US20130233527A1 - Tubular radiating seat integrally formed by one working procedure - Google Patents

Tubular radiating seat integrally formed by one working procedure Download PDF

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Publication number
US20130233527A1
US20130233527A1 US13/415,596 US201213415596A US2013233527A1 US 20130233527 A1 US20130233527 A1 US 20130233527A1 US 201213415596 A US201213415596 A US 201213415596A US 2013233527 A1 US2013233527 A1 US 2013233527A1
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Prior art keywords
radiating seat
tubular radiating
tubular
protrudent
closed end
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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
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US13/415,596
Inventor
Tsung-Hsien Huang
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Individual
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Individual
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Priority to US13/415,596 priority Critical patent/US20130233527A1/en
Publication of US20130233527A1 publication Critical patent/US20130233527A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • 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
    • F21V29/70—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
    • 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]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
    • F28D2021/0029—Heat sinks
    • 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
    • F28F1/24—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 transversely
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Definitions

  • the present invention relates to a design of a tubular radiating seat integrally formed by one working procedure, which structures a hollow radiating seat by punching or extruding (hydraulic) an aluminum solid disk of a fixed amount, thereby allowing a closed end as well as several slots on a wall to be integrally and concurrently constructed on the tubular radiating seat.
  • a conventional radiator surrounded by several heat-dispersing fins mainly comprises a number of heat-dispersing fins and a tubular radiating seat.
  • the manufacturing cost of this radiator is in fact expensive since the fins have to be integrally arranged on an outer wall of the tubular radiating seat.
  • such radiator is also bulky and heavy; further worse, the amount of the fins is limited. As a result, the effect of heat dispersion of the radiator is somehow unsatisfactory.
  • the conventional tubular radiating seat of the radiator attaches a closed end to a heating unit, for instance, the CPU or the LED units, thereby scattering the heat.
  • a heating tube that collects heat could be freely adopted so as to enhance the efficiency of heat dispersion.
  • the formation of the tubular radiating seat could be circular, square, or polygonal, etc.
  • the radiating tray and the hollow tubular seat are two individual components. Therefore, where the two components are combined easily results in capillarity and incurs thermal resistance.
  • the unsatisfactory absorbing and the substandard transmission of the heating temperature invite an adverse heat dispersion effect.
  • the costs for respectively molding the radiating tray and the hollow tubular seat are high, and the two components have to be further assembled by an extra working procedure. Thus, such laborious and time-consuming means for producing the high-cost radiator is rather uneconomical.
  • the present invention comprises a hollow radiating seat that is structured by punching or extruding (hydraulic) a fixed amount of an aluminum solid disk.
  • a front part or a middle part of the tubular radiating seat has an integral closed end, and a plurality of slots are integrally formed on an outer wall of the tubular radiating seat for combining with a correspondent fin set. Accordingly, the tubular radiating seat is compactly and integrally formed, which simplifies the manufacturing procedure and reduces the producing costs. Fewer problems would be caused in view of joints, and the capillarity is not a question anymore. The effect of heat dispersion is greatly enhanced since the thermal resistance is prevented and the heating temperature is well absorbed.
  • a further purpose of this invention is to provide a tubular radiating seat integrally formed by one working procedure structures the closed end on the front part of the tubular radiating seat with a protrudent periphery that is integrally built.
  • a sunken part is integrally structured in the protrudent periphery.
  • a groove is formed on an inner wall of the sunken part by a turning procedure.
  • the slots could cooperate with a light cover.
  • FIG. 1 is an assembled perspective view showing a first preferred embodiment of the present invention
  • FIG. 2 is an exploded view of FIG. 1 ;
  • FIG. 3 is an end view of FIG. 1 ;
  • FIG. 4 is a cross-sectional view of section A-A of FIG. 3 ;
  • FIG. 5 is an exploded view showing a projecting light that is composed of a light cover and an electric connector
  • FIG. 6 is an assembled perspective view of FIG. 5 .
  • FIG. 7 is an assembled perspective view of a second preferred embodiment of the present invention.
  • FIG. 8 is an exploded view of FIG. 7 ;
  • FIG. 9 is a top view of FIG. 7 ;
  • FIG. 10 is a cross-sectional view of section A-A of FIG. 9 ;
  • FIG. 11 is an assembled perspective view of a third preferred embodiment of the present invention.
  • FIG. 12 is a top view of FIG. 11 ;
  • FIG. 13 is a cross-sectional view of section A-A of FIG. 11 .
  • a tubular radiating seat integrally formed by one working procedure comprises a hollow radiating seat 1 that is structured by punching or extruding (hydraulic) a fixed amount of an aluminum solid disk.
  • a front part or a middle part of the tubular radiating seat 1 has an integral closed end 11 (as shown in FIG. 3 and FIG. 4 ).
  • a plurality of slots 12 are integrally formed on an outer wall of the tubular radiating seat for combining with a correspondent fin set 2 . Succeedingly, the fin set 2 is compactly combined and inserted within the outer wall of the tubular radiating seat 1 , so that the tubular radiating seat 1 is provided with the fin set 2 .
  • the appearance of the just punched or extruded (hydraulic) tubular radiating seat 1 may be coarse. Wherein, the coarse appearance could be easily smoothened by a processing device.
  • tubular radiating seat 1 could be helpfully cost-down in the production, so it is also competitive and practical in the market.
  • the closed end formed on the front part 11 of the tubular radiating seat 1 has a protrudent periphery 111 that is integrally structured.
  • a sunken part 112 could be integrally structured in the protrudent periphery 111 . Accordingly, attaching the closed end 11 , the protrudent periphery 111 , or the sunken part 112 to a heating unit, such as a CPU or LED units preferably enhances the heat absorbing and dispersing effect.
  • a groove 113 could be alternatively formed on an inner wall of the sunken part 112 by a turning procedure for suiting with a light cover 3 (as shown in FIG. 5 ).
  • a projecting light (as shown in FIG. 6 ) is provided.
  • at least one set of LED units could be previously inserted on the closed end 11 , the protrudent periphery 111 , or the sunken part 112 of the tubular radiating seat 1 .
  • a protrudent periphery 111 a is integrally formed around the closed end 11 a at the front part of the tubular radiating seat 1 a.
  • a plurality of slots 12 a are integrally formed on an outer wall of the tubular radiating seat 1 , so that the tubular radiating seat could be surroundingly combined with a fin set 2 a.
  • the sunken part 112 existing in the first preferred embodiment could be herein omitted.
  • one end of the fin set 2 a could be designed in accordance with the formation of the protrudent periphery 111 a so as to inherently conduct to a depression 21 a. Accordingly, the fin set 2 a could enclose the protrudent periphery 111 a.
  • FIGS. 11 to 13 show a third preferred embodiment of the present invention.
  • a closed end 11 b (as shown in FIG. 13 ) is integrally structured on the middle part of the tubular radiating seat 1 b.
  • a plurality of slots 12 b are integrally formed on the outer wall of the tubular radiating seat 1 b for correspondingly cooperating with an annular fin set 2 b.
  • the fin set 2 b could be compactly and perfectly combined with the outer wall of the tubular radiating seat 1 b, thereby achieving a tubular radiating seat 1 b provided with the fin set 2 b.
  • the present invention particularly utilizes the tubular radiating seat 1 / 1 b that is integrally formed by one working procedure to let the solid closed end 11 / 11 a / 11 b attach to the heating unit.
  • the slots 12 / 12 a / 12 b are also provided for compactly cooperating with the fin set 2 / 2 a / 2 b.
  • joint is not a problem for the tubular radiating seat 1 , and the opportunity of capillarity is also reduced.
  • extra thermal resistance is prevented, which promotes the heat absorbing effect and enhances the heat dispersion efficiency.
  • the manufacturing of the present invention is simplified, and the correlated costs are preferably reduced.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Optics & Photonics (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)

