WO2010058808A1 - Ledランプ - Google Patents
Ledランプ Download PDFInfo
- Publication number
- WO2010058808A1 WO2010058808A1 PCT/JP2009/069602 JP2009069602W WO2010058808A1 WO 2010058808 A1 WO2010058808 A1 WO 2010058808A1 JP 2009069602 W JP2009069602 W JP 2009069602W WO 2010058808 A1 WO2010058808 A1 WO 2010058808A1
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- WO
- WIPO (PCT)
- Prior art keywords
- led
- substrate
- light
- led lamp
- power supply
- Prior art date
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/0015—Fastening arrangements intended to retain light sources
- F21V19/002—Fastening arrangements intended to retain light sources the fastening means engaging the encapsulation or the packaging of the semiconductor device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- 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
- F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
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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
- F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
- F21K9/278—Arrangement or mounting of circuit elements integrated in the light source
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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
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/005—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips for several lighting devices in an end-to-end arrangement, i.e. light tracks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
- F21V23/026—Fastening of transformers or ballasts
-
- 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/75—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with fins or blades having different shapes, thicknesses or spacing
-
- 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
- F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
- F21V29/767—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having directions perpendicular to the light emitting axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0003—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being doped with fluorescent agents
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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
- 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
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/56—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving measures to prevent abnormal temperature of the LEDs
Definitions
- the present invention relates to an LED lamp that uses a light emitting diode (hereinafter referred to as LED) as a light source and can be attached to a general fluorescent lamp luminaire as an alternative to a fluorescent lamp.
- a light emitting diode hereinafter referred to as LED
- FIG. 35 shows a conventional LED lamp (see, for example, Patent Document 1).
- the LED lamp X shown in the figure includes a long rectangular substrate 91, a plurality of LEDs 92 mounted on the substrate 91, a tube 93 that accommodates the substrate 91, and a terminal 94.
- a wiring pattern (not shown) connected to the plurality of LEDs 92 and the terminals 94 is formed on the substrate 91.
- This LED lamp X is configured such that a plurality of LEDs 92 can emit light by fitting a terminal 94 into an insertion port of a socket of a general fluorescent lamp lighting fixture.
- a general fluorescent lamp illuminator is a luminaire widely used for indoor general illumination.
- a commercial 100V or 200V power supply is used, and a straight tube fluorescent lamp defined in JIS C7617 or A lighting fixture to which a ring-shaped fluorescent lamp specified in JIS C7618 is attached.
- the circuit 95 mounted on the substrate 91 is for converting alternating current supplied from a commercial power source into direct current and supplying it to the LED as a constant current, and includes a plurality of power supply components.
- the circuit 95 having such a configuration is preferably provided in the vicinity of the terminal 94 which is a power supply unit, that is, in the vicinity of both ends of the LED lamp X.
- the circuit 95 is mounted on the back surface of the substrate 91 (the surface opposite to the surface on which the plurality of LEDs 92 are mounted). Considering the influence of heat generated by the LED 91, the plurality of power supply components constituting the circuit 95 are not arranged at positions overlapping the LED 91 as shown in FIG. It is preferable to dispose them at both ends in the longitudinal direction. However, if the plurality of power supply components are arranged so as not to overlap the LEDs 92, the LEDs 92 cannot be arranged near both ends of the substrate 91. As a result, the non-light emitting area in the LED lamp X increases, which is not preferable.
- the base plate 94 is inserted into both ends of the tube 93 while the substrate 91 is inserted into the tube 93 and the relative positional relationship between the tube 93 and the substrate 91 is kept constant. It is necessary to install. Therefore, in the conventional LED lamp X, assembly work at the time of manufacture is troublesome.
- the directivity of the light of the LED 92 is strong, so that it is not possible to irradiate light uniformly from the ceiling to the entire lower part, for example, by simply mounting such an LED 92 on one substrate 91. There were difficulties.
- the conventional LED lamp X when used as an alternative to a straight tube fluorescent lamp, for example, for FL40W having a long tube length (tube length 1198 mm), the light emitting area by the LED 92 extends over about 1100 mm corresponding to almost the entire length of the tube length. It is necessary to secure.
- the arrangement pitch of the LEDs 92 when the arrangement pitch of the LEDs 92 is increased, a relatively dark portion is formed between adjacent LEDs, and uneven illuminance is likely to occur. In order to eliminate such illuminance unevenness, the number of LEDs 92 may be increased and the arrangement pitch of the LEDs 92 may be reduced.
- the arrangement pitch of the LEDs 92 may not be reduced to such an extent that the illuminance unevenness between the adjacent LEDs 92 is eliminated. there were.
- the LED lamp X heat is generated when the plurality of LEDs 92 emit light. For this reason, the temperatures of the substrate 91 and the LED 92 are unduly increased, and the wiring pattern on the surface of the substrate 91 and the LED 92 may be damaged.
- the circuit 95 is mounted on the back surface of the substrate 91 (the surface opposite to the surface on which the plurality of LEDs 92 are mounted). Considering the influence of heat generated by the LED 92, the plurality of power supply components constituting the circuit 95 are not arranged at positions overlapping the LED 92 as shown in FIG. It is preferable to dispose them at both ends in the longitudinal direction. That is, it is preferable that the plurality of power supply components are arranged separately in a region (power supply region) different from a region (light source region) where the plurality of LEDs 92 are arranged.
- the plurality of power supply components are arranged in the power supply region (both ends of the substrate 91) separately from the light source region in which the LEDs 92 are disposed, the LEDs 92 cannot be disposed in the vicinity of both ends of the substrate 91. As a result, the vicinity of both end portions of the substrate 91 becomes a non-light emitting region, which may cause a decrease in illumination quality of the fluorescent lamp X, which is not preferable.
- FIG. 36 is a block diagram for explaining an LED lighting apparatus in which an LED lamp is attached to a conventional general fluorescent lamp lighting fixture.
- the general fluorescent lamp illuminator is a luminaire widely used mainly for indoor general illumination. For example, in Japan, a commercial 100V or 200V power source is used, and a straight tube fluorescent lamp defined in JIS C7617 is used. A lighting fixture to which a lamp or a ring-shaped fluorescent lamp specified in JIS C7618 is attached.
- the LED lighting device B ′ includes a general fluorescent lamp luminaire C and an LED lamp A ′.
- the general fluorescent lamp luminaire C is intended to input an alternating current from a commercial 100V power source D to an attached fluorescent lamp.
- the general fluorescent lamp luminaire C includes a ballast C1.
- the ballast C1 generates a high voltage in the fluorescent lamp to start discharge, and stabilizes the current input to the fluorescent lamp after the start of discharge.
- the general fluorescent lamp luminaire C is classified into a starter type, a rapid start type, an inverter type, and the like according to the lighting method of the fluorescent lamp.
- the LED lamp A ′ is attached, the voltage, current and frequency output from the ballast C1 differ depending on the method even if the same rated voltage is set. Moreover, even if it is the same system, the characteristic of the ballast C1 differs little by little for every kind of general fluorescent lamp lighting fixture C.
- the LED lamp A ′ emits light when an alternating current is input from a commercial 100V power source D via a ballast C1 of a general fluorescent lamp luminaire C.
- the LED lamp A ′ includes a rectifier circuit 100, a protective component 200, and an LED light emitting circuit 300.
- the rectifier circuit 100 converts the alternating current input from the ballast C1 into a direct current and outputs the direct current to the LED light emitting circuit 300.
- the LED light emitting circuit 300 causes the white LED 310 a included in the LED light emitting circuit 300 to emit light by the direct current input from the rectifier circuit 100.
- the standard and number of series of white LEDs 310a constituting the LED array 310 and the resistance value of the resistor 320 are determined in accordance with the rated voltage of the general fluorescent lamp luminaire C to be attached.
- the LED light emitting circuit 300 is provided with a resistor 320 in order to prevent an overcurrent from flowing through the white LED 310a.
- a constant current circuit such as a constant current diode in series with the input side of the white LED 310a.
- the resistor 320 consumes waste by converting electric power to heat, so that the power use efficiency is reduced.
- Japanese Utility Model Publication No. 6-54103 Japanese Utility Model Publication No. 6-54103
- the present invention has been conceived under the circumstances described above, and it is an object of the present invention to provide an LED lamp capable of obtaining an appropriate amount of light with a smaller number of LEDs or with lower power consumption. It is said.
- the present invention takes the following technical means.
- the LED lamp provided by the present invention includes a plurality of LED light sources and a substrate on which the plurality of LED light sources are mounted in a row, and a guide covering the plurality of LED light sources is provided on the substrate.
- a light body is provided, and the light guide is in close contact with each of the plurality of LED light sources.
- the light guide has a semicircular cross section.
- a light-transmitting cover that adheres to the entire outer surface of the light guide is further provided.
- a heat radiating member joined to a surface of the substrate opposite to the mounting surface on which the plurality of LED light sources are mounted is further provided.
- the light guide includes a fluorescent material that emits light having a wavelength different from that of the light from the LED light source when excited by the light from the LED light source.
- the LED light source includes an LED module including an LED bare chip and a resin package for sealing the LED bare chip.
- the LED light source comprises an LED bare chip mounted on the substrate.
- the first substrate and the second substrate are arranged at an interval in the thickness direction of the substrate, and the first substrate is the center of the case.
- the second substrate is located closer to the central axis than the first substrate.
- the first substrate is in a position biased to the opposite side of the mounting surface of the plurality of LEDs with respect to the central axis of the case.
- the present invention further includes a heat dissipating member extending in parallel with the central axis of the case, and a pair of caps attached to both ends of the heat dissipating member.
- the second substrate is disposed so as to be separated from the heat radiating member while being stacked on the heat radiating member.
- the second substrate is supported by the heat dissipation member.
- the plurality of power supply components include an AC / DC converter that converts alternating current into direct current.
- the case has a straight tube shape, and the case includes a protruding piece protruding inward so as to form a pair in a plane parallel to the central axis of the case.
- a protruding piece protruding inward so as to form a pair in a plane parallel to the central axis of the case.
- An LED lighting device includes a ballast for stabilizing an alternating current input from an alternating current power supply, and a rectifier circuit that performs full-wave rectification on the alternating current input from the ballast.
