Automobile and automobile event data recorder

Abstract

The application provides a driving recorder and a vehicle, and relates to the technical field of automobiles. The driving recorder comprises a shell, a circuit board and a heat dissipation assembly. The shell has a heat dissipation opening, and the circuit board is arranged in the shell. The heat dissipation assembly comprises a heat dissipation piece and a fan. The first surface of the heat dissipation piece faces the circuit board, and the second surface of the heat dissipation piece is provided with a heat dissipation channel. The air inlet side of the fan is in communication with the heat dissipation channel, and the second end of the fan can be in communication with the outside of the shell through the heat dissipation opening. The application can improve the heat dissipation effect of the driving recorder and ensure the normal use of the driving recorder.

Description

Technical Field

[0001] This application relates to the field of automobiles, and more particularly to a dashcam and a vehicle. Background Technology

[0002] A dashcam is an important component of a vehicle, capable of continuously recording images, sounds, time, speed, and other information during driving through cameras and other functional components installed on the vehicle body.

[0003] A dashcam includes a housing and a circuit board inside the housing to receive signals from components such as the camera. However, dashcams operate for extended periods, and heat buildup can easily occur on the circuit board inside, affecting the normal operation of the dashcam. Utility Model Content

[0004] This application provides a dashcam and a vehicle to solve the problem that heat buildup on the circuit board inside the dashcam affects its normal operation.

[0005] The dashcam provided in this application includes a housing, a circuit board, and a heat dissipation assembly;

[0006] The housing has heat dissipation vents, and the circuit board is disposed inside the housing;

[0007] The heat dissipation assembly includes a heat sink and a fan. The first surface of the heat sink faces the circuit board, and the second surface of the heat sink is provided with a heat dissipation channel.

[0008] The air inlet side of the fan is connected to the heat dissipation channel, and the air outlet side of the fan can be connected to the outside of the housing through the heat dissipation port.

[0009] By adopting the above technical solution, the first surface of the heat sink faces the circuit board, allowing the heat generated by the circuit board to be transferred to the heat sink. Furthermore, the air intake side of the fan is connected to the heat dissipation channel, enabling air drawn in from the intake side to flow directly or indirectly into the heat dissipation channel. When the fan operates, a negative pressure is generated within the heat dissipation channel, driving cooler external air to flow through it, thus carrying away the heat from the heat sink.

[0010] The fan's exhaust side can connect to the outside of the housing through the heat dissipation vent. The hot air that passes through the heat dissipation channel and carries away heat will be drawn in or blown out by the fan and finally discharged from the fan's exhaust side. The discharged hot air can flow smoothly to the outside of the housing through the heat dissipation vent on the housing, completing the entire heat dissipation cycle, ensuring that the hot air is efficiently discharged from the housing and avoiding stagnation inside the housing.

[0011] The heat generated by the circuit board is absorbed by the heat sink, and the air is driven by the fan to flow through the heat dissipation channels set on the heat sink. Finally, the hot air is exhausted outside the housing through the heat dissipation vents on the housing, forming a forced convection heat dissipation cycle. This can efficiently and quickly reduce the temperature inside the housing, reduce the heat buildup on the circuit board inside the housing due to long-term operation, and thus ensure that the dashcam can operate stably and reliably for a long time.

[0012] In some possible implementations, the heat sink includes a body and a plurality of heat sinks, wherein a first surface of the body is attached to the circuit board;

[0013] Multiple heat sinks are disposed on the second surface of the main body, and the multiple heat sinks are arranged sequentially at intervals, with heat dissipation channels formed between adjacent heat sinks.

[0014] In some possible implementations, the heat sink extends along a first direction;

[0015] The heat dissipation channel formed by two adjacent heat dissipation plates extends along the first direction, and the heat dissipation channel has openings at both ends along the first direction.

[0016] In some possible implementations, the fan is positioned opposite to the main body;

[0017] The housing is provided with an air inlet, and at least part of the air inlet is arranged opposite to the opening of the heat dissipation channel, so that the air intake side of the fan can draw air in from the air inlet through the heat dissipation channel.

[0018] In some possible implementations, the number of air inlets is multiple, and the multiple air inlets include a first air inlet and a second air inlet;

[0019] The first air inlet is connected to the opening of the heat dissipation channel, and the second air inlet faces the heat dissipation plate.

[0020] In some possible implementations, the housing includes a first sidewall and a second sidewall connected to each other;

[0021] The first sidewall is perpendicular to the second sidewall, the first air inlet is located on the first sidewall, and the second air inlet is located on the second sidewall.

