CN218041510U

CN218041510U - Camera and car

Info

Publication number: CN218041510U
Application number: CN202221671752.7U
Authority: CN
Inventors: 郑茂铃; 邱欣周; 柯宇杰; 刘国宁
Original assignee: BYD Semiconductor Co Ltd
Current assignee: Guangdong BYD Energy Saving Technology Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-12-13
Anticipated expiration: 2032-06-30

Abstract

The utility model relates to a camera and an automobile, which comprises a shell, a lens and a heating device; wherein the shell is provided with a containing cavity; the lens comprises a lens barrel and a lens group, the lens barrel is arranged in the accommodating cavity, and an object side lens of the lens group is connected with the lens barrel; the heating device is arranged in the accommodating cavity and connected with the lens barrel so as to transfer heat generated by the heating device to the object side lens through the lens barrel. In the utility model discloses in, heating device can heat the thing side lens under any circumstance to produce the condensation on the prevention thing side lens, thereby can improve the condensation effect of preventing of camera. Meanwhile, in the embodiment, the heating device is connected with the lens barrel, and the heat is transferred to the object side lens through the lens barrel, so that the heat generated by the heating device can be more quickly transferred to the object side lens, the heating efficiency is improved, and the heating device is not required to be directly connected with the object side lens, so that the production and assembly difficulty is reduced.

Description

Camera and car

Technical Field

The utility model belongs to the technical field of the car is made a video recording, a camera and car are related to.

Background

Chinese utility model patent with application number CN201821414389.4 discloses an antifog vehicle-mounted camera, the shell of which is coated with a desiccant layer, and the air humidity in the shell is controlled through the desiccant layer to prevent the condensation phenomenon.

However, this method has a limited anti-condensation effect and cannot meet the actual demand. For example, this does not prevent condensation when the moisture content exceeds the adsorption energy of the desiccant bed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: to the problem that the anti-condensation effect of camera among the prior art is limited, can't satisfy actual demand, provide a camera and car.

In order to solve the above technical problem, an embodiment of the present invention provides a camera, including a housing, a lens, and a heating device; wherein the housing has a receiving cavity; the lens comprises a lens barrel and a lens group, the lens barrel is arranged in the accommodating cavity, and an object side lens of the lens group is connected with the lens barrel; the heating device is arranged in the accommodating cavity and connected with the lens barrel so as to transfer heat generated by the heating device to the object side lens through the lens barrel.

Optionally, the heating device is sleeved outside the lens barrel.

Optionally, the heating device is fixed between the housing and the lens barrel in an extruding manner.

Optionally, the lens barrel includes a barrel body and a flange structure, the flange structure surrounds the outside of the barrel body around an axis of the barrel body, and the heating device is placed on an upper surface of the flange structure.

Optionally, the lens barrel includes a lens barrel body, the lens barrel body includes a barrel body and a cap, and the cap is connected to the barrel body; at least one part of the cover cap is in contact with the object side surface of the object side lens in the axial direction of the cylinder body so as to press the object side lens on the cylinder body; the heating device is connected with the cap, so that heat generated by the heating device is transferred to the object side lens through the cap.

Optionally, the camera further includes a temperature sensor, and the temperature sensor is disposed in the accommodating cavity and is configured to detect a temperature in the accommodating cavity.

Optionally, the shell is provided with an air hole, and the air hole penetrates from the outer surface of the shell to the inner surface of the shell; the camera further comprises a waterproof breathable film, and the waterproof breathable film is arranged on the shell and blocks the air holes.

Optionally, the housing includes a front shell and a rear shell, and the front shell is connected with the rear shell to enclose the accommodating cavity; the front shell is provided with a light hole so as to facilitate the lighting of the lens group; the front shell is a plastic shell, and the rear shell is a metal shell.

Optionally, the camera further includes a circuit board, and the circuit board is disposed in the accommodating cavity and mounted on the rear shell; the circuit board is located behind the lens cone, and an image sensor is arranged on the circuit board and is opposite to the lens cone.

Optionally, the heating device includes a heating body, a conductive wire and a first plug connector, the heating body is connected to the lens barrel, one end of the conductive wire is connected to the heating body, and the other end of the conductive wire is connected to the first plug connector; the camera still includes the circuit board, be equipped with the second plug on the circuit board and connect, first plug connect with but second plug connects the plug connection.

In order to solve the technical problem, an embodiment of the present invention provides an automobile, including any one of the above cameras.

In the embodiment of the utility model provides an in camera and car, heating device can heat the thing side lens under any circumstance to produce the condensation on the prevention thing side lens, thereby can improve the condensation effect of preventing of camera. Meanwhile, in this embodiment, the heating device is connected to the lens barrel, and the heat is transferred to the object-side lens through the lens barrel, so that the heat generated by the heating device can be transferred to the object-side lens more quickly, thereby improving the heating efficiency, and the heating device and the object-side lens are not needed to be directly connected, thereby reducing the difficulty in production and assembly.

Drawings

Fig. 1 is a schematic cross-sectional view of a camera according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of another camera according to an embodiment of the present invention;

FIG. 3 is an enlarged view of area A of FIG. 1;

FIG. 4 is an enlarged view of area B of FIG. 2;

fig. 5 is a schematic structural diagram of a lens according to an embodiment of the present invention.

