CN103629649A - Radiator and LED (light-emitting diode) lamp assembly - Google Patents
Radiator and LED (light-emitting diode) lamp assembly Download PDFInfo
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- CN103629649A CN103629649A CN201310704077.2A CN201310704077A CN103629649A CN 103629649 A CN103629649 A CN 103629649A CN 201310704077 A CN201310704077 A CN 201310704077A CN 103629649 A CN103629649 A CN 103629649A
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Abstract
The invention relates to a radiator and an LED (light-emitting diode) lamp assembly. The radiator comprises a radiator main body and at least one hot pipe, wherein the radiator main body is integrally formed by a high thermal-conductivity insulation engineering plastic, the at least one hot pipe is embedded into the radiator main body, and the radiator main body comprises a bottom plate; the bottom plate is vertically provided with main fins, the main fins are also respectively provided with a coated pipeline for coating of the hot pipe, and an evaporation section of the hot pipe is positioned on the bottom surface of the bottom plate; the main fins are connected with multiple fins which are arranged in an interval manner in parallel and are provided with ventilation openings, at lease one middle fin of the multiple fins which are arranged in parallel can keep the integral appearance, and the middle parts of the other fins are all provided with upward or outward involute slots; the LED lamp assembly comprises an LED light plate which is formed by a heat conduction base plate and is provided with an LED light source, and the radiator, and the hot pipe on the bottom surface of the radiator main body closely fits on the heat conduction base plate. According to the radiator and the LED lamp assembly provided by the invention, a heat dissipation property and the cost-saving property are achieved, and corrosion resistance and insulation requirements on the LED application project are met.
Description
Technical field
The present invention relates to radiator and LED lamp assembly, relate in particular in LED application project and carry out improved radiator and LED lamp assembly for heat dispersion.
Background technology
In LED application project, LED chip junction temperature should be controlled at certain scope with the interior life requirements that can make it reach engineering application.But because of its heat flow density very big, so heat dissipation problem has limited the lifting of LED lamp power aspect largely.
In great power LED application, have the scheme that adopts forced convection mode to dispel the heat, but need to separately add the pump or fan of wasted work, and pump or fan reliability of operation is not high, so abandoned by market.At present, the heat radiation of high-power array-type LED lamp is generally acknowledged take free convection mode as best.Under the technical thought of free convection, traditional radiator (module) generally adopts cast aluminium or the extruded aluminium radiating fin of various structures, more advanced is adopts heat pipe added metal radiating fin mode (because current manufacturing process there is no complete seamless contact that method meets other conducting-heat elements such as heat pipe and heat dissipation metal fin, so be still cautious use of on market, academia also deposits reservations to this series products).No matter the radiating module above-mentioned which kind of mode is made, its whole lamp weight is all overweight, and cost is high, and the security for street lamp is a kind of test (coastal typhoon weather easily makes street lamp drop, and occurs injuring by a crashing object the accidents such as pedestrian, vehicle) simultaneously.Secondly, at some particular application (as coastal area, marine naval vessel, navigation mark etc.), need radiating appliance for Corrosion Protection, in some special weather condition (as lightning accompanied by peals of thunder), to the insulating properties of outdoor heat radiator of high power LED street lamp, it is also a kind of test, so just had the heat radiation form of heat dissipation metal fin project to outsource plastics to occur (only locate the experimental stage, market there is no method and accepts) in the recent period, met reluctantly above requirement.Yet the radiator of these heat dissipation metal fin project to outsource plastics can not reduce the use amount of metal, be also that whole lamp weight cannot be controlled effectively, Cost Problems still cannot solve.
Summary of the invention
Above-mentioned deficiency based on prior art, for meeting the application requirements of LED application project, takes into account radiator temperature rise control criterion, effectively saves product cost simultaneously, then has proposition of the present invention.
The present invention is concrete adopts following technical scheme to realize:
A kind of radiator, by an integrated radiator body of high heat conductive insulating engineering plastics and the heat pipe of at least 1 that is embedded among radiator body, formed, radiator body comprises: a base plate, on base plate, be uprightly provided with main rib sheet, on main rib sheet, be also provided with for heat pipe being coated on to coated pipeline wherein, and the evaporator section of heat pipe is the bottom surface in base plate, on main rib sheet, connect the fin that a plurality of parallel interval arrange, on main rib sheet, have ventilating opening, the middle at least a slice that is wherein positioned at of a plurality of fins of parallel arranged keeps outside complete profile, the centre of remaining fin is all designed to have upwards and outside involute fluting.
