Radiator, vehicle lamp assembly and vehicle

Abstract

The utility model provides a radiator, a vehicle lamp assembly and a vehicle, and belongs to the technical field of vehicle lamp heat dissipation. The radiator comprises a heat conducting plate, a stacked radiator and a heat dissipation coil pipe; the heat conduction plate abuts against the surface of the heat source body. The stacked radiator is arranged on the surface of one side, deviating from the heat source body, of the heat-conducting plate; the heat dissipation coil pipe is fixed to the stacked heat dissipation body in a penetrating mode and filled with heat conduction fluid. According to the radiator provided by the utility model, heat generated when a lamp works is transferred to the stacked radiating body through the heat conducting plate to be radiated to the air, meanwhile, the heat can be absorbed by utilizing the radiating coil pipe penetrating through the stacked radiating body, and then the heat is quickly taken away from the stacked radiating body by utilizing the flowability of heat conducting fluid in the radiating coil pipe; therefore, the overall heat dissipation efficiency is improved, the structure is simple and compact, the space occupied by the arrangement of the heat dissipation fan can be saved, and the application requirements of small and compact heat dissipation structure and efficient heat dissipation are met.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle lighting technology, specifically relating to a radiator, a headlight assembly, and a vehicle. Background Technology

[0002] With the rapid development of the automotive industry in recent years, increasingly higher demands have been placed on automotive lighting, especially with the application of new light sources, the use of new technologies, and the improvement of optical design. As lighting fixtures are high-heat-generating components, heat dissipation performance is crucial to their stability and lifespan.

[0003] Currently, most automotive lighting fixtures use copper or aluminum fin heat sinks, and some high-power lights also incorporate fans for auxiliary cooling. However, adding a cooling fan complicates the overall structure and increases the size of the heat sink, which is detrimental to the installation layout of the lights. Without a cooling fan, the thermal conductivity of the heat dissipation materials used in the heat sink, such as copper or aluminum, is limited, preventing the achievement of the desired cooling effect. Therefore, there is an urgent need to develop and improve heat sink structures to meet the application requirements of compact design and efficient heat dissipation. Utility Model Content

[0004] This utility model provides a radiator designed to improve the compactness of the radiator structure and enhance its heat dissipation performance.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: Firstly, a heat sink is provided, including a heat-conducting plate, a stacked heat sink, and a heat dissipation coil; the heat-conducting plate abuts against the surface of a heat source; the stacked heat sink is disposed on the side of the heat-conducting plate away from the heat source; the heat dissipation coil is inserted and fixed to the stacked heat sink, and the heat dissipation coil is filled with a heat-conducting fluid.

[0006] In conjunction with the first aspect, in one possible implementation, the stacked heat sink includes several spaced-apart heat sink fins, each of which is connected to a heatsink coil. This not only increases the contact area between the stacked heat sink and the air, thereby improving its own heat dissipation performance, but also allows heat from each fin to be transferred to the corresponding part of the heatsink coil, where a heat-conducting fluid can quickly remove the heat, thus improving heat dissipation efficiency.

[0007] In some embodiments, the heat sink is a corrugated ceramic sheet, and a corrugated connection trajectory is formed between the heat sink and the heat-conducting plate. Compared to conventional copper or aluminum sheets, ceramic sheets have higher thermal conductivity, thereby increasing the rate of heat diffusion and transfer on the heat sink, as well as the rate of heat transfer to the heat dissipation coil, thus improving heat dissipation efficiency. Simultaneously, the corrugated structure of the heat sink increases the surface area, thereby increasing the contact area between the heat sink and the air, and further improving the efficiency of heat dissipation from the heat sink to the air.

