HEAT DISSIPATION APPARATUS

Abstract

A heat dissipation apparatus may include a heat dissipation plate, which is made of metal materials, and has a first end and a second end thereon. A plurality of slots formed on the heat dissipation plate are located between the first end and the second end, and a plurality of fin units are located between the two ends of the slots. A serrated surface is formed transversely on at least one side of the fin unit for enhancing the ductility thereof, and the fin unit protrudes from the heat dissipation plate. In one embodiment, the heat dissipation plate is circular, and the first end is located on a middle portion thereof, while the second end is located on an edge portions thereof, so the fin units are radially surrounded thereon.

Description

FIELD OF THE INVENTION

[0001] The present invention relates to a heat dissipation apparatus, and more particularly to a heat dissipation apparatus with fin units to enhance heat dissipation efficiency and lower the production cost.

BACK GROUND OF THE INVENTION

[0002] Current heat dissipation plate (20) (as shown in FIG. 12) is made of metal material and a plurality of fin units (21) thereon are formed by trimming and the fin units (21) are pulled out from one side of the heat dissipation plate (20) during the manufacturing process, so the fin units protrude the fin from the heat dissipation plate (20) to increase the surface area of the heat dissipation plate (20).

[0003] However, the conventional heat dissipation plate (20) is disadvantageous because: during the manufacturing process, joint sections between the fin unit (21) and the heat dissipation plate (20) may be too thin and easy to break during the manufacturing process, thus the defective rate of the product is rising. Also, the length of the fin units (21) and the surface area of the heat dissipation plate (20) are limited so heat dissipation efficiency cannot be improved. Therefore, there remains a need for a new and improved heat dissipation structure to overcome the problems illustrated above.

SUMMARY OF THE INVENTION

[0004] The present invention provides an enhanced heat dissipation structure, which comprises a heat dissipation plate, which is made of metal materials and has a first end and a second end thereon. A plurality of slots formed on the heat dissipation plate are located between the first end and the second end, and a plurality of fin units are located between the two ends of the slots. A serrated surface is formed transversely on at least one side of the fin unit for enhancing the ductility thereof. In addition, the fin unit protrudes from the heat dissipation plate.

[0005] In one embodiment, the heat dissipation plate is circular and the first ends are located on middle portions thereof, while the second ends are located on edge portions thereof, so the fin units are radially surrounded thereon.

[0006] In another embodiment, the fin unit is shaped into a form of a hollow triangle.

[0007] In still another embodiment, the serrated surface on the fin unit is triangle.

[0008] In yet another embodiment, the lower portion of serrated surface is perpendicular to the surface of the heat dissipation plate.

[0009] In a further embodiment, the serrated surface on the fin unit is composed of semi-circular shapes.

[0010] In still a further embodiment, an upper portion and a lower portion of the serrated surface are aligned, so the thickness of the fin unit is uniform.

[0011] In yet a further embodiment, the upper portion and the lower portion of the serrated surface are misaligned, so the thickness of the fin unit is not uniform.

[0012] In a particular embodiment, a triangle-shaped space is formed between the two nearby fin units on the second end and makes the fin units are divided to form a Y-shaped unit.

[0013] Comparing with conventional heat dissipation apparatus, the present invention is advantageous because the serrated surface is formed transversely on the fin unit for enhancing the surface area thereof, and the fin unit protrudes from the heat dissipation plate. The design of the serrated surface disperses the stress on the two ends of the heat dissipation plate into the fin unit and enables the fin unit to stretch easily for increasing the length of the fin unit and preventing the fin unit from breaking during the manufacturing process. The heat dissipation plate and the fin units are formed integrally, and the design of the serrated surface lower the production cost and enhance the heat dissipation efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG. 1 is a three-dimensional view of the heat dissipation apparatus of the present invention.

[0015] FIG. 2 is a sectional view of the heat dissipation apparatus of the present invention.

[0016] FIG. 3 is another three-dimensional view of the heat dissipation apparatus of the present invention when in use.

[0017] FIG. 4 is a schematic view of the manufacturing process of the heat dissipation apparatus in the present invention.

[0018] FIG. 5 is another schematic view of the manufacturing process of the heat dissipation apparatus in the present invention.

[0019] FIG. 6 is a schematic view of the heat dissipation apparatus of the present invention with the rectangle serrated surface.

[0020] FIG. 7 is a schematic view of the heat dissipation apparatus of the present invention with the semi-circular serrated surface.

[0021] FIG. 8 is a three-dimensional view of another embodiment of the heat dissipation apparatus of the present invention.

[0022] FIG. 9 is still another three-dimensional view of the heat dissipation apparatus of the present invention when in use.

[0023] FIG. 10 is a three-dimensional view of a further embodiment of the heat dissipation apparatus in the present invention.

[0024] FIG. 11 is a further three-dimensional view of the heat dissipation apparatus in the present invention.

[0025] FIG. 12 shows a prior art.

DETAILED DESCRIPTION OF THE INVENTION

[0026] The detailed description set forth below is intended as a description of the presently exemplary device provided in accordance with aspects of the present invention and is not intended to represent the only forms in which the present invention may be prepared or utilized. It is to be understood, rather, that the same or equivalent functions and components may be accomplished by different embodiments that are also intended to be encompassed within the spirit and scope of the invention.

[0027] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which this invention belongs. Although any methods, devices and materials similar or equivalent to those described can be used in the practice or testing of the invention, the exemplary methods, devices and materials are now described.

