CN102261629B - Box type heat sink and cold-box heat sink - Google Patents
Box type heat sink and cold-box heat sink Download PDFInfo
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- CN102261629B CN102261629B CN201110205730.1A CN201110205730A CN102261629B CN 102261629 B CN102261629 B CN 102261629B CN 201110205730 A CN201110205730 A CN 201110205730A CN 102261629 B CN102261629 B CN 102261629B
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- dissipating cover
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- heat abstractor
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Abstract
The invention relates to the LED (Light-Emitting Diode) lighting field, which discloses a box type heat sink and a cold-box heat sink. In the invention, the box type heat sink is composed of two radiating covers locked to each other; the upper and lower closed planes 2 of the box type heat sink both can be used for contacting and attaching heating elements, thereby functioning in cooling the elements; besides, the air inlet channel and the air outlet channel of a fan 3 mounted inside the cold-box heat sink are internal fin-like flow guiding radiating fins 4 inside the cold-box heat sink; and inflow air 5 and outflow air 6 both are subjected to heat exchanger via the radiating fins and the cold-box heat sink; therefore, the heat dissipation effect is twice as high as that of the existing heat dissipation technology in a single-direction cooling manner of blowing air only by the fan.
Description
Technical field
The present invention relates to LED lighting field, particularly the heat dissipation technology in LED lighting device.
Background technology
LED(light emitting diode) in lighting device for element being carried out to cooling traditional heat-dissipating method, be all closely mount a kind of outer surface complexity at the element surface that requires cooling conduct the made radiator causing of good material by heat.The contact area of utilizing radiator to increase element and air improves the heat exchanger effectiveness between loses heat element and air, to reach the effect of cooling.
But, this passive heat dissipating method, its radiating efficiency depends on the temperature difference of radiator and surrounding air, the flow regime of air, the area of radiator and form.Prior art has adopted the area design of Various Complex, carry out increasing heat radiation area (if Granted publication number is the patent of 301280887S), but want larger power component to dispel the heat, the size of heat dissipation element will be very large, can not meet under many circumstances application requirements.Especially in LED light source application aspect, require ten watts or tens watts often of the element power of being dispelled the heat, but the size of light source itself is limited again, Here it is prior art bottleneck that LED bulb power is restricted.
The method of another kind of radiating and cooling is the active cooling method that adopts fan to accelerate gas flow.This cool-down method all has generally application in LED light source and luggable computer.Next cooling with fan, to utilize equally fin to carry out heat exchange, although the area of this fin can be much smaller, add the installation of fan, still can not be applied in the bulb of most of volume compacts.The prior art (specifically asking for an interview notification number is patent and the CN 101858505A of CN 101986008 A) of up-to-date outstanding compact heat sink arrangement.But, in this scheme, still there is following shortcoming:
Because radiator side is used for cooling heating element often, the inlet and outlet of radiator all can only be arranged in the identical another side of radiator or neighbouring inlet and outlet.In same side or adjacent very near into and out of the distance between air port, positive counterblast is in one side, the hot-air heating mixes with cool ambient air after discharging, within can again being sucked radiator from air inlet greatly, form a waste and old gas thermal cycle, thereby reduced the radiating efficiency of radiator.In order to make gas and radiator that fan blows out have sufficient heat exchange, will make the air in radiator have enough circulation length, air-out and air inlet at fan all arrange a circulation passage, and radiator just needs certain altitude, is difficult to meet compactedness requirement.
Summary of the invention
The object of the present invention is to provide a kind of box type heat abstractor and cold box heat abstractor, greatly improved radiating efficiency, fully meet the application requirements of LED light source, ensured the application scenarios of LED light source.
For solving the problems of the technologies described above, embodiments of the present invention provide a kind of box type heat abstractor, comprise: two dissipating cover 1a and 1b, be placed in the fan 3 of described dissipating cover inside;
Wherein, described dissipating cover 1a and dissipating cover 1b can fasten mutually, are the box type of platypelloid type after fastening, described dissipating cover 1a and the dissipating cover 1b symmetry that is inverted up and down, and the section at described dissipating cover 1a and dissipating cover 1b fastening place is stepped; The upper and lower surface 2 of described box type heat abstractor is closure plane, be box type heat abstractor ventilating opening around the surrounding of upper and lower closure plane, the ventilating opening 7a that wherein occupies described heat abstractor ventilating opening periphery half is the air intake surface 5 for air intake, and the ventilating opening 7b of second half periphery is the outlet air surface 6 for air-out; The inside of described dissipating cover 1a and dissipating cover 1b is also provided with and prevents that the air intake of fan from producing the air-flow mixing every face 8 with air-out, and described air-flow is formed by the stepped section of described dissipating cover 1a and dissipating cover 1b every face 8.
