Area-increased multifunctional efficient cooling fin

By designing a three-dimensional main frame and fishbone-shaped heat dissipation units, the problem of limited heat dissipation area and insufficient mechanical strength of existing heat sinks is solved, achieving efficient and uniform heat dissipation and customization capabilities, making it suitable for various electronic devices.

CN224083899UActive Publication Date: 2026-04-03ZHONGSHAN YUHAO HARDWARE PROD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-21
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

Existing heat sinks have limited heat dissipation area, uneven heat dissipation efficiency, low degree of customization, and insufficient mechanical strength, making it difficult to meet the heat dissipation requirements of high power density electronic devices.

Method used

The design adopts a three-dimensional main frame and a fishbone-shaped heat dissipation unit, including bottom fish spine fins and fishbone-shaped heat dissipation units. Through the L-shaped and inverted L-shaped fishbone-shaped inner and outer heat dissipation fins, a multi-directional airflow heat dissipation channel and pores are formed, optimizing the airflow path and increasing the heat dissipation area and mechanical strength.

Benefits of technology

It significantly improves heat dissipation efficiency and mechanical strength, achieves more uniform heat distribution, adapts to customized needs for different shapes and installation spaces, protects electronic components, and extends equipment life.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of radiating fins, and discloses an area-increased multifunctional efficient radiating fin which comprises a three-dimensional main frame, the three-dimensional main frame comprises a bottom fish spine fin and a plurality of fish-bone-shaped radiating units which extend upwards from the bottom fish spine fin and are arranged on the bottom fish spine fin at equal intervals, and the fish-bone-shaped radiating units are arranged on the bottom fish spine fin. The bottom fish spine fins and the plurality of fishbone-shaped heat dissipation units are of an integrated structure; the fishbone-shaped heat dissipation unit comprises a top fishbone fin, and fishbone-shaped inner heat dissipation fins and fishbone-shaped outer heat dissipation fins which extend from the top fishbone fin to the two sides and are distributed in a staggered mode. The three-dimensional main frame provides a stable heat dissipation frame, the heat dissipation area is increased, air is allowed to flow in multiple directions, and therefore the heat dissipation effect is improved. And the fishbone-shaped heat dissipation units increase the number of the heat dissipation units, so that the heat dissipation area is increased. And meanwhile, optimization of air flow is facilitated, and the heat dissipation efficiency is improved.
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Description

Technical Field

[0001] This utility model belongs to the field of heat sink technology, specifically relating to a multi-functional and high-efficiency heat sink with increased area. Background Technology

[0002] With the increasing power density of electronic devices, heat dissipation has become a key factor affecting device performance and reliability. Traditional heat dissipation solutions, such as flat heat sinks, heat pipes, and cooling fans, can meet heat dissipation requirements to a certain extent, but they have limitations in terms of heat dissipation efficiency, size, weight, and customization. Therefore, developing heat sinks with higher heat dissipation efficiency, better adaptability, and superior structural strength has become an important direction for current electronic heat dissipation technology.

[0003] Existing heat sink technologies mainly include the following types:

[0004] Flat-plate heat sinks: These heat sinks are typically made of materials with good thermal conductivity, such as aluminum or copper, and feature a simple structure and low cost. However, flat-plate heat sinks have a limited heat dissipation area, and their heat dissipation efficiency is limited by the thermal conductivity of the material and airflow conditions.

[0005] Heat pipes: Heat pipes utilize the principle of heat pipes to transfer heat through an internal working fluid during evaporation and condensation. Although they have high heat dissipation efficiency, heat pipes are relatively complex to design and manufacture, and are difficult to adapt to heat sources of different shapes and installation spaces.

[0006] Cooling fans: Cooling fans combine a heatsink and a fan, improving heat dissipation efficiency by forcing airflow. However, fan noise and energy consumption limit their use in certain applications.