- a plurality of LEDs that receive a direct current from the rectifier circuit to emit light, a substrate on which the LEDs are mounted, and a light-emitting circuit that is directly connected to the rectifier circuit, and includes a connection line that connects each LED. It is characterized by that.
- the light emitting circuit has a plurality of LED rows in which a plurality of LEDs are connected in series, and the plurality of LED rows are connected in parallel.
- a protective component is connected between the rectifier circuit and the light emitting circuit.
- the protective component is a Zener diode or a fuse.
- An LED lamp provided by still another aspect of the present invention is an LED lamp including an LED substrate on which a plurality of LED modules are mounted, and a cylindrical translucent tube that accommodates a plurality of the LED substrates.
- the plurality of LED substrates are accommodated so as to form a cross-sectional fan shape together with a part of the light-transmitting tube when the inside of the light-transmitting tube is viewed in the axial direction. .
- the plurality of LED substrates are formed by dividing the internal space of the light-transmitting tube by a line along the diameter in a state where the inside of the light-transmitting tube is viewed in the axial direction. It is arranged in the semicircle area.
- the plurality of LED substrates are arranged so that the mounting surface of the LED module faces a semicircular region which is the other of the one semicircular region.
- a heat radiating member is provided on the back surface of the plurality of LED substrates opposite to the mounting surface.
- a through hole is formed in the heat radiating member in the axial direction of the light transmitting tube.
- an LED lamp comprising a plurality of LEDs arranged at a predetermined interval, wherein the plurality of LEDs includes a plurality of first LEDs and the first LEDs.
- a plurality of second LEDs with lower power consumption, and each of the second LEDs is arranged between the adjacent first LEDs.
- each said 2nd LED is arrange
- each of the second LEDs is disposed at a central position between the adjacent first LEDs.
- each of the plurality of first LEDs has a configuration in which a plurality of first LED series sections connected in series are connected in parallel, while the plurality of second LEDs are connected in parallel.
- the LED is configured by a second LED series part connected in series, and the first LED series part and the second LED series part are connected in parallel.
- the quantity of the said 2nd LED which comprises the said 2nd LED serial part is larger than the quantity of the said 1st LED which comprises the said 1st LED serial part. is there.
- An LED lamp provided by yet another aspect of the present invention is an LED lamp including an LED light emitting element, and a heat radiating member for supporting the LED light emitting element, and an insulation layered on the surface of the heat radiating member. And a metal wiring layer laminated on the surface of the insulating layer and electrically connected to the LED light emitting element.
- the insulating layer is composed of SiO 2.
- the LED light emitting device includes an LED module having the LED light emitting device, a lead on which the LED light emitting device is mounted, and a package resin covering the LED light emitting device and the lead. The back surface of is joined to the metal wiring layer.
- An LED lamp provided by yet another aspect of the present invention is an LED lamp including an LED light emitting element, and is provided in contact with the heat radiating member for supporting the LED light emitting element, the heat radiating member, An insulating base film layer, and a substrate having at least a metal wiring layer formed on the base film layer, wherein the LED light-emitting element is electrically connected to the metal wiring layer.
- the base film layer is made of polyimide.
- the LED light emitting device includes an LED module including the LED light emitting device, a lead for mounting the LED light emitting device on a surface thereof, and a package resin that covers the LED light emitting device and the lead. The back surface of is joined to the metal wiring layer.
- the substrate is a flexible wiring substrate.
- a method of manufacturing an LED lamp comprising: a plurality of LED light emitting elements; a heat radiating member for supporting the LED light emitting elements; A flexible wiring board having a base film layer and a metal wiring layer formed on the base film layer, and a step of forming the heat dissipation member in a predetermined shape, A step of mounting a plurality of LED light emitting elements on a long base material that is the base of the flexible wiring board, in which a metal wiring layer is formed in advance as a wiring pattern, and a base material on which the LED light emitting elements are mounted Cutting the length of the heat dissipation member, and mounting the flexible wiring board formed by cutting the heat dissipation member on the heat dissipation member. It is characterized in that.
- an LED lamp includes a plurality of LEDs disposed in a light source region, a plurality of power supply components disposed in a power supply region, the plurality of LEDs, and the plurality of power supply components. And an auxiliary light source means for irradiating light from the range corresponding to the power supply region in the case.
- the auxiliary light source means includes an additional LED arranged in the power source region.
- the auxiliary light source unit is formed in a light introducing portion for introducing light from the additional LED into the inside, and a partial cylindrical shape along the inner surface of the case, and the light from the light introducing portion.
- a light emitting member that emits light from the light emitting surface of the outer portion while proceeding.
- the auxiliary light source means is formed in a partial cylindrical shape along the inner surface of the case and a light introducing portion for introducing light from at least one of the plurality of LEDs into the inside. And a light emitting member that emits light from the light emitting surface of the outer portion while advancing light from the light introducing portion.
- the inner part of the light emitting part is a light reflecting surface that reflects the light introduced from the light introducing part toward the light emitting surface.
- the plurality of LEDs are mounted on one surface of the first substrate, and the plurality of power supply components are mounted on both surfaces of the second substrate.
- the case is a straight tube having a circular cross section, and the first substrate and the second substrate are arranged at an interval in the thickness direction of the substrate.
- the first substrate is located in a position radially deviated from the central axis of the case, and the second substrate is located closer to the central axis than the first substrate.
- the case is integrally formed with projecting pieces projecting inward so as to form a pair in a plane parallel to the central axis of the case.
- the radial movement relative to the case is restricted by the protruding piece.
- the case is integrally formed with projecting pieces projecting inward so as to form a pair in a plane parallel to the central axis of the case.
- the movement with respect to the case is restricted by the protruding piece.
- the movement of the substrate on which the plurality of LEDs are mounted and the light guide member with respect to the case are restricted by the protruding pieces.
- FIG. 2 is a cross-sectional view taken along the line II-II in FIG. It is a top view which shows the LED lamp based on 2nd Embodiment of this invention. It is a partially cutaway perspective view of the LED lamp shown in FIG. It is sectional drawing which shows the LED lamp based on 3rd Embodiment of this invention. It is sectional drawing which shows the LED lamp based on 4th Embodiment of this invention. It is a perspective view which shows the LED lamp based on 5th Embodiment of this invention.
- FIG. 8 is a cross-sectional view of a principal part taken along line VIII-VIII in FIG.
- FIG. 1 It is an expanded sectional view which follows the IX-IX line of FIG.
- FIG. 1 is a block diagram which shows the LED lighting apparatus based on 6th Embodiment of this invention. It is a partially cutaway perspective view showing an LED lamp based on a seventh embodiment of the present invention. It is sectional drawing of the LED lamp shown in FIG. It is sectional drawing of the LED module provided in the LED lamp shown in FIG. It is sectional drawing which shows the LED lamp based on 8th Embodiment of this invention. It is sectional drawing which shows the LED lamp based on 9th Embodiment of this invention. It is a top view which shows the LED lamp based on 10th Embodiment of this invention.
- FIG. 17 is a sectional view taken along line XVII-XVII in FIG. 16. It is a principal part expanded sectional view which shows the irradiation state of the LED lamp shown in FIG. It is a circuit diagram which shows the electrical structure of the LED lamp shown in FIG. It is a perspective view which shows the LED lamp based on 11th Embodiment of this invention.
- FIG. 21 is a main part sectional view taken along line XXI-XXI in FIG. 20; It is principal part sectional drawing which shows the LED lamp based on 12th Embodiment of this invention. It is principal part sectional drawing which shows the LED lamp based on 13th Embodiment of this invention. It is a perspective view for demonstrating the manufacturing method of a LED lamp.
- FIG. 30 is a main-portion cross-sectional view along the line XXX-XXX in FIG. 29;
- FIG. 31 is an enlarged sectional view taken along the line XXXI-XXXI in FIG. 30. It is sectional drawing which shows the LED lamp based on 15th Embodiment of this invention.
- FIG. 33 is an enlarged sectional view taken along line XXXIII-XXXIII in FIG. 32. It is a perspective view which shows the LED lamp based on 16th Embodiment of this invention. It is sectional drawing which shows an example of the conventional LED lamp. It is a block diagram for demonstrating the LED lighting apparatus which attached the LED lamp to the conventional general fluorescent lamp lighting fixture.
- the LED lamp A1 of the present embodiment includes a plurality of LED modules 1 serving as light sources, a substrate 2, a light guide 3, a translucent cover 8, a heat radiating member 4, and a base 82, and is formed in an elongated cylindrical shape as a whole. Has been.
- This LED lamp A1 is used by being attached to a general fluorescent lamp luminaire, for example, as an alternative to a straight tube fluorescent lamp.
- each LED module 1 includes an LED bare chip 11, a resin package 12, a bonding wire 14, and a base member 15.
- the LED bare chip 11 is made of, for example, a GaN-based semiconductor and emits blue light.
- the resin package 12 is made of a translucent silicone resin, for example, and covers the LED bare chip 11.
- the resin package 12 includes, for example, a fluorescent material that emits yellow light when excited by blue light.
- the bonding wire 14 makes the LED bare chip 11 and the base member 15 conductive.
- the base member 15 is bonded to the substrate 2 in a state of being conductively connected to a wiring pattern (not shown) of the substrate 2.
- the substrate 2 is made of, for example, Al and has a long rectangular shape.
- a mounting surface 2 a of the substrate 2 on which the plurality of LED modules 1 are mounted is covered with a light guide 3.
- a heat radiating member 4 is provided on the back surface 2 b opposite to the mounting surface 2 a of the substrate 2.
- the light guide 3 is for efficiently diffusing the light from the LED module 1 outward, and covers the LED module 1 in close contact with the plurality of LED modules 1.
- the light guide 3 has a semicircular cross section, and is made of, for example, the same material as the base material of the resin package 12 of the LED module 1. Thereby, for example, blue light emitted from the LED bare chip 11 of the LED module 1 is radiated outward through the resin package 12 and the light guide 3 of the LED module 1.
- the translucent cover 8 is provided for diffusing light guided from the LED module 1 through the light guide 3 and covers the light guide 3 in a state of being in close contact with the light guide 3.
- the translucent cover 8 has a semicircular cross section, and is made of, for example, glass.
