Self-cleaning device, electronic rearview mirror and vehicle

Abstract

The utility model relates to a self-cleaning device, an electronic rearview mirror and a vehicle. The self-cleaning device is applied to the electronic rearview mirror, the electronic rearview mirror comprises a shell and a camera, and the self-cleaning device comprises an air inlet, an airflow channel, a first air outlet and a second air outlet; the airflow channel is arranged in the shell and is used for communicating the air inlet, the first air outlet and the second air outlet; the air inlet is formed in the windward side of the shell and used for air flow entering. The first air outlet and the camera are arranged on the working surface of the shell, and the first air outlet is used for exhausting airflow to the shooting surface of the camera; the second air outlet is formed in the bottom face of the shell and used for discharging pollutants in the airflow channel. By the adoption of the device, dirty rainwater can be blown away through airflow driven when an automobile runs, so that the lens is cleaned, pollutants in the airflow channel are discharged through the second air outlet, the situation that the pollutants in the airflow channel are sprayed out along with the airflow to shield the camera is avoided, and it is guaranteed that the surface of the lens of the camera is cleaned through the dry and clean airflow.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, in particular to a self-cleaning device, an electronic rearview mirror and a vehicle. Background Art

[0002] Traditional car rearview mirrors mainly reflect the surrounding scenery through the reflective surface, providing the vehicle occupants with a rear view, making it easier for them to observe the surrounding environment. Electronic rearview mirrors use cameras to capture the video images behind the vehicle and display them in real time through the built-in display.

[0003] Since the camera lens is easily affected by airflow disturbance when the vehicle is driving, dirty rainwater is easily accumulated on the lens surface of the electronic rearview mirror, resulting in poor image quality collected by the electronic rearview mirror, which can easily cause driving safety problems. Utility Model Content

[0004] Based on this, it is necessary to provide a self-cleaning device, an electronic rearview mirror and a vehicle to address the problem that dirty rainwater is easily accumulated on the lens surface of the electronic rearview mirror.

[0005] In a first aspect, the present application provides a self-cleaning device, which is applied to an electronic rearview mirror, the electronic rearview mirror comprising a housing and a camera, the self-cleaning device comprising an air inlet, an air flow channel, a first air outlet, and a second air outlet;

[0006] The air flow channel is arranged inside the housing and is used to connect the air inlet, the first air outlet and the second air outlet;

[0007] The air inlet is arranged on the windward side of the shell for airflow to enter;

[0008] The first air outlet and the camera are both arranged on the working surface of the shell, and the first air outlet is used to discharge airflow to the shooting surface of the camera;

[0009] The second air outlet is arranged on the bottom surface of the shell body, and is used to discharge pollutants in the air flow channel.

[0010] In one embodiment, a filter is provided in the air flow channel, and the filter is used to separate gas and pollutants.

[0011] In one embodiment, the air flow channel includes a first channel section, a second channel section and a third channel section; a first end of the first channel section, a first end of the second channel section, and a first end of the third channel section are connected; a second end of the first channel section is connected to an air inlet; a second end of the second channel section is connected to a first air outlet; a second end of the third channel section is connected to a second air outlet;

[0012] The filter screen is arranged at the first end of the second channel section.

[0013] In one embodiment, the air inlet is larger than the first air outlet; and the cross section of the first channel section is larger than the cross section of the second channel section.

[0014] In one embodiment, a cross-section of the first end of the second channel segment is larger than a cross-section of the first end of the third channel segment.

[0015] In one embodiment, the cross section of the first air outlet is an oblique cross section, and the first air outlet faces a shooting surface of the camera.

[0016] In one embodiment, a heating wire is provided in the air flow channel, and the heating wire is used to heat the air flow in the air flow channel.

[0017] In one embodiment, the height of the air inlet is greater than the height of the first air outlet, and the height of the first air outlet is greater than the height of the second air outlet.

[0018] In a second aspect, the present application also provides an electronic rearview mirror, which includes the self-cleaning device described above.

[0019] In a third aspect, the present application also provides a vehicle, which includes the electronic rearview mirror as described above.

[0020] The above-mentioned self-cleaning device is provided with an air inlet on the windward side of the electronic rearview mirror and an airflow channel inside the housing of the electronic rearview mirror. The air can be compressed through the airflow channel and ejected through the first air outlet. The airflow driven by the car when driving is used to disrupt the airflow on the surface of the camera lens to form an airflow protective film. Dirty rainwater can be blown away, and the lens can be cleaned by aerodynamics. This device is safe, reliable, low-carbon and environmentally friendly. By providing a second air outlet to discharge pollutants in the airflow channel, it is possible to prevent pollutants in the airflow channel from being ejected with the airflow to block the camera, thereby ensuring that a relatively dry and clean airflow cleans the surface of the camera lens. The utility model can improve the safety of the electronic rearview mirror. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of a self-cleaning device in one embodiment of the present application.

