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EP2244009B1 - Heat-dissipating assembly of LED lamp holder - Google Patents

Heat-dissipating assembly of LED lamp holder Download PDF

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Publication number
EP2244009B1
EP2244009B1 EP09005730A EP09005730A EP2244009B1 EP 2244009 B1 EP2244009 B1 EP 2244009B1 EP 09005730 A EP09005730 A EP 09005730A EP 09005730 A EP09005730 A EP 09005730A EP 2244009 B1 EP2244009 B1 EP 2244009B1
Authority
EP
European Patent Office
Prior art keywords
heat
plate
assembly
lamp holder
cover
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.)
Not-in-force
Application number
EP09005730A
Other languages
German (de)
French (fr)
Other versions
EP2244009A1 (en
Inventor
Kuo-Len Lin
Chen-Hsiang Lin
Hwai-Ming Wang
Chiao-Li Huang
Ken Hsu
Chih-Hung Cheng
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.)
CpuMate Inc
Golden Sun News Techniques Co Ltd
Original Assignee
CpuMate Inc
Golden Sun News Techniques Co Ltd
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 CpuMate Inc, Golden Sun News Techniques Co Ltd filed Critical CpuMate Inc
Priority to AT09005730T priority Critical patent/ATE520930T1/en
Priority to EP09005730A priority patent/EP2244009B1/en
Publication of EP2244009A1 publication Critical patent/EP2244009A1/en
Application granted granted Critical
Publication of EP2244009B1 publication Critical patent/EP2244009B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/12—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by screwing
    • 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
    • F21V29/71—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
    • F21V29/717—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements using split or remote units thermally interconnected, e.g. by thermally conductive bars or heat pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • 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
    • 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
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/0275—Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • 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
    • F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
    • 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 a LED lamp, and in particular to a heat-dissipating assembly of a LED lamp holder.
  • An assembly according to the preamble of claim 1 is disclosed in DE 10 2007 042 978 .
  • LED Light-emitting diodes
  • the LED since the LED is an electronic element, it has to be waterproof and dust-proof when being applied to an outdoor lamp. Further, the heat-dissipating performance of the LED has to be also taken into consideration.
  • the current heat-dissipating assembly in a LED lamp holder continues using a heat sink or heat-dissipating device in a computer host.
  • a heat-conducting plate is brought into contact with a heat source.
  • heat pipes are connected to transmit the heat to the lamp cover or heat-dissipating fins, thereby cooling the heat source.
  • the above-mentioned members have to be fixedly connected to each other with a superior heat-conducting effect, such as by means of tin paste or adhesive heat-conducting paste. Therefore, it is impossible to detach these members after being assembled together, which makes more difficult to replace the damaged components in the future. Since it is unable to replace the damaged components, the whole lamp holder should be replaced, which causes the waste in cost.
  • the present Inventor proposes a reasonable and novel structure based on his delicate researches and expert experiments.
  • the present invention is to provide an assembly of a LED lamp holder. Without affecting the contact between a heat-dissipating device and a heat source of a LED unit, a detachable assembly is provided, so that the components within the LED lamp holder can be replaced. Especially, after being detached, the contact between the heat-dissipating device and the heat source of the LED unit will not be affected.
  • the present invention is to provide an assembly of a LED lamp holder, which includes a lamp cover and a heat-dissipating device provided in the lamp cover.
  • An accommodating inlet is provided on the lamp cover.
  • a LED unit is provided below the lamp cover.
  • a cover plate covers the accommodating inlet.
  • the heat-dissipating device comprises a heat-absorbing plate, a heat-dissipating plate and a heat pipe connected between the heat-absorbing plate and the heat-dissipating plate.
  • the heat-absorbing plate is brought into contact with the LED unit, while the heat-dissipating plate is brought into contact with the cover plate.
  • the cover plate is penetrated by a plurality of screw elements. Each of the screw elements is screwed to the heat-absorbing plate. The length of each screw element exactly makes the heat-absorbing plate to abut and contact the LED unit, and the respective screw elements can keep this state.
  • the heat-dissipating device is assembled with the cover plate to form
  • Fig. 1 is an exploded perspective view of the present invention
  • Fig. 2 is an assembled view showing the internal structure of the present invention.