[0008] For example, the heat sink includes multiple straight pipe sections and multiple curved sections, which are alternately connected to form a serpentine structure, with each straight pipe section penetrating the stacked heat sink. This serpentine structure, formed by the sequential connection of straight and curved sections, allows for repeated penetration of the stacked heat sink, increasing the path for heat transfer from the stacked heat sink to the heat sink and improving the efficiency of the heat sink in assisting heat dissipation from the stacked heat sink. Furthermore, it allows the heat sink to have a greater extension length, thereby increasing the amount of heat-conducting fluid and the contact area between the heat sink and the air, thus improving the efficiency of heat dissipation from the heat sink to the air.

[0009] For example, a stacked heat sink has multiple heat dissipation coils spaced apart, and the straight sections of each heat dissipation coil form an array within the stacked heat sink. The arrayed straight sections enable heat to be evenly transferred from the stacked heat sink to each heat dissipation coil, thereby improving the heat dissipation uniformity of the stacked heat sink.

[0010] In conjunction with the first aspect, in one possible implementation, the heat sink coil is a thermally conductive metal pipe. Using a thermally conductive metal pipe allows for the rapid transfer of heat from the stacked heat sink to the heat-conducting fluid, and also enables heat dissipation to the air, thereby improving heat dissipation efficiency.

[0011] In some embodiments, the heat transfer fluid is a liquid metal that forms convection within the heat sink coil based on temperature difference. The liquid metal's fluidity allows it to utilize temperature convection to transfer heat from the high-temperature locations directly in contact with the stacked heat sink to other parts, thereby rapidly removing heat from the stacked heat sink and improving heat dissipation efficiency.

[0012] For example, the heat-conducting plate is a graphene sheet. The ultra-high thermal conductivity of the graphene sheet can quickly transfer the heat emitted by the heat source to the stacked heat sink, thereby avoiding the impact of untimely heat dissipation from the heat source on the performance and improving the working stability of the heat source.

[0013] The beneficial effects of the heat sink provided by this utility model are as follows: Compared with the prior art, the heat generated by the lamp as a heat source when it is working is transferred to the stacked heat sink through the heat-conducting plate. The heat sink dissipates heat to the air through the stacked heat sink. On this basis, the heat sink coils inserted on the stacked heat sink can absorb heat. Then, the flow of the heat-conducting fluid in the heat sink coils can quickly carry the heat away from the contact point between the heat sink coils and the stacked heat sink, thereby achieving convection-assisted heat dissipation. This improves the heat dissipation efficiency of the stacked heat sink. It is not only simple and compact in structure, but also saves the space occupied by the cooling fan, thus meeting the application requirements of compact heat dissipation structure and high heat dissipation efficiency.

[0014] By using spaced heat sinks, the contact area between the stacked heat sink and the air can be increased, thereby improving the heat dissipation performance of the stacked heat sink itself. Moreover, the heat on each heat sink can be transferred to the corresponding part of the heat dissipation coil, and the heat can be quickly carried away by the heat-conducting fluid, thereby improving the heat dissipation efficiency.

[0015] Ceramic sheets have higher thermal conductivity than conventional copper or aluminum sheets, which can improve the speed of heat diffusion and transfer on the heat sink, as well as the speed of heat transfer to the heat dissipation coil, thereby improving heat dissipation efficiency. At the same time, the corrugated structure of the heat sink can increase the surface area, thereby increasing the contact area between the heat sink and the air, and thus improving the efficiency of the heat sink itself in dissipating heat to the air.

[0016] By connecting straight and curved sections in sequence to form a serpentine structure, the stacked heat sink can be repeatedly traversed, thereby increasing the path for heat transfer from the stacked heat sink to the heat dissipation coil and improving the efficiency of the heat dissipation coil in assisting the heat sink. On the other hand, it allows the heat dissipation coil to have a higher extension length, thereby increasing the amount of heat transfer fluid and the contact area between the heat dissipation coil and the air, thus improving the efficiency of the heat dissipation coil in dissipating heat to the air.

[0017] The array of straight pipe sections enables the heat from the stacked heat sink to be evenly transferred to each heat sink coil, thereby improving the heat dissipation uniformity of the stacked heat sink.