- the light guide 3 is provided so that there is no gap between the LED module 1 and the translucent cover 8. Therefore, reflection hardly occurs at the boundary between the light guide 3, the LED module 1, and the translucent cover 8. Therefore, the light from the LED module 1 can be efficiently guided outward.
- the heat dissipating member 4 is made of, for example, Al, which is the same material as the substrate 2, and is formed so as to extend from the back surface 2 b of the substrate 2 in the vertical direction.
- the plurality of heat dissipating members 4 are arranged in the short direction of the substrate 2 so as to be arranged at a predetermined interval, and come into contact with the outside air. Thereby, the heat radiating member 4 plays a role of efficiently dissipating heat generated by light emission of the LED module 1 to the outside air.
- the base 82 is a portion that fits into the insertion port of the general fluorescent lamp lighting fixture, and holds a terminal 85 for energization.
- the base 82 is attached to both ends of the substrate 2 in the longitudinal direction, and each terminal 85 communicates with a wiring pattern (not shown) on the substrate 2.
- Part of the blue light emitted from the LED bare chip 11 becomes yellow light due to the fluorescent material contained in the resin package 12.
- the yellow light and the remaining blue light are mixed with each other to generate white light.
- White light is emitted from the resin package 12 to the light guide 3, diffuses inside the light guide 3, and then radiates outward from the outer surface of the light guide 3 through the translucent cover 8. .
- the above-described fluorescent material may be contained in the light guide 3 instead of the resin package 12.
- an LED module 1 having a configuration in which red, green, and blue LED bare chips 11 are collectively sealed with a resin package 12 may be used.
- the resin package 12 made of the same material and the light guide 3 are in close contact, light passes from the resin package 12 to the light guide 3 with almost no refraction.
- the difference in refractive index between the silicone resin light guide 3 and the glass translucent cover 8 is relatively small. For this reason, light passes from the light guide 3 to the translucent cover 8 with almost no refraction. Therefore, the light from the LED module 1 is efficiently radiated outward with almost no irregular reflection on the inner surface side of the translucent cover 8. Thereby, in the LED lamp A1, the number of the LED modules 1 can be reduced, and the component cost can be reduced. Further, by suppressing the current supplied to the LED module 1, it is possible to reduce power consumption.
- 3 to 34 show other embodiments of the LED lamp according to the present invention. Note that the same or similar components as those according to the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.
- the LED lamp A2 of the present embodiment is formed in an annular shape as a whole, and is attached to a general fluorescent lamp luminaire as an alternative to a ring-shaped fluorescent lamp, for example.
- the translucent cover 8 is formed in an annular shape as a whole, and has a semicircular cross section.
- Each substrate 2 is curved according to the shape of the translucent cover 8.
- the plurality of substrates 2 are arranged along the translucent cover 8.
- a plate-like spacer may be provided between the substrate 2 and the substrate 2 or between the substrate 2 and the base 82 so as to fill the space between them.
- the heat radiating member 4 is curved according to the shape of the translucent cover 8.
- the light guide 3 is provided in close contact with the LED module 1 between the mounting surface 2a of the substrate 2 and the translucent cover 8 in the same manner as in the above-described embodiment.
- FIG. 5 shows an LED lamp according to the third embodiment of the present invention.
- the LED lamp A3 of the present embodiment is different from the above-described embodiment in that a light-transmitting cover is not provided and the LED module 1 is covered only by the light guide 3. According to such an LED lamp A3, it is possible to further reduce the cost by reducing the number of parts.
- FIG. 6 shows an LED lamp according to a fourth embodiment of the present invention.
- the LED lamp A4 of this embodiment is different from the above-described embodiment in that the LED bare chip 11 directly mounted on the substrate 2 is an LED light source.
- the light guide 3 covers these in close contact with the LED bare chip 11.
- the light-emitting body 3 may contain the fluorescent material described above while the emission color of the LED bare chip 11 is blue.
- the cost can be further reduced by reducing the number of components.
- the light from the LED bare chip 11 can be guided to the outside more efficiently.
- the present invention is not limited to the above embodiments.
- each part of the LED lamp according to the present invention can be varied in design in various ways.
- all or a part of the substrate may be accommodated in the translucent cover.
- the substrate and the heat dissipation member may be integrally formed.
- the LED lamp A5 of this embodiment includes a substrate 2, a plurality of LED modules 1, a heat dissipation member 4, a power supply substrate 5, a plurality of power supply components 6, a case 8, and a pair of caps 82.
- a straight tube fluorescent lamp it is used by being attached to a general fluorescent lamp luminaire.
- the substrate 2 is made of, for example, glass epoxy resin and is formed in a long rectangular shape. Wiring (not shown) is formed at appropriate positions on the surface of the substrate 2.
- substrate 2 is laminated
- the plurality of LED modules 1 are light sources of the LED lamp A5, and are mounted on the mounting surface 2a of the substrate 2. These LED modules 1 are arranged so as to be arranged at a predetermined interval along the longitudinal direction of the substrate 2 and are connected in series by, for example, a wiring (not shown).
- a module including a white LED configured in a surface-mount package type is preferably used.
- the heat dissipating member 4 is made of, for example, Al and has an elongated block shape extending along the longitudinal direction of the substrate 2. As clearly shown in FIG. 9, a plurality of concave portions 42 are formed on the surface of the heat radiating member 4, and have a shape having irregularities. The recess 42 is formed over substantially the entire length of the heat dissipation member 4 along the longitudinal direction of the substrate 2. These concave portions 42 can be formed by providing convex portions on a mold used when the heat radiating member 4 is formed.
- the power supply substrate 5 is made of, for example, glass epoxy resin and is formed in a long rectangular shape. Wiring (not shown) is formed at appropriate positions on the surface of the power supply substrate 5.
- the power supply substrate 5 is attached to the substrate 2 by a plurality of metal leads 51.
- one end of the plurality of leads 51 is fixed to both longitudinal ends of the power supply substrate 5 by soldering, and the other end is a pad (not shown) provided on the mounting surface 2 a of the substrate 2. Soldered to As a result, the power supply substrate 5 is disposed away from the substrate 2 or the heat dissipation member 4.
- the wiring of the substrate 2 and the wiring of the power supply substrate 5 are electrically connected via leads 51.
- the plurality of power supply components 6 function as a power supply circuit for lighting the LED module 1, and are mounted on both surfaces (upper surface 5 a and lower surface 5 b) of the power supply substrate 5.
- the plurality of power supply components 6 include an AC / DC converter 61 and other functional components 62 such as a capacitor and a resistor, and converts an alternating current supplied from a commercial power supply into a constant DC current and supplies it to the LED module 1. It is comprised as follows.
- the AC / DC converter 61 occupies a larger space than other components mounted on the power supply board 5.
- the case 8 is for housing the substrate 2, the heat radiating member 4, and the power supply substrate 5, and as shown well in FIG. 9, is a straight tubular cylinder having a circular cross section.
- a pair of projecting pieces 81 projecting inward are integrally formed on the inner surface of the case 8.
- Each of the protruding pieces 81 is deviated downward (in the radial direction) from the central axis O1 of the case 8 and protrudes in a plane parallel to the central axis O1, and extends in a direction along the central axis O1.
- the case 8 having such a structure is made of a synthetic resin such as polycarbonate, and is integrally formed by extrusion molding.
- the width dimension of the substrate 2 or the heat radiating member 4 and the vertical dimension of the heat radiating member 4 are defined so as to be accommodated below the protruding piece 81 in FIG. 9. .
- the mounting surface 2a abuts against the protruding piece 81, so that the movement of the substrate 2 with respect to the case 8 in the direction perpendicular to the central axis O1 (upward in the figure) is restricted.
- the lower part of the heat radiating member 4 is in contact with the lower inner surface of the case 8.
- the substrate 2 is in a position offset from the central axis O1 of the case 8 to the opposite side to the mounting surface 2a, and the power supply substrate 5 is positioned in the vicinity of the central axis O1 of the case 8.
- the width dimension of the power supply substrate 5 can be made larger than the width dimension of the substrate 2.
- the substrate 2, the heat dissipation member 4, and the power supply substrate 5 are accommodated in the case 8 by inserting the substrate 2 and the heat dissipation member 4 into the case 8 while sliding the substrate 2 and the heat dissipation member 4 in the space below the protruding piece 81.
- the pair of bases 82 is for supplying electric power from a commercial AC power source by being attached to a socket of a fluorescent lamp luminaire.
- the base 82 includes a bottomed cylindrical cover body 83, a resin block 84 housed and held in a hollow portion of the cover body 83, and two terminals 85.
- a recess 84 a is formed in the resin block 84, and the base 82 is attached to the heat dissipation member 4 by inserting the longitudinal end of the heat dissipation member 4 into the recess 84 a.
- the heat radiating member 4 is in the state supported by the pair of bases 82.
- a partially cylindrical gap is provided between the cover body 83 and the resin block 84, and both longitudinal ends of the case 8 are inserted into the gap.
- a gap is provided between the longitudinal end edge 8 a of the case 8 and the end edge 84 b of the resin block 84.
- the terminal 85 is provided so as to penetrate the cover body 83 and the resin block 84.
- One end portion (outer end portion) of the terminal 85 is a portion that fits into the insertion port of the socket of the fluorescent lamp lighting fixture, and the other end portion of the terminal 85 is electrically connected to the wiring of the substrate 2. Continuity is achieved.
- the LED module 1 can be made to emit light by supplying power after fitting the terminal 85 of the base 82 to the insertion port of the socket of the fluorescent lighting fixture.
- the power supply components 6 are mounted on both surfaces (upper surface 5a and lower surface 5b) of the power supply substrate 5, for example, compared to a case where the power supply components 6 are mounted only on the upper surface 5a of the power supply substrate 5.
- the mounting efficiency of the power supply component 6 is increased, and the area occupied by the power supply substrate 5 can be reduced. Therefore, the size of the power supply substrate 5 in the longitudinal direction along the central axis O1 of the case 8 can be reduced. As a result, in the LED lamp A5, the non-light emitting area can be reduced.