[0022] Figure 2 Schematic diagram of the air flow channel of the self-cleaning device in one embodiment of the present application.

[0023] Figure 3 Schematic diagram of a first air outlet of a self-cleaning device in an embodiment of the present application.

[0024] Figure 4 Schematic diagram of the structure of an electronic rearview mirror in one embodiment of the present application.

[0025] Figure 5It is a schematic diagram of the structure of a vehicle in one embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0027] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0028] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0030] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the 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. The first feature being "below", "below" and "below" the 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.

[0031] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0032] See also Figure 1 , Figure 1 A structural schematic diagram of a self-cleaning device in an embodiment of the present application is shown. The self-cleaning device 20 provided in an embodiment of the present application is applied to an electronic rearview mirror 10. The electronic rearview mirror 10 includes a shell 102 and a camera 104. The self-cleaning device 20 includes an air inlet 202, an air flow channel 204, a first air outlet 206, and a second air outlet 208; the air flow channel 204 is arranged inside the shell 102, for connecting the air inlet 202, the first air outlet 206 and the second air outlet 208; the air inlet 202 is arranged on the windward surface of the shell 102 for air flow to enter; the first air outlet 206 and the camera 104 are both arranged on the working surface of the shell 102, and the first air outlet 206 is used to discharge air flow to the shooting surface of the camera 104; the second air outlet 208 is arranged on the bottom surface of the shell 102, for discharging pollutants in the air flow channel 204.

[0033] It is understood that, similar to a conventional rearview mirror, the housing 102 of the electronic rearview mirror 10 in the present application includes a windward surface, a working surface, and a bottom surface. The windward surface is the side of the housing 102 of the electronic rearview mirror 10 that faces the wind (see Figure 1 The bottom surface is the side of the housing 102 of the electronic rearview mirror 10 closest to the ground (see Figure 1 ); the working surface, also called the mirror surface, is an important window for the driver to observe the surrounding conditions of the vehicle. The working surface of the traditional rearview mirror is provided with a lens, while the working surface of the housing 102 of the electronic rearview mirror 10 is installed with a camera 104.

[0034] Among them, by setting the air inlet 202 on the windward surface of the housing 102, air can flow into the airflow channel 204 during the driving of the vehicle. By setting the first air outlet 206, air can be discharged to the shooting surface of the camera 104 to clean dust or rainwater. By setting the second air outlet 208, pollutants in the airflow channel 204 can be discharged, so that the gas discharged from the first air outlet 206 is drier and cleaner. The shooting surface of the camera 104 refers to the lens surface of the camera 104. Pollutants can be understood as dust and water droplets in the airflow channel 204.

[0035] The airflow channel 204 can be understood as a main channel and a bifurcated channel, wherein the main channel is used to connect the air inlet 202 and the first air outlet 206, and the bifurcated channel is used to connect the main channel and the second air outlet 208. Optionally, starting from the air inlet 202, the cross-section of the main channel gradually decreases. Optionally, the cross-section of the airflow channel 204 is circular or rectangular, which is not limited in this embodiment. In one implementation, the center line of the airflow channel 204 is an arc or a fold line.

[0036] In one implementation, the cross section of the air flow channel 204 is circular, and the cross sections of the air inlet 202 , the first air outlet 206 , and the second air outlet 208 are all circular.

[0037] In one implementation, the cross section of the air flow channel 204 is rectangular, and the cross sections of the air inlet 202 , the first air outlet 206 , and the second air outlet 208 are all rectangular.

[0038] In this embodiment, an air inlet is provided on the windward side of the electronic rearview mirror, and an airflow channel is provided inside the housing of the electronic rearview mirror. The air can be compressed through the airflow channel and ejected through the first air outlet. The airflow driven by the car when it is running can be used to disrupt the airflow on the surface of the camera lens to form an airflow protective film. Dirty rainwater can be blown away, and the lens can be cleaned by aerodynamics. This device is safe, reliable, low-carbon and environmentally friendly. By providing a second air outlet to discharge pollutants in the airflow channel, it is possible to prevent pollutants in the airflow channel from being ejected with the airflow to block the camera, thereby ensuring that a relatively dry and clean airflow cleans the surface of the camera lens. The self-cleaning device of this embodiment can improve the safety of the electronic rearview mirror.