[0018] Using heat-conducting metal pipes can both rapidly transfer heat from the stacked heat sink to the heat-conducting fluid and dissipate heat to the air, thereby improving heat dissipation efficiency.

[0019] Liquid metal has fluidity and can utilize temperature convection to transfer heat from the high-temperature location where the heat sink is in direct contact with the stacked heat sink to other parts, thereby quickly removing heat from the stacked heat sink and improving heat dissipation efficiency.

[0020] The ultra-high thermal conductivity of graphene sheets can quickly transfer the heat emitted by the heat source to the stacked heat sink, thereby avoiding the heat source's inability to dissipate heat in time and thus improving the heat source's working stability.

[0021] Secondly, this utility model embodiment also provides a vehicle lighting assembly, including the aforementioned radiator.

[0022] The beneficial effects of the vehicle lighting assembly provided by this utility model are as follows: Compared with the prior art, the vehicle lighting assembly of this utility model adopts the above-mentioned heat sink, which can absorb heat by means of the heat sink coil inserted on the stacked heat sink itself, and then use the flow of heat-conducting fluid in the heat sink coil to quickly carry the heat away from the contact point between the heat sink coil and the stacked heat sink, thereby achieving convection-assisted heat dissipation, thereby improving the heat dissipation efficiency of the stacked heat sink. It is not only simple and compact in structure, but also saves the space occupied by the cooling fan, thus meeting the requirements of the vehicle lighting assembly for a compact and efficient heat dissipation structure, which is conducive to improving the efficiency and quality of the vehicle lighting assembly.

[0023] Thirdly, this utility model embodiment also provides a vehicle including the above-described vehicle light assembly.

[0024] The beneficial effects of the vehicle provided by this utility model are as follows: Compared with the prior art, the vehicle of this utility model adopts a headlight assembly with the above-mentioned radiator. On the basis of the heat dissipation of the stacked heat sink itself, the heat sink coil inserted on the stacked heat sink can absorb heat. Then, the heat is quickly carried away from the contact position between the heat sink coil and the stacked heat sink by the flow of the heat-conducting fluid in the heat sink coil, thereby achieving convection-assisted heat dissipation. This improves the heat dissipation efficiency of the stacked heat sink. It is not only simple and compact in structure, but also saves the space occupied by the cooling fan. This meets the requirements of the headlight assembly for a compact and efficient heat dissipation structure, which is conducive to improving the efficiency and quality of the headlight assembly, and thus improving the market feedback satisfaction of the vehicle. Attached Figure Description

[0025] Figure 1 A three-dimensional structural diagram of the radiator provided in an embodiment of this utility model;

[0026] Figure 2 This is an exploded structural diagram of the radiator provided in an embodiment of the present invention.

[0027] In the diagram: 10, heat-conducting plate; 20, stacked heat sink; 200, heat sink fin; 30, heat sink coil; 31, straight pipe section; 32, bent section; 40, heat source. Detailed Implementation

[0028] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] It should be noted that when an element is referred to as being "set on" or "connected to" another element, it can be directly on or indirectly on the other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] Please refer to the following: Figure 1 and Figure 2 The radiator provided by this utility model will now be described. The radiator includes a heat-conducting plate 10, a stacked heat sink 20, and a heat dissipation coil 30; the heat-conducting plate 10 abuts against the surface of the heat source body 40; the stacked heat sink 20 is disposed on the side surface of the heat-conducting plate 10 away from the heat source body 40; the heat dissipation coil 30 is inserted and fixed to the stacked heat sink 20, and the heat dissipation coil 30 is filled with a heat-conducting fluid.

[0031] It should be noted that the heat source 40 can be a lamp in the vehicle when it is in operation, or other heat-generating components such as a controller circuit board; the heat-conducting plate 10 is attached to the heat-generating surface of the heat source 40, and thermally conductive adhesive can be applied to the contact surface between the heat-conducting plate 10 and the heat source 40 to promote the heat conduction effect; the stacked heat sink 20 can be understood as a sheet-shaped or needle-shaped stacked structure with ventilation gaps between adjacent layers, thereby ensuring sufficient contact area with the air to achieve air heat dissipation; the heat dissipation coil 30 can be a hollow tube with good thermal conductivity, such as a copper tube or an aluminum tube, that is coiled in a serpentine or spiral shape; the heat-conducting fluid can be a coolant or a liquid metal with good thermal conductivity, such as a gallium indium tin alloy.

