CN103697444A - LED (light emitting diode) light source heat radiator integral structure - Google Patents
LED (light emitting diode) light source heat radiator integral structure Download PDFInfo
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Abstract
The invention discloses an LED (light emitting diode) light source heat radiator integral structure, which comprises an LED integrated light source and a heat radiator, wherein the LED integrated light source is provided with an aluminum base plate, the heat radiator is provided with a cylindrical installing seat and a plurality of heat radiation fins, all of the heat radiation fins are vertically arranged on the outer side wall of the cylindrical installing seat at intervals, each heat radiation fin is integrally formed with the cylindrical installing seat, the upper end of the cylindrical installing seat is in a closed shape, the lower end of the cylindrical installing seat is in an open type hollow structure, the aluminum base plate and the lower end of the cylindrical installing seat are detachably installed in a tight matching way, and heat conducting liquid filling materials are filled in a hollow cavity of the cylindrical installing seat. The LED light source heat radiator integral structure has the beneficial effects that the heat conducting liquid filling materials are in direct contact with the LED integrated light source, and the direct contact area of the heat conducting liquid filling materials and the cylindrical installing seat is larger, so the heat radiation speed of the LED integrated light source is higher, the heat resistance is small, the junction temperature of an LED chip is effectively reduced, the goals of temperature uniforming and heat radiation can also be realized, and in addition, the air pumping treatment is not needed. The LED light source heat radiator integral structure has the advantages that the manufacturing is simple, the carrying is convenient, and the production cost is lower.
Description
Technical field
The present invention relates to a kind of LED light source, particularly a kind of and radiator is the LED light source of integral structure.
Background technology
As illuminating device LED of new generation, high because having light efficiency, the advantage such as cost is low, pollution-free, meets the theme of national energy-saving environmental protection, so be more and more subject to people's favor.But can produce a large amount of heats during LED light source work, make the temperature of chip of LED light source higher, and along with the increase of LED light source power, the temperature of chip can corresponding increasing, and the high temperature of chip can produce LED spectral red shift, light efficiency reduction, stress loss and the impact of degradation under the life-span.Therefore, the heat dissipation problem of LED light source is the first problem when solving of power-type LED illuminating lamp.
In order to solve the heat radiation of LED light source, occurred on the market a kind ofly by heat sink material, being made, the LED radiator matching with LED light source, though this LED radiator plays thermolysis to LED light source to a certain extent, but the heat sink material use amount of this kind of LED light source is large, cost is higher, simultaneously, LED light source and radiator are separate settings, in need to the space between LED light source and radiator when being assembled into whole lamp, fill heat-conducting silicone grease layer and carry out heat conduction, this not only makes complexity, and the contact-making surface between heat-conducting silicone grease and radiator is less, can make the thermal resistance of LED light source heat radiation larger, reduced the stability of LED light source work, even cause the temperature distributing disproportionation of LED light source chip even, cause the part LED on chip to lose efficacy because of overheated, now also have a kind of heat-pipe radiator for LED light source heat radiation, this kind of heat-pipe radiator need adopt expensive metallic copper preparation, also needs body to carry out vacuum pumping, has the shortcoming that cost of manufacture is high, and has the problems such as entrainment limit.
In view of this, the inventor furthers investigate above-mentioned defect, then in this case, produces.
Summary of the invention
The object of this invention is to provide a kind of LED light source radiator integrated structure, the LED light source in prior art to solve with radiating effect exists cost of manufacture high, makes complexity, and thermal-conduction resistance is large, the problems such as inhomogeneous, entrainment limit of dispelling the heat.
Technical scheme of the present invention is such: a kind of LED light source radiator integrated structure, comprise LED integrated optical source and radiator, this LED integrated optical source has aluminium base, this radiator has a column mount pad and some radiating fins, each radiating fin compartment of terrain is erected on the lateral wall of cylinder mount pad, and each radiating fin and column mount pad are one-body molded; It is closed form that above-mentioned column mount pad is its upper end, and lower end is ringent hollow structure, and the lower end tight fit of above-mentioned aluminium base and above-mentioned column mount pad is detachably installed together, and fills out and be filled with conductive fluid filler in the hollow chamber of above-mentioned column mount pad.
