CN218336224U - Camera cleaning device and camera module - Google Patents

Abstract

The utility model discloses a camera cleaning device and camera module, the camera module comprises a camera component and a camera cleaning device, the camera cleaning device is connected with the camera component and is used for cleaning the camera component, the camera cleaning device is arranged on one side of the camera component; the camera cleaning device comprises an airflow generating mechanism and a flow guide mechanism for guiding the airflow generated by the airflow generating mechanism, wherein the airflow generates a narrow tube effect under the action of the flow guide mechanism to form curtain-shaped airflow, and the cleaning of the camera component is realized by the action of the curtain-shaped airflow on the camera component; the utility model discloses an air current that forms the curtain form cleans the module of making a video recording, avoids the lens to be sheltered from by things such as water droplet, dust, guarantees the imaging quality.

Description

Camera cleaning device and camera module

Technical Field

The utility model relates to a clean technical field of camera especially relates to a camera cleaning device and camera module.

Background

The working principle of the camera is roughly as follows: the scene is projected on the surface of an image sensor through an optical image generated by a LENS (LENS), then converted into an electric signal, converted into a digital image signal through A/D (analog-to-digital conversion), and then sent into a digital signal processing chip (DSP) for processing, and the image can be seen through a display.

The one side of current camera generally at the camera lens is equipped with the one deck screening glass, and the camera is in complicated environment such as rainwater weather, muddy water road surface, dust road or aerial dust, and the outer screening glass of camera lens is sheltered from by things such as water droplet, dust easily, and the scenery passes through the camera lens and generates optical image and will be sheltered from by things such as water droplet, dust, makes the image of obtaining not good, sees unclear even. Especially, the vehicle-mounted camera applied to the aspect of vehicle mounting can prevent a driver from accurately acquiring information around the vehicle after the protection plate is shielded, so that potential safety hazards exist, and dangers are brought to vehicles, traffic, drivers and passengers and the like.

Disclosure of Invention

An object of the utility model is to provide a camera cleaning device and camera module can form curtain form air current and clean the camera, avoids the lens to be sheltered from by things such as water droplet, dust, guarantees imaging quality.

The utility model provides a camera cleaning device for clean camera, camera cleaning device includes that the air current produces the mechanism and is used for right the produced air current of mechanism carries out the water conservancy diversion mechanism that leads, the air current produces the mechanism setting and is in one side of water conservancy diversion mechanism, set up air intake, air outlet and intercommunication in the water conservancy diversion mechanism the air intake with the water conservancy diversion passageway of air outlet, the air intake with the air outlet sets up respectively the both sides of water conservancy diversion passageway, the air intake with the air current produces the mechanism intercommunication in order to collect the air current, wherein, the cross sectional area of air outlet is less than the cross sectional area of air intake, air current flow is by diminishing greatly when the air outlet from the water conservancy diversion passageway, makes the air current is passing through produce the narrow tube effect and form curtain form air current during the air outlet.

Furthermore, the airflow generating mechanism comprises an input end for air intake and an output end for pushing the air to form airflow and outputting the airflow, and the output end is arranged corresponding to the air inlet.

Furthermore, the flow guide mechanism further comprises a guide surface formed in the flow guide channel, the guide surface is located on the inner wall of the guide channel and is right opposite to the area of the air inlet, and the guide surface is used for guiding the airflow entering the flow guide channel from the air inlet towards the air outlet.

Furthermore, the water conservancy diversion mechanism includes the water conservancy diversion spare, the water conservancy diversion passageway sets up the inside of water conservancy diversion spare the air intake with the air outlet sets up respectively the relative both sides limit of water conservancy diversion spare, wherein, the spigot surface is along the direction orientation of air intake the direction of air outlet slopes gradually, the air intake sets up the top surface of water conservancy diversion spare, the air outlet sets up one side of the bottom surface of water conservancy diversion spare.