[0032] It should be understood that the principle by which the heat-conducting fluid gains flow momentum within the enclosed heat dissipation coil 30 is that the heat from the stacked heat sink 20 is transferred to the heat dissipation coil 30 and the part in direct contact with it through heat transfer. This causes the temperature of the heat-conducting fluid at this location to rise, while the temperature of the heat-conducting fluid further away from this location is lower. Due to the temperature difference of the heat-conducting fluid at different locations within the heat dissipation coil 30, thermal convection is formed, thereby driving the heat-conducting fluid to flow within the heat dissipation coil 30. The high-temperature heat-conducting fluid near the stacked heat sink 20 flows to the part away from the stacked heat sink 20 and dissipates heat to the air through the heat dissipation coil 30 in contact with the air, while the low-temperature heat-conducting fluid flows to the part near the stacked heat sink 20 to continue absorbing heat from that part. This process repeats, resulting in convective heat dissipation of the heat-conducting fluid. Since the heat dissipation coil 30 is inserted and fixed on the stacked heat sink 20, the installation of the heat dissipation coil 30 basically does not increase the overall structural volume, which can greatly save installation space compared to installing a cooling fan.

[0033] Compared with the prior art, the heat sink provided in this embodiment transfers the heat generated by the heat source 40 when the lamp is working to the stacked heat sink 20 through the heat conduction plate 10. The heat sink 20 dissipates heat to the air. On this basis, the heat dissipation coil 30 inserted on the stacked heat sink 20 can absorb heat. Then, the heat is quickly carried away from the contact point between the heat dissipation coil 30 and the stacked heat sink 20 by the flow of the heat conduction fluid in the heat dissipation coil 30, thereby achieving convection-assisted heat dissipation and improving the heat dissipation efficiency of the stacked heat sink 20. It is not only simple and compact in structure, but also saves the space occupied by the cooling fan, thus meeting the application requirements of compact heat dissipation structure and high heat dissipation efficiency.

[0034] In some embodiments, see Figure 2 The stacked heat sink 20 includes several spaced-apart heat sinks 200, each of which is connected to a heatsink coil 30. The spaced-apart heat sinks 200 create gaps between adjacent heat sinks 200, allowing airflow and ensuring that both sides of each heat sink 200 are in contact with air, thereby improving its heat dissipation. Furthermore, each heat sink 200 is directly connected to the heatsink coil 30 for heat transfer, ensuring that heat from each heat sink 200 is transferred to the corresponding part of the heatsink coil 30, where a heat-conducting fluid quickly removes the heat, improving heat dissipation efficiency.

[0035] As one specific embodiment of the heat sink 200 described above, please refer to Figure 1 and Figure 2The heat sink 200 is a corrugated ceramic sheet, and a corrugated connection is formed between the heat sink 200 and the heat-conducting plate 10. This corrugation can be a continuous wave, a square wave, or a trapezoidal wave. The corrugated structure of the heat sink 200 increases its surface area in contact with air within the same width, thereby improving heat dissipation efficiency. Furthermore, the ceramic sheet used in the heat sink 200 has a higher thermal conductivity than conventional copper or aluminum sheets. For example, the aluminum nitride ceramic used in the heat sink 200 has a thermal conductivity of up to 310 W / mK. This increases the rate of heat diffusion on the heat sink 200, resulting in more uniform heat dissipation, and also improves the efficiency of heat transfer from the heat sink 200 to the heatsink coil 30, thus increasing the efficiency of the heatsink coil 30 in assisting heat dissipation from the heat sink 200.

