CN103917824A - Led lighting heat sink and method for manufacturing same - Google Patents
Led lighting heat sink and method for manufacturing same Download PDFInfo
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- CN103917824A CN103917824A CN201280054494.0A CN201280054494A CN103917824A CN 103917824 A CN103917824 A CN 103917824A CN 201280054494 A CN201280054494 A CN 201280054494A CN 103917824 A CN103917824 A CN 103917824A
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- Prior art keywords
- fin
- led
- led element
- heat radiation
- led illumination
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Classifications
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- 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
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- 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
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- 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]
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- 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
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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)
Abstract
The present invention relates to an LED lighting heat sink which is capable of being manufactured from an aluminum plate by a relatively simple processing method, and efficiently performs heat radiation even when applied to and installed in a closed space. The LED lighting heat sink according to the present invention is an LED lighting heat sink (1) where an LED element mounting surface (2) and a radiation side surface (3) are formed integrally or continuously on one sheet metal by drawing. The heat sink of the present invention comprises radiation surfaces in a continuous manner, which are formed on a cylindrical body to face any three-dimensional direction.
Description
Technical field
The present invention relates to a kind of for by the LED illumination fin for LED illumination peripherad space heat elimination of heat of generation when luminous of light emitting source taking light emitting diode (LED) the element structure of multiple elements (be included in substrate etc. be provided with).
Background technology
Illumination taking light emitting diode (LED) element as light emitting source is because power consumption is low and life-span length starts gradually to market penetration.This LED light fixture has the vehicle LED such as LED bulb, the headlamp of the motor vehicle illumination of the ordinary lamps alveolitoid of developing so that incandescent lamp, the so existing bulb of fluorescent lamp are replaced with to target, in building or other field, buries illumination etc. underground.Wherein, what particularly attract attention in recent years is vehicle LED illumination (lamps apparatus for vehicle, headlight for automobile), starts the replacement to LED element.In addition, apply this vehicle LED illumination, the illumination of burying underground of the other fields such as building also starts to replace to LED illumination.
But, bear the non-constant of ability of heat as the LED element of the light emitting source of this LED illumination, in the time exceeding allowable temperature, exist luminous efficiency to reduce and its life-span such problem that is also affected.In order to address this problem, the peripherad space heat elimination of heat producing need to be by LED element luminous time, therefore LED lighting tool is for large-scale fin.
This LED illumination forms by die casting, extrusion molding for material mainly with aluminium (comprising aluminium alloy) greatly with fin.For example, in patent documentation 1～3, disclose the representative heat radiating fin structure among these.These fin have: LED light source configuration is fixed on the baseplate part of face side; And the rear side of this baseplate part spaced apart the fin portion of the multi-disc configured in parallel of giving prominence to, by increasing the surface area of baseplate part and fin portion, heat radiation is increased, can obtain constant thermal diffusivity.
On the other hand, also propose to realize the more fin of lightness and cost degradation all the time.The fin that such as in patent documentation 4, proposition forms the metal plate of the high thermal conductivities such as aluminium is carried out to bending process is as the fin of lamps apparatus for vehicle.This fin is to become section to be spoon shape the metal plate bending process of the thickness of 1mm～3mm left and right to form, be that the radiating part of spoon part and the support that LED element is supported of the shank portion that vertical section is spoon of コ shape forms by vertical section.And, the global shape of fin is following shape: arrange multiple by described radiating part in the scope of its long side direction (or width) with the shred peristome of the slit-shaped that shape forms of constant interval, the comb teeth-shaped that the narrower radiating part of the peristome that multiple width are narrower and width is alternately arranged in parallel.
In addition, (following as the die casting system being formed by aluminum or aluminum alloy etc., also be described as aluminium die casting structure) fin, in patent documentation 5～7, disclose the fin of LED bulb, the fin that discloses vehicle LED illumination in patent documentation 8～10, discloses the fin of burying illumination underground in patent documentation 11,12.
Basic structure based on fin H described die casting, extrudate, existing as shown in Figure 9, LED element (light source) L have configuration be fixed on the baseplate part 50 of face side and the rear side of this baseplate part 50 spaced apart the fin portion 60 of the multi-disc configured in parallel of giving prominence to.Be assembled in housing in vehicle-mounted illumination use such as headlamp, taillight etc. using above-mentioned fin H as motor vehicle and go forward side by side enforcement use, fin H is arranged in limited narrow space.
Therefore, baseplate part 50, the residing heat-dissipating space of fin portion 60 also become the less state of volume of sealing, owing to almost there is no the convection current of air, therefore under environment, almost cannot expect the heat radiation based on convection current above-mentioned setting.Therefore, centered by the heat radiation based on radiation becomes, as in the past above-mentioned, to make the structure of the fin of heat radiation side area change by fin etc., the heat radiation based on this radiation is insufficient, has the such problem of efficient heat radiation that cannot realize on the whole.
,, based on radiation in the situation that, in its efficiency of big or small left and right of the projected area of the represented X, Y, Z axis direction (three-dimensional) in the bottom right of Fig. 9, this projected area is larger, radiation efficiency improves all the more.About this point, the projected area of the Y-direction of the fin of Fig. 9 becomes the total of the plane of baseplate part 50 and the plane of fin portion 60, is therefore preferred.But, the projected area of Z direction be the total of the side of baseplate part 50 and the side of fin portion 60 and become comb teeth-shaped, space is more, the length that therefore becomes not enough baseplate part 50 be multiplied by the gross area after the height of fin portion 60 50% compared with small size.In addition, the projected area of directions X becomes the front of baseplate part 50 and the positive total of fin portion 60, is for example 4 has nothing to do with fin portion 60, and these fin portions repeat and have the projected area identical with 1, and the radiation efficiency of heat radiation side unit are is low.
On the other hand, the existing fin H forming compared with the die casting by described Fig. 9, extrudate, carries out bending process and the fin that forms is realized lightness to described metal plate.In addition, the peristome of described slit-shaped is set adjacently at radiating part, and therefore in lamp house, the air of convection current flows in described radiating part, produces from described peristome through removing such air stream simultaneously, by producing this air stream (convection current), can improve radiating efficiency.
