WO2017150040A1 - Dispositif d'éclairage et son procédé de fabrication - Google Patents

Dispositif d'éclairage et son procédé de fabrication Download PDF

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Publication number
WO2017150040A1
WO2017150040A1 PCT/JP2017/003275 JP2017003275W WO2017150040A1 WO 2017150040 A1 WO2017150040 A1 WO 2017150040A1 JP 2017003275 W JP2017003275 W JP 2017003275W WO 2017150040 A1 WO2017150040 A1 WO 2017150040A1
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WO
WIPO (PCT)
Prior art keywords
fin
protrusion
light source
base portion
hole
Prior art date
Application number
PCT/JP2017/003275
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English (en)
Japanese (ja)
Inventor
梢吾 供田
Original Assignee
パナソニックＩｐマネジメント株式会社
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Ｉｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to JP2018502602A priority Critical patent/JP6611063B2/ja
Publication of WO2017150040A1 publication Critical patent/WO2017150040A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • 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
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
    • 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
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof

Definitions

  • the present invention relates to a lighting fixture including fins and a method for manufacturing the same.
  • a conventional lighting device such as a downlight includes a light source such as an LED (Light Emitting Diode) and a heat sink that dissipates heat generated by the light source (see, for example, Patent Document 1).
  • the heat sink described in Patent Document 1 includes a base member and a fin member press-fitted into the opening of the base member.
  • the conventional heat sink has a problem that the thermal conductivity is lowered due to the dimensional tolerance between the fin member and the base member.
  • the fin member when the outer dimension of the fin member is larger than the inner dimension of the opening of the base member, the fin member may not be pressed into the opening. Further, when the outer dimension of the fin member is smaller than the inner dimension of the opening of the base member, the fin member press-fitted into the opening may be detached. In either case, the contact between the fin member and the base member becomes insufficient, and the thermal conductivity decreases.
  • an object of the present invention is to provide a lighting fixture with improved thermal conductivity and a method for manufacturing the same.
  • a lighting fixture includes a light source and a fixture main body to which the light source is attached.
  • the fixture main body includes a first surface to which the light source is attached; A base portion having a second surface opposite to the surface, and a fin fixed to the second surface, the base portion having a protrusion protruding from the second surface, A hole is provided, and the fin is fixed to the base portion in a state where the protrusion is inserted into the hole and the protrusion is plastically deformed.
  • a method for manufacturing a lighting fixture wherein a first surface to which a light source is attached, a base portion having a second surface opposite to the first surface, and the second surface are fixed.
  • a method of manufacturing a lighting fixture comprising a fin, wherein a step of forming a protrusion on the second surface, a step of forming a hole in the fin, and inserting the protrusion into the hole, A step of bringing the fin into contact with each other, and a step of fixing the fin to the base portion by plastically deforming the protrusion.
  • FIG. 1 is a schematic perspective view of a lighting apparatus according to an embodiment.
  • FIG. 2 is a cross-sectional view of the lighting fixture according to the embodiment.
  • FIG. 3 is an exploded perspective view showing a part of the lighting apparatus according to the embodiment.
  • FIG. 4 is a schematic perspective view of the instrument body according to the embodiment.
  • FIG. 5 is a plan view showing an outer bottom surface of the instrument body according to the embodiment.
  • 6 is a cross-sectional perspective view of the instrument body according to the embodiment taken along the line VI-VI in FIG. 7 is a cross-sectional view of the connection portion between the fin and the base portion according to the embodiment taken along the line VII-VII in FIG.
  • FIG. 8 is a flowchart showing a method of manufacturing the lighting fixture according to the embodiment.
  • FIG. 8 is a flowchart showing a method of manufacturing the lighting fixture according to the embodiment.
  • FIG. 9 is a perspective view showing a positioning step between the fin and the base portion in the manufacturing method of the lighting fixture according to the embodiment.
  • FIG. 10 is sectional drawing which shows the plastic deformation process of the protrusion in the manufacturing method of the lighting fixture which concerns on embodiment.
  • FIG. 11 is a plan view of the instrument main body according to the first modification.
  • FIG. 12 is a cross-sectional view of the connection portion between the fin and the base portion according to the first modification.
  • FIG. 13 is an overview perspective view of the base portion according to the first modification.
  • FIG. 14 is a schematic perspective view of the base portion according to the second modification.
  • FIG. 1 is a perspective view of a lighting fixture 1 according to the present embodiment.
  • FIG. 2 is a cross-sectional view of the lighting fixture 1 according to the present embodiment. Specifically, FIG. 2 shows a cross section passing through the optical axis J of the luminaire 1.
  • the direction parallel to the optical axis J is the z-axis direction
  • the two directions perpendicular to the optical axis J and perpendicular to each other are the x-axis direction and the y-axis direction.
