Automobile data recorder

Abstract

The utility model provides an automobile data recorder. The automobile data recorder comprises a first shell, a first circuit board, a second circuit board, a first heat-conducting fin and a second heat-conducting fin. A containing cavity is formed in the first shell, the first circuit board is provided with a main control chip, the second circuit board is provided with a camera chip, the first circuit board, the second circuit board, the first heat-conducting fin and the second heat-conducting fin are arranged in a stacked mode in the first direction and located in the containing cavity, and the first heat-conducting fin is located between the first circuit board and the second circuit board. The second heat-conducting fin is located on one side of the first circuit board away from the first heat-conducting fin. The automobile data recorder provided by the utility model has relatively good heat dissipation performance and is relatively high in working efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of image recording equipment, and in particular to a driving recorder. Background Art

[0002] In related technologies, a driving recorder is used to record and store images of a vehicle while it is driving. Continuous operation of the driving recorder can easily cause the instrument to overheat, thereby reducing its reliability during operation and affecting the reliability and life of the instrument. Utility Model Content

[0003] In view of this, the embodiments of the present application hope to provide a driving recorder with good heat dissipation performance and high reliability during operation.

[0004] The embodiment of the present application provides a driving recorder, comprising:

[0005] A first shell having an accommodating cavity therein;

[0006] a first circuit board, wherein the first circuit board is provided with a main control chip;

[0007] a second circuit board, wherein the second circuit board is provided with a camera chip;

[0008] A first heat conducting sheet and a second heat conducting sheet, the first circuit board, the second circuit board, the first heat conducting sheet and the second heat conducting sheet are stacked along a first direction and are all located in the accommodating cavity, the first heat conducting sheet is located between the first circuit board and the second circuit board, and the second heat conducting sheet is located on a side of the first circuit board away from the first heat conducting sheet.

[0009] In some embodiments, the first heat conducting sheet includes a main board portion and an extension portion, the main board portion and the first circuit board are stacked along the first direction, and the extension portion is connected to a peripheral side of the main board portion and bent toward the first direction.

[0010] In some embodiments, the driving recorder further includes a heat-conducting medium layer, and the heat-conducting medium layer is filled between the extension portion and the inner surface of the first shell.

[0011] In some embodiments, the first heat conducting plate includes a copper plate; and / or the second heat conducting plate includes an aluminum plate.

[0012] In some embodiments, the second heat conducting sheet includes a plate body and a plurality of heat dissipating fins, wherein the plurality of heat dissipating fins protrude from a surface of the plate body on a side away from the first circuit board.

[0013] In some embodiments, the driving recorder further includes a battery and a partition, wherein the battery and the partition are stacked on a side of the second heat conducting plate away from the first circuit board, and the partition is disposed adjacent to the second heat conducting plate.

[0014] In some embodiments, ventilation holes are respectively provided on the shell walls of the first shell on two opposite sides in a second direction, where the second direction is perpendicular to the first direction, and the ventilation holes connect the accommodating cavity and the external environment.

[0015] In some embodiments, the driving recorder includes a lens module, and the lens module is disposed on a side of the second circuit board away from the first heat conducting plate;

[0016] In the plane projection perpendicular to the second direction, the projection of at least part of the ventilation hole overlaps with the projection of the lens module.

[0017] In some embodiments, the driving recorder further includes a base and a connecting structure, wherein the connecting structure is used to connect to the vehicle; the base is provided on the shell wall of the first shell, and the connecting structure is rotatably connected to the base.

[0018] The base is rotatably connected to the first shell, and an axis of relative rotation between the first shell and the base, an axis of relative rotation between the base and the connecting structure, and the first direction are perpendicular to each other.

[0019] In some embodiments, the first shell includes a main shell and an end cover, the main shell has an opening formed on one side along the second direction, the end cover is installed on the main shell and closes the opening, the base is arranged on the end cover, and the second direction is perpendicular to the first direction.

[0020] The driving recorder in the embodiment of the present application is cooled and dissipated by the first heat conducting plate and the second heat conducting plate, which has a good effect. It can suppress the temperature rise of the first circuit board and the second circuit board, reduce the probability of "temperature drift" or melting, etc. that may cause the driving recorder to malfunction, improve the reliability of the driving recorder during operation, and facilitate the driving recorder to work for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of a driving recorder in one embodiment of the present application;

[0022] Figure 2 for Figure 1 Schematic diagram of the structure in another perspective;

[0023] Figure 3 for Figure 1 Exploded view of the structure;

[0024] Figure 4 for Figure 3 Schematic diagram of the structure in another perspective;

[0025] Figure 5 for Figure 4 A magnified schematic diagram of the P portion of the middle structure;

[0026] Figure 6 for Figure 4 A magnified schematic diagram of the Q portion of the middle structure;

[0027] Figure 7 A schematic diagram of the structure of the driving recorder in one embodiment of the present application after omitting the main housing.

