Fish-attracting lamp based on composite heat dissipation structure and its manufacturing method

Abstract

This invention relates to the field of fishery equipment technology, specifically to a fish-attracting lamp based on a composite heat dissipation structure and its manufacturing method. The fish-attracting lamp based on the composite heat dissipation structure of this application includes a chimney-shaped shell, with a flow guiding component inside the shell and a light component outside the shell. A protective component is provided outside the light component, enabling natural convection driven by the chimney effect, eliminating the need for active heat dissipation components such as fans, thus avoiding energy consumption, noise, and mechanical failure risks. The outer side of the shell has an arc-shaped curved surface with grooves perpendicular to the direction of gravity distributed on it. This grooves periodically disrupt the thermal boundary layer, enhancing fluid mixing and allowing for more efficient heat exchange near the surface. Simultaneously, the edges of the grooves create local separation and reattachment zones, increasing local turbulence and improving the heat transfer coefficient.

Description

Technical Field

[0001] This invention relates to the field of fishery equipment technology, specifically to a fish-attracting lamp based on a composite heat dissipation structure and its manufacturing method. Background Technology

[0002] Fish-attracting lights are key fishing aids in deep-sea fishing. They stimulate the phototactic behavior of fish using specific spectra, effectively attracting target fish schools and significantly improving fishing efficiency. Many fish and aquatic animals in natural waters exhibit phototactic and aggregative behavior, such as mackerel, horse mackerel, sardines, herring, squid, cuttlefish, and some shrimp and crabs. Using fish-attracting lights to attract these fish can significantly improve the fishing efficiency of fishing gear. Fish-attracting lights can be divided into surface-mounted fish-attracting lights and underwater fish-attracting lights according to their application. Underwater fish-attracting lights, with their energy-saving, wide-range attraction, and deep water penetration capabilities, have been widely used in squid fishing operations since the 1990s.

[0003] For a long time, metal halide lamps (hereinafter referred to as metal halide lamps) have been widely used as a source of light for fish attraction on water due to their high luminous efficacy, long lifespan, and convenient installation. This type of lamp still dominates nighttime fish attraction lighting on water. However, traditional metal halide lamps have many inherent defects: First, their luminous power is too high, resulting in huge energy consumption; second, the ultraviolet rays they emit can damage the eyes and skin of crew members, and the inner liner of metal halide lamps contains heavy metals such as mercury that are harmful to the environment, which can easily pollute the marine environment and is not suitable for the needs of green development; third, this type of light source has poor directionality and low light energy utilization efficiency.

[0004] With the advent of light-emitting diode (LED) light sources, LED fish-attracting lights have gradually entered the field of light-attracting fisheries due to their unique advantages. Compared with metal halide lamps, LED fish-attracting lights have many advantages such as low power consumption, ease of control, long lifespan, environmental friendliness, and good shock resistance. They can be designed with various light colors to attract specific fish species, and the light emission is highly directional, directing most of the emitted light flux towards the water surface or a specific direction, resulting in good fishing effects and energy conservation. Since 2005, Japan has been researching the use of blue LED fish-attracting lights to replace metal halide fish-attracting lamps to save energy and improve the working environment. The global LED fish-attracting light market has grown rapidly, reaching approximately US$378 million in 2021. my country's LED fish-attracting light production increased from 62,600 units in 2014 to 295,900 units in 2021. The gradual replacement of metal halide lamps by LED fish-attracting lights as the fish-attracting light source in light-attracting fisheries has become an inevitable trend for future development.

[0005] However, high-power LED fish-attracting lights face a severe heat dissipation problem during the fish-attracting process. Although the electro-optical conversion efficiency of LEDs is much higher than that of traditional light sources, a large portion of the electrical energy is still converted into heat energy. If this heat cannot be dissipated in time, it will seriously affect the fish-attracting performance of the fish-attracting light. Excessively high junction temperatures of LED chips will significantly reduce luminous efficiency, shorten lifespan, and even cause chip failure. Therefore, a good heat dissipation structure is crucial to ensuring the normal operation of fish-attracting lights.

[0006] Currently, high-power LED fish-attracting lights generally use single-structure finned heat sinks, dissipating heat to the surrounding environment through natural convection. However, with the continuous increase in LED power, the heat flux density per unit area has increased dramatically. Single-structured heat sinks are no longer sufficient to meet the high-efficiency heat dissipation requirements of high-power LED fish-attracting lights, and the problem of excessively high chip junction temperature has become increasingly prominent, becoming a key bottleneck restricting the development of high-power LED fish-attracting lights. Although some improvement solutions have emerged in existing technologies, such as adding cooling fans for active air cooling or using water-cooled cooling networks to utilize seawater circulation cooling, these solutions all require additional drive devices (fans or water pumps), which not only increases the complexity and energy consumption of the system but also places higher demands on the power supply system of fishing vessels. At the same time, the reliability issues of active cooling components are particularly prominent in the harsh marine environment.

[0007] Therefore, there is an urgent need to develop a fish-attracting lamp based on a composite heat dissipation structure and its manufacturing method, so that it can meet the heat dissipation requirements of high-power LED fish-attracting lamps through natural convection alone without adding an external driving device, and can be easily applied to light-attracting fishing boats, thereby providing key equipment reliability guarantees for fishing boats to stably and efficiently complete fish attraction and fishing tasks in deep-sea fishing operations. Summary of the Invention

[0008] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a fish-attracting lamp based on a composite heat dissipation structure and its manufacturing method, which can meet the heat dissipation requirements of high-power fish-attracting lamps by relying on the natural convection effect of the chimney structure.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a fish-attracting lamp based on a composite heat dissipation structure includes a shell with a chimney-like structure, a flow guiding component inside the shell, a light component outside the shell, and a protective component outside the light component; the outer side of the shell is provided with an arc-shaped curved surface, and grooves perpendicular to the direction of gravity are distributed on the arc-shaped curved surface, and the edges of the grooves are provided with sharp corners.

[0010] Furthermore, the width and spacing of the groove texture are 0.5-10 mm; the depth of the groove texture is 0.05-0.8 mm.

[0011] Furthermore, the flow guiding component is an irregular tree-shaped rib, which is longitudinally distributed within the housing.

[0012] Furthermore, the lighting assembly includes an LED substrate mounted on the housing, a plurality of LED chips mounted on the LED substrate, an LED lens plate fixedly connected to the side of the housing on the outside of the LED chips, and an annular sealing ring on the inner edge of the LED lens plate.

[0013] Furthermore, several LED chips are connected in series in pairs to form a series branch, thus forming several series branches with the same specifications; the input terminals of the several series branches are connected in parallel to each other and are connected to a positive power interface, and their output terminals are connected in parallel to each other and are connected to a negative power interface; the positive power interface and the negative power interface are both disposed on the LED substrate to form a unified external power connection port.

[0014] Furthermore, the protective component includes a lampshade, which is connected to the housing via an S-shaped snap-fit ​​structure and secured with adhesive.

