WO2014049952A1 - Light source for lighting, and lighting apparatus - Google Patents

Light source for lighting, and lighting apparatus Download PDF

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Publication number
WO2014049952A1
WO2014049952A1 PCT/JP2013/005023 JP2013005023W WO2014049952A1 WO 2014049952 A1 WO2014049952 A1 WO 2014049952A1 JP 2013005023 W JP2013005023 W JP 2013005023W WO 2014049952 A1 WO2014049952 A1 WO 2014049952A1
Authority
WO
WIPO (PCT)
Prior art keywords
base
translucent cover
circuit
led
straight tube
Prior art date
Application number
PCT/JP2013/005023
Other languages
French (fr)
Japanese (ja)
Inventor
康一 中村
雅人 松本
高橋　健治
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to JP2013552658A priority Critical patent/JP6179772B2/en
Priority to CN201390000078.2U priority patent/CN203686680U/en
Publication of WO2014049952A1 publication Critical patent/WO2014049952A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • 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
    • 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
    • F21K9/275—Details of bases or housings, i.e. the parts between the light-generating element and the end caps; Arrangement of components within bases or housings
    • 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
    • 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
    • F21K9/68—Details of reflectors forming part of the light source
    • 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
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/007—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing
    • F21V23/009—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing the casing being inside the housing of the lighting 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
    • 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
    • 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
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/004—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board
    • F21V23/006—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board the substrate being distinct from the light source holder
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • 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
    • 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]

Definitions

  • the present invention relates to an illumination light source and an illumination device, for example, a straight tube lamp having a light emitting element such as a light emitting diode (LED) and an illumination device including the same.
  • a light emitting element such as a light emitting diode (LED)
  • LED light emitting diode
  • LED is expected to be a new light source in various lamps such as fluorescent lamps and incandescent lamps, which are conventionally known because of its high efficiency and long life, and research and development of lamps using LED (LED lamps) is being promoted. ing.
  • a straight tube type LED lamp (straight tube type LED lamp) that replaces a straight tube type fluorescent lamp having electrode coils at both ends, or a light bulb type LED that replaces a light bulb type fluorescent lamp or an incandescent bulb.
  • lamps bulb-shaped LED lamps
  • Patent Document 1 discloses a conventional straight tube LED lamp.
  • a long casing has a structure divided into two along its longitudinal direction, and a long semicircular section with an outer surface exposed to the outside of the lamp.
  • An LED module having a plurality of LEDs mounted thereon is placed on the base.
  • a translucent cover having a long semi-circular cross section is fixed to the base so as to cover the LED module.
  • heat is generated from the LED itself due to the self-emission of the LED and the temperature rises, whereby the light output of the LED is lowered and the lifetime is shortened.
  • efficient heat dissipation from the back of the base is realized by using the base of the straight tube LED lamp as a heat sink.
  • lighting devices including straight tube LED lamps require a lighting circuit such as a converter circuit and a rectifier circuit for converting electric power received from an external commercial power source into predetermined DC power.
  • the lighting circuit is generally arranged on the side of the luminaire.
  • the lighting circuit is included in the straight tube LED lamp.
  • the form to incorporate is mentioned.
  • the lighting circuit when the lighting circuit is incorporated in a straight tube type LED lamp, the lighting circuit needs to be arranged so as not to block the LED emission, so that the lighting circuit is provided in the base as an example.
  • a structure to be inserted into the formed cavity is mentioned.
  • the cavity provided in the base is an air layer, a heat transfer path for heat generated in the LED cannot be secured due to the presence of the air layer, and efficient heat dissipation becomes difficult.
  • the base without the cavity has high heat dissipation, but there is no space for housing the lighting circuit.
  • pipe type LED lamp can be considered.
  • the length of the LED module is reduced, and the straight tube type The brightness at the end of the LED lamp is lowered.
  • the present invention has been made to solve the above-described problems, and an object thereof is to provide an illumination light source and an illumination device that ensure excellent heat dissipation and the brightness of the end of the straight tube lamp does not decrease. .
  • an illumination light source includes a light emitting module having a light emitting element, a substrate on which the light emitting element is provided, and a long shape covering the surface of the substrate.
  • a reflection surface inclined from the surface of the base for emitting light toward the outside of the cover is provided.
  • a distance in a direction perpendicular to the surface of the base between the reflection surface and the inner surface of the translucent cover is at a longitudinal center of the translucent cover. It may be bigger as it gets closer.
  • the reflective surface of the case may be a curved surface having a convex shape.
  • the member housed in the case may be a circuit member that converts electric power supplied from an external power source into predetermined DC power.
  • the case may be made of an insulating material.
  • the case may be disposed at both ends in the longitudinal direction of the translucent cover.
  • the translucent cover is a cut-out cylindrical member having a main opening in which a part of the long cylinder is cut out along the length direction.
  • the base may hold the translucent cover so as to close the main opening.
  • an aspect of the illumination device according to the present invention is characterized by including the illumination light source described above.
  • the reflective surface of the case that houses the lighting member provided at the end of the straight tube LED lamp allows the light emitted from the light emitting module to the end of the straight tube LED lamp to be transmitted through the translucent cover. Since it radiates
  • FIG. 1 is a perspective view showing a configuration of a straight tube LED lamp according to Embodiment 1 of the present invention.
  • FIG. 2 is an exploded perspective view of the straight tube LED lamp according to Embodiment 1 of the present invention.
  • FIG. 3 is a five-side view of the circuit case according to the first embodiment.
  • FIG. 4A is a diagram for explaining an inclination effect of the reflection surface of the circuit case according to the first embodiment.
  • FIG. 4B is a diagram for explaining the curved surface effect of the reflection surface of the circuit case according to the first embodiment.
  • FIG. 5 is a perspective view showing a configuration of a straight tube LED lamp according to a modification of the first embodiment of the present invention in which lighting circuits are divided and arranged.
  • FIG. 6A is a schematic top view of an end portion of a straight tube LED lamp including a circuit case according to Embodiment 1.
  • FIG. 6B is a schematic top view of an end portion of a straight tube LED lamp including a circuit case according to a modification of Embodiment 1.
  • FIG. 7 is a schematic perspective view of a lighting apparatus according to Embodiment 2 of the present invention.
  • FIG. 8A is a base rear view showing a first modification of the heat dissipation structure of the straight tube LED lamp according to the present invention.
  • FIG. 8B is a base rear view showing a second modification of the heat dissipation structure of the straight tube LED lamp according to the present invention.
  • a straight tube LED lamp which is an embodiment of the illumination light source of the present invention and a lighting device using the straight tube LED lamp will be exemplified.
  • the straight tube LED lamp 1 according to Embodiment 1 of the present invention is a straight tube LED lamp that replaces a conventional straight tube fluorescent lamp. Further, the straight tube LED lamp 1 according to the present embodiment has a split structure in which a straight tubular casing is separated into a translucent member and a heat sink.
  • FIG. 1 is a perspective view showing a configuration of a straight tube LED lamp according to Embodiment 1 of the present invention.
  • 2 is an exploded perspective view of the straight tube LED lamp according to the first embodiment of the present invention
  • FIG. 3 is a front view and a side view of the circuit case according to the first embodiment of the present invention.
  • . 1 is a perspective view for clearly showing the structure of the straight tube LED lamp 1, the LED module 10 and the circuit case 60 may not be visible from the outside of the translucent cover 20.
  • the straight tube LED lamp 1 is a long straight tube lamp used as an alternative to a conventional straight tube fluorescent lamp (straight tube fluorescent lamp).
  • the translucent cover 20, the base 30, the LED module 10, the caps 40 and 50, the circuit case 60, and the lighting circuit 70 are provided.
  • the base 30, the caps 40 and 50, the circuit case 60, and the translucent cover 20 constitute a long and cylindrical lamp housing (envelope). That is, by connecting the translucent cover 20 and the base 30, a tubular casing having openings at both ends is configured as an outer member (insertion tube).
  • a circuit case 60 and a lighting circuit 70 are provided at the end in the longitudinal direction (Y-axis direction) of the casing, and a pair of caps 40 and 50 are provided at both ends.
  • the straight tube LED lamp 1 is supported by the lighting fixture by attaching the caps 40 and 50 to the socket of the lighting fixture.
  • the structure of the circuit case 60 that is the main part of the present invention will be described later.
  • the translucent cover 20 is a long cover member constituting the outer surface of the lamp housing, and protects members provided on the base 30, that is, the LED module 10 and the lighting circuit.
  • the translucent cover 20 includes a cutout cylindrical member having a main opening 21 formed by cutting out a part of a long cylinder along the long direction (tube axis direction), for example, a substantially semi-cylindrical member. Is done.
  • the translucent cover 20 is made of a material that transmits light emitted from the LED module 10 to the outside of the lamp.
  • the translucent cover 20 is made of, for example, a transparent resin material or glass made of acrylic or the like, and can be formed by resin molding a desired transparent resin material.
  • a straight pipe made of soda-lime glass having silica (SiO 2 ) of 70 to 72 [%]
  • a straight pipe made of a resin material such as polycarbonate (plastic) Tube
  • the translucent cover 20 may include a light diffusing unit having a light diffusing function for diffusing light from the LED module 10. Thereby, the light emitted from the LED module 10 can be diffused when passing through the translucent cover 20.
  • the light diffusion portion include a light diffusion sheet or a light diffusion film formed on at least one of the inner surface and the outer surface of the translucent cover 20.
  • a milky white light diffusing film formed by attaching a resin or white pigment containing a light diffusing material (fine particles) such as silica or calcium carbonate to at least one of the inner surface and the outer surface of the translucent cover 20. There is.
  • a lens structure provided at least either inside or outside of the translucent cover 20, or a concave or convex portion formed on at least one of the inner surface and the outer surface of the translucent cover 20.
  • a light diffusion function (light (A diffusion part) can be provided.
  • the light-transmitting cover 20 itself can be molded using a resin material or the like in which a light diffusing material is dispersed, so that the light-transmitting cover 20 can have a light diffusing function (light diffusing portion).
  • the base 30 is a support base for holding (supporting) the LED module 10, and is translucent so as to close the main opening 21 of the translucent cover 20. It is integrated with the cover 20.
  • An inner part of the base 30 on the side of the translucent cover 20 is a plate-like placement portion 31 on which the LED module 10 is placed.
  • the mounting surface of the mounting part 31 which is the surface of the base 30 is an elongate rectangular plane.
  • the base 30 functions as a heat sink that dissipates heat generated in the LED module 10. Accordingly, the back surface of the base 30 is exposed toward the outside of the straight tube LED lamp 1. Specifically, a plurality of radiating fins 32 are provided as heat radiating portions on the outer side which is the back surface of the mounting surface of the base 30. The heat radiation fin 32 is exposed toward the outside of the straight tube LED lamp 1 and is provided so as to protrude outward from the mounting portion 31. A plurality of the radiation fins 32 are arranged in parallel along the longitudinal direction (Y-axis direction) of the base 30.
  • the longitudinal direction of the base 30 refers to a direction parallel to the long side when the surface of the base 30 is viewed in plan
  • the short direction of the base 30 is the width of the base 30. The direction parallel to the short side when the surface is viewed in plan.
  • step portions to which the edges on both sides in the circumferential direction of the translucent cover 20 are engaged.
  • the translucent cover 20 and the base 30 can be engaged by sliding the translucent cover 20 on the base 30 in the longitudinal direction or by fitting the translucent cover 20 from above the base 30.
  • the base 30 is preferably made of a high thermal conductivity material such as metal, and is an extruded material made of aluminum in the present embodiment.
  • the base 30 may be comprised with resin. In this case, it is preferable to use a resin material having a high thermal conductivity.
  • the LED module 10 is a light source of the straight tube LED lamp 1 and is fixed to the mounting portion 31 on the surface of the base 30 so as to be covered by the translucent cover 20.
  • There are various fixing methods to the mounting portion 31 such as claw, slide, silicon, rivet, caulking, etc. in addition to fixing with an adhesive or a screw.
  • the LED module 10 is a surface-mounted (SMD: Surface Mount Device) type light emitting module as shown in FIG. 2, and is a line light source that emits light in a line shape.
  • the LED module 10 includes a mounting substrate 82, a plurality of LED elements 88 mounted in a line on the mounting substrate 82, wiring 84, and electrode terminals 86.
  • the LED module 10 is provided inside a long casing composed of the translucent cover 20 and the base 30, and is mounted with the LED element 88 as a light emitting element and the LED element 88 on the surface.
  • a light emitting module including a substrate 82.
  • the mounting substrate 82 is an LED mounting substrate for mounting the LED element 88, at least the surface of which is made of an insulating material, and is, for example, a long rectangular substrate.
  • a glass epoxy substrate CEM-3, FR-4, etc.
  • a substrate made of paper phenol or paper epoxy FR-1, etc.
  • a flexible flexible substrate made of polyimide, etc.
  • a metal base substrate can be used.
  • an aluminum alloy substrate, an iron alloy substrate, or a copper alloy substrate having an insulating film formed on the surface can be used.
  • the front and back surfaces of the mounting substrate 82 are rectangular when viewed in plan.
  • the mounting substrate 82 has a longitudinal direction (Y-axis direction) parallel to the longitudinal direction of the base 30, and a lateral direction (X-axis direction) orthogonal to the longitudinal direction is parallel to the lateral direction of the base 30. As described above, it is disposed on the surface of the base 30.
  • Each of the plurality of LED elements 88 is an example of a light emitting element, and is directly mounted on the surface of the mounting substrate 82.
  • the plurality of LED elements 88 are arranged in a line (in a straight line) along the longitudinal direction of the mounting substrate 82.
  • the LED element 88 is a so-called SMD type light emitting element in which an LED chip and a phosphor are packaged.
  • the LED element 88 is a white LED element that emits white light.
  • the LED element 88 includes a package, an LED mounted on the bottom surface of the recess of the package, a sealing member that is a phosphor-containing resin that fills the recess of the package and seals the LED, a metal wiring, and the like. .
  • the package is a container molded with a non-translucent resin (white resin or the like), and includes an inverted frustoconical recess (cavity).
  • the inner side surface of the recess is an inclined surface and is configured to reflect light from the LED upward. Note that the package may be light-transmitting, and light may be emitted in a wide range from the side surface of the package.
  • Each LED is an example of a light-emitting element and is a bare chip that emits monochromatic visible light, and is die-bonded to the bottom surface of the recess of the package and mounted on the mounting substrate 82 by a die attach material (die bond material).
  • a blue light emitting LED chip that emits blue light can be used.
  • a gallium nitride based semiconductor light emitting element having a central wavelength of 440 nm to 470 nm made of an InGaN based material can be used.
  • a p-side electrode and an n-side electrode for supplying current are formed on the upper surface of the chip, and each of the p-side electrode and the n-side electrode and the wiring 84 are wire-bonded.
  • the sealing member is a phosphor-containing resin containing a phosphor that is a light wavelength converter, and converts the wavelength of the light from the LED and simultaneously seals all the LEDs on the mounting substrate 82 to protect the LED. To do.