[0022] In some possible implementations, the air intake side of the fan abuts against the end of the heat sink away from the main body, and the fan can close at least part of the heat dissipation channel.

[0023] In some possible implementations, the heat sink is integrally formed with the main body; and / or, the heat sink is a metal heat sink.

[0024] In some possible implementations, the housing includes an upper cover and a lower cover, which are detachably connected;

[0025] The circuit board is disposed on the lower cover, and the heat dissipation vent is disposed on the upper cover;

[0026] The fan is provided with a circular air outlet, and the heat dissipation port is provided with a circular heat dissipation port. The circular heat dissipation port and the circular air outlet are coaxially arranged.

[0027] The circular heat dissipation vent is provided with multiple support members, which are connected to the inner wall of the circular heat dissipation vent, and the multiple support members can separate the circular heat dissipation vent.

[0028] This application provides a vehicle that includes the dashcam described in any of the above embodiments.

[0029] Since the vehicle provided in this application embodiment includes any of the driving recorders described above, the vehicle in this application embodiment has the advantages of any of the driving recorders described above, which can be referred to above for details, and will not be repeated here. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0031] Figure 1 This is a schematic diagram of the structure of a dashcam provided in an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the heat dissipation assembly and housing provided in the embodiments of this application;

[0033] Figure 3 This is a schematic diagram of the structure of the top cover provided in an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the upper cover from another perspective, provided as an embodiment of this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100. Shell;

[0037] 110. Top cover; 120. Bottom cover; 101. First air inlet; 102. Second air inlet; 103. Heat dissipation vent; 104. Support component;

[0038] 200. Circuit board;

[0039] 300. Camera;

[0040] 400. Heat dissipation components;

[0041] 410. Heat sink; 411. Main body; 412. Heat sink plate; 413. Heat dissipation channel; 420. Fan.

[0042] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0043] As described in the background section, a dashcam is an important component of a vehicle, continuously recording images, sounds, time, speed, and other information during driving through cameras and other functional components installed on the vehicle body. In the event of a traffic accident or other incidents, the dashcam can clearly reconstruct the accident scene, thus facilitating the effective protection of one's rights.

[0044] A dashcam includes a housing and a circuit board inside the housing. The circuit board receives signals from functional components such as the camera, allowing the image signals captured by the camera to be transmitted to the circuit board and then to the storage device. However, due to the long operating time of dashcams, heat buildup can easily occur on the circuit board inside, affecting the normal operation of the dashcam.

[0045] For example, when the ambient temperature of the dashcam is higher than or equal to 75 degrees Celsius, such as when the ambient temperature of the dashcam is 85 degrees Celsius, the internal heat dissipation of the dashcam is poor, which makes the dashcam prone to damage.

[0046] To address the aforementioned technical problems, this application provides a dashcam and a vehicle. The dashcam includes a housing, a circuit board, and a heat dissipation assembly. The housing has a heat dissipation vent, and the circuit board is disposed within the housing. The heat dissipation assembly includes a heat sink and a fan. The first surface of the heat sink faces the circuit board, and the second surface of the heat sink has a heat dissipation channel. The air intake side of the fan is connected to the heat dissipation channel, and the second end of the fan can be connected to the outside of the housing through the heat dissipation vent.

[0047] The first surface of the heat sink faces the circuit board, allowing heat generated by the circuit board to be transferred to the heat sink. Furthermore, the fan's intake side is connected to the heat dissipation channel, enabling air drawn in from the intake side to flow directly or indirectly into the channel. When the fan operates, it creates a negative pressure within the heat dissipation channel, forcing cooler external air to flow through it and carry away heat from the heat sink.

[0048] The fan's exhaust side can connect to the outside of the housing through the heat dissipation vent. The hot air that passes through the heat dissipation channel and carries away heat will be drawn in or blown out by the fan and finally discharged from the fan's exhaust side. The discharged hot air can flow smoothly to the outside of the housing through the heat dissipation vent on the housing, completing the entire heat dissipation cycle, ensuring that the hot air is efficiently discharged from the housing and avoiding stagnation inside the housing.

[0049] The heat generated by the circuit board is absorbed by the heat sink, and the air is driven by the fan to flow through the heat dissipation channels set on the heat sink. Finally, the hot air is exhausted outside the housing through the heat dissipation vents on the housing, forming a forced convection heat dissipation cycle. This can efficiently and quickly reduce the temperature inside the housing, reduce the heat buildup on the circuit board inside the housing due to long-term operation, and thus ensure that the dashcam can operate stably and reliably for a long time.