[0015] Furthermore, it also includes a heat pipe heat dissipation assembly, which includes an integrated heat pipe with continuous finned microgrooves inside; and the integrated heat pipe is filled with a heat-conducting medium.

[0016] Furthermore, heat pipe holes are provided on the housing, and the heat pipe holes are located in the middle of the LED chips connected in series.

[0017] Furthermore, the length of the heat pipe is 100-150mm; the width and height of the microgrooves of the heat pipe are 0.05-0.3mm.

[0018] The manufacturing method of a fish-attracting lamp based on a composite heat dissipation structure includes the following steps:

[0019] S1. Manufacturing of the shell: First, aluminum alloy is extruded to form a shell with tree-like ribs, forming a chimney flow channel that runs through the top and bottom, and the shell has pre-reserved heat pipe holes; then the shell is subjected to hard anodizing and fluorocarbon spraying surface treatment; finally, groove texture perpendicular to the direction of gravity is processed on the arc-shaped surface of the shell.

[0020] S2, Integrated heat pipe manufacturing: Fix the shell manufactured in S1, fix the extrusion-ploughing tool to the pull rod with the locking nut and align it with the heat pipe hole reserved on the shell; under the action of external power, the pull rod moves slowly along the inner wall of the heat pipe, the extrusion-ploughing tool generates extrusion stress with the inner wall of the heat pipe, causing the inner wall material to undergo plastic deformation and expand to both sides, and the metal at both ends continuously bulges along both sides, thus forming a heat pipe microgroove with continuous fins;

[0021] Next, the air inside the heat pipe is extracted by a vacuum pump through a three-way pipe. After the vacuum is evacuated to the set vacuum level, the vacuum channel is closed. Then, the liquid injection channel is opened to inject a preset amount of heat-conducting medium into the heat pipe. After that, the liquid injection channel is closed. The high-temperature heat-melting pipe clamp is used to squeeze and cut off the protruding part at the end of the heat pipe and heat-melt seal it to complete the sealing of the heat pipe port.

[0022] S3. Installation of lighting components and protective components: Solder the LED chips of the lighting components onto the LED substrate using solder paste. Then, install the LED substrate onto the housing manufactured in step S2 and apply a 0.1mm thick thermal grease with a thermal conductivity of 5W / (m•K) between the LED substrate and the mounting surface on the side of the housing. Next, fix the LED lens array plate to the side of the housing with screws. Finally, connect the lampshade of the protective components to the housing using an S-type snap-fit ​​structure and secure it with adhesive.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] 1. Completely natural convection cooling, no energy consumption and high reliability: This application relies entirely on natural convection driven by the chimney effect, without the need for active cooling components such as fans, avoiding the risks of energy consumption, noise and mechanical failure, and is particularly suitable for long-term stable operation in harsh environments such as the ocean and outdoors.

[0025] 2. Chimney-style structure and heat pipe work together to significantly improve heat dissipation efficiency: The chimney-style heat dissipation structure of this application utilizes the natural flow of hot air from bottom to top to form a continuous circulating airflow; the integrated heat pipe quickly transfers the heat of the LED chip to the heat dissipation area away from the substrate, avoiding local heat accumulation, while eliminating the contact thermal resistance between the traditional heat pipe and the heat sink, and greatly reducing the LED junction temperature.

[0026] 3. Dynamic thermal balance maintains the safe temperature of the chip: Low-temperature air is continuously supplied at the bottom of the chimney, while high-temperature air is discharged at the top, forming a stable natural convection circulation, which keeps the LED chip working within the safe temperature threshold and effectively extends the life of the chip and the lamp.

[0027] 4. Integrated design of heat dissipation, optics and protection: The lampshade and LED lens array board adopt a sealed structure to effectively prevent seawater and salt spray from entering while ensuring high optical light output efficiency, and protect the internal circuit. This achieves synergistic optimization of heat dissipation function, optical performance and protection capability, and improves the environmental adaptability and reliability of the overall system.

[0028] 5. Compact structure, no need for additional thermal interface optimization: The integrated design of the heat pipe and chimney heat dissipation structure reduces the number of multiple contact interfaces in traditional heat dissipation solutions, lowers the overall thermal resistance, and helps to achieve miniaturization and weight reduction of the lamp.

[0029] This invention provides a composite heat dissipation fish-attracting lamp solution with high heat dissipation efficiency, energy saving and environmental protection, high reliability, long service life and good environmental adaptability through the synergistic innovation of chimney-type heat dissipation structure, integrated heat pipe and sealed protection design. It has significant technological progress and broad application prospects. Attached Figure Description

[0030] Figure 1 a and b are schematic diagrams of the fish-attracting lamp based on a composite heat dissipation structure in a preferred embodiment of the present invention. Figure 1 ;

[0031] Figure 2 a and b are schematic diagrams of the fish-attracting lamp based on a composite heat dissipation structure in a preferred embodiment of the present invention. Figure 2 ;

[0032] Figure 3 a is a schematic diagram of the extrusion-ploughing tool, and b is a top view of the extrusion-ploughing tool;

[0033] Figure 4 This is a schematic diagram of the structure of the heat pipe inner surface microgroove plowing forming principle in a preferred embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the heat pipe vacuuming, liquid filling, and sealing structure in a preferred embodiment of the present invention;

[0035] Figure 6 In Figures 1-3, a, e are schematic diagrams of the outer surface of the shell.

[0036] Figure 7 This is a comparison chart of the simulation temperature results of Example 2 and Comparative Examples 1-3;

[0037] Figure 8 This is a comparison chart of the simulated airflow velocity results of Example 2 and Comparative Examples 1-3;

[0038] Figure 9 A schematic diagram illustrating the degree of agreement between the model's predicted and actual values ​​for the highest temperature.

[0039] Figure 10 The response surface graph of the groove parameters of the fish-collecting lamp in Example 2 and the highest temperature of the overall structure is shown.

[0040] Figure 11 This is a simulated temperature cloud map of the fish lamp in Example 2;

[0041] Figure 12 A summary report of the optimization schemes obtained by the genetic algorithm;

[0042] Figure 13 A graph showing the temperature monitoring points;

[0043] Figure 14 Temperature cloud map of the fish-attracting lamp;

[0044] Figure 15 Air velocity cloud map for fish-attracting lamps;

[0045] Figure 16 This is a summary report of key components in thermal simulation with and without heat pipes.

[0046] Figure 17 Flowchart for detecting the heat dissipation temperature of fish-attracting lamps;

[0047] Figure 18 This is a schematic diagram showing the location of the temperature measuring points on the fish-attracting lamp.

[0048] Figure 19 The temperature rise curve of the temperature measuring point of the fish-attracting lamp;

[0049] Figure 20 This is a comparison chart of the experimental and simulation errors of the fish-attracting lamp.

