Heat dissipation structure and electronic rearview mirror

Abstract

The utility model relates to the technical field of rearview mirrors, in particular to a heat dissipation structure and an electronic rearview mirror, the heat dissipation structure comprises a micro heat pipe network, the micro heat pipe network is arranged in a shell of the electronic rearview mirror, and one end of the micro heat pipe network is in contact with a heat source; the heat dissipation end is arranged in the electronic rearview mirror shell and makes contact with the other end of the micro heat pipe network, the heat dissipation end comprises a plurality of heat dissipation fins, and the heat dissipation fins at least partially extend out of the electronic rearview mirror shell. According to the electronic rearview mirror, heat is conducted to the heat dissipation end from the electronic element through the micro heat pipe network, and the heat dissipation fins partially extend out of the shell to improve the heat dissipation efficiency, so that the heat can be efficiently diffused into the environment, and meanwhile, the occupation of the internal space of the electronic rearview mirror is reduced as much as possible. The heat conduction efficiency of the micro heat pipe is higher, and heat can be quickly conducted to be dissipated from a heat source; the micro heat pipes can be bent or optimally arranged according to the internal structure layout, so that the heat dissipation ends are reasonably distributed inside and outside the mirror shell, and the heat dissipation capability is improved.

Description

Technical Field

[0001] This utility model relates to the field of rearview mirror technology, and in particular to a heat dissipation structure and an electronic rearview mirror. Background Technology

[0002] With the development of intelligent vehicles and advanced driver assistance systems, electronic rearview mirrors are gradually replacing traditional rearview mirrors. Electronic rearview mirrors integrate multiple functions such as display, image acquisition, and signal processing. Their internal electronic components generate a lot of heat during operation. If heat dissipation is poor, it can easily lead to overheating, performance degradation, and even affect driving safety.

[0003] Most existing electronic rearview mirrors fail to effectively integrate heat dissipation structures, resulting in low heat dissipation efficiency and large structural space requirements. A new type of heat dissipation structure is urgently needed to solve these problems.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] This invention provides a heat dissipation structure and an electronic rearview mirror, thereby effectively solving the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a heat dissipation structure, comprising:

[0007] A micro heat pipe network is disposed inside the housing of the electronic rearview mirror, with one end of the network in contact with a heat source;

[0008] The heat dissipation end is disposed inside the electronic rearview mirror housing and is in contact with the other end of the micro heat pipe network. The heat dissipation end includes a plurality of heat dissipation fins, and the plurality of heat dissipation fins extend at least partially outside the electronic rearview mirror housing.

[0009] Furthermore, several of the heat dissipation fins are arranged in parallel, and a heat exchange channel is included between adjacent heat dissipation fins.

[0010] Furthermore, the length of the heat dissipation channel extends parallel to the length direction of the vehicle.

[0011] Furthermore, several of the aforementioned heat dissipation fins extend partially from the bottom of the electronic rearview mirror housing to the outside of the housing.

[0012] Furthermore, the portion of the heat dissipation fins extending outside the electronic rearview mirror housing is configured with arc-shaped structures at both ends in the length direction.

[0013] Furthermore, the portion of the heat dissipation fins extending outside the electronic rearview mirror housing includes at least two straight segments between the two arc-shaped structures, with the included angle between two adjacent straight segments being greater than or equal to 150°.

[0014] Furthermore, the end of the heat dissipation end that is in contact with the micro heat pipe network is planar.

[0015] Furthermore, the micro heat pipe network is configured as a grid at the point where it contacts the heat dissipation end.

[0016] This utility model also includes an electronic rearview mirror, which includes the heat dissipation structure described above.

[0017] The beneficial effects of this invention are as follows: Heat is conducted from electronic components to the heat dissipation end through a micro heat pipe network, and the heat dissipation fins extend to the outside of the housing to improve heat dissipation efficiency. This allows for efficient heat dissipation into the environment while minimizing the space occupied inside the electronic rearview mirror. Compared to ordinary thermally conductive materials (such as aluminum or copper), micro heat pipes have higher thermal conductivity, rapidly transferring heat from the heat source to the heat dissipation end. The micro heat pipes can be bent or optimized according to the internal structural layout, ensuring a reasonable distribution of the heat dissipation end inside and outside the mirror housing, thus improving heat dissipation capacity. Compared to active cooling methods such as fans, the combination of micro heat pipes and fins saves more space and is suitable for the compact design of electronic rearview mirrors. Furthermore, the absence of an externally powered fan reduces power consumption, avoids noise and mechanical wear caused by fan operation, and extends the heat dissipation fins to the outside of the housing, utilizing vehicle movement to increase heat exchange. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the heat dissipation structure;

[0020] Figure 2 This is a schematic diagram of the heat dissipation fins.