  • the sealing member is filled in the recess of the package, and is sealed up to the opening surface of the recess.
  • a phosphor-containing resin obtained by dispersing YAG (yttrium, aluminum, garnet) -based yellow phosphor particles in a silicon resin can be used as the sealing member.
  • the sealing member may contain a light diffusing material such as silica.
  • the wiring 84 is a metal wiring made of tungsten (W), copper (Cu), or the like.
  • the surface of the wiring 84 is exposed to electrically connect the LED elements 88 to each other and to electrically connect the LED elements 88 and the electrode terminals 86.
  • a pattern is formed in a predetermined shape.
  • the electrode terminal 86 is a power supply / reception unit that receives DC power from the lighting circuit 70 and supplies DC power to the LED.
  • the surface of the electrode terminal 86 is exposed and is electrically connected to the wiring 84.
  • the DC voltage received by the electrode terminal 86 is supplied to the LED, the LED emits light, and desired light is emitted from the LED. Note that the two electrode terminals 86 are biased toward one long side of the mounting substrate 82 with respect to the sealing member.
  • the number of the LED modules 10 mounted on the base 30 may be either one or a plurality.
  • the LED modules 10 are arranged in a line along the longitudinal direction of the base 30.
  • FIG. 2 is an external perspective view of the lighting circuit 70.
  • the lighting circuit 70 is an LED lighting circuit that converts AC power input from an external power source into DC power and outputs the power, and includes a circuit board 71 and a predetermined circuit element group 72 mounted on the circuit board 71. . That is, the lighting circuit 70 is a circuit member that is accommodated in the circuit case 60 and converts electric power supplied from an external power source into predetermined DC power.
  • the circuit board 71 is a printed board on which a predetermined wiring pattern for wiring the mounted electronic components is formed, for example, a glass epoxy board, a ceramic board, a flexible flexible board (FPC), or A metal substrate having excellent heat dissipation can be used.
  • the circuit element group 72 includes a plurality of circuit elements for lighting the LED elements 88 of the LED module 10.
  • the circuit element group 72 includes a rectifier circuit element and a fuse element.
  • the rectifier circuit element is a diode bridge circuit composed of four diodes, and full-wave rectifies the input AC power.
  • the circuit elements constituting the circuit element group 72 are electrically connected by a wiring pattern formed on the circuit board 71.
  • a circuit element of the circuit element group 72 a resistor, a capacitor, a coil, a diode, a transistor, or the like is used as necessary.
  • the lighting circuit 70 includes an input socket that receives AC power from a pair of power supply pins 41 provided on the power receiving base 40 and an output socket that outputs DC power for lighting the LED element 88 of the LED module 10. With. An input connector terminal electrically connected to the pair of power supply pins 41 is inserted into the input socket via a lead wire. In addition, an output connector terminal electrically connected to the electrode terminal 86 on the mounting substrate 82 is inserted into the output socket via a lead wire. The input socket and the output socket are electrically connected to the circuit elements of the circuit element group 72 by a wiring pattern formed on the circuit board 71.
  • the lighting circuit 70 is provided with a connector for passing power supplied to the LED module 10 and a circuit for causing the LED module 10 to emit light.
  • the straight tube LED lamp 1 in the present embodiment employs a one-side power feeding method in which power is fed to the LED module 10 only from the base 40. That is, the straight tube LED lamp 1 receives power from a lighting fixture or the like only from the base 40.
  • a predetermined DC voltage is applied to the LED element 88 of the LED module 10 via the electrode terminal 86.
  • the lighting circuit 70 does not necessarily have a converter function for converting AC power as described above into DC power. It may be a circuit having a function of rectifying electric power that has already been subjected to AC-DC conversion in a lighting fixture to which the straight tube LED lamp 1 is attached.
  • the circuit element group 72 includes, for example, a diode bridge circuit (rectifier circuit) that rectifies input DC power, a fuse element, and the like.
  • the circuit element group 72 having a function of rectifying may include a resistor, a capacitor, a coil, a diode, a transistor, or the like as necessary.
  • the circuit case 60 in which the lighting circuit 70 is accommodated is disposed at the end of the base 30 in the longitudinal direction. At least a part of the circuit case 60 is covered with the translucent cover 20 together with the LED module 10.
  • the circuit case 60 is disposed between the base 40 and the base 30 in the longitudinal direction of the long casing, and is fixed to the base 40 and the base 30 by a pair of screws 43. That is, the circuit case 60 is disposed at an end portion in the longitudinal direction (Y-axis direction) of the translucent cover 20 and houses the lighting circuit 70 for lighting the LED module 10 covered with the translucent cover 20. This is the case.
  • the circuit case 60 has a reflective surface inclined from the surface of the mounting portion 31 of the base 30 for emitting the light emitted from the LED module 10 toward the outside of the translucent cover 20. Yes.
  • the circuit case 60 that does not emit light is disposed at the end of the straight tube LED lamp 1, the light emitted from the LED module 10 is emitted toward the outside of the translucent cover 20.
  • the brightness at the end of the straight tube LED lamp 1 is not lowered.
  • the heat radiation efficiency from the back of the base can be improved by comparing the lighting circuit with a straight tube LED lamp in which the lighting circuit is provided in a cavity secured inside the base.
  • the circuit case 60 is comprised with the material which has a high reflectance with respect to the light radiate
  • FIG. since the circuit case 60 accommodates the circuit element group 72 and the wiring pattern, the circuit case 60 is preferably made of an insulating material.
  • An example of a material having high light reflectivity while ensuring insulation is polycarbonate. Thereby, the brightness
  • FIG. 3 is a five-side view of the circuit case according to the first embodiment.
  • the reflection surface of the circuit case 60 is inclined from the longitudinal direction of the base 30, and the base between the reflection surface of the circuit case 60 and the inner surface of the translucent cover 20.
  • the distance in the direction perpendicular to the surface 30 (Z-axis direction) is larger as it approaches the center in the longitudinal direction of the elongated casing (in the positive Y-axis direction).
  • FIG. 4A is a diagram for explaining an inclination effect of the reflection surface of the circuit case according to the first embodiment.
  • the light emitted from the LED element 88 in the longitudinal direction of the long casing is efficiently converted out of the light emitted from the LED element 88 by the inclined structure of the reflection surface of the circuit case 60.
  • the light can be emitted toward the outside of the translucent cover 20.
  • the reflection surface of the circuit case 60 is preferably a curved surface having a convex shape.
  • FIG. 4B is a diagram for explaining the curved surface effect of the reflecting surface of the circuit case according to the first embodiment.
  • the curved surface structure of the reflection surface of the circuit case 60 allows the light emitted from the LED element 88 to be emitted in a wide range toward the outside of the translucent cover 20. .
  • the reflective surface of the circuit case 60 may be a plane inclined from the surface of the mounting portion 31 of the base 30. In this case, the isotropic curved surface effect as shown in FIG. 4B cannot be obtained, but the effect shown in FIG. 4A is achieved.
  • the length in the longitudinal direction of the long casing of the circuit case 60 having the above characteristics is preferably as short as possible.
  • the outer diameter of the translucent cover 20 is 28 mm ⁇
  • the outer diameter of the base 40 is 30 mm ⁇
  • the length of the long casing of the base 40 is 26 mm in the longitudinal direction.
  • the length of the long casing of the circuit case 60 including the base 40 in the longitudinal direction is preferably within 70 mm.
  • the circuit case may be disposed not only at one end in the longitudinal direction of the base 30 but also at both ends.
  • the single-side power supply method is described. However, when the wattage is advanced, it is assumed that the single-side power supply method is difficult to apply. To cope with higher wattage, as the lighting circuit becomes larger, a low-wattage circuit is arranged on the left and right with a double-sided power supply system, or the lighting circuit is divided into two on the left and right, and the divided lighting circuit Are preferably connected by base internal wiring.
  • FIG. 5 is a perspective view showing a configuration of a straight tube LED lamp in which lighting circuits are divided and arranged according to a modification of the first embodiment of the present invention.
  • the straight tube LED lamp 3 includes a translucent cover 20, a base 30, an LED module 10, a pair of caps 40, and a pair of circuit cases 62.
  • a circuit case 62 and a lighting circuit are provided at both ends in the longitudinal direction (Y-axis direction) of the casing formed by the translucent cover 20 and the base 30. Further, a pair of caps 40 are provided outside the circuit case 62 so as to cover the circuit case 62.
  • the lighting circuit for low watts distributed to the left and right circuit cases 62 in accordance with the increase in the size of the lighting circuit.
  • the power supply method is adopted.
  • the lighting circuit for low watts may be distributed and arranged in the left and right circuit cases 62, and the divided lighting circuits may be connected by wiring passing through the inside of the base 30.
  • the LED element 88 can be disposed near the base 40 that is the end of the straight-tube LED lamp 3. It is possible to effectively prevent a decrease in luminance at the end of the LED lamp 3.
  • the lighting circuit 70 is divided and accommodated in two circuit cases 62, and the two circuit cases 62 are distributed and arranged at both ends of the straight tube LED lamp 3. This makes it possible to make the luminance distribution at both ends of the straight tube LED lamp 3 symmetrical.
  • the base 40 is a power supply base for supplying power to the LED elements of the LED module 10.
  • the base 40 is also a power receiving base that receives power for lighting the LED elements of the LED module 10 from an external power source of the straight tube LED lamp 1.
  • the base 40 is in contact with the circuit case 60, and covers one of the end portions in the longitudinal direction of the long casing composed of the translucent cover 20 and the base 30. It has a bottomed cylindrical shape.
  • the base 40 in the present embodiment includes a base body made of a synthetic resin such as polybutylene terephthalate (PBT) and a pair of power receiving pins 41 that are a pair of power receiving connection terminals made of a metal material such as brass.
  • the pair of power supply pins 41 are configured to protrude outward from the bottom of the base body.
  • the power supply pin 41 is a pin that supplies power to turn on the LED element, and functions as a power reception pin that receives predetermined power from an external device such as a lighting fixture.
  • the pair of power supply pins 41 is in a state of receiving power from the power supply device built in the lighting fixture.
  • the power supply pin 41 also functions as a connection terminal for detachably attaching to the socket of the lighting fixture.
  • the base 40, the circuit case 60, and the base 30 are fixed by a pair of screws 43 and screw holes 42 in the longitudinal direction of the long casing.
  • the base 50 is a non-power supply base. That is, the base 50 has a function of attaching the straight tube LED lamp 1 to a lighting fixture.
  • the base 50 has a bottomed cylindrical shape that covers the other end in the longitudinal direction of the long casing composed of the translucent cover 20 and the base 30. It has become.
  • the base 50 in the present embodiment includes a base body made of a synthetic resin such as PBT and a pair of non-power-feeding pins 51 made of a metal material such as brass. The pair of non-feeding pins 51 are configured to protrude outward from the bottom of the base body.
  • the base 50 may have a ground function.
  • the non-power feeding pin 51 functions as a ground pin
  • the base 30 is grounded via the lighting fixture by grounding the non-power feeding pin 51 and the base 30.
  • the base 50 and the base 30 are fixed by a pair of screws 53 and screw holes 52 in the longitudinal direction of the elongated casing.
  • the straight tube LED lamp 1 employs a one-sided power feeding method, and the power for lighting the LED module 10 is a pair of electrodes provided only at one end of the straight tube LED lamp 1. Power is supplied from the power supply pin 41 via the lighting circuit 70.
  • the shape of the circuit case 60 is not restricted to the shape illustrated in FIG.
  • FIG. 6A is a schematic top view of an end portion of a straight tube LED lamp including a circuit case according to Embodiment 1
  • FIG. 6B is a straight tube LED including a circuit case according to a modification of Embodiment 1. It is the upper surface schematic of the edge part of a lamp
  • the circuit case according to the present embodiment has a reflective surface inclined from the surface of the base 30, and the reflective surface is preferably a curved surface having a convex shape.
  • the circuit case 60 preferably has a shape that protrudes most at the center in the short direction of the base 30.
  • the circuit case 61 according to the modification shown in FIG. 6B has a part of the recess that is retracted to the longitudinal end portion of the base 30 at the central portion in the short direction of the base 30.
  • tip of the circuit case 61 have the same situation as the circuit case 60 illustrated by FIG. 6A.
  • the LED element 88 Due to the shape of the recess at the tip of the circuit case 61, the LED element 88 can be arranged at the end in the longitudinal direction of the long casing. Therefore, the brightness
  • FIG. 7 is a schematic perspective view of the lighting apparatus according to Embodiment 2 of the present invention.
  • the lighting device 2 according to the present embodiment is a base light, and includes a straight tube LED lamp 1 and a lighting fixture 100.
  • the straight tube LED lamp 1 is a straight tube LED lamp 1 according to the first embodiment, and is used as a light source for illumination of the illumination device 2. In the present embodiment, two straight tube LED lamps 1 are used.
  • the lighting fixture 100 includes a pair of sockets 110 that are electrically connected to the straight tube LED lamp 1 and that holds the straight tube LED lamp 1 and a fixture main body 120 to which the socket 110 is attached.
  • the instrument body 120 can be formed by, for example, pressing an aluminum steel plate.
  • the inner surface of the instrument main body 120 is a reflecting surface that reflects light emitted from the straight tube LED lamp 1 in a predetermined direction (for example, downward).
  • the lighting fixture 100 configured in this way is mounted on a ceiling or the like via a fixture.
  • the lighting fixture 100 may incorporate a circuit for controlling the lighting of the straight tube LED lamp 1 or the like.
  • a cover member may be provided so as to cover the straight tube type LED lamp 1.
  • the case disposed between the base 40 and the base 30 is exemplified as the circuit case 60 that accommodates the lighting circuit 70, but the case that accommodates a member different from the circuit element and the wiring. It may be.
  • positioned at the back surface of the base 30 is the radiation fin 32 extended in the longitudinal direction of the elongate housing
  • the heat dissipation structure is not limited to this.
  • the heat dissipation structure of the straight tube LED lamp of the present invention may be the heat dissipation structure shown in FIG. 8A or 8B.
  • FIG. 8A is a rear view of the base showing a first modification of the heat dissipation structure of the straight tube LED lamp according to the present invention
  • FIG. 8B is a second view of the heat dissipation structure of the straight tube LED lamp according to the present invention. It is a base rear view which shows the modification of this.
  • FIG. 8A and FIG. 8B show the layout of the heat dissipating fins constituting the heat dissipating structure on the back surfaces of the base 33 and the base 34, respectively.
  • the heat dissipation structure shown in FIG. 8A is different from the heat dissipation structure including the heat dissipation fins 32 of the base 30 according to Embodiment 1 in that the heatsink fins extending in the longitudinal direction of the base (Y-axis direction) have a predetermined interval.
  • the structure is divided by. According to the above structure, external cold air can be flowed into the radiating fin from the divided portion of the radiating fin, so that effective air convection is performed and more efficient exhaust heat is realized.
  • the heat dissipation structure shown in FIG. 8B is configured by a plurality of heat dissipation fins 32 in which the heat dissipation structure on the back surface of the base 30 according to Embodiment 1 extends in the longitudinal direction (Y-axis direction) of the base.