[0007] In light of this, we propose a multi-functional, high-efficiency heat sink with increased surface area. Through its three-dimensional main frame and fishbone-shaped heat dissipation unit design, it significantly increases the heat dissipation area, providing higher heat dissipation efficiency, while also exhibiting good mechanical strength and customization capabilities. It solves the problems of limited heat dissipation area, uneven heat dissipation efficiency, low customization, insufficient mechanical strength, and size and weight limitations in existing technologies, providing a more efficient and reliable heat dissipation solution for electronic devices. Utility Model Content

[0008] The present invention aims to solve the technical problems of limited heat dissipation area, uneven heat dissipation efficiency, low degree of customization and insufficient mechanical strength of heat sinks in the prior art.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A multi-functional high-efficiency heat sink with increased area includes a three-dimensional main frame. The three-dimensional main frame includes a bottom fish spine fin and a number of fish bone-shaped heat dissipation units that extend upward from the bottom fish spine fin and are arranged at equal distances on the bottom fish spine fin. The bottom fish spine fin and the number of fish bone-shaped heat dissipation units are an integral structure.

[0011] The fishbone-shaped heat dissipation unit includes a top fish spine fin, staggered fishbone-shaped inner heat dissipation fins extending from the top fish spine fins to both sides, and fishbone-shaped outer heat dissipation fins.

[0012] The three-dimensional main frame provides a robust heat dissipation framework. The three-dimensional structure helps improve heat dissipation efficiency because it increases the heat dissipation area and allows air to flow in multiple directions, thus enhancing heat dissipation. The fishbone-shaped heat dissipation units increase the number of heat dissipation units, thereby increasing the heat dissipation area. Simultaneously, this arrangement helps optimize airflow and improve heat dissipation efficiency.

[0013] Preferably, the fishbone-shaped inner heat dissipation fins have an L-shaped structure, and the fishbone-shaped outer heat dissipation fins have an inverted L-shaped structure. The design of the L-shaped and inverted L-shaped fin structures allows the fishbone-shaped inner and outer heat dissipation fins to capture and conduct heat more effectively. The L-shaped structure increases the heat exchange area and helps guide airflow.

[0014] Preferably, the fishbone-shaped inner heat dissipation fins are located between two adjacent fishbone-shaped outer heat dissipation fins, and similarly, the fishbone-shaped outer heat dissipation fins are located between two adjacent fishbone-shaped inner heat dissipation fins. The staggered distribution of the fishbone-shaped inner and outer heat dissipation fins increases the contact area of ​​the heat dissipation fins, thereby improving heat dissipation efficiency and helping to form a more uniform airflow.

[0015] Preferably, a parallel heat dissipation channel A is formed between adjacent fishbone-shaped heat dissipation units and the bottom fish spine fins. The parallel heat dissipation channel A helps to form a continuous airflow path, thereby improving heat dissipation efficiency.

[0016] Preferably, two heat dissipation channels B are formed between the fishbone-shaped inner and outer heat dissipation fins on both sides of the top fish spine fin, and a middle heat dissipation channel C is formed between the two heat dissipation channels B. The heat dissipation channels B and C further increase the heat dissipation area and provide more paths for airflow, thus aiding in heat dissipation.

[0017] Preferably, ventilation holes A are formed between two adjacent herringbone-shaped outer heat dissipation fins, communicating with heat dissipation channel B, and ventilation holes B are formed between two adjacent herringbone-shaped inner heat dissipation fins, communicating with both heat dissipation channel B and the intermediate heat dissipation channel C. Ventilation holes A and B allow air to flow freely between the heat dissipation channels, increasing heat dissipation efficiency and helping to dissipate heat quickly.

[0018] Preferably, heat dissipation channels A, B, C, A, and B are interconnected. This interconnected arrangement of channels and vents ensures smooth airflow, thereby improving overall heat dissipation performance.

[0019] Preferably, the spacing between two adjacent fishbone-shaped outer heat dissipation fins is 3-5 mm, and the spacing between two adjacent fishbone-shaped inner heat dissipation fins is the same as the spacing between two adjacent fishbone-shaped outer heat dissipation fins. Appropriate spacing of the heat dissipation fins ensures uniform airflow and avoids increased airflow resistance due to excessively dense fins.

[0020] Preferably, the width of heat dissipation channel A is 3-5mm, and the width of the top fish spine fins is 3-5mm. Appropriate widths ensure sufficient airflow space without being too large, thus avoiding material waste or reduced heat dissipation efficiency.