Wherein preferred, heat pipe is 2, and main rib sheet is 2, is arranged in parallel and is located on base plate, be provided with respectively coated pipeline and come respectively 2 heat pipes to be coated on wherein, and ventilating opening is to be opened in symmetrically on 2 main rib sheets on 2 main rib sheets.
Wherein preferred, air vent is preferably offered to lower 1/3rd position of height between the evaporator section of heat pipe and condensation segment.
Wherein preferred, the preferred taper angle of slotting is outwards made as, is upwards 7 degree.
Wherein preferred, limit, top side and/or the outer side edges of the multi-disc fin in close two outsides are carried out tapering type design.
Wherein preferred, the profile of tapering type design is convergent circular arc profile.
The SCGMP008GPA6B product wherein preferred, high heat conductive insulating engineering plastics preferably adopt the Sino-Korean carbon element of SKC company to produce, base material is PA6.
A LED lamp assembly, comprises LED lamp plate and a radiator as above that a heat-conducting substrate that is provided with LED light source forms, and the heat pipe of the bottom surface of this radiator body is close to and is located on heat-conducting substrate.
Wherein preferred, the position of arranging of the LED light source on LED lamp plate is the position of evaporator section of heat pipe that is right against the bottom surface of radiator body.
Wherein preferred, coated with thermally conductive silicone grease is filled at the bottom surface of radiator body lower end and the heat-conducting substrate interval between being close to.
The technique effect of radiator of the present invention and LED lamp assembly is: not only take into account radiator temperature rise control criterion, and can effectively save product cost; Have advantages of lightweight, anticorrosion, insulation well, dispel the heat good, cost is low, can meet the application requirements of LED application project.
Accompanying drawing explanation
Fig. 1 is the explosive decomposition figure of each parts of the LED lamp assembly of one embodiment of the present of invention;
Fig. 2 is the perspective view (angle one) of this embodiment;
Fig. 3 is the perspective view (angle two) of this embodiment;
Fig. 4 is the perspective view (angle three) of this embodiment;
Fig. 5 is the perspective view (angle four) of this embodiment;
Fig. 6 is the side view of this embodiment;
Fig. 7 is the front view of this embodiment;
Fig. 8 is the top view of this embodiment;
Fig. 9 is the upward view of this embodiment;
Figure 10 is the cutaway view (A-A along Fig. 2 longitudinally cuts open) of embodiment;
Figure 11 is the cutaway view (B-B along Fig. 2 laterally cuts open) of embodiment.
The specific embodiment
The present invention is the heat radiation potentiality of following abundant excavation plastics and heat pipe, and by the technical thought of the two advantage stack, the embedded heat pipe of engineering plastics of employing high heat conductive insulating is made high-power array-type LED lamp and applied required radiator.Engineering plastics and heat pipe for high heat conductive insulating of the present invention is elaborated below.
High heat conductive insulating engineering plastics are comparatively emerging known existing macromolecular materials of a class of producing along with modern materials science technological progress.It can replace traditional aluminium, and to make radiator be undisputable fact, and it possesses following advantage: 1) density of heat-conducting plastic than aluminium light near half, therefore the plastic tank radiators quality of equal area of dissipation demand is about 1/2 of aluminium radiator; 2) plastic tank radiators can be processed with injection moulding, and its molding cycle will shorten 20%～50%; 3) with moulded heat-conductive insulated plastics radiator, can make the safety problem of non-isolated power supply be resolved.Yet because the progress of material science and technology is overnight non-, why high heat conductive insulating engineering plastics are known as " high heat conduction ", be with almost adiabatic pure plastics Comparatively speaking.In fact, developed at present and price can be its capacity of heat transmission of high heat conductive insulating engineering plastics (being about in 20W/ (m ﹒ K)) of accepting in market and compares an also poor nearly magnitude with Metal Phase.Therefore, as only, with the directly simple substitution of Al radiator of high heat conductive insulating engineering plastics, be also not content with the heat radiation requirement of the radiator in the large-scale high-capacity LED assemblies of a class such as LED street lamp at present, and be only suitable in indoor low-power LED lamp.