[0050] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0051] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0052] Reference Figures 1-4 The dashcam provided in this application includes a housing 100 and a circuit board 200. The housing 100 can be used to house and protect internal components.

[0053] The circuit board 200 is disposed inside the housing 100. The circuit board 200 can carry electronic components and realize the core components of signal processing and control. For example, the circuit board 200 can be used to acquire signals collected by external functional components such as the camera 300.

[0054] For example, the dashcam also includes a heat dissipation assembly 400. The heat dissipation assembly 400 is a functional structure that can effectively conduct and dissipate the heat generated by the circuit board 200 to the outside of the dashcam. The housing 100 has a heat dissipation vent 103, which is an opening structure that penetrates the wall of the housing 100, and can form an air circulation path between the inside of the housing 100 and the external environment, providing a channel for heat dissipation.

[0055] The heat dissipation assembly 400 includes a heat sink 410 and a fan 420. The heat sink 410 can be configured as a component with good thermal conductivity, for example, it can be made of a metal material such as aluminum or copper, absorbing and transferring heat through thermal conduction. The fan 420 is a device that can drive airflow to force convection and accelerate the heat exchange process of the heat sink 410.

[0056] Reference Figures 1-4 In some possible implementations, the heat sink 410 has a first surface and a second surface disposed opposite to each other. The first surface of the heat sink 410 faces the circuit board 200.

[0057] It should be noted that "orientation" can be understood as the surface being opposite to the circuit board 200. There can be a certain gap between the heat sink 410 and the circuit board 200, or they can be in direct contact, so that the heat generated by the circuit board 200 when it is working can be received and absorbed by the heat sink 410 through radiation, conduction (e.g., through air or direct contact).

[0058] The second surface of the heat sink 410 is provided with a heat dissipation channel 413. The heat dissipation channel 413 is a specific structure formed on the second surface of the heat sink 410, such as grooves or ravines arranged in parallel or non-parallel manner, or air ducts formed by multiple parallel heat sinks 412 spaced apart.

[0059] The heat dissipation channel 413 increases the contact area between the heat sink 410 and the air, and guides the air to flow along a specific path, thereby improving heat exchange efficiency. The fan 420 has an intake side and an exhaust side. The intake side is the side where the fan 420 draws in air, and the exhaust side is the side where the fan 420 exhausts air.

[0060] The air intake side of the fan 420 is connected to the heat dissipation channel 413, establishing a connection in the airflow path, so that the air drawn in from the air intake side can flow directly or indirectly to the heat dissipation channel 413.

[0061] For example, the fan 420 can be installed near the heat sink 410, with the air intake side of the fan 420 facing the outlet of the heat dissipation channel 413. When the fan 420 is working, it will generate a negative pressure in the heat dissipation channel 413, driving cooler external air to flow through the heat dissipation channel 413 and carrying away the heat on the heat sink 410. The fan 420 can also be placed at the inlet end of the heat dissipation channel 413, drawing in air through the air intake side and blowing the air into the heat dissipation channel 413.

[0062] The exhaust side of fan 420 can connect to the outside of housing 100 through heat dissipation vent 103. Hot air that has passed through heat dissipation channel 413 and carried away heat will be drawn in or blown out by fan 420 and discharged from the exhaust side of fan 420. The discharged hot air can flow smoothly to the outside of housing 100 through heat dissipation vent 103, completing the entire heat dissipation cycle. The exhaust side of fan 420 can be set close to heat dissipation vent 103, or connected to heat dissipation vent 103 through a structure such as an air guide shroud, to ensure that hot air is efficiently discharged from housing 100 and avoids stagnation inside housing 100.

[0063] In some possible implementations, the housing 100 may include an upper cover 110 and a lower cover 120. The upper cover 110 and the lower cover 120 are housing 100 components that constitute the main appearance and protective space of the housing 100, and the upper and lower covers can be detachably connected.

[0064] For example, the upper and lower shells can be connected by snap-fit ​​or screw fastening, which provides a convenient access for the assembly, maintenance or replacement of internal components. Operators can directly access the internal circuit board 200 and heat dissipation component 400 by simply separating the upper cover 110 from the lower cover 120, thereby simplifying the production and maintenance process.

