HEAT DISSIPATING FIN, HEAT DISSIPATING DEVICE AND METHOD OF MANUFACTURING THE SAME
A heat dissipating device includes a base and a plurality of heat dissipating fins. Each of the heat dissipating fins includes a heat dissipating portion, a fixing portion and an overflow-proof structure. The fixing portion is fixed in the base. The overflow-proof structure is connected between the heat dissipating portion and the fixing portion. A width of the overflow-proof structure is larger than a width of the heat dissipating portion and larger than a width of the fixing portion.
1. Field of the Invention
The invention relates to a heat dissipating fin, a heat dissipating device and a method of manufacturing the same and, more particularly, to a heat dissipating fin capable of preventing overflow while manufacturing a heat dissipating device.
2. Description of the Prior Art
Heat dissipating device is a significant component for electronic products. When an electronic product is operating, the current in circuit will generate unnecessary heat due to impedance. If the heat is accumulated in the electronic components of the electronic product without dissipating immediately, the electronic components may get damage due to the accumulated heat. Therefore, the performance of heat dissipating device is a significant issue for the electronic product.
Referring to
The invention provides a heat dissipating fin capable of preventing overflow while manufacturing a heat dissipating device. The heat dissipating fin is formed by a forming process without the draft angle of the conventional heat dissipating fin, so as to solve the aforesaid problems.
As mentioned in the above, the invention forms the heat dissipating fin by the forming process (e.g. aluminum extrusion process, rivet forming process, etc.) first and then forms the base, which covers the fixing portion of the heat dissipating fin, by the die casting process with the melt metal material. The heat dissipating fin of the invention has the overflow-proof structure capable of preventing the melt metal material from overflowing during the die casting process so as to prevent deckle edge from being generated. Since the heat dissipating fin of the invention is formed by the forming process, the draft angle of the conventional heat dissipating fin is unnecessary for the heat dissipating fin of the invention. Therefore, the whole weight of the heat dissipating fin of the invention can be lighter and the height of the heat dissipating fin of the invention can be higher than the prior art. Furthermore, the number of heat dissipating fins of the invention can be increased in the heat dissipating device so that the heat dissipating area can be increased and the heat dissipating efficiency can be enhanced.
These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings.
Referring to
Furthermore, each of the heat dissipating fins 32 may further comprise a recess structure 326 formed on the fixing portion 322. In this embodiment, the recess structure 326 is arc-shaped. In another embodiment, the recess structure 326 may be polygon-shaped.
Referring to
Referring to
Referring to
Referring to
Referring to
Referring to
Referring to
As mentioned in the above, the invention forms the heat dissipating fin by the forming process (e.g. aluminum extrusion process, rivet forming process, etc.) first and then forms the base, which covers the fixing portion of the heat dissipating fin, by the die casting process with the melt metal material. The heat dissipating fin of the invention has the overflow-proof structure capable of preventing the melt metal material from overflowing during the die casting process so as to prevent deckle edge from being generated. Since the heat dissipating fin of the invention is formed by the forming process, the draft angle of the conventional heat dissipating fin is unnecessary for the heat dissipating fin of the invention. Therefore, the whole weight of the heat dissipating fin of the invention can be lighter and the height of the heat dissipating fin of the invention can be higher than the prior art. Furthermore, the number of heat dissipating fins of the invention can be increased in the heat dissipating device so that the heat dissipating area can be increased and the heat dissipating efficiency can be enhanced. Moreover, the invention may form the recess structure, the protruding structure, the hook structure and/or the extending structure on the heat dissipating fin so as to enhance the combination strength between the base and the heat dissipating fin.
Those skilled in the art will readily observe that numerous modifications and alterations of the device and method may be made while retaining the teachings of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.
Claims
1. A heat dissipating fin comprising:
- a heat dissipating portion;
- a fixing portion; and
- an overflow-proof structure connected between the heat dissipating portion and the fixing portion;
- wherein a width of the overflow-proof structure is larger than a width of the heat dissipating portion.