- the substrate 2 is in a position biased from the central axis O1 of the case 8 to the side opposite to the mounting surface 2a (the mounting surface of the LED module 1). For this reason, when the light emitted from the LED module 1 is irradiated to the outside through the case 8, the irradiated light is irradiated to a range exceeding 180 ° in the circumferential direction with respect to the central axis O ⁇ b> 1 of the case 8. Therefore, for example, compared with the case where the substrate 2 is arranged along the central axis O1 of the case 8, the range of irradiation light irradiated from the case 8 can be increased, and the irradiation range by the LED lamp A5 is substantially enlarged. can do. This contributes to reducing the non-light emitting area in the LED lamp A5.
- the power supply substrate 5 is located closer to the central axis O1 of the case 8 than the substrate 2. Therefore, the width dimension of the power supply substrate 5 that is perpendicular to the central axis O ⁇ b> 1 of the case 8 can be secured larger than the width dimension of the substrate 2. Therefore, the dimension in the longitudinal direction along the central axis O1 of the case 8 of the power supply substrate 5 can be made relatively small. This is suitable for making the non-light emitting area in the LED lamp A5 smaller.
- the substrate 2 is laminated on the heat dissipation member 4.
- produced at the time of lighting of the LED module 1 can be effectively escaped outside via the heat radiating member 4, and deterioration of the LED module 1 can be prevented.
- the heat radiating member 4 is extended along substantially the whole longitudinal direction of the case 8, it can function as a structural material of LED lamp A5. Therefore, according to the configuration including such a heat dissipation member 4, the rigidity of the LED lamp A5 can be appropriately ensured.
- the heat radiating member 3 is in contact with the inner surface of the case 6, the light source substrate 1 and the heat radiating member 3 are supported at three points with respect to the case 6. Thereby, relative positioning of the light source board
- the case 6 since the case 6 is made of a synthetic resin, it is less likely to be damaged than a fluorescent lamp configured with a glass tube. Further, as described above with reference to FIG. 8, a gap is provided between the tip edge 6 a of the case 6 and the edge 72 b of the resin block 72 of the base 7. For this reason, even when the case 6 is thermally expanded when the LED module 2 is turned on, the amount of elongation in the longitudinal direction of the case 6 can be absorbed, and the case 6 is not unduly deformed.
- the power supply substrate 5 is supported by the heat radiating member 4 through the substrate 2. That is, the power supply substrate 5 is supported in a stable state by the heat radiating member 4 that can function as a structural material, and can be disposed at a desired position in the case 8.
- an AC / DC converter 61 is included in the plurality of power supply components 6 that function as the power supply circuit of the LED lamp A5. For this reason, the direct current constant supplied to the LED module 1 can be created easily, and the configuration of the power supply circuit can be simplified.
- the AC / DC converter 61 occupies a relatively large size in space.
- the power supply substrate 5 is disposed away from the substrate 2 toward the central axis O1 of the case 8. For this reason, the AC / DC converter 61 mounted on the power supply substrate 5 can be accommodated in the case 8 without interfering with the case 8.
- a pair of protruding pieces 81 are provided inside the case 8. These projecting pieces 81 abut against the mounting surfaces 2a at both ends in the width direction of the substrate 2 to move the substrate 2 in a direction perpendicular to the center axis O1 of the case 8 (radial direction of the case 8) with respect to the case 8. Is regulated.
- the substrate 2 can be positioned relative to the case 8 simply by inserting the substrate 2 into the case 8. Therefore, the assembly work of the LED lamp A5 can be easily performed.
- FIG. 10 is a block diagram for explaining an LED lighting apparatus according to the sixth embodiment of the present invention.
- the LED lighting device B of the present embodiment includes a general fluorescent lamp luminaire C and an LED lamp A6.
- the general fluorescent lamp luminaire C includes a ballast B1 for controlling an alternating current flowing in the fluorescent lamp, a lighting tube (not shown) for lighting the fluorescent lamp, and a fluorescent lamp.
- a lighting tube for lighting the fluorescent lamp
- a fluorescent lamp for lighting the fluorescent lamp
- Four insertion ports for connecting the terminals are provided. Two of the outlets are for inputting an alternating current to the fluorescent lamp, and the other two are connected to the lighting tube.
- the wiring corresponding to the insertion port connected to the lighting tube is omitted in FIG.
- the general fluorescent lamp luminaire C substantially outputs an alternating current input from the commercial 100V power source D to the LED lamp A6 through the ballast B1.
- the LED lamp A6 is attached to a general fluorescent lamp luminaire C, and an alternating current is input from the ballast B1.
- the LED lamp A6 includes a rectifier circuit 63, a protective component 64, and an LED light emitting circuit 16.
- the rectifier circuit 63 converts the alternating current input from the ballast B1 into a direct current and outputs it.
- the rectifier circuit 63 is configured by a diode bridge (not shown) that performs full-wave rectification.
- the direct current output from the rectifier circuit 63 becomes a smoothed current by the function of the ballast B1 for stabilizing the current. Note that the configuration of the rectifier circuit 63 is not limited to this, and any structure that converts an alternating current into a direct current may be used.
- the protective component 64 is for preventing a current exceeding a predetermined value from flowing into the LED light emitting circuit 16.
- the Zener diode 2 is used, and is energized when a voltage higher than a predetermined voltage is applied so that no current flows through the LED light emitting circuit 16. Since the current flowing through the LED light emitting circuit 16 may be cut off, a fuse or the like may be used instead. These should be used for safety of use, and are not necessarily required as the configuration of the present invention.
- the LED light emitting circuit 16 receives light from the rectifier circuit 63 and emits light.
- the LED light emitting circuit 16 includes a plurality of LED rows 16a in which a plurality of white LEDs 11 are connected in series. Each LED row 16a is connected in parallel, and the cathode side is ground-connected. Each white LED 11 emits white light when a direct current is input from the anode side.
- the number of white LEDs 11 in the LED array 16a (hereinafter referred to as “LED serial number”) and the number of LED arrays 16a (hereinafter referred to as “LED parallel number”) It is determined in accordance with the characteristics of the ballast B1 of the general fluorescent lamp luminaire C to be attached.
- the power consumption varies depending on the number of LEDs in series, and the characteristics of the variation vary depending on the type of the ballast B1.
- the number of LEDs in series is appropriately determined according to the required power consumption. Since the output current of the ballast B1 is determined when the number of LEDs in series is determined, the parallel number is determined so that the current flowing through each white LED 11 is equal to or less than the rated current.
- the series number and the parallel number of LEDs are determined so that the current flowing through each white LED 11 becomes a predetermined current according to the characteristics of the ballast B1 of the general fluorescent lamp lighting fixture to be attached.
- the LED light emitting circuit 16 is not provided with a resistor or a constant current circuit, the current flowing through the white LED 11 can be set to a predetermined current.
- the power utilization efficiency can be improved as compared with the case where the resistor is provided, and the dark area where the LED light emitting circuit 16 does not emit light can be reduced and the manufacturing cost can be reduced as compared with the case where the constant current circuit is provided.
- the LED lighting device according to the present invention is not limited to the above-described embodiment.
- the specific configuration of each part of the LED lighting device according to the present invention can be varied in design in various ways.
- the present invention is not limited to this. Even when the general fluorescent lamp luminaire C is a rapid start type or an inverter type, the present invention can be applied by determining the number of series and the number of parallel LEDs according to the characteristics of the ballast B1.
- the shape of LED lamp A6 is not limited, It can be set as the shape match
- the shape of the LED lamp A6 when attaching to a general fluorescent lamp luminaire B for a straight tube fluorescent lamp, the shape of the LED lamp A6 is the same as that of the straight tube fluorescent lamp, and attached to a general fluorescent lamp luminaire C for a ring fluorescent lamp
- the LED lamp A6 may have the same shape as the annular fluorescent lamp.
- the LED light emitting circuit 16 may include a red LED, a green LED, and a blue LED instead of the white LED 11 to emit white light. Moreover, you may comprise so that light other than white light may be emitted.
- the LED lamp A7 of this embodiment includes a plurality of LED modules 1, two substrates 2, a translucent cover 8, a heat radiating member 4, and a base 82, and is formed in an elongated cylindrical shape as a whole.
- This LED lamp A7 has the same appearance as that of, for example, a straight tube fluorescent lamp, and is attached to a general fluorescent lamp luminaire.
- each LED module 1 includes an LED bare chip 11, a resin package 12 that protects the LED bare chip 11, and a base member 15 that supports the LED bare chip 11 in a state of being electrically connected to the LED bare chip 11 by bonding wires 14.
- the LED bare chip 11 is made of, for example, a GaN-based semiconductor and emits blue light.
- the resin package 12 is made of a translucent silicone resin. Such a resin package 12 includes, for example, a fluorescent material that emits yellow light when excited by blue light.
- the color rendering of the LED module can be enhanced by using a green phosphor and a red phosphor as the fluorescent material.
- the base member 15 is bonded to the substrate 2 in a state of being conductively connected to a wiring pattern (not shown) of the substrate 2.
- the substrate 2 is made of, for example, Al and has a long rectangular shape that can be inserted into the translucent cover 8 along the axial direction. As shown in FIG. 12, when the inside of the translucent cover 8 is viewed in the axial direction (direction passing through the paper surface), the two substrates 2 have a fan-shaped cross section together with a part of the upper side of the peripheral portion of the translucent cover 8. It is accommodated to make.
- the upper part of the periphery of the translucent cover 8 forms a fan-shaped arc, and the two substrates 2 form two fan-shaped sides.
- the angle formed between the two substrates 2 is substantially a right angle.
- Such two substrates 2 are arranged so as to fit in the upper semicircular region S1 when the internal space of the light-transmitting cover 8 is vertically divided by a line along the diameter (a straight line indicated by a virtual line in FIG. 12).
- the mounting surface 2a of each substrate 2 is generally directed to the lower semicircular region S2. Thereby, the light emitted from each substrate 2 travels in various directions, and most of the light travels from the inside of the translucent cover 8 through its peripheral portion and travels downward.
- a heat radiating member 4 is provided on the back surface of the substrate 2.
- the heat radiating member 4 is disposed in a fan-shaped space surrounded by a part of the upper part of the peripheral portion of the translucent cover 8 and the two substrates 2.
- the translucent cover 8 is made of, for example, polycarbonate resin and is formed in an elongated cylindrical shape by extrusion molding.