The coefficient of thermal expansion of above-mentioned aluminium base is identical with the coefficient of thermal expansion of above-mentioned radiator.
The seal washer of being located between above-mentioned aluminium base and above-mentioned column mount pad by pad between above-mentioned aluminium base and above-mentioned column mount pad seals.
Above-mentioned aluminium base and above-mentioned column mount pad are detachably installed together in the mode of mutually rotating, and on the bottom surface of above-mentioned aluminium base, are concaved with two cavitys that are oppositely arranged.
Above-mentioned aluminium base is flush-mounted in above-mentioned column mount pad, the end, lower end of above-mentioned column mount pad is provided with the extension diameter section that its external diameter is greater than above-mentioned column mount pad external diameter, between the lower end surface of above-mentioned extension diameter section and above-mentioned column mount pad, by connecting ring, link together, above-mentioned extension diameter section, above-mentioned connecting ring and above-mentioned column mount pad are one-body molded, above-mentioned aluminium base is removably flush-mounted in above-mentioned extension diameter section, and the upper surface of above-mentioned aluminium base and above-mentioned connecting ring fit.
The lateral wall of above-mentioned aluminium base is provided with external screw thread, and above-mentioned extension diameter section madial wall is provided with the internal thread being screwed with above-mentioned external screw thread, and above-mentioned seal washer pad is located between above-mentioned connecting ring and above-mentioned aluminium base.
The end, lower end of above-mentioned column mount pad is locked in above-mentioned aluminium base, on the lateral wall of above-mentioned column mount pad, convex with some lower position blocks, each above-mentioned lower position block along the circumferencial direction spacer ring of above-mentioned column mount pad around distribution, on the madial wall of above-mentioned aluminium base, convex with the some upper limit position blocks that are stacked at one by one respectively each above-mentioned lower position block top, and between two above-mentioned upper limit position blocks, there is the space that snaps in that snaps in and slide into above-mentioned upper limit position block below for above-mentioned lower position block.
On the upper surface of above-mentioned aluminium base, convex with several and the integrated heat radiation projection of above-mentioned aluminium base, each above-mentioned heat radiation projection along the circumferencial direction spacer ring of above-mentioned aluminium base around distribution.
In the hollow chamber of above-mentioned column mount pad, be provided with the bar shaped projection that some longitudinal directions along above-mentioned column mount pad extend, each above-mentioned bar shaped projection along the circumferencial direction spacer ring of above-mentioned column mount pad around distribution.
Above-mentioned conductive fluid filler is a kind of in water filler, alcohol filler and alcohol water blend filler, and above-mentioned conductive fluid filler is 80%-99% at the volume filling rate of above-mentioned column mount pad hollow chamber.
Adopt after technique scheme, a kind of LED light source radiator integrated structure of the present invention, because the column mount pad of radiator is hollow structure, aluminium base and column mount pad tight fit are detachably installed together, radiator and LED integrated optical source are formed an airtight chamber, and in this chamber, be filled with conductive fluid filler, like this, the amount of conductive fluid filler is more, and conductive fluid filler directly contacts with LED integrated optical source, the direct contact surface of conductive fluid filler and column mount pad is long-pending larger, make the work calories of LED integrated optical source directly be passed to rapidly radiator by conductive fluid, radiating rate is fast, thermal resistance is little, effectively reduce the junction temperature of LED chip, can also play the object of temperature uniforming heat radiation, and without evacuation processes is set, have advantages of and make simple and easy and be convenient for carrying, and radiator is hollow setting, making material is few, cost of manufacture is lower, meanwhile, aluminium base makes the work calories of LED integrated optical source also can, by being directly passed to radiator, further improve radiating rate with contacting of radiator.
Accompanying drawing explanation
Fig. 1 is fragmentary perspective cross sectional view of the present invention (omitting conductive fluid filler);
Fig. 2 is the top view of radiator in the present invention;
Fig. 3 is heat radiation approach schematic diagram of the present invention;
Fig. 4 is the three-dimensional exploded view of another structure of the present invention.