[0050] Reference numerals: 1. Housing; 2. Lampshade; 3. LED lens plate; 4. LED substrate; 5. LED chip; 6. Heat pipe; 7. Grooved texture; 8. Extrusion-ploughing tool; 9. Heat pipe microgroove; 10. Tie rod; 11. Nut; 12. Protrusion; 13. T-joint; 14. Working fluid; 15. Rib. Detailed Implementation

[0051] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0052] Reference Figures 1-2As shown, in a preferred embodiment of the present invention, a fish-attracting lamp based on a composite heat dissipation structure includes a chimney-shaped shell 1. The shell is made of 6063 aluminum alloy by extrusion molding, with a thermal conductivity of 201 W / (m•K), a length of 150 mm, a width of 80 mm, a chimney height of 435 mm, and a side thickness of 1.2 mm. It is surface treated with hard anodizing and fluorocarbon spraying to balance thermal conductivity and corrosion resistance. The housing 1 contains a flow guiding component, and the housing 1 also contains a lighting component. The lighting component is further protected by a protective component. This utilizes the chimney effect to drive natural convection, eliminating the need for active cooling components such as fans. This avoids energy consumption, noise, and mechanical failure risks. The bottom of the chimney structure continuously supplies low-temperature air, while the top discharges high-temperature airflow, forming a stable natural convection cycle that keeps the LED chip operating within a safe temperature threshold. The outer side of the housing 1 has an arc-shaped surface with grooves 7 (hereinafter referred to as grooves) perpendicular to the direction of gravity. This enhances the heat dissipation of the fish-attracting lamp. As air flows upwards along the wall of the heat dissipation structure, a gradually thickening thermal boundary layer forms. A thicker boundary layer results in stronger insulation but also reduces heat dissipation efficiency. The grooves 7, perpendicular to the direction of gravity, act as a series of tiny "dams" along the path of the rising natural convection air, causing the air to repeatedly undergo a "impact-separation-reattachment" process. This periodically disrupts the thermal boundary layer, enhances fluid mixing, and allows for more efficient heat exchange near the surface. Furthermore, the sharp edges of the groove texture 7 will generate local separation and reattachment zones, which can increase the degree of local turbulence and improve the heat transfer coefficient.

[0053] As a preferred embodiment of the present invention, it may also have the following additional technical features: the width and spacing of the groove texture are 0.5-10mm; the depth of the groove texture is 0.05-0.8mm, so that the fish-attracting lamp has a good heat dissipation effect.

[0054] In this embodiment, the heat guiding component is an irregular tree-shaped rib 15, which is longitudinally distributed inside the housing 1. There are a total of 16 irregular tree-shaped ribs 15, with a thickness of 1 mm at the thinnest point and a height of 435 mm. This allows the heat to be evenly dissipated, ensuring the heat balance inside the housing.

[0055] In this embodiment, the lighting assembly includes an LED substrate 4 mounted on the housing. The substrate is made of high thermal conductivity aluminum substrate with a thermal conductivity of 6 W / (m•K), a length of 398 mm, a width of 40 mm, and a thickness of 2 mm. A plurality of LED chips 5 are mounted on the LED substrate 4. An LED lens plate 3 is fixedly connected to the side of the housing 1 on the outside of the LED chips 5. An annular sealing ring is provided on the inner edge of the LED lens plate 3.

[0056] Specifically, the LED lens plate 3 is an LED lens array plate, which is made of PCP polycarbonate with a light transmittance of 92% and a thickness of 2.5mm. The light output angle of each lens in the array lens structure is 120°, corresponding one-to-one with the high-power LED chip 5. It is fixed to the side of the housing 1 by M2.5 stainless steel screws, forming optical protection for the LED chip 5. The inner edge is equipped with an annular sealing ring, which effectively blocks the intrusion of seawater, salt spray, water vapor and dust, protecting the internal LED and circuit from corrosion and short circuits, and playing the roles of light distribution, protection of LED chip and sealing and waterproofing.

[0057] In this embodiment, several LED chips 5 are connected in pairs to form a series branch (that is, every two LEDs are connected end to end to form a series branch), forming a total of several series branches with the same specifications (28 in this embodiment); the input terminals of the 28 series branches are connected in parallel to each other and are connected to a power positive interface, and the output terminals of the 28 series branches are connected in parallel to each other and are connected to a power negative interface; the power positive interface and the power negative interface are both disposed on the LED substrate to form a unified external power connection port. There are a total of 56 LED chips, and each LED has a rated power of 10W (rated voltage of 30~34V and rated current of 0.3A).

[0058] Specifically, the LED chip 5 is soldered to the LED substrate 4 with solder paste. The LED substrate 4 is coated with 0.1mm thick thermal grease with a thermal conductivity of 5W / (m•K) between the mounting surface of the housing 1 and the side surface of the housing 1. M4 stainless steel screws are used to tighten the grease evenly to ensure low thermal resistance contact.

[0059] High-power LED chips generate a lot of heat when they are working. Most of it is quickly transferred to the LED substrate through the solder layer, and then conducted to the chimney-type heat dissipation structure through thermal grease. A very small part is dissipated into the surrounding environment through heat convection and heat radiation via the LED lens array plate.

[0060] In this embodiment, the protective component includes a lampshade 2, which is made of tempered glass with a thickness of 1.8mm. The lampshade 2 is connected to the housing 1 via an S-shaped snap-fit ​​connection structure and is further secured with adhesive to improve connection reliability. It directly resists external impacts such as sea waves and collisions with fishing vessels, preventing damage to the internal LED lens array plate 3 and LED chip 5. It also performs secondary regulation of the LED emitted light, further optimizing the long-distance illumination range, light intensity distribution, and underwater penetration capability of the fish-attracting lamp to enhance its fish-attracting effect. Furthermore, it forms a flow channel with the chimney-shaped housing 1, guiding external cold air into the chimney channel and enhancing the natural convection heat dissipation effect.

[0061] Meanwhile, the lampshade and LED lens array board ensure optical light output efficiency while preventing seawater and salt spray from entering through a sealed design, effectively protecting the internal circuitry and achieving a three-in-one solution of heat dissipation, optics, and protection.

[0062] Example 2

[0063] like Figure 2 As shown, the difference between this embodiment and Embodiment 1 is that this embodiment also includes a heat pipe heat dissipation assembly. The heat pipe heat dissipation assembly includes an integrated heat pipe 6. The integrated heat pipe 6 has heat pipe microgrooves with continuous fins inside, forming a capillary wick structure to enhance the reflux capacity and heat transfer efficiency of the heat-conducting medium. The integrated heat pipe 6 is filled with a heat-conducting medium (that is, the working fluid described later). This heat-conducting medium is the medium that circulates inside the heat pipe. Its core function is to transfer heat from the evaporation section to the condensation section of the heat pipe by utilizing the evaporation and condensation process of the working fluid, so as to achieve efficient heat transfer.