- the translucent cover 8 has a property of protecting the two substrates 2 and diffusing light from each substrate 2.
- Ribs 31 for positioning and fixing the substrates 2 are integrally provided on the inner peripheral surface of the translucent cover 8 on the upper peripheral portion.
- Each substrate 2 is bonded and fixed to the ribs 31 to form a fan shape in cross section together with a part of the upper side of the peripheral portion of the translucent cover 8.
- the heat radiating member 4 is made of, for example, Al of the same material as the substrate 2 and is integrated with the two substrates 2.
- the heat radiating member 4 is formed with a through hole 41 and a convex portion 42.
- the through hole 41 extends in the axial direction of the translucent cover 8.
- the recess 42 is formed in a pleat shape on the outer surface near the upper side of the peripheral portion of the translucent cover 8. Thereby, the heat radiating member 4 has a relatively large surface area in contact with air, and plays a role of efficiently dissipating heat generated in the substrate 2.
- the base 82 is a part that fits into an insertion port of a general fluorescent lamp luminaire, and has a terminal 85 for energization.
- the base 82 is attached to both ends in the longitudinal direction of the translucent cover 8 (only one end is shown in FIG. 11), and each terminal 85 leads to a wiring pattern (not shown) on the substrate 2. Yes.
- power is supplied to the LED module 1 on the substrate 2 and the LED is caused to emit light.
- LED lamp A7 for example, most of the light from the right substrate 2 shown in FIG. 12 travels from the inside of the translucent cover 8 to the lower right side, and further passes through the periphery of the translucent cover 8. Irradiated to the lower right.
- most of the light from the left substrate 2 shown in FIG. 12 travels from the inside of the translucent cover 8 to the lower left side, and further passes through the periphery of the translucent cover 8 and is irradiated to the lower left side.
- the LED lamp A7 when the LED lamp A7 is attached to the lighting fixture in a posture with the upper semicircular region S1 as the ceiling side, the light directed toward the ceiling is reduced, but efficiently toward the indoor space below the ceiling. Light is irradiated so as to diffuse.
- each LED module 1 has the directivity of light, light is emitted toward the lower side where each substrate 2 faces, so that it is as efficient and uniform as possible. Light can be irradiated.
- FIG. 14 shows an LED lamp according to the eighth embodiment of the present invention. Note that the same or similar components as those according to the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.
- the LED lamp A8 shown in Fig. 14 includes three substrates 2. These substrates 2 are housed so as to form a substantially fan-shaped cross section together with a part of the upper part of the periphery of the light-transmitting cover 8 when the inside of the light-transmitting cover 8 is viewed in the axial direction. A side and a short side provided at a position corresponding to the apex angle are formed. In this embodiment, the mounting surfaces 2a of the substrates 2 on both sides are directed obliquely downward, and the mounting surfaces 2a of the central substrate 2 are directed directly downward. Such three substrates 2 are arranged so as to fit in the upper semicircular region S1. According to such an LED lamp A8, since light is irradiated in more directions by each substrate 2, light can be irradiated more uniformly.
- FIG. 15 shows an LED lamp according to the ninth embodiment of the present invention.
- the angle formed between the two substrates 2 is set to be an obtuse angle. According to such an LED lamp A9, since the mounting surface 2a of each substrate 2 is directed downward, it is possible to irradiate light downward more efficiently.
- the present invention is not limited to the above embodiments.
- each part of the LED lamp according to the present invention can be varied in design in various ways.
- the light transmissive tube may have an opening in a portion close to the heat radiating member, and a part of the heat radiating member may be exposed from the light transmissive tube.
- the LED module may have a simple structure in which the LED chip is conductively connected to the wiring pattern of the LED substrate by wire bonding.
- the LED substrate and the heat dissipation member may be bonded to each other.
- a light guide that diffuses light from the LED substrate outward may be provided in the inner space of the light-transmitting tube.
- the LED lamp A10 of this embodiment includes a substrate 2, a plurality of LED modules 1, a translucent cover 8, and a pair of bases 82.
- a straight tube fluorescent lamp (tube length: 1198 mm) for FL40W.
- it is used by attaching to a general fluorescent lamp luminaire.
- the substrate 2 is made of, for example, glass epoxy resin and is formed in a long rectangular shape.
- the substrate 2 is preferably a multilayer substrate in which, for example, an insulating layer and a wiring layer are laminated, and the wiring layers are electrically connected through a through hole formed in the insulating layer. Yes.
- a predetermined pattern of wiring (not shown) is formed on the surface of the substrate 2 and the wiring layer sandwiched between the insulating layers.
- the plurality of LED modules 1 are light sources of the LED lamp A10 and are mounted on the front surface (upper surface 1a) of the substrate 2. These LED modules 1 are arranged in a straight line at a predetermined interval along the longitudinal direction of the substrate 2.
- the LED module 1 for example, a module that includes a white LED and is configured in a surface-mount package type is suitably used.
- heat radiation made of, for example, Al is formed on the back surface of the substrate 2 (surface opposite to the mounting surface of the LED module 1).
- a member may be provided.
- the plurality of LED modules 1 includes a plurality of first LED modules 17A and a plurality of second LED modules 17B.
- the first LED module 17A has a larger size and higher luminance than the second LED module 17B, and plays a main role as a light source of the LED lamp A10.
- the second LED module 17B consumes less power than the first LED module 17A and plays an auxiliary role as the light source of the LED lamp A10.
- the second LED module 17B is arranged for each of two or more (approximately four in the present embodiment) first LED modules 17A arranged in succession, as shown well in FIGS.
- each 2nd LED module 17B is provided in the intermediate position of the adjoining 1st LED module 17A.
- the pitch P1 between the first LED modules 17A arranged in succession is, for example, about 3.6 mm (see FIG. 18).
- the pitch P2 between the second LED module 17B and the first LED module 17A is smaller than the pitch P1, and is about 3.0 mm, for example.
- the translucent cover 8 is for accommodating the substrate 2 on which the LED module 1 is mounted, and has a straight tubular shape. On the inner surface of the translucent cover 8, for example, a protruding piece or groove (not shown) for locking the substrate 2 is provided. Accordingly, the substrate 2 is supported at a predetermined position with respect to the light-transmitting cover 8.
- the translucent cover 8 having such a configuration is made of a synthetic resin having translucency, such as polycarbonate, and is integrally formed by extrusion molding.
- the pair of caps 82 are for supplying power from a commercial AC power supply by being mounted on a socket of a fluorescent lamp lighting fixture, and are attached to both ends of the translucent cover 8 in the longitudinal direction.
- the base 82 has a bottomed cylindrical cover body 83 and two terminals 85.
- the terminal 85 is provided so as to penetrate the cover body 83.
- One end portion (outer end portion) of the terminal 85 is a portion that fits into the insertion port of the socket of the fluorescent lamp lighting fixture, and the other end portion of the terminal 85 is electrically connected to the wiring of the substrate 2. Continuity is achieved.
- the plurality of first LED modules 17A are configured such that a plurality of first LED series portions 2A in which a certain number of first LED modules 17A are connected in series are connected in parallel, as shown in FIG. In the present embodiment, a case where four first LED series parts 2A are connected in parallel is illustrated, and 65 first LED modules 17A are connected in series in each first LED series part 2A.
- the plurality of second LED modules 17B are configured by second LED series portions 2B connected in series as shown in FIG.
- the second LED series part 2B and the first LED series part 2A are connected in parallel.
- the quantity of the second LED modules 17B constituting the second LED series part 2B is larger than the quantity (65 in this embodiment) of the first LED modules 17A constituting the first LED series part 2A. Is done.
- the first LED series part 2A and the second LED series part 2B are connected to four diodes D1 to D4 constituting a bridge rectifier circuit.
- the circuit configuration shown in FIG. 19 is realized by wiring with a predetermined pattern on the substrate 2 configured as a multilayer substrate.
- the first LED module 17A has a configuration in which a plurality of the same number of first LED modules 17A connected in series are connected in parallel, so that the electrical conditions (voltage drop, current, and power consumption) are all the same. Uniform light emission.
- the first LED series part 2A is configured by 65 first LED modules 17A, an example of the drop voltage, current, and power consumption of each first LED module 17A is about 3V.
- the current consumption is about 20 mA and the power consumption is 60 mW.
- the voltage drop in the first LED series portion 2A is about 195V.
- the voltage drop in the second LED series part 2B is the same as the voltage drop of the first LED series part 2A.
- the second LED series part 2B is configured by 69 second LED modules 17B
- an example of the drop voltage, current, and power consumption of each second LED module 17B is about 2.7V.
- the current consumption is about 10 mA and the power consumption is 27 mW.
- the first LED modules 17A and the second LED modules 17B are increased.
- the raise of the power consumption as LED lamp A10 whole can be suppressed.
- the pitch P2 between the second LED module 17B and the first LED module 17A is set to be smaller than the pitch P1 between the first LED modules 17A arranged continuously. According to such a configuration, the illuminance unevenness can be efficiently reduced as compared with, for example, a case where all the LED modules 1 (the first LED module 17A and the second LED module 17B) are arranged at the same pitch.
- the plurality of first LED modules 17A have the same electrical conditions as described above, and all emit light uniformly. This is suitable for further reducing the illuminance unevenness of the LED lamp A10.
- the LED lamp according to the present invention is not limited to the embodiment described above.
- the specific configuration of each part of the LED lamp according to the present invention can be varied in design in various ways.
- the plurality of LED modules 1 are configured to be mounted on the substrate 2, but may be configured not to include the substrate.
- a heat dissipation member extending in the longitudinal direction of the LED lamp may be provided, and a plurality of LEDs may be mounted on the heat dissipation member via an insulating film.
- the LED lamp A11 of this embodiment includes a heat dissipation member 4, an insulating layer 44, metal wiring layers 45A and 32, the LED module 1, and a base 82.
- This LED lamp A11 is housed in a cylindrical case (not shown), and is used, for example, by being attached to a general fluorescent lamp lighting fixture as an alternative to a fluorescent lamp.
- the heat radiating member 4 is for supporting the LED module 1 by mounting the LED module 1 and dissipating heat generated in the LED module 1.