[0028] Description of Reference Numerals

[0029] 100. Driving recorder; 10. First shell; 10A. Accommodating cavity; 10a. Ventilation hole; 11. Main shell; 12. End cover; 21. First circuit board; 22. Second circuit board; 211. Main control chip; 221. Camera chip; 31. First heat conducting plate; 311. Main board; 312. Extension; 3121. First extension plate; 3122. Second extension plate; 32. Second heat conducting plate; 321. Board body; 322. Heat dissipating fin; 40. Thermal conductive medium layer; 50. Battery; 60. Partition; 70. Base; 80. Connection structure; 91. Speaker unit; 92. Lens module. DETAILED DESCRIPTION

[0030] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0032] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0033] The embodiment of the present application provides a driving recorder 100. The driving recorder 100 is an electronic device that records and stores images of a vehicle during driving. Figure 1 and Figure 7 The driving recorder 100 includes a first housing 10 , a first circuit board 21 , a second circuit board 22 , a first heat conducting plate 31 , and a second heat conducting plate 32 .

[0034] like Figure 3 The housing has an interior containing a cavity 10A. The first circuit board 21, the second circuit board 22, the first heat conducting sheet 31, and the second heat conducting sheet 32 ​​are stacked along a first direction D1 and are all located within the cavity 10A. The shape of the first housing 10 is not limited. For example, in one embodiment, the first housing 10 is a rectangular parallelepiped.

[0035] See also Figure 3 and Figure 4 , the first circuit board 21 is provided with a main control chip 211, and the second circuit board 22 is provided with a camera chip 221. The above-mentioned circuit boards include PCBs (Printed Circuit Boards), which are carriers for electrically connecting electronic components to each other. For example, the main control chip 211 is provided on the first circuit board 21 to establish connections with other electronic components. Exemplarily, the camera chip 221 is used to convert optical signals into electrical signals for digital processing, and the main control chip 211 is used to control the entire driving recorder 100, including collecting image data sent by the camera chip 221, and compressing and storing image data, etc. It is a very important electronic component on the driving recorder 100.

[0036] Since the main control chip 211 and the camera chip 221 have a large amount of data processing during operation and are prone to generate heat, the temperatures of the first circuit board 21 and the second circuit board 22 tend to increase.

[0037] The dash cam in the related art mainly dissipates heat through a heat sink attached to the motherboard, which is inefficient. If the dash cam is exposed to sunlight, the temperature will rise rapidly due to the heat generated inside it, which is not conducive to the long-term operation of the dash cam and affects its reliability.

[0038] See also Figure 3 and Figure 7 The first heat conducting sheet 31 is located between the first circuit board 21 and the second circuit board 22. The heat conducting sheet is a sheet-like structure with a heat conducting function. The first heat conducting sheet 31 can absorb heat not only from the vicinity of the first circuit board 21 but also from the vicinity of the second circuit board 22 through heat conduction and / or heat radiation, and transfer the heat away, for example, by dissipating the heat into the air within the accommodating cavity 10A. This reduces heat accumulation in the first circuit board 21 and the second circuit board 22, suppresses their temperature rise, and facilitates the normal operation of the electronic components. In other words, the first heat conducting sheet 31 plays a role in cooling and heat dissipation.

[0039] The second heat conducting plate 32 is located on a side of the first circuit board 21 away from the first heat conducting plate 31, and can directly absorb heat from the other side of the first circuit board 21. That is, the first circuit board 21 is located between the first heat conducting plate 31 and the second heat conducting plate 32, and its heat can be dispersed and transferred between the first heat conducting plate 31 and the second heat conducting plate 32, thereby further suppressing the temperature increase of the first circuit board 21 and playing a role in cooling and heat dissipation.

[0040] The driving recorder 100 in the embodiment of the present application is cooled and dissipated by the first heat conducting plate 31 and the second heat conducting plate 32, which has a good effect. It can suppress the temperature rise of the first circuit board 21 and the second circuit board 22, reduce the probability of "temperature drift" or melting, etc., which may cause the driving recorder 100 to malfunction, improve the reliability of the driving recorder 100 during operation, and facilitate the driving recorder 100 to work for a long time.