But, to described metal plate carry out bending process and the fin that forms also because resilience of certainly leading in bending process etc. is difficult to improve dimensional accuracy, in order to ensure dimensional accuracy, also need to append bending machining etc.In addition, arrange in the machining of the narrower slit-shaped openings portion of described multiple width and also need precision, in addition, such operation also need to be engaged with each other a part of face after the bending taking metallic plate as material.Thereby compared with the die casting of described Fig. 9, extrudate, cost uprises on the contrary.And the width of the peristome of described slit-shaped is subject to the larger restriction of the area of the size itself for guaranteeing fin, described radiating part one side, must cause width narrower.Therefore,, in the case of in the space of applying, be arranged on the sealings such as lamps apparatus for vehicle, the raising of the radiating efficiency of the convection current based on described air is in fact also brought into play less than the degree of expecting.
In addition, as shown in figure 10, in the fin 71 based on aluminium die casting structure, for installation portion 72 that LED element L is installed conventionally and heat sink body 73 integrally formed.In addition, the track of the light when easily guaranteeing mounted LED element L luminous, when the periphery of the installation portion (pedestal portion) 73 of LED element L is most, height of formation is than the high shape in other positions (heat sink body 73).
But in the time wanting to manufacture the fin of the die casting system being formed by aluminum or aluminum alloy etc. as described above, manufacturing cost raises, and exist fin to become heavy such problem.Especially heavier in the situation that, be not suitable for use in the fin of LED bulb.In addition, form more fin etc., be processed as complicated shape on surface, also have the such problem of mould that needs complicated shape.
So, the fin of aluminium die casting structure, except heavier, also have manufacturing cost and uprises such problem points, therefore also studies and manufactures fin with metal panels such as aluminum or aluminum alloy.But, be only difficult to be formed for installing the installation portion of LED substrate with a sheet material.Consequently there is following problem, that is, become and need multiple parts and the increase of parts number of packages, and need to assemble multiple parts, from this viewpoint, also increase manufacturing cost.
Formerly technical literature
Patent documentation
Patent documentation 1: TOHKEMY 2007-193960 communique
Patent documentation 2: TOHKEMY 2009-277535 communique
Patent documentation 3: TOHKEMY 2010-278350 communique
Patent documentation 4: TOHKEMY 2010-146817 communique
Patent documentation 5: TOHKEMY 2009-170114 communique
Patent documentation 6: TOHKEMY 2009-4130 communique
Patent documentation 7: TOHKEMY 2004-296245 communique
Patent documentation 8: TOHKEMY 2009-266436 communique
Patent documentation 9: TOHKEMY 2010-3621 communique
Patent documentation 10: TOHKEMY 2011-28963 communique
Patent documentation 11: TOHKEMY 2008-117558 communique
Patent documentation 12: TOHKEMY 2009-163955 communique
Summary of the invention
The problem that invention will solve
The present invention completes in view of the above-mentioned problems, its problem is to provide a kind of LED illumination fin of the thermal diffusivity with radiating principal, it can be made with easier processing method of aluminium sheet, even and if in the case of being arranged in the space that does not have the convection current that produced by air or less (cannot expect the heat radiation of the convection current based on the air) sealing of the convection current being produced by air, also radiation is efficiently from the heat of LED light emitting source.
In addition, another problem of the present invention is to provide LED illumination fin and manufacture method thereof, and it realizes lightness from needless to say, without being additionally used for installing the parts of LED substrate, and can realize the simplification of modular construction, the reduction of manufacturing cost.
Solution
In order to realize above-mentioned problem, the LED illumination of first method of the present invention is by the purport of fin, by stretch process one and form continuously LED element installed surface and form with the continuous heat radiation side of this LED element installed surface on a sheet metal, described LED illumination is formed as cylindrical body with fin, this cylindrical body is taking described LED element installed surface as top, taking described heat radiation side as body portion, and there is the peristome of the inner space being impaled by these faces, utilize the surperficial back side of described LED element installed surface and heat radiation side and there is continuously the radiating surface towards three-dimensional any direction.
In the LED of first method of the present invention illumination, with on the basis of fin, preferably, described heat radiation side is formed as cylindric or square tube shape.
In the LED of first method of the present invention illumination, with on the basis of fin, preferably, described sheet metal is that thickness of slab is the aluminum of scope or the thin plate of aluminium alloy system of 0.4mm～2mm.
In addition, the LED illumination of second method of the present invention is by the purport of fin, this LED illumination is formed by metal panel with fin, the pedestal portion of the LED element installation use that described LED illumination bloats to face side by heat sink body portion with from described heat sink body portion with fin forms, and described pedestal portion processes by impression and integrally formed with described heat sink body portion.
In addition, the LED illumination of Third Way of the present invention is by the purport of fin, this LED illumination is formed by metal panel with fin, the pedestal portion that the LED element bloating to face side by heat sink body portion with from described heat sink body portion is installed use forms, rear side in described pedestal portion is laminated with liner plate part
Described pedestal portion processes by impression and is integrally formed with described heat sink body portion.
In the LED of second and third mode of the present invention illumination, with on the basis of fin, preferably, described metal panel is aluminum or aluminium alloy system.
In the LED of second and third mode of the present invention illumination, with on the basis of fin, preferably, the thickness of slab of described metal panel is in the scope of 0.3mm～5mm.
In addition, be by the purport of the manufacture method of fin based on LED of the present invention illumination, process and the pedestal portion of integrally formed heat sink body portion and the LED element installation use that bloats to face side from described heat sink body portion by metal panel impress.
Invention effect
According to first method of the present invention, can be by stretch process by the LED illumination fin that a sheet metal obtains LED element installed surface and the side of dispelling the heat is integrally formed continuously.Thus, the shape of the fin being shaped by stretch process is made as to described LED element installed surface to be become top, described heat radiation side and becomes the cylindrical body of body portion, forms by the surperficial back side of these LED element installed surfaces and heat radiation side the cylindrical body having continuously towards the radiating surface of three-dimensional any direction.And, can in the inner space of this cylindrical body, peristome be set simultaneously.
Thus, the heat radiation that the LED element from being arranged on described LED element installed surface conducts the heat coming is carried out at the surperficial back side that can be continuous from any direction towards described three-dimensional.Therefore, projected area on the three-dimensional of fin is larger, therefore, even if not there is not the convection current being produced by air or few (almost cannot expect the heat radiation of the convection current based on air) of the convection current being produced by air in its application, setting position (place) sealing) in space, also radiation is efficiently from the heat of LED light emitting source.Therefore, can make fin not utilize the convection current of air and use the thermal diffusivity of radiating principal, thereby can advantageously improve on the whole thermal diffusivity.