Embodiments of the present invention also provide a kind of cold box heat abstractor, comprise: two dissipating cover 11a and 11b, built-in fans 13;
Wherein, described dissipating cover 11a and dissipating cover 11b can fasten mutually, and flat board 12 and positioned vertical that described dissipating cover 11a and dissipating cover 11b have fan accommodating hole by centre form in the fin-shaped flow-guiding radiation sheet 14 of upper lower plane;
Described flow-guiding radiation sheet 14 external edge are along coincideing with described dull and stereotyped 12 plane parallel or with the element surface state being cooled;
Described cold box heat abstractor is combined with the parts surface that is cooled, and after this cold box heat abstractor top is closed, the gas channel that flow-guiding radiation sheet 14 on each dissipating cover forms leads to surrounding blow vent 17a and the 17b of described cold box heat abstractor, and occupies the half of periphery area; The half of periphery area is the air intake surface 15 for air intake, and second half is the outlet air surface 16 for air-out;
Accommodating described fan 13 in the middle of described cold box heat abstractor, the flow-guiding radiation sheet 14 in described air intake surface 15 and described outlet air surface 16 both sides is isolated the air intake of fan and air-out respectively, and the periphery outlet of half separately of respectively air-flow being led;
Wherein, described dissipating cover 11a and the dissipating cover 11b symmetry that is inverted up and down, and the section at described dissipating cover 11a and dissipating cover 11b fastening place is stepped; The inside of described dissipating cover 11a and dissipating cover 11b is also provided with and prevents that the air intake of fan from producing the air-flow mixing every face 18 with air-out, and described air-flow is formed by the stepped section of described dissipating cover 11a and dissipating cover 11b every face 18.
In terms of existing technologies, by two dissipating cover group boxing heat abstractors that mutually fasten, two closure plane 2 up and down of this box type heat abstractor may be used to contact and are placed with heater element embodiment of the present invention, and element is played to cooling effect.And, the air intake passage and the air-out passage that are placed in the fan 3 of cold box heat sink interior are exactly the fin-shaped flow-guiding radiation sheet 4 of cold box heat sink interior, the air of inflow 5 and outflow 6 is all by fin and cold box heat abstractor, produce heat exchange, therefore radiating effect is than only doubling by the cooling existing heat dissipation technology of one direction of fan blowing.
In addition, air inlet 5 and air outlet 6 two different positions in cold box heat abstractor periphery completely, the gas circulation of air intake 5 and air outlet 6 is in consecutive identical flow direction, and the mixing that can not produce gas refluxes, and has further ensured radiating effect.
In addition, the leaf formula fan that fan 3 is flat pattern for external form, by utilizing the opening of horizontal gas and flat fan combination, makes the combination of whole radiator highly compact.This is highly very little, has saved installing space, goes for LED light source and carries out coolingly, has solved the powerful technical bottleneck of LED lamp.
Brief description of the drawings
Fig. 1 is the box type heat abstractor overall structure schematic diagram according to first embodiment of the invention;
Fig. 2 is the box type heat abstractor decomposition texture schematic diagram according to first embodiment of the invention;
Fig. 3 be according to the dissipating cover in first embodiment of the invention accommodating the structural representation of half fan;
Fig. 4 is that the one in LED illumination is specifically applied schematic diagram according to the box type heat abstractor of first embodiment of the invention;
Fig. 5 is the cold box heat abstractor overall structure schematic diagram according to second embodiment of the invention;
Fig. 6 is the cold box heat abstractor decomposition texture schematic diagram according to second embodiment of the invention.