- the heat radiating member 4 is made of, for example, Al, and is formed in an elongated substantially plate shape extending along a predetermined direction.
- the heat radiating member 4 has a flat upper surface 4a.
- a plurality of recesses 42 are formed on the side surface of the heat dissipation member 4.
- the recess 42 is formed over the entire length of the heat radiating member 4 along the longitudinal direction of the heat radiating member 4.
- the recess 42 is formed to increase the surface area of the heat dissipation member 4.
- the concave portion 42 can be formed by providing a convex portion on a mold used when the heat radiating member 4 is formed.
- the heat radiating member 4 is formed with a plurality of through holes 41 penetrating along the longitudinal direction. The through hole 41 is also formed to increase the surface area of the heat dissipation member 4.
- An insulating layer 44 is laminated on the upper surface 4 a of the heat radiating member 4.
- the insulating layer 44 is for electrically insulating the heat dissipation member 4 and the metal wiring layers 45A and 32.
- the insulating layer 44 is made of, for example, SiO2.
- the thickness of the insulating layer 44 is, for example, about 100 ⁇ m.
- the insulating layer 44 can be formed using, for example, a CVD method or a PVD method typified by sputtering.
- a wiring pattern made of Cu for example, is formed on the upper surface 44a of the insulating layer 44.
- This wiring pattern is constituted by metal wiring layers 45A and 45B which are separated from each other.
- the metal wiring layers 45A and 45B are stacked on the upper surface 44a of the insulating layer 44.
- the metal wiring layers 45A and 45B are obtained by forming a film made of Cu on the upper surface 44a of the insulating layer 44 and etching it.
- the metal wiring layers 45A and 45B are covered with a protective layer 46.
- the metal wiring layers 45A and 45B are electrically insulated from the heat radiating member 4 by the insulating layer 44.
- the LED module 1 is supported by the heat radiating member 4.
- the LED module 1 includes an LED bare chip 11, metal leads 13A and 43 spaced apart from each other, wires 14, and a resin package 12. As shown in FIG. 20, a plurality of LED modules 1 are arranged so as to be aligned along the longitudinal direction of the heat dissipation member 4. Each LED module 1 is installed so that the main emission direction of the LED bare chip 11 faces the direction orthogonal to the upper surface 4 a of the heat radiating member 4.
- the LED bare chip 11 has a structure in which, for example, an n-type semiconductor and a p-type semiconductor and an active layer (both not shown) sandwiched between them are stacked.
- the LED bare chip 11 when the LED bare chip 11 is made of a GaN-based semiconductor, the LED bare chip 11 can emit blue light.
- the LED bare chip 11 includes two electrodes. These electrodes are formed on the lower surface and the upper surface of the LED bare chip 11.
- the LED bare chip 11 is mounted on the surface of the lead 13A.
- the back surface of the lead 13A is bonded to the metal wiring layer 45A.
- the electrode on the lower surface of the LED bare chip 11 is electrically connected to the metal wiring layer 45A.
- the electrode on the upper surface of the LED bare chip 11 is connected to the lead 13 ⁇ / b> B via the wire 14.
- the lead 13B is bonded to the metal wiring layer 45B. Thereby, the electrode on the upper surface of the LED bare chip 11 is electrically connected to the metal wiring layer 45B.
- Resin package 12 is for protecting LED bare chip 11 and wire 14.
- the resin package 45 is formed by using, for example, a silicone resin having translucency with respect to light emitted from the LED bare chip 11. Further, if a fluorescent material that emits yellow light by being excited by blue light is mixed in the resin package 12, white light can be emitted from the LED module 1. In place of the fluorescent material that emits yellow light, fluorescent materials that emit green light and red light may be mixed.
- the base 82 is connected to both ends in the longitudinal direction of the heat radiating member 4 and has a terminal 85.
- the terminal 85 is electrically connected to one of the metal wiring layers 45A and 32, respectively.
- the LED lamp A11 when the LED lamp A11 is turned on, heat is generated in the LED bare chip 11.
- the heat generated in the LED bare chip 11 is transmitted to the metal wiring layer 45A through the lead 13A.
- the heat transferred to the metal wiring layer 45 ⁇ / b> A is transferred to the heat dissipation member 4 through the insulating layer 44. Since the heat dissipation member 4 has a large contact area with the outside due to the recess 42 and the plurality of through holes 41, the transmitted heat can be quickly released to the outside.
- the LED lamp A11 preferably has a structure in which the heat generated in the LED bare chip 11 is preferably transmitted to the heat radiating member 4, and the heat transmitted to the heat radiating member 4 is easily released to the outside air. Therefore, LED lamp A11 can suppress that the temperature of LED module 1 rises too much, and can supply the stable illumination which is hard to break down.
- the heat dissipation member 4 plays a role as a substrate for mounting the LED module 1. Therefore, it is not necessary to prepare a substrate for mounting the LED module 1 separately from the heat radiating member 4. Therefore, it can contribute to the reduction of parts cost.
- FIG. 22 shows an LED lamp according to the twelfth embodiment of the present invention. Unlike the LED lamp A11 in which the LED bare chip 11 is electrically connected to the metal wiring layer 45A through the lead 13A, the LED lamp 12 of this embodiment is mounted directly on the metal wiring layer 45A. Is conducting.
- the LED bare chip 11 is mounted by being directly bonded to the metal wiring layer 45A without using the lead 13A.
- the wire 14 connected to the electrode on the upper surface of the LED bare chip 11 is directly wire-bonded to the metal wiring layer 45B.
- the LED bare chip 11 and the wire 14 are covered with a potting resin 12 formed by potting a translucent resin made of, for example, epoxy.
- the heat generated in the LED bare chip 11 is immediately transferred to the metal wiring layer 45A, and the heat transferred to the metal wiring layer 45A is transferred to the heat dissipation member 4 through the insulating layer 44. . Therefore, heat is transmitted to the heat radiating member 4 more quickly and effectively than the LED lamp A11 of the first embodiment in which the heat generated in the LED bare chip 11 is transmitted through the lead 13A. It can be further increased.
- FIG. 23 shows an LED lamp according to a thirteenth embodiment of the present invention.
- the LED lamp A13 of this embodiment is different from the LED lamps A11 and A12 of the eleventh and twelfth embodiments in that a flexible wiring board 24 is provided instead of the insulating layer 44 and the metal wiring layers 45A and 32.
- a film-like flexible wiring board 24 is provided on the upper surface 4 a of the heat dissipation member 4.
- the flexible wiring board 24 includes a base film layer 25, metal wiring layers 26 and 27 spaced apart from each other, and a cover coat layer 28, which are integrally laminated to form a film as a whole. is there.
- the base film layer 25 is a portion made of, for example, polyimide and functioning as an electrical insulating layer.
- the metal wiring layers 26 and 27 are made of Cu or the like and function as wiring patterns.
- the cover coat layer 28 is made of an electrically insulating material and is for protecting the metal wiring layers 26 and 27.
- the flexible wiring board 24 has a predetermined region 29 where the cover coat layer 28 does not cover the metal wiring layers 26 and 27. In this region 29, the metal wiring layers 26 and 27 are exposed to the outside. The metal wiring layers 26 and 27 exposed to the outside in the region 29 are used as external terminals, for example.
- the LED module 1 is mounted on the metal wiring layers 26 and 27 exposed to the outside in the region 29. That is, as shown in FIG. 23, the lead 13 ⁇ / b> A of the LED module 1 is connected to the metal wiring layer 26. On the other hand, the lead 13 ⁇ / b> B is connected to the metal wiring layer 27.
- heat is generated in the LED bare chip 11 when the LED lamp A13 is turned on.
- the heat generated in the LED bare chip 11 is transmitted to the metal wiring layer 26 of the flexible wiring board 24 through the lead 13A.
- the heat transferred to the metal wiring layer 26 is transferred to the heat dissipation member 4 through the base film layer 25.
- the heat radiating member 4 quickly releases the transmitted heat to the outside.
- the LED lamp A13 like the LED lamp A11 described above, preferably transmits heat generated in the LED bare chip 11 to the heat radiating member 4 and further has a structure that easily releases the heat transmitted to the heat radiating member 4 to the outside air. The same effects as the LED lamp A11 are achieved. Also in the LED lamp A13, the LED bare chip 11 may be directly mounted on the metal wiring layer 26 as shown by the LED lamp A12.
- the heat radiating member 4 is produced.
- a plate-shaped or bar-shaped aluminum member is cut into a predetermined size, and the recess 42 is formed by a mold or the like. Thereby, the heat dissipation member 4 having the illustrated shape is obtained.
- an elongated base material 24 ⁇ / b> A that is the source of the flexible wiring board 24 is prepared.
- the base material 24A is in the form of a film in which a plurality of portions to be the flexible wiring board 24 are continuously connected, and is wound around, for example, a reel member 24B.
- the base material 24A has a laminated structure composed of the base film layer 25, the metal wiring layers 26 and 27, and the cover coat layer 28 in advance, and a predetermined wiring pattern formed by the metal wiring layers 26 and 27 is also formed thereon. It is.
- the LED module 1 is mounted on the base material 24A.
- the LED module 1 is surface-mounted at a predetermined position of the exposed metal wiring layers 26 and 27 in a portion to be the flexible wiring board 24.
- a reflow process is performed. For example, after solder is printed on predetermined positions of the metal wiring layers 26 and 27 and the LED module 1 is arranged on the printed portions, the solder is melted by heating in a reflow furnace, whereby the LED module 1 is applied to the surface of the substrate 24A.
- the base material 24A on which the LED module 1 is mounted may be wound in a reel shape.
- the base material 24 ⁇ / b> A is cut to the length in the longitudinal direction of the heat radiating member 4 at the cutting position CL.
- the base material 24A may be cut before mounting the LED module 1 on the base material 24A.
- the portion to be the flexible wiring board 24 formed by cutting is attached to the upper surface 4a of the heat radiating member 4 with an adhesive or the like as shown in FIG. Then, a base 82 having a terminal 85 is attached to both ends of the heat radiating member 4 in the longitudinal direction. Through these steps, the LED lamp A13 shown in FIG. 23 is manufactured.
- the LED module 1 can be mounted on the flexible wiring board 24 after the flexible wiring board 24 is mounted on the heat dissipation member 4.