In addition, the present invention is the fin that the cylindrical body integrally formed by the sheet metals such as aluminium sheet are carried out to stretch process constructed.Therefore, the rolled sheet metal such as thin slice, coiled material, by extruding etc. and processed thin plate only passes through the operation (deburring etc. are also contained in a series of stretch process operation) of the general stretch process of the shaping of these thin plates, just can be with comparalive ease integrally formed, to be made into this cylindrical shape structure.
In addition,, owing to being the stretch process that has used the sheet metal of diel, being therefore difficult for causing the resilience producing in bending machining, thereby can obtaining higher dimensional accuracy.In addition, in the present invention, fin there is no the obstacle of the slit that the such route by heat conduction of described prior art disconnects etc.Therefore, the route of the heat conduction in fin can not disconnect, and till making to be passed to from the heat of LED element the each portion that forms fin, can guarantee high thermal diffusivity.In addition, owing to being the Construction integration forming by stretch forming, therefore also can realize higher parts rigidity, intensity.
In addition, the present invention is made up of light-duty sheet metal, even if the therefore fin of cylindrical body structure, with described die casting system, casting system etc., can be realized lightness, is suitable for use as the illuminating fin of LED of vehicle mounted etc.
According to the LED illumination fin of second and third mode of the present invention, owing to utilizing metal panel to form, therefore realize lightness from needless to say, while manufacture as die casting system also without the mould that uses complicated shape.In addition, integrally formed with heat sink body portion because the pedestal portion for LED substrate is installed processes by impression, therefore without extra for the parts of LED substrate are installed, thereby can realize the simplification of modular construction, the reduction of manufacturing cost.
In addition, by the stacked liner plate part of the rear side in pedestal portion, can the thickness of slab of pedestal portion be formed thicklyer than the thickness of slab of heat sink body portion, thereby can make the heating heat conduction efficiently towards periphery from LED substrate.Thereby, be laminated with liner plate part in the rear side of pedestal portion, can further improve thermal diffusivity.
Brief description of the drawings
Fig. 1 is the stereogram that represents the first embodiment of LED illumination fin of the present invention.
Fig. 2 is the stereogram that represents the second embodiment of LED illumination fin of the present invention.
Fig. 3 is the stereogram that represents the 3rd embodiment of LED illumination fin of the present invention.
Fig. 4 is the stereogram that represents the 4th embodiment of LED illumination fin of the present invention.
Fig. 5 is the key diagram that represents the processing method of LED illumination fin of the present invention.
Fig. 6 is the longitudinal sectional view that represents the 5th embodiment of LED illumination fin of the present invention.
Fig. 7 is the longitudinal sectional view that represents to process by impression the state of manufacturing the related LED illumination fin of the 5th embodiment of the present invention.
Fig. 8 is the longitudinal sectional view that represents the 6th embodiment of LED illumination fin of the present invention.
Fig. 9 is the stereogram that represents the LED illumination fin with existing fin.
Figure 10 is the longitudinal sectional view that represents the LED illumination fin of existing die casting system.
Detailed description of the invention
Below, with reference to accompanying drawing, the preferred embodiment of the present invention is elaborated.It should be noted that, in this description and accompanying drawing, mark identical Reference numeral and omit repeat specification in fact thering is the inscape of identical functional structure.
(Fig. 1, an embodiment of fin)
Fig. 1 represents the first embodiment of LED illumination fin 1 of the present invention.As shown in Figure 1, LED of the present invention illumination with fin 1 by such as aluminium etc., there is integrally formed the forming of sheet metal 1 of constant thickness of slab, there is on the whole the three-dimensional shape of cylindric (the cylinder cup-shaped) of hollow., the LED of the present invention of Fig. 1 illumination with fin 1 by stretch process by a sheet metal one and form continuously LED element installed surface 2 and the side 3 of dispelling the heat forms.
More particularly, in the case of the fin 1 of Fig. 1, with LED element installed surface 2 become the top of disk (plectane) shape, the mode that heat radiation side 3 becomes the body portion (sidepiece) of cylindric (circular tube shaped) that be connected with LED element installed surface 2 is shaped.Therefore, form respectively the radiating surface towards the total four sides of any direction of three-dimensional X, Y, Z and continuous two sides (face=surface in outside) 2a, the 3a of face side and two sides (face=back side of inner side) 2b, the 3b of dorsal part by these LED element installed surfaces 2 and heat radiation side 3.Below, the side of the cylindrical body being connected with LED element installed surface is called to heat radiation side, face that this heat radiation side and LED element installed surface etc. can dispel the heat is combined and is called radiating surface.
10 of the bottom side of cylindrical body is the not in esse spaces of radiating surface, and the inner space being impaled by LED element installed surface 2 and the heat radiation side 3 of cylindrical body is the peristome (spatial portion) of opening towards the outside.The fin 1 of Fig. 1 is cylindric, and therefore for example in the situation that LED element installed surface 2 is 90 degree with heat radiation side 3 angulations, this peristome 10 is formed as the area identical with LED element installed surface 2.Therefore, the heat radiation side area having with respect to fin 1 and there is the area of enough relative size, thereby become air in the described inner space of enough confessions and outside air via described peristome 10 structure in the inside and outside convection current of fin 1.Above-mentioned peristome also comprises other embodiments described later, can not only be arranged on the bottom side of cylindrical body, but outside the bottom side of cylindrical body, is also located at heat radiation side or also can replaces the bottom side of cylindrical body and be located at heat radiation side.But, in the situation that being located at LED element installed surface 2, in the time that peristome becomes excessive, hinder the heat conduction from LED element to heat radiation side, therefore, in the situation that peristome being set to LED element installed surface, preferably limit ground application.Thereby, in the situation that optionally peristome being set to LED element installed surface, be preferably made as the smaller peristome that its width is the slit-shaped of 5mm left and right to the maximum.
At this, LED element installed surface 2 determines according to the design condition of fin 1 with heat radiation side 3 angulations, the i.e. inclination of the body portion (sidepiece) of cylinder, not necessarily need 90 degree, the vertical section of the cylindrical body of fin 1 also can be formed as in LED element installed surface 2 or peristome 10 that any one is larger trapezoidal.But, no matter in which kind of situation, all need to having encouraged or having caused the inside and outside convection current needed enough area of air at described fin 1 in the function as peristome 10.
The in the situation that of this Fig. 1, become the shape that there is dull and stereotyped discoid LED element installed surface 2 and be the heat radiation side 3 of cylindric curved surface, form both by an aluminium sheet is carried out to stretch process, therefore along with the crest line of LED element installed surface 2 ends (bight), one is continuous with heat radiation side 3 for LED element installed surface 2.In other words, the surperficial back side 2a of these LED element installed surfaces 2 and heat radiation side 3,2b, 3a, 3b are continuous with the LED element L of LED element installed surface 2 that is arranged on top by a sheet metal.