  • the z-axis direction is, for example, the vertical direction.
  • the luminaire 1 is an example of an embedded luminaire such as a downlight.
  • the luminaire 1 is embedded in a mounting hole provided in a ceiling of a building and irradiates light downward (such as a floor).
  • FIG. 1 has shown the lighting fixture 1 when it looks up from diagonally downward.
  • the lighting fixture 1 includes a fixture main body 10, an optical member 60, a frame body 70, and an attachment spring 80. Furthermore, as shown in FIG. 2, the lighting fixture 1 includes a light source 20, a mounting member 30, a connecting member 40, and a reflecting member 50.
  • each component (part) of the lighting fixture 1 will be described in detail with reference to FIGS. 1 and 2.
  • the fixing members such as the latching
  • the fixture body 10 is a main body of the lighting fixture 1 and is a metal member to which the light source 20 is attached.
  • the instrument body 10 also functions as a heat sink that dissipates heat generated by the light source 20.
  • the instrument main body 10 is formed from a metal material having a high thermal conductivity such as aluminum.
  • the instrument main body 10 includes a base portion 11 and a plurality of fins 12 as shown in FIGS. 1 and 2.
  • the plurality of fins 12 are fixed to the base portion 11 by plastic deformation of a part of the base portion 11. Details of the base portion 11 and the plurality of fins 12 will be described later.
  • the light source 20 is an example of a light source in the lighting fixture 1 and is a light emitting unit that emits light of a predetermined color (wavelength) such as white.
  • the light source 20 is attached to the base portion 11 of the instrument body 10. In the present embodiment, as shown in FIG. 2, the light source 20 is fixed to the attachment surface 110 a of the bottom surface portion 110 of the base portion 11 by the attachment member 30 and the connection member 40.
  • the light source 20 is an LED module including a substrate 21 and a plurality of LEDs 22.
  • the light source 20 is a so-called COB (Chip On Board) module in which a bare chip (LED 22) is directly mounted on the substrate 21.
  • COB Chip On Board
  • the substrate 21 for example, a ceramic substrate, a resin substrate, a metal base substrate, or the like can be used.
  • the planar view shape of the substrate 21 is, for example, a rectangle, but may be a polygon such as a hexagon or an octagon, or a circle.
  • Metal wiring (not shown) is formed on the substrate 21, and the plurality of LEDs 22 are electrically connected.
  • the LED 22 is an example of a light emitting element, and is a semiconductor light emitting element that emits light with a predetermined power.
  • the LED 22 is, for example, a bare chip that emits monochromatic visible light.
  • the LED 22 is a blue light emitting LED chip that emits blue light when energized.
  • the plurality of LEDs 22 are arranged in a plurality of rows or a matrix on the main surface of the substrate 21.
  • the plurality of LEDs 22 are collectively sealed by a sealing member (not shown).
  • the plurality of LEDs 22 may be collectively sealed for each element row, or all the LEDs 22 on the substrate 21 may be collectively sealed.
  • the sealing member includes, for example, a translucent resin material such as silicone resin as a main component, and includes a wavelength conversion material that converts the wavelength of light from the LED 22.
  • the wavelength conversion material is, for example, phosphor particles, and specifically, yellow phosphor particles.
  • the light source 20 emits white light by mixing the blue light emitted from the LED 22 and the yellow light emitted when the yellow phosphor particles are excited by the blue light.
  • the sealing member may contain a light diffusing material (light scattering particles) such as silica (SiO 2 ).
  • the light source 20 may be an SMD (Surface Mounted Device) type module.
  • a package type LED element (SMD type LED element) may be mounted on the substrate 21.
  • the package type LED element includes, for example, a resin container having a recess (cavity), an LED chip (LED 22) mounted in the recess, and a sealing member (phosphor-containing resin) sealed in the recess.
  • the attachment member 30 is a member for attaching the light source 20 to the attachment surface 110 a of the base portion 11.
  • the attachment member 30 functions as a frame for the light source 20.
  • the attachment member 30 regulates the position of the light source 20 in the lateral direction (directions orthogonal to the optical axis J (x-axis direction and y-axis direction)).
  • FIG. 3 is an exploded perspective view showing a part of the lighting fixture 1 according to the present embodiment. Specifically, FIG. 3 shows the instrument body 10, the light source 20, the attachment member 30, and the connection member 40.
  • the restricting portion 31 is a rectangular frame portion having an opening 33 at the center.
  • the opening 33 has a shape corresponding to the substrate 21 of the light source 20, and the light source 20 is disposed in the opening 33.
  • the claw portion 32 is a claw-shaped portion for supporting the reflecting member 50.
  • the two claw portions 32 are erected from the restriction portion 31 in the direction along the optical axis J.