[0064] In this embodiment, a heat pipe hole is provided on the housing 1. The heat pipe hole is located in the middle of the LED chips connected in series, so that the heat pipe can quickly conduct the heat generated by the LED chip to the heat sink end away from the LED, so as to prevent a large amount of heat from accumulating at the LED chip and the substrate, thereby reducing the junction temperature of the LED chip. In addition, the integrated heat pipe integrated with the chimney-type housing can avoid the phenomenon of large thermal resistance due to poor contact between the traditional heat pipe and the heat sink.

[0065] In this embodiment, the length of the heat pipe is 100-150mm; the width and height of the microgrooves of the heat pipe are 0.05-0.3mm, which improves the heat dissipation efficiency of the fish-attracting lamp.

[0066] The manufacturing method of a fish-attracting lamp based on a composite heat dissipation structure includes the following steps:

[0067] S1. Manufacturing of the shell: First, aluminum alloy is extruded to form a shell with tree-like ribs and a chimney-like flow channel running through the top and bottom, and heat pipe holes are reserved on the shell; then, the shell is subjected to hard anodizing and fluorocarbon spraying surface treatment; finally, grooves perpendicular to the direction of gravity are processed on the arc-shaped surface of the shell to increase the heat dissipation area, and the sides of the shell are tightly attached to the lamp cover and fixed with the superconducting thermal metal substrate and LED lens array plate.

[0068] After the temperature rises, the chimney-type heat dissipation structure transfers heat to the surrounding environment through thermal convection. The air inside the chimney structure expands and decreases in density due to heat, causing the hot air to flow from bottom to top along the chimney channel, forming a hot airflow from the air inlet at the bottom of the chimney to the air outlet at the top. The hot airflow is discharged from the top of the chimney structure, releasing heat to the external environment. The bottom of the chimney structure is continuously replenished with low-temperature air, forming a continuous natural air convection circulation, which keeps the LED chip temperature within a safe threshold.

[0069] S2, Integrated heat pipe manufacturing: Fix the shell 1 manufactured in S1, fix the extrusion-ploughing tool to the pull rod with the locking nut and align it with the heat pipe hole reserved on the shell; Under the action of external power, the pull rod moves slowly along the inner wall of the heat pipe, and the extrusion-ploughing tool generates extrusion stress with the inner wall of the heat pipe, causing the inner wall material to undergo plastic deformation and expand to both sides, and the metal at both ends continuously bulges along both sides, thereby forming a heat pipe microgroove with continuous fins;

[0070] Next, the air inside the heat pipe is extracted by a vacuum pump through a three-way pipe. After the vacuum is evacuated to the set vacuum level, the vacuum channel is closed. Then, the liquid injection channel is opened to inject a preset amount of heat-conducting medium into the heat pipe. After that, the liquid injection channel is closed. The high-temperature heat-melting pipe clamp is used to squeeze and cut off the protruding part at the end of the heat pipe and heat-melt seal it to complete the sealing of the heat pipe port.

[0071] S3. Installation of lighting components and protective components: Solder the LED chips of the lighting components onto the LED substrate using solder paste. Then, install the LED substrate onto the housing manufactured in step S2 and apply a 0.1mm thick thermal grease with a thermal conductivity of 5W / (m•K) between the LED substrate and the mounting surface on the side of the housing. Next, fix the LED lens array plate to the side of the housing with screws. Finally, connect the lampshade of the protective components to the housing using an S-type snap-fit ​​structure and secure it with adhesive.

[0072] Specifically, the integrated heat pipe is fabricated by directly drilling holes in the chimney-like heat dissipation structure between the LED chips connected in series, and then... Figure 3 The extrusion-ploughing tool shown is used for extrusion-ploughing to obtain a one-piece heat pipe 6. Its working principle is as follows: Figure 4 As shown, before extrusion-plowing, the chimney-type heat dissipation structure 1 is fixed, and then the extrusion-plowing tool 8 is fixed to the pull rod 10 with the locking nut 11 and aligned with the heat pipe opening reserved on the chimney-type heat dissipation structure 1. When extrusion-plowing begins, the pull rod 10 moves slowly along the inner wall of the heat pipe under the action of external force. The extrusion-plowing tool 8 generates extrusion stress with the inner wall of the heat pipe, causing the inner wall material of the heat pipe to undergo plastic deformation and expand to both sides. The metal at both ends bulges along both sides, thus forming a heat pipe microgroove capillary wick structure 9 with continuous fins.

[0073] Heat pipe heat transfer medium filling method: through Figure 5The method shown is used for evacuation, filling, and sealing of the heat pipe working fluid. When fabricating the chimney-type heat dissipation structure 1, a portion 12 extends from the reserved heat pipe location for evacuation, filling, and sealing of the working fluid. The three-way pipe 13 and the protruding portion 12 of the heat pipe are sealed with a sealing material. During evacuation, channel b is closed, and a vacuum pump extracts air from the pipe through channel a. During filling, channel a is closed, and the pressure difference between the air inside the pipe and atmospheric pressure is used to extract liquid from the working fluid 14 until the pre-designed working fluid volume is reached. During sealing, channels a and b are closed, and a high-temperature heat-sealing clamp is used to clamp and heat-seal the protruding portion 12 of the heat pipe, completing the sealed encapsulation of the heat pipe port.

[0074] Comparative Example 1

[0075] like Figure 6 As shown in Figure a, the difference between this embodiment and Example 1 is that the arc-shaped surface is provided with groove textures 7 that are parallel to the direction of gravity.

[0076] Comparative Example 2

[0077] like Figure 6 As shown in b-6d, the difference between this embodiment and Example 1 is that: the curved surface is distributed with pits, and the pits are arranged in one of the following shapes: rectangle, circle, or hexagon.

[0078] Comparative Example 3

[0079] like Figure 6 As shown in e, the difference between this implementation and Example 1 is that there is no structure on the arc-shaped surface.

[0080] Comparative Example 4

[0081] The difference between this implementation and Example 2 is that the fish-attracting lamp has no heat pipe.

[0082] Simulation testing and performance testing.

[0083] 1. Simulation tests of Example 2 and Comparative Examples 1-3.

[0084] Simulations were conducted using ANSYS Icepak on the five surface textures in Example 2 and Comparative Examples 1-3. Under the same boundary conditions (part size, LED thermal power, material properties, and ambient temperature), the improvement of heat dissipation performance of the heat dissipation structure by different surface textures was investigated. The results are as follows: Figure 7 The X-direction temperature cloud map and the YZ plane global temperature cloud map at x=-12 are shown, where a is a groove (perpendicular to the direction of gravity), b is a groove (parallel to the direction of gravity), c is a rectangular pit, d is a circular pit, e is a hexagonal pit, and f is no structure.

[0085] Figure 8The particle trace diagram showing the magnitude of airflow velocity and the airflow velocity cloud diagram in the YZ plane at x=-12 are shown, where a is a groove (perpendicular to the direction of gravity), b is a groove (parallel to the direction of gravity), c is a rectangular pit, d is a circular pit, e is a hexagonal pit, and f is no structure.