Abstract

A tubular radiating seat integrally formed by one working procedure comprising a hollow radiating seat structured by punching or extruding (hydraulic) certain aluminum solid disk. A front part or a middle part of the tubular radiating seat has an integral closed end. Several slots are integrally formed on an outer wall of the tubular radiating seat for combining with a correspondent fin set. The closed end formed on the front part of the tubular radiating seat has a protrudent periphery integrally structured. Moreover, a sunken part is integrally structured in the protrudent periphery, and a groove is formed on an inner wall of the sunken part by a turning procedure. Attaching the closed end, the protrudent periphery, or the sunken part to a heating unit contributes to the rapid heat absorbing effect and the favorable heat dispersion efficiency. The design of the groove preferably matches to a light cover.

Description

    BACKGROUND OF THE INVENTION
  • (a) Field of the Invention
  • The present invention relates to a design of a tubular radiating seat integrally formed by one working procedure, which structures a hollow radiating seat by punching or extruding (hydraulic) an aluminum solid disk of a fixed amount, thereby allowing a closed end as well as several slots on a wall to be integrally and concurrently constructed on the tubular radiating seat.
  • (b) Description of the Prior Art
  • A conventional radiator surrounded by several heat-dispersing fins mainly comprises a number of heat-dispersing fins and a tubular radiating seat. The manufacturing cost of this radiator is in fact expensive since the fins have to be integrally arranged on an outer wall of the tubular radiating seat. Moreover, such radiator is also bulky and heavy; further worse, the amount of the fins is limited. As a result, the effect of heat dispersion of the radiator is somehow unsatisfactory.
  • The conventional tubular radiating seat of the radiator attaches a closed end to a heating unit, for instance, the CPU or the LED units, thereby scattering the heat. Alternatively, a heating tube that collects heat could be freely adopted so as to enhance the efficiency of heat dispersion. The formation of the tubular radiating seat could be circular, square, or polygonal, etc.
  • There is another kind of conventional tubular radiating seat that utilizes a radiating tray having a central hole to combine with a hollow tubular seat. Herein, the radiating tray and the hollow tubular seat are two individual components. Therefore, where the two components are combined easily results in capillarity and incurs thermal resistance. Herein, the unsatisfactory absorbing and the substandard transmission of the heating temperature invite an adverse heat dispersion effect. In addition, the costs for respectively molding the radiating tray and the hollow tubular seat are high, and the two components have to be further assembled by an extra working procedure. Thus, such laborious and time-consuming means for producing the high-cost radiator is rather uneconomical.
    • SUMMARY OF THE INVENTION
  • It is therefore the purpose of this invention to provide a tubular radiating seat integrally formed by one working procedure. The present invention comprises a hollow radiating seat that is structured by punching or extruding (hydraulic) a fixed amount of an aluminum solid disk. A front part or a middle part of the tubular radiating seat has an integral closed end, and a plurality of slots are integrally formed on an outer wall of the tubular radiating seat for combining with a correspondent fin set. Accordingly, the tubular radiating seat is compactly and integrally formed, which simplifies the manufacturing procedure and reduces the producing costs. Fewer problems would be caused in view of joints, and the capillarity is not a question anymore. The effect of heat dispersion is greatly enhanced since the thermal resistance is prevented and the heating temperature is well absorbed.
  • A further purpose of this invention is to provide a tubular radiating seat integrally formed by one working procedure structures the closed end on the front part of the tubular radiating seat with a protrudent periphery that is integrally built. Preferably, a sunken part is integrally structured in the protrudent periphery. Preferably, a groove is formed on an inner wall of the sunken part by a turning procedure. In order to attach the closed end, the protrudent periphery, or the sunken part to a heating unit, the slots could cooperate with a light cover.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is an assembled perspective view showing a first preferred embodiment of the present invention;
  • FIG. 2 is an exploded view of FIG. 1;
  • FIG. 3 is an end view of FIG. 1;
  • FIG. 4 is a cross-sectional view of section A-A of FIG. 3;