[0021] Preferably, the width of heat dissipation channel B is 3-4 mm and the height is 14-16 mm, while the width of the intermediate heat dissipation channel C is 3-4.5 mm and the height is 15-17 mm. This is beneficial for optimizing airflow and heat exchange, and improving heat dissipation efficiency.

[0022] Compared with the prior art, the technical effects and advantages of this utility model are:

[0023] This multi-functional, high-efficiency heat sink, with its increased surface area, utilizes a three-dimensional main frame and fishbone-shaped heat dissipation units to significantly increase the heat dissipation area, allowing air to flow in multiple directions and improving heat dissipation efficiency. The U-shaped, reciprocating arrangement of the fishbone-shaped heat dissipation units increases the number of heat dissipation units, further enhancing the heat dissipation area and airflow efficiency.

[0024] The L-shaped and inverted L-shaped structures of the fishbone-shaped inner and outer heat dissipation fins, along with their staggered distribution among the heat dissipation units, increase the heat exchange area and guide airflow for effective heat exchange. The design of heat dissipation channels A, B, and the intermediate channel C, as well as the placement of vents A and B, further optimize the airflow path, allowing heat to be transferred to the air more quickly. The careful design of the width, height, and fin spacing of heat dissipation channels A, B, and C ensures smooth airflow and efficient heat dissipation. These dimensional choices help maximize the balance between heat dissipation area and airflow, reduce heat transfer resistance, and improve heat dissipation efficiency.

[0025] The increased heat dissipation area and optimized airflow path enable the heat sink to dissipate heat more efficiently, reducing heat source temperature and improving the operating efficiency and lifespan of electronic devices or other components requiring heat dissipation. The integrated bottom fishbone fins and fishbone-shaped heat dissipation unit structure provide excellent mechanical strength, preventing the heat sink from deforming during heat dissipation and maintaining its operating efficiency. Through the staggered distribution of the fishbone-shaped heat dissipation units and the design of the heat dissipation channels, the heat sink can provide a more uniform heat distribution, reducing hotspot formation and thus protecting sensitive electronic components.

[0026] The size, length, height, and shape of the heat sink can be customized to meet different application scenarios and installation spaces. This provides effective heat dissipation support for a variety of products and satisfies different technical requirements and market trends. Attached Figure Description

[0027] Figure 1 This is a first-view diagram of the present invention;

[0028] Figure 2 This is a second-view diagram of the present invention;

[0029] Figure 3 This utility model Figure 1 The main view;

[0030] Figure 4 This utility model Figure 1 Top view;

[0031] Figure 5 This is a schematic diagram of the fishbone-shaped heat dissipation unit of this utility model.

[0032] In the diagram: 100, three-dimensional main frame; 11, bottom fish spine fins; 12, fishbone-shaped heat dissipation unit; 1201, top fish spine fins; 1202, fishbone-shaped inner heat dissipation fins; 1203, fishbone-shaped outer heat dissipation fins; 1204, heat dissipation channel B; 1205, middle heat dissipation channel C; 1206, ventilation hole A; 1207, ventilation hole B; 13, heat dissipation channel A. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] The following combination Figures 1 to 5 This application will be described in further detail.

[0035] This application discloses a multi-functional high-efficiency heat sink with increased area, including a three-dimensional main frame 100. The three-dimensional main frame 100 includes a bottom fish spine fin 11 and a plurality of fish bone-shaped heat dissipation units 12 that extend upward from the bottom fish spine fin 11 and are arranged at equal distances on the bottom fish spine fin 11. The bottom fish spine fin 11 and the plurality of fish bone-shaped heat dissipation units 12 are an integral structure.

[0036] The fishbone-shaped heat dissipation unit 12 includes a top fish spine fin 1201, fishbone-shaped inner heat dissipation fins 1202 and fishbone-shaped outer heat dissipation fins 1203 extending from the top fish spine fin 1201 to both sides in a staggered arrangement.

[0037] The fishbone-shaped inner heat dissipation fins 1202 have an L-shaped structure, while the fishbone-shaped outer heat dissipation fins 1203 have an inverted L-shaped structure. The L-shaped design increases the surface area of ​​the fins, thus providing a larger heat exchange area and helping to improve heat conduction efficiency. The L-shaped structure provides additional mechanical strength to the heat sink, making it more robust and durable. The inverted L-shaped structure helps guide airflow, resulting in more efficient heat exchange.