At this, LED element installed surface 2 is towards the Y-direction of Fig. 1, and the surperficial 2a of LED element installed surface 2 is towards the top of accompanying drawing, and the back side 2b of LED element installed surface 2 is towards the below of accompanying drawing.In addition, heat radiation side 3 is cylindric, and surperficial 3a, the back side 3b of the side 3 of therefore dispelling the heat is all towards directions X and Z direction (laterally).Therefore, LED element installed surface 2 and heat radiation side 3 form the radiating surface towards any direction of three-dimensional X, Y, Z altogether.
According to above structure, LED of the present invention illumination with fin 1 can be from LED element L to these 2a, 3a, 2b, 3b each direct conduction heat, and can realize this heat respectively to above-mentioned each facing to three-dimensional X, Y, Z in the heat radiation of any direction.
(principle of heat radiation, action effect)
The principle (effect) that is arranged on the heat radiation in the situation of carrying out LED illumination without cross-ventilated space to having the fin 1 of above-mentioned cylinder cup-like shape describes.When making to be installed on the LED element L of LED element installed surface 2 when luminous, therewith together, the heat that LED element L sends conducts to LED element installed surface 2 by the installation portion (not shown) of LED element L bottom.Then the heat that, conducts to LED element installed surface 2 conducts to heat radiation side 3.
Be passed to the heat Q of this LED element installed surface 2 from whole the peripherad enclosure space of difference (heat-dissipating space) radiation of surperficial 2a, the back side 2b of the planar portions of installed surface 2.As mentioned above, LED element installed surface 2 is towards the Y-direction (above-below direction) of Fig. 1, and the surperficial 2a of LED element installed surface 2 is towards the top of accompanying drawing, and the back side 2b of LED element installed surface 2 is towards the below of accompanying drawing.Thereby, described heat Q with respect to heat conduction direction (X of Fig. 1 that installed surface 2 extends, Z direction) and along its right angle orientation (Y-direction=above-below direction of Fig. 1) respectively to each enclosure space (heat-dissipating space) radiation around of the outside of cylindric structure and inner side.
In addition, heat radiation side 3 is cylindric as mentioned above, and surperficial 3a, the back side 3b of heat radiation side 3 is all towards directions X and Z direction (Fig. 1's is horizontal).Thereby, the heat Q that is passed to heat radiation side 3 from surperficial 3a, back side 3b whole of the planar portions of heat radiation side 3 with respect to heat conduction direction (Y-direction of Fig. 1 of extending of heat radiation side 3) and along its right angle orientation (X of Fig. 1, Z direction=laterally) respectively to enclosure space (heat-dissipating space) radiation of the outside of cylindric structure and the surrounding of inner side.
Thereby the heat that LED element L produces dispels the heat to any direction in three-dimensional X, Y, Z.It should be noted that, become to the heat radiation of the inner space being impaled by the heat radiation side 3 of cylinder (cup) shape from the heat radiation of the back side 3b of the back side 2b of LED element installed surface 2, heat radiation side 3.Therefore, the heat radiation of the convection current based on from these faces is from needless to say, and the heat radiation to fin 1 outside between the air in the inner space based on described cylindrical body and outside air, that carry out convection current via described peristome 10 inside and outside fin 1 is also ensured.But, absorbed by the back portion of the heat radiation side 3 of subtend to the heat of inner space radiation, therefore, compared with the heat radiation of surperficial 3a of the face side (outside) from heat radiation side 3, its heat dissipation capacity tails off.
So, there is cylindric (cup-shaped) of Fig. 1 and possess and form the LED element installed surface 2 of this cup-shaped, the fin 1 of heat radiation side 3, even if the heat-dissipating space being closed in the few ligthing paraphernalia of the cross-ventilation of being arranged by radiation in the efficiency of its heat radiation is that the projected area of three-dimensional direction is also very large with respect to the direction of X, Y, Z.Therefore radiation efficiency is high, has excellent thermal diffusivity.In addition, the projected area in this fin 1 does not repeat in the radiation direction to heat-dissipating space radiation, and therefore stretch process (shaping) is easily simply to construct, and the radiating efficiency of every heat radiation unit are is good.
That is, the sealing of heat-dissipating space around of fin of the present invention and volume little almost without under the such use of cross-ventilation (settings) state, the best in use (setting) environment that almost cannot expect the heat radiation of the convection current based on air.In above-mentioned environment for use, need to be centered by the heat radiation based on radiation in order to dispel the heat, thering is radiating surface surface area by increasing fin etc. taking the convection current of air as main heat dispersion, in described existing Structure of radiating fin, heat radiation based on this radiation becomes insufficient, cannot realize on the whole efficient heat radiation.On the other hand, fin of the present invention can be described as be suitable for most the heat radiation taking the heat radiation based on from radiating surfaces such as described heat radiation sides as main body, almost cannot expect the fin of use (setting) environment based on cross-ventilated heat radiation.
And LED element installed surface 2 and heat radiation side 3 are the Construction integrations that do not clamp betwixt composition surface, therefore can not be created in the thermal contact resistance producing in the above-mentioned situation that both engage of making separately.Therefore, the heat conduction between LED element installed surface 2 and heat radiation side 3 becomes easily, and consequently, the heat dispersion of fin entirety significantly improves.
In addition, the structure of fin 1 is to utilize LED element installed surface 2 and heat radiation side 3 that the radiating surface of any direction in three-dimensional X, Y, Z is formed continuously, thereby rigidity is higher.Therefore,, even if be subject to vibrating under such purposes in vehicle-mounted illumination etc., also, without using special stiffener etc. just can keep its shape, safeguard freedom, high life thereby can realize.Principle, the action effect of above-mentioned heat radiation are also basic identical in other following embodiments.
(Fig. 2, the second embodiment of fin)
Fig. 2 illustrates the second embodiment of LED illumination fin involved in the present invention.LED illumination shown in this Fig. 2 is used fin 1 and Fig. 1 in the same manner, there is integrally formed the forming of sheet metal 1 of constant thickness of slab by aluminium etc., but not that the such entirety of Fig. 1 is cylindric, but there is the cube shaped of the square tube shape (square tube cup-shaped) of hollow.Wherein, the LED illumination of the present invention of Fig. 2 is identical with the situation of Fig. 1 at four sides 4,5,6,7 these points that are integrally formed LED element installed surface 2 and heat radiation side from a sheet metal by stretch process with fin 1.