  • FIG. 5 is an exploded view showing a projecting light that is composed of a light cover and an electric connector;
  • FIG. 6 is an assembled perspective view of FIG. 5.
  • FIG. 7 is an assembled perspective view of a second preferred embodiment of the present invention;
  • FIG. 8 is an exploded view of FIG. 7;
  • FIG. 9 is a top view of FIG. 7;
  • FIG. 10 is a cross-sectional view of section A-A of FIG. 9;
  • FIG. 11 is an assembled perspective view of a third preferred embodiment of the present invention;
  • FIG. 12 is a top view of FIG. 11; and
  • FIG. 13 is a cross-sectional view of section A-A of FIG. 11.
    •  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Referring to FIGS. 1 to 4, a first preferred embodiment of the present invention is shown. A tubular radiating seat integrally formed by one working procedure comprises a hollow radiating seat 1 that is structured by punching or extruding (hydraulic) a fixed amount of an aluminum solid disk. A front part or a middle part of the tubular radiating seat 1 has an integral closed end 11 (as shown in FIG. 3 and FIG. 4). A plurality of slots 12 are integrally formed on an outer wall of the tubular radiating seat for combining with a correspondent fin set 2. Succeedingly, the fin set 2 is compactly combined and inserted within the outer wall of the tubular radiating seat 1, so that the tubular radiating seat 1 is provided with the fin set 2.
  • The appearance of the just punched or extruded (hydraulic) tubular radiating seat 1 may be coarse. Wherein, the coarse appearance could be easily smoothened by a processing device.
  • Apparently, the manufacturing of the tubular radiating seat is trouble-free and the subsequent processing is also uncomplicated. Therefore, the tubular radiating seat 1 could be helpfully cost-down in the production, so it is also competitive and practical in the market.
  • As mentioned in afore embodiment, the closed end formed on the front part 11 of the tubular radiating seat 1 has a protrudent periphery 111 that is integrally structured. Or further, a sunken part 112 could be integrally structured in the protrudent periphery 111. Accordingly, attaching the closed end 11, the protrudent periphery 111, or the sunken part 112 to a heating unit, such as a CPU or LED units preferably enhances the heat absorbing and dispersing effect.
  • Continuingly, a groove 113 could be alternatively formed on an inner wall of the sunken part 112 by a turning procedure for suiting with a light cover 3 (as shown in FIG. 5). When an electric connector 4 is further cooperated, a projecting light (as shown in FIG. 6) is provided. Wherein, at least one set of LED units could be previously inserted on the closed end 11, the protrudent periphery 111, or the sunken part 112 of the tubular radiating seat 1.
  • Referring to FIGS. 7 to 10, a second preferred embodiment of the present invention is shown. In this embodiment, a protrudent periphery 111 a is integrally formed around the closed end 11 a at the front part of the tubular radiating seat 1 a. Moreover, a plurality of slots 12 a are integrally formed on an outer wall of the tubular radiating seat 1, so that the tubular radiating seat could be surroundingly combined with a fin set 2 a. Namely, the sunken part 112 existing in the first preferred embodiment could be herein omitted. Moreover, one end of the fin set 2 a could be designed in accordance with the formation of the protrudent periphery 111 a so as to inherently conduce to a depression 21 a. Accordingly, the fin set 2 a could enclose the protrudent periphery 111 a.
  • FIGS. 11 to 13 show a third preferred embodiment of the present invention. Wherein, a closed end 11 b (as shown in FIG. 13) is integrally structured on the middle part of the tubular radiating seat 1 b. A plurality of slots 12 b are integrally formed on the outer wall of the tubular radiating seat 1 b for correspondingly cooperating with an annular fin set 2 b. Whereby, the fin set 2 b could be compactly and perfectly combined with the outer wall of the tubular radiating seat 1 b, thereby achieving a tubular radiating seat 1 b provided with the fin set 2 b.
  • To sum up, the present invention particularly utilizes the tubular radiating seat 1/1 b that is integrally formed by one working procedure to let the solid closed end 11/11 a/11 b attach to the heating unit. Moreover, the slots 12/12 a/12 b are also provided for compactly cooperating with the fin set 2/2 a/2 b. Obviously, joint is not a problem for the tubular radiating seat 1, and the opportunity of capillarity is also reduced. In addition, extra thermal resistance is prevented, which promotes the heat absorbing effect and enhances the heat dispersion efficiency. As a result, the manufacturing of the present invention is simplified, and the correlated costs are preferably reduced.