  • it is composed of a plurality of radiating fins extending in the short direction of the base (X-axis direction).
  • each of the plurality of radiating fins has a structure that is divided at a predetermined interval.
  • the heat dissipation structure shown in FIG. 8B may be a structure in which a plurality of heat dissipation fins extending in the short direction (X-axis direction) of the base are not divided.
  • a single-side power feeding method that feeds power to all the LEDs in the housing from only one side of the base 40 or the base 50 is adopted, but both the bases on both sides use the G13 base and L
  • a double-sided power feeding method such as a shape base (a base having a flat power receiving pin bent in an L shape) may be used.
  • the power receiving pin on one side and the power receiving pin on the other side may be configured as one pin, or the power receiving pin on one side and the power receiving pin on the other side may be configured to receive power from both sides as a pair of power receiving pins. I do not care.
  • the pair of power receiving pins and the ground pins are not limited to the rod-shaped metal, and may be configured by a flat metal or the like.
  • the straight tube LED lamp according to the present invention includes the following variations. That is, a one-sided power feeding method in which one side is composed of an L-shaped base and a base having a ground pin on the other side, a two-sided power feeding method in which both sides are composed of an L-shaped base, a one-sided power feeding method in which both sides are composed of an L-shaped base, and a G13 base And a one-sided power feeding system composed of a G13 base.
  • the LED module 10 is an SMD type LED module using the packaged LED element 88, but is not limited thereto.
  • a COB (Chip On Board) type LED module having a configuration in which a plurality of LED chips are directly mounted on the mounting substrate 82 and the plurality of LED chips are collectively sealed with a phosphor-containing resin may be used.
  • the LED module 10 (LED element 88) is configured to emit white light by the blue LED chip and the yellow phosphor, but is not limited thereto.
  • a phosphor-containing resin containing a red phosphor and a green phosphor may be used and combined with this and a blue LED chip to emit white light.
  • You may comprise so that white light may be emitted by the blue phosphor particles, green phosphor particles, and red phosphor particles that are excited to emit blue light, red light, and green light.
  • the LED is exemplified as the light emitting element.
  • a semiconductor light emitting element such as a semiconductor laser
  • an EL element such as an organic EL (Electro Luminescence) or an inorganic EL, or other solid light emitting element is used. Also good.
  • the present invention also includes a cylindrical translucent cover without a notch (main opening 21) seen in the translucent cover 20 and a base that is arranged in the translucent cover.
  • the present invention can also be applied to a straight tube type LED lamp provided with a long casing. That is, the circuit case in this aspect is disposed between the base and the base that covers the cylindrical translucent cover at the end, and at least a part of the circuit case is a translucent cover together with the LED module. Covered. Even in the case of this structure, a decrease in luminance at the end of the straight tube LED lamp is suppressed.
  • channel of a base is continuous in a longitudinal direction, forms one plane, and translucency The end of the cover is fitted in the groove of the base continuously in the longitudinal direction.
  • the shape of the translucent cover when viewed from the long direction exceeds a semicircle, and the main opening of the translucent cover is 180 around the central axis of the translucent cover when viewed from the long direction.
  • the translucent cover is particularly distorted.
  • the stress which a translucent cover receives from a base can be relieve
  • the end of the translucent cover is intermittently formed in a claw shape in the longitudinal direction, and the unevenness whose height changes in the circumferential direction of the translucent cover is the end of the translucent cover.
  • the convex portion (claw portion) of the end face of the end portion of the translucent cover fits into the groove of the base and contacts the surface of the base groove, but the end face of the end of the translucent cover The recess does not fit into the groove of the base and does not contact the surface of the groove of the base.
  • a configuration in which the width of the groove of the base is constant in the longitudinal direction and the thickness of the end portion of the translucent cover varies in the longitudinal direction is conceivable.
  • the thick part at the end of the translucent cover fits into the groove of the base and contacts the surface of the groove of the base, but the thin part at the end of the translucent cover A gap is formed between the thin part at the end and the groove on the base without fitting (contacting) with the groove.
  • a configuration in which the thickness of the end portion of the translucent cover is constant in the longitudinal direction and the width (opening width) of the groove of the base varies in the longitudinal direction can be considered.
  • the narrow part of the groove of the base is fitted to the end of the translucent cover and comes into contact with the end of the translucent cover, but the wide part of the base is wide.
  • a gap is formed between the wide portion of the groove of the base and the end of the translucent cover without being fitted to the end of the transparent cover.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

A straight tube LED lamp (1) is provided with: an LED module (10) that is provided inside of a long housing; a translucent cover (20), which is a part of the long housing, and which covers the LED module (10); a base (30), which is another part of the long housing, and which has the LED module (10) provided on the surface; a circuit case (60), which is a part of the long housing, and which is a base (30) end portion in the longitudinal direction of the base, said circuit case being disposed by being covered with the translucent cover (20); and a ferrule (40), which is in contact with the circuit case (60), and which is provided in the longitudinal direction of the long housing. The circuit case (60) has a reflecting surface for outputting, toward the outer side of the translucent cover (20), light outputted from the LED module (10), said reflecting surface being tilted from the longitudinal direction of the base (30).

Description

照明用光源及び照明装置Illumination light source and illumination device
　本発明は、照明用光源及び照明装置に関し、例えば、発光ダイオード（ＬＥＤ：Ｌｉｇｈｔ　Ｅｍｉｔｔｉｎｇ　Ｄｉｏｄｅ）等の発光素子を有する直管形ランプ及びこれを備えた照明装置に関する。 The present invention relates to an illumination light source and an illumination device, for example, a straight tube lamp having a light emitting element such as a light emitting diode (LED) and an illumination device including the same.
　ＬＥＤは、高効率及び長寿命であることから、従来から知られる蛍光灯や白熱電球等の各種ランプにおける新しい光源として期待されており、ＬＥＤを用いたランプ（ＬＥＤランプ）の研究開発が進められている。 LED is expected to be a new light source in various lamps such as fluorescent lamps and incandescent lamps, which are conventionally known because of its high efficiency and long life, and research and development of lamps using LED (LED lamps) is being promoted. ing.
　ＬＥＤランプとしては、両端部に電極コイルを有する直管形蛍光灯に代替する直管形のＬＥＤランプ（直管形ＬＥＤランプ）、あるいは、電球形蛍光灯や白熱電球に代替する電球形のＬＥＤランプ（電球形ＬＥＤランプ）等がある。例えば、特許文献１には、従来の直管形ＬＥＤランプが開示されている。 As an LED lamp, a straight tube type LED lamp (straight tube type LED lamp) that replaces a straight tube type fluorescent lamp having electrode coils at both ends, or a light bulb type LED that replaces a light bulb type fluorescent lamp or an incandescent bulb. There are lamps (bulb-shaped LED lamps) and the like. For example, Patent Document 1 discloses a conventional straight tube LED lamp.
特開２００９－４３４４７号公報JP 2009-43447 A
　直管形ＬＥＤランプでは、例えば、長尺状の筐体がその長手方向に沿って２つに分割された構造を有し、外面がランプ外部に露出された断面略半円状の長尺状の基台の上に複数のＬＥＤが実装されてなるＬＥＤモジュールが載置されている。このＬＥＤモジュールを覆うように長尺状の断面略半円弧状の透光性カバーが上記基台に固定されている。ＬＥＤモジュールが実装された上記直管形ＬＥＤランプでは、ＬＥＤの自発光によりＬＥＤ自身から熱が発生して温度上昇することにより、ＬＥＤの光出力が低下するとともに寿命も短くなる。この対策として、直管形ＬＥＤランプの基台をヒートシンクとして用いることにより、基台背面からの効率的な放熱を実現している。 In a straight tube type LED lamp, for example, a long casing has a structure divided into two along its longitudinal direction, and a long semicircular section with an outer surface exposed to the outside of the lamp. An LED module having a plurality of LEDs mounted thereon is placed on the base. A translucent cover having a long semi-circular cross section is fixed to the base so as to cover the LED module. In the straight tube type LED lamp on which the LED module is mounted, heat is generated from the LED itself due to the self-emission of the LED and the temperature rises, whereby the light output of the LED is lowered and the lifetime is shortened. As a countermeasure, efficient heat dissipation from the back of the base is realized by using the base of the straight tube LED lamp as a heat sink.
　一方、直管形ＬＥＤランプを含む照明装置には、外部商用電源から受電した電力を所定の直流電力に変換するためのコンバータ回路及び整流回路などの点灯回路が必要である。当該点灯回路は照明器具側に配置されるのが一般的であるが、直管形ＬＥＤランプの互換性および照明装置の設計自由度などの観点から、上記点灯回路を直管形ＬＥＤランプ内に組み込む形態が挙げられる。但し、上記点灯回路を直管形ＬＥＤランプ内に組み込む場合には、上記点灯回路は、ＬＥＤ発光を遮光しないように配置される必要があるため、一例として、点灯回路を、基台内に設けられた空洞に挿入する構造が挙げられる。しかしながら、上記構造の場合、基台内に設けられる上記空洞は空気層であるため、当該空気層の存在によりＬＥＤで発生した熱の伝熱経路が確保できず効率的な放熱が困難となる。 On the other hand, lighting devices including straight tube LED lamps require a lighting circuit such as a converter circuit and a rectifier circuit for converting electric power received from an external commercial power source into predetermined DC power. The lighting circuit is generally arranged on the side of the luminaire. However, from the viewpoint of the compatibility of the straight tube LED lamp and the design freedom of the lighting device, the lighting circuit is included in the straight tube LED lamp. The form to incorporate is mentioned. However, when the lighting circuit is incorporated in a straight tube type LED lamp, the lighting circuit needs to be arranged so as not to block the LED emission, so that the lighting circuit is provided in the base as an example. For example, a structure to be inserted into the formed cavity is mentioned. However, in the case of the above structure, since the cavity provided in the base is an air layer, a heat transfer path for heat generated in the LED cannot be secured due to the presence of the air layer, and efficient heat dissipation becomes difficult.
　一方、上記空洞が設けられていない基台は高い放熱性を有するが、上記点灯回路を収納するスペースが無い。この場合、直管形ＬＥＤランプの端部に配置された口金内部に上記点灯回路を挿入する構成が考えられる。しかしながら、本構成の場合、口金内部に上記点灯回路を挿入するために、口金を長くして口金の内部容積を稼ぐ必要があるため、ＬＥＤモジュールの長さを縮小させることになり、直管形ＬＥＤランプ端部の輝度を低下させてしまう。 On the other hand, the base without the cavity has high heat dissipation, but there is no space for housing the lighting circuit. In this case, the structure which inserts the said lighting circuit inside the nozzle | cap | die arrange | positioned at the edge part of a straight tube | pipe type LED lamp can be considered. However, in the case of this configuration, in order to insert the lighting circuit inside the base, it is necessary to lengthen the base and increase the internal volume of the base. Therefore, the length of the LED module is reduced, and the straight tube type The brightness at the end of the LED lamp is lowered.
　本発明は、上記問題を解決するためになされたものであり、優れた放熱性を確保しつつ直管形ランプ端部の輝度が低下しない照明用光源及び照明装置を提供することを目的とする。 The present invention has been made to solve the above-described problems, and an object thereof is to provide an illumination light source and an illumination device that ensure excellent heat dissipation and the brightness of the end of the straight tube lamp does not decrease. .
　上記目的を達成するために、本発明に係る照明用光源の一態様は、発光素子と、表面に前記発光素子が設けられた基板とを有する発光モジュールと、前記基板の表面を覆う長尺状の透光性カバーと、表面に前記発光モジュールが設けられた長尺状の基台と、前記透光性カバーの長手方向における端部に配置され、前記透光性カバーに覆われた、前記発光モジュールを点灯させるための部材を収容するケースと、前記透光性カバーの長手方向における端部に設けられた口金とを備え、前記ケースは、前記発光モジュールから出射した光を前記透光性カバーの外側へ向けて出射させるための、前記基台の表面から傾斜した反射面を有することを特徴とする。 In order to achieve the above object, one aspect of an illumination light source according to the present invention includes a light emitting module having a light emitting element, a substrate on which the light emitting element is provided, and a long shape covering the surface of the substrate. The translucent cover, a long base on which the light emitting module is provided on the surface, and an end portion in the longitudinal direction of the translucent cover, which is covered with the translucent cover, A case containing a member for lighting the light emitting module; and a base provided at an end portion in a longitudinal direction of the translucent cover, wherein the case transmits the light emitted from the light emitting module. A reflection surface inclined from the surface of the base for emitting light toward the outside of the cover is provided.
　また、本発明に係る照明用光源の一態様において、前記反射面と前記透光性カバーの内面との前記基台の表面に垂直な方向における距離は、前記透光性カバーの長手方向中央に近づくほど大きくてもよい。 Further, in one aspect of the illumination light source according to the present invention, a distance in a direction perpendicular to the surface of the base between the reflection surface and the inner surface of the translucent cover is at a longitudinal center of the translucent cover. It may be bigger as it gets closer.
　また、本発明に係る照明用光源の一態様において、前記ケースの前記反射面は、凸形状を有する曲面であってもよい。 Further, in one aspect of the illumination light source according to the present invention, the reflective surface of the case may be a curved surface having a convex shape.
　また、本発明に係る照明用光源の一態様において、前記ケースに収容される前記部材は、外部電源から供給される電力を所定の直流電力に変換する回路部材であってもよい。 Further, in one aspect of the illumination light source according to the present invention, the member housed in the case may be a circuit member that converts electric power supplied from an external power source into predetermined DC power.
　また、本発明に係る照明用光源の一態様において、前記ケースは、絶縁材料で構成されていてもよい。 In the aspect of the illumination light source according to the present invention, the case may be made of an insulating material.
　また、本発明に係る照明用光源の一態様において、前記ケースは、前記透光性カバーの長手方向における両端部に配置されていてもよい。 Further, in one aspect of the illumination light source according to the present invention, the case may be disposed at both ends in the longitudinal direction of the translucent cover.
　また、本発明に係る照明用光源の一態様において、前記透光性カバーは、長尺円筒の一部を長尺方向に沿って切り欠いた主開口を有する切り欠き円筒部材であり、前記基台は、前記主開口を塞ぐように前記透光性カバーを保持してもよい。 Also, in one aspect of the illumination light source according to the present invention, the translucent cover is a cut-out cylindrical member having a main opening in which a part of the long cylinder is cut out along the length direction. The base may hold the translucent cover so as to close the main opening.
　また、本発明に係る照明装置の一態様は、上記記載の照明用光源を備えることを特徴とする。 Further, an aspect of the illumination device according to the present invention is characterized by including the illumination light source described above.