[0036] Furthermore, the waveform structure of the heat sink 200 can form a waveform connection trajectory by connecting its waveform boundary with the heat conduction plate 10, thereby increasing the connection contact area between the heat sink 200 and the heat conduction plate 10, thus improving the efficiency of heat transfer from the heat conduction plate 10 to the heat sink 200, and further improving the heat dissipation efficiency.

[0037] As one specific embodiment of the aforementioned heat dissipation coil 30, please refer to Figure 2 The heat dissipation coil 30 includes multiple straight pipe sections 31 and multiple curved sections 32. The straight pipe sections 31 and curved sections 32 are alternately connected to form a serpentine structure, and each straight pipe section 31 penetrates the stacked heat sink 20. The serpentine structure formed by the sequential connection of the straight pipe sections 31 and curved sections 32 can repeatedly penetrate the stacked heat sink 20, thereby increasing the path for heat transfer from the stacked heat sink 20 to the heat dissipation coil 30 and improving the efficiency of the heat dissipation coil 30 in assisting the heat dissipation of the stacked heat sink 20. On the other hand, it can also give the heat dissipation coil 30 a higher extension length, thereby increasing the filling amount of heat-conducting fluid and the contact area between the heat dissipation coil 30 and the air, thus improving the efficiency of heat dissipation of the heat dissipation coil 30 to the air. In addition, the arrayed straight pipe sections 31 can evenly transfer the heat on the stacked heat sink 20 to each heat dissipation coil 30, thereby improving the heat dissipation uniformity of the stacked heat sink 20.

[0038] For some possible implementations, please refer to [link / reference]. Figure 1 and Figure 2Multiple heat dissipation coils 30 are spaced apart on the stacked heat sink 20, and the straight pipe sections 31 of each heat dissipation coil 30 form an array distribution within the stacked heat sink 20. By setting multiple heat dissipation coils 30, the contact points formed by the straight pipe sections 31 on the stacked heat sink 20 can be arrayed, allowing heat from all locations on the heat sink 200 to be transferred to the heat dissipation coils 30 for auxiliary heat dissipation, thereby improving heat dissipation efficiency and heat dissipation uniformity. Of course, the aforementioned heat dissipation coils 30 can also be connected sequentially through transition joints to form an integral structure, while connecting the entire heat dissipation coil 30 end to end to form a closed-loop flow path inside, thereby improving the smoothness of heat dissipation fluid flow within the heat dissipation coils 30, and thus improving heat dissipation efficiency.

[0039] Specifically, the heat dissipation coil 30 used in this embodiment is a heat-conducting metal tube. The heat-conducting metal tube can be a copper tube or an aluminum tube, preferably a copper tube. The heat dissipation coil 30 serves as the heat transfer medium between the stacked heat sink 20 and the heat dissipation fluid, and also as the heat transfer medium between the heat dissipation fluid and the outside air. Using a copper tube can achieve higher heat transfer efficiency, thereby improving the auxiliary heat dissipation efficiency of the heat dissipation fluid.

[0040] Optionally, in this embodiment, the heat-conducting fluid is a liquid metal that forms convection within the heat dissipation coil 30 based on temperature difference. Specifically, the liquid metal can be a gallium indium tin alloy with a thermal conductivity of approximately 100 W / mK and good fluidity. The choice of liquid metal as the heat-conducting fluid is based on two factors: firstly, its good thermal conductivity enables rapid heat exchange; secondly, its good fluidity allows for thermal convection based on temperature difference, thus enabling the heat-conducting fluid to flow efficiently within the heat dissipation coil 30 and continuously remove heat, thereby improving heat dissipation efficiency.

[0041] For example, the heat-conducting plate 10 is a graphene sheet. The thermal conductivity of graphene material can reach over 5000 W / mK. By utilizing the ultra-high thermal conductivity of the graphene sheet, the heat emitted by the heat source 40 can be quickly transferred to the stacked heat sink 20, thereby avoiding the heat source 40's inability to dissipate heat in time and affecting its performance, and thus improving the working stability of the heat source 40, such as vehicle lights.