- the heat radiating member 4 is made of Al and is not suitable for the reflow process heated at a high temperature, in this manufacturing method, the flexible wiring board 24 is attached to the heat radiating member 4 as described above.
- the LED module 1 is mounted on the flexible wiring board 24.
- the use of the flexible wiring board 24 facilitates the production of the LED lamp. That is, in the LED lamp A11 described above, work such as film formation and etching and work for forming the protective layer 46 have occurred in order to form the insulating layer 44 and the metal wiring layers 45A and 45B. In LED lamp A13 of embodiment, those operations can be omitted by using flexible wiring board 24. Therefore, the manufacturing time and manufacturing process can be shortened.
- the LED lamp according to the present invention is not limited to the embodiment described above.
- the specific configuration of each part of the LED lamp according to the present invention can be varied in design in various ways.
- the shape of the heat dissipation member 4 is not limited to the shape described above.
- the insulating layer 44 does not need to cover the entire upper surface 4a of the heat radiating member 4, and may expose a part of the upper surface 4a of the heat radiating member 4.
- the LED lamp A14 of the present embodiment includes a substrate 2, a plurality of LED modules 1, a heat radiating member 4, a power supply substrate 5, a plurality of power supply components 6, a translucent cover 8, an auxiliary light source means 7, and a pair.
- a substrate 2 a plurality of LED modules 1, a heat radiating member 4, a power supply substrate 5, a plurality of power supply components 6, a translucent cover 8, an auxiliary light source means 7, and a pair.
- the substrate 2 is made of, for example, glass epoxy resin and is formed in a long rectangular shape. Wiring (not shown) is formed at appropriate positions on the surface of the substrate 2.
- substrate 2 is laminated
- the plurality of LED modules 1 are light sources of the LED lamp A14, and are mounted on the upper surface 2a of the substrate 2. These LED modules 1 are arranged so as to be arranged at a predetermined interval along the longitudinal direction of the substrate 2 and are connected in series by, for example, a wiring (not shown). Moreover, as shown in FIGS. 29 and 30, the plurality of LED modules 1 are arranged in the light source region 21 that is a position excluding both ends in the longitudinal direction of the substrate 2. As the LED module 1, for example, a module that includes a white LED and is configured in a surface-mount package type is suitably used.
- the heat dissipating member 4 is made of, for example, Al and has an elongated block shape extending along the longitudinal direction of the substrate 2. As clearly shown in FIG. 31, a plurality of concave portions 31 are formed on the surface of the heat dissipation member 4, and have a shape with irregularities. The recess 31 is formed over substantially the entire length of the heat dissipation member 4 along the longitudinal direction of the substrate 2. These concave portions 31 can be formed by providing convex portions on a mold used when the heat radiating member 4 is formed.
- the power supply substrate 5 is made of, for example, glass epoxy resin and is formed in a long rectangular shape. Wiring (not shown) is formed at appropriate positions on the surface of the power supply substrate 5.
- the power supply substrate 5 is attached to the substrate 2 by a plurality of metal leads 51.
- one end of the plurality of leads 51 is fixed to both ends in the longitudinal direction of the power supply substrate 5 by soldering, and the other end is a pad (not shown) provided on the upper surface 2 a of the substrate 2. Soldered.
- the power supply substrate 5 is disposed away from the substrate 2 or the heat dissipation member 4.
- the wiring of the substrate 2 and the wiring of the power supply substrate 5 are electrically connected via leads 51.
- the plurality of power supply components 6 function as a power supply circuit for lighting the LED module 1 and an auxiliary LED module 71 described later, and are mounted on both surfaces (upper surface 5a and lower surface 5b) of the power supply substrate 5.
- the plurality of power supply components 6 includes an AC / DC converter 61 and other functional components 52 such as a capacitor and a resistor, and converts the alternating current supplied from the commercial power source into a direct current constant LED 1 and a later-described
- the auxiliary LED module 71 is configured to be supplied.
- the AC / DC converter 61 occupies a larger space than other components mounted on the power supply board 5.
- the plurality of power supply components 6 and the power supply substrate 5 on which these power supply components 6 are mounted are arranged in the power supply regions 12 located at both ends in the longitudinal direction of the substrate 2.
- the translucent cover 8 is for housing the substrate 2, the heat radiating member 4, and the power supply substrate 5, and as shown well in FIG. 31, has a straight tubular shape with a circular cross section.
- a pair of projecting pieces 81 projecting inward are integrally formed on the inner surface of the translucent cover 8.
- Each of the protruding pieces 81 is biased downward (in the radial direction) from the central axis O1 of the translucent cover 8 and protrudes in a plane parallel to the central axis O1, and in a direction along the central axis O1. It extends.
- the translucent cover 8 having such a configuration is made of a synthetic resin such as polycarbonate, and is integrally formed by extrusion molding.
- or the thermal radiation member 4 are prescribed
- the movement of the substrate 2 in the direction perpendicular to the central axis O ⁇ b> 1 (upward in the figure) with respect to the translucent cover 8 is restricted by the upper surface 2 a contacting the protruding piece 81.
- the lower part of the heat radiating member 4 is in contact with the lower inner surface of the translucent cover 8.
- the substrate 2 is in a position offset from the central axis O1 of the translucent cover 8 to the side opposite to the upper surface 2a, and the power supply substrate 5 is positioned in the vicinity of the central axis O1 of the translucent cover 8.
- the width dimension of the power supply substrate 5 can be made larger than the width dimension of the substrate 2.
- the substrate 2, the heat radiating member 4, and the power supply substrate 5 are accommodated in the translucent cover 8 by inserting the substrate 2 and the heat radiating member 4 into the translucent cover 8 below the protruding pieces 81 while sliding. .
- the auxiliary light source means 7 is for irradiating light from the range corresponding to the power source region 12 in the translucent cover 8, and includes a plurality of auxiliary LED modules 71 and a light guide member 72.
- the “range corresponding to the power source region 12 in the translucent cover 8” is a portion of the translucent cover 8 that is located above the substrate 2, and the power source region 12 in the longitudinal direction of the translucent cover 8. It means the range that almost overlaps.
- a plurality of auxiliary LED modules 71 are mounted on the upper surface 2 a of the substrate 2. Specifically, these auxiliary LED modules 71 are disposed in the power supply region 12 of the substrate 2 and are arranged at predetermined intervals along the longitudinal direction of the substrate 2 near both ends in the width direction of the substrate 2. .
- the auxiliary LED module 71 is smaller in size and power consumption than the LED module 1, and plays an auxiliary role as a light source of the LED lamp A14.
- the auxiliary LED module 71 like the LED module 1, for example, a module that includes a white LED and is configured in a surface mount package type is suitably used.
- the light guide member 72 is for efficiently guiding the light from the auxiliary LED module 71 to the translucent cover 8, and is made of a highly transparent member made of an acrylic resin such as PMMA (polymethyl methacrylate), for example. ing.
- the light guide member 72 is generally cylindrical, and is disposed at a position corresponding to the power supply region 12 inside the translucent cover 8.
- the light guide member 72 is formed, for example, by injection molding using a mold, and has a light introducing portion 721 and a light emitting portion 722 as shown in FIGS. 30 and 31.
- the peripheral surfaces of the light introducing portion 721 and the light emitting portion 722 are smooth mirror surfaces.
- the light introducing portion 721 is a portion that introduces light from the auxiliary LED module 71 into the light guide member 72, and an end surface at a position facing the auxiliary LED module 71 is a light incident surface 721a.
- the light introduction part 721 has an appropriately bent shape, and is provided so as to be connected to both ends of the light emission part 722 in the circumferential direction.
- the peripheral surface other than the light incident surface 721a of the light introducing portion 721 is, for example, white-painted, and the inconvenience that light that has entered the light introducing portion 721 leaks to the outside is prevented.
- the light emitting part 722 has a uniform partial cylindrical shape in the longitudinal direction along the central axis O1 of the translucent cover 8, and has a light reflecting surface 722a formed on the inner part and a light emitting part formed on the outer part.
- the light reflecting surface 722a is a surface for reflecting the light traveling through the light introducing portion 721 toward the light emitting surface 722b facing the light reflecting surface 722a. For example, white coating is applied.
- the light emitting surface 722 b is a surface for emitting the light reflected by the light reflecting surface 722 a toward the translucent cover 8, and is positioned so as to be in close contact with the inner surface of the translucent cover 8.
- the light reflecting surface 722a may be formed by forming a fine rough surface instead of the one formed by applying white paint.
- the fine rough surface is formed by, for example, forming a part of a mold for forming the light guide member 72 by embossing or performing a blasting process on a predetermined part after forming.
- the dimensions of the light guide member 72 having the above-described configuration are defined so that the light guide member 72 can be accommodated above the projecting piece 81 of the translucent cover 8 in FIG.
- the light guide member 72 has a direction perpendicular to the central axis O ⁇ b> 1 with respect to the light-transmitting cover 8 (downward direction in the figure) or the light introduction part 721 abuts on the protruding piece 81.
- the movement of the translucent cover 8 in the circumferential direction is restricted.
- the light guide member 72 is accommodated in the translucent cover 8 by inserting the light guide member 72 into the translucent cover 8 while sliding the light guide member 72 above the protruding piece 81.
- the pair of bases 82 is for supplying electric power from a commercial AC power source by being attached to a socket of a fluorescent lamp luminaire.
- the base 82 includes a bottomed cylindrical cover body 83, a resin block 84 accommodated and held in a hollow portion of the cover body 83, and two terminals 85.
- a recess 82 a is formed in the resin block 84, and the base 82 is attached to the heat dissipation member 4 by inserting the longitudinal end of the heat dissipation member 4 into the recess 82 a.
- the heat radiating member 4 is in the state supported by the pair of bases 82.
- a partially cylindrical gap is provided between the cover body 83 and the resin block 84, and both end portions in the longitudinal direction of the translucent cover 8 are inserted into the gap when the base 82 is attached to the heat dissipation member 4.
- the terminal 85 is provided so as to penetrate the cover body 83 and the resin block 84.