[0041] For example, in one embodiment, please refer to Figure 4 The driving recorder 100 also includes a heat-conducting medium layer 40. The heat-conducting medium layer 40 is filled between the first circuit board 21 and the first heat-conducting plate 31, between the first circuit board 21 and the second heat-conducting plate 32, and between the second circuit board 22 and the first heat-conducting plate 31, ensuring stable heat transfer between the two. The heat-conducting medium layer 40 can be thermal grease or thermal silica gel.

[0042] The material of the first heat conducting plate 31 is not limited. In some embodiments, the first heat conducting plate 31 includes a copper plate. The copper plate has good thermal conductivity and can transfer heat from the first circuit board 21 and the second circuit board 22 in a timely manner.

[0043] The material of the second heat conducting plate 32 is not limited. In some embodiments, the second heat conducting plate 32 includes an aluminum plate. The aluminum plate has good thermal conductivity and low cost. The side of the first circuit board 21 away from the first heat conducting plate 31 can transfer heat in time and is conducive to cost control.

[0044] For some examples, see Figure 4 and Figure 7 The first heat conducting sheet 31 includes a main plate portion 311 and an extension portion 312. The main plate portion 311 and the first circuit board 21 are stacked along the first direction D1. The extension portion 312 is connected to the periphery of the main plate portion 311 and bends in the first direction D1. The extension portion 312 expands the surface area of ​​the first heat conducting sheet 31, dispersing heat from the first heat conducting sheet 31 and facilitating heat dissipation into the surrounding air. The extension portion 312 occupies less space perpendicular to the first direction D1, resulting in a compact structure between the first circuit board 21 and the second circuit board 22. This reduces wiring length and improves space utilization within the first housing 10.

[0045] It should be noted that the number of extensions 312 can be at least two, including two, three, or more. The shape and size of each extension 312 can be the same or different. The peripheral edge of the main plate portion 311 can be connected to the extension 312 on some side edges, or on all side edges.

[0046] For example, see Figure 4 and Figure 6 The at least two extension parts 312 include a first extension piece 3121 and a second extension piece 3122. The first extension piece 3121 and the second extension piece 3122 are respectively arranged on two adjacent sides of the main plate part 311. Figure 7 The driving recorder 100 includes a speaker unit 91. The first extension piece 3121 is located on a side of the main board portion 311 close to the speaker unit 91. The first extension piece 3121 is long and strip-shaped along the first direction D1 to avoid the speaker unit 91 on the circumferential side of the main board portion 311. In this way, while meeting the internal layout requirements of the driving recorder 100, the first heat conductive sheet 31 has a larger surface area.

[0047] For some examples, see Figure 3 and Figure 6 A heat-conducting medium layer 40 is filled between the extension portion 312 and the inner surface of the first shell 10. The heat on the extension portion 312 can be transferred to the first shell 10 through the heat-conducting medium layer 40, and the heat is transported to the external environment through the first shell 10, making it difficult for heat to accumulate on the first heat-conducting plate 31, which is conducive to promoting the first heat-conducting plate 31 to absorb the heat of the first circuit board 21 and the second circuit board 22, thereby enhancing the cooling and heat dissipation effect of the first heat-conducting plate 31.

[0048] Exemplarily, a heat-conducting medium layer 40 is filled between the second extending piece 3122 and the inner surface of the first shell 10 .

[0049] For example, the first shell 10 includes a plastic shell. The plastic shell has a large specific heat, which can reduce the risk of burning the user due to the temperature increase during the heat dissipation process of the first shell 10.

[0050] For some examples, see Figure 5 The second heat conducting plate 32 includes a plate body 321 and a plurality of heat dissipation fins 322. The plurality of heat dissipation fins 322 protrude from the surface of the plate body 321 on a side away from the first circuit board 21. The plurality of heat dissipation fins 322 expand the surface area of ​​the second heat conducting plate 32, facilitate heat exchange between the second heat conducting plate 32 and the surrounding air, and enhance the cooling and heat dissipation effect of the second heat conducting plate 32.

[0051] For some examples, see Figure 3 and Figure 7 The driving recorder 100 further includes a battery 50 and a partition 60. The battery 50 and the partition 60 are stacked on a side of the second heat conducting sheet 32 ​​away from the first circuit board 21, with the partition 60 positioned adjacent to the second heat conducting sheet 32. That is, the battery 50, the partition 60, the second heat conducting sheet 32, and the first circuit board 21 are sequentially arranged from the outside to the inside of the first housing 10. For example, the battery 50 is fixed to the partition 60.

