CN101855494B - Lighting aparatus with uniform heat dissipation - Google Patents

Lighting aparatus with uniform heat dissipation Download PDF

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Publication number
CN101855494B
CN101855494B CN2009800000047A CN200980000004A CN101855494B CN 101855494 B CN101855494 B CN 101855494B CN 2009800000047 A CN2009800000047 A CN 2009800000047A CN 200980000004 A CN200980000004 A CN 200980000004A CN 101855494 B CN101855494 B CN 101855494B
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CN
China
Prior art keywords
heat sink
light fixture
outer cover
fin
light
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Active
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CN2009800000047A
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Chinese (zh)
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CN101855494A (en
Inventor
卢明
胡启钊
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Hong Kong Applied Science and Technology Research Institute ASTRI
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Hong Kong Applied Science and Technology Research Institute ASTRI
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Publication of CN101855494A publication Critical patent/CN101855494A/en
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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
    • F21V29/74—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
    • 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
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/0005—Fastening of light sources or lamp holders of sources having contact pins, wires or blades, e.g. pinch sealed lamp
    • 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
    • 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
    • F28F1/30—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 the means being attachable to the element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

A heat exchange apparatus is provided, which comprises one or more dissipation plates (104), each of the dissipation plates (104) having a plurality of upstanding fins (120) disposed from the dissipation plates (104) at a predetermined angle. Each of the dissipation plates (104) defines a slot in the axial center, and the slots are configured to permit airflow longitudinally through a housing (102). The housing (102) receives the dissipation plates (104), and defines at least one opening (105) to permit an inlet of air into the housing (102). The configuration of the dissipation plates (104) and the housing (102) permits air to move within the housing (102) in a plurality of directions, permitting heat to be dissipated when the housing is positioned in different orientations. A lighting apparatus with the heat exchange apparatus for uniform heat dissipation is also provided.