  • the mounting member 30 is disposed on the mounting surface 110 a of the bottom surface portion 110 and is fixed to the bottom surface portion 110 by the connection member 40 and the screw 45. Specifically, as shown in FIG. 3, two screw holes 34 and two screw holes 113 are provided in the restriction portion 31 and the bottom surface portion 110, respectively.
  • the attachment member 30 is fixed to the bottom surface portion 110 by inserting the screw 45 into the screw hole 34 of the restriction portion 31 and screwing into the screw hole 113 of the bottom surface portion 110.
  • the mounting member 30 is integrally formed using a resin material such as polybutylene terephthalate (PBT) or ABS (acrylonitrile / butadiene / styrene).
  • PBT polybutylene terephthalate
  • ABS acrylonitrile / butadiene / styrene
  • connection member 40 is a member to which an electric wire (not shown) that supplies current to the light source 20 is connected.
  • the luminaire 1 includes two connection members 40.
  • One of the two connecting members 40 is connected to a high potential side electric wire, and the other is connected to a low potential side electric wire.
  • connection member 40 includes a main body 41 and an electrode 42 as shown in FIG.
  • the main body 41 is a resin casing for supporting the electric wires.
  • a screw hole 43 is provided in the main body 41 of the connection member 40.
  • the screw 45 is inserted into the screw hole 43 and screwed into the screw hole 34 of the restricting portion 31 and the screw hole 113 of the bottom surface portion 110, so that the connecting member 40 sandwiches the mounting member 30 and the bottom surface. It is fixed to the part 110.
  • connection member 40 has a function of regulating the position of the light source 20 in the direction along the optical axis J (z-axis direction).
  • the electrode 42 is electrically connected to an electric wire supported by the main body 41 and is electrically connected to an electrode terminal provided on the substrate 21 of the light source 20.
  • the electrode 42 is formed in the shape of a leaf spring, and presses the electrode terminal toward the mounting surface 110a by its urging force. Thereby, the electrode 42 and the electrode terminal of the board
  • connection member 40 is formed by insert molding using, for example, a conductive material that constitutes the electrode 42 and a resin material that constitutes the main body 41.
  • the main body 41 is molded using a resin material such as PBT or ABS, for example.
  • the electrode 42 is formed using a conductive material such as copper.
  • the reflecting member 50 is a member that controls light distribution from the light source 20.
  • the reflecting member 50 reflects the light from the light source 20 toward the optical member 60.
  • the reflecting member 50 is a substantially cylindrical body provided with an opening through which the optical axis J passes substantially through the center.
  • the inner diameter of the reflecting member 50 gradually increases from the end on the side where the light from the light source 20 is incident (the positive side in the z-axis direction) toward the end where the light is emitted. It is formed to become.
  • the inner surface of the reflecting member 50 is a reflecting surface that reflects light from the light source 20.
  • the reflecting member 50 is formed using a hard white resin material such as PBT, for example. At this time, a metal reflecting film such as aluminum may be provided on the inner surface of the reflecting member 50.
  • the optical member 60 is a translucent member into which light from the reflecting member 50 is incident. As shown in FIG. 2, the optical member 60 is arranged so as to cover the opening on the light emitting side (the negative side in the z-axis direction) of the reflecting member 50.
  • the optical member 60 may have a function of controlling and emitting the light distribution of the light that has passed through the reflecting member 50.
  • the optical member 60 is a Fresnel lens.
  • the optical member 60 is formed from a material having translucency.
  • the optical member 60 is formed from a transparent resin material such as acrylic (PMMA) or polycarbonate (PC).
  • the optical member 60 may be formed from a transparent glass material.
  • the optical member 60 may have a light diffusion (scattering) structure.
  • the optical member 60 may be formed using a resin material in which a diffusing material is dispersed, or an unevenness or a dot pattern may be formed on the surface.
  • the frame body 70 is a cylindrical member that allows the light emitted from the optical member 60 to pass therethrough.
  • the frame body 70 includes an auxiliary reflection member 71, a frame main body 72, and a collar 73.
  • the auxiliary reflecting member 71 is a cylindrical member arranged inside the cylindrical frame main body 72.
  • the auxiliary reflecting member 71 has an auxiliary reflecting surface 71 a on the inner side, and has a function of controlling the light distribution of the lighting fixture 1.
  • the auxiliary reflecting member 71 is formed of a thin metal plate such as aluminum.
  • the frame main body 72 is a main body of the cylindrical frame 70.
  • the frame main body 72 has substantially the same outer diameter as the base portion 11 of the instrument main body 10.
  • the frame main body 72 and the base part 11 are fixed by screws (not shown).
  • the frame main body 72 is formed using a metal material such as aluminum, for example.
  • ⁇ 73 is a part of the frame main body 72, and is a portion extending from the end of the frame main body 72 on the light emitting side (z-axis direction negative side) toward the outside in the radial direction.