[0065] The circuit board 200 can be mounted on the lower cover 120. For example, the circuit board 200 can be fixedly mounted on the inner bottom surface of the lower cover 120 by means of screws, slots, or positioning posts. The lower cover 120 usually serves as a load-bearing base, providing a stable mounting base for the circuit board 200 and ensuring that the circuit board 200 will not be displaced or damaged due to vibration during vehicle operation.

[0066] The heat dissipation vent 103 can be provided on the upper cover 110. The heat dissipation vent 103 can be configured as an opening structure for connecting the interior of the housing 100 with the external environment to achieve gas exchange. By opening the heat dissipation vent 103 on the upper cover 110, it can be matched with the air outlet position of the fan 420 in the heat dissipation assembly 400.

[0067] Since the fan 420 drives the flow of hot air, the hot air ultimately needs to be exhausted from the housing 100. By placing the heat dissipation vent 103 on the top cover 110, the hot air can be more smoothly exhausted to the outside of the housing 100 through the opening on the top cover 110, taking advantage of the natural upward trend. The heat dissipation vent 103 can be located on the side or top of the top cover 110, depending on the installation position of the fan 420 and the airflow guidance design.

[0068] By designing the housing 100 as a detachable upper cover 110 and lower cover 120, and fixing the circuit board 200 to the lower cover 120, while the heat dissipation vent 103 is located on the upper cover 110, a modular assembly structure is achieved. During assembly, the circuit board 200 and related heat dissipation components 400 can be installed on the lower cover 120 first, and then the upper cover 110 can be closed and fixed on the lower cover 120, making the assembly process of the housing 100 simpler and more convenient.

[0069] Reference Figures 1-4 In some possible implementations, the heat sink 410 can absorb the heat generated by the circuit board 200 and conduct the heat to the air outside the housing 100 via the fan 420.

[0070] For example, the heat sink 410 may include a body 411 and a plurality of heat sinks 412. The body 411 is configured as a basic support portion, and the body 411 may be generally plate-shaped to facilitate assembly and thermal contact with other components. The plurality of heat sinks 412 are sheet-like structures extending from the surface of the body 411 to significantly expand the heat dissipation area.

[0071] The first surface of the main body 411 is attached to the circuit board 200. The main body 411 and the circuit board 200 can be in direct contact, or they can be connected by filling the space between them with a thermally conductive medium such as thermal grease or a thermal pad to fill the microscopic gaps on the contact surface and reduce the contact thermal resistance.

[0072] Multiple heat sinks 412 are disposed on the second surface of the main body 411. The second surface is typically the side of the main body 411 opposite to the first surface. The multiple heat sinks 412 are arranged sequentially at intervals, so that the space between adjacent heat sinks 412 is naturally constructed into a heat dissipation channel 413 for airflow. The cross-sectional shape, length, and orientation of the heat dissipation channel 413 are determined by the shape and arrangement of the heat sinks 412.

[0073] For example, the heat sink 412 can be arranged in parallel on the second surface of the main body 411, so that the heat dissipation channel 413 formed is a straight channel that is parallel to each other, which is conducive to the smooth straight flow of air and reduces wind resistance.

[0074] Efficient heat conduction is achieved by attaching the main body 411 of the heat sink 410 to the circuit board 200. Multiple heat sinks 412 spaced apart on the second surface of the main body 411 form heat dissipation channels 413, effectively conducting and distributing the heat emitted by the circuit board 200 over a larger area. When the fan 420 operates, air is guided through these heat dissipation channels 413 formed by the heat sinks 412, allowing for sufficient heat exchange with the high-temperature surface of the heat sinks 412, thereby rapidly removing heat.

[0075] For example, the heat sink 412 may extend along a first direction. The first direction may be used to describe the reference direction of the length orientation of the heat sink 412, that is, the direction in which the heat sink 412 extends in the length dimension.

[0076] The heat sink 412 has a predetermined length, and the heat sink 412 can be in the shape of a long strip. The direction of the long strip is defined as the first direction, which can provide a clear directional path for the airflow, so that the air can flow smoothly along the length of the heat sink 412.

[0077] Based on the structure of the heat sink 412 extending along the first direction, the heat dissipation channel 413 formed between two adjacent heat sinks 412 extends along the first direction. The heat dissipation channel 413 can be configured as an elongated space enclosed by the opposite sidewalls of the adjacent heat sinks 412 and the second surface of the main body 411, and the extending direction of the heat dissipation channel 413 is consistent with the extending direction of the heat sink 412.

[0078] The heat dissipation channel 413 may have openings at both ends along the first direction. At the beginning and end of the heat dissipation channel 413, that is, at the two ends along the extension direction of the heat dissipation channel 413, it is not closed by other structures, but remains open.

