Vehicle-mounted electronic device and vehicle

Abstract

The utility model relates to a vehicle-mounted electronic device and a vehicle, and the vehicle-mounted electronic device comprises a housing which is provided with a heat dissipation surface; the axial flow fan is arranged above the heat dissipation surface and blows air towards the heat dissipation surface; the shielding device is arranged on the side, close to the heat dissipation face, of the axial flow fan and completely covers a non-air-blowing area in the center of the axial flow fan. The heat dissipation surface of the shell is subjected to air blowing heat dissipation through the axial flow fan, the shielding device shields the non-air-blowing area in the center of the axial flow fan, air circulates towards the outer side along the outer wall of the shielding device, generation of vortexes in the non-air-blowing area in the middle of the axial flow fan is reduced, and therefore the energy loss of the axial flow fan is reduced, and the heat dissipation effect is enhanced; and meanwhile, noise generated by turbulence of the air flow is also reduced due to reduction of the vortex.

Description

In-vehicle electronic devices and vehicles Technical Field

[0001] This disclosure relates to the field of vehicle-mounted equipment technology, specifically to a vehicle-mounted electronic device and a vehicle. Background Technology

[0002] The chips required for automotive intelligent driving domain control platforms have extremely stringent heat dissipation requirements. To ensure the normal operation of electronic components and protect their lifespan, external fans are generally used to blow air onto the housing and critical chips. Axial fans are one of the commonly used heat dissipation devices. When an axial fan blows air vertically towards the heat dissipation surface at a close distance, a non-blowing area will form in the middle of the fan due to obstruction from components such as the fan motor. In this area, the airflow interacts with the surrounding air, easily forming eddies. The presence of eddies leads to turbulent dissipation, resulting in energy loss and reducing the energy utilization efficiency of the axial fan. Summary of the Invention

[0003] The purpose of this disclosure is to provide an in-vehicle electronic device and vehicle that can solve the aforementioned technical problems.

[0004] To achieve the above objectives, this disclosure provides an in-vehicle electronic device, comprising: a housing having a heat dissipation surface; an axial fan disposed above the heat dissipation surface and blowing air toward the heat dissipation surface; and a shielding device disposed on the side of the axial fan near the heat dissipation surface and completely covering the non-blowing area at the center of the axial fan.

[0005] Optionally, the outer wall of the shielding device is inclined outward from the axial fan to the heat dissipation surface.

[0006] Optionally, the cross-sectional structure of the shielding device is a circle corresponding to the non-blowing area at the center of the axial fan.

[0007] Optionally, the portion of the heat dissipation surface opposite to the axial fan has a slope that gradually decreases outward from the lower end of the shielding device.

[0008] Optionally, the heat dissipation surface is provided with heat dissipation fins, the heat dissipation surface has a mounting position, the axial fan is mounted at the mounting position by a fixing device, and the heat dissipation fins are disposed outside the mounting position.

[0009] Optionally, the heat dissipation fins are spaced apart to form a heat dissipation channel, and each end of the heat dissipation fin facing the mounting position has an air outlet slope on both opposite sides, and the air outlet slope gradually slopes inward from the side away from the mounting position to the side closer to the mounting position.

[0010] Optionally, the fixing device includes a cover plate, a support leg, and a connector. The cover plate covers the outside of the mounting position, the support leg is disposed on the mounting position and extends toward the cover plate, the cover plate is provided with a first connecting hole, the axial fan is provided with a second connecting hole, the support leg is provided with a third connecting hole, and one end of the connector passes through the first connecting hole and the second connecting hole in sequence and is connected to the third connecting hole.

[0011] Optionally, the side of the shielding device that contacts the axial fan is flush with the end face of the support leg.

[0012] Optionally, the cover plate is provided with ventilation openings, and both ends of the cover plate extend beyond the mounting position in the direction of the extension of the heat dissipation fins.

[0013] Another object of this disclosure is to provide a vehicle including the aforementioned in-vehicle electronic device.

[0014] Through the above technical solution, the axial fan blows air to dissipate heat on the heat dissipation surface of the casing, and the shielding device blocks the non-blowing area in the center of the axial fan, so that the air flows outward along the outer wall of the shielding device, reducing the generation of vortices in the non-blowing area in the center of the axial fan, thereby reducing the energy loss of the axial fan and enhancing the heat dissipation effect; at the same time, the reduction of vortices also reduces the noise caused by airflow turbulence.

[0015] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 is an exploded view of the vehicle-mounted electronic device in this disclosure;

[0018] Figure 2 is a top view of the shell in this disclosure;

[0019] Figure 3 is an external structural diagram of the vehicle-mounted electronic device in this disclosure;

[0020] Figure 4 is a top view of the vehicle-mounted electronic device in this disclosure;

[0021] Figure 5 is a cross-sectional view of Figure 4 (AA section).