In figure:
The specific embodiment
LED light source radiator integrated structure of the present invention, as shown in Figure 1-2, comprise LED integrated optical source and radiator 1, this LED integrated optical source comprises aluminium base 2 and some LED chips, each LED chip is attached on the front of aluminium base 1, and be packaged together, the structure of this LED integrated optical source is identical with the structure of existing LED integrated optical source, the applicant is not repeated at this, this radiator 1 has a column mount pad 11 and some radiating fins 12, each radiating fin 12 compartment of terrains are erected on the lateral wall of cylinder mount pad 11, each radiating fin 12 is one-body molded with column mount pad 11.
Improvements of the present invention are: it is closed form that column mount pad 11 is its upper end, lower end is ringent hollow structure, the coefficient of thermal expansion of aluminium base 2 is identical with the coefficient of thermal expansion of radiator 1, this aluminium base 2 is detachably installed together in the mode of mutually rotating tightly with the lower end of column mount pad 11, and the seal washer 3 of being located between aluminium base 2 and column mount pad 11 by pad between aluminium base 2 and column mount pad 11 seals, this aluminium base 2 is flush-mounted in column mount pad 11, the end, lower end of column mount pad 11 is provided with the extension diameter section 111 that its external diameter is greater than above-mentioned column mount pad external diameter, between the lower end surface of extension diameter section 111 and column mount pad 11, by connecting ring 112, link together, extension diameter section 111, connecting ring 112 is one-body molded with column mount pad 11, the lateral wall of aluminium base 2 is provided with external screw thread 21, the madial wall of extension diameter section 111 is provided with the internal thread (not shown) that external screw thread 21 is screwed therewith, and the upper surface of aluminium base 2 and connecting ring 112 fit, seal washer 3 pads are located between connecting ring 112 and aluminium base 2, like this, by the cooperation of internal and external threads, can realize the detachable installation of aluminium base 2 and column mount pad 11, and seal by seal washer 3, make the hollow chamber of column mount pad 11 be an airtight chamber, in the hollow chamber of described column mount pad 11, be filled with conductive fluid filler 4, this conductive fluid filler 4 is water filler, a kind of in alcohol filler and alcohol water blend filler, conductive fluid filler 4 is 80%-99% at the volume filling rate of column mount pad 11 hollow chamber.
A kind of LED light source radiator integrated structure of the present invention, because the aluminium base 2 of LED integrated optical source forms and has an airtight hollow chamber with radiator 2, in this hollow chamber, be filled with conductive fluid filler 4, like this, conductive fluid filler 4 directly and the substrate contacts of LED integrated optical source, the heat of LED light source substrate is passed to the radiator of whole cavity by conductive fluid, then carry out cross-ventilation heat radiation, when the LED chip of LED integrated optical source is worked, approximately 75% electric energy conversion is heat energy, the gross calorific power Q of LED chip is passed to aluminium base 2 through the heat-conducting glue of LED integrated optical source, a part of heat Q1 of aluminium base 2 is by being passed to radiator 1 with contacting of conductive fluid filler 4, another part heat Q2 is by being passed to radiator 1 with direct contact of radiator 1, finally the radiating fin 12 by radiator 1 carries out cross-ventilation heat radiation, this hot transfer principle is similar to the electric current conduction principle in circuit, wherein the temperature difference is equivalent to the electrical potential difference in circuit, thermal resistance is equivalent to the resistance in circuit, the heat transmitting is equivalent to the electric current in circuit, concrete heat radiation approach as shown in Figure 3, as seen from the figure, wherein, Q is the total thermal power of LED integrated optical source, Q
1for contact the heat transmitting, Q with conductive fluid through substrate
2for contact the heat transmitting with radiator through substrate, T
4for the temperature of the substrate of LED integrated optical source, T
3for the temperature of conductive fluid filling liquid, T
2for the temperature of radiator column mount pad inwall, T
1for the temperature of radiating fin, T
0for environment temperature, h
1for the convection transfer rate of conductive fluid and substrate or radiator contact interface, h
0for the aerial convection transfer rate of radiating fin, A
11for the area that LED light source substrate contacts with conductive fluid, its thermal-convection resistance is 1/h
1a
11, A
12for the contact area of conductive fluid and radiator inwall, its thermal-convection resistance is 1/h
1a
12, A
0for the contact area of radiating fin and air, its thermal-convection resistance is 1/h
0a
0, R
1and R
2be respectively heat Q
1and Q
2transmission thermal resistance in the radiator of aluminum alloy materials, the experiment proved that, when the interior falling heat-transfer liquid of column mount pad 11 filler 4, the maximum temperature of aluminium base 2 is 97 ℃, and minimum temperature is 73 ℃, when column mount pad 11 interior during without conductive fluid filling liquid 4, the maximum temperature of aluminium base 2 is 124 ℃, minimum temperature is 95 ℃, hence one can see that, and the maximum temperature of the LED light source substrate of the interior falling heat-transfer liquid of column mount pad 11 filler 4 has reduced by 27 ℃ than the maximum temperature of the LED light source substrate without conductive fluid filler.