[0079] By extending the heat sink 412 along the first direction and the heat dissipation channel 413 also extending along the first direction with openings at both ends, a clear airflow path with a well-defined direction and clear inlet and outlet is constructed. This effectively regulates the direction of airflow, avoids airflow turbulence and backflow, and ensures that the air flowing through the heat sink 412 can flow continuously and stably in the predetermined direction, thereby improving the convective heat transfer effect of the heat dissipation channel 413.

[0080] In some possible implementations, the fan 420 may be disposed opposite to the body 411, with the body 411 portion of the fan 420 and the second surface of the body 411 or the heat dissipation channel 413 thereon facing each other in space, thereby creating conditions for establishing a direct or indirect airflow connection between the fan 420 and the heat dissipation channel 413, so that the fan 420 can effectively act on the air in the heat dissipation channel 413.

[0081] For example, the housing 100 may be provided with an air inlet. The air inlet serves as an entrance for relatively low-temperature external air to enter the interior of the housing 100, providing a continuous cooling medium for the heat dissipation cycle.

[0082] At least a portion of the air inlet is positioned opposite to the opening of the heat dissipation channel 413. At least a portion of the air inlet overlaps or is directly opposite the opening area of ​​the heat dissipation channel 413 along the first direction in terms of spatial projection. This shortens the path of external air into the heat dissipation channel 413, allowing external cold air to be guided to the inlet of the heat dissipation channel 413 and reducing disordered diffusion and travel loss of airflow within the housing 100.

[0083] The air intake side of the fan 420 can draw air in through the air inlet via the heat dissipation channel 413. After the fan 420 is started, a negative pressure is generated on the air intake side of the fan 420. The negative pressure acts on the inside of the heat dissipation channel 413, and then draws air from outside the housing 100 through the opening of the heat dissipation channel 413 and the opposite air inlet.

[0084] By setting the fan 420 opposite to the main body 411, the air inlet on the housing 100 is opposite to the opening of the heat dissipation channel 413, so that the air intake side of the fan 420 can directly draw air from the outside through the heat dissipation channel 413, forming a positive or negative pressure cooling cycle that draws in fresh cold air from the outside, makes the cold air flow through the high-efficiency heat dissipation surface, and then discharges it from the housing 100 by the fan 420.

[0085] By adopting the above technical solution, it is ensured that the air entering the heat dissipation channel 413 is always the air with a lower external temperature than that outside the casing 100, thereby improving the heat exchange temperature difference. Furthermore, due to the short and direct airflow path, air volume loss is reduced, thereby improving the utilization efficiency of the fan 420 and the overall heat dissipation effect, ensuring that the heat generated by the circuit board 200 can be continuously and quickly removed.

[0086] For example, the number of air inlets can be set to multiple. Multiple air inlets can increase the channels for air exchange between the inside and outside of the housing 100, provide a more sufficient source of cold air for heat dissipation, and enable zoned cooling according to the distribution of internal heat sources.

[0087] Multiple air inlets may include a first air inlet 101 and a second air inlet 102. The first air inlet 101 and the second air inlet 102 may be distinguished according to their functions or corresponding cooling areas, and the first air inlet 101 and the second air inlet 102 may have the same or different shapes and sizes.

[0088] The first air inlet 101 can be connected to the opening of the heat dissipation channel 413, allowing external air to enter the housing 100 through the first air inlet 101 and directly enter the interior of the heat dissipation channel 413 without undergoing complex detours. For example, the first air inlet 101 can be located on the side wall of the housing 100, and its position is directly opposite to the opening of the heat dissipation channel 413, or it can be connected through a simple airflow guiding structure to ensure that the air entering from the first air inlet 101 can be directly guided into one end of the heat dissipation channel 413.

[0089] The second air inlet 102 can face the heat sink 412. The second air inlet 102 can provide direct cooling airflow to the heat sink 412 itself, such as the surface of the heat sink 412. The second air inlet 102 can be opened at the bottom or side of the housing 100, so that after the outside air enters the housing 100, it can be blown directly into the gaps between the surfaces of the multiple heat sinks 412 to cool the surface of the heat sinks 412.

[0090] By setting the first air inlet 101 and the second air inlet 102, two parallel or coordinated air intake cooling paths are formed. One path can be configured such that external air enters directly into the interior of the heat dissipation channel 413 through the first air inlet 101, flows along the channel direction, and fully exchanges heat with the inner sidewall of the heat sink 412 and the surface of the main body 411. The other path can be configured such that external air enters the housing 100 through the second air inlet 102 and blows directly onto the outer side surface of the heat sink 412 to cool the extended portion of the heat sink 412.