As shown in Figure 2, LED illumination has the shape of cubical surperficial five connections with fin 1, becomes the shape that has LED element installed surface 2 and be the four sides 4,5,6,7 of the heat radiation side at the four sides of plane.
More particularly, in the shaping as follows fin 1 for LED illumination of Fig. 2,, LED element installed surface 2 is the top of the rectangular plate shape on four limits, and the four sides 4,5,6,7 of heat radiation side becomes the body portion (sidepiece) of the square tube shape on four limits that are connected with LED element installed surface 2 respectively.Therefore, form respectively five (face=back side of inner side) 2b, 4b, 5b, the 6b of five (face=surface in outside) 2a, 4a, 5a, 6a, 7a and dorsal parts of the continuous face side of in three-dimensional X, Y, Z any direction, the radiating surface of 7b by the four sides 4,5,6,7 of these LED element installed surfaces 2 and heat radiation side.
10 of the bottom side of cylindrical body is the peristome that radiating surface reality is non-existent, the inner space of cylindrical body is opened to outside (spatial portions).The fin 1 of Fig. 2 is square tube shape, is therefore respectively 90 degree with four sides 4,5,6,7 angulations of heat radiation side at for example LED element installed surface 2, and this peristome 10 becomes the area identical with LED element installed surface 2.Therefore, the heat radiation side area having with respect to fin 1 and have enough relatively large areas, becomes the air in described inner space and outside air is carried out to the structure that convection current is enough via described peristome 10 inside and outside fin 1.At this, LED element installed surface 2 and the selection of heat radiation side 4,5,6,7 angulations and identical with the situation of Fig. 1 for size, the relation of setting position of the Function of peristome 10.
The in the situation that of this Fig. 2, become the shape that there is dull and stereotyped rectangular-shaped LED element installed surface 2 and be the four sides 4,5,6,7 of the heat radiation side of square tube shape rectangular surfaces.Wherein, with Fig. 1 in the same manner, form both by an aluminium sheet is carried out to stretch process, therefore along with the crest line of LED element installed surface 2 ends (bight), one is continuous at the four sides 4,5,6,7 of LED element installed surface 2 and heat radiation side.In other words, the surperficial back side 2a at the four sides 4,5,6,7 of these LED element installed surfaces 2 and heat radiation side, 4a, 5a, 6a, 7a, 2b, 4b, 5b, 6b, 7b are continuous with the LED element L of LED element installed surface 2 that is arranged on top by a sheet metal.
At this, in the same manner, towards the Y-direction of Fig. 2, the surperficial 2a of LED element installed surface 2 is towards the top of accompanying drawing for the situation of LED element installed surface 2 and Fig. 1, and the back side 2b of LED element installed surface 2 is towards the below of accompanying drawing.On the other hand, in the four sides 4,5,6,7 of heat radiation side, surperficial back side 4a, 5a, 6a, 7a and 4b, the 5b at the four sides 4,5,6,7 of heat radiation side, 6b, 7b are respectively towards directions X and Z direction (laterally).Therefore, the four sides 4,5,6,7 of LED element installed surface 2 and heat radiation side coordinates the radiating surface that forms any direction in three-dimensional X, Y, Z.
According to above structure, each of surperficial back side 4a, 5a, 6a, 7a and 2b, the 4b at the four sides 4,5,6,7 of the fin 1 also surperficial 2a from LED element L to these LED element installed surfaces 2, back side 2b, heat radiation side for the LED illumination of Fig. 2,5b, 6b, 7b directly conducts heat, and can realize respectively the heat radiation of this heat to any direction in three-dimensional X, the Y of these each radiating surfaces, Z.
In the case of the embodiment of this Fig. 2, compared with the cylinder cup-shaped of Fig. 1, even if identical volume can have larger surface area.Therefore, further increase to the projected area of heat-dissipating space radiation, there is the higher such effect of thermal diffusivity.
(Fig. 3, the 3rd embodiment of fin for LED illumination)
Fig. 3 illustrates the 3rd embodiment of LED illumination fin involved in the present invention.LED illumination shown in Fig. 3 is used fin 1 and Fig. 2 in the same manner, aluminium etc. is had to integrally formed the forming of sheet metal 1 of constant thickness of slab, and as shown in Figure 2, entirety has the shape of the square tube shape (square tube cup-shaped) of hollow.The LED of the present invention illumination of Fig. 2 with fin 1 utilize stretch process from a sheet metal be integrally formed LED element installed surface 2 and dispel the heat side 3 this put identical with described Fig. 1,2 situation.
The LED illumination of this Fig. 3 has LED element installed surface 2 and the heat radiation side 4,5,6,7 at four sides that is plane with fin 1, becomes to have than this LED element installed surface 2 to exceed cube or cup-like shape cascaded surface 8 in the Y-direction (above-below direction) of the accompanying drawing of a section and smooth and rectangular top surface 9, L word shape or step-like hollow.
More particularly, in the LED illumination of Fig. 3 with fin 1, have top utilize each other cascaded surface 8 continuous, as the LED element installed surface 2 at smooth rectangular-shaped top with exceed the top surface 9 of the smooth and rectangular shape of a section than this LED element installed surface 2.And, the four sides 4,5,6,7 of heat radiation side is configured as, two sides the 4, the 6th, the flat shape of the rectangle identical with Fig. 2, two sides the 5, the 7th, different from Fig. 2 and be the flat shape of L word shape, thus become the body portion (sidepiece) of square tube shape (square tube type).
Therefore, by four sides 4,5,6,7 each self-formings of these LED element installed surfaces 2, the smooth and top surface 9 of rectangular shape, the cascaded surface 8 that these are linked up and heat radiation side radiating surface of seven (face=back side of inner side) 2b, 4b of seven (face=surface in outside) 2a, 4a, 5a, 6a, 7a, 8a, 9a and dorsal parts of the continuous face side of any direction, 5b, 6b, 7b, 8b, 9b in three-dimensional X, Y, Z respectively.
Described top surface 9 smooth and rectangular shape can be as the place of installing for fixture in the time of fixing cooling fins in LED illumination.Or, can be with connecting, such as, place while throwing light on needed miscellaneous part, reflecting plate etc. of fixed L ED.Thereby, the in the situation that of Fig. 3, although the LED element installed surface 2 as the top of tubular has double-deck step shape, as long as but can carry out stretch process, can certainly increase as required cascaded surface 8, continuous smooth rectangular-shaped top and by the number of plies of LED element installed surface 2 be made as three layers above step-like.