Description

The light fixture of Homogeneouslly-radiating
Technical field
The present invention relates to a kind of light fixture, particularly a kind of light fixture for Homogeneouslly-radiating in the lighting apparatus.
Background of invention
At present, light emitting diode (LED) technology is a kind of the innovation most and the most fast-developing technology in the lighting field.Although more than ten years LED has been used to indicate and the signal purposes in the past, technical development allows it that widely application is arranged with progressive.Particularly recent years, use the LED rapid development in the illumination application.
Use LED why noticeable at lighting field, many reasons is arranged, the ability of including provides that the illumination of high level more, longer life cycle, minimum maintenance require, the energy-conservation and flexibility aspect color and Beam Control.
LED produces higher heat usually at run duration.Well-known simultaneously, the variations in temperature on the p-n junction of LED (" junction temperature ") can affect the performance of LED, particularly in the color application.When the LED lighting apparatus be used for different towards the time, this is problem especially, because some are towards causing LED to move at higher temperature.Aspect the temperature of control LED, many trials and achievement have been arranged.But previous trial and achievement can not solve some application or structure.So, needing a kind of light fixture and a kind of heat-exchange device, it can solve some defective of LED illumination.
Summary of the invention
According to one embodiment of the present of invention, disclosed a kind of heat-exchange device.Heat-exchange device comprises one or more heat sinks, each heat sink has a plurality of upright fin (fin), be a predetermined angular with heat sink, and wherein each heat sink has a plurality of lines of rabbet joint (slot), it is configured to allow air-flow vertically to pass outer cover; Outer cover is configured to hold one or more heat sinks, and outer cover has an opening at least to allow air to enter in the outer cover.
According to an alternative embodiment of the invention, disclosed a kind of light fixture.Light fixture comprises an outer cover, and it has an opening at least to allow air to enter in the outer cover; One or more heat sinks are positioned in the outer cover, and each heat sink has a plurality of fin, and itself and each heat sink are a predetermined angular, and one or more heat sinks are in outer cover to be axially aligned; A substrate is positioned at outer cover; And one or more light-emitting devices are bonded on the substrate, and wherein substrate provides and is electrically connected so that reception electric power and transferring electric power arrive one or more light-emitting devices.
According to an alternative embodiment of the invention, disclosed a kind of light fixture.Light fixture comprises an outer cover, and it has an opening at least to allow air to enter in the outer cover; Be used for producing the light-emitting device of illumination, light-emitting device is positioned at outer cover; Be used for distributing by the heat abstractor of light-emitting device in the heat of light fixture run duration generation, heat abstractor is positioned at outer cover, heat abstractor comprises and is positioned at many surfaces of first on the athwartship plane and is positioned at the surface of more than second on one or more fore-and-aft planes, and wherein heat abstractor has opening so that air can horizontal and vertically flow in outer cover; And be used to provide electric current to the jockey of light-emitting device.
From the following detailed description, the person skilled in the art will easily understand other embodiments of the invention, wherein the embodiment of the invention is to be described by accompanying drawing.Will recognize that the present invention can be applicable to other and different embodiment, and can revise its some details with different aspects, and do not break away from the spirit and scope of the present invention.
Description of drawings
Fig. 1 is the front perspective view of the light fixture 100 of one embodiment of the invention;
Fig. 2 is the rear perspective of the present invention light fixture embodiment shown in Figure 1;
Fig. 3 is the side view of the present invention light fixture embodiment shown in Figure 1;
Fig. 4 is the side cross-sectional, view of the present invention light fixture embodiment shown in Figure 1;
Fig. 5 is the exploded view of the present invention light fixture embodiment shown in Figure 1;
Fig. 6 is the perspective view of the heat sink of one embodiment of the invention;
Fig. 7 is the side cross-sectional, view of the light fixture of second embodiment of the invention;
Fig. 8 is the exploded view of the present invention light fixture embodiment shown in Figure 7;
Fig. 9 is the side cross-sectional, view of the light fixture of third embodiment of the invention;
Figure 10 is the exploded view of the present invention light fixture embodiment shown in Figure 9.
Detailed Description Of The Invention
In following description, by describing and with reference to accompanying drawing, showing specific embodiments of the invention.Will be understood that, also can use other embodiment, and can make change to its structure and other side, and do not depart from the scope of the present invention.Moreover the various aspects of various embodiment and each different embodiment can be used with any combination.So accompanying drawing and describe in detail is counted as descriptive rather than restrictive.
Usually, the embodiment of the invention relates to a kind of light fixture, and it can be at the enterprising trip temperature management of a plurality of different directions and Homogeneouslly-radiating.In an embodiment, no matter light fixture towards, usually allow air-flow to enter and pass light fixture and heat is dispersed into air from light fixture with identical ratio.Thereby can obtain a consistent convective heat exchange ratio, although light fixture is positioned at different directions.So the embodiment of the invention is guaranteed the mean temperature of light fixture, namely the LED junction temperature remains on the consistent level usually, or in a preset range, so, no matter how light fixture is placed, the heat radiation of light fixture is normally uniform, and the overall performance of LED is also more consistent.
Referring now to accompanying drawing, Fig. 1 is the front perspective view of the light fixture of one embodiment of the invention.Light fixture 100 comprises an outer cover 102, a plurality of heat sink 104, optics 106, erecting device 108 and electric connection 109.Light fixture 100 also comprises light emitting diode (" LED ") 110 (shown in Figure 5) and LED substrate 112 (shown in Figure 5).Outer cover 102 can have one or more openings 105 on outer cover 102, enters in the light fixture 100 to allow air.Each heat sink 104 (partial display among the figure) comprises a plurality of fin 120.