2. The heat dissipating fin of claim 1, wherein a length of the overflow-proof structure protruded from the fixing portion is between 1 mm and 10 mm.
3. The heat dissipating fin of claim 1, further comprising a recess structure formed on the fixing portion.
4. The heat dissipating fin of claim 3, further comprising a hook structure formed in the recess structure.
5. The heat dissipating fin of claim 1, further comprising a protruding structure protruded from one end of the fixing portion.
6. The heat dissipating fin of claim 1, further comprising an extending structure extended from the overflow-proof structure toward the fixing portion.
7. The heat dissipating fin of claim 6, wherein the overflow-proof structure and the extending structure are formed as U-shape.
8. The heat dissipating fin of claim 1, wherein a thickness of the overflow-proof structure is uniform or varies gradiently.
9. A heat dissipating device comprising:
- a base; and
- a plurality of heat dissipating fins, each of the heat dissipating fins comprising: a heat dissipating portion; a fixing portion fixed in the base; and an overflow-proof structure connected between the heat dissipating portion and the fixing portion; wherein a width of the overflow-proof structure is larger than a width of the heat dissipating portion.
10. The heat dissipating device of claim 9, wherein each of the heat dissipating fins further comprises a recess structure formed on the fixing portion.
11. The heat dissipating device of claim 10, wherein each of the heat dissipating fins further comprises a hook structure formed in the recess structure.
12. The heat dissipating device of claim 9, wherein each of the heat dissipating fins further comprises a protruding structure protruded from one end of the fixing portion.
13. The heat dissipating device of claim 9, wherein each of the heat dissipating fins further comprises an extending structure extended from the overflow-proof structure toward the fixing portion.
14. The heat dissipating device of claim 13, wherein the overflow-proof structure and the extending structure are formed as U-shape.
15. The heat dissipating device of claim 9, wherein a thickness of the overflow-proof structure is uniform or varies gradiently.
16. A method of manufacturing a heat dissipating device comprising:
- forming a plurality of heat dissipating fins by a forming process, wherein each of the heat dissipating fins comprises a heat dissipating portion, a fixing portion and an overflow-proof structure, the overflow-proof structure is connected between the heat dissipating portion and the fixing portion, a width of the overflow-proof structure is larger than a width of the heat dissipating portion;
- putting the fixing portion of each of the heat dissipating fins into a mold;
- pouring a melt metal material into the mold; and
- processing the melt metal material by a die casting process so as to form a base, wherein the base covers the fixing portion of each of the heat dissipating fins and the overflow-proof structure of each of the heat dissipating fins prevents the melt metal material from overflowing.
17. The method of claim 16, wherein the forming process is an aluminum extrusion process and each of the heat dissipating fins is a flat-type heat dissipating fin, or the forming process is a rivet forming process and each of the heat dissipating fins is a cylinder-type heat dissipating fin.
18. The method of claim 16, wherein forming a plurality of heat dissipating fins by a forming process further comprises forming a recess structure on the fixing portion.
19. The method of claim 16, wherein forming a plurality of heat dissipating fins by a forming process further comprises forming a protruding structure on the fixing portion and enabling the protruding structure to protrude from one end of the fixing portion.
20. The method of claim 16, wherein forming a plurality of heat dissipating fins by a forming process further comprises forming an extending structure on the overflow-proof structure and enabling the extending structure to extend from the overflow-proof structure toward the fixing portion.
21. The heat dissipating fin of claim 1, wherein the width of the overflow-proof structure is larger than a width of the fixing portion.
22. The heat dissipating device of claim 9, wherein the width of the overflow-proof structure is larger than a width of the fixing portion.
23. The method of claim 16, wherein the width of the overflow-proof structure is larger than a width of the fixing portion.
Type: Application
Filed: Dec 18, 2011
Publication Date: Jun 20, 2013
Inventors: Chia-Yu Lin (New Taipei City), Yen Tsai (New Taipei City)
Application Number: 13/329,313
International Classification: F28F 7/00 (20060101); B22D 19/00 (20060101); B21D 53/02 (20060101);