Detailed description of the invention
The first embodiment of the present invention relates to a kind of box type heat abstractor.As shown in Figure 1, this box type heat abstractor comprises: two dissipating cover 1a and 1b, be placed in dissipating cover inside fan 3(as shown in Figure 2).Wherein, dissipating cover 1a and dissipating cover 1b can fasten mutually, are the box type of platypelloid type after fastening, dissipating cover 1a and the dissipating cover 1b symmetry that is inverted up and down, and the section at described dissipating cover 1a and dissipating cover 1b fastening place is stepped; The upper and lower surface 2 of this box type heat abstractor is closure plane, be box type heat abstractor ventilating opening around the surrounding of upper and lower closure plane, the ventilating opening 7a that wherein occupies heat abstractor ventilating opening periphery half is the air intake surface 5 for air intake, and the ventilating opening 7b of second half periphery is the outlet air surface 6 for air-out.
Specifically, the closure plane up and down of box type heat abstractor is the form matching with the element surface being cooled, and that is to say, upper and lower two sides 2 are all sealed and can be placed with heater element for contact, so that element is played to cooling effect.Dissipating cover 1a and dissipating cover 1b adopt fixture to fasten, to ensure both combining closely; Contact edge when dissipating cover 1a and dissipating cover 1b fasten is mutually along adopting engagement design, effectively to improve its heat conduction.
Inside the closure plane up and down of box type heat abstractor and between fan 3, be provided with the fin-shaped flow-guiding radiation sheet 4 perpendicular to end face.Wherein part flow-guiding radiation sheet 4 is in a side of described outlet air surface 6, the side of the flow-guiding radiation sheet 4 of remainder in air intake surface 5.Form gas channel in the flow-guiding radiation sheet 4 of this air intake surface 5 and outlet air surface 6 respectively, the inlet and outlet of gas channel guiding fan, gas channel is communicated to respectively the each half ventilating opening in case radiator surrounding.Every flow-guiding radiation sheet 4 all leaves the space of accommodating half fan 3.
Because air intake passage and the air-out passage of the fan 3 that is placed in heat sink interior are exactly the fin 4 of heat sink interior, the air flowing into and flow out is all by fin and heat abstractor, produce heat exchange, therefore radiating effect is than only doubling by the cooling prior art of one direction of fan blowing.
In addition, the inside of dissipating cover 1a and dissipating cover 1b is also provided with and prevents that the air intake of fan from producing the air-flow mixing every face 8 with air-out, and air-flow is formed by the stepped section of described dissipating cover 1a and dissipating cover 1b every face 8, as shown in Figure 3.Because air inlet 5 and air outlet 6 is completely in two of heat abstractor different positions, gas circulation is in consecutive identical flow direction, and the mixing that can not produce gas refluxes.
It is worth mentioning that the leaf formula fan that the fan 3 in present embodiment is flat pattern for external form.Utilize the opening of horizontal gas and flat fan combination, can make the combination of whole radiator highly compact.This is highly very little, has saved installing space, goes for LED light source and carries out coolingly, has solved the powerful technical bottleneck of LED lamp.
In addition, dissipating cover 1a and dissipating cover 1b are provided with the installation screw 9 for the element that is fixedly cooled is installed, and this installation screw 9 not only can be fixed for the installation of cooling element, also can reinforce the combination of two dissipating covers.And two dissipating covers can be that copper or the good material of other heat conductivilitys are made with aluminium.
The concrete application of the one of the box type heat abstractor of present embodiment in LED illumination as shown in Figure 4, forms after being fastened by two dissipating covers.Near LED chip behind, the other end contacts with electronic circuit board in one end, and there is heat conductive insulating layer centre.After fan work, wind is inhaled into from a section of the side of case radiator, behind inner ventilation road, is discharged from, thereby LED chip dispel the heat with cooling from another section of opposition.
The second embodiment of the present invention relates to a kind of cold box heat abstractor, concrete structure as shown in Figure 5, this cold box heat abstractor comprises: two dissipating cover 11a and 11b, built-in fans 13, this built-in fans 13 is placed in the centre of this cold box heat abstractor, as shown in Figure 6.Dissipating cover 11a and the dissipating cover 11b symmetry that is inverted up and down, and the section at described dissipating cover 11a and dissipating cover 11b fastening place is stepped, and this fan 13 can be the leaf formula fan that external form is flat pattern.
Wherein, dissipating cover 11a and dissipating cover 11b can fasten mutually, and flat board 12 and positioned vertical that dissipating cover 11a and dissipating cover 11b have fan accommodating hole by centre form in the fin-shaped flow-guiding radiation sheet 14 of upper lower plane, as shown in Figure 6.Flow-guiding radiation sheet 14 external edge are along coincideing with the plane parallel of flat board 12 or with the element surface state being cooled.