[0022] Explanation of reference numerals in the attached figures

[0023] 1. Housing; 11. Heat dissipation surface; 12. Sloping surface; 2. Heat dissipation fins; 21. Air outlet slope; 3. Axial fan; 31. Second connection hole; 32. Non-blowing area; 4. Fixing device; 41. Connector; 42. Cover plate; 421. Vent; 422. First connection hole; 43. Support leg; 431. Third connection hole; 5. Mounting position; 6. Shielding device. Detailed Implementation

[0024] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0025] In this disclosure, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" generally refer to the upper, lower, top, and bottom of the corresponding component in its operational state in the direction of gravity, while "inner" and "outer" refer to the inner and outer contours relative to the component or structure itself. Furthermore, it should be noted that terms such as "first," "second," and "third" are used to distinguish one element from another and do not indicate sequence or importance. Additionally, in the description with reference to the accompanying drawings, the same reference numerals in different drawings denote the same element.

[0026] As shown in Figures 1-5, this disclosure provides an in-vehicle electronic device, including: a housing 1 having a heat dissipation surface 11; an axial fan 3 disposed above the heat dissipation surface 11 and blowing air toward the heat dissipation surface 11; and a shielding device 6 disposed on the side of the axial fan 3 near the heat dissipation surface 11 and completely covering the non-blowing area 32 at the center of the axial fan 3.

[0027] Through the above technical solution, the axial fan 3 blows air to dissipate heat on the heat dissipation surface 11 of the housing 1. The shielding device 6 blocks the non-blowing area 32 in the center of the axial fan 3, allowing the air to flow outward along the outer wall of the shielding device 6. This reduces the generation of vortices in the non-blowing area 32 in the center of the axial fan 3, thereby reducing the energy loss of the axial fan 3 and enhancing the heat dissipation effect. At the same time, the reduction of vortices also reduces the noise caused by airflow turbulence. The shielding device 6 can be integrally set with the housing 1 or can be detached, for example, by means of clips or bolts, which facilitates the replacement of the shielding device 6.

[0028] As an optional implementation, as shown in Figure 5, the outer wall of the shielding device 6 is gradually inclined outward from the axial fan 3 to the heat dissipation surface 11. The inclined outer wall of the shielding device 6 plays a guiding role, reducing the direct upward airflow reflection caused by the vertical airflow from the axial fan 3 blowing onto the heat dissipation surface 11, thereby reducing wind resistance.

[0029] Optionally, as shown in Figures 2 and 5, the portion of the heat dissipation surface 11 opposite to the axial fan 3 is provided with a slope 12 that gradually decreases outward from the lower end of the shielding device 6. The slope 12 also serves as a guide, allowing the air blown out by the axial fan 3 to circulate in all directions along the slope 12, reducing the direct upward airflow reflection caused by the vertical airflow from the axial fan 3 blowing onto the heat dissipation surface 11, thereby reducing wind resistance. For example, the slope of the slope 12 can be 30°-45°.

[0030] As an optional implementation, as shown in FIG2, the cross-sectional structure of the shielding device 6 is a circle corresponding to the non-blowing area 32 at the center of the axial fan 3, so as to cover the non-blowing area 32 without blocking the airflow from the axial fan 3.

[0031] As an optional implementation, as shown in Figures 1-2 and 5, the heat dissipation surface 11 is provided with heat dissipation fins 2 and has mounting positions 5. The axial fan 3 is mounted at the mounting position 5 by a fixing device 4. The heat dissipation fins 2 are set outside the mounting position 5, that is, the mounting position 5 is reserved on the heat dissipation surface 11. The heat dissipation fins 2 are set around the mounting position 5. The bottom surface of the mounting position 5 is the heat dissipation surface 11. The end face of the axial fan 3 is flush with the upper end of the heat dissipation fins 2. The axial fan 3 is mounted on the mounting position 5 by the fixing device 4 to dissipate heat for the heat dissipation surface 11 and the heat dissipation fins 2.

[0032] Optionally, as shown in Figure 2, the heat dissipation fins 2 are spaced apart to form a heat dissipation channel. Each side of the heat dissipation fin 2 facing the mounting position 5 has an outlet slope 21. The outlet slope 21 gradually slopes inward from the side away from the mounting position 5 towards the side closer to the mounting position 5, so that the width of the air inlet of the heat dissipation channel is greater than the width inside the heat dissipation channel. This increases the opening area for airflow and reduces wind resistance, allowing the airflow to be more concentrated and smoother from the effective blowing area at the edge of the axial fan 3 to other areas of the heat dissipation fins 2, reducing wind resistance and improving heat dissipation efficiency. The heat dissipation fins 2 can extend in any suitable direction, for example, in a divergent arrangement along the mounting position 5. Exemplarily, in this disclosure, the heat dissipation fins 2 are arranged in parallel, meaning the heat dissipation channel is located on both sides of the mounting position 5. Thus, the slope 12 slopes downward from the center of the axial fan 3 along the extension direction of the heat dissipation channel to both sides.