Furthermore, the shape of the air outlet comprises at least one of a slit, a rectangular hole, a waist-shaped hole and a hole column consisting of a plurality of through holes which are linearly arranged or arranged in a belt shape, and the cross section of the flow guide channel is in a circular, oval or rectangular shape.

The utility model also provides a camera module, including subassembly and foretell camera cleaning device make a video recording, camera cleaning device with the subassembly of making a video recording is connected and is used for the cleanness the subassembly of making a video recording, camera cleaning device set up in one side of subassembly of making a video recording.

Further, the camera shooting assembly comprises a lens and a shell, the camera cleaning device is arranged on the shell, and the lens is arranged inside the shell.

Further, the casing still includes the protection sheet that is used for protecting the camera lens, the protection sheet sets up one side on the camera lens is towards the optical axis direction of shooing the object, curtain form air current flows through the optical axis of camera lens with the nodical department of protection sheet.

Further, the air-out direction that the air outlet formed with protect the piece surface parallel, the air-out direction that the air outlet formed with the angle that the optical axis of camera lens formed equals 90, just curtain form air current flows through the protection piece is kept away from the one side surface of camera lens.

The camera shooting assembly further comprises a processor, and the processor is electrically connected with the airflow generating mechanism and used for judging whether an image generated by the lens is fuzzy or not and controlling the airflow generating device to work according to a judgment result.

The utility model provides a camera module passes through the air current produces the mechanism and produces the air current, and the air current is followed the air intake to the water conservancy diversion passageway, then flows from the air outlet, because the cross sectional area of air outlet is less than the cross sectional area of water conservancy diversion passageway, the air current flow is by diminishing greatly when the air current flows through the air outlet from the water conservancy diversion passageway, consequently the air current is followed the water conservancy diversion passageway passes through take place the narrow tube effect during the air outlet and improve the velocity of flow to form curtain form air current, the velocity of flow of curtain form air current is high, and the impact force is strong, right the cleanness of subassembly of making a video recording is effectual.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is the embodiment of the utility model provides an in the embodiment structure schematic diagram of camera cleaning device and camera module.

Fig. 2 is the embodiment of the utility model provides an in the embodiment split structure sketch map of the first angle of camera cleaning device and camera module.

Fig. 3 is the embodiment of the utility model provides an in the embodiment split structure sketch map of the second angle of camera cleaning device and camera module.

Fig. 4 is a schematic sectional structure view of the camera cleaning device in the embodiment of the present invention.

Fig. 5 is a schematic bottom view of the diversion mechanism in the embodiment of the present invention.

Fig. 6 is the embodiment of the utility model provides an in camera cleaning device and camera module be in operating condition's sectional structure sketch map.

Reference numerals: 1. a camera cleaning device; 11. an airflow generating mechanism; 111. an output end; 12. a flow guide mechanism; 121. a flow guide member; 122. an air inlet; 123. an air outlet; 124. a flow guide channel; 125. a guide surface; 2. a camera assembly; 21. a housing; 22. a lens; 23. and (6) protecting the sheet.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Please refer to fig. 1-3, the utility model provides a camera cleaning device 1 and camera module, the camera module includes this camera cleaning device 1 and camera module 2, forms a curtain form air current through camera cleaning device 1, cleans camera module 2, avoids camera module 2 to be sheltered from by things such as water droplet, dust, guarantees imaging quality, is fit for the wide application in on-vehicle aspect.