[0091] Reference Figures 1-4 For example, the first air inlet 101 can be provided on the side wall of the housing 100 near the end of the heat dissipation channel 413, while the second air inlet 102 can be provided on the bottom surface or side wall of the housing 100 facing the heat dissipation plate 412 array.

[0092] Alternatively, the first air inlet 101 and the second air inlet 102 can be respectively located on different sides of the housing 100. For example, the first air inlet 101 is located at one end of the housing 100, and the second air inlet 102 is located on the side of the housing 100, working together with the heat dissipation assembly 400.

[0093] In some possible implementations, the housing 100 includes a first sidewall and a second sidewall connected to each other. The first sidewall and the second sidewall can be configured to form different wall surfaces constituting the peripheral structure of the side surface of the housing 100, and the first sidewall and the second sidewall can be connected to each other to jointly enclose an internal space of the housing 100 for accommodating internal components. A sidewall is a vertical or inclined wall portion on the housing 100 relative to the top and bottom surfaces.

[0094] For example, the first sidewall and the second sidewall can be arranged perpendicularly. The plane containing the first sidewall is perpendicular to the plane containing the second sidewall, and the angle between the plane containing the first sidewall and the plane containing the second sidewall is approximately ninety degrees.

[0095] The first air inlet 101 can be disposed on the first side wall. The first air inlet 101 needs to communicate with the opening of the heat dissipation channel 413. Therefore, the position of the first side wall should correspond to the side where the opening of the heat dissipation channel 413 is located along the first direction. By disposing the first air inlet 101 here, external air can be directly and horizontally entered into the heat dissipation channel 413 from one side of the housing 100.

[0096] The second air inlet 102 can be disposed on the second side wall. The second air inlet 102 needs to face the heat sink 412, and the heat sink 412 is usually disposed on the second surface of the main body 411 and extends along the first direction. Therefore, by opening the second air inlet 102 on the second side wall that is perpendicular to the first side wall, the direction of the incoming airflow can be made to be approximately perpendicular to the length direction of the heat sink 412, or to blow directly from the side into the gap between the surfaces of the heat sink 412.

[0097] By setting the first air inlet 101 and the second air inlet 102 on the first and second side walls that are perpendicular to each other, three-dimensional air intake in the orthogonal direction of space is achieved, so that the heat dissipation component 400 can obtain cold air from two different directions, thereby utilizing the ambient air around the housing 100 and providing a more sufficient and more diverse source of cooling airflow for the heat dissipation system of the dashcam.

[0098] In some possible implementations, the air intake side of the fan 420 abuts against the end of the heat sink 412 away from the main body 411, and the fan 420 can close at least part of the heat dissipation channel 413.

[0099] By adopting the above technical solution, it is possible to prevent the air that has been flowing through the heat dissipation channel 413 and has already carried a large amount of heat from bypassing at the channel outlet, that is, from being directly diffused back into the housing 100 without being drawn in by the fan 420, causing secondary heat accumulation.

[0100] The air intake side of the fan 420 abuts against the end of the heat sink 412 away from the main body 411, which enables the air that has undergone heat exchange to be effectively captured by the fan 420 and directionally discharged from the housing 100, thereby improving the utilization rate of cooling airflow, enhancing the overall efficiency of the heat dissipation system, and ensuring that the heat generated by the circuit board 200 is continuously and efficiently discharged.

[0101] Reference Figures 1-4In some possible implementations, the heat sink 412 can be integrally formed with the main body 411. This integral formation can be configured such that the heat sink 412 and the main body 411 of the heat sink 410 are integrally formed using the same manufacturing process, rather than being combined by subsequent welding, bonding, or mechanical connection.

[0102] For example, a heat sink 410, which combines a main body 411 and multiple heat sinks 412, can be directly manufactured using metal die casting or aluminum extrusion molding processes. This eliminates the contact thermal resistance at the connection between the base of the heat sink 412 and the main body 411, ensuring that there is no interface loss during heat transfer from the main body 411 to the heat sink 412, thus achieving efficient heat transfer. Furthermore, the integrated structure significantly improves the overall structural strength of the heat sink 410, reducing the risk of the heat sink 412 loosening or falling off due to vehicle vibration.

