WO2015129420A1 - Ｌｅｄランプ及びそれに使用するヒートシンク - Google Patents

Ｌｅｄランプ及びそれに使用するヒートシンク Download PDF

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Publication number
WO2015129420A1
WO2015129420A1 PCT/JP2015/053128 JP2015053128W WO2015129420A1 WO 2015129420 A1 WO2015129420 A1 WO 2015129420A1 JP 2015053128 W JP2015053128 W JP 2015053128W WO 2015129420 A1 WO2015129420 A1 WO 2015129420A1
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WO
WIPO (PCT)
Prior art keywords
heat sink
cylindrical portion
hole
led lamp
cooling fan
Prior art date
Application number
PCT/JP2015/053128
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English (en)
French (fr)
Japanese (ja)
Inventor
匠史郎 杉尾
晃三 丸田
Original Assignee
岩崎電気株式会社
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 岩崎電気株式会社 filed Critical 岩崎電気株式会社
Publication of WO2015129420A1 publication Critical patent/WO2015129420A1/ja

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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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • 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
    • F21V29/506—Cooling arrangements characterised by the adaptation for cooling of specific components of globes, bowls or cover glasses
    • 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
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • F21V29/677—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans the fans being used for discharging
    • 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
    • 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
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/30—Light sources with three-dimensionally disposed light-generating elements on the outer surface of cylindrical surfaces, e.g. rod-shaped supports having a circular or a polygonal cross section
    • 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 LED lamp and a heat sink used therefor, and more particularly to a light bulb type LED lamp provided with a cooling fan.
  • LED lamps using light emitting diodes are widely used.
  • the LED lamp has an advantage of having a high luminous efficiency as compared with the discharge lamp, but has a disadvantage that the luminous efficiency is lowered when the LED is heated to a high temperature. Therefore, various measures have been taken to prevent the LED from becoming hot. For example, a cooling fan for cooling the LED is provided.
  • Patent Documents 1 to 5 describe examples of light bulb type LED lamps.
  • LED elements are mounted on a circular substrate perpendicular to the central axis of the lamp.
  • a circular heat sink is provided behind the substrate.
  • the cooling fan is provided on the base side.
  • Patent Document 6 describes an example of an LED lamp in which an LED element is mounted on a prismatic substrate parallel to the center axis of the lamp.
  • the gas flow accelerating fan is provided on the top side opposite to the base.
  • Patent Document 7 describes an LED lighting device provided with an air control unit as means for improving the reliability of a cooling fan.
  • Patent Document 8 describes an example of a cylindrical radiator of a balloon-type projector.
  • An object of the present invention is to provide a bulb-type LED lamp capable of high power and high output by improving the luminous efficiency of the LED and at the same time enhancing the cooling effect by the cooling fan, and a heat sink used therefor. .
  • an LED lamp includes a base, a cylindrical heat sink having a through hole extending along the central axis, a substrate disposed on a side surface of the heat sink, and an LED element mounted on the substrate.
  • a cooling fan disposed between the base and the heat sink, a casing that covers the cooling fan, and a translucent cover that covers the substrate and the LED element, and the center of the cooling fan.
  • the axis and the central axis of the heat sink are aligned with the central axis of the lamp,
  • the heat sink has an inner cylindrical portion and an outer cylindrical portion arranged concentrically, a center through hole is formed inside the inner cylindrical portion, and the inner cylindrical portion and the outer cylindrical portion are formed. A tubular through hole is formed between them.
  • the cooling fan is an axial fan having a motor, an annular air flow path formed around the motor, and a rotary blade provided in the air flow path.
  • the through hole may be arranged corresponding to the motor, and the tubular through hole may be arranged corresponding to the annular air flow path.
  • the cover is formed so as to cover the heat sink, has an air discharge hole at an end opposite to the base, and cooling air from the cooling fan It may be configured to be guided to the outside through the tubular through hole of the heat sink and the air discharge hole of the cover.