[0052] The second heat conducting sheet 32 ​​not only suppresses the temperature rise of the first heat conducting sheet 31 but also separates the battery 50 from the first circuit board 21, reducing the transfer of heat from the first circuit board 21 to the battery 50. This helps the battery 50 operate within a stable temperature range and improves the stability of the driving recorder 100. The heat dissipation fins 322 increase the distance between the battery 50 and the first circuit board 21 along the first direction D1, further reducing the transfer of heat from the first circuit board 21 to the battery 50.

[0053] For some examples, see Figure 2 and Figure 4 The first shell 10 is provided with ventilation holes 10a on the shell walls on two opposite sides in the second direction D2. The second direction D2 is perpendicular to the first direction D1. The ventilation holes 10a connect the accommodating cavity 10A with the external environment.

[0054] The ventilation holes 10a allow air to pass through. On the one hand, the air in the accommodating cavity 10A absorbs heat and its temperature rises and expands, which produces a tendency to flow toward the external environment, bringing the heat out to the external environment, so that the temperature of the air in the accommodating cavity 10A is not too high, and the heat of the first heat conducting plate 31 and the second heat conducting plate 32 can be transferred to the air in the accommodating cavity 10A more quickly; on the other hand, for example, after the driving recorder 100 is installed in place, the second direction D2 is along the direction of gravity, and the ventilation holes 10a respectively arranged on the opposite sides of the first shell 10 in the second direction D2 are conducive to the discharge of hotter air from the upper ventilation holes 10a and the entry of cooler air from the lower ventilation holes 10a, thereby forming convection, accelerating the gas exchange rate of the first shell 10, and ultimately further enhancing the cooling and heat dissipation effect of the first heat conducting plate 31 and the second heat conducting plate 32.

[0055] In addition, the first direction D1 is perpendicular to the second direction D2, which is beneficial for air to flow between the ventilation holes 10a on both sides, passing through most of the surfaces of the first circuit board 21, the second circuit board 22, the first heat conducting plate 31 and the second heat conducting plate 32, thereby promoting heat transfer to the air and eventually being discharged out of the accommodating cavity 10A.

[0056] Exemplarily, the heat dissipating fins 322 on the second heat conducting sheet 32 ​​are arranged along the third direction, and the third direction, the second direction D2 , and the first direction D1 are perpendicular to each other, so that air can flow through most surfaces of the heat dissipating fins 322 .

[0057] For some examples, see Figure 4 and Figure 7 The driving recorder 100 includes a lens module 92, which is disposed on a side of the second circuit board 22 away from the first heat conducting sheet 31. For example, the lens module 92 is disposed along the first direction D1 toward the outside of the first housing 10 to facilitate light entering the aperture of the lens module 92.

[0058] In an orthographic projection taken on a plane perpendicular to the second direction D2, at least a portion of the projection of the ventilation holes 10a overlaps with a projection of the lens module 92. In other words, at least a portion of the air flowing through the ventilation holes 10a passes through the lens module 92. It will be appreciated that the lens module 92 does not completely cover the surface of the second circuit board 22 along the first direction D1. A relatively large space exists around the lens module 92, allowing air to flow smoothly and promoting heat dissipation.

[0059] For some examples, see Figure 1 and Figure 2The driving recorder 100 also includes a base 70 and a connecting structure 80. The base 70 is arranged on the shell wall of the first shell 10 on one side along the second direction D2, and the connecting structure 80 is rotatably connected to the base 70; the connecting structure 80 is used to connect to the vehicle, for example, to the front windshield of the vehicle.

[0060] Exemplarily, the surface of the connecting structure 80 connected to the vehicle is coated with adhesive to adhere the driving recorder 100 to the vehicle and fix it.

[0061] The axis of relative rotation between the connecting structure 80 and the base 70 (first axis A1, one of the center lines shown) intersects the first direction D1. This means that the first housing 10 can rotate relative to the connecting structure 80 to adjust the orientation of the lens module 92. For example, the first axis A1 is along the horizontal direction of the vehicle, and rotation of the first housing 10 about the first axis A1 can adjust the pitch angle of the lens module 92.

[0062] For some examples, see Figure 2 and Figure 3 The base 70 is rotatably connected to the first housing 10. The axis of relative rotation between the first housing 10 and the base 70 (second axis A2, one of the center lines shown), the extension direction of the first axis A1, and the first direction D1 are perpendicular to each other. This allows the first housing 10 to rotate in another direction, providing greater flexibility in adjusting the orientation of the lens module 92.