[0038] The fishbone-shaped inner heat dissipation fins 1202 are located between two adjacent fishbone-shaped outer heat dissipation fins 1203, and similarly, the fishbone-shaped outer heat dissipation fins 1203 are located between two adjacent fishbone-shaped inner heat dissipation fins 1202. This arrangement ensures smoother airflow because the inner heat dissipation fins are surrounded by the outer heat dissipation fins, which helps to create good convection between the fins. The inner heat dissipation fins being located between the outer heat dissipation fins helps to more effectively transfer the heat absorbed from the heat source to the air.

[0039] like Figure 1 and Figure 2 As shown, the entire three-dimensional main frame 100 can be regarded as being composed of a number of fishbone-shaped heat dissipation units 12 arranged in a U-shaped reciprocating pattern. Whether viewed from the top or bottom of the three-dimensional main frame 100, the three-dimensional main frame 100 is composed of a number of fishbone-shaped heat dissipation units 12 arranged at equal intervals. For ease of description of the three-dimensional main frame 100, the bottom fish spine fin 11 is used as the central substrate of the three-dimensional main frame 100, and the fishbone-shaped heat dissipation units 12 are extended upward from the central substrate.

[0040] Parallel heat dissipation channels A13 are formed between adjacent fishbone-shaped heat dissipation units 12 and the bottom fish spine fins 11. These parallel heat dissipation channels A13 facilitate even heat distribution, allowing the entire heat sink to dissipate heat more effectively. The channel design helps reduce resistance to heat transfer, enabling heat to be transferred from the heat source to the heat sink more quickly.

[0041] Two heat dissipation channels B1204 are formed between the fishbone-shaped inner heat dissipation fins 1202 and the fishbone-shaped outer heat dissipation fins 1203 on both sides of the top fishbone fin 1201. A middle heat dissipation channel C1205 is formed between the two heat dissipation channels B1204. The two heat dissipation channels B1204 provide additional heat transfer paths, helping to improve heat dissipation efficiency. The heat dissipation channels B1204 separate heat flow, helping to avoid hot spots and making heat dissipation more uniform. The middle heat dissipation channel C1205 further increases the heat exchange path, helping to transfer heat from the inner heat dissipation fins to the air. The middle heat dissipation channel C1205 helps to disperse the heat absorbed by the top fins, making heat dissipation more uniform and reducing localized overheating of the heat source.

[0042] A ventilation opening A1206, communicating with the heat dissipation channel B1204, is formed between two adjacent herringbone-shaped outer heat dissipation fins 1203. A ventilation opening B1207, communicating with both the heat dissipation channel B1204 and the intermediate heat dissipation channel C1205, is formed between two adjacent herringbone-shaped inner heat dissipation fins 1202. Vent opening A1206 provides an additional channel for airflow, facilitating air circulation within the heat sink and improving heat dissipation efficiency. Vent opening A1206 helps reduce airflow resistance, allowing heat to be carried away more quickly. Vent opening B1207 allows for more effective heat dissipation between the inner heat dissipation fins, preventing localized overheating. The connection between ventilation opening B1207 and the heat dissipation channel B1204 and the intermediate heat dissipation channel C1205 increases the heat exchange path and improves heat exchange efficiency.

[0043] The heat dissipation channels A13, B1204, C1205, A1206, and B1207 are interconnected. This interconnected design allows for smoother airflow within the heatsink, enabling heat to be transferred from one channel to another, thus improving heat dissipation efficiency. The interconnected channels and holes also contribute to a more even distribution of heat within the heatsink, reducing the formation of hot spots. Heat dissipation channels A13, B1204, and C1205 are all arranged in parallel.

[0044] The three-dimensional main frame 100 provides a robust heat dissipation frame. The three-dimensional structure helps improve heat dissipation efficiency because it increases the heat dissipation area and allows air to flow in multiple directions, thereby enhancing heat dissipation. The U-shaped, reciprocating arrangement of the fishbone-shaped heat dissipation units 12 increases the number of heat dissipation units, thus increasing the heat dissipation area. Simultaneously, this arrangement helps optimize airflow and improve heat dissipation efficiency.