  • the present invention provides an assembly of a LED lamp holder, which includes a lamp cover 1 and a heat-dissipating device 2 provided in the lamp cover 1.
  • the lamp cover 1 is constituted of a base 10 and an upper cover 11.
  • a LED unit 3 is disposed below the base 10.
  • the LED unit 3 comprises a circuit board 30 and a plurality of light-emitting diodes 31 provided on the circuit board 30, so that the light emitted by each of the light-emitting diodes 31 of the LED unit 3 can project toward the underside of the lamp cover 1 ( Fig. 4 ).
  • Each of the front and rear sides of the base 10 is formed with an upright shielding plate 12.
  • the slightly-curved upper cover 11 spans between the two shielding plates 12. Air holes 120 are provided on the shielding plate 12
  • the heat-dissipating device 2 is provided in the lamp cover 1 and comprises a heat-absorbing plate 20, at least one heat pipe 21 and a heat-dissipating plate 22.
  • the heat-absorbing plate 20 is brought into contact with the back surface of the LED unit 3 to facilitate the heat dissipation of the LED unit 3.
  • a heat-conducting substrate 32 is adhered on the back surface of the LED unit 3.
  • the bottom surface of the heat-conducting substrate 32 is provided with a trough 320 for allowing the LED unit 3 to be accommodated in the trough 320.
  • the heat-absorbing plate 20 is provided with at least one groove 200 for allowing one end of the heat pipe 21 to be embedded therein.
  • the groove 200 is preferably located on the bottom surface of the heat-absorbing plate 20, so that it can be adhered to the heat source of the LED unit 3 more closely.
  • the heat-dissipating plate 22 is provided with at least one groove 220 for allowing the other end of the heat pipe 21 to be embedded therein.
  • the groove 220 is preferably located on the top surface of the heat-dissipating plate 22, so that it can be further distant from the heat source of the LED unit 3.
  • the upper cover 11 of the lamp cover 1 is provided with an accommodating inlet 110 that is positioned to correspond to the heat-dissipating device 2 for allowing the heat-dissipating device 2 to pass through.
  • a cover plate 13 covers the accommodating inlet 110.
  • the heat-dissipating plate 22 of the heat-dissipating device 2 is adhered to the underside of the cover plate 13.
  • the cover plate 13 is assembled to the upside of the heat-dissipating device 2. Then, via the accommodating inlet 2, the heat-dissipating device 2 is assembled in the lamp cover 1, so that the underside of the heat-dissipating device 2 can be brought into contact with the heat source of the LED unit 3. At this time, a plurality of screw elements 14 such as bolts are used to penetrate the cover plate 13 to be screwed on the heat-absorbing plate 20.
  • the cover plate 13 is provided with through-holes 130 for allowing the screw elements 14 to pass through. Further, the heat-absorbing plate 20 is provided with screw holes 201 for allowing the screw elements 14 to be screwed therein.
  • the cover plate 13 is provided with through-holes 131 for allowing screws 15 to pass through.
  • the through-holes 131 are positioned to correspond to the screw holes 221 on the heat-dissipating plate 22, so that the cover plate 13 and the heat-dissipating plate 22 can be brought into contact with each other via the screws.
  • screws 16 may pass through the through-holes 132 to fasten the upper cover 11 to screw holes 111 near the periphery of the accommodating inlet 110, thereby completing the assembly.
  • the length of the screw element 14 is preset to make the heat-absorbing plate 20 abut the back surface of the LED unit 3 or contact the top surface of the heat-conducting substrate 32.
  • the heat-absorbing plate 20 of the heat-dissipating device 2 can be brought into contact with the heat source of the LED unit 3 surely.
  • the present invention forms a detachable assembly, so that it is convenient to replace the components within this assembly in the future.
  • the assembly of LED lamp holder of the present invention can be achieved.
  • each of the screw elements 14 has an exact length to make the heat-absorbing plate 20 of the heat-dissipating device 2 abut and contact the LED unit 3. Further, via the respective screw elements 14, the above-mentioned state can be kept. Thus, the heat-dissipating device 2 is assembled with the cover plate 13 to form a detachable assembly. Even after detachment and re-assembly, the respective screw elements 14 can still maintain the contact between the heat-absorbing plate 20 and the LED unit 3.
  • a layer of heat-conducting medium such as heat-conducting paste (not shown) can be applied between the heat-absorbing plate 20 and the back surface of the Led unit 3 (or the top surface of the heat-conducting substrate 32).
  • the heat-dissipating device 2 is additionally provided with other heat-dissipating members 23 on the inner periphery of the lamp cover 1.
  • the present invention already achieves the desired objects and overcomes the problems of prior art.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (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)