　本発明によれば、直管形ＬＥＤランプの端部に設けられた点灯部材を収容するケースの反射面が、発光モジュールから直管形ＬＥＤランプの端部へ出射した光を透光性カバーの外側へ向けて出射するので、基台の放熱性を確保しつつ直管形ＬＥＤランプ端部の輝度低下を防止できる。 According to the present invention, the reflective surface of the case that houses the lighting member provided at the end of the straight tube LED lamp allows the light emitted from the light emitting module to the end of the straight tube LED lamp to be transmitted through the translucent cover. Since it radiates | emits toward the outer side, the brightness | luminance fall of a straight tube | pipe type LED lamp edge part can be prevented, ensuring the heat dissipation of a base.
図１は、本発明の実施の形態１に係る直管形ＬＥＤランプの構成を示す斜視図である。FIG. 1 is a perspective view showing a configuration of a straight tube LED lamp according to Embodiment 1 of the present invention. 図２は、本発明の実施の形態１に係る直管形ＬＥＤランプの分解斜視図である。FIG. 2 is an exploded perspective view of the straight tube LED lamp according to Embodiment 1 of the present invention. 図３は、実施の形態１に係る回路ケースの五面図である。FIG. 3 is a five-side view of the circuit case according to the first embodiment. 図４Ａは、実施の形態１に係る回路ケースの反射面の傾斜効果を説明する図である。FIG. 4A is a diagram for explaining an inclination effect of the reflection surface of the circuit case according to the first embodiment. 図４Ｂは、実施の形態１に係る回路ケースの反射面の曲面効果を説明する図である。FIG. 4B is a diagram for explaining the curved surface effect of the reflection surface of the circuit case according to the first embodiment. 図５は、本発明の実施の形態１の変形例に係る、点灯回路を分割配置した直管形ＬＥＤランプの構成を示す斜視図である。FIG. 5 is a perspective view showing a configuration of a straight tube LED lamp according to a modification of the first embodiment of the present invention in which lighting circuits are divided and arranged. 図６Ａは、実施の形態１に係る回路ケースを含む直管形ＬＥＤランプの端部の上面概略図である。6A is a schematic top view of an end portion of a straight tube LED lamp including a circuit case according to Embodiment 1. FIG. 図６Ｂは、実施の形態１の変形例に係る回路ケースを含む直管形ＬＥＤランプの端部の上面概略図である。6B is a schematic top view of an end portion of a straight tube LED lamp including a circuit case according to a modification of Embodiment 1. FIG. 図７は、本発明の実施の形態２に係る照明装置の概観斜視図である。FIG. 7 is a schematic perspective view of a lighting apparatus according to Embodiment 2 of the present invention. 図８Ａは、本発明に係る直管形ＬＥＤランプの放熱構造の第１の変形例を示す基台背面図である。FIG. 8A is a base rear view showing a first modification of the heat dissipation structure of the straight tube LED lamp according to the present invention. 図８Ｂは、本発明に係る直管形ＬＥＤランプの放熱構造の第２の変形例を示す基台背面図である。FIG. 8B is a base rear view showing a second modification of the heat dissipation structure of the straight tube LED lamp according to the present invention.
　以下、本発明の実施の形態に係る照明用光源及び照明装置について、図面を参照しながら説明する。なお、以下に説明する実施の形態は、いずれも本発明の好ましい一具体例を示すものである。したがって、以下の実施の形態で示される数値、形状、材料、構成要素、構成要素の配置位置及び接続形態などは、一例であって本発明を限定する主旨ではない。よって、以下の実施の形態における構成要素のうち、本発明の最上位概念を示す独立請求項に記載されていない構成要素については、任意の構成要素として説明される。 Hereinafter, an illumination light source and an illumination device according to an embodiment of the present invention will be described with reference to the drawings. Note that each of the embodiments described below shows a preferred specific example of the present invention. Therefore, the numerical values, shapes, materials, components, arrangement positions and connection forms of the components shown in the following embodiments are merely examples, and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements.
　なお、各図は、模式図であり、必ずしも厳密に図示されたものではない。また、各図において、同じ構成部材については同じ符号を付している。 Each figure is a schematic diagram and is not necessarily shown strictly. Moreover, in each figure, the same code | symbol is attached | subjected about the same structural member.
　以下の実施の形態では、本発明の照明用光源の一態様である直管形ＬＥＤランプ及び当該直管形ＬＥＤランプを用いた照明装置について例示する。 In the following embodiments, a straight tube LED lamp which is an embodiment of the illumination light source of the present invention and a lighting device using the straight tube LED lamp will be exemplified.
　（実施の形態１）
　まず、本発明の実施の形態１に係る直管形ＬＥＤランプ１について説明する。なお、本実施の形態に係る直管形ＬＥＤランプ１は、従来の直管形蛍光灯に代替する、直管形ＬＥＤランプである。また、本実施の形態に係る直管形ＬＥＤランプ１は、直管状の筐体が透光部材とヒートシンクとに分離された分割型の構造である。 (Embodiment 1)
First, a straight tube LED lamp 1 according to Embodiment 1 of the present invention will be described. The straight tube LED lamp 1 according to the present embodiment is a straight tube LED lamp that replaces a conventional straight tube fluorescent lamp. Further, the straight tube LED lamp 1 according to the present embodiment has a split structure in which a straight tubular casing is separated into a translucent member and a heat sink.
　［ランプの全体構成］
　まず、本発明の実施の形態１に係る直管形ＬＥＤランプ１の構成について、図１～図３を用いて説明する。 [Entire configuration of the lamp]
First, the configuration of the straight tube LED lamp 1 according to Embodiment 1 of the present invention will be described with reference to FIGS.
　図１は、本発明の実施の形態１に係る直管形ＬＥＤランプの構成を示す斜視図である。また、図２は、本発明の実施の形態１に係る直管形ＬＥＤランプの分解斜視図であり、図３は、本発明の実施の形態１に係る回路ケースの正面図及び側面図である。なお、図１では、直管形ＬＥＤランプ１の構造を明確に示すため透視図としているが、ＬＥＤモジュール１０及び回路ケース６０は、透光性カバー２０の外側からは視認できない場合もある。 FIG. 1 is a perspective view showing a configuration of a straight tube LED lamp according to Embodiment 1 of the present invention. 2 is an exploded perspective view of the straight tube LED lamp according to the first embodiment of the present invention, and FIG. 3 is a front view and a side view of the circuit case according to the first embodiment of the present invention. . 1 is a perspective view for clearly showing the structure of the straight tube LED lamp 1, the LED module 10 and the circuit case 60 may not be visible from the outside of the translucent cover 20.
　直管形ＬＥＤランプ１は、図１及び図２に示すように、従来の直管形蛍光灯（直管形蛍光ランプ）の代替照明として使用される長尺状の直管形ランプであって、透光性カバー２０と、基台３０と、ＬＥＤモジュール１０と、口金４０及び５０と、回路ケース６０と、点灯回路７０とを備えている。そして、直管形ＬＥＤランプ１では、基台３０、口金４０及び５０、回路ケース６０ならびに透光性カバー２０によって長尺状かつ円筒状のランプ筐体（外囲器）が構成されている。つまり、透光性カバー２０と基台３０とを連結することによって、外郭部材（挿通管）として、両端部に開口を有する管状の筐体が構成される。この筐体の長手方向（Ｙ軸方向）の端部には回路ケース６０及び点灯回路７０が設けられており、さらに、両端部には一対の口金４０及び５０が設けられている。また、上記筐体内には、ＬＥＤモジュール１０等が収納される。直管形ＬＥＤランプ１は、口金４０及び５０が照明器具のソケットに取り付けられることで照明器具に支持される。なお、本発明の要部である回路ケース６０の構造については後述する。 As shown in FIGS. 1 and 2, the straight tube LED lamp 1 is a long straight tube lamp used as an alternative to a conventional straight tube fluorescent lamp (straight tube fluorescent lamp). The translucent cover 20, the base 30, the LED module 10, the caps 40 and 50, the circuit case 60, and the lighting circuit 70 are provided. In the straight tube LED lamp 1, the base 30, the caps 40 and 50, the circuit case 60, and the translucent cover 20 constitute a long and cylindrical lamp housing (envelope). That is, by connecting the translucent cover 20 and the base 30, a tubular casing having openings at both ends is configured as an outer member (insertion tube). A circuit case 60 and a lighting circuit 70 are provided at the end in the longitudinal direction (Y-axis direction) of the casing, and a pair of caps 40 and 50 are provided at both ends. Further, the LED module 10 and the like are accommodated in the casing. The straight tube LED lamp 1 is supported by the lighting fixture by attaching the caps 40 and 50 to the socket of the lighting fixture. The structure of the circuit case 60 that is the main part of the present invention will be described later.
　以下、直管形ＬＥＤランプ１の各構成部材について詳述する。 Hereinafter, each component of the straight tube LED lamp 1 will be described in detail.
　［透光性カバー］
　透光性カバー２０は、ランプ筐体の外面を構成する長尺状のカバー部材であって、基台３０に設けられた部材、つまりＬＥＤモジュール１０及び点灯回路等を保護している。透光性カバー２０は、長尺円筒の一部を長尺方向（管軸方向）に沿って切り欠いて形成された主開口２１を有する切り欠き円筒部材、例えば略半円筒形状の部材から構成される。 [Translucent cover]
The translucent cover 20 is a long cover member constituting the outer surface of the lamp housing, and protects members provided on the base 30, that is, the LED module 10 and the lighting circuit. The translucent cover 20 includes a cutout cylindrical member having a main opening 21 formed by cutting out a part of a long cylinder along the long direction (tube axis direction), for example, a substantially semi-cylindrical member. Is done.
　透光性カバー２０は、ＬＥＤモジュール１０が発する光をランプ外部に透光する材料で構成されている。透光性カバー２０は、例えばアクリル等からなる透明樹脂材料又はガラスによって構成されており、所望の透明樹脂材料を樹脂成型することによって形成することができる。 The translucent cover 20 is made of a material that transmits light emitted from the LED module 10 to the outside of the lamp. The translucent cover 20 is made of, for example, a transparent resin material or glass made of acrylic or the like, and can be formed by resin molding a desired transparent resin material.
　透光性カバー２０としては、例えばシリカ（ＳｉＯ２）が７０～７２［％］のソーダ石灰ガラスによって構成された直管（ガラス管）、又はポリカーボネート等の樹脂材料から構成された直管（プラスチック管）を用いることができる。 As the translucent cover 20, for example, a straight pipe (glass pipe) made of soda-lime glass having silica (SiO 2 ) of 70 to 72 [%], or a straight pipe made of a resin material such as polycarbonate (plastic) Tube).
　なお、透光性カバー２０は、ＬＥＤモジュール１０からの光を拡散させるための光拡散機能を有する光拡散部を備えてもよい。これにより、ＬＥＤモジュール１０から発せられた光を、透光性カバー２０を通過する際に拡散させることができる。光拡散部としては、例えば、透光性カバー２０の内面及び外面の少なくともいずれかに形成された光拡散シート又は光拡散膜等がある。具体的には、シリカや炭酸カルシウム等の光拡散材（微粒子）を含有する樹脂や白色顔料を透光性カバー２０の内面及び外面の少なくともいずれかに付着させて形成された乳白色の光拡散膜がある。その他の光拡散部としては、透光性カバー２０の内部及び外部の少なくともいずれかに設けられたレンズ構造物、又は透光性カバー２０の内面及び外面の少なくともいずれかに形成された凹部又は凸部がある。例えば、透光性カバー２０の内面及び外面の少なくともいずれかにドットパターンを印刷したり、透光性カバー２０の一部を加工したりすることで、透光性カバー２０に光拡散機能（光拡散部）を持たせることもできる。また、透光性カバー２０そのものを、光拡散材が分散された樹脂材料等を用いて成型することで、透光性カバー２０に光拡散機能（光拡散部）を持たせることもできる。 The translucent cover 20 may include a light diffusing unit having a light diffusing function for diffusing light from the LED module 10. Thereby, the light emitted from the LED module 10 can be diffused when passing through the translucent cover 20. Examples of the light diffusion portion include a light diffusion sheet or a light diffusion film formed on at least one of the inner surface and the outer surface of the translucent cover 20. Specifically, a milky white light diffusing film formed by attaching a resin or white pigment containing a light diffusing material (fine particles) such as silica or calcium carbonate to at least one of the inner surface and the outer surface of the translucent cover 20. There is. As other light diffusion portions, a lens structure provided at least either inside or outside of the translucent cover 20, or a concave or convex portion formed on at least one of the inner surface and the outer surface of the translucent cover 20. There is a department. For example, by printing a dot pattern on at least one of the inner surface and the outer surface of the translucent cover 20 or by processing a part of the translucent cover 20, a light diffusion function (light (A diffusion part) can be provided. Moreover, the light-transmitting cover 20 itself can be molded using a resin material or the like in which a light diffusing material is dispersed, so that the light-transmitting cover 20 can have a light diffusing function (light diffusing portion).
　［基台］
　図１及び図２に示すように、基台３０は、ＬＥＤモジュール１０を保持（支持）するための支持基台であって、透光性カバー２０の主開口２１を塞ぐようにして透光性カバー２０と一体化されている。基台３０の透光性カバー２０側の内側部分は、ＬＥＤモジュール１０を載置する板状の載置部３１となっている。本実施の形態において、基台３０の表面である載置部３１の載置面は、長尺状の矩形平面である。 [Base]
As shown in FIGS. 1 and 2, the base 30 is a support base for holding (supporting) the LED module 10, and is translucent so as to close the main opening 21 of the translucent cover 20. It is integrated with the cover 20. An inner part of the base 30 on the side of the translucent cover 20 is a plate-like placement portion 31 on which the LED module 10 is placed. In this Embodiment, the mounting surface of the mounting part 31 which is the surface of the base 30 is an elongate rectangular plane.
　また、基台３０は、ＬＥＤモジュール１０で発生する熱を放熱するヒートシンクとして機能する。したがって、基台３０の背面は直管形ＬＥＤランプ１の外部に向かって露出する構成となっている。具体的には、基台３０の載置面の背面である外側部分には、放熱部として複数の放熱フィン３２が設けられている。放熱フィン３２は、直管形ＬＥＤランプ１の外部に向かって露出しており、載置部３１から直管形ＬＥＤランプ外方に突出するように設けられている。放熱フィン３２は、基台３０の長手方向（Ｙ軸方向）に沿って複数枚並行配置されている。なお、本明細書において、基台３０の長手方向とは、基台３０の表面を平面視したときの長辺と平行な方向を指し、基台３０の短手方向とは、基台３０の表面を平面視したときの短辺と平行な方向を指す。 In addition, the base 30 functions as a heat sink that dissipates heat generated in the LED module 10. Accordingly, the back surface of the base 30 is exposed toward the outside of the straight tube LED lamp 1. Specifically, a plurality of radiating fins 32 are provided as heat radiating portions on the outer side which is the back surface of the mounting surface of the base 30. The heat radiation fin 32 is exposed toward the outside of the straight tube LED lamp 1 and is provided so as to protrude outward from the mounting portion 31. A plurality of the radiation fins 32 are arranged in parallel along the longitudinal direction (Y-axis direction) of the base 30. In the present specification, the longitudinal direction of the base 30 refers to a direction parallel to the long side when the surface of the base 30 is viewed in plan, and the short direction of the base 30 is the width of the base 30. The direction parallel to the short side when the surface is viewed in plan.
