CN101701780A - Heat sink section bar - Google Patents
Heat sink section bar Download PDFInfo
- Publication number
- CN101701780A CN101701780A CN200910170265A CN200910170265A CN101701780A CN 101701780 A CN101701780 A CN 101701780A CN 200910170265 A CN200910170265 A CN 200910170265A CN 200910170265 A CN200910170265 A CN 200910170265A CN 101701780 A CN101701780 A CN 101701780A
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- heat sink
- section bar
- heat
- radiating
- piece
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Abstract
The invention provides a heat sink section bar, relates to an engineering heat sink device, in particular to a heat sink section bar for accelerating heat sink of electronic products, and aims to solve the technical problem of improving the structure of the existing heat sink section bas to realize active heat sink of the section bars. The invention adopts the following technical scheme for solving the above technical problem: the heat sink section bar comprises a heat sink substrate and a heat sink piece arranged on the heat sink substrate, the heat sink substrate and the heat sink piece are combined to form a tube shape with the cross section of the top being arc-shape. As for further improvement, a bead can be axially arranged at the exterior of the heat sink piece, and moreover, a bead can be axially arranged at the interior of the heat sink piece. The invention improves structure, adds heat sink mode and enhances heat sink efficiency.
Description
Technical field
The present invention relates to the engineering heat abstractor, particularly electronic product is accelerated the heat sink section bar of heat radiation.
Background technology
For heat sink section bar, general scheme is that heat-radiating substrate adds radiating fin, radiating fin is for directly tabular, be distributed in (another face is installed the element that needs heat radiation) on the face of heat-radiating substrate, simultaneously can be at the rib and the recessed groove of a plurality of projectioies of each radiating fin side arrangement, the side that makes radiating fin is as ripple.
This scheme adopts thermal-radiating mode to carry out passive heat radiation, and each radiating fin and air carry out heat exchange, and rib and groove increase area of dissipation.If this radiator is installed on the LED light fixture of Shi Yonging out of doors, when wind is arranged when wind direction be when radiating fin is blown over, this radiating effect can be better; And when wind direction is blown over perpendicular to radiating fin, radiating effect relatively forward will be far short of what is expected during wind.Anyway, this scheme all is a kind of pattern of passive heat radiation, for the bigger element of some caloric values, the radiating effect of this heat sink section bar is just less desirable.
Summary of the invention
The object of the present invention is to provide a kind of heat sink section bar, improve, realize the purpose of section bar active heat removal at the structure of existing heat sink section bar.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: heat sink section bar, and comprise heat-radiating substrate, and be arranged at the radiating piece on the heat-radiating substrate, described radiating piece combines in a tubular form with heat-radiating substrate, and the top, cross section is an arc.
As the external shaft of the described radiating piece of further improvement to being provided with fin
As the inner shaft of the described radiating piece of further improvement to also being provided with fin.
Beneficial effect of the present invention is: the present invention is with respect to straight plate radiating fin, and top, radiating piece cross section is an arc, has increased the area that radiating piece contacts with air, can pass through heat loss through radiation as straight plate radiating fin on the one hand; When on the other hand wind being arranged, when wind direction is when radiating piece is blown over, this radiating effect can be better; And when wind direction was blown over perpendicular to radiating piece, because the radiating piece top is an arcuation, wind can be advanced along this cambered surface, and the air of generation flows can through radiating piece bottom and the contacted position of heat-radiating substrate.
In addition, an advantage of maximum of the present invention is that under the situation that does not have outside air to flow, the tubular conduit that radiating piece forms can produce cross-ventilation.For example: when this heat sink section bar is used for the LED light fixture, be positioned at the caloric value big (the LED bulb of head end is more relatively) of a side of lamp body head end, therefore the heat that conducts to heat sink section bar one side is many than opposite side, like this in tubular conduit, the heat of one end can be higher than the other end, the air expanded by heating of this end that heat is high, can be from then on end overflow tubular conduit (the lamp body head can be a little more than the other end on horizontal level during lamp installation, LED street lamp particularly, hot-air rises, promote more air from the head this end overflow), cause the air pressure in the tubular conduit inhomogeneous like this, outside air can enter from the tubular conduit other end by nature, replenishes air and reaches air pressure balance.Like this, just form the convection current of air, in tubular conduit, produced air and flow, blown over along radiating piece when wind is arranged, improved radiating effect greatly.Straight plate radiating fin can not produce this effect.