[0103] And / or, the heat sink 410 can be configured as a metal heat sink 410. A metal heat sink 410 means that the entire heat sink 410 is made of a metal material with excellent thermal conductivity, such as aluminum alloy, copper, or alloys thereof. Metal materials have high thermal conductivity, which can quickly conduct the heat generated by the circuit board 200 from the main body 411 to the various heat sinks 412, which is the basis for achieving efficient heat dissipation.

[0104] For example, an aluminum alloy heat sink 410 can be manufactured using an extrusion process, which ensures thermal conductivity while also achieving lightweight and cost control. Alternatively, for scenarios with higher heat dissipation requirements, a copper heat sink 410 or a copper-aluminum composite structure can be used.

[0105] By integrating the heat sink 412 with the main body 411 and using a metal material, the interfacial thermal resistance in the heat conduction path is eliminated, ensuring efficient heat transfer from the circuit board 200 to the end of the heat sink 412. Simultaneously, by coaxially aligning the circular exhaust port of the fan 420 with the circular heat dissipation port 103 on the housing 100, a low-resistance exhaust channel is constructed.

[0106] In some possible implementations, the fan 420 may be provided with a circular air outlet. A circular air outlet means that the outlet of the fan 420 for exhausting air is designed with a circular cross-section. This shape is regular and symmetrical, which facilitates precise matching with the corresponding structure on the housing 100.

[0107] For example, the heat dissipation vent 103 can be configured as a circular heat dissipation vent 103. A circular heat dissipation vent 103 means that the opening on the housing 100 for dissipating hot air is also designed to be circular. The circular heat dissipation vent 103 is coaxially arranged with the circular air outlet. The hot air discharged by the fan 420 can be ejected from the housing 100 through the most direct and smoothest path, avoiding airflow obstruction or turbulence caused by misalignment of the outlet, thereby minimizing exhaust resistance and improving exhaust efficiency.

[0108] Multiple support members 104 are provided inside the circular heat dissipation vent 103. The support members 104 are small structures provided inside the heat dissipation vent 103, such as thin ribs or grids that span the heat dissipation vent 103. The support members 104 are connected to the inner wall of the circular heat dissipation vent 103, that is, the two ends or the periphery of the support members 104 are fixed to the wall surface of the housing 100 that constitutes the heat dissipation vent 103.

[0109] Multiple support members 104 can separate the circular heat dissipation vent 103. This means that the support members 104 form a mesh or radial partition inside the heat dissipation vent 103, dividing the originally single large circular opening into multiple smaller sub-openings. The function of this structure is mainly reflected in two aspects: First, it acts as a structural reinforcing rib, increasing the strength and rigidity of the edge of the heat dissipation vent 103 and preventing the housing 100 from becoming fragile and easily cracked due to the opening. Second, it provides physical protection, preventing external foreign objects (such as fingers, insects, or larger particles) from directly entering the interior of the housing 100 through the heat dissipation vent 103 and contacting sensitive components such as the fan 420 or circuit board 200, thereby improving safety without significantly obstructing airflow.

[0110] For example, the multiple supports 104 can be arranged in a cross shape to divide the circular heat dissipation vent 103 into four fan-shaped areas. Alternatively, the supports 104 can be designed to radiate outwards from the center to divide the heat dissipation vent 103 into multiple fan-shaped areas.

[0111] Multiple support members 104 are installed inside the heat dissipation vent 103, which not only strengthens the structure of the housing 100 at the opening, but also effectively prevents foreign objects from entering. Through this series of structural optimizations, the efficiency and reliability of the entire heat dissipation chain, from heat conduction and convection to exhaust, have been systematically improved, thus providing a more solid guarantee for the long-term stable operation of the dashcam.

[0112] In summary, the dashcam includes a housing 100, a circuit board 200, and a heat dissipation assembly 400. The housing 100 has a heat dissipation vent 103, and the circuit board 200 is disposed inside the housing 100. The heat dissipation assembly 400 includes a heat sink 410 and a fan 420. The first surface of the heat sink 410 faces the circuit board 200, and the second surface of the heat sink 410 is provided with a heat dissipation channel 413. The air intake side of the fan 420 is connected to the heat dissipation channel 413, and the second end of the fan 420 can be connected to the outside of the housing 100 through the heat dissipation vent 103.