Referring to fig. 2 to 4, the camera cleaning device 1 includes an airflow generating mechanism 11 for generating an airflow and a flow guiding mechanism 12 for guiding the airflow generated by the airflow generating mechanism 11, the airflow generating mechanism 11 is disposed on one side of the flow guiding mechanism 12, the flow guiding mechanism 12 includes a flow guiding element 121, an air inlet 122, an air outlet 123 and a flow guiding channel 124 communicating the air inlet 122 and the air outlet 123 are disposed on the flow guiding element 121, the air inlet 122 and the air outlet 123 are respectively disposed on two sides of the flow guiding channel 124, the air inlet 122 is communicated with the airflow generating mechanism 11 to collect the airflow generated by the airflow generating mechanism 11, so that the airflow generated by the airflow generating mechanism 11 can smoothly enter the air inlet 122, and then the airflow flows from the air inlet 122 into the flow guiding channel 124 and finally flows out from the air outlet 123, because the cross-sectional area of the air inlet 123 is smaller than the cross-sectional area of the air inlet 122, the airflow flows through the air outlet 123 from the flow guiding channel 124 and forms a curtain-like airflow when passing through the air outlet 123.

In this embodiment, the airflow generating mechanism 11 is connected above the airflow guiding mechanism 12, the air inlet 122 is disposed on a side of the airflow guiding mechanism 12 close to the airflow generating mechanism 11, and the air outlet 123 is disposed on a side of the airflow guiding mechanism 12 close to the camera module 2.

With the above arrangement, by generating the airflow by the airflow generating mechanism 11, since the cross-sectional area of the air outlet 123 is smaller than the cross-sectional area of the air inlet 122, the flow of the airflow is reduced from the air guide channel 124 when flowing through the air outlet 123, so that the airflow generates the narrow tube effect when passing through the air guide channel 124 and improves the flow rate of the airflow, so as to form the curtain-shaped airflow, which has high flow rate, strong impact force, and good cleaning effect on the camera module 2.

Specifically, the airflow generating mechanism 11 and the flow guiding mechanism 12 are respectively provided with a screw hole, and the airflow generating mechanism 11 and the flow guiding mechanism 12 are fastened and connected through a screw. The camera cleaning device 1 and the camera assembly 2 can be fixedly connected through glue or viscose glue, and can also be fixedly connected through a buckle or a screw.

Further, referring to fig. 3 and fig. 6, the airflow generating mechanism 11 includes an input end for inputting air and an output end 111 for pushing the air to form an airflow and outputting the airflow, the output end 111 is disposed corresponding to the air inlet 122, and an aperture of the output end 111 is smaller than or equal to an aperture of the air inlet 122. In this way, the airflow generated by the airflow generating mechanism 11 can be stably output to the air inlet 122 of the air guide mechanism 12.

Referring to fig. 1, the airflow generating mechanism 11 is a fan, and when the camera cleaning device 1 is used, a power supply (not shown) is connected to drive blades of the fan to rotate, so as to push air to form an airflow, and the airflow is output from the output end 111 and enters the diversion channel 124 through the air inlet 122. Wherein, the axial flow fan is preferred, and the air can be pushed to flow in the same direction as the shaft; the airflow generating mechanism 11 may be other devices capable of generating airflow.

Further, referring to fig. 4, the guiding mechanism 12 further includes a guiding surface 125 formed in the guiding channel 124, the guiding surface 125 is located on an inner wall of the guiding channel 124 and faces the area of the air inlet 122, and is used for guiding the air flow entering the guiding channel 124 from the air inlet 122 toward the air outlet 123.

With the above arrangement, the guiding surface 125 guides the air flow entering the flow guiding channel 124 to the air outlet 123, so as to prevent the air flow in the flow guiding channel 124 in different directions from offsetting each other to influence the flow velocity of the curtain-shaped air flow, thereby influencing the cleaning effect.

