が発する光の波長を変換する第7波長変換材と、当該第7波長変換材を含む第3ダミー封止部材とからなり、
前記第7波長変換部材内には、当該第7波長変換部材によって波長が変換される光を発する発光素子が存在しない
請求項16に記載の発光装置。 - さらに、前記第1波長変換部材、前記第3波長変換部材、前記第4波長変換部材及び前記第6波長変換部材の少なくとも1つの長手方向の両側に設けられた第8波長変換部材を備え、
前記第8波長変換部材は、前記複数の第1発光素子、前記複数の第2発光素子、前記複数の前記第3発光素子及び前記第4発光素子の少なくとも1つが発する光の波長を変換する第8波長変換材と、当該第8波長変換材を含む第4ダミー封止部材とからなり、
前記第8波長変換部材内には、当該第8波長変換部材によって波長が変換される光を発する発光素子が存在しない
請求項16又は17に記載の発光装置。 - 前記第1波長変換部材は、前記第1発光素子の少なくとも一部を覆うように配置され、
前記第2波長変換部材は、前記第1発光素子からの距離が前記第1波長変換部材よりも遠い位置に配置され、
前記第1発光素子は、供給される電流の大きさの変化によって調光が制御され、
前記第2波長変換部材における前記第1発光素子が発する光の波長を変換する度合いを示す第2波長変換量は、前記第1波長変換部材における前記第1発光素子が発する光の波長を変換する度合いを示す第1波長変換量よりも大きい
請求項1に記載の発光装置。 - 前記第1波長変換部材は、前記第1発光素子を封止する封止部材であり、
前記第2波長変換部材は、前記基板上の、前記第1波長変換部材の側方に配置された樹脂である
請求項19に記載の発光装置。 - 前記第2波長変換部材は、前記第1波長変換部材よりも含有する蛍光体粒子の濃度が高い
請求項20に記載の発光装置。 - 前記基板は、透光性を有し、
前記発光装置は、さらに、
前記基板と前記第1発光素子との間に形成された蛍光体層である第3波長変換部材を備え、
前記第3波長変換部材は、前記第1発光素子から遠ざかるほど前記第1発光素子が発する光の波長変換量が大きくなるように形成されている
請求項20又は21に記載の発光装置。 - 前記第3波長変換部材は、前記第1発光素子から遠ざかるほど厚みが厚くなるように形成されている
請求項22に記載の発光装置。 - 前記第3波長変換部材は、前記第1発光素子から遠ざかるほど含有する蛍光体粒子の濃度が高くなるように形成されている
請求項22に記載の発光装置。 - 前記基板は、透光性を有し、
前記第1波長変換部材と前記第2波長変換部材とは、前記基板と前記第1発光素子との間に一体に形成された蛍光体層である
請求項19に記載の発光装置。 - 前記第2波長変換部材は、前記第1波長変換部材よりも厚みが厚い
請求項25に記載の発光装置。 - 前記第2波長変換部材は、前記第1波長変換部材よりも含有する蛍光体粒子の濃度が高い
請求項25に記載の発光装置。 - 請求項1~27のいずれか1項に記載の発光装置と、
透光性のグローブと、
前記グローブの内方に向かって延びるように設けられた支柱とを備え、
前記発光装置は、前記グローブ内に配置され、かつ、前記支柱に固定されている
電球形ランプ。 - 前記発光装置は、前記基板の前記複数の第1発光素子が設けられた面である第1の面が前記グローブの頂部側に位置するように前記支柱に固定されている
請求項28に記載の電球形ランプ。 - 前記発光装置は、さらに、
前記基板の前記第1の面とは反対側の面である第2の面に列をなして配置された複数の第5発光素子と、
前記第2の面に線状に設けられた、前記複数の第5発光素子が発する光の波長を変換する第9波長変換部材とを備え、
前記第9波長変換部材内には、前記複数の第5発光素子が存在する
請求項29に記載の電球形ランプ。 - 前記発光装置は、さらに、
前記第2の面上に前記第9波長変換部材と並行して線状に設けられた、前記複数の第5発光素子が発する光の波長を変換する第10波長変換部材を備え、
前記第10波長変換部材内には、当該第10波長変換部材によって波長が変換される光を発する発光素子が存在しない
請求項30に記載の電球形ランプ。 - 前記第9波長変換部材は、前記複数の第5発光素子が発する光の波長を変換する第9波長変換材と、当該第9波長変換材を含むとともに前記複数の第5発光素子を一括封止して線状に設けられた第5封止部材とからなり、
前記第10波長変換部材は、前記複数の第5発光素子が発する光の波長を変換する第10波長変換材と、当該第10波長変換材を含む第5ダミー封止部材とからなる
請求項31に記載の電球形ランプ。 - 前記基板は、前記複数の第1発光素子が表面に設けられた主基板と、前記複数の第5発光素子が表面に設けられた副基板とから構成され、
前記主基板及び前記副基板は、前記複数の第1発光素子及び前記複数の第5発光素子が設けられていない裏面同士が対向するように配置されている
請求項30~32のいずれか1項に記載の電球形ランプ。 - 請求項28~33のいずれか1項に記載の電球形ランプを備える
照明装置。
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| JP2013552776A JP5627801B2 (ja) | 2012-08-22 | 2013-06-18 | 発光装置、電球形ランプ及び照明装置 |
| CN201390000101.8U CN203743911U (zh) | 2012-08-22 | 2013-06-18 | 发光装置、灯泡形灯以及照明装置 |