[0021] Figure 3 This is a side view of the electronic rearview mirror;

[0022] Figure 4 This is a schematic diagram of the bottom structure of an electronic rearview mirror. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] like Figures 1 to 2 As shown: A heat dissipation structure, comprising:

[0025] Micro heat pipe network 1 is disposed inside the housing of the electronic rearview mirror, and one end of the micro heat pipe network 1 is in contact with a heat source;

[0026] The heat dissipation end 2 is disposed inside the electronic rearview mirror housing and is in contact with the other end of the micro heat pipe network 1. The heat dissipation end 2 includes a plurality of heat dissipation fins 21, which at least partially extend outside the electronic rearview mirror housing.

[0027] Heat is conducted from electronic components to heat dissipation end 2 via a micro heat pipe network 1, and the heat dissipation fins 21 extend partially outside the housing to improve heat dissipation efficiency. This allows for efficient heat dissipation into the environment while minimizing the space occupied inside the electronic rearview mirror. Compared to ordinary thermally conductive materials (such as aluminum or copper), micro heat pipes have higher thermal conductivity, rapidly transferring heat from the heat source to the heat dissipation end. The micro heat pipes can be bent or optimized according to the internal structural layout, ensuring that the heat dissipation end 2 is rationally distributed inside and outside the mirror housing, improving heat dissipation capacity. Compared to active cooling methods such as fans, the combination of micro heat pipes and fins is more space-saving and suitable for the compact design of electronic rearview mirrors. Furthermore, the elimination of the need for an externally powered fan reduces power consumption and avoids noise and mechanical wear associated with fan operation. The extension of the heat dissipation fins 21 outside the housing utilizes vehicle movement to increase heat exchange.

[0028] In this embodiment, a plurality of heat dissipation fins 21 are arranged in parallel, and a heat exchange channel is included between adjacent heat dissipation fins 21.

[0029] By arranging the heat dissipation fins 21 in parallel and setting heat exchange channels between them, the heat dissipation efficiency is further improved. The heat exchange channels can guide airflow and form natural convection, thereby accelerating heat dissipation. When the vehicle is in motion, the airflow can pass through these channels more effectively, carrying away more heat and improving the heat dissipation effect.

[0030] The parallel arrangement of the fins increases the heat dissipation area, allowing heat to be quickly conducted to a larger surface area and diffused into the air. Compared to individual heat sinks, this arrangement creates a more uniform heat dissipation effect and reduces the risk of localized overheating.

[0031] Furthermore, it optimizes space utilization; the heat exchange channels between the fins can maximize heat dissipation within a limited space without increasing the size of the electronic rearview mirror.

[0032] Since electronic rearview mirrors typically need to maintain a streamlined design, this structure can enhance heat dissipation without compromising aesthetics and aerodynamic performance.

[0033] The length of the heat dissipation channel extends parallel to the length of the vehicle.

[0034] When a vehicle is in motion, air flows along its length. This design allows air to flow more easily through the cooling channels, improving heat dissipation efficiency. Compared to fins arranged perpendicular to the direction of travel, this method reduces airflow turbulence, making the electronic rearview mirror more aerodynamic. Because the fins and micro-heatpipes follow the same heat conduction path, heat can be evenly distributed along the cooling channels, reducing the likelihood of localized overheating areas. Electronic rearview mirrors are typically long and narrow, and this design allows for a better fit to the vehicle's shape without adding extra bulk to the casing.

[0035] As a preferred embodiment of the above, a plurality of heat dissipation fins 21 extend partially from the bottom of the electronic rearview mirror housing to the outside of the housing.

[0036] When the vehicle is in motion, the exposed fins at the bottom are directly exposed to the high-speed airflow, creating forced convection cooling and greatly improving heat dissipation efficiency. The bottom is a relatively concealed location, preserving the overall streamlined design of the electronic rearview mirror while utilizing a low-drag area to guide airflow through the fins. The fins extend from the bottom, avoiding impact on the overall appearance of the electronic rearview mirror and reducing the direct impact of external environmental factors (such as rain and dust) on the fins. Furthermore, the heat dissipation fins 21 also serve as part of the structural support, enhancing the overall rigidity of the electronic rearview mirror while preventing the fins from being easily damaged due to excessive exposure.

[0037] In this embodiment, the portion of the heat dissipation fins 21 extending outside the electronic rearview mirror housing is respectively configured with arc-shaped structures 211 at both ends in the length direction.

[0038] The curved transition at both ends of the fins reduces wind resistance, prevents high-speed airflow from forming turbulence around the fins, and improves the overall streamlined design. When the vehicle is in motion, air flows along the body, and the curved structure 211 can guide the airflow more smoothly through the heat dissipation fins 21, reducing airflow separation and improving convective heat transfer.

[0039] As a preferred embodiment of the above, the portion of the heat dissipation fins 21 extending outside the electronic rearview mirror housing includes at least two straight segments 212 between the two arc-shaped structures 211, and the included angle between two adjacent straight segments 212 is greater than or equal to 150°.