Fig. 2 is the rear perspective of the present invention's light fixture embodiment illustrated in fig. 1, and the side view of Fig. 3 light fixture that to be the present invention embodiment illustrated in fig. 1.Can see outer cover 102, a plurality of heat sink 104, one or more opening 105, erecting device 108 and electric connection 109.In Fig. 2 and 3, can see a plurality of heat sinks 104 by the one or more openings 105 on the outer cover 102.
One or more openings 105 can be any suitable sizes, depend primarily on size and the structure of outer cover 102.But the one or more opening 105 should be enough large, in order to air is entered in the outer cover.For example, the diameter of an appropriate openings may be greatly between 2 and 3 millimeters.But, also can use less or larger opening.And, although an opening may be enough, also can use a plurality of openings to be increased to the air-flow of outer cover 102.A relation also can be arranged between number of openings and the size.For example, the performance of using the little opening of plurality purpose to reach may be similar to the performance of using the large opening of fewer purpose to reach.So, the open construction shown in the embodiment of the invention is not limited in accompanying drawing.The one or more opening 105 also can be any suitable shape, such as round or elongation type, as described in the example embodiment.The lamp outer cover can be made with any suitable material, and can use any suitable manufacture method such as metal to draw (metal drawing), metal stamping (metal punching), die casting (die-casting) or sintering (sintering) and make.
Light fixture is divided into lighting module, radiating module and electric module usually.According to an embodiment, lighting module comprises Optical devices 106, LED 110 and substrate, and radiating module comprises at least one heat sink 104 and outer cover 102, and electric module comprises electric connection 109 and is connected any connection of illumination apparatus power supply.Each module can comprise parts more or less.But for ease of describing, modules has a discrete identifier.
Referring now to Figure 4 and 5, Fig. 4 is the side cross-sectional, view of the present invention's light fixture embodiment illustrated in fig. 1, and the exploded view of Fig. 5 light fixture that to be the present invention embodiment illustrated in fig. 1.At Figure 4 and 5, show outer cover 102, a plurality of heat sink 104, Optical devices 106, erecting device 108, electric connection 109, LED 110 and LED substrate 112.Simultaneously shown also that at each heat sink 104 a plurality of fin 120 are arranged.
Can in Figure 4 and 5, see order and the position of the different parts of light fixture 100.LED 110 and substrate 112 are positioned at outer cover, near the installation end of outer cover 102.A plurality of heat sinks 104 are positioned at outer cover 102, usually axially align, so that Optical devices 106 pass the centre bore of each heat sink, are positioned at vertical central authorities of outer cover 102, if Optical devices are included in the present embodiment.A plurality of heat sinks 104 are parallel to each other usually, and apart from one another by a preset distance.The interval that can realize heat sink 104 by the notch cuttype bearing 502 (as shown in Figure 5) of outer cover inboard.The notch cuttype bearing 502 that any suitable number can be arranged.These intervals are allowed and are conducive in the outer cover 102 and the air-flow between the heat sink 104.
Can use any suitable erecting device 108 and electric connection 109, provide electric power to substrate 112 and LED 110.For ease of describing, provide and describe erecting device 108 and the electric connection 109 of a demonstration at this.But, can use erecting device 108 and the electric connection 109 of any suitable constructions, this depends on will use equipment or the illuminator of light fixture 110.
Variations in temperature in light fixture 100, and the junction temperature of the light emitting diode 110 that uses in the light fixture or led chip encapsulation, directly relevant with the surface area of the thermal component of air-flow and light fixture 100.
Wherein, the electric power that offers light fixture is normally constant, and Newton's law of cooling is: Q=hA (T i-T Amb), wherein
The Q=rate of heat exchange;
H=air-flow constant;
The surface area of A=heat sink or other thermal component;
T i=junction temperature; With
T Amb=ambient temperature.
So variations in temperature is directly relevant with cooling surface area A with the air-flow constant h.When connecting illumination, the air-flow constant according to light fixture towards can greatly changing.For example, down light fixture causes significantly air descend usually.But when light fixture during towards different directions, the embodiment of the invention reduces the variation of air-flow constant, thereby reduces the variations in temperature of the light fixture 100 on different directions.No matter light fixture towards, one or more features of the present invention move to reduce the gas-flow resistance of light fixture 100 together, and reduce the variation on the air-flow constant.So at lighting device run duration on a plurality of directions, gas-flow resistance remains unchanged usually.
According to Newton's law of cooling, by surface area or the increase air-flow constant of increase with the object of contact with air, can reduce the junction temperature of LED.According to embodiments of the invention, by heat sink position and structure, increased the air-flow in the outer cover 102.The interval of heat sink has increased air-flow horizontal between the heat sink, and a plurality of line of rabbet joint has increased the air-flow that vertically passes in heat sink and the outer cover 102.
Referring now to Fig. 6, shown the perspective view of the heat sink of one embodiment of the invention.For ease of describing, the first heat sink 602, the second heat sink 604 and the 3rd heat sink 606 have been shown.Each heat sink 104 is normally ring-like, at the axle center of each heat sink a hole is arranged.The hole can allow air-flow vertically to pass heat sink 104, and passes outer cover 102, when light fixture 100 comprises outer cover.In some embodiments, the hole also allows the light of LED 110 to pass heat sink 104.Each heat sink 104 comprises a plurality of upright fin 120, and fin 120 is formed on the lateral surfaces of heat sink 104 contiguously.But, can use any appropriate method to form fin at heat sink.