Heat pipe (heat pipe) is in George Ge Luofo (George Grover) of 1963 Nian You U.S. Los Alamos (Los Alamos) National Laboratories invention, rely on the phase transformation of the interior capillary structure of pipe and refrigeration filling to carry out transferring heat, its capacity of heat transmission surpasses at present all known metals (thermal conductivity factor surpass aluminium 2 more than the order of magnitude), is called as hot superconductor.Be usually used in the fields such as space flight, along with the reduction gradually of cost and the lifting of reliability, has been one of effective selection of radiator manufacturing (as the radiator of the cpu of notebook computer) before at present.Yet, as described in the background art, although it is good only to add by heat pipe the radiator heat radiation that heat dissipation metal fin configuration makes, exist following problem to evade: 1) Weight control; 2) resistance to corrosion; 3) insulating properties; 4) degree of combining closely of heat pipe and thermal component (certainly, existing heat pipe solves with the mode that thermal component directly welds at present, but complex process, and cost is too high).
For solving the weak point separately of above-mentioned high heat conductive insulating engineering plastics and heat pipe, the present invention proposes a kind of technical thought of introducing high heat conductive insulating engineering plastics on heat pipe basis, thereby also in heat conduction and structure, all with the embedded heat pipe of engineering plastics, substitutes the function of traditional metal fin completely.
Certainly, as previously mentioned, the heat conductivility of high heat conductive insulating engineering plastics cannot with Metal Phase ratio, therefore as cannot be creatively made full use of radiation and the surperficial Natural Heat Convection advantage of engineering plastics in structural design, and being aided with the superconduction capacity superiority of heat pipe, the form that only simply adopts the embedded heat pipe of engineering plastics is cannot reach the required heat radiation of high-power array-type LED lamp assembly to require.Therefore, the present invention must carry out novelty design to the structure of high heat conductive insulating engineering plastics, and by numerical simulation of optimum and dependence validation trial, makes every effort to can reach equally well or even better radiating effect.
Now the present invention is further described with the specific embodiment by reference to the accompanying drawings.
Consult shown in Fig. 1, it is the LED lamp assembly of a preferred embodiment of the present invention, the LED lamp assembly of this embodiment is by an integrated radiator body 1 of the high heat conductive insulating engineering plastics with certain structural design and be embedded in the radiator that the heat pipe 2 of among radiator body 1 at least 1 (this embodiment take 2 illustrate for example) forms, and by heat-conducting substrate (aluminium base or a ceramic substrate etc., this embodiment be take aluminium base as example explanation) 3 and the LED light source 4(that distributes of a plurality of arrays provided thereon as being furnished with the high-power LED chip that 6 power are 5-8W) the LED lamp plate that forms, and the heat pipe 2 of the bottom surface 101 of this radiator body 1 is close to and is located on heat-conducting substrate 3.Concrete, two heat pipes 2 in this embodiment are that to curve U-shaped (can be also similar U-shaped shape or other shapes, as Z-shaped etc.), the evaporator section of two heat pipes 2 (bringing-up section) the 21st, the bottom surface 101 in radiator body 1, and be close to heat-conducting substrate 3, its condensation segment (cooling section) the 22nd, embeds in radiator body 1.Preferably, thereby this radiator body 1 is to be formed two heat pipes 2 are wrapped in wherein completely by injection moulding by high heat conductive insulating engineering plastics, thereby forms the radiator of integral structure.Preferably, the bottom surface 101 of this radiator body 1 lower end and heat-conducting substrate 3 interval between being close to also can be filled coated with thermally conductive silicone grease air thermal resistance is eliminated, and is beneficial to heat conduction.In addition preferably, in order to make the heat on heat-conducting substrate 3 be unlikely to too to concentrate, the evaporator section 21 of two heat pipes 2 be symmetrically arranged in respectively LED light source 4 on heat-conducting substrate 3 over against position.It should be noted that, this LED lamp assembly, except above-mentioned radiator and LED lamp plate, can also additionally comprise miscellaneous part, as LED lay the grain lens, LED driving power etc., is routine techniques, launches no longer in detail explanation.