[0039] Combination Figure 2 As shown, Figure 2 A schematic diagram of an airflow channel 204 of a self-cleaning device 20 in an embodiment of the present application is shown. In one embodiment, a filter screen 210 is disposed in the airflow channel 204, and the filter screen 210 is used to separate gas and pollutants.

[0040] It is understandable that, during the driving process of the vehicle, the airflow enters the airflow channel 204 through the air inlet 202, is filtered through the filter 210, and the filtered airflow is discharged through the first air outlet 206, thereby cleaning the shooting surface of the camera 104. Due to its own gravity and the driving force of the airflow, the pollutants intercepted by the filter 210 are discharged through the second air outlet 208.

[0041] In one implementation, the airflow channel 204 can be understood as a main channel and a forked channel, wherein the main channel is used to connect the air inlet 202 and the first air outlet 206, and the forked channel is used to connect the main channel and the second air outlet 208; the forked channel is connected to the lowest point of the main channel, which can prevent pollutants from flowing back to the air inlet 202 or the first air outlet 206.

[0042] In this embodiment, by providing a filter 210 in the air flow channel 204 , pollutants can be intercepted, ensuring that a relatively dry and clean air flow cleans the lens surface of the camera 104 .

[0043] Reference Figure 2 In an exemplary embodiment, the air flow channel 204 includes a first channel section 2042, a second channel section and a third channel section; the first end of the first channel section 2042, the first end of the second channel section 2044, and the first end of the third channel section are connected; the second end of the first channel section 2042 is connected to the air inlet 202; the second end of the second channel section 2044 is connected to the first air outlet 206; the second end of the third channel section 2046 is connected to the second air outlet 208; the filter 210 is arranged at the first end of the second channel section 2044.

[0044] The filter 210 can be disposed at any position in the second channel section 2044. Preferably, the filter 210 is disposed at the first end of the second channel section 2044, and can discharge the intercepted pollutants through the second air outlet 208 in time, avoiding clogging of the filter 210 and affecting the airflow discharge of the first air outlet 206.

[0045] In an exemplary embodiment, the air inlet 202 is larger than the first air outlet 206 ; and the cross-section of the first channel section 2042 is larger than the cross-section of the second channel section 2044 .

[0046] The cross section of the first channel section 2042 gradually decreases from the second end to the first end, and the cross section of the first channel section 2042 gradually decreases from the first end to the second end. Since the total amount of airflow flowing in from the air inlet 202 and the airflow flowing out from the air outlet remains unchanged, the airflow channel gradually narrows, making the air flow rate faster, and the high-speed airflow is ejected from the first air outlet 206 to clean the lens surface of the camera 104.

[0047] In an exemplary embodiment, the cross-section of the first end of the second channel segment 2044 is larger than the cross-section of the first end of the third channel segment 2046 .

[0048] Among them, the cross-section of the first end of the second channel section 2044 is set to be larger than the cross-section of the first end of the third channel section 2046, so that a larger portion of the airflow in the airflow channel 204 flows through the second channel section 2044 and is ejected through the first air outlet 206, and the airflow flow from the main channel into the branch channel is relatively small, thereby avoiding affecting the airflow flow of the main channel and maintaining the stability of the airflow flow of the main channel.

[0049] Combination Figure 3 As shown, Figure 3 A schematic diagram of the first air outlet 206 of the self-cleaning device 20 in an embodiment of the present application is shown. In an exemplary embodiment, the cross section of the first air outlet 206 is an oblique cross section, and the first air outlet 206 faces the shooting surface of the camera 104 .

[0050] The first air outlet 206 is provided as an oblique cross section, which helps to direct the airflow in a specific direction (see Figure 3 The direction of the arrow shown), that is, the shooting surface toward the camera 104, can maintain the clarity and stability of the camera 104 and improve the shooting quality.

[0051] In an exemplary embodiment, a heating wire is disposed in the airflow channel 204 , and the heating wire is used to heat the airflow in the airflow channel 204 .

[0052] Among them, in a low temperature environment, the lens of the camera 104 is prone to frost or ice, which affects the shooting quality. The heating wire heats the airflow in the airflow channel 204, and the heated airflow is ejected from the first air outlet 206, which can increase the temperature of the lens surface and prevent frost and ice. In a humid environment, the lens of the camera 104 is prone to water stains, which affects the shooting quality. Through the structure of this embodiment, the heated airflow is ejected from the first air outlet 206, which can keep the lens surface dry and clear, and ensure the shooting quality of the camera 104.