The bottom side of cylindrical body 10 with Fig. 2 in the same manner, be heat radiation side reality peristome (spatial portion) non-existent, that open to the outside of the inner space of cylindrical body.The fin 1 of Fig. 3 is square tube shape, therefore be respectively 90 degree at LED element installed surface for example 2 and four sides 4,5,6,7 angulations of heat radiation side, this peristome 10 becomes the area identical with the total area of LED element installed surface 2 and smooth and rectangular top surface 9.Therefore, the heat radiation side area having with respect to fin 1 and have enough relatively large areas, becomes the air in described inner space and outside air is carried out to the structure that convection current is enough via described peristome 10 inside and outside fin 1.At this, LED element installed surface 2 and the selection of heat radiation side 4,5,6,7 angulations and identical for the situation of the relation between the size of the Function of peristome 10 and Fig. 2.
The situation of this Fig. 3 also with Fig. 2 in the same manner, form both by an aluminium sheet is carried out to stretch process, therefore one is continuous along with the crest line of the end (bight) of LED element installed surface 2, top surface 9 or cascaded surface 8 cascaded surface 8 of the top surface 9 of LED element installed surface 2, smooth and rectangular shape, above-below direction (Y-direction) that these are linked up and the four sides 4,5,6,7 as heat radiation side.In other words, surperficial back side 2a, 9a, 8a, 4a, 5a, 6a, 7a and 2b, the 9b at the four sides 4,5,6,7 of these LED element installed surfaces 2, top surface 9, cascaded surface 8, heat radiation side, 8b, 4b, 5b, 6b, 7b are continuous with the LED element L of LED element installed surface 2 that is arranged on top by a sheet metal.
At this, LED element installed surface 2, top surface 9 are towards the Y-direction of Fig. 3, and the surperficial 2a of LED element installed surface 2, the surperficial 9a of top surface 9 are towards the top of accompanying drawing, and the back side 2b of LED element installed surface 2, the back side 9b of top surface 9 are towards the below of accompanying drawing.On the other hand, heat radiation 44,5,6,7 of side, cascaded surface 8 and surperficial back side 4a, 5a, 6a, 7a, 8a and 4b, 5b, 6b, 7b, 8b are respectively towards directions X and Z direction (laterally).Therefore, the four sides 4,5,6,7 of LED element installed surface 2 and top surface 9, heat radiation side and cascaded surface 8 form the radiating surface of any direction in three-dimensional X, Y, Z altogether.
According to above structure, for the LED illumination of Fig. 3, each of surperficial back side 8a, the 8b of surperficial back side 4a, 5a, 6a, 7a and 4b, the 5b at the four sides 4,5,6,7 of the surperficial 9a of the fin 1 also surperficial 2a from LED element L to these LED element installed surfaces 2 and back side 2b, top surface 9 and back side 9b, heat radiation side, 6b, 7b, cascaded surface 8 directly conducts heat, and can realize respectively the heat radiation of this heat to any direction in three-dimensional X, Y towards these faces, Z.And, compared with the fin of described Fig. 1,2 cylinder cup-shaped or rectangular-shaped shape, even identical volume, by thering is more surface area such as top surface 9 grade, projected area to heat-dissipating space radiation further increases, and improves as the thermal diffusivity of fin.
(Fig. 4, the 4th embodiment of fin)
Fig. 4 illustrates the 4th embodiment of LED illumination fin involved in the present invention.LED illumination shown in Fig. 4 is the global shape identical with Fig. 2 with fin 1, but there is no the heat radiation side 6 in Fig. 2, and with the peristome 10 of bottom side in the same manner, there is altogether the peristome (spatial portion) 11 that heat radiation reality inner space non-existent, cylindrical body, side is opened to outside.
This peristome 11 arranges in the scope of rigidity that does not hinder fin 1, with the peristome 10 of bottom side ordinatedly, the heat radiation side area having with respect to fin 1 and can there is larger area.Thereby the air in described inner space and outside air improve in the inside and outside convection function of fin 1 via described peristome 10,11.Consequently, compared with the situation of Fig. 2, although correspondingly make heat radiation side area diminish with not thering is heat radiation side 6, improve and correspondingly still there is excellent thermal diffusivity with the convection function of described air.
(the shared item of embodiment)
Also can be according to the purposes of fin 1, installation position, on above LED element installed surface and heat radiation side, by the part at each, these faces are carried out otch processing, concavo-convex shaping processing is set parts is set space, slit or the partial shape etc. of use are installed.In addition, heat radiation side also can be according to needs such as parts installations, as described in omit the part of face self or face Fig. 4.
(preparation method of fin)
Then,, with the example that is shaped as shown in Fig. 1, the preparation method of fin of the present invention is described.
(material metal thin plate)
(or fin) sheet metal of material as stretch process is preferably defined as the 1000 fine aluminium systems that are of AA or JIS specification according to the size of the desired thermal conduction characteristic of fin and heat dissipation characteristics.Wherein, select identical 1000 to be or other 3000 are, 5000 are, 6000 are etc. to be suitable for its aluminium alloy, modified condition according to the characteristic that requires of necessary intensity, stretch process (formability) or corrosion resistance, heat resistance etc.In addition, can also be according to condition and using steel plate, magnesium plate etc.
The thickness of slab (thickness) of sheet metal is selected in the time considering the lightness of fin, necessary intensity, rigidity and stretch process (formability) from the scope of 0.4mm～2mm.Cross when thin when this thickness of slab, cannot guarantee necessary intensity, rigidity or the stretch process (formability) of fin.On the other hand, in the time that this thickness of slab is blocked up, cannot realize the lightness of fin, stretch process (formability) reduces on the contrary.
In the case of adopting the example that fine aluminium or aluminium alloy are material, manufacture pure aluminum plate or the aluminium alloy plate of the thickness of regulation by the material manufacturing method of the common plate shape such as rolling, extruding.Next, the aluminium sheet producing is cut into big or small plate or the punching of profile of making fin and becomes smooth blank.