Like this, the radiator in this embodiment is because heat pipe 2 has the superpower capacity of heat transmission, and the heat that LED light source 4 produces reaches via heat-conducting substrate 3 after the evaporator section 21 of heat pipe 2, can cause rapidly condensation segment 22.Therefore, be coated with the heat how radiator body 1 of the high heat conductive insulating engineering plastics of heat pipe 2 to transmit heat pipe 2 and be promptly dissipated in the middle of surrounding environment, just become radiator of the present invention key problem to be solved.
For this reason, this case inventor takes full advantage of high heat conductive insulating engineering plastics material in to the structural design of this radiator body 1, and in NATURAL CONVECTION COEFFICIENT OF HEAT, (surface roughness of engineering plastics is greater than smooth metal, so than metal surface, air is done in free convection flow process on its surface, the thickness of laminar boundary layer is thinner, also the thermal resistance being formed by laminar boundary layer is less) and radiance aspect be better than the advantage of conventional aluminium metal, form the structural design of following several novelties, consult shown in Fig. 2-Figure 11 simultaneously:
1) on two main rib sheets 13 of radiator body 1 both sides, symmetry has ventilating opening 15(and can consult Fig. 4, Fig. 6), after two row's the offering of ventilating openings 15 on main rib sheet 13, can strengthen natural convection air, thereby improve radiating effect.Preferably, this case inventor also take radiator top air velocity be to the maximum optimization aim (because of at radiator height in definite value situation, flow velocity is maximum herein, can illustrate that free convection effect is best, so-called " chimney " aspirates principle), through a large amount of numerical simulations with after constantly testing, inventor finds that air vent 15 is opened to lower 1/3rd position to height between the evaporator section 21 of heat pipe 2 and condensation segment 22, and (laterally U-shaped horizontal line section bottom rises towards the direction of the horizontal line section of the top, by the position between horizontal line Duan Zhisan/mono-At The Height bottom) time, can obtain radiator top air velocity maximizes.
2) for example, because engineering plastics (the SCGMP008GPA6B product that the Sino-Korean carbon element of SKC company produces that radiator body 1 adopts, base material is PA6) emissivity generally can reach 0.8, in the situation that total area of dissipation is enough, the present invention adopts the fin shape design that is different from existing metal heat sink, with it, brings into play to greatest extent its radianting capacity (raising RADIATION ANGLE COEFFICIENT).Follow this thinking, first, the middle at least a slice (embodiment be take three as example explanation) that is wherein positioned at of a plurality of fins 12 of the parallel arranged of radiator body 1 keeps outside complete profile, the centre of remaining fin 12 is all designed to have upwards and outside involute fluting 1201(can consult Fig. 2, Fig. 3, Fig. 5, Fig. 7, Fig. 8, depression angle); Secondly, the limit, top side 1202 of the multi-disc in close two outsides (embodiment be take each five as example explanation) fin 12 forms together circular arc symmetrical tapered profile and (consults Fig. 4, Fig. 6, the limit, top side 1301 of the main rib sheet 13 side-looking angle), being attached thereto is also the circular arc (consulting Fig. 6, Figure 10) of same radian; Finally, the outer side edges 1203 of the multi-disc in close two outsides (embodiment be take each six as example explanation) fin 12 forms circular arc convergent profile (consulting Fig. 2, Fig. 3, Fig. 8, depression angle) together.Preferably, for taking into account attractive in appearance and assembly space requirement, this embodiment is made as R100(unit by right lateral two the convergent circular arcs in a left side for the both sides of radiator body 1: mm).
Like this, this radiator body 1 can be by the outside involute fluting 1201 that offer near the fin 12 in outside, two ends and outside radiations heat energy at the fin 12 in centre position, thereby avoid the heat between adjacent fins 12 reflect back and forth and be difficult for outwards distributing (not offering in fluting 1201 situations), can improve like this heat radiation of the radiator body 1 that adopts high heat conductive insulating engineering plastics material.Meanwhile, the fluting 1201 of offering on fin 12 is equivalent to also increase opening, makes flow channel unimpeded, is also beneficial to enhancing natural convection air.