[0040] Traditional single straight fins are prone to vibration or even resonance under the impact of high-speed airflow, which affects the stability of electronic rearview mirrors. After being subjected to airflow impact for a long time, the fins may fatigue and break due to stress concentration. The multi-segment straight structure with arc shape and large angle can evenly distribute stress and improve the service life of the fins.

[0041] Among them, the end of the heat dissipation end 2 that is attached to the micro heat pipe network 1 is a plane 22.

[0042] Traditional point contact or irregular contact methods can lead to high local thermal resistance and reduced heat conduction efficiency. The planar 22 bonding design allows the micro heat pipe to make close contact with the heat dissipation end 2, ensuring that heat is evenly transferred to the heat dissipation fins 21 and improving overall heat dissipation efficiency. Furthermore, adding thermal grease or thermal interface material (TIM) to the contact surface can further reduce contact thermal resistance and increase the heat transfer speed.

[0043] After the micro heat pipe network 1 and the heat dissipation end 2 are attached to each other on a flat surface 22, the overall structure is more stable and less prone to loosening or deformation due to external vibration or airflow impact. It is also easy to fix by welding, thermally conductive adhesive bonding or press-fitting, which improves mechanical stability and meets the needs of long-term use.

[0044] In this embodiment, the micro heat pipe network 1 is configured as a grid at the point where it contacts the heat dissipation end 2.

[0045] Traditional single or distributed micro heat pipes may lead to uneven heat distribution, while the grid structure can evenly cover the entire heat dissipation end 2, improve temperature uniformity, and avoid local overheating. The grid micro heat pipe can quickly conduct heat to the entire heat dissipation structure, so that all areas of the heat dissipation fins 21 can dissipate heat efficiently without causing overheating areas due to uneven local heat transfer.

[0046] like Figures 3 to 4 As shown, this embodiment also includes an electronic rearview mirror, which includes the heat dissipation structure described above.

[0047] Heat is conducted from electronic components to heat dissipation end 2 via a micro heat pipe network 1, and the heat dissipation fins 21 extend partially outside the housing to improve heat dissipation efficiency. This allows for efficient heat dissipation into the environment while minimizing the space occupied inside the electronic rearview mirror. Compared to ordinary thermally conductive materials (such as aluminum or copper), micro heat pipes have higher thermal conductivity, rapidly transferring heat from the heat source to the heat dissipation end. The micro heat pipes can be bent or optimized according to the internal structural layout, ensuring that the heat dissipation end 2 is rationally distributed inside and outside the mirror housing, improving heat dissipation capacity. Compared to active cooling methods such as fans, the combination of micro heat pipes and fins is more space-saving and suitable for the compact design of electronic rearview mirrors. Furthermore, the elimination of the need for an externally powered fan reduces power consumption and avoids noise and mechanical wear associated with fan operation. The extension of the heat dissipation fins 21 outside the housing utilizes vehicle movement to increase heat exchange.

[0048] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0051] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A heat dissipation structure, characterized in that, include: A micro heat pipe network is disposed inside the housing of the electronic rearview mirror, with one end of the network in contact with a heat source; The heat dissipation end is disposed inside the electronic rearview mirror housing and is in contact with the other end of the micro heat pipe network. The heat dissipation end includes a plurality of heat dissipation fins, and the plurality of heat dissipation fins extend at least partially outside the electronic rearview mirror housing.

2. The heat dissipation structure according to claim 1, characterized in that, The heat dissipation fins are arranged in parallel, and a heat exchange channel is included between adjacent heat dissipation fins.

3. The heat dissipation structure according to claim 2, characterized in that, The length of the heat exchange channel extends parallel to the length of the vehicle.

4. The heat dissipation structure according to claim 1, characterized in that, Several of the aforementioned heat dissipation fins extend partially from the bottom of the electronic rearview mirror housing to the outside of the housing.

5. The heat dissipation structure according to claim 4, characterized in that, The portion of the heat dissipation fins extending outside the electronic rearview mirror housing is configured with arc-shaped structures at both ends along its length.

6. The heat dissipation structure according to claim 5, characterized in that, The portion of the heat dissipation fins extending outside the electronic rearview mirror housing includes at least two straight segments between the two arc-shaped structures, with the included angle between two adjacent straight segments being greater than or equal to 150°.

7. The heat dissipation structure according to claim 1, characterized in that, The end of the heat dissipation end that is in contact with the micro heat pipe network is a plane.

8. The heat dissipation structure according to claim 7, characterized in that, The micro heat pipe network is configured as a grid at the point where it contacts the heat dissipation end.

9. An electronic rearview mirror, characterized in that, Includes the heat dissipation structure as described in any one of claims 1 to 8.

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