  • the cover may be configured to close a top side end portion of the central through hole.
  • the air flow path of the cooling fan, the tubular through hole, and the air discharge hole of the cover may extend in a straight line along an axis parallel to the central axis of the lamp.
  • a radiating portion may be disposed between the inner cylindrical portion and the outer cylindrical portion, and the radiating portions may be disposed at equiangular intervals along the circumferential direction.
  • fins may be formed on the inner surface of the outer cylindrical portion.
  • the heat sink may be an integrally molded product.
  • a substrate provided with an LED element on the outer surface of the outer cylindrical portion a central through hole extending in the axial direction is formed by the inner cylindrical portion, and the inner cylindrical portion A tubular through hole extending in the axial direction is formed between the outer cylindrical portion and the outer cylindrical portion.
  • the central through hole is formed to correspond to the motor of the cooling fan, and the tubular through hole corresponds to an annular air flow path formed around the motor of the cooling fan. May be formed.
  • the heat sink may be provided with fins on the inner surface of the outer cylindrical portion.
  • the heat sink LED lamp may be an extrusion integrally formed product.
  • an LED lamp capable of high power and high output and a heat sink used therefor by improving the luminous efficiency of the LED and at the same time enhancing the cooling effect by the cooling fan.
  • FIG. 1A is a perspective view illustrating a configuration example of an LED lamp according to the present embodiment.
  • FIG. 1B is a perspective view illustrating a configuration example of the LED lamp according to the present embodiment.
  • FIG. 2 is an exploded perspective view of the LED lamp according to the present embodiment.
  • FIG. 3 is an explanatory diagram illustrating a cooling air flow in the LED lamp according to the present embodiment.
  • FIG. 4 is a perspective view for explaining the structure of the heat sink of the LED lamp according to the present embodiment.
  • FIG. 5 is an explanatory view illustrating a cross-sectional structure along the axial direction of the heat sink of the LED lamp according to the present embodiment.
  • FIG. 6 is an explanatory diagram illustrating a planar configuration perpendicular to the axial direction of the heat sink of the LED lamp according to the present embodiment.
  • the LED lamp 10 includes a base 13, a connecting member 19 connected to the base 13, a housing 20 attached to the connecting member 19, and a cylindrical translucent cover 31 attached to the housing 20.
  • the housing 20 includes a connection part 21 and a fan storage part 23.
  • the connecting portion 21 connects the connecting member 19 having a relatively small outer diameter and the fan housing portion 23 having a relatively large outer diameter.
  • a cover 31 is connected to the circumferential edge of the fan housing 23.
  • the cover 31 and the fan storage portion 23 form a substantially cylindrical internal space.
  • the LED lamp according to this embodiment is a so-called bulb type. The internal structure of the LED lamp will be described with reference to FIG.
  • air suction holes 231 and 232 are formed in the fan housing portion 23.
  • an air discharge hole 32 is formed in the top side end portion of the cover 31.
  • the internal structure of the LED lamp according to this embodiment will be described in detail with reference to FIG.
  • the heat sink 11 and the cooling fan 15 are disposed in the internal space formed by the cover 31 and the fan storage portion 23.
  • the cooling fan 15 is disposed between the base 13 and the heat sink 11.
  • a ring-shaped heat insulating member 17 is mounted between the heat sink 11 and the cooling fan 15. The heat insulating member 17 prevents the heat of the heat sink 11 from being transmitted to the motor 15 of the cooling fan.
  • the heat sink 11 is disposed inside the cover 31.
  • the heat sink 11 is cylindrical or columnar, and its central axis (symmetric axis) is aligned with the central axis of the LED lamp.
  • a substrate 30 ⁇ / b> B is mounted on each side surface of the heat sink 11.
  • the heat sink 11 also functions as a support for supporting the substrate.
  • the substrate 30B may be an elongated rectangle.