Abstract

A LED lamp holder includes a lamp cover (1) and a heat-dissipating device (2) provided in the lamp cover (1). An accommodating inlet (110) is provided on the lamp cover (1). A LED unit (3) is provided below the lamp cover (1). A cover plate (13) covers the accommodating inlet (110). The heat-dissipating device (2) includes a heat-absorbing plate (20), a heat-dissipating plate (22) and a heat pipe (21) connected between the heat-absorbing plate (20) and the heat-dissipating plate (22). The heat-absorbing plate (20) is brought into contact with the LED unit (3), while the heat-dissipating plate (22) is brought into contact with the cover plate (13). The cover plate (13) is penetrated by a plurality of screw elements (14). Each of the screw elements (14) is screwed to the heat-absorbing plate (20). The length of each screw element (14) exactly makes the heat-absorbing plate (20) to abut and contact the LED unit (3).

Description

    BACKGROUND OF THE INVENTION 1. Field of the Invention
  • The present invention relates to a LED lamp, and in particular to a heat-dissipating assembly of a LED lamp holder. An assembly according to the preamble of claim 1 is disclosed in DE 10 2007 042 978 .
    • 2. Description of Prior Art
  • Light-emitting diodes (LED) are widely used as light sources in lighting. However, since the LED is an electronic element, it has to be waterproof and dust-proof when being applied to an outdoor lamp. Further, the heat-dissipating performance of the LED has to be also taken into consideration.
  • The current heat-dissipating assembly in a LED lamp holder continues using a heat sink or heat-dissipating device in a computer host. A heat-conducting plate is brought into contact with a heat source. Then, heat pipes are connected to transmit the heat to the lamp cover or heat-dissipating fins, thereby cooling the heat source. However, the above-mentioned members have to be fixedly connected to each other with a superior heat-conducting effect, such as by means of tin paste or adhesive heat-conducting paste. Therefore, it is impossible to detach these members after being assembled together, which makes more difficult to replace the damaged components in the future. Since it is unable to replace the damaged components, the whole lamp holder should be replaced, which causes the waste in cost.
  • Therefore, in order to overcome the above problems, the present Inventor proposes a reasonable and novel structure based on his delicate researches and expert experiments.
    • SUMMARY OF THE INVENTION
  • The present invention is to provide an assembly of a LED lamp holder. Without affecting the contact between a heat-dissipating device and a heat source of a LED unit, a detachable assembly is provided, so that the components within the LED lamp holder can be replaced. Especially, after being detached, the contact between the heat-dissipating device and the heat source of the LED unit will not be affected.
  • The present invention is to provide an assembly of a LED lamp holder, which includes a lamp cover and a heat-dissipating device provided in the lamp cover. An accommodating inlet is provided on the lamp cover. A LED unit is provided below the lamp cover. A cover plate covers the accommodating inlet. The heat-dissipating device comprises a heat-absorbing plate, a heat-dissipating plate and a heat pipe connected between the heat-absorbing plate and the heat-dissipating plate. The heat-absorbing plate is brought into contact with the LED unit, while the heat-dissipating plate is brought into contact with the cover plate. The cover plate is penetrated by a plurality of screw elements. Each of the screw elements is screwed to the heat-absorbing plate. The length of each screw element exactly makes the heat-absorbing plate to abut and contact the LED unit, and the respective screw elements can keep this state. The heat-dissipating device is assembled with the cover plate to form a detachable assembly.
    • BRIEF DESCRIPTION OF THE DRAWINGS
    • Fig. 1 is a partially exploded perspective view of the present invention;
    • Fig. 2 is an assembled view showing the internal structure of the present invention;
    • Fig. 3 is an assembled view showing the heat-dissipating structure of the present invention; and
    • Fig. 4 is a cross-sectional view of the present invention.
    DETAILED DESCRIPTION OF THE INVENTION
  • In order to make the Examiner to better understand the characteristics and technical contents of the present invention, a detailed description relating thereto will be made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit the present invention.
  • Please refer to Figs. 1 and 2. Fig. 1 is an exploded perspective view of the present invention, and Fig. 2 is an assembled view showing the internal structure of the present invention. The present invention provides an assembly of a LED lamp holder, which includes a lamp cover 1 and a heat-dissipating device 2 provided in the lamp cover 1.