Heat sink 104 can be made by any suitable heat sink material, such as metal or ceramic material.For example, heat sink 104 can be made of aluminum or copper.Heat sink can be made according to any appropriate method, such as mechanical stamping, die casting or sintering.According to one embodiment of the present of invention, each heat sink 104 can be stamped to form by flat sheet of metal material.With reference to the first heat sink 602, when punching press, dull and stereotyped part be bent and with flat board with an angle projection, sweep is set up a plurality of lines of rabbet joint 610.Sweep forms the fin 120 of heat sink 104.The heat sink 104 that forms according to the method produces one and the dull and stereotyped approximately heat sink 104 of identical table area, does not need extra material thereby compare with the plane heat sink.But the structure of this heat sink allows more air-flow to pass the line of rabbet joint 610 of heat sink, also allows to carry out along fin 120 surfaces horizontal (usually being parallel to heat sink) and longitudinally (axle that usually is parallel to heat sink) heat exchange.Although be to be described with reference to the first heat sink 602, other described heat sink 104 also has similar structure.
Each heat sink 104 can have different sizes and structure, in order to can adapt to the outer cover of specific illumination assembly.For example, the diameter of the first heat sink 602 is larger than the second heat sink 604, and the diameter of the second heat sink 604 is larger than the 3rd heat sink 606.Although described four heat sinks at Fig. 1 to 5, had two heat sinks to be similar to the second heat sink 604 in the described example embodiment of Fig. 1 to 5.But just as being described, the embodiment of the invention is not subject to these given shapes and structure to the heat sink that provides here.For example, although upright fin 120 is a certain sizes, the fin of greater or lesser size be can use, the size of heat sink 104 and the size of outer cover 102 depended on.And, although the plane of the fin 120 that shows and heat sink 104 approximately is 90 degree, also can use other angle.For example, according to an embodiment, the inclination angle of fin 120 approximately is 90 degree.According to another embodiment, the inclination angle of fin 120 be 30 the degree and 150 the degree between scope in.According to another embodiment, the inclination angle of fin 120 be 60 the degree and 120 the degree between scope in.According to another embodiment, the inclination angle of fin 120 be 85 the degree and 95 the degree between scope in.And, can use the fin of any number and any suitable dimension.The inclination angle of fin also can be different on any one heat sink 104.The inclination angle of fin 120 can change equally, thereby not every fin all has identical inclination angle.
According to embodiments of the invention, lighting device 100 comprises at least one heat sink.But, can use the more heat sink of more number, because more the heat sink of more number can provide larger cooling surface area in outer cover 100, after the surface area associating of each heat sink, can produce larger heat exchange.According to one embodiment of the present of invention, the preset distance in the space, position of a plurality of heat sinks is in order to allow Air Flow and air-flow between the heat sink 104 to pass heat sink 104.Preset distance can be any suitable distance, and the air-flow in outer cover and the outer cover is passed in its permission and/or increase.According to an embodiment, heat sink 104 is about 3 millimeters of space at least.According to another embodiment, heat sink 104 is about 1 millimeter of space at least.If the size of the size of outer cover 102 and/or heat sink 104 is larger, preset distance also can be larger.If heat sink 104 is too close each other, then can reduce air-flow between the heat sink or that pass heat sink.
Fig. 7 is the side cross-sectional, view of the light fixture of second embodiment of the invention.Light fixture 700 comprises outer cover 702, a plurality of heat sink 704, lens 706, erecting device 708, electric connection 709, LED 710 and LED substrate 712.Outer cover 702 can comprise one or more openings 705 on outer cover 702, enters in the light fixture 700 to allow air.Each heat sink 704 (partial display among the figure) comprises a plurality of fin 720.Referring now to Fig. 8, Fig. 8 is the exploded view of light fixture shown in Figure 7, can see order and the position of the different parts of light fixture 700.Unless special the description, the total structure of Fig. 7 and 8 described the second embodiment and running are similar to the described embodiment of Fig. 1 to 6.In the second embodiment of the present invention, the position class of parts is similar to the described situation of Fig. 1 to 6, except LED 710 and substrate 712 are positioned at luminous end near outer cover 702.
Fig. 9 is the side cross-sectional, view of the light fixture of third embodiment of the invention.Light fixture 900 comprises outer cover 902, a plurality of heat sink 904, lens 906, erecting device 908, electric connection 909, LED 910 and LED substrate 912.Outer cover 902 can comprise one or more openings 905 on outer cover 902, enters in the light fixture 900 to allow air.Each heat sink 904 (partial display among the figure) comprises a plurality of fin 920.Referring now to Figure 10, Figure 10 is the exploded view of light fixture shown in Figure 9, can see order and the position of the different parts of light fixture 900.Unless special the description, the total structure of Fig. 9 and 10 described the 3rd embodiment and running are similar to the described embodiment of Fig. 1 to 6.In the third embodiment of the present invention, the position class of parts is similar to the described situation of Fig. 1 to 6, and except LED 910 and substrate 912 are positioned at luminous end near outer cover 902, and substrate 912 also is configured to serve as a heat sink 904.According to an embodiment, substrate 912 is a kind of metal-core printed circuit board (" PCB "), and substrate is configured to a heat sink.
An advantage of the embodiment of the invention is lower assembling and production cost, and producing and assembling only needs limited parts and step, thereby reduces production costs.
Although show especially and described the present invention with reference to described embodiment, it will be understood to those of skill in the art that the change that under the condition that does not break away from spirit and scope of the invention, can make aspect form and the details.For example, although described the material of some type, also can use other suitable material.Moreover, although described outer cover and the heat sink of some given shape, under the condition that does not break away from the scope of the invention, can use other shape and structure.For example, although each heat sink shown in the described embodiment comprises upright fin, the embodiment of the invention also can be as required in conjunction with traditional light fixture.Moreover, although described some Optical devices and camera lens, also can use other optics module and parts according to the requirement of implementation.Although described some concrete luminaire, can use LED or other luminaire of any type.For example, luminaire can be bonded directly on the substrate and encapsulate as chip on board (Chip-on-Board).
So, more than describe and be intended to provide example embodiment of the present invention, so the restriction of the concrete example that the scope of the invention is not provided.