  • the substrate 30B is disposed so as to be parallel to and surround the central axis of the LED lamp.
  • a plurality of LED elements 30A are aligned and mounted on the substrate 30B.
  • the heat sink 11 has an octagonal column shape, but may have a polygonal column shape such as a quadrangular column shape.
  • the heat sink 11 is made of a metal having high thermal conductivity, such as copper or aluminum alloy.
  • a through hole 111 is formed in the heat sink 11 along the axial direction.
  • a large number of thin plate-like heat-dissipating fins are provided on the inner surface of the through hole. The fin extends over the entire length along the axial direction of the through hole.
  • the shape of the fin is not particularly limited.
  • the cooling fan 15 is disposed inside a substantially cylindrical fan housing 23.
  • the center axis (rotation axis) of the cooling fan 15 is aligned with the center axis of the LED lamp.
  • the cooling fan 15 is typically an axial fan having a casing, a motor, and a fan.
  • the motor may be a direct current brushless motor.
  • An annular air flow path is formed around the motor. Rotating blades are disposed in the air flow path.
  • LED lamp lead wires connected to the LED element 30A and the cooling fan 15 are provided, but the illustration is omitted here.
  • connection part 21 has the top side edge part 21a connected to the fan accommodating part 23, and the nozzle
  • the outer diameter of the top side edge part 21a Is smaller than the outer diameter of the base end 21b. That is, the outer shape of the connection portion 21 is narrowed from the base side toward the top side.
  • the fan housing part 23 has a cylindrical part 23A and a bottom part 23B, and has a substantially cylindrical shape.
  • the outer diameter of the bottom surface portion 23 ⁇ / b> B of the fan housing portion 23 is larger than the top side end portion 21 a of the connection portion 21.
  • the bottom surface portion 23 ⁇ / b> B of the fan housing portion 23 is formed in an annular shape surrounding the top side end portion 21 a of the connection portion 21.
  • a first air suction hole 231 is formed in the cylindrical portion 23 ⁇ / b> A of the fan storage portion 23, and a second air suction hole 232 is formed in the bottom surface portion 23 ⁇ / b> B of the fan storage portion 23.
  • An air discharge hole 32 is formed at the top side end of the cover 31. The internal space formed by the fan housing 23 and the cover 31 is connected to the external space by the air suction holes 231 and 232 and the air discharge hole 32.
  • the through hole 111 is formed in the heat sink 11 along the axial direction.
  • the cross section of the through hole 111 may be circular, but may be square.
  • the central axis (rotation axis) of the through hole 111 is aligned with the central axis of the LED lamp.
  • the through hole 111 has a first opening on the cooling fan 15 side and a second opening on the top side, and forms a sealed space between the two openings. As illustrated, the second opening on the cooling fan 15 side may be closed by a cover 31.
  • the cooling fan 15 has a cylindrical motor 15A and a casing 15B, and an annular air flow path 151 is formed around the motor 15A.
  • a rotating blade is disposed in the air flow path 151.
  • a component space 23C is formed between the inner surface of the cylindrical portion 23A of the fan housing portion 23 and the outer surface of the casing 15B. Circuit parts for driving the fan, cables, and the like are arranged in the part space 23C.
  • the through hole 111 of the heat sink 11 and the annular air flow path 151 of the cooling fan 15 are arranged in alignment. Further, the second air suction hole 232 of the bottom surface part 23 ⁇ / b> B of the fan housing part 23 is connected to the annular air flow path 151 of the cooling fan 15.
  • the air discharge hole 32 of the cover 31, the through hole 111 of the heat sink 11, the annular air flow path of the cooling fan 15, and the second air suction hole 232 of the fan housing portion 23 are along the central axis of the LED lamp, And it arrange
  • the air discharge hole 32 of the cover 31, the through hole 111 of the heat sink 11, the annular air flow path 151 of the cooling fan 15, and the second air suction hole 232 of the fan housing portion 23 are in the center axis of the LED lamp.