[0028] All publications mentioned are incorporated by reference for the purpose of describing and disclosing, for example, the designs and methodologies that are described in the publications that might be used in connection with the presently described invention. The publications listed or discussed above, below and throughout the text are provided solely for their disclosure prior to the filing date of the present application. Nothing herein is to be construed as an admission that the inventors are not entitled to antedate such disclosure by virtue of prior invention.

[0029] In order to further understand the goal, characteristics and effect of the present invention, a number of embodiments along with the drawings are illustrated as following:

[0030] Referring to FIGS. 1 and 2, the present invention provides an enhanced heat dissipation structure, which comprises a heat dissipation plate (10), which is made of metal materials as one unit and has a first end (11) and a second end (12) thereon. A plurality of slots (13) formed on the heat dissipation plate (10) are located between the first end (11) and the second end (12), and a plurality of fin units (14) are located between the two ends of the slots (13). The heat dissipation plate (10) is circular and the first ends (11) are located on middle portions thereof, while the second ends (12) are located on edge portions thereof, so the fin units (14) are radially surrounded thereon. A serrated surface (141) is formed transversely on at least one side of the fin unit (14) for enhancing the ductility thereof, and an embodiment of a one-sided serrated surface fin unit (14) is shown in FIG. 9. In addition, the fin units (14) protrude from the heat dissipation plate (10) and are shaped into a form of a hollow triangle, so the surface area of the heat dissipation plate (10) is increased significantly by the disposition of the fin unit (14) and the design of the serrated surface (141) to enhance the heat dissipation efficiency. In one embodiment, backside of the heat dissipation plate (10) can be attached to the surface of LED device (15) to achieve the effects of heat dissipation and cost reduction.

[0031] Referring to FIGS. 1,2 and 4, the heat dissipation plate (10) is circular and the slots (13) formed thereon are located between the first end (11) and the second end (12), and the length of the slots (13) determines the arrangement, length, and width of the fin units (14). The fin units (14) connecting the two ends of the slots (13) are not restricted to particular forms, shapes or arrangements. As shown in FIG.3, for example, the fin units (14) can be secured closed to the first end (11) to enhance the heat dissipation on the LED device (15), meaning that the present invention can be adjusted or modified depending on the actual implementation. The serrated surface (141) is formed transversely on the fin unit (14) for enhancing the surface area of the fin unit (14), and the fin unit (14) are configured to protrude from the heat dissipation plate (10). The design of the serrated surface (141) disperses the stress on the two ends of the heat dissipation plate (10) onto the fin unit (14) and enables the fin unit (14) to stretch easily for increasing the length of the fin unit (14) and preventing the fin unit (14) from breaking during the manufacturing process. Thus, the heat dissipation plate (10) and the fin units (14) can be formed integrally, and the design of the serrated surface (141) can lower the production cost and enhance the heat dissipation efficiency.

[0032] Referring to FIGS. 5 and 7, the serrated surface (141) on the fin unit (14) can be formed into the particular shapes such as triangle or semi-circular according to the needs, and an upper portion and a lower portion thereof can be formed aligned or misaligned to make the thickness of the fin unit (14) uniform or irregular. Referring to FIG. 6 for another embodiment, the fin unit (14) can only have the lower portion of the serrated surface (141) can be formed at an inner portion of the fin unit (14), which is perpendicular to the surface of the heat dissipation plate (10) for enhancing the heat dissipation. Referring to FIG. 8, a triangle-shaped space (142) is formed between the two nearby fin units (14) on the second end (12) and makes the fin unit (14) are divided to form a Y-shaped unit. Also referring to FIGS. 10 and 11, a periphery of the heat dissipation plate (10) can be shaped into a square or a cross-shaped unit. It is noted that all embodiments mentioned above are configured to lower the production cost and enhance the heat dissipation efficiency.

[0033] Having described the invention by the description and illustrations above, it should be understood that these are exemplary of the invention and are not to be considered as limiting. Accordingly, the invention is not to be considered as limited by the foregoing description, but includes any equivalents.

Claims

1. A heat dissipation apparatus comprising: a heat dissipation plate made of metal materials and having a first end and a second end; a plurality of slots formed on the heat dissipation apparatus located between the first end and the second end; a fin unit located between the first and second ends of each slot, wherein a serrated surface is formed transversely on at least one side of the fin unit for enhancing the ductility thereof, and the fin unit protrudes from the heat dissipation plate, so a surface area of the heat dissipation plate increases significantly by increasing length of the fin units and the serrated surface to enhance heat dissipation efficiency and lower production costs.

2. The heat dissipation apparatus of claim 1, wherein the heat dissipation plate is circular, and the first end is located on a middle portion thereof, while the second end is located on an edge portions thereof, so the fin units are radially surrounded thereon.

3. The heat dissipation apparatus of claim 1, wherein the fin unit protrudes from the heat dissipation plate and is shaped into a hollow triangle.

4. The heat dissipation apparatus of claim 1, wherein the shape of the serrated surface of the fin unit is triangle.

5. The heat dissipation apparatus of claim 1, wherein a lower portion of serrated surface is perpendicular to the surface of the heat dissipation plate.

6. The heat dissipation apparatus of claim 1, wherein the shape of the serrated surface of the fin unit is semi-circular.

7. The heat dissipation apparatus of claim 1, wherein an upper portion and a lower portion of the serrated surface are aligned, so the thickness of the fin unit is uniform.

8. The heat dissipation apparatus of claim 1, wherein an upper portion and a lower portion of the serrated surface are misaligned, so the thickness of the fin unit varies.

9. The heat dissipation apparatus of claim 1, wherein a triangle-shaped space is formed between two nearby fin units toward the second end and the fin units are divided to form a Y-shaped unit.

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