　さらに、基台３０の短手方向の両端部には、透光性カバー２０の周方向の両側の縁部が係合される段差部が設けられている。透光性カバー２０と基台３０とは、透光性カバー２０を長手方向に基台３０にスライド又は透光性カバー２０を基台３０の上から嵌め込むことで係合させることができる。 Further, at both ends of the base 30 in the short direction, there are provided step portions to which the edges on both sides in the circumferential direction of the translucent cover 20 are engaged. The translucent cover 20 and the base 30 can be engaged by sliding the translucent cover 20 on the base 30 in the longitudinal direction or by fitting the translucent cover 20 from above the base 30.
　基台３０は、金属等の高熱伝導性材料によって構成することが好ましく、本実施の形態では、アルミニウムからなる押出材である。なお、基台３０は、樹脂により構成されてもよい。この場合、熱伝導率の高い樹脂材料を用いることが好ましい。 The base 30 is preferably made of a high thermal conductivity material such as metal, and is an extruded material made of aluminum in the present embodiment. In addition, the base 30 may be comprised with resin. In this case, it is preferable to use a resin material having a high thermal conductivity.
　なお、透光性カバー２０と基台３０とは、必要に応じて接着剤によって接着してもよい。 In addition, you may adhere | attach the translucent cover 20 and the base 30 with an adhesive agent as needed.
　［ＬＥＤモジュール］
　ＬＥＤモジュール１０は、直管形ＬＥＤランプ１の光源であり、透光性カバー２０によって覆われる形で、基台３０表面の載置部３１に固定されている。載置部３１への固定方法は、接着剤やネジ等による固定の他、ツメ、スライド、シリコン、リベット、カシメなど、様々である。 [LED module]
The LED module 10 is a light source of the straight tube LED lamp 1 and is fixed to the mounting portion 31 on the surface of the base 30 so as to be covered by the translucent cover 20. There are various fixing methods to the mounting portion 31 such as claw, slide, silicon, rivet, caulking, etc. in addition to fixing with an adhesive or a screw.
　ＬＥＤモジュール１０は、図２に示されるように、表面実装（ＳＭＤ：Ｓｕｒｆａｃｅ　Ｍｏｕｎｔ　Ｄｅｖｉｃｅ）型の発光モジュールであって、ライン状に光を発するライン状光源である。ＬＥＤモジュール１０は、実装基板８２と、実装基板８２上に一列に実装された複数のＬＥＤ素子８８と、配線８４と、電極端子８６とを備える。つまり、ＬＥＤモジュール１０は、透光性カバー２０及び基台３０で構成された長尺状筐体の内部に設けられ、発光素子であるＬＥＤ素子８８と、表面にＬＥＤ素子８８が設けられた実装基板８２とを有する発光モジュールである。 The LED module 10 is a surface-mounted (SMD: Surface Mount Device) type light emitting module as shown in FIG. 2, and is a line light source that emits light in a line shape. The LED module 10 includes a mounting substrate 82, a plurality of LED elements 88 mounted in a line on the mounting substrate 82, wiring 84, and electrode terminals 86. In other words, the LED module 10 is provided inside a long casing composed of the translucent cover 20 and the base 30, and is mounted with the LED element 88 as a light emitting element and the LED element 88 on the surface. A light emitting module including a substrate 82.
　実装基板８２は、少なくとも表面が絶縁性の材料により構成された、ＬＥＤ素子８８を実装するためのＬＥＤ実装用基板であって、例えば長尺矩形状の基板である。実装基板８２としては、例えば、ガラスエポキシ基板（ＣＥＭ－３、ＦＲ－４等）、紙フェノールや紙エポキシからなる基板（ＦＲ－１等）、ポリイミド等から構成される可撓性を有するフレキシブル基板、又はメタルベース基板を用いることができる。メタルベース基板としては、例えば、表面に絶縁膜が形成されたアルミニウム合金基板、鉄合金基板又は銅合金基板等を用いることができる。実装基板８２の表面及び裏面は、平面視したとき、矩形状となっている。 The mounting substrate 82 is an LED mounting substrate for mounting the LED element 88, at least the surface of which is made of an insulating material, and is, for example, a long rectangular substrate. As the mounting substrate 82, for example, a glass epoxy substrate (CEM-3, FR-4, etc.), a substrate made of paper phenol or paper epoxy (FR-1, etc.), a flexible flexible substrate made of polyimide, etc. Alternatively, a metal base substrate can be used. As the metal base substrate, for example, an aluminum alloy substrate, an iron alloy substrate, or a copper alloy substrate having an insulating film formed on the surface can be used. The front and back surfaces of the mounting substrate 82 are rectangular when viewed in plan.
　実装基板８２は、その長手方向（Ｙ軸方向）が基台３０の長手方向と平行となり、その長手方向と直交する短手方向（Ｘ軸方向）が基台３０の短手方向と平行となるように、基台３０の表面に配設される。 The mounting substrate 82 has a longitudinal direction (Y-axis direction) parallel to the longitudinal direction of the base 30, and a lateral direction (X-axis direction) orthogonal to the longitudinal direction is parallel to the lateral direction of the base 30. As described above, it is disposed on the surface of the base 30.
　複数のＬＥＤ素子８８は、それぞれ発光素子の一例であって、実装基板８２の表面に直接実装されている。複数のＬＥＤ素子８８は、実装基板８２の長手方向に沿ってライン状（一直線状）に一列に配列されている。 Each of the plurality of LED elements 88 is an example of a light emitting element, and is directly mounted on the surface of the mounting substrate 82. The plurality of LED elements 88 are arranged in a line (in a straight line) along the longitudinal direction of the mounting substrate 82.
　ＬＥＤ素子８８は、ＬＥＤチップと蛍光体とがパッケージ化された、いわゆるＳＭＤ型の発光素子であり、例えば白色光を発する白色ＬＥＤ素子である。ＬＥＤ素子８８は、パッケージと、パッケージの凹部底面に実装されたＬＥＤと、パッケージの凹部に充填され、ＬＥＤを封止する蛍光体含有樹脂である封止部材と、金属配線等とで構成される。 The LED element 88 is a so-called SMD type light emitting element in which an LED chip and a phosphor are packaged. For example, the LED element 88 is a white LED element that emits white light. The LED element 88 includes a package, an LED mounted on the bottom surface of the recess of the package, a sealing member that is a phosphor-containing resin that fills the recess of the package and seals the LED, a metal wiring, and the like. .
　パッケージは、非透光性樹脂（白樹脂等）で成型された容器であり、逆円錐台形状の凹部（キャビティ）を備える。凹部の内側面は傾斜面であり、ＬＥＤからの光を上方に反射させるように構成されている。なお、パッケージが透光性であり、パッケージ側面からも光が広範囲に出射する構成であってもよい。 The package is a container molded with a non-translucent resin (white resin or the like), and includes an inverted frustoconical recess (cavity). The inner side surface of the recess is an inclined surface and is configured to reflect light from the LED upward. Note that the package may be light-transmitting, and light may be emitted in a wide range from the side surface of the package.
　各ＬＥＤは、発光素子の一例であって、単色の可視光を発するベアチップであり、ダイアタッチ材（ダイボンド材）によってパッケージの凹部の底面であって実装基板８２上にダイボンディング実装されている。各ＬＥＤとしては、例えば青色光を発光する青色発光ＬＥＤチップを用いることができる。青色発光ＬＥＤチップとしては、例えばＩｎＧａＮ系の材料によって構成された、中心波長が４４０ｎｍ～４７０ｎｍの窒化ガリウム系の半導体発光素子を用いることができる。 Each LED is an example of a light-emitting element and is a bare chip that emits monochromatic visible light, and is die-bonded to the bottom surface of the recess of the package and mounted on the mounting substrate 82 by a die attach material (die bond material). As each LED, for example, a blue light emitting LED chip that emits blue light can be used. As the blue light emitting LED chip, for example, a gallium nitride based semiconductor light emitting element having a central wavelength of 440 nm to 470 nm made of an InGaN based material can be used.
　複数のＬＥＤにおいて、チップ上面には電流を供給するためのｐ側電極及びｎ側電極が形成されており、ｐ側電極及びｎ側電極のそれぞれと配線８４とがワイヤボンディングされている。 In a plurality of LEDs, a p-side electrode and an n-side electrode for supplying current are formed on the upper surface of the chip, and each of the p-side electrode and the n-side electrode and the wiring 84 are wire-bonded.
　封止部材は、光波長変換体である蛍光体を含む蛍光体含有樹脂であって、ＬＥＤからの光を波長変換すると共に、実装基板８２上の全てのＬＥＤを一括封止してＬＥＤを保護する。封止部材は、パッケージの凹部に充填されており、当該凹部の開口面まで封入されている。封止部材としては、例えば、ＬＥＤが青色ＬＥＤである場合、ＹＡＧ（イットリウム・アルミニウム・ガーネット）系の黄色蛍光体粒子をシリコン樹脂に分散させた蛍光体含有樹脂を用いることができる。この場合、黄色蛍光体粒子は青色ＬＥＤの青色光によって励起されて黄色光を放出するので、封止部材からは、励起された黄色光と青色ＬＥＤの青色光とによって白色光が放出される。なお、封止部材に、シリカ等の光拡散材も含有させても構わない。 The sealing member is a phosphor-containing resin containing a phosphor that is a light wavelength converter, and converts the wavelength of the light from the LED and simultaneously seals all the LEDs on the mounting substrate 82 to protect the LED. To do. The sealing member is filled in the recess of the package, and is sealed up to the opening surface of the recess. For example, when the LED is a blue LED, a phosphor-containing resin obtained by dispersing YAG (yttrium, aluminum, garnet) -based yellow phosphor particles in a silicon resin can be used as the sealing member. In this case, since the yellow phosphor particles are excited by the blue light of the blue LED to emit yellow light, white light is emitted from the sealing member by the excited yellow light and the blue light of the blue LED. The sealing member may contain a light diffusing material such as silica.
　配線８４は、タングステン（Ｗ）又は銅（Ｃｕ）等からなる金属配線であり、その表面が露出し、複数のＬＥＤ素子８８同士を電気的に接続するとともにＬＥＤ素子８８と電極端子８６とを電気的に接続するために所定形状にパターン形成されている。 The wiring 84 is a metal wiring made of tungsten (W), copper (Cu), or the like. The surface of the wiring 84 is exposed to electrically connect the LED elements 88 to each other and to electrically connect the LED elements 88 and the electrode terminals 86. For the purpose of connection, a pattern is formed in a predetermined shape.
　電極端子８６は、点灯回路７０から直流電力を受電すると共にＬＥＤに直流電力を給電する受給電部であり、その表面が露出し、配線８４に電気的に接続されている。電極端子８６が受電した直流電圧がＬＥＤに供給されることにより、ＬＥＤが発光し、ＬＥＤから所望の光が放出される。なお、２つの電極端子８６は、封止部材を基準として実装基板８２の一方の長辺側に片寄せられている。 The electrode terminal 86 is a power supply / reception unit that receives DC power from the lighting circuit 70 and supplies DC power to the LED. The surface of the electrode terminal 86 is exposed and is electrically connected to the wiring 84. When the DC voltage received by the electrode terminal 86 is supplied to the LED, the LED emits light, and desired light is emitted from the LED. Note that the two electrode terminals 86 are biased toward one long side of the mounting substrate 82 with respect to the sealing member.
　なお、基台３０に載置するＬＥＤモジュール１０の個数は、１つ又は複数のいずれであっても構わない。複数個のＬＥＤモジュール１０を用いる場合、ＬＥＤモジュール１０は基台３０の長手方向に沿って一列に並べられる。 In addition, the number of the LED modules 10 mounted on the base 30 may be either one or a plurality. When a plurality of LED modules 10 are used, the LED modules 10 are arranged in a line along the longitudinal direction of the base 30.
　［点灯回路］
　図２には、点灯回路７０の外観斜視図が図示されている。点灯回路７０は、外部電源から入力された交流電力を直流電力に変換して出力するＬＥＤ点灯回路であって、回路基板７１と、回路基板７１に実装された所定の回路素子群７２とを備える。つまり、点灯回路７０は、回路ケース６０に収容され、外部電源から供給される電力を所定の直流電力に変換する回路部材である。 [Lighting circuit]
FIG. 2 is an external perspective view of the lighting circuit 70. The lighting circuit 70 is an LED lighting circuit that converts AC power input from an external power source into DC power and outputs the power, and includes a circuit board 71 and a predetermined circuit element group 72 mounted on the circuit board 71. . That is, the lighting circuit 70 is a circuit member that is accommodated in the circuit case 60 and converts electric power supplied from an external power source into predetermined DC power.
　回路基板７１は、実装された電子部品を互いに配線するための所定の配線パターンが形成されたプリント基板であり、例えば、ガラスエポキシ基板、セラミックス基板、可撓性のフレキシブル基板（ＦＰＣ）、又は、放熱性に優れたメタル基板等を用いることができる。 The circuit board 71 is a printed board on which a predetermined wiring pattern for wiring the mounted electronic components is formed, for example, a glass epoxy board, a ceramic board, a flexible flexible board (FPC), or A metal substrate having excellent heat dissipation can be used.
　回路素子群７２は、ＬＥＤモジュール１０のＬＥＤ素子８８を点灯させるための複数の回路素子によって構成される。本実施の形態において、回路素子群７２は、整流回路素子とヒューズ素子とを有する。整流回路素子は、４つのダイオードで構成されたダイオードブリッジ回路であり、入力された交流電力を全波整流する。 The circuit element group 72 includes a plurality of circuit elements for lighting the LED elements 88 of the LED module 10. In the present embodiment, the circuit element group 72 includes a rectifier circuit element and a fuse element. The rectifier circuit element is a diode bridge circuit composed of four diodes, and full-wave rectifies the input AC power.
　回路素子群７２を構成する回路素子は、回路基板７１に形成された配線パターンによって電気的に接続されている。なお、回路素子群７２の回路素子としては、その他必要に応じて、抵抗、コンデンサ、コイル、ダイオード又はトランジスタ等が用いられる。 The circuit elements constituting the circuit element group 72 are electrically connected by a wiring pattern formed on the circuit board 71. In addition, as a circuit element of the circuit element group 72, a resistor, a capacitor, a coil, a diode, a transistor, or the like is used as necessary.
