US20130118725A1 - Heat Sink and Fins Thereof - Google Patents

Heat Sink and Fins Thereof Download PDF

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Publication number
US20130118725A1
US20130118725A1 US13/293,121 US201113293121A US2013118725A1 US 20130118725 A1 US20130118725 A1 US 20130118725A1 US 201113293121 A US201113293121 A US 201113293121A US 2013118725 A1 US2013118725 A1 US 2013118725A1
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US
United States
Prior art keywords
wings
heat sink
connection plate
cylinder
fins
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US13/293,121
Inventor
Shyh-Ming Chen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US13/293,121 priority Critical patent/US20130118725A1/en
Publication of US20130118725A1 publication Critical patent/US20130118725A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/20—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being attachable to the element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • 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
    • F21V29/773—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 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
    • 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
    • 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
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/33—Elongate light sources, e.g. fluorescent tubes curved annular
    • 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 invention relates to heat sinks, particularly to combinative heat sinks.
  • LEDs Light emitting diodes
  • An object of the invention is to provide a heat sink and fins thereof, which can increase heat dissipating area, enhance efficiency of heat dissipation, reinforce the structure and improve the extent of safety.
  • the heat sink of the invention includes a cylinder and fins fastened thereto.
  • a hollow in the cylinder is for receiving a heat source.
  • Each the fin includes two parallel wings and a connection plate therebetween.
  • a space is defined by the two wings and the connection plate.
  • FIG. 1 is a perspective view of the invention
  • FIG. 2 is an exploded view of the invention
  • FIG. 3 is a top view of the invention
  • FIG. 4 is a schematic view showing the invention connected with a heat source
  • FIG. 5 is a sectional view of FIG. 4 ;
  • FIG. 6 shows another embodiment of the single fin of the invention
  • FIG. 7 is a perspective view of the heat sink with the fins shown in FIG. 6 ;
  • FIG. 8 shows still another embodiment of the invention.
  • the heat sink 10 includes a cylinder 11 and a plurality of fins 20 .
  • An outer surface of the cylinder 11 is formed with grooves 12 for engaging with the fins 20 and guide slots 13 between every two adjacent grooves 12 for being pressed by a press mold (not shown) to make the grooves 12 grip the fins 20 .
  • a hollow 14 formed in the cylinder 11 is used for receive a heat source such as an LED module as shown in FIGS. 4 and 5 .
  • Each of the fins 20 is composed of two parallel wings 21 , 22 and a connection plate 23 connecting therebetween.
  • the connection plate 23 may be a plane or non-plane such as a segment or folded plate. Inner sides of the wings 21 , 22 are inserted into the grooves 12 .
  • the grooves 12 will be deformed to grip the wings 21 , 22 when the press mold has pressed the guide slots.
  • Each of the wings 21 , 22 of the fins 20 is provided with at least one through hole 24 (three through holes are shown in the figures).
  • the connection plate 23 is provided with three passing holes 25 .
  • the space defined by the wings 21 , 22 and the connection plate 23 can serve as an air passage 26 to allow air to flow therein.
  • the tops and bottoms of the wings 21 , 22 of the heat sink 10 are formed with connecting portions 211 , 221 for fastening to a lamp head 30 and engaging portions 212 , 222 for fastening to a frame 40 , respectively.
  • this assembly can form an LED lamp.
  • the invention includes a cover 50 which is a slice made of plastic or metal. The cover 50 is fastened within the frame 40 for prevent dirt or dusts from entering the heat sink 10 .
  • FIGS. 6 and 7 show another embodiment of the invention.
  • This embodiment differs from the above embodiment by the connection plate 23 a with an open area 23 b at the top thereof.
  • the open area 23 b allows air to flow through for heat convection.
  • FIG. 8 shows still another embodiment of the invention. This embodiment differs from the above embodiments by the wider fins 20 .
  • the wider fins 20 can reduce the quantity required. As shown, only four (but not limited to) wider fins 20 fastened to the cylinder 11 can form a heat sink.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

The heat sink of the invention includes a cylinder and fins fastened thereto. A hollow in the cylinder is for receiving a heat source. Each the fin includes two parallel wings and a connection plate therebetween. A space is defined by the two wings and the connection plate for air flow.