[0113] The first surface of the heat sink 410 faces the circuit board 200, allowing heat generated by the circuit board 200 to be transferred to the heat sink 410. Furthermore, the air intake side of the fan 420 is connected to the heat dissipation channel 413, allowing air drawn in from the intake side to flow directly or indirectly into the heat dissipation channel 413. When the fan 420 operates, it generates a negative pressure within the heat dissipation channel 413, driving cooler external air to flow through the channel and thus carrying away heat from the heat sink 410.

[0114] The exhaust side of the fan 420 can be connected to the outside of the housing 100 through the heat dissipation port 103. The hot air that has passed through the heat dissipation channel 413 and carried away the heat will be drawn in or blown out by the fan 420 and finally discharged from the exhaust side of the fan 420. The discharged hot air can flow smoothly to the outside of the housing 100 through the heat dissipation port 103 on the housing 100 to complete the entire heat dissipation cycle, so as to ensure that the hot air is efficiently discharged from the housing 100 and avoids being stagnant inside the housing 100.

[0115] The heat generated by the circuit board 200 is absorbed by the heat sink 410, and the air is driven by the fan 420 to flow through the heat dissipation channel 413 set on the heat sink 410. Finally, the hot air is discharged outside the housing 100 through the heat dissipation port 103 on the housing 100, forming a forced convection heat dissipation cycle. This can efficiently and quickly reduce the temperature inside the housing 100, reduce the heat accumulation of the circuit board 200 inside the housing 100 due to long-term operation, and thus ensure that the dashcam can operate stably and reliably for a long time.

[0116] This application provides a vehicle that includes a dashcam according to any of the above embodiments.

[0117] Since the vehicle provided in this application embodiment includes a dashcam according to any of the above embodiments, the vehicle in this application embodiment has the advantages of a dashcam according to any of the above embodiments, which can be referred to above for details, and will not be repeated here.

[0118] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0119] In the description of this utility model, it should be understood that the terms "comprising" and "having" as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0120] Unless otherwise expressly 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 direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection 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. Furthermore, the terms "first," "second," etc., 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.

[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A dashcam, characterized in that, Includes housing, circuit board, and heat dissipation components; The housing has heat dissipation vents, and the circuit board is disposed inside the housing; The heat dissipation assembly includes a heat sink and a fan. The first surface of the heat sink faces the circuit board, and the second surface of the heat sink is provided with a heat dissipation channel. The air inlet side of the fan is connected to the heat dissipation channel, and the air outlet side of the fan can be connected to the outside of the housing through the heat dissipation port; The heat sink includes a main body and multiple heat sinks, and the first surface of the main body is attached to the circuit board. Multiple heat sinks are disposed on the second surface of the main body, and the multiple heat sinks are arranged sequentially at intervals, with heat dissipation channels formed between adjacent heat sinks; The heat sink extends along a first direction; The heat dissipation channel formed by two adjacent heat dissipation plates extends along the first direction, and the heat dissipation channel has openings at both ends along the first direction.

2. The dashcam according to claim 1, characterized in that, The fan is positioned opposite to the main body; The housing is provided with an air inlet, and at least part of the air inlet is arranged opposite to the opening of the heat dissipation channel, so that the air intake side of the fan can draw air in from the air inlet through the heat dissipation channel.

3. The dashcam according to claim 2, characterized in that, The number of air inlets is multiple, and the multiple air inlets include a first air inlet and a second air inlet; The first air inlet is connected to the opening of the heat dissipation channel, and the second air inlet faces the heat dissipation plate.

4. The dashcam according to claim 3, characterized in that, The housing includes a first sidewall and a second sidewall connected to each other; The first sidewall is perpendicular to the second sidewall, the first air inlet is located on the first sidewall, and the second air inlet is located on the second sidewall.

5. The dashcam according to claim 2, characterized in that, The air intake side of the fan abuts against the end of the heat sink away from the main body, and the fan can close at least part of the heat dissipation channel.

6. The dashcam according to claim 1, characterized in that, The heat sink is integrally formed with the main body; and / or the heat sink is a metal heat sink.

7. The dashcam according to any one of claims 1-6, characterized in that, The housing includes an upper cover and a lower cover, which are detachably connected; The circuit board is disposed on the lower cover, and the heat dissipation vent is disposed on the upper cover; The fan is provided with a circular air outlet, and the heat dissipation port is provided with a circular heat dissipation port. The circular heat dissipation port and the circular air outlet are coaxially arranged. The circular heat dissipation vent is provided with multiple support members, which are connected to the inner wall of the circular heat dissipation vent, and the multiple support members can separate the circular heat dissipation vent.

8. A vehicle, characterized in that, Including the dashcam as described in any one of claims 1-7.

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