　また、点灯回路７０は、受電用の口金４０に設けられた一対の給電ピン４１から交流電力を受電する入力ソケットと、ＬＥＤモジュール１０のＬＥＤ素子８８を点灯させるための直流電力を出力する出力ソケットとを備える。入力ソケットには、リード線を介して一対の給電ピン４１と電気的に接続された入力コネクタ端子が差し込まれる。また、出力ソケットには、リード線を介して実装基板８２上の電極端子８６と電気的に接続された出力コネクタ端子が差し込まれる。なお、入力ソケット及び出力ソケットとは、回路基板７１に形成された配線パターンによって回路素子群７２の回路素子と電気的に接続されている。 The lighting circuit 70 includes an input socket that receives AC power from a pair of power supply pins 41 provided on the power receiving base 40 and an output socket that outputs DC power for lighting the LED element 88 of the LED module 10. With. An input connector terminal electrically connected to the pair of power supply pins 41 is inserted into the input socket via a lead wire. In addition, an output connector terminal electrically connected to the electrode terminal 86 on the mounting substrate 82 is inserted into the output socket via a lead wire. The input socket and the output socket are electrically connected to the circuit elements of the circuit element group 72 by a wiring pattern formed on the circuit board 71.
　また、点灯回路７０には、ＬＥＤモジュール１０に供給される電力を通すコネクタ及びＬＥＤモジュール１０を発光させるための回路等が設けられている。また、本実施の形態における直管形ＬＥＤランプ１は、ＬＥＤモジュール１０に対して口金４０のみから給電を行う片側給電方式を採用している。つまり、直管形ＬＥＤランプ１は、照明器具等からの電力を口金４０のみから受電する。 In addition, the lighting circuit 70 is provided with a connector for passing power supplied to the LED module 10 and a circuit for causing the LED module 10 to emit light. Further, the straight tube LED lamp 1 in the present embodiment employs a one-side power feeding method in which power is fed to the LED module 10 only from the base 40. That is, the straight tube LED lamp 1 receives power from a lighting fixture or the like only from the base 40.
　上記回路構成により、ＬＥＤモジュール１０のＬＥＤ素子８８には、電極端子８６を介して所定の直流電圧が印加される。 With the above circuit configuration, a predetermined DC voltage is applied to the LED element 88 of the LED module 10 via the electrode terminal 86.
　なお、点灯回路７０は、上述したような交流電力を直流電力に変換するコンバータ機能を必ずしも有する必要はない。直管形ＬＥＤランプ１が取り付けられる照明器具内で既に交流－直流変換された電力を整流する機能を有する回路であってもよい。この場合には、回路素子群７２は、例えば、入力された直流電力を整流するダイオードブリッジ回路（整流回路）及びヒューズ素子等によって構成される。整流する機能を有する回路素子群７２としては、その他必要に応じて、抵抗、コンデンサ、コイル、ダイオード又はトランジスタ等を備えてもよい。 Note that the lighting circuit 70 does not necessarily have a converter function for converting AC power as described above into DC power. It may be a circuit having a function of rectifying electric power that has already been subjected to AC-DC conversion in a lighting fixture to which the straight tube LED lamp 1 is attached. In this case, the circuit element group 72 includes, for example, a diode bridge circuit (rectifier circuit) that rectifies input DC power, a fuse element, and the like. The circuit element group 72 having a function of rectifying may include a resistor, a capacitor, a coil, a diode, a transistor, or the like as necessary.
　［回路ケース］
　図２に示されるように、点灯回路７０が収容された回路ケース６０は、基台３０の長手方向における端部に配置される。回路ケース６０の少なくとも一部は、ＬＥＤモジュール１０とともに、透光性カバー２０で覆われる。また、回路ケース６０は、上記長尺状筐体の長手方向において、口金４０と基台３０との間に配置され、一対のネジ４３により、口金４０及び基台３０に固定される。つまり、回路ケース６０は、透光性カバー２０の長手方向（Ｙ軸方向）における端部に配置され、透光性カバー２０に覆われた、ＬＥＤモジュール１０を点灯させるための点灯回路７０を収容するケースである。 [Circuit case]
As shown in FIG. 2, the circuit case 60 in which the lighting circuit 70 is accommodated is disposed at the end of the base 30 in the longitudinal direction. At least a part of the circuit case 60 is covered with the translucent cover 20 together with the LED module 10. The circuit case 60 is disposed between the base 40 and the base 30 in the longitudinal direction of the long casing, and is fixed to the base 40 and the base 30 by a pair of screws 43. That is, the circuit case 60 is disposed at an end portion in the longitudinal direction (Y-axis direction) of the translucent cover 20 and houses the lighting circuit 70 for lighting the LED module 10 covered with the translucent cover 20. This is the case.
　ここで、回路ケース６０は、ＬＥＤモジュール１０から出射した光を透光性カバー２０の外側へ向けて出射させるための、基台３０の載置部３１の表面から傾斜した反射面を有している。この反射面構造により、直管形ＬＥＤランプ１の端部に、自発光しない回路ケース６０が配置されても、ＬＥＤモジュール１０から出射した光を透光性カバー２０の外側へ向けて出射させるので、直管形ＬＥＤランプ１端部の輝度を低下させない。さらに、点灯回路を、基台の内部に確保された空洞に点灯回路を設けた直管形ＬＥＤランプと比較して、基台背面からの放熱効率を向上させることが可能となる。 Here, the circuit case 60 has a reflective surface inclined from the surface of the mounting portion 31 of the base 30 for emitting the light emitted from the LED module 10 toward the outside of the translucent cover 20. Yes. With this reflecting surface structure, even if the circuit case 60 that does not emit light is disposed at the end of the straight tube LED lamp 1, the light emitted from the LED module 10 is emitted toward the outside of the translucent cover 20. The brightness at the end of the straight tube LED lamp 1 is not lowered. Furthermore, the heat radiation efficiency from the back of the base can be improved by comparing the lighting circuit with a straight tube LED lamp in which the lighting circuit is provided in a cavity secured inside the base.
　なお、回路ケース６０は、ＬＥＤモジュール１０から出射した光に対して、高い反射率を有する材料で構成されていることが好ましい。さらに、回路ケース６０は、回路素子群７２及び配線パターンを収容しているので、絶縁材料で構成されていることが好ましい。絶縁性を確保しつつ、高い光反射率を有する材料としては、例えば、ポリカーボネートが挙げられる。これにより、回路ショートの不具合発生を防止しつつ、直管形ＬＥＤランプ端部の輝度低下を抑制できる。 In addition, it is preferable that the circuit case 60 is comprised with the material which has a high reflectance with respect to the light radiate | emitted from the LED module 10. FIG. Furthermore, since the circuit case 60 accommodates the circuit element group 72 and the wiring pattern, the circuit case 60 is preferably made of an insulating material. An example of a material having high light reflectivity while ensuring insulation is polycarbonate. Thereby, the brightness | luminance fall of a straight tube | pipe type LED lamp edge part can be suppressed, preventing the malfunction generation | occurrence | production of a circuit short circuit.
　図３は、実施の形態１に係る回路ケースの五面図である。同図に図示された側面図のように、回路ケース６０の反射面は、基台３０の長手方向から傾斜しており、回路ケース６０の反射面と透光性カバー２０の内面との基台３０表面に垂直な方向（Ｚ軸方向）における距離は、上記長尺状筐体の長手方向の中心に近づくほど（Ｙ軸正方向につれて）大きい。 FIG. 3 is a five-side view of the circuit case according to the first embodiment. As shown in the side view shown in the figure, the reflection surface of the circuit case 60 is inclined from the longitudinal direction of the base 30, and the base between the reflection surface of the circuit case 60 and the inner surface of the translucent cover 20. The distance in the direction perpendicular to the surface 30 (Z-axis direction) is larger as it approaches the center in the longitudinal direction of the elongated casing (in the positive Y-axis direction).
　図４Ａは、実施の形態１に係る回路ケースの反射面の傾斜効果を説明する図である。図４Ａに図示されているように、回路ケース６０の反射面の傾斜構造により、ＬＥＤ素子８８から出射された光のうち、上記長尺状筐体の長手方向に出射された光を、効率よく透光性カバー２０の外側へ向けて出射させることが可能となる。 FIG. 4A is a diagram for explaining an inclination effect of the reflection surface of the circuit case according to the first embodiment. As shown in FIG. 4A, the light emitted from the LED element 88 in the longitudinal direction of the long casing is efficiently converted out of the light emitted from the LED element 88 by the inclined structure of the reflection surface of the circuit case 60. The light can be emitted toward the outside of the translucent cover 20.
　さらに、図３に表されたように、回路ケース６０の反射面は、凸形状を有する曲面であることが好ましい。 Furthermore, as shown in FIG. 3, the reflection surface of the circuit case 60 is preferably a curved surface having a convex shape.
　図４Ｂは、実施の形態１に係る回路ケースの反射面の曲面効果を説明する図である。図４Ｂに図示されているように、回路ケース６０の反射面の曲面構造により、ＬＥＤ素子８８から出射された光を、透光性カバー２０の外側へ向けて広範囲に出射させることが可能となる。 FIG. 4B is a diagram for explaining the curved surface effect of the reflecting surface of the circuit case according to the first embodiment. As shown in FIG. 4B, the curved surface structure of the reflection surface of the circuit case 60 allows the light emitted from the LED element 88 to be emitted in a wide range toward the outside of the translucent cover 20. .
　なお、上記回路ケース６０の反射面は、基台３０の載置部３１の表面から傾斜した平面であってもよい。この場合には、図４Ｂに図示されたような等方的な曲面効果は得られないが、図４Ａに図示された効果が奏される。 The reflective surface of the circuit case 60 may be a plane inclined from the surface of the mounting portion 31 of the base 30. In this case, the isotropic curved surface effect as shown in FIG. 4B cannot be obtained, but the effect shown in FIG. 4A is achieved.
　上記特徴を有する回路ケース６０の長尺状筐体の長手方向における長さは、できる限り短いほうが好ましい。典型的な直管形ＬＥＤランプ１として、例えば、透光性カバー２０の外径寸法が２８ｍｍφ、口金４０の外径寸法が３０ｍｍφ、口金４０の長尺状筐体の長手方向における長さが２６ｍｍであるとした場合、口金４０を含む回路ケース６０の長尺状筐体の長手方向における長さは７０ｍｍ以内であることが好ましい。上記寸法関係を確保することにより、直管形ＬＥＤランプ１端部の輝度低下が効果的に抑制される。 The length in the longitudinal direction of the long casing of the circuit case 60 having the above characteristics is preferably as short as possible. As a typical straight tube type LED lamp 1, for example, the outer diameter of the translucent cover 20 is 28 mmφ, the outer diameter of the base 40 is 30 mmφ, and the length of the long casing of the base 40 is 26 mm in the longitudinal direction. In this case, the length of the long casing of the circuit case 60 including the base 40 in the longitudinal direction is preferably within 70 mm. By ensuring the above dimensional relationship, a decrease in luminance at the end of the straight tube LED lamp 1 is effectively suppressed.
　なお、回路ケース６０の長尺状筐体の長手方向における長さを短縮化するため、回路ケースを、基台３０の長手方向における片方の端部だけでなく、両端に配置してもよい。 In addition, in order to shorten the length of the long casing of the circuit case 60 in the longitudinal direction, the circuit case may be disposed not only at one end in the longitudinal direction of the base 30 but also at both ends.
　また、上記実施形態では片側給電方式を挙げたが、高ワット化が進んだ場合には、当該片側給電方式では適用が困難な場合が想定される。高ワット化の対応としては、点灯回路の大型化に伴い、両側給電方式で低ワット用の回路を左右に配置する、または、点灯回路を２分割して左右に配置し、分割された点灯回路を基台内部配線により接続する、ことが好ましい。 In the above embodiment, the single-side power supply method is described. However, when the wattage is advanced, it is assumed that the single-side power supply method is difficult to apply. To cope with higher wattage, as the lighting circuit becomes larger, a low-wattage circuit is arranged on the left and right with a double-sided power supply system, or the lighting circuit is divided into two on the left and right, and the divided lighting circuit Are preferably connected by base internal wiring.
　図５は、本発明の実施の形態１の変形例に係る、点灯回路を分割配置した直管形ＬＥＤランプの構成を示す斜視図である。同図に示されるように、直管形ＬＥＤランプ３は、透光性カバー２０と、基台３０と、ＬＥＤモジュール１０と、一対の口金４０と、一対の回路ケース６２とを備えている。透光性カバー２０と基台３０とで構成された筐体の長手方向（Ｙ軸方向）の両端部には回路ケース６２及び点灯回路が設けられている。さらに、回路ケース６２の外側には、回路ケース６２を覆うように一対の口金４０が設けられている。図５に示された直管形ＬＥＤランプ３は、例えば、高ワット仕様のものであり、点灯回路の大型化に伴い低ワット用の点灯回路を左右の回路ケース６２に分配して配置した両側給電方式を採っている。また、低ワット用の点灯回路を左右の回路ケース６２に分配して配置し、分割された点灯回路が基台３０内部を通る配線により接続されていてもよい。 FIG. 5 is a perspective view showing a configuration of a straight tube LED lamp in which lighting circuits are divided and arranged according to a modification of the first embodiment of the present invention. As shown in the figure, the straight tube LED lamp 3 includes a translucent cover 20, a base 30, an LED module 10, a pair of caps 40, and a pair of circuit cases 62. A circuit case 62 and a lighting circuit are provided at both ends in the longitudinal direction (Y-axis direction) of the casing formed by the translucent cover 20 and the base 30. Further, a pair of caps 40 are provided outside the circuit case 62 so as to cover the circuit case 62. The straight tube LED lamp 3 shown in FIG. 5 is, for example, of a high watt specification, and both sides of the lighting circuit for low watts distributed to the left and right circuit cases 62 in accordance with the increase in the size of the lighting circuit. The power supply method is adopted. Moreover, the lighting circuit for low watts may be distributed and arranged in the left and right circuit cases 62, and the divided lighting circuits may be connected by wiring passing through the inside of the base 30.
　以上、本実施の形態に係る両側給電方式の直管形ＬＥＤランプ３によれば、直管形ＬＥＤランプ３の端部である口金４０の近辺にもＬＥＤ素子８８を配置できるので、直管形ＬＥＤランプ３端部の輝度低下を効果的に防止できる。これを実現する形態としては、点灯回路７０を２つの回路ケース６２に分割して収容し、当該２つの回路ケース６２を直管形ＬＥＤランプ３の両端に分配して配置することが挙げられる。これにより、直管形ＬＥＤランプ３の両端における輝度分布を対称にすることが可能となる。 As described above, according to the straight-tube LED lamp 3 of the double-sided power feeding system according to the present embodiment, the LED element 88 can be disposed near the base 40 that is the end of the straight-tube LED lamp 3. It is possible to effectively prevent a decrease in luminance at the end of the LED lamp 3. As a form for realizing this, the lighting circuit 70 is divided and accommodated in two circuit cases 62, and the two circuit cases 62 are distributed and arranged at both ends of the straight tube LED lamp 3. This makes it possible to make the luminance distribution at both ends of the straight tube LED lamp 3 symmetrical.
　［口金］
　口金４０は、ＬＥＤモジュール１０のＬＥＤ素子に給電するための給電用口金である。口金４０は、ＬＥＤモジュール１０のＬＥＤ素子を点灯させるための電力を直管形ＬＥＤランプ１の外部電源から受電する受電用口金でもある。 [Base]
The base 40 is a power supply base for supplying power to the LED elements of the LED module 10. The base 40 is also a power receiving base that receives power for lighting the LED elements of the LED module 10 from an external power source of the straight tube LED lamp 1.