  • the collar 73 is provided in an annular shape. For example, when the lighting fixture 1 is attached to the ceiling, the flange 73 contacts the lower surface of the ceiling plate.
  • the attachment spring 80 is used for attaching the luminaire 1 to an attachment portion such as a ceiling. Specifically, the lighting fixture 1 can be attached by holding the ceiling plate between the attachment spring 80 and the flange 73 of the frame body 72 using the restoring force of the attachment spring 80.
  • the mounting spring 80 is formed into a long and narrow plate shape by pressing or the like using a metal material such as iron.
  • the lighting fixture 1 includes two attachment springs 80, but the number and positions of the attachment springs 80 are not limited thereto.
  • FIG. 4 is a schematic perspective view of the instrument body 10 according to the present embodiment.
  • FIG. 5 is a plan view showing the outer bottom surface 110b of the instrument body 10 according to the present embodiment.
  • 6 is a cross-sectional perspective view of the instrument body 10 according to the present embodiment taken along the line VI-VI in FIG.
  • FIG. 7 is a cross-sectional view of the connection portion between the fin 12 and the base portion 11 according to the present embodiment taken along the line VII-VII in FIG.
  • the appliance main body 10 is not formed integrally (as one component) such as aluminum die casting, but is formed by connecting a plurality of components. Specifically, the protrusion 112 provided on the base part 11 is plastically deformed, so that the base part 11 and the fins 12 which are separate parts are connected and fixed. More specifically, the fin 12 is fixed to the base portion 11 in a state where the protrusion 112 is inserted into the hole 122 provided in the fin 12 and the protrusion 112 is plastically deformed.
  • the base portion 11 is integrally formed (as one part) by forging a cylindrical member made of aluminum, for example.
  • Each of the plurality of fins 12 is formed integrally (as one component) by, for example, pressing a sheet metal made of aluminum.
  • each of the base portion 11 and the fins 12 can be formed by forging or pressing. Moreover, since the thickness of each member can be made thin, weight reduction is realizable. Further, the base portion 11 is not provided with a draft angle. Thereby, workability can be improved.
  • Each of the base portion 11 and the fins 12 may be made of aluminum die casting.
  • the shape of the base part 11 is a cup shape as shown in FIGS. Thereby, the thickness of the bottom face part 110 can be reduced while securing the envelope volume of the base part 11. Therefore, the heat from the light source 20 can be efficiently conducted to the plurality of fins 12.
  • the base portion 11 has a bottom surface portion 110 and a cylindrical side surface portion 111.
  • the bottom surface portion 110 is a substantially circular plate-like portion to which the light source 20 is attached, as shown in FIGS.
  • the bottom surface portion 110 has an attachment surface (first surface) 110a to which the light source is attached and an outer bottom surface (second surface) 110b opposite to the attachment surface 110a.
  • the mounting surface 110a is a bottom surface inside the cup-shaped base portion 11, and has a substantially circular shape in plan view. As shown in FIG. 3, the mounting surface 110 a is provided with irregularities in a predetermined shape so that the mounting member 30 and the connection member 40 are arranged. For example, the attachment surface 110a is provided with a screw hole 113 into which the screw 45 is screwed.
  • the mounting surface 110a has a flat portion on which the substrate 21 of the light source 20 is placed. The flat portion of the mounting surface 110a and the substrate 21 are in surface contact.
  • the outer bottom surface 110b is an outer bottom surface of the cup-shaped base portion 11, and has a substantially circular shape in plan view.
  • the outer bottom surface 110b is a flat surface.
  • the outer bottom surface 110b is not provided with a recess.
  • a plurality of protrusions 112 are provided on the outer bottom surface 110b.
  • the plurality of protrusions 112 protrude from the outer bottom surface 110b of the bottom surface part 110 as shown in FIG.
  • Each of the plurality of protrusions 112 is in a plastically deformed state.
  • each of the plurality of protrusions 112 is formed by plastically deforming the tip of a substantially cylindrical portion protruding in the normal direction from the outer bottom surface 110b.
  • the protrusion 112 has a base part 112a and an enlarged diameter part 112b.
  • the base portion 112 a is a portion inserted into the hole 122 provided in the fin 12.
  • the shape of the base portion 112 a substantially matches the shape of the hole 122.
  • the base portion 112a is a substantially cylindrical portion protruding from the outer bottom surface 110b in the normal direction.
  • the enlarged diameter portion 112b is a portion provided at the tip of the protrusion 112 and is a portion extending in the radial direction.
  • the shape of the enlarged diameter portion 112b is a substantially circular plate shape.