[0053] In an exemplary embodiment, the height of the air inlet 202 is greater than the height of the first air outlet 206 , and the height of the first air outlet 206 is greater than the height of the second air outlet 208 .

[0054] Among them, the height of the air inlet 202 is set greater than the air outlet, forming a natural pressure difference, which helps the air flow to flow in more smoothly from the air inlet and be discharged through the lowered air outlet, reducing the resistance and vortex of the air flow in the air flow channel 204 and improving the circulation efficiency of the air flow.

[0055] The height of the second air outlet 208 is set to be minimum, so that pollutants in the air flow channel 204 can be discharged more smoothly from the second air outlet 208 based on their own gravity, thereby ensuring that a relatively dry and clean air flow cleans the surface of the camera lens.

[0056] In an exemplary embodiment, referring to Figure 4 , Figure 4 A schematic structural diagram of an electronic rearview mirror 10 in an embodiment of the present application is shown. The electronic rearview mirror 10 includes a housing 102 and a camera 104. The electronic rearview mirror 10 also includes a self-cleaning device 20 as provided in any embodiment of the present application.

[0057] Those skilled in the art will understand that Figure 4 The structure shown in the figure is merely a block diagram of a partial structure related to the present application scheme, and does not constitute a limitation on the electronic rearview mirror 10 to which the present application scheme is applied. The specific electronic rearview mirror 10 may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0058] In an exemplary embodiment, referring to Figure 5 , Figure 5 The schematic diagram of the structure of a vehicle 30 in an embodiment of the present application is shown. The vehicle 30 includes at least one electronic rearview mirror 10, and the electronic rearview mirror 10 includes a self-cleaning device 20 as provided in any embodiment of the present application.

[0059] Those skilled in the art will understand that Figure 5 The structure shown in the figure is merely a block diagram of a portion of the structure related to the solution of the present application, and does not constitute a limitation on the vehicle 30 to which the solution of the present application is applied. The specific vehicle 30 may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0060] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A self-cleaning device, the self-cleaning device is applied to an electronic rearview mirror, the electronic rearview mirror comprises a housing and a camera, characterized in that: The self-cleaning device comprises an air inlet, an air flow channel, a first air outlet and a second air outlet; The air flow channel is arranged inside the housing and is used to connect the air inlet, the first air outlet and the second air outlet; The air inlet is arranged on the windward side of the housing for airflow to enter; The first air outlet and the camera are both arranged on the working surface of the housing, and the first air outlet is used to discharge airflow toward the shooting surface of the camera; The second air outlet is arranged on the bottom surface of the shell and is used to discharge pollutants in the air flow channel.

2. The self-cleaning device according to claim 1, characterized in that: A filter screen is arranged in the air flow channel, and the filter screen is used to separate gas and pollutants.

3. The self-cleaning device according to claim 2, characterized in that: The airflow channel comprises a first channel section, a second channel section and a third channel section; a first end of the first channel section, a first end of the second channel section, and a first end of the third channel section are connected; a second end of the first channel section is connected to the air inlet; a second end of the second channel section is connected to the first air outlet; a second end of the third channel section is connected to the second air outlet; The filter screen is arranged at the first end of the second channel section.

4. The self-cleaning device according to claim 3, characterized in that: The air inlet is larger than the first air outlet; and the cross section of the first channel section is larger than the cross section of the second channel section.

5. The self-cleaning device according to claim 3, characterized in that: The cross-section of the first end of the second channel segment is larger than the cross-section of the first end of the third channel segment.

6. The self-cleaning device according to any one of claims 1 to 5, characterized in that: The cross section of the first air outlet is an oblique cross section, and the first air outlet faces the shooting surface of the camera.

7. The self-cleaning device according to any one of claims 1 to 5, characterized in that: A heating wire is arranged in the air flow channel, and the heating wire is used to heat the air flow in the air flow channel.

8. The self-cleaning device according to any one of claims 1 to 5, characterized in that: The height of the air inlet is greater than the height of the first air outlet, and the height of the first air outlet is greater than the height of the second air outlet.

9. An electronic rearview mirror, characterized in that: The electronic rearview mirror comprises a self-cleaning device as claimed in any one of claims 1 to 8.

10. A vehicle, characterized in that: The vehicle includes the electronic rearview mirror as claimed in claim 9.

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