　口金４０は、図１及び図２に示されるように、回路ケース６０と接し、透光性カバー２０と基台３０とで構成される長尺状筐体の長手方向における端部の一方を蓋する有底筒形状となっている。本実施の形態における口金４０は、ポリブチレンテレフタレート（ＰＢＴ）等の合成樹脂からなる口金本体と、真ちゅう等の金属材料からなる一対の受電用接続端子である給電ピン４１とからなる。一対の給電ピン４１は、口金本体の底部から外方に向かって突出するように構成されている。給電ピン４１は、ＬＥＤ素子を点灯させるために給電を行うピンであって、照明器具等の外部機器から所定の電力を受ける受電ピンとして機能する。例えば、口金４０を照明器具のソケットに装着させることによって、一対の給電ピン４１は照明器具に内蔵された電源装置から電力を受ける状態となる。また、給電ピン４１は、照明器具のソケットに着脱可能に取り付けるための接続端子としても機能している。口金４０と、回路ケース６０と、基台３０とは、上記長尺状筐体の長手方向において、一対のネジ４３及びネジ穴４２により固定される。 As shown in FIGS. 1 and 2, the base 40 is in contact with the circuit case 60, and covers one of the end portions in the longitudinal direction of the long casing composed of the translucent cover 20 and the base 30. It has a bottomed cylindrical shape. The base 40 in the present embodiment includes a base body made of a synthetic resin such as polybutylene terephthalate (PBT) and a pair of power receiving pins 41 that are a pair of power receiving connection terminals made of a metal material such as brass. The pair of power supply pins 41 are configured to protrude outward from the bottom of the base body. The power supply pin 41 is a pin that supplies power to turn on the LED element, and functions as a power reception pin that receives predetermined power from an external device such as a lighting fixture. For example, by attaching the base 40 to the socket of the lighting fixture, the pair of power supply pins 41 is in a state of receiving power from the power supply device built in the lighting fixture. The power supply pin 41 also functions as a connection terminal for detachably attaching to the socket of the lighting fixture. The base 40, the circuit case 60, and the base 30 are fixed by a pair of screws 43 and screw holes 42 in the longitudinal direction of the long casing.
　口金５０は、非給電用口金である。つまり、口金５０は、直管形ＬＥＤランプ１を照明器具に取り付ける機能を有する。 The base 50 is a non-power supply base. That is, the base 50 has a function of attaching the straight tube LED lamp 1 to a lighting fixture.
　口金５０は、図１及び図２に示されるように、透光性カバー２０と基台３０とで構成される上記長尺状筐体の長手方向における端部の他方を蓋する有底筒形状となっている。本実施の形態における口金５０は、ＰＢＴ等の合成樹脂からなる口金本体と、真ちゅう等の金属材料からなる一対の非給電ピン５１とからなる。一対の非給電ピン５１は、口金本体の底部から外方に向かって突出するように構成される。 As shown in FIGS. 1 and 2, the base 50 has a bottomed cylindrical shape that covers the other end in the longitudinal direction of the long casing composed of the translucent cover 20 and the base 30. It has become. The base 50 in the present embodiment includes a base body made of a synthetic resin such as PBT and a pair of non-power-feeding pins 51 made of a metal material such as brass. The pair of non-feeding pins 51 are configured to protrude outward from the bottom of the base body.
　なお、口金５０にアース機能を持たせても構わない。この場合、非給電ピン５１は、アースピンとして機能し、非給電ピン５１と基台３０とがアース接続されることで、基台３０は照明器具を介して接地される。口金５０と、基台３０とは、上記長尺状筐体の長手方向において、一対のネジ５３及びネジ穴５２により固定される。 It should be noted that the base 50 may have a ground function. In this case, the non-power feeding pin 51 functions as a ground pin, and the base 30 is grounded via the lighting fixture by grounding the non-power feeding pin 51 and the base 30. The base 50 and the base 30 are fixed by a pair of screws 53 and screw holes 52 in the longitudinal direction of the elongated casing.
　このように、直管形ＬＥＤランプ１は、片側給電方式を採用しており、ＬＥＤモジュール１０を点灯させるための電力は、直管形ＬＥＤランプ１の一方の端部のみに設けられた一対の給電ピン４１から、点灯回路７０を介して給電されるように構成されている。 As described above, the straight tube LED lamp 1 employs a one-sided power feeding method, and the power for lighting the LED module 10 is a pair of electrodes provided only at one end of the straight tube LED lamp 1. Power is supplied from the power supply pin 41 via the lighting circuit 70.
　以上、実施の形態１に係る直管形ＬＥＤランプ１の構成について説明したが、回路ケース６０の形状は、図３に図示された形状に限られない。 As mentioned above, although the structure of the straight tube | pipe type LED lamp 1 which concerns on Embodiment 1 was demonstrated, the shape of the circuit case 60 is not restricted to the shape illustrated in FIG.
　図６Ａは、実施の形態１に係る回路ケースを含む直管形ＬＥＤランプの端部の上面概略図であり、図６Ｂは、実施の形態１の変形例に係る回路ケースを含む直管形ＬＥＤランプの端部の上面概略図である。 6A is a schematic top view of an end portion of a straight tube LED lamp including a circuit case according to Embodiment 1, and FIG. 6B is a straight tube LED including a circuit case according to a modification of Embodiment 1. It is the upper surface schematic of the edge part of a lamp | ramp.
　本実施の形態に係る回路ケースは、上述したように、基台３０の表面から傾斜した反射面を有し、さらに当該反射面は、凸形状を有する曲面であることが好ましい。この形状を最適化すると、図６Ａに図示されたように、回路ケース６０は、基台３０の短手方向中央部において最も突出した形状が好ましい。これに対して、図６Ｂに図示された変形例に係る回路ケース６１は、基台３０の短手方向中央部において基台３０の長手方向端部へ後退した凹部を一部有している。なお、回路ケース６１の先端における上記凹部以外の形状は、図６Ａに図示された回路ケース６０と同様の局面を有している。回路ケース６１先端の凹部形状により、ＬＥＤ素子８８を、上記長尺状筐体の長手方向の、より端部へ配置することが可能となる。よって、直管形ＬＥＤランプ１端部の輝度低下をより効果的に抑制できる。 As described above, the circuit case according to the present embodiment has a reflective surface inclined from the surface of the base 30, and the reflective surface is preferably a curved surface having a convex shape. When this shape is optimized, as shown in FIG. 6A, the circuit case 60 preferably has a shape that protrudes most at the center in the short direction of the base 30. On the other hand, the circuit case 61 according to the modification shown in FIG. 6B has a part of the recess that is retracted to the longitudinal end portion of the base 30 at the central portion in the short direction of the base 30. In addition, shapes other than the said recessed part in the front-end | tip of the circuit case 61 have the same situation as the circuit case 60 illustrated by FIG. 6A. Due to the shape of the recess at the tip of the circuit case 61, the LED element 88 can be arranged at the end in the longitudinal direction of the long casing. Therefore, the brightness | luminance fall of straight pipe | tube type LED lamp 1 edge part can be suppressed more effectively.
　（実施の形態２）
　次に、本発明の実施の形態２に係る照明装置２について、図７を用いて説明する。 (Embodiment 2)
Next, the illuminating device 2 which concerns on Embodiment 2 of this invention is demonstrated using FIG.
　図７は、本発明の実施の形態２に係る照明装置の概観斜視図である。同図に示されるように、本実施の形態に係る照明装置２は、ベースライトであって、直管形ＬＥＤランプ１と照明器具１００とを備える。 FIG. 7 is a schematic perspective view of the lighting apparatus according to Embodiment 2 of the present invention. As shown in the figure, the lighting device 2 according to the present embodiment is a base light, and includes a straight tube LED lamp 1 and a lighting fixture 100.
　直管形ＬＥＤランプ１は、実施の形態１に係る直管形ＬＥＤランプ１であって、照明装置２の照明用光源として用いられる。なお、本実施の形態では、２本の直管形ＬＥＤランプ１を用いている。 The straight tube LED lamp 1 is a straight tube LED lamp 1 according to the first embodiment, and is used as a light source for illumination of the illumination device 2. In the present embodiment, two straight tube LED lamps 1 are used.
　照明器具１００は、直管形ＬＥＤランプ１と電気的に接続され、かつ、当該直管形ＬＥＤランプ１を保持する一対のソケット１１０と、ソケット１１０が取り付けられる器具本体１２０とを備える。器具本体１２０は、例えばアルミ鋼板をプレス加工等することによって成型することができる。また、器具本体１２０の内面は、直管形ＬＥＤランプ１から発せられた光を所定方向（例えば、下方である）に反射させる反射面となっている。 The lighting fixture 100 includes a pair of sockets 110 that are electrically connected to the straight tube LED lamp 1 and that holds the straight tube LED lamp 1 and a fixture main body 120 to which the socket 110 is attached. The instrument body 120 can be formed by, for example, pressing an aluminum steel plate. Moreover, the inner surface of the instrument main body 120 is a reflecting surface that reflects light emitted from the straight tube LED lamp 1 in a predetermined direction (for example, downward).
　このように構成される照明器具１００は、例えば天井等に固定具を介して装着される。なお、照明器具１００には、直管形ＬＥＤランプ１の点灯を制御するための回路等が内蔵されていてもよい。また、直管形ＬＥＤランプ１を覆うようにカバー部材が設けられていてもよい。 The lighting fixture 100 configured in this way is mounted on a ceiling or the like via a fixture. The lighting fixture 100 may incorporate a circuit for controlling the lighting of the straight tube LED lamp 1 or the like. Further, a cover member may be provided so as to cover the straight tube type LED lamp 1.
　（その他）
　以上、本発明に係るランプ及び照明装置について、実施の形態に基づいて説明したが、本発明は、上記の実施の形態に限定されるものではない。 (Other)
As described above, the lamp and the illumination device according to the present invention have been described based on the embodiments, but the present invention is not limited to the above-described embodiments.
　例えば、上記実施の形態では、口金４０と基台３０との間に配置されたケースは、点灯回路７０を収容する回路ケース６０として例示したが、回路素子及び配線とは異なる部材を収容するケースであってもよい。 For example, in the above embodiment, the case disposed between the base 40 and the base 30 is exemplified as the circuit case 60 that accommodates the lighting circuit 70, but the case that accommodates a member different from the circuit element and the wiring. It may be.
　また、上記実施の形態では、基台３０の背面に配置された放熱構造は、透光性カバー２０と基台３０とで構成される長尺状筐体の長手方向に延在した放熱フィン３２が複数隣接配置された構造であるが、当該放熱構造はこれに限られない。本発明の直管形ＬＥＤランプの放熱構造は、図８Ａまたは図８Ｂに表された放熱構造であってもよい。 Moreover, in the said embodiment, the heat radiating structure arrange | positioned at the back surface of the base 30 is the radiation fin 32 extended in the longitudinal direction of the elongate housing | casing comprised with the translucent cover 20 and the base 30. FIG. However, the heat dissipation structure is not limited to this. The heat dissipation structure of the straight tube LED lamp of the present invention may be the heat dissipation structure shown in FIG. 8A or 8B.
　図８Ａは、本発明に係る直管形ＬＥＤランプの放熱構造の第１の変形例を示す基台背面図であり、図８Ｂは、本発明に係る直管形ＬＥＤランプの放熱構造の第２の変形例を示す基台背面図である。図８Ａ及び図８Ｂは、それぞれ、基台３３及び基台３４の背面における、放熱構造を構成する放熱フィンのレイアウトを表している。 FIG. 8A is a rear view of the base showing a first modification of the heat dissipation structure of the straight tube LED lamp according to the present invention, and FIG. 8B is a second view of the heat dissipation structure of the straight tube LED lamp according to the present invention. It is a base rear view which shows the modification of this. FIG. 8A and FIG. 8B show the layout of the heat dissipating fins constituting the heat dissipating structure on the back surfaces of the base 33 and the base 34, respectively.
　図８Ａに示された放熱構造は、実施の形態１に係る基台３０の放熱フィン３２からなる放熱構造に対して、基台の長手方向（Ｙ軸方向）に延伸した放熱フィンが所定の間隔で分断された構造となっている。上記構造により、放熱フィンの分断部分から外部冷気を放熱フィンに流入させることができるので、効果的な空気の対流がなされ、より効率的な排熱が実現される。 The heat dissipation structure shown in FIG. 8A is different from the heat dissipation structure including the heat dissipation fins 32 of the base 30 according to Embodiment 1 in that the heatsink fins extending in the longitudinal direction of the base (Y-axis direction) have a predetermined interval. The structure is divided by. According to the above structure, external cold air can be flowed into the radiating fin from the divided portion of the radiating fin, so that effective air convection is performed and more efficient exhaust heat is realized.
　また、図８Ｂに示された放熱構造は、実施の形態１に係る基台３０背面の放熱構造が基台の長手方向（Ｙ軸方向）に延伸した複数の放熱フィン３２で構成されているのに対して、基台の短手方向（Ｘ軸方向）に延伸した複数の放熱フィンで構成されている。しかも、複数の放熱フィンのそれぞれは、所定の間隔で分断された構造となっている。上記構造により、基台の短手方向から外部冷気を放熱フィンに流入させることができ、さらに、放熱フィンの分断部分を介して、外部冷気を放熱フィンに流入させることができる。よって、効果的な空気の対流がなされ、より効率的な排熱が実現される。なお、図８Ｂに示された放熱構造において、基台の短手方向（Ｘ軸方向）に延伸した複数の放熱フィンが分断されていない構造であってもよい。 In addition, the heat dissipation structure shown in FIG. 8B is configured by a plurality of heat dissipation fins 32 in which the heat dissipation structure on the back surface of the base 30 according to Embodiment 1 extends in the longitudinal direction (Y-axis direction) of the base. On the other hand, it is composed of a plurality of radiating fins extending in the short direction of the base (X-axis direction). In addition, each of the plurality of radiating fins has a structure that is divided at a predetermined interval. With the above structure, the external cold air can flow into the heat radiating fins from the short side of the base, and the external cold air can flow into the heat radiating fins through the divided portions of the heat radiating fins. Therefore, effective air convection is performed, and more efficient exhaust heat is realized. Note that the heat dissipation structure shown in FIG. 8B may be a structure in which a plurality of heat dissipation fins extending in the short direction (X-axis direction) of the base are not divided.