[0042] Based on the same inventive concept, combined with Figures 1 to 2 It is understood that this application also provides a vehicle lighting assembly, including the aforementioned radiator.

[0043] Compared with the prior art, the vehicle lighting assembly provided by this utility model adopts the above-mentioned heat sink, which can absorb heat by means of the heat sink coil 30 inserted on the stacked heat sink 20, on the basis of the heat dissipation of the stacked heat sink 20 itself. Then, the heat is quickly carried away from the contact position between the heat sink coil 30 and the stacked heat sink 20 by the flow of the heat-conducting fluid in the heat sink coil 30, thereby realizing convection-assisted heat dissipation and improving the heat dissipation efficiency of the stacked heat sink 20. It is not only simple and compact in structure, but also saves the space occupied by the cooling fan. Thus, it meets the requirements of vehicle lighting assembly for compact heat dissipation structure and high heat dissipation efficiency, which is conducive to improving the efficiency and quality of vehicle lighting assembly.

[0044] Based on the same inventive concept, this application also provides a vehicle including the above-described vehicle light assembly.

[0045] Compared with the prior art, the vehicle provided by this utility model adopts a headlight assembly with the aforementioned radiator. Based on the heat dissipation of the stacked heat sink 20 itself, the heat dissipation coil 30 inserted on the stacked heat sink 20 absorbs heat, and then the heat is quickly carried away from the contact point between the heat dissipation coil 30 and the stacked heat sink 20 by the flow of the heat-conducting fluid within the heat dissipation coil 30, thereby achieving convection-assisted heat dissipation. This improves the heat dissipation efficiency of the stacked heat sink 20. Not only is the structure simple and compact, but it also saves the space occupied by a cooling fan, thus meeting the headlight assembly's requirements for a compact and efficient heat dissipation structure. This is beneficial for improving the efficiency and quality of the headlight assembly, thereby increasing market feedback satisfaction with the vehicle.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 radiator, characterized in that, It includes a heat-conducting plate (10), a stacked heat sink (20), and a heat dissipation coil (30); the heat-conducting plate (10) abuts against the surface of the heat source body (40); the stacked heat sink (20) is disposed on the side surface of the heat-conducting plate (10) away from the heat source body (40); the heat dissipation coil (30) is inserted and fixed to the stacked heat sink (20), and the heat dissipation coil (30) is filled with a heat-conducting fluid.

2. The radiator as described in claim 1, characterized in that, The stacked heat sink (20) includes a plurality of spaced heat sinks (200), each of which is connected to the heat sink coil (30).

3. The radiator as described in claim 2, characterized in that, The heat sink (200) is a corrugated ceramic sheet, and a corrugated connection trajectory is formed between the heat sink (200) and the heat-conducting plate (10).

4. The radiator as described in claim 1, characterized in that, The heat dissipation coil (30) includes multiple straight pipe sections (31) and multiple curved sections (32). Each of the straight pipe sections (31) and each of the curved sections (32) are connected alternately to form a serpentine structure, and each of the straight pipe sections (31) penetrates the stacked heat sink (20).

5. The radiator as described in claim 4, characterized in that, The stacked heat sink (20) is provided with a plurality of heat sink coils (30) spaced apart, and the straight pipe sections (31) of each heat sink coil (30) are arranged in an array within the stacked heat sink (20).

6. The radiator as described in claim 1, characterized in that, The heat dissipation coil (30) is a heat-conducting metal tube.

7. The radiator as described in claim 1, characterized in that, The heat-conducting fluid is a liquid metal that forms convection within the heat dissipation coil (30) based on temperature difference.

8. The radiator according to any one of claims 1-7, characterized in that, The heat-conducting plate (10) is a graphene plate.

9. A vehicle headlight assembly, characterized in that, Includes the heat sink as described in any one of claims 1-8.

10. A vehicle, characterized in that, Including the headlight assembly as described in claim 9.

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