Claims (7)

1. light fixture comprises:
A plurality of heat sinks, each heat sink comprises flat board and a plurality of upright fin that extends out from flat board, itself and flat board are a predetermined angular, wherein a plurality of fin of each heat sink are bent to form by a plurality of parts of flat board, sweep is set up a plurality of lines of rabbet joint, and each line of rabbet joint is between adjacent two fin, and it is configured to allow air-flow vertically to pass outer cover, each heat sink is ring-like, at the axle center of each heat sink a hole is arranged;
One or more substrates, and one or more light-emitting device is on one or more substrates, wherein one or more substrates provide electrical connection, are used for receiving electric power and transferring electric power to one or more light-emitting devices; With
An outer cover is provided for holding one or more heat sinks, at least one opening is arranged to allow air to enter outer cover on the outer cover;
Wherein said light-emitting device and described substrate are positioned at described outer cover, installation end near described outer cover, be positioned at the back of described a plurality of heat sinks, the fin of the heat sink of close described light-emitting device arranges that along ring-like outer rim the fin of other heat sinks is arranged along ring-like inner edge in described a plurality of heat sink.
2. light fixture according to claim 1, wherein substrate is a kind of metal-cored PCB, and substrate is set up as a heat sink.
3. light fixture according to claim 1, wherein light-emitting device is bonded directly on the substrate and encapsulates as chip on board (chip-on-board).
4. light fixture according to claim 1, wherein predetermined angular approximately is 90 degree.
5. light fixture according to claim 1, wherein predetermined angular is between the scopes of about 85 degree at about 60 degree.
6. light fixture according to claim 1, wherein one or more heat sinks are parallel to each other, and the preset distance in space, and wherein preset distance allows to occur Air Flow between at least two heat sinks.
7. light fixture according to claim 1, wherein outer cover also comprises a plurality of bearings, it is configured to hold and the preset distance in space is settled one or more heat sinks.
CN2009800000047A 2009-02-23 2009-02-23 Lighting aparatus with uniform heat dissipation Active CN101855494B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2009/070500 WO2010094178A1 (en) 2009-02-23 2009-02-23 Lighting assembly and heat exchange apparatus for uniform heat dissipation

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CN101855494A CN101855494A (en) 2010-10-06
CN101855494B true CN101855494B (en) 2013-10-23

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US8534875B1 (en) * 2012-05-03 2013-09-17 Shiyong Zhang Customizable heat sink formed of sheet material for a lamp
DE202019100275U1 (en) * 2019-01-18 2020-04-23 Zumtobel Lighting Gmbh Luminaire with heat sink closed on the circumference

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DE202006017924U1 (en) * 2006-11-24 2008-03-27 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lighting unit with an LED light source
US20080192436A1 (en) * 2007-02-09 2008-08-14 Cooler Master Co., Ltd. Light emitting device
WO2008148360A1 (en) * 2007-06-07 2008-12-11 Dejun Fu High power led lamp
CN201116709Y (en) * 2007-08-22 2008-09-17 鹤山丽得电子实业有限公司 High power LED lamp radiator
CN201155716Y (en) * 2008-01-02 2008-11-26 张守仁 Luminous diode illuminator

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