  • the enlarged diameter portion 112b is a plastically deformed portion and presses the bottom portion 120 of the fin 12 toward the outer bottom surface 110b. That is, the fin 12 is fixed to the base portion 11 by sandwiching the bottom portion 120 of the fin 12 between the enlarged diameter portion 112 b of the protrusion 112 and the outer bottom surface 110 b of the bottom surface portion 110.
  • the plurality of protrusions 112 are provided radially about the optical axis J in plan view, as shown in FIG. Further, all of the plurality of protrusions 112 are in a plastically deformed state and are used for joining to the fins 12, but are not limited thereto. At least one of the plurality of protrusions 112 may be a protrusion that is not plastically deformed (specifically, the protrusion 112x (see FIG. 9)).
  • a fillet 114 having a circular arc shape is provided in an annular shape on the periphery of the bottom surface portion 110.
  • the side surface portion 111 is a portion erected from the periphery of the bottom surface portion 110. As shown in FIGS. 3 and 4, the side surface portion 111 has a flat and substantially cylindrical shape. In the present embodiment, unevenness is formed on the side surface portion 111. Specifically, as shown in FIGS. 4 and 5, the side surface portion 111 is provided with a convex portion 115 protruding outward in the radial direction (in a direction away from the optical axis J).
  • the convex portion 115 has a cylindrical curved surface having a smaller diameter than the side surface portion 111, and is smoothly continuous with the side surface portion 111.
  • a screw hole 116 is provided in the bottom surface portion 110 in the vicinity of the convex portion 115.
  • a screw (not shown) for fixing the frame body 70 and the base portion 11 is inserted into the screw hole 116.
  • two protrusions 115 and two screw holes 116 are provided, but the number and position of these are not limited thereto.
  • the side surface portion 111 is provided with a notch 117.
  • the notch 117 is a hole for drawing an electric wire (not shown) connected to the light source 20 to the outside.
  • the said electric wire is connected to the power supply part (lighting circuit) arrange
  • the fin 12 is a heat radiating fin for radiating heat from the light source 20.
  • the fin 12 is fixed to the outer bottom surface 110 b of the base portion 11.
  • a plurality of fins 12 are arranged radially about the optical axis J as shown in FIG. Specifically, the eight fins 12 are arranged at an equal angle (specifically, 45 degrees) around the optical axis J.
  • the plurality of fins 12 have the same shape and the same size. Specifically, the cross-sectional shape of each of the plurality of fins 12 is substantially U-shaped (or substantially U-shaped). As shown in FIGS. 4 and 5, each of the plurality of fins 12 includes a bottom portion 120 and two side wall portions 121. As shown in FIGS. 6 and 7, the bottom 120 is provided with a hole 122.
  • the bottom portion 120 is a portion that contacts the outer bottom surface 110 b of the base portion 11. Specifically, the bottom portion 120 is a long flat plate portion, and is in surface contact with the outer bottom surface 110b. Since the bottom part 120 and the bottom part 110 of the base part 11 are thermally coupled, the heat from the light source 20 is conducted from the bottom part 110 to the bottom part 120 of the fin 12.
  • the plan view shape of the bottom 120 is substantially rectangular as shown in FIG.
  • the length of the bottom portion 120 in the longitudinal direction is, for example, a length that is at least half of the radius of the bottom surface portion 110 of the base portion 11 in plan view.
  • the fin 12 is not provided in the central portion (portion passing through the optical axis J) of the bottom surface portion 110, but the present invention is not limited to this.
  • the two side wall parts 121 are erected from both ends of the bottom part 120 in the short direction.
  • the bottom portion 120 is a portion connecting the end portions of the two side wall portions 121.
  • the two side walls 121 have the same shape and the same size.
  • the side wall part 121 is a substantially rectangular plate part, for example.
  • the size of the side wall 121 may be appropriately changed according to required heat dissipation performance.
  • the hole 122 is a through hole that penetrates the bottom 120.
  • the hole 122 is, for example, a cylindrical straight hole.
  • the hole 122 has such a size that the protrusion 112x (see FIG. 9) before plastic deformation can be inserted.
  • the hole 122 is formed, for example, approximately 0.5 mm larger than the diameter of the protrusion 112x before plastic deformation.
  • two holes 122 are provided at both ends of the bottom 120 in the longitudinal direction.
  • the number and position of the holes 122 are not limited to this, and for example, only one hole 122 may be provided.
  • a chamfered portion 123 is provided at the end (upper end) of the side wall 121 opposite to the bottom 120.
  • the chamfered portion 123 has a shape in which the corners of the side wall portion 121 are cut off obliquely.
  • the chamfered portion 123 has a shape chamfered at 45 degrees.
  • the chamfered portion 123 may be formed with a round surface.
  • the side wall 121 is provided with an insertion hole 124.
  • the insertion hole 124 is a hole through which an insulation lock (binding band) that holds the wires drawn out of the instrument body 10 together is passed.