  • The lamp cover 1 is constituted of a base 10 and an upper cover 11. A LED unit 3 is disposed below the base 10. The LED unit 3 comprises a circuit board 30 and a plurality of light-emitting diodes 31 provided on the circuit board 30, so that the light emitted by each of the light-emitting diodes 31 of the LED unit 3 can project toward the underside of the lamp cover 1 (Fig. 4). Each of the front and rear sides of the base 10 is formed with an upright shielding plate 12. The slightly-curved upper cover 11 spans between the two shielding plates 12. Air holes 120 are provided on the shielding plate 12
  • Please also refer to Fig. 3. The heat-dissipating device 2 is provided in the lamp cover 1 and comprises a heat-absorbing plate 20, at least one heat pipe 21 and a heat-dissipating plate 22. The heat-absorbing plate 20 is brought into contact with the back surface of the LED unit 3 to facilitate the heat dissipation of the LED unit 3. In the present embodiment shown in Fig. 4, on the back surface of the LED unit 3, a heat-conducting substrate 32 is adhered. The bottom surface of the heat-conducting substrate 32 is provided with a trough 320 for allowing the LED unit 3 to be accommodated in the trough 320.
  • According to the above, the heat-absorbing plate 20 is provided with at least one groove 200 for allowing one end of the heat pipe 21 to be embedded therein. The groove 200 is preferably located on the bottom surface of the heat-absorbing plate 20, so that it can be adhered to the heat source of the LED unit 3 more closely. Further, the heat-dissipating plate 22 is provided with at least one groove 220 for allowing the other end of the heat pipe 21 to be embedded therein. The groove 220 is preferably located on the top surface of the heat-dissipating plate 22, so that it can be further distant from the heat source of the LED unit 3. On the other hand, as shown in Fig. 1, the upper cover 11 of the lamp cover 1 is provided with an accommodating inlet 110 that is positioned to correspond to the heat-dissipating device 2 for allowing the heat-dissipating device 2 to pass through. A cover plate 13 covers the accommodating inlet 110. The heat-dissipating plate 22 of the heat-dissipating device 2 is adhered to the underside of the cover plate 13.
  • According to the present invention, the cover plate 13 is assembled to the upside of the heat-dissipating device 2. Then, via the accommodating inlet 2, the heat-dissipating device 2 is assembled in the lamp cover 1, so that the underside of the heat-dissipating device 2 can be brought into contact with the heat source of the LED unit 3. At this time, a plurality of screw elements 14 such as bolts are used to penetrate the cover plate 13 to be screwed on the heat-absorbing plate 20. In the present embodiment, the cover plate 13 is provided with through-holes 130 for allowing the screw elements 14 to pass through. Further, the heat-absorbing plate 20 is provided with screw holes 201 for allowing the screw elements 14 to be screwed therein. In addition, the cover plate 13 is provided with through-holes 131 for allowing screws 15 to pass through. The through-holes 131 are positioned to correspond to the screw holes 221 on the heat-dissipating plate 22, so that the cover plate 13 and the heat-dissipating plate 22 can be brought into contact with each other via the screws. Further, when the cover plate 13 covers the accommodating inlet 110, screws 16 may pass through the through-holes 132 to fasten the upper cover 11 to screw holes 111 near the periphery of the accommodating inlet 110, thereby completing the assembly.
  • According to the above, as shown in Fig. 4, the length of the screw element 14 is preset to make the heat-absorbing plate 20 abut the back surface of the LED unit 3 or contact the top surface of the heat-conducting substrate 32. In this way, when the heat-dissipating device 2 and the cover plate 13 are assembled on the upper cover 11, the heat-absorbing plate 20 of the heat-dissipating device 2 can be brought into contact with the heat source of the LED unit 3 surely. Also, the present invention forms a detachable assembly, so that it is convenient to replace the components within this assembly in the future.
  • According to the above, via the above constitution, the assembly of LED lamp holder of the present invention can be achieved.
  • Therefore, according to the assembly of the LED lamp holder of the present invention, since each of the screw elements 14 has an exact length to make the heat-absorbing plate 20 of the heat-dissipating device 2 abut and contact the LED unit 3. Further, via the respective screw elements 14, the above-mentioned state can be kept. Thus, the heat-dissipating device 2 is assembled with the cover plate 13 to form a detachable assembly. Even after detachment and re-assembly, the respective screw elements 14 can still maintain the contact between the heat-absorbing plate 20 and the LED unit 3. Alternatively, a layer of heat-conducting medium such as heat-conducting paste (not shown) can be applied between the heat-absorbing plate 20 and the back surface of the Led unit 3 (or the top surface of the heat-conducting substrate 32). Further, the heat-dissipating device 2 is additionally provided with other heat-dissipating members 23 on the inner periphery of the lamp cover 1.
  • According to the above, the present invention already achieves the desired objects and overcomes the problems of prior art.