[0063] For example, the second axis A2 is along the vertical direction of the vehicle, and the rotation of the first shell 10 around the second axis A2 can adjust the deflection angle of the lens module 92 along the horizontal direction.

[0064] It can be understood that the orientation of the lens module 92 is not adjusted by adjusting the lens module 92 alone, but by rotating the first shell 10 to drive the lens module 92 fixed therein to adjust the orientation. In this way, there is no need to set up an adjustment mechanism for the orientation of the lens module 92. The structure inside the first shell 10 is relatively simple, and heat dissipation is also convenient, which is beneficial to improving the reliability of the driving recorder 100 during operation.

[0065] The first shell 10 is rotatable relative to the connecting structure 80, which not only adjusts the orientation of the lens module 92, but also prevents the outer surfaces of various parts of the first shell 10 from directly contacting the vehicle structure (such as the front windshield), which is beneficial to the arrangement of the ventilation holes 10a and the discharge of hot air.

[0066] For some examples, see Figure 1 and Figure 3The first housing 10 includes a main housing 11 and an end cover 12. The main housing 11 has an opening formed on one side along the second direction D2. The end cover 12 is mounted on the main housing 11 and closes the opening. The base 70 is disposed on the end cover 12. The main housing 11 and the end cover 12 are separate components for easy assembly.

[0067] Illustratively, the first circuit board 21 , the second circuit board 22 , the first heat conducting plate 31 , the second heat conducting plate 32 and the battery 50 are assembled into one body and installed in the main housing 11 , and then the end cover 12 is installed on the main housing 11 .

[0068] Exemplarily, a ventilation hole 10 a is provided on the end cover 12 .

[0069] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0070] In the description of this specification, reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0071] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction.

[0072] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A driving recorder, characterized in that: include: A first shell having an accommodating cavity therein; a first circuit board, wherein the first circuit board is provided with a main control chip; a second circuit board, wherein the second circuit board is provided with a camera chip; A first heat conducting sheet and a second heat conducting sheet, the first circuit board, the second circuit board, the first heat conducting sheet and the second heat conducting sheet are stacked along a first direction and are all located in the accommodating cavity, the first heat conducting sheet is located between the first circuit board and the second circuit board, and the second heat conducting sheet is located on a side of the first circuit board away from the first heat conducting sheet.

2. The driving recorder according to claim 1, characterized in that: The first heat conducting sheet includes a main plate portion and an extension portion. The main plate portion and the first circuit board are stacked along the first direction. The extension portion is connected to a peripheral side of the main plate portion and bent toward the first direction.

3. The driving recorder according to claim 2, characterized in that: The driving recorder further includes a heat-conducting medium layer, and the heat-conducting medium layer is filled between the extension portion and the inner surface of the first shell.

4. The driving recorder according to claim 1, characterized in that: The first heat conducting plate includes a copper plate; and / or the second heat conducting plate includes an aluminum plate.

5. The driving recorder according to claim 1, characterized in that: The second heat conducting sheet includes a plate body and a plurality of heat dissipating fins, wherein the plurality of heat dissipating fins protrude from a surface of the plate body on a side away from the first circuit board.

6. The driving recorder according to claim 1, characterized in that: The driving recorder further includes a battery and a partition. The battery and the partition are both stacked on a side of the second heat conducting plate away from the first circuit board. The partition is adjacent to the second heat conducting plate.

7. The driving recorder according to any one of claims 1 to 6, characterized in that: The shell walls of the first shell on two opposite sides in a second direction are respectively provided with ventilation holes, the second direction being perpendicular to the first direction, and the ventilation holes are connected between the accommodating cavity and the external environment.

8. The driving recorder according to claim 7, characterized in that: The driving recorder includes a lens module, and the lens module is arranged on a side of the second circuit board away from the first heat conducting plate; In the plane projection perpendicular to the second direction, the projection of at least part of the ventilation hole overlaps with the projection of the lens module.

9. The driving recorder according to any one of claims 1 to 6, characterized in that: The driving recorder also includes a base and a connecting structure, the connecting structure is used to connect to the vehicle; the base is arranged on the shell wall of the first shell, the connecting structure is rotatably connected to the base, the base is rotatably connected to the first shell, and the axis of relative rotation between the first shell and the base, the axis of relative rotation between the base and the connecting structure, and the first direction are perpendicular to each other.

10. The driving recorder according to claim 9, characterized in that: The first shell includes a main shell and an end cover. The main shell is formed with an opening on one side along the second direction. The end cover is installed on the main shell and closes the opening. The base is arranged on the end cover. The second direction is perpendicular to the first direction.

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