[0086] pass Figure 7 It can be seen that the texture type with grooves (perpendicular to the direction of gravity) has the highest overall temperature and the lowest temperature, and has the best effect on improving the heat dissipation performance of the fish-attracting lamp.

[0087] from Figure 8 The air velocity contour plot in the YZ plane at x=-12 shows that the higher the temperature of the texture type, the faster the air velocity. This is because the higher temperature of the heat dissipation structure leads to a larger temperature difference with the environment, and the temperature difference is the key factor driving airflow inside the chimney structure; the greater the temperature difference, the faster the air velocity.

[0088] On the outer surface of the heat dissipation structure, as air flows upward along the wall, a gradually thickening thermal boundary layer forms. The thicker the boundary layer, the stronger the insulation effect, but this leads to a decrease in heat dissipation efficiency. The grooves perpendicular to the direction of gravity act like a series of tiny "dams" along the path of naturally rising air, causing the air to repeatedly undergo a "impact-separation-reattachment" process. This periodically disrupts the thermal boundary layer, enhances fluid mixing, and allows for more efficient heat exchange near the surface. Furthermore, the sharp edges of the grooves create localized separation and reattachment zones, increasing localized turbulence and improving the heat transfer coefficient.

[0089] Grooves parallel to the direction of gravity act as a guide for the mainstream airflow, directing it upwards. However, this can actually stabilize or even thicken the thermal boundary layer, leading to reduced heat transfer in some areas. While circular or rectangular depressions can also disturb the thermal boundary layer and enhance localized heat transfer, their effect is localized and discrete. As airflow passes through a depression, it creates stable vortices within it. However, when air exchange between these vortex regions and the mainstream airflow is impeded, the convective heat transfer capacity of that region is weakened. Therefore, their heat transfer effect is not as good as the continuous, penetrating boundary layer disruption achieved by vertical grooves.

[0090] 2. Test on the influence of surface texture parameters on the heat dissipation performance of fish-attracting lamps.

[0091] Based on response surface methodology, this application fits the width of the grooves, the spacing between the grooves, and the depth of the grooves to establish a response surface equation for the heat dissipation structure performance with respect to surface texture parameters, in order to determine the optimal optimization scheme.

[0092] This application involves three variable factors: groove width W, groove spacing S, and groove depth D. The optimization objective is the highest temperature T of the overall structure. A ternary quadratic regression orthogonal rotational combination design experimental method is adopted to create a regression model of the influence of factors on the objective, and the experimental factors affecting the experimental objective are optimized. The experimental factors and level codes are shown in Table 1.

[0093] Table 1. Levels of experimental factors

[0094]

[0095] The ANSYS Icepak simulation results and experimental scheme are shown in Table 2. The experimental results were analyzed using Design-Expert software to analyze the variation law of the experimental index under the influence of various experimental factors.

[0096] Table 2. Experimental Scheme and Results

[0097]

[0098] Based on the results in Table 2, a second-order response surface regression equation for temperature with respect to the groove texture parameters was obtained by fitting the data using response surface methodology:

[0099]

[0100] The degree of agreement between the predicted value of the highest temperature response equation and the actual simulation results is as follows: Figure 9 As shown, the predicted values ​​of the response equation agree well with the simulation results, proving that the response equation can accurately reflect the simulation results.

[0101] The goodness of fit of the response equation needs to be tested using analysis of variance (ANOVA). ANOVA is a statistical technique used to test whether there are significant differences between sample values ​​from multiple populations. In ANOVA, key considerations should be... Value and value. The variance between groups (VG) is a statistical measure used to compare VG between groups and VG within groups, reflecting the degree of difference between groups relative to difference within groups. A higher value indicates a more significant difference between groups, suggesting a possible statistically significant difference, but this cannot be determined solely by... The magnitude of the value alone cannot directly determine the significance of the difference; it must be combined with other factors. The value should be considered comprehensively. The value is a key indicator for measuring the significance of differences. If the value is less than the significance level (e.g., 0.05), the difference is considered significant; otherwise, if... If the value is greater than the significance level, the difference is considered insignificant. (Misfit term) The larger the value, the less significant the difference between the misfit error and the pure error, and the better the model fit. Table 3 shows the analysis of variance for the response surface equation at the highest temperature.

[0102] Table 3. Variance analysis of the response surface model at the highest temperature.

[0103]

[0104] As can be seen from Table 3, the highest temperature response model , at the significance level, lack of fit term The value is not significant, therefore the model fits the highest temperature response well.

[0105] Response surface and contour analysis: Figure 10 The response surface plots for different groove parameters and the highest temperature of the overall structure show the interaction between each groove parameter on the highest temperature, revealing the degree of mutual influence between groove parameters and their impact on the overall heat dissipation performance.

[0106] Figure 10 (a) shows the response surface plot of the groove width and spacing with respect to the highest temperature of the overall structure when the groove depth is 0.3 mm. It can be seen that with changes in W and S, the highest temperature of the overall structure is 110.295℃, and the lowest temperature is 109.923℃. From the projected curves of the response surface, it can be seen that the isotherms are more densely packed at the groove width, therefore the groove width has a more significant impact on the highest temperature of the overall structure, as expressed in Figure [Figure number missing]. .

[0107] Figure 10 (b) shows the response surface plots of the groove width and groove depth versus the highest temperature of the overall structure when the groove spacing is 4 mm. It can be seen that the highest temperature of the overall structure is significantly affected by the groove width and groove depth. With changes in W and D, the highest temperature of the overall structure is 110.684℃, and the lowest temperature is 109.87℃. From the projected curves of the response surface, it can be seen that the isotherms are denser at the groove depth; therefore, the groove depth has a more significant impact on the highest temperature of the overall structure, as expressed in Figure [Figure showing the relationship between groove width and groove depth]. .

[0108] Figure 10(c) shows the response surface plots of the groove spacing and groove depth with respect to the highest temperature of the overall structure when the groove width is 4 mm. It can be seen that the highest temperature of the overall structure is significantly affected by the groove spacing and groove depth. With changes in S and D, the highest temperature of the overall structure is 110.634℃, and the lowest temperature is 109.912℃. From the projected curves of the response surface, it can be seen that the isotherms are denser at the groove depth; therefore, the groove depth has a more significant impact on the highest temperature of the overall structure, as expressed in Figure [Figure showing the relationship between groove spacing and groove depth]. .

[0109] In summary, the degree of influence of each parameter of the groove on the maximum temperature of the overall structure, from highest to lowest, is as follows: The groove depth has the greatest impact on the overall heat dissipation performance of the structure. On the one hand, as the groove depth increases, the disruption of the thermal boundary layer also gradually increases, forming stronger eddies to improve surface convective heat transfer. Furthermore, groove depth is the most effective dimension for increasing sidewall area. On the other hand, the core function of the heat sink is to rapidly conduct the heat generated by the LED to the heat sink itself. However, as the groove depth increases, the wall thickness at the groove gradually decreases, which gradually hinders the heat conduction path to the side of the heat sink furthest from the LED chip. Therefore, an optimal balance needs to be struck between the enhanced convection and reduced thermal conductivity caused by changing the groove depth.