  • An air flow path extending along a straight line is formed.
  • the first air suction hole 231 of the cylindrical portion 23 ⁇ / b> A of the fan storage portion 23 is connected to the annular air flow path 151 of the cooling fan 15 through the component space 23 ⁇ / b> C.
  • the cooling air contacts the through hole 111 of the heat sink 11, heat exchange is performed, and the cooling air takes heat away from the heat sink 11.
  • the through hole 111 of the heat sink 11 has a sealed space except for the openings at both ends, all the cooling air from the cooling fan 15 passes through the through hole 111 of the heat sink 11 and Used for cooling. Therefore, the heat sink 11 can be efficiently cooled. Thus, the LED 30 does not reach a high temperature.
  • the outer diameter of the top side end portion 21a of the connection portion 21 is formed to be relatively small, the area of the second air inflow hole 232 of the fan housing portion 23 can be increased. Therefore, it becomes easy to take in external air.
  • the outer diameter of the base-side end portion 21 b of the connection portion 21 is formed to be relatively large, the attachment strength between the connection portion 21, the connecting portion 19, and the base 13 can be increased. For this reason, it is possible to prevent the base 13 from being damaged when the lamp is attached or detached.
  • the external air is first guided into the fan storage unit 23. Therefore, the relatively low temperature air from the outside contacts not only the cooling fan 15 housed in the fan housing part 23 but also circuit components arranged there. Therefore, not only the motor 15A of the cooling fan 15 but also high temperatures of circuit components and the like can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan. It is possible to prevent deterioration and malfunction due to high temperature of circuit components and the like.
  • FIG. 4 shows a state in which the heat sink 11, the heat insulating member 17, and the cooling fan 15 mounted in the internal space of the LED lamp of this embodiment are taken out.
  • the heat sink 11 of the present embodiment includes a central inner cylindrical portion 11A, an outer cylindrical portion 11B disposed concentrically around the central cylindrical portion 11A, and a plate-shaped radial portion 11C provided therebetween.
  • a large number of plate-like heat-dissipating fins 113 are formed on the inner surface of the outer cylindrical portion 11B.
  • a substrate 30B (FIG. 2) is mounted on the outer surface 115 of the outer cylindrical portion 11B.
  • the inner cylindrical portion 11A is formed in a tubular or tubular shape with a circular cross section, but may be formed in a tubular or tubular shape with a polygonal cross section.
  • the outer cylindrical portion 11B is formed in a regular octagonal cross-section tubular or cylindrical shape, but may be formed in a polygonal cross-section tubular or cylindrical shape such as a quadrangular cross section or a hexagonal cross section.
  • the radial portions 11C are provided at equiangular intervals along the circumferential direction between the inner cylindrical portion 11A and the outer cylindrical portion 11B. The radial portion 11C extends radially from the outer surface of the inner cylindrical portion 11A to the corner of the inner surface of the outer cylindrical portion 11B.
  • the heat sink 11 has a through hole 111 extending in the axial direction from the first end on the cooling fan 15 side to the second end on the top side.
  • the through-hole 111 has a central through-hole 111A formed by the inner cylindrical portion 11A, and a tubular through-hole 111B formed between the inner cylindrical portion 11A and the outer cylindrical portion 11B.
  • a breeze cooling air flow having a relatively low flow rate is formed in the central through hole 111A, and a strong wind cooling air flow having a relatively high flow rate is formed in the tubular through hole 111B.
  • the tubular through hole 111B is divided into eight segments by the radial portion 11C. Each segment has a substantially trapezoidal or substantially sectoral cross-sectional shape.
  • FIG. 5 shows a cross-sectional structure along the axial direction of the heat sink 11, the heat insulating member 17 and the cooling fan 15.
  • the central through-hole 111A, the tubular through-hole 111B, the radial portion 11C, and the fin 113 extend over the entire length along the axial direction from the first end portion on the cooling fan 15 side of the heat sink 11 to the second end portion on the top side. It extends.