- One end portion (outer end portion) of the terminal 85 is a portion that fits into the insertion port of the socket of the fluorescent lamp lighting fixture, and the other end portion of the terminal 85 is electrically connected to the wiring of the substrate 2. Continuity is achieved.
- the LED module 1 and the auxiliary LED module 71 emit light by supplying power after fitting the terminal 85 of the base 82 into the socket of the fluorescent lamp lighting fixture. Can be made.
- the LED lamp A14 of the present embodiment includes the auxiliary light source means 7 for irradiating light from the range corresponding to the power source region 12 in the translucent cover 8. For this reason, when the LED lamp A ⁇ b> 14 is used, light is irradiated not only from the range corresponding to the light source region 21 in the translucent cover 8 but also from the range corresponding to the power source region 12 in the translucent cover 8. Therefore, in the LED lamp A14, it is possible to prevent deterioration in illumination quality due to the presence of the power supply region 12.
- the auxiliary light source means 7 includes a plurality of auxiliary LED modules 71 and a light guide member 72. And since the some auxiliary
- the light emitting portion 722 of the light guide member 72 is provided with a light reflecting surface 722a that reflects light from the auxiliary LED module 71 introduced through the light introducing portion 721 toward the light emitting surface 722b. For this reason, the light traveling inside the light guide member 72 is reflected by the light reflecting surface 722a and travels toward the light emitting surface 722b more efficiently.
- the light reflection surface 722a has a light scattering reflection function, the amount of light emitted from the light emission surface 722b can be uniform. This is more suitable for preventing the deterioration of the illumination quality of the LED lamp A14.
- the power supply components 6 are mounted on both surfaces (upper surface 5a and lower surface 5b) of the power supply substrate 5, for example, compared to a case where the power supply components 6 are mounted only on the upper surface 5a of the power supply substrate 5.
- the mounting efficiency of the power supply component 6 is increased, and the area occupied by the power supply substrate 5 can be reduced. Therefore, the size of the power supply substrate 5 in the longitudinal direction along the central axis O ⁇ b> 1 of the translucent cover 8 can be reduced.
- the power source region 12 in the substrate 2 can be narrowed, and the area of the light source region 21 can be substantially ensured. According to the LED lamp A14 having such a configuration, it is possible to improve the illumination quality.
- the power supply substrate 5 is located closer to the central axis O1 of the translucent cover 8 than the substrate 2 is. Therefore, the width dimension of the power supply substrate 5 that is perpendicular to the central axis O ⁇ b> 1 of the translucent cover 8 can be secured larger than the width dimension of the substrate 2. Therefore, in the case where a certain occupied area is secured for the power supply substrate 5, the longitudinal dimension along the central axis O1 of the translucent cover 8 can be reduced, and the power supply region 12 can be further narrowed. This is more suitable for improving the illumination quality of the LED lamp A14.
- the substrate 2 is laminated on the heat dissipation member 4. For this reason, the heat generated when the LED module 1 and the auxiliary LED module 71 are turned on can be effectively released to the outside through the heat dissipation member 4, and the deterioration of the LED module 1 and the auxiliary LED module 71 can be prevented. it can. Moreover, since the heat radiating member 4 is extended along substantially the whole longitudinal direction of the translucent cover 8, it can function as a structural material of LED lamp A14. Therefore, according to the structure provided with such a heat radiating member 4, moderate rigidity can be ensured in the LED lamp A14.
- a pair of protruding pieces 81 are provided inside the translucent cover 8.
- the substrate 2 is restricted from moving in a direction perpendicular to the central axis O1 of the light-transmitting cover 8 (radial direction of the light-transmitting cover 8). Is done.
- the pair of protruding pieces 81 come into contact with the light introducing portion 721 of the light guide member 72, the light guide member 72 is in a direction perpendicular to the central axis O ⁇ b> 1 of the light transmissive cover 8 (radial direction of the light transmissive cover 8).
- the movement of the translucent cover 8 in the circumferential direction is restricted.
- LED lamp A15 of this embodiment the structure of the auxiliary light source means 7 is different from LED lamp A14 of the said embodiment.
- the LED lamp A15 does not include the auxiliary LED module 71, and is configured to guide light from the LED module 1 to a range corresponding to the power source region 12 in the light-transmitting cover 8 through the light guide member 72. Yes.
- the light guide member 72 of the present embodiment is variously modified compared to the above embodiment.
- the light introduction part 721 of the light guide member 72 is for introducing light from the LED module 1 located at both ends in the longitudinal direction of the substrate 2 into the light guide member 72 and faces the LED module 1.
- the end surface is a light incident surface 721a.
- the light introducing portion 721 is appropriately curved and is provided so as to be connected to one end portion in the longitudinal direction of the light emitting portion 722.
- the light guide member 72 has a direction perpendicular to the central axis O1 with respect to the translucent cover 8 when the end surface in the circumferential direction of the light emitting portion 722 is in contact with the protruding piece 81 (in the drawing). (Downward) or the circumferential movement of the translucent cover 8 is restricted.
- the light from the existing LED module 1 can be uniformly irradiated from the range corresponding to the power supply region 12 in the light-transmitting cover 8 to the outside through the light guide member 72. it can. This is suitable for preventing deterioration of the illumination quality of the LED lamp A15. Further, since it is not necessary to provide an additional LED in the LED lamp A15, it is possible to expect simplification of a power supply circuit configured using a plurality of power supply components 6.
- FIG. 34 shows an LED lamp according to a sixteenth embodiment of the present invention.
- the structure of the auxiliary light source means 7 is different from LED lamp A14 of the said embodiment.
- assistant LED module 71 differs from the said embodiment, and the light guide member 72 is not provided.
- the plurality of auxiliary LED modules 71 are mounted on the upper surface of the power supply board 5 and are arranged at predetermined intervals along the longitudinal direction of the power supply board 5 near both ends in the width direction of the power supply board 5. It is out.
- the light from the auxiliary LED module 71 mounted on the power supply substrate 5 can be irradiated from the range corresponding to the power supply region 12 in the translucent cover 8 to the outside.
- the power supply board 5 is biased relative to the board 2 in a direction (upward in the drawing) in which light from the auxiliary LED module is mainly emitted to the outside of the light-transmitting cover 8. For this reason, the light emitted from the auxiliary LED module 71 efficiently reaches the range corresponding to the power source region 12 in the translucent cover 8.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Power Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
Abstract
Description
いる。
樹脂とを有するLEDモジュールを備え、上記リードの裏面は、上記金属配線層と接合されている。
Claims (7)
- 複数のLED光源と、
上記複数のLED光源が列状に搭載された基板と、
を備えており、
上記基板上には、上記複数のLED光源を覆う導光体が設けられており、
上記導光体は、上記複数のLED光源のそれぞれに密接していることを特徴とする、LEDランプ。 - 上記導光体は、断面半円状である、請求項1に記載のLEDランプ。
- 上記導光体の外表面全体に密着する透光カバーをさらに備える、請求項1に記載のLEDランプ。
- 上記基板のうち上記複数のLED光源が搭載された搭載面とは反対側の面に接合された放熱部材をさらに備える、請求項1に記載のLEDランプ。
- 上記導光体には、上記LED光源からの光によって励起されることにより上記LED光源からの光とは異なる波長の光を発する蛍光材料が含まれている、請求項1に記載のLEDランプ。
- 上記LED光源は、LEDベアチップと、このLEDベアチップを封止する樹脂パッケージと、を備えるLEDモジュールからなる、請求項1に記載のLEDランプ。
- 上記LED光源は、上記基板に実装されたLEDベアチップからなる、請求項1に記載のLEDランプ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200980146101.7A CN102216671B (zh) | 2008-11-19 | 2009-11-19 | Led灯 |
US13/129,746 US8591057B2 (en) | 2008-11-19 | 2009-11-19 | LED lamp |
US14/055,460 US9052099B2 (en) | 2008-11-19 | 2013-10-16 | LED lamp |
US14/714,847 US9777891B2 (en) | 2008-11-19 | 2015-05-18 | LED lamp |
Applications Claiming Priority (16)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-295113 | 2008-11-19 | ||
JP2008295113A JP2010123359A (ja) | 2008-11-19 | 2008-11-19 | Ledランプ |
JP2008-295114 | 2008-11-19 | ||
JP2008295114 | 2008-11-19 | ||
JP2008-295112 | 2008-11-19 | ||
JP2008295112A JP5301248B2 (ja) | 2008-11-19 | 2008-11-19 | Ledランプ |
JP2008-299255 | 2008-11-25 | ||
JP2008299254 | 2008-11-25 | ||
JP2008299255A JP5286048B2 (ja) | 2008-11-25 | 2008-11-25 | Ledランプ |
JP2008-299254 | 2008-11-25 | ||
JP2008-306196 | 2008-12-01 | ||
JP2008-306194 | 2008-12-01 | ||
JP2008306196A JP2010129953A (ja) | 2008-12-01 | 2008-12-01 | Ledランプおよびその製造方法 |
JP2008306194A JP2010129508A (ja) | 2008-12-01 | 2008-12-01 | Ledランプ |
JP2008-318079 | 2008-12-15 | ||
JP2008318079A JP5281382B2 (ja) | 2008-12-15 | 2008-12-15 | Ledランプ |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/129,746 A-371-Of-International US8591057B2 (en) | 2008-11-19 | 2009-11-19 | LED lamp |
US14/055,460 Continuation US9052099B2 (en) | 2008-11-19 | 2013-10-16 | LED lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010058808A1 true WO2010058808A1 (ja) | 2010-05-27 |
Family
ID=42198247
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/069602 WO2010058808A1 (ja) | 2008-11-19 | 2009-11-19 | Ledランプ |
Country Status (3)
Country | Link |
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US (3) | US8591057B2 (ja) |
CN (2) | CN102216671B (ja) |
WO (1) | WO2010058808A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
US20140043801A1 (en) | 2014-02-13 |
US20110228517A1 (en) | 2011-09-22 |
US8591057B2 (en) | 2013-11-26 |
US9777891B2 (en) | 2017-10-03 |
US20150247607A1 (en) | 2015-09-03 |
US9052099B2 (en) | 2015-06-09 |
CN105135238A (zh) | 2015-12-09 |
CN102216671B (zh) | 2015-09-02 |
CN102216671A (zh) | 2011-10-12 |
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