[0045] The design of the three-dimensional main frame 100 and the fishbone-shaped heat dissipation units 12 significantly increases the total surface area of ​​the heat sink. This increased heat dissipation area translates to a larger heat exchange area, facilitating the rapid transfer of heat from the heat source to the heat sink and its dissipation into the surrounding environment. The three-dimensional structure and the arrangement of the fishbone-shaped heat dissipation units 12 optimize the airflow path, enabling more efficient convection within the heat sink. This improved airflow accelerates the transfer of heat from the heat sink into the air.

[0046] The spacing between two adjacent herringbone-shaped outer heat dissipation fins 1203 is 3-5 mm, and the spacing between two adjacent herringbone-shaped inner heat dissipation fins 1202 is the same as the spacing between two adjacent herringbone-shaped outer heat dissipation fins 1203. This 3-5 mm spacing ensures both smooth airflow and the mechanical stability of the heat dissipation fins. Appropriate spacing maximizes the balance between heat dissipation area and airflow, thereby improving heat dissipation efficiency. A consistent spacing helps maintain the symmetry and consistency of the heat dissipation structure, improving its overall performance and stability. A consistent spacing also simplifies the design and manufacturing process of the heat dissipation fins, reducing production costs.

[0047] The width of the heat dissipation channel A13 is 3-5mm, and the width of the top fish spine fin 1201 is also 3-5mm. The 3-5mm width of the heat dissipation channel A13 provides suitable space for airflow; it is neither too narrow, causing excessive resistance, nor too wide, resulting in insufficient airflow and affecting heat dissipation efficiency. This width also provides sufficient structural strength to prevent deformation of the heat dissipation channel under high temperatures or mechanical vibration. The width of the top fish spine fin 1201 is the same as that of the heat dissipation channel A13, which facilitates effective heat conduction and ensures minimal heat loss during the transfer from the heat source to the fin. The appropriate width enhances the stability of the fish spine fin, preventing deformation due to high temperatures or external forces.

[0048] The width of heat dissipation channel B1204 is 3-4 mm and the height is 14-16 mm, while the width of the intermediate heat dissipation channel C1205 is 3-4.5 mm and the height is 15-17 mm. The dimensions of heat dissipation channel B1204 help increase the heat dissipation area while maintaining smooth airflow. The height-to-width ratio of heat dissipation channel B1204B helps to create effective heat exchange, allowing heat to be transferred from the fins to the air more quickly. The dimensions of the intermediate heat dissipation channel C1205 help to create a uniform heat distribution between the inner heat dissipation fins on both sides of the top fin 1201, preventing localized overheating. The optimized dimensions of the intermediate heat dissipation channel C1205 help to enhance air convection and improve heat dissipation efficiency.

[0049] The increased heat dissipation area and optimized airflow path enable the heat sink to dissipate heat more efficiently, reducing the temperature of the heat source and improving the efficiency and lifespan of electronic devices or other components requiring heat dissipation. The integrated bottom fishbone fin 11 and fishbone-shaped heat dissipation unit 12 structure provide excellent mechanical strength, preventing deformation during heat dissipation and maintaining its efficiency. Through the staggered distribution of the fishbone-shaped heat dissipation units 12 and the design of the heat dissipation channels, the heat sink can provide a more uniform heat distribution, reducing hot spots and protecting sensitive electronic components. The U-shaped folding design makes the airflow path between heat dissipation units more complex, increasing the airflow time inside the heat sink and improving heat exchange efficiency. Due to its high-efficiency heat dissipation performance, this type of heat sink can be widely used in various electronic devices, motors, power modules, and other fields. High-efficiency heat sinks can achieve efficient heat dissipation in a smaller volume and weight, which helps reduce material usage, lower costs, and also facilitates lightweight and compact product design.

[0050] The size of the heat sink, designed with a 100mm three-dimensional main frame, can be customized according to the customer's actual needs, whether it's a large size to fit large equipment or a small size to fit small electronic components. The length and height can also be adjusted according to heat dissipation requirements and application space, adapting to different heat source sizes and installation spaces. The shape of the heat sink can be customized according to the product's appearance design or internal space layout to adapt to different installation locations and usage conditions.