  • the cooling fan 15 is an axial fan having a cylindrical motor 15A and a casing 15B, and an annular air passage 151 is formed around the motor 15A.
  • the annular air channel 151 is provided with a rotating blade, but the illustration thereof is omitted here.
  • the motor 15A is disposed corresponding to the central through hole 111A. That is, the outer diameter of the inner cylindrical portion 11A is substantially equal to the outer diameter of the motor 15A.
  • the annular air flow path 151 is disposed corresponding to the tubular through hole 111B. As described above, the annular air flow path 151 of the cooling fan 15 is connected to the tubular through hole 111B of the heat sink 11 and forms a continuous straight cooling air flow path parallel to the central axis of the lamp.
  • a ring-shaped heat insulating member 17 is mounted between the heat sink 11 and the cooling fan 15. Therefore, a slight gap 171 is formed between the first end portion of the inner cylindrical portion 11A on the cooling fan 15 side and the motor 15A.
  • the thickness of the gap 171 corresponds to the thickness of the heat insulating member 17. Via this gap 171, the central through hole 111 ⁇ / b> A and the annular air flow path 151 of the cooling fan 15 are connected.
  • a cooling air flow in the axial direction is formed in the annular air flow path 151.
  • Most or most of the cooling air is guided to the tubular through hole 111B.
  • the remaining or a small portion of the cooling air is guided to the central through hole 111A via the gap 171.
  • the cooling air guided to the tubular through-hole 111B directly contacts the outer cylindrical portion 11B and the fins 113, and takes heat away from it.
  • the LED element 30A on the substrate 30B mounted on the outer surface 115 of the outer cylindrical portion 11B is cooled.
  • the cooling air guided to the central through-hole 111A does not contact the outer cylindrical portion 11B, but directly contacts the inner cylindrical portion 11A, takes heat away from it, and simultaneously pushes out the air in the central through-hole 111A for replacement. To do.
  • the planar configuration of the heat sink 11 of this embodiment will be described with reference to FIG.
  • the cross section of the heat sink 11 of the present embodiment includes a circular inner cylindrical portion 11A, a regular octagonal outer cylindrical portion 11B, and a radial portion 11C extending radially.
  • a plurality of fins 113 are provided on the inner surface of the outer cylindrical portion 11B.
  • the fin 113 protrudes inward perpendicularly to the inner surface of the outer cylindrical portion 11B.
  • four fins 113 are provided on each inner surface of the outer cylindrical portion 11B, but the number and height of the fins 113 are not particularly limited.
  • a substrate 30B is attached to each outer surface 115 of the outer cylindrical portion 11B, and an LED element 30A is attached thereto.
  • a recess 117 is formed at each apex of the outer surface of the outer cylindrical portion 11B.
  • the recess 117 extends over the entire length along the axial direction from the first end of the heat sink 11 on the cooling fan 15 side to the second end of the top side.
  • the cross section of the recess 117 is a part of a circle.
  • the radial portion 11 ⁇ / b> C extends radially from the outer surface of the inner cylindrical portion 11 ⁇ / b> A to the outer surface of the recess 117.
  • the heat sink 11 of this embodiment is an integrally molded product formed by extrusion molding. Therefore, a long molded product can be manufactured at low cost. In addition, the press molding process is facilitated by providing the recess 117.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Led Device Packages (AREA)
PCT/JP2015/053128 2014-02-28 2015-02-04 Ｌｅｄランプ及びそれに使用するヒートシンク WO2015129420A1 (ja)

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JP2014-037947 2014-02-28
JP2014037947A JP5975303B2 (ja) 2014-02-28 2014-02-28 Ｌｅｄランプ及びそれに使用するヒートシンク

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CN107062019A (zh) * 2017-06-07 2017-08-18 安徽美拓照明有限公司 一种具有散热孔道的球泡灯结构
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