(stretch process)
As shown in Figure 5, this blank 20 is implemented to use by having and the shape of the fin the being shaped stretch process of press molding equipment corresponding shape, that drift 22, punch die (mould) 21 and plate casting die 23 form respectively, and in normal temperature (room temperature) the inner cylindrical body (the cup type of hollow) that becomes space that is shaped.Fig. 5 (a) illustrates to press molding equipment and has assembled the state before the stretch process of blank 20.Fig. 5 (b) illustrates drift 22, punch die (mould) 21 and plate casting die 23 relative moving up and down and the state in the process of the shape of the fin 1 of Fig. 1 as described in by blank 20 stretch process being as arrow of making.It should be noted that, in Fig. 5 (b), as the plate casting die part 24 of the surplus portion of fin 1 (blank 20) periphery in this series of operation by deburring.
The stretch process (stretch forming) of the press molding equipment based on above-mentioned not only can be made the fin of described Fig. 1, also can make equally the fin 1 of Fig. 2～Fig. 4, utilize stamping operation and the decompressor of these general, common metallic plates, can easily and at an easy rate make.What this was such with described patent documentation 4 pass through carries out compared with fin that bending process makes metal plate, and it is easy and cheap to can be described as.In addition, because the present invention adopts stretch process, therefore also have advantages of and be easy to guarantee that dimensional accuracy is such.
(emissivity of sheet metal)
Fin of the present invention is in order to obtain high-cooling property, and the emissivity ε of described sheet metal is preferably more than 0.6.Therefore, also can be on the whole surface of material metal thin plate, before stretch process, implement the precoating processing (application epithelium) of the blacking that rate of heat dissipation is high.Or also can after stretch process, implement the rear painting processing (application epithelium) of the blacking that radiance is high.Thus, can increase as transferring heat fin, based on radiation.If this precoating is processed before stretch process and implemented to material metal thin plate in advance, also play the effect of the lubricant in stretch process.
This radiance ε is that the heat radiation of actual object is with respect to the ratio of theoretical value (desirable heat radiator is the heat radiation of black matrix), actual mensuration can be the method described in TOHKEMY 2002-234460 communique, and the portable radiance determinator that also can be developed by universe aeronautical research Development institution is measured.
Fin of the present invention can similarly carry out with the installation of general so far fin to the installation of vehicle-mounted LED lamp etc., and this point is also advantage.Conventionally, vehicle-mounted LED lamp (lamps apparatus for vehicle) comprising: the LED substrate as the LED element of light source is installed; Reflector plate by from the light from LED to the reflection of irradiation direction front; Surround the housing of these LED substrates and reflector plate; The outer lens being formed by transparent material of the opened front end of closure casing; And the fin configuring contiguously with LED substrate heat.Described reflector plate is shaped by resin material, and near LED on LED substrate, possesses the reflecting surface of the focal parabola of tool system.At this, fin of the present invention is used as the fin configuring contiguously with described LED substrate or LED substrate heat.
And according to the vehicle-mounted LED lamp of said structure, above-mentioned LED element is driven and luminous, the light penetrating from this LED element is reflected sheet reflection and shines and irradiate to irradiation direction front via outer lens.At this, the heat being produced by above-mentioned LED transmits to fin of the present invention as mentioned above, and discharges to the outside of housing, and the temperature rise of LED element is suppressed.
Above such based on fin of the present invention be suitable for most the heat radiation based on radiation taking the heat of the radiating surface from described heat radiation side etc. as main body, almost there is no a fin of the usage space (using, arrange environment) that cross-ventilated (almost cannot expect the heat radiation of the convection current based on air) is narrow.Therefore,, except the heat dissipation element towards Vehicular illumination lamp, except general lighting device, can also be used for electronic component thermal component etc.
In addition, Fig. 6 illustrates the related LED of the 5th embodiment of the present invention illumination fin 31 (following, be sometimes only called fin and describe).This fin 31 is implemented impression by a metal panel of the aluminum to for example thickness of slab is 0.3～5mm or aluminium alloy system and is processed shape.It should be noted that, the metal panel using as the manufacture of fin 31, especially preferably use the fine aluminium of JIS1000 system, the thermal conductivity such as aluminium alloy, the aluminium alloy of JIS5000 system of JIS3000 system and the metal material having excellent formability, but also can use other thermal conductivitys such as aluminium alloy material of JIS6000 system and formability is good and other metal panels such as high-intensity aluminium alloy material or copper.
It should be noted that, be that aluminum or aluminium alloy are in the situation that processed at metal panel, before the thickness of slab of this metal panel, be illustrated as 0.3～5mm, and its reason is, when the thickness of slab of metal panel exceeds in the situation of 5mm, its quality is overweight and be unsuitable for the fin 31 as LED lamp, on the other hand, in the situation that thickness ratio 0.3mm is thin, cannot guarantee enough intensity as the member of formation of LED lamp, be unsuitable for the fin 31 as LED lamp.The thickness of slab of preferred metal panel is 0.35～2.5mm.
Specifically, the LED illumination of present embodiment forms with the pedestal portion 33 that fin 31 is trapezoidal shape by flat heat sink body portion 32, the vertical section that bloats to face side (being upside in Fig. 6) than this heat sink body portion 32, forms fin 31 by the face side installation LED element L in pedestal portion 33.In addition, be formed with recess 34 in the rear side of pedestal portion 33.
Next, based on Fig. 7, to the 6th embodiment of the present invention, related LED illumination describes by the manufacture method of fin 31.
Fig. 7 illustrates the LED mould using with the manufacture of fin 31 that throws light on, the 35th, and for the manufacture of the metal panel of fin 31.Form in the parts of mould, the 36th, be provided with the punch die of the surperficial recess 36a that is used to form pedestal portion 33 at lower surface, the 36th, form recess 34 and be used to form the drift of pedestal portion 33 by the back side in pedestal portion 33, the 38th, charge support.In addition, the 39th, backing plate, the 40th, cushion pins.
First, metal panel 35 is being loaded after the upper surface of charge support 38, punch die 36 declines, the punch die 36 after decline and a pair of charge support 38,39 clamping metal panels 35.In addition, punch die 36 continues to decline, and drift 37 is relatively approaching with respect to metal panel 35, and a part (pars intermedia) for metal panel 35 is pushed in the recess 36a of punch die 36.Now, the both sides of metal panel 35 keep the state by punch die 36 and 38,39 clampings of a pair of charge support.A part for the metal panel 35 being urged is configured as vertical section trapezoidal shape by the powerful compression of the upper surface of the recess 36a of punch die 36 and drift 37, becomes pedestal portion 33.
In the time of the upper surface compressed metal panel 35 of the recess 36a by punch die 36 and drift 37 a part of, be formed with recess 34 in the rear side of pedestal portion 33.The remainder of the metal panel 35 being clamped by punch die 36 and charge support 38 in addition, becomes heat sink body portion 32.