  • an insulation lock binding band
  • FIG. 8 is a flowchart showing a method for manufacturing the luminaire 1 according to the present embodiment. Here, in particular, a method for manufacturing the instrument body 10 will be described in detail.
  • a plurality of protrusions 112x are formed on the outer bottom surface 110b of the base portion 11 (S10).
  • the base 11 having a plurality of protrusions 112x provided on the outer bottom surface 110b is integrally formed by forging an aluminum cylindrical member.
  • the protrusion 112x is a protrusion before plastic deformation (see FIG. 9).
  • a hole 122 is formed in the fin 12 (S20). Specifically, by pressing a sheet metal made of aluminum, the fin 12 having a hole 122 provided in the bottom 120 and having a substantially U-shaped cross section is formed. In addition, after forming the fin 12 having a substantially U-shaped cross section, the hole 122 may be formed by additional machining.
  • the protrusion 112x is inserted into the hole 122 (S30). Thereby, the fin 12 is made to contact the outer bottom face 110b. That is, the positioning of the fin 12 with respect to the base portion 11 is performed.
  • FIG. 9 is a perspective view showing a positioning step (S30 in FIG. 8) between the fin 12 and the base portion 11 in the method for manufacturing the lighting fixture 1 according to the present embodiment.
  • FIG. 9 shows a state immediately before the five fins 12 are arranged at positions to be fixed and the protrusion 112x is inserted into the hole 122 of the sixth fin 12.
  • positions the fin 12 one by one is shown here, you may arrange
  • the protrusion 112x is a substantially columnar portion standing from the outer bottom surface 110b of the base portion 11.
  • the protrusion 112x has, for example, a diameter and a height of 3 mm to 4 mm, and a radius having a radius of 1 mm to 2 mm is provided at the root.
  • the dimension of the protrusion 112x is only an example, and is not limited to these.
  • the fin 12 is moved downward at a position where the two protrusions 112x aligned in the radial direction of the base portion 11 and the two holes 122 of the fin 12 overlap in a top view. .
  • the two protrusions 112x are inserted into the two holes 122. Since the size of the hole 122 and the size of the projection 112x are substantially the same, the movement of the fin 12 in the lateral direction is restricted.
  • the projection 112x is plastically deformed (S40). Thereby, the fin 12 and the base part 11 are fixed.
  • FIG. 10 is a cross-sectional view showing a plastic deformation step of the protrusion 112x in the method for manufacturing the lighting fixture 1 according to the present embodiment.
  • die 90 is pressed from the front-end
  • the projection 112x is plastically deformed to form the enlarged diameter portion 112b. Note that not only the protrusion 112x but also the periphery of the hole 122 of the bottom 120 of the fin 12 may be plastically deformed.
  • the fins 12 are joined and fixed to the base portion 11 by caulking. Specifically, the enlarged diameter portion 112 b formed by plastic deformation presses the bottom portion 120 of the fin 12 toward the outer bottom surface 110 b of the base portion 11. Thereby, detachment
  • the lower surface of the bottom portion 120 of the fin 12 contacts the outer bottom surface 110 b of the base portion 11, but also the side surface of the base portion 112 a contacts the wall surface of the hole 122 of the bottom portion 120. Further, the lower surface of the enlarged diameter portion 112 b is in contact with the upper surface of the bottom portion 120.
  • the contact area of the fin 12 and the base part 11 is large, the heat conduction from the base part 11 to the fin 12 can be performed efficiently.
  • the thermal conductivity can be increased.
  • joining of the fin 12 and the base part 11 is easy, and it is excellent in mass production.
  • the enlarged diameter portion 112b is close to the side wall portion 121.
  • the gap between the enlarged diameter portion 112b and the side wall portion 121 is, for example, 0.5 mm or less.
  • the enlarged diameter portion 112b may be in contact with the side wall portion 121.
  • the contact area between the fin 12 and the base portion 11 is increased, so that the thermal conductivity is further increased.
  • the enlarged diameter portion 112b is not formed so as to be recessed into the side wall portion 121. That is, the enlarged diameter portion 112b formed by plastic deformation is formed so as not to deform the side wall portion 121. Thereby, it can suppress that the heat dissipation performance of the fin 12 is impaired.
  • the present invention is not limited to this.
  • the protrusion 112x may be plastically deformed and fixed for each fin 12.
  • the lighting fixture 1 includes the light source 20 and the fixture main body 10 to which the light source 20 is attached.
  • the fixture main body 10 has the attachment surface 110a to which the light source 20 is attached and the attachment surface 110a.
  • a fin 12 fixed to the outer bottom surface 110b.
  • the base portion 11 is provided with a protrusion 112 protruding from the outer bottom surface 110b.