This cold box heat abstractor is combined with the parts surface that is cooled, and after this cold box heat abstractor top is closed, the gas channel that flow-guiding radiation sheet 14 on each dissipating cover forms leads to surrounding blow vent 17a and the 17b of this cold box heat abstractor, and occupies the half of periphery area; The half of periphery area is the air intake surface 15 for air intake, and second half is the outlet air surface 16 for air-out.Flow-guiding radiation sheet 14 in air intake surface 15 and outlet air surface 16 both sides is isolated the air intake of fan and air-out respectively, and the periphery outlet of half separately of respectively air-flow being led.Be not difficult to find, when two dissipating covers fasten, two mutual close contacts of plane, middle accommodating fan 13, fan air intake/outtake surface and radiator plane parallel.In addition, the inside of dissipating cover 11a and dissipating cover 11b is also provided with and prevents that the air intake of fan from producing the air-flow mixing every face 18 with air-out, and this air-flow is formed by the stepped section of dissipating cover 11a and dissipating cover 11b every face 18.
Wherein, dissipating cover 11a and dissipating cover 11b can adopt fixture to fasten; Dissipating cover 11a and dissipating cover 11b are provided with the installation screw 19 for the element that is fixedly cooled is installed, and this installation screw 19 not only can be fixed for the installation of cooling element, also can reinforce the combination of two dissipating covers.And two dissipating covers can be that copper or the good material of other heat conductivilitys are made with aluminium.
The respective embodiments described above are to realize specific embodiments of the invention, and in actual applications, can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (14)
1. a box type heat abstractor, is characterized in that, comprises: the first dissipating cover (1a) and the second dissipating cover (1b), be placed in the fan (3) of described dissipating cover inside;
Wherein, described the first dissipating cover (1a) and the second dissipating cover (1b) can fasten mutually, after fastening, be the box type of platypelloid type, described the first dissipating cover (1a) and the second dissipating cover (1b) symmetry that is inverted up and down, and the section at described the first dissipating cover (1a) and the second dissipating cover (1b) fastening place is stepped; The upper and lower surface (2) of described box type heat abstractor is closure plane, be box type heat abstractor ventilating opening around the surrounding of upper and lower closure plane, the ventilating opening (7a) that wherein occupies described heat abstractor ventilating opening periphery half is the air intake surface (5) for air intake, and the ventilating opening (7b) of second half periphery is the outlet air surface (6) for air-out;
The inside of described the first dissipating cover (1a) and the second dissipating cover (1b) is also provided with and prevents that the air intake of fan from producing the air-flow mixing every face (8) with air-out, and described air-flow is formed by the stepped section of described the first dissipating cover (1a) and the second dissipating cover (1b) every face (8).
2. box type heat abstractor according to claim 1, is characterized in that, the closure plane up and down of described box type heat abstractor is the form matching with the element surface being cooled.
3. box type heat abstractor according to claim 1, is characterized in that, inside the closure plane up and down of described box type heat abstractor and between described fan (3), is provided with the fin-shaped flow-guiding radiation sheet (4) perpendicular to end face; Wherein part flow-guiding radiation sheet (4) is in a side of described outlet air surface (6), the side of the flow-guiding radiation sheet (4) of remainder in described air intake surface (5);
Flow-guiding radiation sheet (4) in described air intake surface (5) and outlet air surface (6) forms gas channel respectively, the inlet and outlet of described gas channel guiding fan, and gas channel is communicated to respectively the each half ventilating opening in described box type heat abstractor surrounding.
4. box type heat abstractor according to claim 3, is characterized in that, every described flow-guiding radiation sheet (4) all leaves the space of fan described in accommodating half (3).
5. according to the box type heat abstractor described in any one in claim 1 to 4, it is characterized in that, described the first dissipating cover (1a) and the second dissipating cover (1b) adopt fixture to fasten.
6. according to the box type heat abstractor described in any one in claim 1 to 4, it is characterized in that, contact edge when described the first dissipating cover (1a) and the second dissipating cover (1b) fasten is mutually along adopting engagement design.
7. according to the box type heat abstractor described in any one in claim 1 to 4, it is characterized in that, described the first dissipating cover (1a) and the second dissipating cover (1b) are provided with the installation screw (9) for the element that is fixedly cooled is installed.