Claims (9)

  1. An assembly of LED lamp holder, comprising:
    a lamp cover (1) with an accommodating inlet (110) on a upside thereof and a LED unit (3) on a underside thereof, a cover plate (13) covering the accommodating inlet (110); and
    a heat-dissipating device (2) provided in the lamp cover (1) and having a heat-absorbing plate (20), a heat-dissipating plate (22) and a heat pipe (21) connected between the heat-absorbing plate (20) and the heat-dissipating plate (22), the heat-absorbing plate (20) being brought into contact with the LED unit (3), and the heat-dissipating plate (22) being brought into contact with the cover plate (13); characterized in that
    the cover plate (13) is penetrated by a plurality of screw elements (14), the screw elements (14) are screwed on the heat-absorbing plate (20), and a length of each screw element (14) exactly makes the heat-absorbing plate (20) to abut and contact the LED unit (3) and keeps this state.
  2. The assembly of LED lamp holder according to claim 1, wherein the lamp cover (1) is constituted of a base (10) and an upper cover (11), the LED unit (3) is provided under the base (10), and the accommodating inlet (110) is located on the upper cover (11).
  3. The assembly of LED lamp holder according to claim 2, wherein each of front and rear sides of the base (10) is formed with an upright shielding plate (12), and the upper cover (11) is curved and spans two shielding plates (12) of the front and rear sides of the base (10).
  4. The assembly of LED lamp holder according to claim 3, wherein air holes (120) are provided on the two shielding plates (12).
  5. The assembly of LED lamp holder according to claim 1, wherein the LED unit (3) comprises a circuit board (30) and a plurality of light-emitting diodes (31) on the circuit board (30), a back surface of the circuit board (30) is adhered with a heat-conducting substrate (32), and the heat-absorbing plate (20) is adhered to the heat-conducting substrate (32) and is brought into contact with the LED unit (3).
  6. The assembly of LED lamp holder according to claim 5, wherein a bottom surface of the heat-conducting substrate (32) is provided with a trough (320) for allowing the LED unit (3) to be embedded therein.
  7. The assembly of LED lamp holder according to claim 1, wherein the cover plate (13) is provided with through-holes (130) for allowing respective screw elements (14) to pass through, and the heat-absorbing plate (20) is provided with screw holes (201) for allowing the respective screw elements (14) to be screwed therein.
  8. The assembly of LED lamp holder according to claim 7, wherein the screw element (14) is a bolt.
  9. The assembly of LED lamp holder according to claim 1, wherein the screw element (14) is a bolt.
EP09005730A 2009-04-23 2009-04-23 Heat-dissipating assembly of LED lamp holder Not-in-force EP2244009B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT09005730T ATE520930T1 (en) 2009-04-23 2009-04-23 HEAT DISSIPATION ARRANGEMENT OF AN LED LAMP HOLDER
EP09005730A EP2244009B1 (en) 2009-04-23 2009-04-23 Heat-dissipating assembly of LED lamp holder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09005730A EP2244009B1 (en) 2009-04-23 2009-04-23 Heat-dissipating assembly of LED lamp holder

Publications (2)

Publication Number Publication Date
EP2244009A1 EP2244009A1 (en) 2010-10-27
EP2244009B1 true EP2244009B1 (en) 2011-08-17

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EP09005730A Not-in-force EP2244009B1 (en) 2009-04-23 2009-04-23 Heat-dissipating assembly of LED lamp holder

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AT (1) ATE520930T1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6301423B1 (en) * 2016-09-30 2018-03-28 株式会社テレビ東京 Lighting device
CN109990253B (en) * 2019-04-08 2021-03-26 广东力维电器有限公司 LED lighting equipment convenient to change

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070081340A1 (en) * 2005-10-07 2007-04-12 Chung Huai-Ku LED light source module with high efficiency heat dissipation
JP2009539233A (en) * 2006-05-30 2009-11-12 ネオバルブ テクノロジーズ，インコーポレイテッド Light emitting diode illuminator with high output and high heat dissipation efficiency
DE102007042978A1 (en) * 2007-09-10 2009-03-12 Osram Gesellschaft mit beschränkter Haftung lamp
CN101469819A (en) * 2007-12-27 2009-07-01 富准精密工业(深圳)有限公司 LED lamp

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EP2244009A1 (en) 2010-10-27

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