[0110] The width of the groove is a secondary factor affecting the maximum temperature of the overall structure. When the width is too small, it forms "slits" that make it difficult for air to enter, resulting in a weak convection enhancement effect. When the width is too large, it is equivalent to removing a continuous piece of material, which will seriously hinder the conduction of heat.

[0111] The spacing between grooves is the least significant factor affecting the overall structure's maximum temperature. When grooves are formed by removing material using surface texturing techniques, the wall thickness at the groove spacing is greater than the wall thickness at the groove width (the difference being the groove depth). The groove spacing is essentially equivalent to the width of the thermal ribs. If the spacing is too small, it means there are many thermal ribs, but each rib is thin and has poor thermal conductivity, preventing heat from being effectively transferred from the heatsink near the LED to the far end. If the spacing is too large, there will be too few grooves, failing to effectively disturb the thermal boundary layer.

[0112] This application also utilizes a genetic algorithm for optimization, which constructs a mathematical model using the maximum temperature as the minimization objective function to optimize the overall structure's heat dissipation performance. The maximum temperature is a function of the groove parameters:

[0113]

[0114] The optimized function is:

[0115]

[0116] During the surface texture design process, the groove parameters must conform to the actual situation to ensure the feasibility of the optimization scheme. For example, if the wall thickness of the heat dissipation structure is 1mm, the groove depth must not exceed this limit; the width of the groove and the spacing between grooves should also not be too large, otherwise the purpose of surface texture will be lost. In summary, the constraints of the parameters in this optimization scheme are summarized as follows:

[0117]

[0118] This application uses MATLAB to solve the problem. The population size is 1000, the number of iterations is 100, and the maximum allowed number of generations is 20. After optimization by the genetic algorithm, the optimal solution is W=2.47mm, S=3.36mm, D=0.21mm, and the highest temperature of the overall structure of the fish-attracting lamp is 109.864℃.

[0119] Next, the optimized scheme obtained from the genetic algorithm was used as data to build a three-dimensional model of the surface texture, and thermal simulation analysis was performed, comparing the results with those from the response surface equation. The simulation results and summary report of the optimized scheme are as follows: Figure 11 , 12 As shown ( Figure 11 In the diagram, a is the X-direction view, b is the Z-direction view, and c is the Y-direction view. - Directional view, d is Y + (Directional view), the highest temperature was 109.842℃, which differed from the calculated highest temperature by only 0.022℃, so the rationality of the optimization results can be believed.

[0120] 3. Simulation tests of Example 2 and Comparative Example 4.

[0121] Thermal simulations were performed on a fish-attracting light with a heat pipe, and its heat dissipation performance was compared with that of a fish-attracting light without a heat pipe to verify the feasibility of using a heat pipe. The results are as follows: Figure 13-16 As shown. Among them. Figure 14 In the diagram, a is an isometric view, b is the X-direction view, c is the Y-direction view, d is the Z-direction view, and e is the global temperature slice cloud map of the YZ plane at x=-12.

[0122] Figure 15 In the image, a is a particle trace plot showing the magnitude of air velocity, and b is a global air velocity slice cloud plot at x=-12 on the YZ plane.

[0123] Figure 16 In the diagram, 'a' represents a structure without heat pipes, and 'b' represents a structure with heat pipes.

[0124] from Figure 14 It can be seen that after adding heat pipes, the temperature difference between the two sides of the heat dissipation structure near and far from the PCB board is about 14℃, which is an improvement compared to the original 24℃ without heat pipes; and from Figure 16 It can be seen that the temperature standard deviation of the heat sink and PCB board is lower when heat pipes are present compared to when heat pipes are absent. Both of these factors indicate that the heat pipes contribute to a more uniform temperature distribution in the heat dissipation structure. Furthermore, the heat transfer is related to the temperature difference between the heat sink and the ambient temperature; a larger temperature difference results in greater convective heat transfer. The heat pipes not only make the temperature distribution of the heat sink more uniform but also increase the average temperature compared to when heat pipes are absent, thus correspondingly increasing the convective heat transfer.

[0125] By comparing the maximum temperature of the fish-attracting lamp system with and without heat pipes, it can be seen that the maximum temperature of the overall structure of the fish-attracting lamp system with heat pipes is 5.718℃ lower than that without heat pipes. Therefore, it can be concluded that heat pipes can effectively improve the junction temperature of the fish-attracting lamp system.

[0126] 4. Selection of heat transfer medium.

[0127] Since this application uses 6063 aluminum alloy as the heat dissipation structure material for the fish-attracting lamp, the tube shell is made of 6063 aluminum alloy. The temperature at the LED substrate is approximately 100~120℃, the operating temperature of the evaporation end of the heat pipe close to the substrate is approximately 100~110℃, and the operating temperature of the condensation end far from the substrate is approximately 60~80℃. According to Table 4, this application will select water, methanol, and acetone as the heat transfer medium.

[0128] Table 4. Physical properties and applicable temperature ranges of common heat pipe heat transfer media.

[0129]

[0130] (1) Water (H2O) is the heat transfer medium.

[0131] Compatibility: Water reacts chemically with aluminum. , generated This may cause blockage of the capillary core structure, and produce It is a non-condensable gas and will damage the vacuum performance of the heat pipe.

[0132] Treatment measures: ① Hard anodize the inner wall of the 6063 aluminum alloy to form a dense structure. Thin film, or treatment of the inner wall of 6063 aluminum alloy with chromate / phosphate passivation solution to block direct contact between water and aluminum substrate; ② Vacuuming of heat pipe to... To ensure an extremely low initial hydrogen partial pressure and slow down hydrogen accumulation; ③ Use high-purity deionized water (conductivity...) ), and remove dissolved oxygen by vacuum distillation or high-temperature boiling; ④ Add 0.5% sodium phosphate to the working medium. or sodium silicate ⑤ An exhaust valve is installed at the condenser end to periodically discharge hydrogen gas.

[0133] (2) Methanol (CH3OH) is the heat transfer medium.

[0134] Compatibility: Formic acid is generated at high temperatures (>100℃). It corrodes the inner wall of 6063 aluminum alloy; when impurities are present in formaldehyde, it may cause electrochemical corrosion.

[0135] Remedial measures: ① Anodize or passivate the inner wall of the 6063 aluminum alloy to enhance its surface corrosion resistance; ② Use anhydrous methanol (purity ≥99.9%) to avoid moisture contamination; ③ Add 0.1% sodium phosphate to the working fluid to neutralize acidic byproducts; ④ Ensure strict sealing to prevent methanol leakage.

[0136] (3) Acetone (C3H6O) is the heat transfer medium.