Description

    BACKGROUND OF THE INVENTION
  • 1. Technical Field
  • The invention relates to heat sinks, particularly to combinative heat sinks.
  • 2. Related Art
  • Light emitting diodes (LEDs) have been replacing conventional lighting. Because power of the LEDs becomes higher and higher, the heat generated from the LEDs also upswings. High heat not only makes the LEDs easy to damage, but also tends to cause scalds. As a result, high power LEDs need heat sinks with high efficiency of heat dissipation.
    • SUMMARY OF THE INVENTION
  • An object of the invention is to provide a heat sink and fins thereof, which can increase heat dissipating area, enhance efficiency of heat dissipation, reinforce the structure and improve the extent of safety.
  • To accomplish the above object, the heat sink of the invention includes a cylinder and fins fastened thereto. A hollow in the cylinder is for receiving a heat source. Each the fin includes two parallel wings and a connection plate therebetween. A space is defined by the two wings and the connection plate.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a perspective view of the invention;
  • FIG. 2 is an exploded view of the invention;
  • FIG. 3 is a top view of the invention;
  • FIG. 4 is a schematic view showing the invention connected with a heat source;
  • FIG. 5 is a sectional view of FIG. 4;
  • FIG. 6 shows another embodiment of the single fin of the invention;
  • FIG. 7 is a perspective view of the heat sink with the fins shown in FIG. 6; and
  • FIG. 8 shows still another embodiment of the invention.
    •  DETAILED DESCRIPTION OF THE INVENTION
  • Please refer to FIGS. 1-3. The heat sink 10 includes a cylinder 11 and a plurality of fins 20. An outer surface of the cylinder 11 is formed with grooves 12 for engaging with the fins 20 and guide slots 13 between every two adjacent grooves 12 for being pressed by a press mold (not shown) to make the grooves 12 grip the fins 20. A hollow 14 formed in the cylinder 11 is used for receive a heat source such as an LED module as shown in FIGS. 4 and 5. Each of the fins 20 is composed of two parallel wings 21, 22 and a connection plate 23 connecting therebetween. The connection plate 23 may be a plane or non-plane such as a segment or folded plate. Inner sides of the wings 21, 22 are inserted into the grooves 12. The grooves 12 will be deformed to grip the wings 21, 22 when the press mold has pressed the guide slots.
  • Each of the wings 21, 22 of the fins 20 is provided with at least one through hole 24 (three through holes are shown in the figures). And the connection plate 23 is provided with three passing holes 25. The space defined by the wings 21, 22 and the connection plate 23 can serve as an air passage 26 to allow air to flow therein.
  • Please refer to FIGS. 1, 2 and 4. The tops and bottoms of the wings 21, 22 of the heat sink 10 are formed with connecting portions 211, 221 for fastening to a lamp head 30 and engaging portions 212, 222 for fastening to a frame 40, respectively. Thus this assembly can form an LED lamp. Furthermore, the invention includes a cover 50 which is a slice made of plastic or metal. The cover 50 is fastened within the frame 40 for prevent dirt or dusts from entering the heat sink 10.
  • Please refer to FIGS. 6 and 7, which show another embodiment of the invention. This embodiment differs from the above embodiment by the connection plate 23 a with an open area 23 b at the top thereof. The open area 23 b allows air to flow through for heat convection.
  • FIG. 8 shows still another embodiment of the invention. This embodiment differs from the above embodiments by the wider fins 20. The wider fins 20 can reduce the quantity required. As shown, only four (but not limited to) wider fins 20 fastened to the cylinder 11 can form a heat sink.
  • While the forgoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. As such, the appropriate scope of the invention is to be determined according to the claims.