Beneficial effect of the present invention is as follows:
1, because of the hollow structure of column mount pad 11, conductive fluid filler 4 riddles in the hollow chamber of column mount pad 11, make the loading of conductive fluid filler 4 more, larger with the contact area of column mount pad 11, can rapidly the heat of aluminium base 2 be passed to radiating fin 12 places, there is thermal resistance little, effectively reduce the junction temperature of LED chip, and can play the object of temperature uniforming heat radiation;
2,, because of the hollow structure of column mount pad 11, make the making material of radiator less, and without evacuation processes, greatly reduce the cost of manufacture of radiator 1;
3, aluminium base makes aluminium base make the work calories of LED integrated optical source also can, by being directly passed to radiator, further improve radiating rate with contacting of radiator;
4, because conductive fluid filler is a kind of in water filler, alcohol filler and alcohol water blend filler, can further make the cost of manufacture of radiator low;
5, there is simple and easy, the easy to carry feature of making.
In the present invention, be concaved with two cavity (not shown)s that are oppositely arranged on the bottom surface of aluminium base 2, by this cavity, the person of being easy to use rotates aluminium base 2.
In the present invention, on the upper surface of this aluminium base 2, convex with several and the integrated heat radiation projection 22 of aluminium base 2, each projection 22 that dispels the heat along the circumferencial direction spacer ring of aluminium base 2 around distribution; The contact area that can increase aluminium base 2 and conductive fluid filler 4 by each heat radiation projection 22, further reduces thermal-convection resistance, and it is protruding to prevent that to a certain extent aluminium base from expanding.
In the present invention, in the hollow chamber of this column mount pad 11, be provided with the bar shaped projection 113 that some the longitudinal directions along column mount pad 11 extend, each bar shaped projection 113 along the circumferencial direction spacer ring of column mount pad 11 around distribution, like this, by each column mount pad 11, can increase the contact area of column mount pad 11 and conductive fluid filler 4, thereby reduce thermal-convection resistance.
In the present invention, column mount pad 11 also can link together by the mode of buckle with aluminium base 2, as shown in Figure 4, the end, lower end of this column mount pad 11 is locked in aluminium base 2, on the lateral wall of column mount pad 11, convex with some lower position blocks 114, each lower position block 114 along the circumferencial direction spacer ring of column mount pad 11 around distribution, on the madial wall of aluminium base 2, convex with the some upper limit position blocks 23 that are stacked at one by one respectively each lower position block 114 tops, and between two upper limit position blocks 23, have for lower position block 114, snap in and slide into upper limit position block 23 belows snap in space 100, by this, snap in space 100, upper limit position block 23 with can realize removably connecting of column mount pad 11 and aluminium base 2 coordinating of lower position block 114 threes.
Above-described embodiment and graphic and non-limiting product form of the present invention and style, suitable variation or modification that any person of an ordinary skill in the technical field does it, all should be considered as not departing from patent category of the present invention.
Claims (10)
1. a LED light source radiator integrated structure, comprise LED integrated optical source and radiator, this LED integrated optical source has aluminium base, this radiator has a column mount pad and some radiating fins, each radiating fin compartment of terrain is erected on the lateral wall of cylinder mount pad, and each radiating fin and column mount pad are one-body molded; It is characterized in that: it is closed form that above-mentioned column mount pad is its upper end, lower end is ringent hollow structure, the lower end tight fit of above-mentioned aluminium base and above-mentioned column mount pad is detachably installed together, and fills out and be filled with conductive fluid filler in the hollow chamber of above-mentioned column mount pad.