[0137] Compatibility: It has the best compatibility with 6063 aluminum alloy and is not prone to corrosion, but it is volatile, so care should be taken to prevent leakage.

[0138] Treatment measures: ① Anodize or passivate the inner wall of the 6063 aluminum alloy; ② Use high-purity acetone (moisture content <0.01%) to avoid slight electrochemical corrosion; ③ Add 0.1%~0.5% sodium phosphate to the working fluid to enhance stability; ④ Strictly seal to prevent leakage and avoid volatilization.

[0139] When water is used as the working fluid, surface treatment, corrosion inhibitors, and hydrogen venting are required to maintain the heat pipe evaporator at 110°C for long-term operation. However, this process is relatively complex and has high maintenance costs, so it is not chosen. When methanol is used as the working fluid, methanol oxidation is likely due to the evaporator temperature exceeding 100°C, so it is also not chosen. When acetone is used as the working fluid, surface treatment, corrosion inhibitors, and sealing are required. Compared to using water, this process is simpler, and the saturated vapor pressure at 110°C is approximately 471 kJ. The pressure is far lower than the allowable working pressure of 6063 aluminum alloy at 110℃. Therefore, taking into account the above materials, this application selects acetone as the working fluid for the heat pipe. According to the literature, the optimal filling rate of acetone is 15%~35%, and this application selects a filling rate of 30%.

[0140] 5. Heat dissipation effect test of Example 1 and Example 2.

[0141] The heat dissipation performance test mainly consists of an experimental prototype, an 1800W adjustable DC power supply, a temperature acquisition module, an isolated USB to 485 module, a temperature sensor, and a host computer.

[0142] To meet the core requirements of real-time temperature monitoring and accurate data acquisition for the experimental prototype, the experimental platform was built with the goal of adapting to the entire process of temperature signal acquisition, transmission, processing, and feedback. Priority was given to selecting equipment with strong compatibility and stable performance to simplify the setup and debugging process. Based on this approach, the platform adopts a hierarchical and modular overall architecture, divided into four major functional modules: power supply, temperature acquisition, signal conversion and transmission, and monitoring terminal. This forms a closed-loop system of power supply, acquisition, conversion, and monitoring, providing structured support for the experiments.

[0143] The power supply module uses an 1800W (0~72V, 0~25A) adjustable DC power supply. The LED circuit on the PCB board adopts a "series-then-parallel" combined topology design, specifically configured as follows: 56 LED beads with rated parameters of 10W (rated voltage of 30~34V, rated current of 0.3A) are selected as the core light-emitting components. First, the LED beads are grouped in pairs in series, with each pair of LED beads connected end-to-end to form a series branch, constructing a total of 28 LED series branches of the same specification. Then, the input and output terminals of these 28 series branches are connected in parallel to form a unified power supply positive and negative interface, and finally integrated on the PCB board to form a complete LED driver circuit. Under this structure, the rated voltage of each series branch is 60~68V, and the rated current is maintained at 0.3A. The total rated power of the entire circuit is 560W, and the total rated current is 8.4A. Within the power supply range of the adjustable DC power supply used in this application, uniform power supply and stable light emission of each LED bead can be achieved.

[0144] The temperature acquisition module uses a PT100 platinum resistance thermometer to collect temperature information and employs a three-wire wiring method. Based on the lead resistance compensation method, a bridge circuit can effectively overcome the error caused by lead resistance. The signal conversion and transmission module is based on an isolated USB to 485 module. It interfaces with the temperature acquisition module via a 485 bus and connects to the computer via a USB interface, ensuring stable power supply and enabling opto-isolation function. Communication parameters are unified according to the RS-485 protocol. The monitoring terminal module requires the installation of supporting software (ZhongSheng Integrated Test System) on the computer to complete driver matching and parameter settings such as acquisition frequency and storage path, realizing data visualization monitoring and management.

[0145] The stable operation of the experimental platform relies on the coordinated work of its various modules. Its core principle follows a closed-loop process of "energy supply - signal acquisition - signal conversion - data processing": the 1800W adjustable DC power supply converts the 220V power frequency voltage into stable DC power through AC-DC conversion, and the feedback regulation mechanism ensures the safety and continuity of power supply; the temperature sensor utilizes the characteristic that the resistance of platinum metal increases regularly with temperature to convert the physical quantity of temperature into an analog electrical signal and transmit it to the acquisition module; the acquisition module converts the analog signal into a digital signal through signal conditioning and A / D conversion, and the isolated USB to 485 module completes the interface conversion and anti-interference processing to ensure accurate data transmission; after receiving the digital signal, the computer decodes and calibrates it through software to realize real-time display, storage and alarm functions, ultimately achieving full monitoring of the temperature change of the experimental prototype over time.

[0146] Figure 17 The flowchart of the fish-attracting lamp heat dissipation temperature detection system is as follows: The measured temperature signal is converted into a weak electrical signal by the temperature sensor, and then amplified by the temperature acquisition module through A / D conversion before being transmitted to the host computer for analysis and processing. The computer and the temperature acquisition module communicate through the conversion driver. Finally, the temperature signal is acquired, processed, displayed and stored by the ZhongSheng Integrated Testing System software platform.

[0147] In the process of setting up the temperature measurement points in this experiment, the temperature points to be measured and the temperature sensor probes were first cleaned with anhydrous alcohol. Then, a very small amount of thermal grease was applied to the temperature points to be measured. The probes were gently pressed onto the surface to be measured with the grease, and the grease was gently pressed to ensure that it was fully filled. The probes were then fixed with polyimide high-temperature tape so that the temperature could be accurately transmitted to the temperature acquisition module through the temperature sensor for real-time temperature monitoring.

[0148] The LED chip is an EMC7070 LED bead, measuring 7mm x 7mm, while the surface-mount terminal of the temperature sensor is 20mm x 7.5mm. Using the LED chip as the temperature measurement point would not only prevent the probe from being securely fixed to the LED for proper temperature measurement, but would also severely impair the LED chip's heat dissipation, leading to an increase in the LED junction temperature. Therefore, this application selects six points on the heat dissipation structure and three points on the PCB board as temperature monitoring points. Figure 18 This is a schematic diagram showing the location of the temperature measurement points.

[0149] After the temperature sensor probes were set up, the experiment was conducted. The specific experimental design is as follows:

[0150] (1) Close the laboratory doors and windows and keep the experimental apparatus in a space with stable temperature and suitable humidity to reduce the interference of the external environment on the experimental results.

[0151] (2) Run the data acquisition system and observe whether the data acquisition system can collect room temperature without powering on, to ensure that all temperature sensor probes are in good contact with the surface to be measured.

[0152] (3) Turn on the power, adjust the voltage and current output values ​​to the required power, and continue heating for a period of time. Observe whether the temperature measurement points are normal and ensure that all probes are not detached.

[0153] (4) If the probe is normal, continue heating until it stabilizes, then turn off the power and cool it to room temperature. Output and save the test data during the system operation period.