Claims (19)

What is claimed is:
1. A heat dissipation fin comprising:
two parallel wings; and
a connection plate between the two wings;
wherein a space is defined by the two wings and the connection plate.
2. The heat dissipation fin of claim 1, wherein the connection plate is formed with a through hole.
3. The heat dissipation fin of claim 1, wherein at least one of the wings is formed with a passing hole.
4. The heat dissipation fin of claim 1, wherein tops of the wings are separately formed with connecting portions for fastening to a lamp head.
5. The heat dissipation fin of claim 1, wherein bottoms of the wings are separately formed with engaging portions for fastening to a frame.
6. The heat dissipation fin of claim 1, wherein the connection plate has an open area.
7. The heat dissipation fin of claim 1, wherein the connection plate is a plane in shape.
8. A heat sink comprising:
a cylinder; and
fins, fastened onto an outer surface of the cylinder, each the fin comprising:
two parallel wings; and
a connection plate between the two wings;
wherein a space is defined by the two wings and the connection plate.
9. The heat sink of claim 8, wherein the connection plate is formed with a through hole.
10. The heat sink of claim 8, wherein at least one of the wings is formed with a passing hole.
11. The heat sink of claim 8, wherein tops of the wings are separately formed with connecting portions for fastening to a lamp head.
12. The heat sink of claim 8, wherein bottoms of the wings are separately formed with engaging portions for fastening to a frame.
13. The heat sink of claim 8, wherein the connection plate has an open area.
14. The heat sink of claim 8, wherein the cylinder is formed with grooves to separately engage with the fins.
15. The heat sink of claim 14, wherein inner edges of the wings are separately engaged in the grooves.
16. The heat sink of claim 14, wherein the cylinder is formed with guide slots, and each the guide slot is between every two adjacent grooves.
17. The heat sink of claim 8, wherein the connection plate is a plane in shape.
18. The heat sink of claim 8, further comprising a cover on the cylinder.
19. The heat sink of claim 18, wherein the cover is a slice made of plastic or metal.
US13/293,121 2011-11-10 2011-11-10 Heat Sink and Fins Thereof Abandoned US20130118725A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/293,121 US20130118725A1 (en) 2011-11-10 2011-11-10 Heat Sink and Fins Thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13/293,121 US20130118725A1 (en) 2011-11-10 2011-11-10 Heat Sink and Fins Thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160320046A1 (en) * 2015-04-30 2016-11-03 Hubbell Incorporated Area luminaire
US20180148827A1 (en) * 2016-03-16 2018-05-31 Shenzhen China Star Optoelectronics Technology Co., Ltd. Thermal conduction device and vapor deposition crucible

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7284596B2 (en) * 2001-06-05 2007-10-23 Heat Technology, Inc. Heatsink assembly and method of manufacturing the same
US20090194251A1 (en) * 2008-02-01 2009-08-06 Wen-Chen Wei Heat-dissipating element and heat sink having the same
US7992624B2 (en) * 2008-11-27 2011-08-09 Tsung-Hsien Huang Heat sink module
US8162522B2 (en) * 2004-03-05 2012-04-24 Osram Ag Lamp
US20120273180A1 (en) * 2011-04-27 2012-11-01 Shih-Che Tseng Heat dissipating device
US8547003B2 (en) * 2011-01-28 2013-10-01 Fin-Core Corporation Heat-dissipating module and LED lamp having the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7284596B2 (en) * 2001-06-05 2007-10-23 Heat Technology, Inc. Heatsink assembly and method of manufacturing the same
US8162522B2 (en) * 2004-03-05 2012-04-24 Osram Ag Lamp
US20090194251A1 (en) * 2008-02-01 2009-08-06 Wen-Chen Wei Heat-dissipating element and heat sink having the same
US7992624B2 (en) * 2008-11-27 2011-08-09 Tsung-Hsien Huang Heat sink module
US8547003B2 (en) * 2011-01-28 2013-10-01 Fin-Core Corporation Heat-dissipating module and LED lamp having the same
US20120273180A1 (en) * 2011-04-27 2012-11-01 Shih-Che Tseng Heat dissipating device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160320046A1 (en) * 2015-04-30 2016-11-03 Hubbell Incorporated Area luminaire
US10260718B2 (en) * 2015-04-30 2019-04-16 Hubbell Incorporated Area luminaire
US11199315B2 (en) 2015-04-30 2021-12-14 Hubbell Incorporated Area luminaire
US20180148827A1 (en) * 2016-03-16 2018-05-31 Shenzhen China Star Optoelectronics Technology Co., Ltd. Thermal conduction device and vapor deposition crucible

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