In this embodiment, inventor is through a large amount of numerical simulations with constantly after test, finds the taper angle of the fluting of a plurality of fins 12 1201 to be outwards made as, to be upwards 7 while spending, best results.The heat that this embodiment can meet LED light source is after tested no more than the requirement of 45 ℃ to environment temperature rise.
And, on this basis, also in limit, top side 1202 and the outer side edges 1203 of fin 12, carry out tapering type design, thereby fin adjacent one another are 12 all can exist exposed parts (upper side edge and outer side edges all have not lap), thereby be further beneficial to the outside heat radiation of fin 12 that adopts high heat conductive insulating engineering plastics material.
Certain, in the design of the fin 12 of this embodiment, the design of offering outside involute fluting 1201 is the most important, and limit, top side 1202 and outer side edges 1203 are carried out tapering type design can play the thermal-radiating effect of enhancing.Certain, limit, top side 1202 and outer side edges 1203 are carried out tapering type design can only adopt one of them.In addition, supplementary notes, if do not affected in formed in mould situation, make the outer side edges of each fin 12 1203 into arc-shaped side edges by straight sided and also will promote thermal radiation effect.
Conclude above-mentioned, the radiator body 1 of this embodiment is the structure of high heat conductive insulating engineering plastics one-body molded (as injection mo(u)lding), specifically: comprise a base plate 11, 2 main rib sheet 13(that are arranged in parallel are uprightly set corresponding with 2 heat pipes 2 of this embodiment on base plate), on 2 main rib sheets 13, be also respectively equipped with for heat pipe 2 being coated on to coated pipeline 14 wherein, the coated profile of pipeline 14 and the shape of its coated heat pipe adapt (if the coated pipeline 14 of embodiment is U-shapeds), and the evaporator section 21 of heat pipe 2 is the bottom surfaces in base plate 11, on these two main rib sheets 13, connect the fin 12 that a plurality of parallel interval (preferably equidistant) arrange.Wherein, on these two main rib sheets 13, symmetry has ventilating opening 15, and this air vent 15 is preferably offered lower 1/3rd the position to height between the evaporator section 21 of heat pipe 2 and condensation segment 22; The middle at least a slice that is wherein positioned at of a plurality of fins 12 of the parallel arranged of this radiator body 1 keeps outside complete profile, the centre of remaining fin 12 is all designed to have upwards and outside involute fluting 1201, and the preferred taper angle of this fluting 1201 is outwards made as, is upwards 7 degree; And further, limit, top side 1202 and/or the outer side edges 1203 of the multi-disc in close two outsides (embodiment be take each six as example explanation) fin 12 are carried out tapering type design.
Radiator in the LED lamp assembly of this embodiment is via the design of above two aspects, the value added of the radiant heat flux of engineering plastics radiator surpasses 5%, because opening increases, flow channel is unimpeded, heat convection flow kept in balance (error <1%) simultaneously.In addition, the weight of engineering plastics also alleviates to a certain extent to some extent, provides cost savings.The outer surface of the coated heat pipe structure of high heat conductive insulating engineering plastics of the radiator of this embodiment is engineering plastics, has advantages of corrosion-resistant and insulation; And integral body be take high heat conductive insulating engineering plastics as main, and weight is compared existing metal heat sink, has advantages of that gross weight is less.
The above embodiments are that the LED lamp assembly with an embodiment describes.In the LED lamp assembly of the above embodiments, radiator can be used as an independent radiator and uses, thereby for the different LED lamp panel structure of other LED lamp assemblies.Therefore, another object of the present invention is to propose a kind of radiator, and the concrete structure of this radiator is as mentioned above, and this radiator can be in LED assembly, for LED light source is carried out to good heat radiating.
Although specifically show and introduced the present invention in conjunction with preferred embodiment; but those skilled in the art should be understood that; within not departing from the spirit and scope of the present invention that appended claims limits; can make a variety of changes the present invention in the form and details, be protection scope of the present invention.