8. according to the box type heat abstractor described in any one in claim 1 to 4, it is characterized in that, described the first dissipating cover (1a) and the second dissipating cover (1b) are made up of following arbitrary material:
Aluminium, copper, kirsite, heat-conducting plastic.
9. according to the box type heat abstractor described in any one in claim 1 to 4, it is characterized in that the leaf formula fan that described fan (3) is flat pattern for external form.
10. a cold box heat abstractor, is characterized in that, comprises: the first dissipating cover (11a) and the second dissipating cover (11b), built-in fans (13);
Wherein, described the first dissipating cover (11a) and the second dissipating cover (11b) can fasten mutually, and flat board (12) and positioned vertical that described the first dissipating cover (11a) and the second dissipating cover (11b) have fan accommodating hole by centre form in the fin-shaped flow-guiding radiation sheet (14) of upper lower plane;
Described flow-guiding radiation sheet (14) external edge is along coincideing with the plane parallel of described flat board (12) or with the element surface state being cooled;
Described cold box heat abstractor is combined with the parts surface that is cooled, and after this cold box heat abstractor top is closed, the gas channel that flow-guiding radiation sheet (14) on each dissipating cover forms leads to the surrounding blow vent (17a and 17b) of described cold box heat abstractor, and occupies the half of periphery area; The half of periphery area is the air intake surface (15) for air intake, and second half is the outlet air surface (16) for air-out;
Accommodating described fan (13) in the middle of described cold box heat abstractor, flow-guiding radiation sheet (14) in described air intake surface (15) and described outlet air surface (16) both sides is isolated the air intake of fan and air-out respectively, and the periphery outlet of half separately of respectively air-flow being led;
Wherein, described the first dissipating cover (11a) and the second dissipating cover (11b) symmetry that is inverted up and down, and the section at described the first dissipating cover (11a) and the second dissipating cover (11b) fastening place is stepped; The inside of described the first dissipating cover (11a) and the second dissipating cover (11b) is also provided with and prevents that the air intake of fan from producing the air-flow mixing every face (18) with air-out, and described air-flow is formed by the stepped section of described the first dissipating cover (11a) and the second dissipating cover (11b) every face (18).
11. cold box heat abstractors according to claim 10, is characterized in that, described the first dissipating cover (11a) and the second dissipating cover (11b) adopt fixture to fasten.
12. cold box heat abstractors according to claim 10, is characterized in that, described the first dissipating cover (11a) and the second dissipating cover (11b) are provided with the installation screw (19) for the element that is fixedly cooled is installed.
13. cold box heat abstractors according to claim 10, is characterized in that, described the first dissipating cover (11a) and the second dissipating cover (11b) are made up of following arbitrary material:
Aluminium, copper, kirsite, heat-conducting plastic.
14. cold box heat abstractors according to claim 10, is characterized in that, the leaf formula fan that described fan (13) is flat pattern for external form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110205730.1A CN102261629B (en) | 2011-07-21 | 2011-07-21 | Box type heat sink and cold-box heat sink |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110205730.1A CN102261629B (en) | 2011-07-21 | 2011-07-21 | Box type heat sink and cold-box heat sink |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102261629A CN102261629A (en) | 2011-11-30 |
| CN102261629B true CN102261629B (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110205730.1A Active CN102261629B (en) | 2011-07-21 | 2011-07-21 | Box type heat sink and cold-box heat sink |
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| CN (1) | CN102261629B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114832A (en) * | 2015-07-21 | 2015-12-02 | 中山市优米照明科技有限公司 | Heat dissipation device with LED light source |
| CN111829267A (en) * | 2020-08-12 | 2020-10-27 | 深圳市诺泰芯装备有限公司 | Cooling and heat dissipating device and method for chip after high-temperature test |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6421239B1 (en) * | 2000-06-06 | 2002-07-16 | Chaun-Choung Technology Corp. | Integral heat dissipating device |
| CN2594507Y (en) * | 2002-12-13 | 2003-12-24 | 神基科技股份有限公司 | Radiating structure |
| CN101660743A (en) * | 2009-09-14 | 2010-03-03 | 广州南科集成电子有限公司 | Radiator and LED lamp with fan |
| CN201606751U (en) * | 2010-01-20 | 2010-10-13 | 深圳市日锋电子有限公司 | Safety LED spotlight |
| CN202432489U (en) * | 2011-07-21 | 2012-09-12 | 上海信洁照明科技有限公司 | Box type heat radiation device and cold box heat radiation device |
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