  • the fins 12 are fixed to the base portion 11 with the projections 112 inserted into the holes 122 and the projections 112 being plastically deformed.
  • the heat of the light source 20 emitted at the time of lighting is conducted to the fins 12 through the base portion 11 and dissipated to the outside. That is, the instrument body 10 not only holds the light source 20 but also functions as a heat sink.
  • the base part 11 and the fin 12 are not integrally formed as one component like aluminum die-casting. That is, the base part 11 and the fin 12 are formed as separate parts. For this reason, the shape, size, and number of the fins 12 can be appropriately changed so as to correspond to the heat dissipation performance required according to the output of the light source 20 and the like. Therefore, since the base part 11 can be shared between a plurality of different lighting fixtures, the manufacturing cost can be greatly reduced, and the fixture main body 10 as a heat sink excellent in customization can be provided. .
  • the outer bottom surface 110b is a flat surface.
  • the mounting surface 110a to which the light source 20 is attached the base 11 having the outer bottom surface 110b opposite to the mounting surface 110a, and the outer bottom surface 110b.
  • a method of manufacturing a lighting fixture 1 including a fixed fin 12, a step of forming a protrusion 112 x on the outer bottom surface 110 b, a step of forming a hole 122 in the fin 12, and inserting the protrusion 112 x into the hole 122.
  • the method includes a step of bringing the fin 12 into contact with the outer bottom surface 110b and a step of fixing the fin 12 to the base portion 11 by plastic deformation of the protrusion 112x.
  • Modification 1 the modification 1 of the lighting fixture 1 which concerns on embodiment is demonstrated.
  • the lighting fixture which concerns on this modification only the fixture main body is different compared with embodiment.
  • the shapes of the protrusions of the base portion and the holes of the fins are different. Therefore, below, an instrument main body is demonstrated and description of another structural member is abbreviate
  • FIG. 11 is a plan view of the instrument main body 200 according to this modification.
  • FIG. 12 is a cross-sectional view of a connection portion between the fin 220 and the base portion 210 according to this modification. Specifically, FIG. 12A shows a cross section taken along line XIIA-XIIA in FIG. 11 and orthogonal to the outer bottom surface 110b.
  • FIG. 12B is a cross section taken along line XIIB-XIIB in FIG. 12A, and shows a cross section passing through the bottom 120 of the fin 220 and parallel to the outer bottom surface 110b.
  • the base part 210 according to this modification is different from the base part 11 according to the embodiment in that a protrusion 212 is provided instead of the protrusion 112 as shown in FIG. Specifically, the shape of the protrusion 212 is different from that of the protrusion 112.
  • the cross-sectional shape of the protrusion 212 in a cross section parallel to the outer bottom surface 110b is substantially rectangular.
  • the cross-sectional shape of the base portion 212a of the protrusion 212 is substantially rectangular.
  • the top view shape of the protrusion 212 is a long shape, specifically, a rectangle with rounded corners.
  • the short direction of the bottom 120 and the short direction in the cross-sectional shape of the protrusion 212 are substantially coincident.
  • the plurality of protrusions 212 are arranged such that each longitudinal direction is radial from the optical axis J.
  • FIG. 13 is a schematic perspective view of the base portion 210 including the protrusion 212x before plastic deformation according to this modification.
  • the protrusion 212x before plastic deformation is a columnar protrusion having a long bottom surface and top surface.
  • the cross-sectional shape of the protrusion 212x in a cross section parallel to the outer bottom surface 110b is a substantially elliptical shape or a substantially rectangular shape.
  • a hole 222 is provided in the bottom 120 of each of the plurality of fins 220.
  • the hole 222 is substantially oval or substantially rectangular according to the shape of the protrusion 212x.
  • the protrusion 212x is inserted into the hole 222, and the protrusion 212x is plastically deformed, whereby the protrusion 212 shown in FIGS. 11 and 12 is formed.
  • the plastic deformation process of the protrusion 212x is the same as that of the embodiment.
  • the cross-sectional shape of the protrusion 212 in the cross section parallel to the outer bottom surface 110b is a substantially elliptical shape or a substantially rectangular shape.
  • the thermal conductivity from the base portion 210 to the fin 220 can be enhanced.
  • the side wall part 121 of the fin 220 may be deformed by the pressure of plastic deformation.
  • the fin 220 is provided with a hole 222 and stands from each of the long bottom portion 120 that comes into contact with the outer bottom surface 110b and both ends of the bottom portion 120 in the short direction.
  • the lateral direction of the bottom part 120 and the lateral direction in the cross-sectional shape of the protrusion 212 substantially coincide with each other.
  • the side wall portion 121 of the fin 220 can be prevented from being unnecessarily deformed by the pressure. Therefore, it can suppress that the heat dissipation performance of the fin 220 is impaired.