Further, referring to fig. 4, the shape of the flow guiding element 121 is substantially a rectangular parallelepiped, the air inlet 122 and the air outlet 123 are respectively disposed on two opposite sides of the flow guiding element 121, that is, two opposite sidewalls of the flow guiding element 121, wherein the flow guiding channel 124 is disposed inside the flow guiding element 121 to communicate the air inlet 122 with the air outlet 123; a guide surface 125 is formed in a region of the guide member 121 where an inner wall at the position of the guide surface 125 faces the air inlet 122, that is, a partial side wall region of the guide channel 124, and one end of the guide surface 125 is gradually inclined from the direction of the air inlet 122 in the direction toward the air outlet 123, so that the width of the guide channel 124 is gradually enlarged from the direction of the air inlet 122 in the direction toward the air outlet 123; the cross section of the flow guide channel 124 is circular, oval or rectangular. Wherein, the arrow in fig. 4 is the direction of the airflow generated by the airflow generating mechanism 11 flowing in the flow guide 121.

In this embodiment, the air inlet 122 and the air outlet 123 are respectively disposed on two opposite side walls of the flow guiding member 121, the air inlet 122 is disposed on a top surface of the flow guiding member 121, the air outlet 123 is disposed on one side of a bottom surface of the flow guiding member 121, the airflow generated by the airflow generating mechanism 11 enters the flow guiding channel 124 from the air inlet 122, flows from a direction of the air inlet 122 to a direction of the air outlet 123 under a guiding effect of the guiding surface 125, then flows out through the air outlet 123 and acts on the image pickup assembly 2, precisely flows out from the air outlet 123 and acts on the protection sheet 23, so as to clean up impurities such as water drops, dust, and the like on the protection sheet 23.

Further, the shape of the air outlet 123 includes at least one of a slit, a rectangular hole, a kidney-shaped hole, and a hole array composed of a plurality of through holes arranged in a straight line or in a strip shape.

Specifically, the air outlet 123 may be one or a combination of two or more of the above shapes, and is arranged along a straight line, an arc line or a curved line, and the air outlet 123 may form the curtain-shaped airflow. In the present embodiment, referring to fig. 5, the air outlet 123 is a waist-shaped hole.

Referring to fig. 1-4, an embodiment of the present invention further provides a camera module, which includes a camera assembly 2 and the camera cleaning device 1, where the camera cleaning device 1 is connected to the camera assembly 2, the camera cleaning device 1 is disposed above the camera assembly 2, and the camera cleaning device 1 is used to clean the camera assembly 2.

Further, referring to fig. 6, the camera module 2 includes a lens 22 and a housing 21, the camera cleaning device 1 is disposed on the housing 21, and the lens 22 is disposed inside the housing 21.

Specifically, referring to fig. 6, the lens 22 is installed inside the housing 21, and a through hole is formed on a sidewall of the housing 21 close to the shooting direction of the lens 22, so that the lens 22 can normally receive external light to generate an image.

Further, the housing 21 further includes a protection sheet 23 for protecting the lens 22, the protection sheet 23 can isolate foreign matters such as external water drops and dust from being contaminated on the lens 22, the protection sheet 23 is disposed on one side of the housing 21 in the direction of the optical axis of the lens 22 facing the object to be photographed, an intersection point exists between the protection sheet 23 and the optical axis of the lens 22, and the curtain-shaped airflow flows through the optical axis of the lens 22 and the protection sheet 23, so that the curtain-shaped airflow can clean the protection sheet 23.

In this embodiment, referring to fig. 1 and 6, the camera cleaning device 1 is disposed above the protective sheet 23, the air outlet 123 is disposed directly above the protective sheet 23, and the outer surface of the protective sheet 23 is located on the flow path of the curtain-like airflow. Wherein, the arrow in fig. 6 is the direction in which the air flow generated by the air flow generating mechanism 11 flows in the flow guide member 121.

Specifically, the optical axis of the lens 22 extends outward, and the light included in the maximum angular shooting range of the lens 22 resembles a fan shape in the plane view; wherein, the protection sheet 23 is made of transparent material to avoid obstructing the lens 22 from capturing external images, the maximum angle capturing range of the optical axis of the lens 22 passing through the protection sheet 23 is located on the protection sheet 23, and the area of the maximum angle capturing range is greater than or equal to the size of the surface of the protection sheet 23, in other words, the light received by the lens 22 during capturing passes through the protection sheet 23. In this way, the protective sheet 23 can better isolate the influence of foreign matters such as external water drops and dust on the imaging of the lens 22, and the protective sheet does not influence the imaging of the lens 22; meanwhile, the curtain-shaped airflow can better clean water drops, dust and other impurities in the maximum angle shooting range when the optical axis of the lens 22 passes through the protection sheet 23.