Claims (6)

What is claimed is:
1. A tubular radiating seat integrally formed by one working procedure comprising a hollow radiating seat that is structured by punching or extruding (hydraulic) a fixed amount of an aluminum solid disk; a front part or a middle part of said tubular radiating seat having an integral closed end; a plurality of slots being integrally formed on an outer wall of said tubular radiating seat for combining with a correspondent fin set.
2. The tubular radiating seat as claimed in claim 1, wherein, said fin set is compactly combined and inserted within said outer wall of said tubular radiating seat.
3. The tubular radiating seat as claimed in claim 1, wherein, an appearance of said tubular radiating seat is trimmed neat.
4. The tubular radiating seat as claimed in claim 1, wherein, said closed end formed on said front part of said tubular radiating seat has a protrudent periphery that is integrally structured.
5. The tubular radiating seat as claimed in claim 4, wherein, a sunken part is integrally structured in said protrudent periphery.
6. The tubular radiating seat as claimed in claim 5, wherein, a groove is formed on an inner wall of said sunken part by a turning procedure.
US13/415,596 2012-03-08 2012-03-08 Tubular radiating seat integrally formed by one working procedure Abandoned US20130233527A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100270014A1 (en) * 2009-04-23 2010-10-28 Tsung-Hsien Huang Heat sink with radially arranged radiation fins
US20100282446A1 (en) * 2007-12-28 2010-11-11 Sharp Kabushiki Kaisha Heat dissipation device and lighting device
US20100327746A1 (en) * 2009-06-30 2010-12-30 Toshiba Lighting & Technology Corporation Lamp and lighting equipment using the same
US20110051430A1 (en) * 2009-08-25 2011-03-03 Shih-Ming Chen Assembly structure for led fixture

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100282446A1 (en) * 2007-12-28 2010-11-11 Sharp Kabushiki Kaisha Heat dissipation device and lighting device
US20100270014A1 (en) * 2009-04-23 2010-10-28 Tsung-Hsien Huang Heat sink with radially arranged radiation fins
US20100327746A1 (en) * 2009-06-30 2010-12-30 Toshiba Lighting & Technology Corporation Lamp and lighting equipment using the same
US20110051430A1 (en) * 2009-08-25 2011-03-03 Shih-Ming Chen Assembly structure for led fixture

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