[0051] This multi-functional, high-efficiency heatsink with increased surface area can be used to dissipate heat from computer CPUs, GPUs, and other heat-generating components, helping to maintain the normal operating temperature of the computer. It is also suitable for various household appliances, such as televisions, stereos, and microwave ovens, extending their lifespan. The heatsink provides necessary heat dissipation for LED lighting fixtures, ensuring that the fixtures are not damaged by overheating. The heatsink design can be adjusted according to specific customer needs, including the number, size, spacing, and overall structure of the fins. We provide customized heat dissipation solutions to meet different technical requirements and market trends.

[0052] In summary, this multi-functional, high-efficiency heat sink with increased surface area, through its unique three-dimensional structure and flexible design concept, can be customized according to customer needs without sacrificing heat dissipation efficiency, thereby providing effective heat dissipation support for various products.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-functional, high-efficiency heat sink with increased surface area, characterized in that, The three-dimensional main frame (100) includes a bottom fish spine fin (11) and several fish bone-shaped heat dissipation units (12) that extend upward from the bottom fish spine fin (11) and are arranged at equal intervals on the bottom fish spine fin (11). The bottom fish spine fin (11) and the several fish bone-shaped heat dissipation units (12) are an integral structure. The fishbone-shaped heat dissipation unit (12) includes a top fish spine fin (1201), fishbone-shaped inner heat dissipation fins (1202) extending from the top fish spine fin (1201) to both sides in a staggered distribution, and fishbone-shaped outer heat dissipation fins (1203).

2. The multi-functional high-efficiency heat sink with increased surface area according to claim 1, characterized in that: The fishbone-shaped inner heat dissipation fins (1202) have an L-shaped structure, and the fishbone-shaped outer heat dissipation fins (1203) have an inverted L-shaped structure.

3. The multi-functional high-efficiency heat sink with increased area according to claim 1, characterized in that: The fishbone-shaped inner heat dissipation fins (1202) are located between two adjacent fishbone-shaped outer heat dissipation fins (1203), and similarly, the fishbone-shaped outer heat dissipation fins (1203) are located between two adjacent fishbone-shaped inner heat dissipation fins (1202).

4. The multi-functional high-efficiency heat sink with increased area according to claim 1, characterized in that: Parallel heat dissipation channels A (13) are formed between adjacent fishbone-shaped heat dissipation units (12) and bottom fish spine fins (11).

5. The multi-functional high-efficiency heat sink with increased area according to claim 4, characterized in that: Two heat dissipation channels B (1204) are formed between the fishbone-shaped inner heat dissipation fins (1202) and the fishbone-shaped outer heat dissipation fins (1203) on both sides of the top fish spine fin (1201), and a middle heat dissipation channel C (1205) is formed between the two heat dissipation channels B (1204) on both sides of the top fish spine fin (1201).

6. The multi-functional high-efficiency heat sink with increased area according to claim 5, characterized in that: A ventilation hole A (1206) is formed between two adjacent fishbone-shaped outer heat dissipation fins (1203) and is connected to the heat dissipation channel B (1204). A ventilation hole B (1207) is formed between two adjacent fishbone-shaped inner heat dissipation fins (1202) and is connected to the heat dissipation channel B (1204) and the intermediate heat dissipation channel C (1205).

7. The multi-functional high-efficiency heat sink with increased area according to claim 6, characterized in that: The heat dissipation channels A (13), B (1204), C (1205), A (1206), and B (1207) are connected.

8. The multi-functional high-efficiency heat sink with increased area according to claim 1, characterized in that: The spacing between two adjacent fishbone-shaped external heat dissipation fins (1203) is 3-5 mm, and the spacing between two adjacent fishbone-shaped internal heat dissipation fins (1202) is the same as the spacing between two adjacent fishbone-shaped external heat dissipation fins (1203).

9. The multi-functional high-efficiency heat sink with increased area according to claim 4, characterized in that: The width of heat dissipation channel A (13) is 3-5mm, and the width of the top fish spine fin (1201) is 3-5mm.

10. The multi-functional high-efficiency heat sink with increased area according to claim 5, characterized in that: The width of heat dissipation channel B (1204) is 3-4mm and the height is 14-16mm, and the width of the middle heat dissipation channel C (1205) is 3-4.5mm and the height is 15-17mm.