　また、例えば、上記の実施の形態では、口金４０または口金５０のみの片側から筐体内の全ＬＥＤに給電を行う片側給電方式を採用したが、両側の口金の両方とも受電ピンとするＧ１３口金及びＬ形口金（Ｌ字状に屈曲した平板状の受電ピンを持つ口金）等の両側給電方式としても構わない。この場合、一方側の受電ピンも他方側の受電ピンも１ピンとするような構成でも構わないし、一方側の受電ピンも他方側の受電ピンも一対の受電ピンとして両側から受電するような構成でも構わない。また、一対の受電ピンやアースピンは、棒状金属に限らず、平板金属等によって構成されても構わない。 Further, for example, in the above-described embodiment, a single-side power feeding method that feeds power to all the LEDs in the housing from only one side of the base 40 or the base 50 is adopted, but both the bases on both sides use the G13 base and L A double-sided power feeding method such as a shape base (a base having a flat power receiving pin bent in an L shape) may be used. In this case, the power receiving pin on one side and the power receiving pin on the other side may be configured as one pin, or the power receiving pin on one side and the power receiving pin on the other side may be configured to receive power from both sides as a pair of power receiving pins. I do not care. In addition, the pair of power receiving pins and the ground pins are not limited to the rod-shaped metal, and may be configured by a flat metal or the like.
　上記給電方式の態様から、本発明に係る直管形ＬＥＤランプでは、例えば、以下のバリエーションが挙げられる。すなわち、一方側がＬ形口金及び他方側がアースピンを持つ口金で構成された片側給電方式、両側がＬ形口金で構成された両側給電方式、両側がＬ形口金で構成された片側給電方式、Ｇ１３口金で構成された両側給電方式、ならびに、Ｇ１３口金で構成された片側給電方式等である。 From the aspect of the power feeding method described above, for example, the straight tube LED lamp according to the present invention includes the following variations. That is, a one-sided power feeding method in which one side is composed of an L-shaped base and a base having a ground pin on the other side, a two-sided power feeding method in which both sides are composed of an L-shaped base, a one-sided power feeding method in which both sides are composed of an L-shaped base, and a G13 base And a one-sided power feeding system composed of a G13 base.
　また、上記の実施の形態において、ＬＥＤモジュール１０として、パッケージ化されたＬＥＤ素子８８を用いたＳＭＤ型のＬＥＤモジュールとしたが、これに限らない。例えば、実装基板８２上に複数のＬＥＤチップが直接実装され、複数のＬＥＤチップを蛍光体含有樹脂によって一括封止した構成であるＣＯＢ（Ｃｈｉｐ　Ｏｎ　Ｂｏａｒｄ）型のＬＥＤモジュールとしても構わない。 In the above embodiment, the LED module 10 is an SMD type LED module using the packaged LED element 88, but is not limited thereto. For example, a COB (Chip On Board) type LED module having a configuration in which a plurality of LED chips are directly mounted on the mounting substrate 82 and the plurality of LED chips are collectively sealed with a phosphor-containing resin may be used.
　また、上記の実施の形態において、ＬＥＤモジュール１０（ＬＥＤ素子８８）は、青色ＬＥＤチップと黄色蛍光体とによって白色光を放出するように構成したが、これに限られない。例えば、赤色蛍光体及び緑色蛍光体を含有する蛍光体含有樹脂を用いて、これと青色ＬＥＤチップと組み合わせることによりに白色光を放出するように構成しても構わない。また、青色以外の色を発光するＬＥＤチップを用いてもよく、例えば、青色ＬＥＤチップが放出する青色光よりも短波長である紫外光を放出する紫外ＬＥＤチップを用いて、主に紫外光により励起されて青色光、赤色光及び緑色光を放出する青色蛍光体粒子、緑色蛍光体粒子及び赤色蛍光体粒子とによって白色光を放出するように構成してもよい。 In the above embodiment, the LED module 10 (LED element 88) is configured to emit white light by the blue LED chip and the yellow phosphor, but is not limited thereto. For example, a phosphor-containing resin containing a red phosphor and a green phosphor may be used and combined with this and a blue LED chip to emit white light. Moreover, you may use the LED chip which light-emits colors other than blue, for example, using the ultraviolet LED chip which emits the ultraviolet light which is shorter wavelength than the blue light which a blue LED chip emits, mainly by ultraviolet light You may comprise so that white light may be emitted by the blue phosphor particles, green phosphor particles, and red phosphor particles that are excited to emit blue light, red light, and green light.
　また、上記の実施の形態において、発光素子としてＬＥＤを例示したが、半導体レーザ等の半導体発光素子、または、有機ＥＬ（Ｅｌｅｃｔｒｏ　Ｌｕｍｉｎｅｓｃｅｎｃｅ）や無機ＥＬ等のＥＬ素子、その他の固体発光素子を用いてもよい。 In the above embodiment, the LED is exemplified as the light emitting element. However, a semiconductor light emitting element such as a semiconductor laser, an EL element such as an organic EL (Electro Luminescence) or an inorganic EL, or other solid light emitting element is used. Also good.
　また、本発明は、透光性カバー２０に見られる切り欠き（主開口２１）のない円筒状の透光性カバーと、当該透光性カバー内に配置される基台とで構成された長尺状筐体を備えた直管形ＬＥＤランプの場合にも適用可能である。つまり、本態様における回路ケースは、円筒状の透光性カバーを端部で覆う口金と基台との間に配置され、当該回路ケースの少なくとも一部は、ＬＥＤモジュールとともに、透光性カバーで覆われる。この構造の場合でも、直管形ＬＥＤランプ端部の輝度低下が抑制される。 The present invention also includes a cylindrical translucent cover without a notch (main opening 21) seen in the translucent cover 20 and a base that is arranged in the translucent cover. The present invention can also be applied to a straight tube type LED lamp provided with a long casing. That is, the circuit case in this aspect is disposed between the base and the base that covers the cylindrical translucent cover at the end, and at least a part of the circuit case is a translucent cover together with the LED module. Covered. Even in the case of this structure, a decrease in luminance at the end of the straight tube LED lamp is suppressed.
　その他、各実施の形態に対して当業者が思いつく各種変形を施して得られる形態や、本発明の趣旨を逸脱しない範囲で各実施の形態における構成要素および機能を任意に組み合わせることで実現される形態も本発明に含まれる。 In addition, it is realized by arbitrarily combining the components and functions in each embodiment without departing from the scope of the present invention, or a form obtained by subjecting each embodiment to various modifications conceived by those skilled in the art. Forms are also included in the present invention.
　また、上記実施形態において、基台の溝と嵌合する透光性カバーの端部の端面（周方向の端面）は、長手方向に連続しており、１つの平面を形成し、透光性カバーの端部は、長手方向に連続して基台の溝と嵌合する。ところで、樹脂製の透光性カバーには歪み（成形時）が内在するので、基台に透光性カバーをスライド挿入させたとき、基台からの応力によって透光性カバーが割れたり欠けたりする。特に、１１０形のように透光性カバーの長手方向の長さが長い場合は、樹脂成形時に歪みが多く内在するため、この問題は顕著となる。また、透光性カバーの長尺方向からみたときの形状が半円を超えており、透光性カバーの主開口が、長尺方向からみたとき、透光性カバーの中心軸を中心として１８０°より小さい範囲に連続して形成されている場合には、特に透光性カバーの歪みが多い。これに対し、基台の溝と透光性カバーの端部との嵌合部での接触面積を小さくすることで、透光性カバーが基台から受ける応力を緩和することができる。これを実現する構成としては、透光性カバーの端部が長手方向に断続して爪状に形成され、透光性カバーの周方向に高さが変化する凸凹が透光性カバーの端部の端面に形成される構成が考えられる。この構成の場合、透光性カバーの端部の端面の凸部（爪部）が基台の溝と嵌合して基台の溝の表面と接するが、透光性カバーの端部の端面の凹部は基台の溝と嵌合せず基台の溝の表面と接しない。また、別の構成として、基台の溝の幅が長手方向で一定であり、透光性カバーの端部の厚みが長手方向で変化する構成が考えられる。この構成の場合、透光性カバーの端部の厚肉部が基台の溝と嵌合して基台の溝の表面と接するが、透光性カバーの端部の薄肉部は基台の溝と嵌合（接触）せず、端部の薄肉部と基台の溝との間には隙間が形成される。また、さらに別の構成として、透光性カバーの端部の厚みが長手方向で一定であり、基台の溝の幅（開口幅）が長手方向で変化する構成が考えられる。この構成の場合、基台の溝の幅の狭い部分が透光性カバーの端部と嵌合して透光性カバーの端部と接するが、基台の溝の幅の広い部分は透光性カバーの端部と嵌合せず、基台の溝の幅の広い部分と透光性カバーの端部との間には隙間が形成される。 Moreover, in the said embodiment, the end surface (circumferential end surface) of the edge part of the translucent cover fitted to the groove | channel of a base is continuous in a longitudinal direction, forms one plane, and translucency The end of the cover is fitted in the groove of the base continuously in the longitudinal direction. By the way, since the resin-made translucent cover has distortion (during molding), when the translucent cover is slid into the base, the translucent cover is cracked or chipped due to stress from the base. To do. In particular, when the length of the translucent cover in the longitudinal direction is long as in the case of type 110, this problem becomes significant because many distortions are inherent during resin molding. Further, the shape of the translucent cover when viewed from the long direction exceeds a semicircle, and the main opening of the translucent cover is 180 around the central axis of the translucent cover when viewed from the long direction. When it is continuously formed in a range smaller than 0 °, the translucent cover is particularly distorted. On the other hand, the stress which a translucent cover receives from a base can be relieve | moderated by making small the contact area in the fitting part of the groove | channel of a base and the edge part of a translucent cover. As a configuration for realizing this, the end of the translucent cover is intermittently formed in a claw shape in the longitudinal direction, and the unevenness whose height changes in the circumferential direction of the translucent cover is the end of the translucent cover. The structure formed in the end surface of this can be considered. In this configuration, the convex portion (claw portion) of the end face of the end portion of the translucent cover fits into the groove of the base and contacts the surface of the base groove, but the end face of the end of the translucent cover The recess does not fit into the groove of the base and does not contact the surface of the groove of the base. As another configuration, a configuration in which the width of the groove of the base is constant in the longitudinal direction and the thickness of the end portion of the translucent cover varies in the longitudinal direction is conceivable. In this configuration, the thick part at the end of the translucent cover fits into the groove of the base and contacts the surface of the groove of the base, but the thin part at the end of the translucent cover A gap is formed between the thin part at the end and the groove on the base without fitting (contacting) with the groove. As another configuration, a configuration in which the thickness of the end portion of the translucent cover is constant in the longitudinal direction and the width (opening width) of the groove of the base varies in the longitudinal direction can be considered. In this configuration, the narrow part of the groove of the base is fitted to the end of the translucent cover and comes into contact with the end of the translucent cover, but the wide part of the base is wide. A gap is formed between the wide portion of the groove of the base and the end of the translucent cover without being fitted to the end of the transparent cover.
　１、３　　直管形ＬＥＤランプ
　２　　照明装置
　１０　ＬＥＤモジュール
　２０　　透光性カバー
　２１　　主開口
　３０、３３、３４　　基台
　３１　　載置部
　３２　　放熱フィン
　４０、５０　　口金
　４１　　給電ピン
　４２、５２　　ネジ穴
　４３、５３　　ネジ
　５１　　非給電ピン
　６０、６１、６２　　回路ケース
　７０　　点灯回路
　７１　　回路基板
　７２　　回路素子群
　８２　　実装基板
　８４　　配線
　８６　　電極端子
　８８　　ＬＥＤ素子
　１００　　照明器具
　１１０　　ソケット
　１２０　　器具本体 DESCRIPTION OF SYMBOLS 1, 3 Straight tube | pipe type LED lamp 2 Illuminating device 10 LED module 20 Translucent cover 21 Main opening 30, 33, 34 Base 31 Mounting part 32 Radiation fin 40, 50 Base 41 Feeding pin 42, 52 Screw hole 43, 53 Screw 51 Non-feeding pin 60, 61, 62 Circuit case 70 Lighting circuit 71 Circuit board 72 Circuit element group 82 Mounting board 84 Wiring 86 Electrode terminal 88 LED element 100 Lighting fixture 110 Socket 120 Instrument body

Claims (8)

  1. 　発光素子と表面に前記発光素子が設けられた基板とを有する発光モジュールと、
    　前記基板の表面を覆う長尺状の透光性カバーと、
    　表面に前記発光モジュールが設けられた長尺状の基台と、
    　前記透光性カバーの長手方向における端部に配置され、前記透光性カバーに覆われた、前記発光モジュールを点灯させるための部材を収容するケースと、
    　前記透光性カバーの長手方向における端部に設けられた口金とを備え、
    　前記ケースは、前記発光モジュールから出射した光を前記透光性カバーの外側へ向けて出射させるための、前記基台の表面から傾斜した反射面を有する
    　照明用光源。     A light emitting module having a light emitting element and a substrate provided with the light emitting element on the surface;
    An elongated translucent cover covering the surface of the substrate;
    An elongated base on which the light emitting module is provided on the surface;
    A case that is disposed at an end portion in the longitudinal direction of the translucent cover and that is covered with the translucent cover and that houses a member for lighting the light emitting module;
    A base provided at an end in the longitudinal direction of the translucent cover;
    The light source for illumination, wherein the case has a reflecting surface inclined from the surface of the base for emitting the light emitted from the light emitting module toward the outside of the translucent cover.
  2. 　前記反射面と前記透光性カバーの内面との前記基台の表面に垂直な方向における距離は、前記透光性カバーの長手方向中央に近づくほど大きい
    　請求項１に記載の照明用光源。     The light source for illumination according to claim 1, wherein a distance between the reflecting surface and the inner surface of the translucent cover in a direction perpendicular to the surface of the base is larger as approaching the center in the longitudinal direction of the translucent cover.
  3. 　前記ケースの前記反射面は、凸形状を有する曲面である
    　請求項２に記載の照明用光源。     The illumination light source according to claim 2, wherein the reflection surface of the case is a curved surface having a convex shape.
  4. 　前記ケースに収容される前記部材は、外部電源から供給される電力を所定の直流電力に変換する回路部材である
    　請求項１に記載の照明用光源。     The light source for illumination according to claim 1, wherein the member housed in the case is a circuit member that converts electric power supplied from an external power source into predetermined DC power.
  5. 　前記ケースは、絶縁材料で構成されている
    　請求項１に記載の照明用光源。     The illumination light source according to claim 1, wherein the case is made of an insulating material.
  6. 　前記ケースは、前記透光性カバーの長手方向における両端部に配置されている
    　請求項１に記載の照明用光源。     The illumination light source according to claim 1, wherein the case is disposed at both ends of the translucent cover in a longitudinal direction.
  7. 　前記透光性カバーは、長尺円筒の一部を長尺方向に沿って切り欠いた主開口を有する切り欠き円筒部材であり、
    　前記基台は、前記主開口を塞ぐように前記透光性カバーを保持する
    　請求項１～６のいずれか１項に記載の照明用光源。     The translucent cover is a cutout cylindrical member having a main opening in which a part of the long cylinder is cut out along the lengthwise direction,
    The illumination light source according to any one of claims 1 to 6, wherein the base holds the translucent cover so as to close the main opening.
  8. 　請求項１～７のいずれか１項に記載の照明用光源を備える
    　照明装置。     An illumination device comprising the illumination light source according to any one of claims 1 to 7.
PCT/JP2013/005023 2012-09-26 2013-08-26 Light source for lighting, and lighting apparatus WO2014049952A1 (en)

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