  • a diameter-enlarged portion 212 b extending in the radial direction is provided at the tip of the protrusion 212, and the diameter-enlarged portion 212 b is in contact with or close to the side wall portion 121.
  • FIG. 14 is a schematic perspective view of the base portion 310 including the protrusion 112x before plastic deformation according to the present modification.
  • corrugation is provided in the cylindrical side part 111.
  • the plurality of convex portions 315 have substantially the same shape as the convex portion 115, have a cylindrical curved surface having a smaller diameter than the side surface portion 111, and are smoothly continuous with the side surface portion 111.
  • the convex portion 315 is provided on the opening side of the side surface portion 111 (on the side opposite to the bottom surface portion 110), and is provided with a length that is approximately half the height of the side surface portion 111. Yes. Specifically, the convex portion 315 is provided from the opening of the side surface portion 111 to the vicinity of the center in the height direction of the side surface portion 111. In addition, the convex part 315 may be provided from the opening part of the side part 111 to the bottom face part 110 similarly to the convex part 115.
  • the base portion 310 includes a bottom surface portion 110 having a mounting surface 110a and an outer bottom surface 110b, and a cylindrical side surface portion 111 standing from the periphery of the bottom surface portion 110.
  • a portion 315 is formed.
  • the surface area of the base part 310 can be increased, the heat dissipation of the base part 310 can be enhanced.
  • the convex part 315 was provided as an example of an unevenness
  • the surface of the side part 111 may be formed in a wave shape.
  • the protrusion 112x is plastically deformed by caulking, but the present invention is not limited to this.
  • the protrusion 112x may be plastically deformed by inserting the protrusion 112x into the hole 122 and then bending the protrusion 112x toward the bottom 120 of the fin 12.
  • the protrusion 112x may have a thin plate shape.
  • the outer bottom surface 110b may be a curved surface such as a spherical surface, as long as it has a structure in which water does not easily accumulate.
  • an inclined groove or the like for flowing the water accumulated on the outer bottom surface 110b may be provided.
  • the cross-sectional shape of the fin 12 may be substantially U-shaped.
  • the fin 12 may include a bottom portion 120 and only one side wall portion 121.
  • the bottom part 120 of the fin 12 may not be long, for example, a square-shaped board part etc. may be sufficient.
  • the plurality of fins 12 are provided radially on the outer bottom surface 110b of the base portion 11, but the present invention is not limited thereto.
  • the plurality of fins 12 may be arranged in a stripe pattern.
  • the number of fins 12 is not limited to a plurality, and may be only one, for example.
  • the hole 122 provided in the fin 12 may have a shape that is not a through-hole but is cut out from the end surface of the bottom 120 along the longitudinal direction.
  • the protrusion 112x can be inserted into the hole 122 by sliding the fin 12.
  • the lighting device 1 is an embedded lighting device such as a downlight
  • the lighting fixture 1 may be a spotlight or the like.
  • the embodiment can be 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.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)

Abstract

La présente invention concerne un dispositif d'éclairage (1) qui comporte une source de lumière (20) et un corps principal de dispositif (10) auquel est fixée la source de lumière (20). Le corps principal de dispositif (10) comporte : une partie de base (11) qui comporte une surface de fixation (110a) à laquelle est fixée la source de lumière (20), et une surface inférieure externe (110b) qui se trouve sur le côté opposé de la surface de fixation (110a) ; et une ailette (12) qui est fixée à la surface inférieure externe (110b). La partie de base (11) présente une protubérance (112) qui fait saillie depuis la surface inférieure externe (110b) ; l'ailette (12) comporte un trou (122) ; et l'ailette (12) est fixée à la partie de base (11), la projection (112) étant insérée dans le trou (122) et se trouvant dans un état déformé plastiquement.
PCT/JP2017/003275 2016-03-01 2017-01-31 Dispositif d'éclairage et son procédé de fabrication WO2017150040A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018502602A JP6611063B2 (ja) 2016-03-01 2017-01-31 照明器具及びその製造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-039469 2016-03-01
JP2016039469 2016-03-01

Publications (1)

Publication Number Publication Date
WO2017150040A1 true WO2017150040A1 (fr) 2017-09-08

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WO (1) WO2017150040A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014017234A (ja) * 2012-07-10 2014-01-30 Bosco Led Co Ltd 光半導体照明装置
JP2015162342A (ja) * 2014-02-27 2015-09-07 三菱電機株式会社 照明器具

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014017234A (ja) * 2012-07-10 2014-01-30 Bosco Led Co Ltd 光半導体照明装置
JP2015162342A (ja) * 2014-02-27 2015-09-07 三菱電機株式会社 照明器具

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JPWO2017150040A1 (ja) 2018-09-06
JP6611063B2 (ja) 2019-11-27

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