In addition, according to the use requirement, the protection sheet 23 may also be a filter with a filtering function to adapt to cameras with different functions used in different requirements, such as infrared cameras and the like; in this way, the protection sheet 23 can not only protect the lens 22 itself and block dirt, but also filter a part of light according to the use requirement, so that the lens 22 can be better imaged.

Further, referring to fig. 1-3 and fig. 6, in the present embodiment, an air outlet direction formed by the air outlet 123 is parallel to the surface of the protection sheet 23, an angle formed by the air outlet direction formed by the air outlet 123 and the optical axis of the lens 22 is equal to 90 °, and the curtain-shaped airflow flows through the outer surface of the protection sheet 23 on the side away from the lens 22, and the outer surface of the protection sheet 23 on the side is located on the flow path of the curtain-shaped airflow.

With the above arrangement, the curtain-like airflow flowing out from the air outlet 123 can directly impact the foreign matters such as water droplets and dust adhered to the outer surface of the protective sheet 23 on the side away from the lens 22, so that the direction of the force of adhesion between the foreign matters such as water droplets and dust and the protective sheet 23 is perpendicular to the direction of the impact force generated by the curtain-like airflow, and therefore, the foreign matters such as water droplets and dust adhered to the lens 22 are easily flushed away by the curtain-like airflow.

In another embodiment, the air outlet direction of the air outlet 123 is disposed toward the intersection point between the optical axis of the lens 22 and the protection sheet 23, and the air outlet direction of the air outlet 123 is disposed close to the lens 22 and inclined with respect to the optical axis of the lens 22, so that the curtain-like airflow acts on the intersection point between the optical axis of the lens 22 and the outer surface of the protection sheet 23.

Specifically, casing 21 is being close to be provided with on the lateral wall of camera lens 22 and be used for the installation the trench of protection sheet 23, this trench corresponds with the through-hole on the lateral wall of casing 21, and like this, protection sheet 23 is guaranteeing camera lens 22 can normally make a video recording while also can play the guard action to camera lens 22, when camera subassembly 2 need clean, camera cleaning device 1 only need right protection sheet 23 cleans. In this embodiment, the protection sheet 23 is a smooth plane on the side away from the lens 22, which is not only beneficial for the cleaning operation of the camera cleaning device 1, but also does not affect the normal operation of the lens 22.

Further, the camera module 2 further includes a processor (not shown in the figure), and the processor is electrically connected to the airflow generating mechanism 11, and is configured to determine whether the image generated by the lens 22 is blurred and control the airflow generating mechanism 11 to operate according to the determination result. When the processor detects the image blur generated by the lens 22, it controls the airflow generating mechanism 11 to operate to generate a curtain-like airflow to clean the lens 22, wherein the processor may be a digital signal processor.

When the digital image processing device is used, the lens 22 generates an image in real time, the generated image is converted into a digital image signal through analog-to-digital conversion and is transmitted to the processor, and the processor detects the image converted into the digital image signal in real time and judges whether the definition of the image is lower than a preset standard value or not; when the definition of the image is lower than a preset standard value, the processor judges that the camera shooting component 2 needs to be cleaned, and then controls the air flow generating mechanism 11 to work, and cleans the camera shooting component 2 until the processor detects that the definition of the image is larger than the preset standard value, and controls the air flow generating mechanism 11 to stop working. The image blur detection method is the prior art, and will not be described herein.