Claims (10)
1. a radiator, by an integrated radiator body of high heat conductive insulating engineering plastics and the heat pipe of at least 1 that is embedded among radiator body, formed, radiator body comprises: a base plate, on base plate, be uprightly provided with main rib sheet, on main rib sheet, be also provided with for heat pipe being coated on to coated pipeline wherein, and the evaporator section of heat pipe is the bottom surface in base plate, on main rib sheet, connect the fin that a plurality of parallel interval arrange, on main rib sheet, have ventilating opening, the middle at least a slice that is wherein positioned at of a plurality of fins of parallel arranged keeps outside complete profile, the centre of remaining fin is all designed to have upwards and outside involute fluting.
2. radiator according to claim 1, it is characterized in that: heat pipe is 2, and main rib sheet is 2, is arranged in parallel and is located on base plate, on 2 main rib sheets, be provided with respectively coated pipeline and come respectively 2 heat pipes to be coated on wherein, and ventilating opening is to be opened in symmetrically on 2 main rib sheets.
3. radiator according to claim 2, is characterized in that: air vent is preferably offered lower 1/3rd the position to height between the evaporator section of heat pipe and condensation segment.
4. radiator according to claim 3, is characterized in that: the preferred taper angle of slotting is outwards made as, is upwards 7 degree.
5. according to the radiator described in claim 2 or 3 or 4, it is characterized in that: limit, top side and/or the outer side edges of the multi-disc fin in close two outsides are carried out tapering type design.
6. radiator according to claim 5, is characterized in that: the profile of tapering type design is convergent circular arc profile.
7. radiator according to claim 1, is characterized in that: the SCGMP008GPA6B product that high heat conductive insulating engineering plastics preferably adopt the Sino-Korean carbon element of SKC company to produce, base material is PA6.
8. a LED lamp assembly, comprise: LED lamp plate and a radiator that is provided with the heat-conducting substrate formation of LED light source, radiator is as radiator arbitrary in the claims 1-7, and the heat pipe of the bottom surface of this radiator body is close to and is located on heat-conducting substrate.
9. LED lamp assembly according to claim 8, is characterized in that: the position of arranging of the LED light source on LED lamp plate is the position of evaporator section of heat pipe that is right against the bottom surface of radiator body.
10. LED lamp assembly according to claim 9, is characterized in that: coated with thermally conductive silicone grease is filled at the bottom surface of radiator body lower end and the heat-conducting substrate interval between being close to.
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| CN201310704077.2A CN103629649B (en) | 2013-12-19 | 2013-12-19 | Radiator and led lamp component |
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| CN201310704077.2A CN103629649B (en) | 2013-12-19 | 2013-12-19 | Radiator and led lamp component |
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| CN104373843A (en) * | 2014-11-06 | 2015-02-25 | 广东昭信照明科技有限公司 | Led lamp |
| CN104968179A (en) * | 2015-04-22 | 2015-10-07 | 惠州智科实业有限公司 | Insert injection molding radiator and preparation technology thereof |
| CN105387435A (en) * | 2015-11-23 | 2016-03-09 | 广东昭信照明科技有限公司 | Radiator with LED light source module and LED lighting equipment |
| CN106594627A (en) * | 2016-12-30 | 2017-04-26 | 乐健科技（珠海）有限公司 | LED (Light-emitting Diode) automobile light and preparation method thereof |
| CN106793670A (en) * | 2015-11-24 | 2017-05-31 | 吴江市旭威电子科技有限公司 | Heat radiator of electronic element |
| CN110375282A (en) * | 2019-08-15 | 2019-10-25 | 广州融捷照明科技有限公司 | A kind of plastic tank radiators LED street lamp mould group and its manufacturing method |
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Cited By (7)
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| CN105387435A (en) * | 2015-11-23 | 2016-03-09 | 广东昭信照明科技有限公司 | Radiator with LED light source module and LED lighting equipment |
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| CN106594627A (en) * | 2016-12-30 | 2017-04-26 | 乐健科技（珠海）有限公司 | LED (Light-emitting Diode) automobile light and preparation method thereof |
| CN110375282A (en) * | 2019-08-15 | 2019-10-25 | 广州融捷照明科技有限公司 | A kind of plastic tank radiators LED street lamp mould group and its manufacturing method |
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| Publication number | Publication date |
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| CN103629649B (en) | 2016-08-31 |
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