Fig. 8 illustrates the LED illumination fin 31 that different embodiment of the present invention is related.This fin 31 is also implemented impression by the metal panel of be 0.3～5mm to thickness of slab aluminum or aluminium alloy system and is processed shape, identical with the embodiment shown in Fig. 6 with the structure that the pedestal portion 33 of the vertical section trapezoidal shape bloating to face side than this heat sink body portion 32 forms by heat sink body portion 32.
It should be noted that, in the explanation of following this embodiment, for convenience of explanation, will be called heat sink body 31a and describe with the position that heat sink body portion 32 and the pedestal portion 33 of fin 31 form by LED illumination.
The difference of the embodiment shown in the embodiment shown in Fig. 8 and Fig. 6 is, forms LED illumination fin 31 with the stacked liner plate part 41 of mode of the rear side along the heat sink body 31a that comprises pedestal portion 33.This liner plate part 41 also with heat sink body 31a in the same manner, preferably use the metal panel of thermal conductivity and the aluminum having excellent moldability or aluminium alloy system to form, but also can use other metal panels such as copper to form.
The related LED illumination of this embodiment also processes to manufacture by impression with fin 31, can adopt enforcement once-forming manufacture the method for LED illumination fin 31 and implement twice shaping and manufacture any one in the method for fin 31 of LED illumination.
In the situation that implementing once-forming and manufacturing LED illumination fin 31, be made as and forming the state of metal panel of the stacked tangible one-tenth liner plate part 41 in the back side of metal panel of heat sink body 31a, manufactures LED and throw light on and use fin 31 by implement impression processing with the mould shown in Fig. 7.
In the situation that implementing twice shaping and manufacturing LED illumination fin 31, utilize the method shown in Fig. 7, first, after the heat sink body 31a that has been shaped, at the back side of heat sink body 31a, prop up and form the metal panel of liner plate part 41 and be again shaped in the mode of the recess 34 at the back side across pedestal portion 33.It should be noted that, in the situation that so implementing twice shaping, preferably, be configured as for the first time preliminary forming, be shaped and impressing processing for the second time.
LED of the present invention illumination can be Fig. 6 or as shown in Figure 8 simply tabular with fin 31, also can be processed as the various shapes of the form fit of heat sink body portion 32 and fin.The fin of burying illumination underground of fin, building etc. that in addition, this LED illumination can be thrown light on as the fin of LED bulb, vehicle LED with fin 31 etc., the illuminating fin of various LED.It should be noted that, in the present invention, the term of LED element is not limited to independent element, also comprises the surface that multiple elements is installed on to aluminium alloy plate etc.
Description of reference numerals is as follows:
1 ... LED illumination fin
2 ... LED element installed surface
3,4,5,6,7 ... heat radiation side
8 ... cascaded surface
9 ... top surface
10,11 ... peristome
31 ... LED illumination fin
31a ... heat sink body
32 ... heat sink body portion
33 ... pedestal portion
34 ... recess
35 ... metal panel
36 ... punch die
36a ... recess
37 ... drift
38 ... charge support
39 ... backing plate
40 ... cushion pins
41 ... liner plate part
L ... LED element
Claims (7)
1. a LED illumination fin, this LED illumination, is characterized in that by stretch process one and form continuously LED element installed surface and form with the continuous heat radiation side of this LED element installed surface on a sheet metal with fin,
Described LED illumination is formed as cylindrical body with fin, this cylindrical body is taking described LED element installed surface as top, taking described heat radiation side as body portion, and there is the peristome of the inner space being impaled by these faces, utilize the surperficial back side of described LED element installed surface and heat radiation side and there is continuously the radiating surface towards three-dimensional any direction.
2. LED illumination fin according to claim 1, wherein,
Described heat radiation side is formed as cylindric or square tube shape.
3. LED illumination fin according to claim 1, wherein,
Described sheet metal is that thickness of slab is the aluminum of scope or the thin plate of aluminium alloy system of 0.4mm～2mm.
4. a LED illumination fin, this LED illumination is formed by metal panel with fin, it is characterized in that,
The pedestal portion of the LED element installation use that described LED illumination bloats to face side by heat sink body portion with from described heat sink body portion with fin forms,
Described pedestal portion processes by impression and is integrally formed with described heat sink body portion.
5. a LED illumination fin, this LED illumination is formed by metal panel with fin, it is characterized in that,
The pedestal portion of the LED element installation use that described LED illumination bloats to face side by heat sink body portion with from described heat sink body portion with fin forms, and is laminated with liner plate part in the rear side of described pedestal portion,
Described pedestal portion processes by impression and is integrally formed with described heat sink body portion.
6. according to the LED illumination fin described in claim 4 or 5, wherein,
Described metal panel is aluminum or aluminium alloy system.
7. a manufacture method for fin for LED illumination, is characterized in that,
By metal panel being impressed to processing, integrally formed heat sink body portion and the LED element that bloats to face side from described heat sink body portion are installed the pedestal portion of use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610926113.3A CN106895378A (en) | 2011-12-07 | 2012-12-07 | LED illumination fin and its manufacture method |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-268049 | 2011-12-07 | ||
| JP2011268049A JP5608152B2 (en) | 2011-12-07 | 2011-12-07 | Heat sink for in-vehicle LED lighting |
| JP2011-285770 | 2011-12-27 | ||
| JP2011285770A JP5608154B2 (en) | 2011-12-27 | 2011-12-27 | Heat sink for LED lamp |
| PCT/JP2012/081769 WO2013085024A1 (en) | 2011-12-07 | 2012-12-07 | Led lighting heat sink and method for manufacturing same |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610926113.3A Division CN106895378A (en) | 2011-12-07 | 2012-12-07 | LED illumination fin and its manufacture method |
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| CN103917824B CN103917824B (en) | 2017-11-10 |
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| CN201280054494.0A Expired - Fee Related CN103917824B (en) | 2011-12-07 | 2012-12-07 | LED illumination fin and its manufacture method |
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| KR (1) | KR20140096345A (en) |
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| CN104378954A (en) * | 2014-10-13 | 2015-02-25 | 上海仪电数字技术有限公司 | Radiator of electronic device |
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| JP6439813B2 (en) * | 2017-02-24 | 2018-12-19 | マツダ株式会社 | Vehicle lighting |
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| WO2013085024A1 (en) | 2013-06-13 |
| CN106895378A (en) | 2017-06-27 |
| CN103917824B (en) | 2017-11-10 |
| KR20140096345A (en) | 2014-08-05 |
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