[0154] (5) To ensure the accuracy of the experimental results, repeat the above steps for three tests.

[0155] (6) After the test is completed, shut down and clean up the experimental system equipment.

[0156] Experimental results verification: The storage interval of the temperature acquisition module was set to 10 seconds / time, and each experiment ran for 50 minutes to ensure that the temperature rise of the fish-attracting lamp system stabilized and reached thermal equilibrium. Since the temperature-time curves obtained from the three experiments showed highly consistent trends and minimal numerical deviations, to simplify the result presentation and reflect the average level of the test, the temperature data from the same time and measurement point in the three experiments were arithmetically averaged, resulting in the following final result: Figure 19 The experimental prototype is shown in the temperature rise curve of the measuring points at an ambient temperature of 30℃.

[0157] Comparative analysis of experimental and simulation results:

[0158] The highest temperatures measured at the three experimental points were summarized and compared with simulation data, resulting in Table 5. Based on the experimental and simulation results, the following... Figure 20 The diagram shows a comparison of the experimental and simulation errors of the fish-attracting lamp.

[0159] Table 5 Comparison of Experimental Results and Simulation Data

[0160]

[0161] The possible reasons for the error are: 1. During the experiment, the temperature sensor probe is connected to the prototype through thermal grease and polyimide high-temperature tape. Although the thermal grease has been applied as an extremely thin layer, it still has a certain interfacial thermal resistance, which has a slight impact on the measurement results.

[0162] 2. The heat dissipation structure is fixed to the PCB board by thermal grease and bolts. The effect of thermal grease was not considered in the simulation.

[0163] 3. In actual test environments, there may be subtle, undetectable airflow, which enhances heat dissipation.

[0164] Although there are some temperature deviations between the experimental and simulation results, they are all controlled within 10% and are basically consistent. Therefore, it can be verified that the simulation results have good accuracy and precision for actual thermal design.

[0165] In summary, this application constructed an experimental platform for the heat dissipation performance of a fish-attracting lamp. Using a temperature acquisition module and a PT100 temperature sensor, the temperature field at nine points on the lamp's structure was tested. The results showed that the temperature at each monitoring point was lower than the rated junction temperature (150℃) of the high-power LED, indicating that the heat dissipation structure can effectively dissipate the heat generated by the LED heat source. Furthermore, compared with simulation data, the temperature deviation at each monitoring point was controlled within 10%, verifying the accuracy of the simulation and the correctness and rationality of the thermal design.

[0166] Without causing conflict, those skilled in the art can freely combine and use the above-mentioned additional technical features.

[0167] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A fish-attracting lamp based on a composite heat dissipation structure, characterized in that: The device includes a chimney-shaped shell, an internal flow guiding component, an external lighting component, and an external protective component. The outer side of the shell has an arc-shaped surface with grooves perpendicular to the direction of gravity distributed on the arc-shaped surface, and the edges of the grooves have sharp corners.

2. The fish-attracting lamp based on a composite heat dissipation structure according to claim 1, characterized in that: The width and spacing of the groove texture are 0.5-10 mm; the depth of the groove texture is 0.05-0.8 mm.

3. The fish-attracting lamp based on a composite heat dissipation structure according to claim 1, characterized in that: The flow guiding component is an irregular tree-shaped rib, which is longitudinally distributed within the housing.

4. The fish-attracting lamp based on a composite heat dissipation structure according to claim 1, characterized in that: The lighting assembly includes an LED substrate mounted on the housing, a plurality of LED chips mounted on the LED substrate, an LED lens plate fixedly connected to the side of the housing on the outside of the LED chips, and an annular sealing ring on the inner edge of the LED lens plate.

5. The fish-attracting lamp based on a composite heat dissipation structure according to claim 4, characterized in that: Several LED chips are connected in series in pairs to form a series branch, forming several series branches with the same specifications; the input terminals of the several series branches are connected in parallel to each other and are connected to a positive power interface, and their output terminals are connected in parallel to each other and are connected to a negative power interface; the positive power interface and the negative power interface are both disposed on the LED substrate to form a unified external power connection port.

6. The fish-attracting lamp based on a composite heat dissipation structure according to claim 1, characterized in that: The protective component includes a lampshade, which is connected to the housing via an S-shaped snap-fit ​​structure and secured with adhesive.

7. The fish-attracting lamp based on a composite heat dissipation structure according to claim 5, characterized in that: It also includes a heat pipe heat dissipation assembly, which includes an integrated heat pipe with continuous finned microgrooves inside; and the integrated heat pipe is filled with a heat-conducting medium.

8. The fish-attracting lamp based on a composite heat dissipation structure according to claim 7, characterized in that: The housing has heat pipe holes, which are located between two LED chips connected in series.

9. The fish-attracting lamp based on a composite heat dissipation structure according to claim 7, characterized in that: The length of the heat pipe is 100-150mm; the width and height of the microgrooves of the heat pipe are 0.05-0.3mm.

10. A method for manufacturing a fish-attracting lamp based on a composite heat dissipation structure, characterized in that: Includes the following steps: S1. Manufacturing of the shell: First, aluminum alloy is extruded to form a shell with tree-like ribs, forming a chimney flow channel that runs through the top and bottom, and the shell has pre-reserved heat pipe holes; then the shell is subjected to hard anodizing and fluorocarbon spraying surface treatment; finally, groove texture perpendicular to the direction of gravity is processed on the arc-shaped surface of the shell. S2, Integrated heat pipe manufacturing: Fix the shell manufactured in S1, fix the extrusion-ploughing tool to the pull rod with the locking nut and align it with the heat pipe hole reserved on the shell; under the action of external power, the pull rod moves slowly along the inner wall of the heat pipe, the extrusion-ploughing tool generates extrusion stress with the inner wall of the heat pipe, causing the inner wall material to undergo plastic deformation and expand to both sides, and the metal at both ends continuously bulges along both sides, thus forming a heat pipe microgroove with continuous fins; Next, the air inside the heat pipe is extracted by a vacuum pump through a three-way pipe. After the vacuum is evacuated to the set vacuum level, the vacuum channel is closed. Then, the liquid injection channel is opened to inject a preset amount of heat-conducting medium into the heat pipe. After that, the liquid injection channel is closed. The high-temperature heat-melting pipe clamp is used to squeeze and cut off the protruding part at the end of the heat pipe and heat-melt seal it to complete the sealing of the heat pipe port. S3. Installation of lighting components and protective components: Solder the LED chips of the lighting components onto the LED substrate using solder paste. Then, install the LED substrate onto the housing manufactured in step S2 and apply a 0.1mm thick thermal grease with a thermal conductivity of 5W / (m•K) between the LED substrate and the mounting surface on the side of the housing. Next, fix the LED lens array plate to the side of the housing with screws. Finally, connect the lampshade of the protective components to the housing using an S-type snap-fit ​​structure and secure it with adhesive.

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