2. LED light source radiator integrated structure according to claim 1, is characterized in that: the coefficient of thermal expansion of above-mentioned aluminium base is identical with the coefficient of thermal expansion of above-mentioned radiator.
3. LED light source radiator integrated structure according to claim 1, is characterized in that: the seal washer of being located between above-mentioned aluminium base and above-mentioned column mount pad by pad between above-mentioned aluminium base and above-mentioned column mount pad seals.
4. LED light source radiator integrated structure according to claim 3, it is characterized in that: above-mentioned aluminium base and above-mentioned column mount pad are detachably installed together in the mode of mutually rotating, and on the bottom surface of above-mentioned aluminium base, be concaved with two cavitys that are oppositely arranged.
5. LED light source radiator integrated structure according to claim 4, it is characterized in that: above-mentioned aluminium base is flush-mounted in above-mentioned column mount pad, the end, lower end of above-mentioned column mount pad is provided with the extension diameter section that its external diameter is greater than above-mentioned column mount pad external diameter, between the lower end surface of above-mentioned extension diameter section and above-mentioned column mount pad, by connecting ring, link together, above-mentioned extension diameter section, above-mentioned connecting ring and above-mentioned column mount pad are one-body molded, above-mentioned aluminium base is removably flush-mounted in above-mentioned extension diameter section, and the upper surface of above-mentioned aluminium base and above-mentioned connecting ring fit.
6. LED light source radiator integrated structure according to claim 5, it is characterized in that: the lateral wall of above-mentioned aluminium base is provided with external screw thread, above-mentioned extension diameter section madial wall is provided with the internal thread being screwed with above-mentioned external screw thread, and above-mentioned seal washer pad is located between above-mentioned connecting ring and above-mentioned aluminium base.
7. LED light source radiator integrated structure according to claim 4, it is characterized in that: the end, lower end of above-mentioned column mount pad is locked in above-mentioned aluminium base, on the lateral wall of above-mentioned column mount pad, convex with some lower position blocks, each above-mentioned lower position block along the circumferencial direction spacer ring of above-mentioned column mount pad around distribution, on the madial wall of above-mentioned aluminium base, convex with the some upper limit position blocks that are stacked at one by one respectively each above-mentioned lower position block top, and between two above-mentioned upper limit position blocks, there is the space that snaps in that snaps in and slide into above-mentioned upper limit position block below for above-mentioned lower position block.
8. LED light source radiator integrated structure according to claim 1, it is characterized in that: on the upper surface of above-mentioned aluminium base, convex with several and the integrated heat radiation projection of above-mentioned aluminium base, each above-mentioned heat radiation projection along the circumferencial direction spacer ring of above-mentioned aluminium base around distribution.
9. LED light source radiator integrated structure according to claim 1, it is characterized in that: in the hollow chamber of above-mentioned column mount pad, be provided with the bar shaped projection that some longitudinal directions along above-mentioned column mount pad extend, each above-mentioned bar shaped projection along the circumferencial direction spacer ring of above-mentioned column mount pad around distribution.
10. LED light source radiator integrated structure according to claim 1, it is characterized in that: above-mentioned conductive fluid filler is a kind of in water filler, alcohol filler and alcohol water blend filler, above-mentioned conductive fluid filler is 80%-99% at the volume filling rate of above-mentioned column mount pad hollow chamber.
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| CN201310670582.XA CN103697444A (en) | 2013-12-10 | 2013-12-10 | LED (light emitting diode) light source heat radiator integral structure |
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| CN108716659A (en) * | 2018-06-09 | 2018-10-30 | 江苏泓睿德智能科技有限公司 | A kind of high-power LED lamp cooling device |
| CN108775566A (en) * | 2018-06-09 | 2018-11-09 | 江苏泓睿德智能科技有限公司 | A kind of LED lamp heat sink |
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Application publication date: 20140402 |