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| JP (1) | JP5627801B2 (ja) |
| CN (1) | CN203743911U (ja) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017522720A (ja) * | 2014-05-20 | 2017-08-10 | フィリップス ライティング ホールディング ビー ヴィ | 共形コーティングされた照明又はイルミネーションシステム |
| AU2020207798B2 (en) * | 2020-06-04 | 2022-04-21 | Xiamen Leedarson Lighting Co., Ltd. | Led bulb apparatus |
| JP2023529961A (ja) * | 2020-06-18 | 2023-07-12 | シグニファイ ホールディング ビー ヴィ | 視認性が改善されたフィラメントランプ |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016143261A1 (ja) * | 2015-03-11 | 2016-09-15 | パナソニックIpマネジメント株式会社 | 発光装置、発光装置の製造方法 |
| JP2016171146A (ja) * | 2015-03-11 | 2016-09-23 | パナソニックIpマネジメント株式会社 | 発光装置、発光装置の製造方法 |
| TWI638116B (zh) | 2017-09-01 | 2018-10-11 | 液光固態照明股份有限公司 | Led燈泡及其製造方法 |
| EP3872393A4 (en) * | 2018-10-22 | 2022-05-25 | GCE Institute Inc. | Lighting device with power generation function |
| IT201900019820A1 (it) * | 2019-10-28 | 2021-04-28 | Novarino Luca | Lampada per esterni in bassa tensione |
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| WO2011111399A1 (ja) * | 2010-03-11 | 2011-09-15 | パナソニック株式会社 | 発光モジュール、光源装置、液晶表示装置および発光モジュールの製造方法 |
| WO2012086109A1 (ja) * | 2010-12-24 | 2012-06-28 | パナソニック株式会社 | 電球形ランプ及び照明装置 |
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- 2013-06-18 WO PCT/JP2013/003784 patent/WO2014030281A1/ja not_active Ceased
- 2013-06-18 CN CN201390000101.8U patent/CN203743911U/zh not_active Expired - Fee Related
- 2013-06-18 JP JP2013552776A patent/JP5627801B2/ja not_active Expired - Fee Related
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| JP2009021221A (ja) * | 2007-06-13 | 2009-01-29 | Sharp Corp | 線状光源装置、面発光装置、面状光源装置、および、液晶表示装置 |
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| JP2017522720A (ja) * | 2014-05-20 | 2017-08-10 | フィリップス ライティング ホールディング ビー ヴィ | 共形コーティングされた照明又はイルミネーションシステム |
| AU2020207798B2 (en) * | 2020-06-04 | 2022-04-21 | Xiamen Leedarson Lighting Co., Ltd. | Led bulb apparatus |
| JP2023529961A (ja) * | 2020-06-18 | 2023-07-12 | シグニファイ ホールディング ビー ヴィ | 視認性が改善されたフィラメントランプ |
Also Published As
| Publication number | Publication date |
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| JPWO2014030281A1 (ja) | 2016-07-28 |
| JP5627801B2 (ja) | 2014-11-19 |
| CN203743911U (zh) | 2014-07-30 |
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