In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. It will be understood that when an element such as a layer, region or substrate is referred to as being "formed on," "disposed on" or "located on" another element, it can be directly on the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly formed on" or "directly disposed on" another element, there are no intervening elements present.

In this document, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and include, for example, fixed and removable connections as well as integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms can be understood in a specific case to those of ordinary skill in the art.

In this document, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for the sake of clarity of the technical solution and convenience of description, and thus, should not be construed as limiting the present invention.

As used herein, the ordinal adjectives "first", "second", etc., used to describe an element are merely to distinguish between similar elements and do not imply that the elements so described must be in a given sequence, either temporally, spatially, in ranking, or in any other manner.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

In this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, which may include other elements not expressly listed in addition to those listed.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a camera cleaning device for clean camera, its characterized in that, camera cleaning device includes that the air current produces the mechanism and is used for right the produced air current of mechanism carries out the water conservancy diversion mechanism that leads, the air current produces the mechanism setting and is in one side of water conservancy diversion mechanism, set up air intake, air outlet and intercommunication in the water conservancy diversion mechanism the air intake with the water conservancy diversion passageway of air outlet, the air intake with the air outlet sets up respectively the both sides of water conservancy diversion passageway, the air intake with the air current produces the mechanism intercommunication in order to collect the air current, wherein, the cross sectional area of air outlet is less than the cross sectional area of air intake, air current flow is by big diminishing when the air current flows through the air outlet from the water conservancy diversion passageway, makes the air current is passing through produce the throat effect and form curtain form air current when the air outlet.

2. The camera cleaning device of claim 1, wherein the airflow generating mechanism comprises an input end for air intake and an output end for pushing the air to form an airflow and outputting the airflow, and the output end is arranged corresponding to the air inlet.

3. The camera cleaning device of claim 1, wherein the flow guide mechanism further comprises a guide surface formed in the flow guide channel, the guide surface being located on an inner wall of the flow guide channel and facing a region of the air inlet, and being configured to guide the airflow entering the flow guide channel from the air inlet toward the air outlet.

4. The camera cleaning device according to claim 3, wherein the flow guide mechanism includes a flow guide member, the flow guide channel is disposed inside the flow guide member, the air inlet and the air outlet are respectively disposed on two opposite sides of the flow guide member, wherein the guide surface is gradually inclined in a direction from the air inlet toward the air outlet, the air inlet is disposed on a top surface of the flow guide member, and the air outlet is disposed on one side of a bottom surface of the flow guide member.

5. The camera cleaning device according to claim 1, wherein the shape of the air outlet includes at least one of a slit, a rectangular hole, a kidney-shaped hole, and a hole column composed of a plurality of through holes arranged in a straight line or a belt shape, and the cross-sectional shape of the flow guide channel is circular, elliptical, or rectangular.

6. A camera module, comprising a camera assembly and a camera cleaning device according to any one of claims 1 to 5, wherein the camera cleaning device is connected with the camera assembly and used for cleaning the camera assembly, and the camera cleaning device is arranged on one side of the camera assembly.

7. The camera module of claim 6, wherein the camera assembly includes a lens and a housing, the camera cleaning device being disposed on the housing, the lens being disposed inside the housing.

8. The camera module according to claim 7, wherein the housing further includes a protective sheet for protecting the lens, the protective sheet being provided on a side of the lens facing in an optical axis direction of a photographic subject, the curtain-like airflow flowing through an intersection of an optical axis of the lens and the protective sheet.

9. The camera module according to claim 8, wherein the air outlet formed by the air outlet is parallel to the surface of the protection sheet, the angle formed by the air outlet and the optical axis of the lens is equal to 90 °, and the curtain-like airflow flows through the outer surface of the protection sheet on the side away from the lens.

10. The camera module of claim 7, wherein the camera assembly further comprises a processor electrically connected to the airflow generating mechanism for determining whether the image generated by the lens is blurred and controlling the airflow generating device to operate according to the determination result.

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