[0033] Optionally, as shown in Figure 1, the fixing device 4 includes a cover plate 42, a support leg 43, and a connector 41. The cover plate 42 covers the outside of the mounting position 5, and the support leg 43 is set on the mounting position 5 and extends toward the cover plate 42. The cover plate 42 is provided with a first connecting hole 422, the axial fan 3 is provided with a second connecting hole 31, and the support leg 43 is provided with a third connecting hole 431. One end of the connector 41 passes through the first connecting hole 422 and the second connecting hole 31 in sequence and connects to the third connecting hole 431. The axial fan 3 is fixed at the mounting position 5 by the cover plate 42 and the connector 41. For example, the first connecting hole 422, the second connecting hole 31, and the third connecting hole 431 are all bolt holes, and the connector 41 is a connecting bolt. The connection is made by the connecting bolt, which facilitates disassembly and installation.

[0034] Optionally, as shown in Figure 5, the side of the shielding device 6 that contacts the axial fan 3 is flush with the end face of the support leg 43. In this way, the shielding device 6 and the support leg 43 together form a support structure to support the axial fan 3. During installation, the axial fan 3 is placed on the shielding device 6 and the support leg 43, the second connecting hole 31 is aligned with the third connecting hole 431, the cover plate 42 is then put on, the first connecting hole 422 is aligned with the second connecting hole 31, and then the connector 41 is used to fix it.

[0035] Optionally, as shown in Figures 3-4, the cover plate 42 is provided with a vent 421. Both ends of the cover plate 42 extend beyond the mounting position 5 along the direction of the heat dissipation fins 2. The vent 421 is used for air intake, so that the axial fan 3 can smoothly take in air. The cover plate 42 can not only play a fixing role, but also play a windproof role, limiting the airflow along the heat dissipation channel between the heat dissipation fins 2, and preventing the air that just enters the heat dissipation channel from flowing out along the top of the heat dissipation fins 2, thus reducing the cooling area.

[0036] Another object of this disclosure is to provide a vehicle including the above-described vehicle-mounted electronic device, wherein the vehicle-mounted electronic device has a shielding device 6 provided between the axial fan 3 and the heat dissipation surface 11, which reduces the generation of eddies in the non-blowing area 32 in the middle of the axial fan 3, thereby reducing the energy loss of the axial fan 3 and enhancing the heat dissipation effect.

[0037] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0038] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0039] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A vehicle-mounted electronic device, characterized in that, include: A housing having a heat dissipation surface; an axial fan disposed above the heat dissipation surface and blowing air toward the heat dissipation surface; And a shielding device, which is set on the side of the axial fan near the heat dissipation surface and completely covers the non-blowing area in the center of the axial fan.

2. The vehicle-mounted electronic device according to claim 1, characterized in that, The outer wall of the shielding device is gradually inclined outward from the axial fan to the heat dissipation surface.

3. The vehicle-mounted electronic device according to claim 1 or 2, characterized in that, The cross-sectional structure of the shielding device is circular, corresponding to the non-blowing area at the center of the axial fan.

4. The vehicle-mounted electronic device according to claim 1 or 2, characterized in that, The portion of the heat dissipation surface opposite to the axial fan has a slope that gradually decreases outward from the lower end of the shielding device.

5. The vehicle-mounted electronic device according to claim 1, characterized in that, The heat dissipation surface is provided with heat dissipation fins, and the heat dissipation surface has a mounting position. The axial fan is mounted at the mounting position by a fixing device, and the heat dissipation fins are disposed outside the mounting position.

6. The vehicle-mounted electronic device according to claim 5, characterized in that, The heat dissipation fins are spaced apart to form a heat dissipation channel. Each heat dissipation fin has an air outlet slope on both sides of the end facing the mounting position. The air outlet slope gradually slopes inward from the side away from the mounting position to the side closer to the mounting position.

7. The vehicle-mounted electronic device according to claim 5, characterized in that, The fixing device includes a cover plate, a support leg, and a connector. The cover plate covers the outside of the mounting position, the support leg is mounted on the mounting position and extends toward the cover plate, the cover plate has a first connecting hole, the axial fan has a second connecting hole, the support leg has a third connecting hole, and one end of the connector passes through the first connecting hole and the second connecting hole in sequence and is connected to the third connecting hole.

8. The vehicle-mounted electronic device according to claim 7, characterized in that, The side of the shielding device that contacts the axial fan is flush with the end face of the support leg.

9. The vehicle-mounted electronic device according to claim 7, characterized in that, The cover plate is provided with ventilation openings, and both ends of the cover plate extend beyond the mounting position in the direction of the heat dissipation fins.

10. A vehicle, characterized in that, include: The vehicle-mounted electronic device according to any one of claims 1-9.

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