Description of drawings
Fig. 1, heat sink section bar structural representation of the present invention.
Fig. 2, heat sink section bar end face structure figure of the present invention.
Fig. 3, heat sink section bar cross-ventilation internal heat dissipating schematic diagram of the present invention.
Fig. 4, heat sink section bar extraneous air heat exchange schematic diagram of the present invention.
Fig. 5, heat sink section bar embodiment two structural representations of the present invention.
Fig. 6, heat sink section bar embodiment biend structure chart of the present invention
The specific embodiment
As Fig. 1, shown in Figure 2, heat sink section bar of the present invention comprises heat-radiating substrate 1, and is arranged at the radiating piece 2 on the heat-radiating substrate 1, and described radiating piece 2 combines in a tubular form with heat-radiating substrate 1, and the top, cross section is an arc.With respect to straight plate radiating fin, top, radiating piece 2 cross section is an arc, has increased the area that radiating piece 2 contacts with air, can pass through heat loss through radiation as straight plate radiating fin on the one hand; When on the other hand wind being arranged, when wind direction is when radiating piece is axially blown over, this radiating effect can be better; And when wind direction is blown over perpendicular to radiating piece 2 (as shown in Figure 4), because radiating piece 2 tops are arcuation, wind can be advanced along this cambered surface, and the air of generation flows can through radiating piece 2 bottoms and heat-radiating substrate 1 contacted position
Under the situation that does not have outside air to flow, the tubular conduit that radiating piece 2 forms can produce cross-ventilation.As shown in Figure 3, when this heat sink section bar is used for the LED light fixture, be positioned at the caloric value big (the LED bulb of head end is more relatively) of a side of lamp body head end, therefore the heat that conducts to heat sink section bar one side is many than opposite side, like this in tubular conduit, the heat of one end can be higher than the other end, the air expanded by heating of this end that heat is high, can be from then on end overflow tubular conduit (the lamp body head can be a little more than the other end on horizontal level during lamp installation, LED street lamp particularly, hot-air rises, promote more air from the head this end overflow), cause the air pressure in the tubular conduit inhomogeneous like this.Outside air can enter from the tubular conduit other end by nature, replenishes air and reaches air pressure balance.Like this, just form the convection current of air, in tubular conduit, produced air and flow, blown over along radiating piece when wind is arranged, improved radiating effect greatly.
As the embodiment two that improvement provides, as Fig. 5, shown in Figure 6, the external shaft of described radiating piece 2 is to being provided with fin 3.The inner shaft of described radiating piece 2 is to being provided with fin 3`.Be to strengthen the ability of heat exchange.
The present invention not only is confined to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; though but on its shape or structure, do any variation, every have identical with a present invention or akin technical scheme, all within its protection domain.
Claims (3)
1. heat sink section bar comprises heat-radiating substrate (1), and is arranged at the radiating piece (2) on the heat-radiating substrate (1), it is characterized in that: described radiating piece (2) combines in a tubular form with heat-radiating substrate (1), and the top, cross section is an arc.
2. heat sink section bar according to claim 1 is characterized in that: the external shaft of described radiating piece (2) is to being provided with fin (3).
3. heat sink section bar according to claim 1 and 2 is characterized in that: the inner shaft of described radiating piece (2) is to being provided with fin (3`).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910170265A CN101701780A (en) | 2009-09-09 | 2009-09-09 | Heat sink section bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910170265A CN101701780A (en) | 2009-09-09 | 2009-09-09 | Heat sink section bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101701780A true CN101701780A (en) | 2010-05-05 |
Family
ID=42156700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910170265A Pending CN101701780A (en) | 2009-09-09 | 2009-09-09 | Heat sink section bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101701780A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994355A (en) * | 2014-06-10 | 2014-08-20 | 王菊子 | Heat conduction tube type large-power LED lamp |
| CN108413805A (en) * | 2017-02-10 | 2018-08-17 | 先技精工(日本)有限公司 | Cooling fin |
-
2009
- 2009-09-09 CN CN200910170265A patent/CN101701780A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994355A (en) * | 2014-06-10 | 2014-08-20 | 王菊子 | Heat conduction tube type large-power LED lamp |
| CN108413805A (en) * | 2017-02-10 | 2018-08-17 | 先技精工(日本)有限公司 | Cooling fin |
| CN108413805B (en) * | 2017-02-10 | 2022-02-15 | 先技精工(日本)有限公司 | Heat sink |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100505 |