The reference numerals in the specification are as follows:

100. a camera;

1. a housing; 11. an accommodating chamber; 12. a light-transmitting region; 13. a front housing; 14. a rear housing;

2. a lens; 21. a lens barrel; 211. a lens barrel body; 212. a flange structure; 213. a barrel; 214. capping; 215. an annular sidewall; 216. a raised structure; 217. a step surface; 22. a lens group; 221. an object-side lens; 222. an image side lens; 223. a middle lens; 224. an object side surface; 225. an image side;

3. a heating device; 31. heating the body; 32. a conductive line; 33. a first plug-in connector;

4. a waterproof ring;

5. a circuit board; 51. a second plug-in connector; 52. a first plate; 53. a second plate;

6. an image sensor;

7. a seal ring;

8. a plug-in unit.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 and 2, in an embodiment, the camera 100 includes a housing 1, a lens 2, and a heating device 3, the housing 1 has a receiving cavity 11, and the lens 2 and the heating device 3 are both disposed in the receiving cavity 11. The lens 2 includes a lens barrel 21 and a lens group 22, the lens barrel 21 is disposed in the accommodating cavity 11, an object side lens 221 of the lens group 22 is connected to the lens barrel 21, and the heating device 3 is connected to the lens barrel 21, so that heat generated by the heating device 3 is transferred to the object side lens 221 through the lens barrel 21.

In the present embodiment, the heating device 3 may heat the object side lens 221 in any case to prevent condensation on the object side lens 221, so that the condensation prevention effect of the camera head 100 may be improved. Meanwhile, in the embodiment, the heating device 3 is connected to the lens barrel 21, and the heat is transferred to the object-side lens 221 through the lens barrel 21, so that not only the heat generated by the heating device 3 can be transferred to the object-side lens 221 more quickly to improve the heating efficiency, but also the heating device 3 and the object-side lens 221 do not need to be directly connected to each other, thereby reducing the difficulty in production and assembly.

It will be appreciated that the housing 1 is provided with a light transmissive region 12 to allow for the collection of light by the set of lenses 22. Specifically, as shown in fig. 1 and fig. 2, the light-transmitting area 12 is a light-transmitting hole disposed on the housing 1, and the light-transmitting hole has an outer surface of the housing 1 penetrating through to an inner surface of the housing 1 so as to communicate with the accommodating cavity 11, so that there is no obstruction in the front of the lens group 22, and since the object-side lens 221 is an outermost lens in the lens group 22, the imaging effect of the camera 100 can be improved by only preventing the object-side lens 221 from generating condensation.

As shown in fig. 5, in an actual product, the lens assembly 22 includes, in addition to the object-side lens 221, an image-side lens 222 and a plurality of intermediate lenses 223, wherein the intermediate lenses 223 are disposed between the object-side lens 221 and the image-side lens 222. The image side lens 222 and the intermediate lens 223 are also connected to the lens barrel, and when the heating device 3 heats the lens barrel, the image side lens 222 and the intermediate lens 223 can be heated, so as to further improve the anti-fog effect of the lens group 22.

In an embodiment, the lens barrel 21 is a metal barrel, which can improve the heat conduction performance of the lens barrel 21, and further improve the heating effect on the lens group 22. In addition, the lens barrel 21 may be connected to the housing 1 through an AA process (refer to fig. 1); or the lens cone 21 can be connected with the housing 1 in a threaded fit manner (refer to fig. 2), and at this time, one of the lens cone 21 and the housing 1 is provided with a stud, and the other is provided with a threaded hole; alternatively, the lens barrel 21 may be fixed to the housing 1 by a connector such as a screw.

As shown in fig. 1 and fig. 2, the heating device 3 is sleeved outside the lens barrel 21, so that the connection between the heating device 3 and the lens barrel 21 is firmer, and the heating device 3 can heat each region of the lens barrel 21 more uniformly.

As shown in fig. 1 and fig. 2, in an embodiment, the lens barrel 21 includes a barrel body 211 and a flange structure 212, the lens group 22 is mounted on the barrel body 211, the flange structure 212 is disposed on the barrel body 211, the flange structure 212 surrounds the outside of the barrel body 211 around the axis of the barrel body 211, and the heating device 3 is disposed on the upper surface of the flange structure 212. That is, in the present embodiment, the outer side of the lens barrel 21 is provided with the flange structure 212 to support the heating device 3, so that the heating device 3 can be installed more firmly. The axis of the lens barrel body 211 is the axis of the lens barrel 21. In addition, the flange structure 212 may be a closed loop structure or an open loop structure, or the flange structure 212 may be composed of a plurality of protrusions provided on the lens barrel body 211, and the protrusions are provided at intervals around the axis of the lens barrel body 211.

In one embodiment, the heating device 3 is fixed between the housing 1 and the lens barrel 21 by pressing, which can make the installation of the heating device 3 more convenient. Specifically, as shown in fig. 1 and 3, the heating device 3 is pressed between the lens barrel body 211 and the upper surface of the flange structure 211; alternatively, as shown in fig. 2 and 4, the heating device 3 is pressed between the side surface of the lens barrel body 211 and the housing 1.

As shown in fig. 5, the lens barrel body 211 includes a barrel 213 and a cap 214, the cap 214 being connected to the barrel 213; in the axial direction of the cylinder 213, at least a portion of the cap 214 contacts with the object side surface 224 of the object side lens 221 to press the object side lens 221 onto the cylinder 213; the heating device 3 is connected to the cap 214 so that heat generated by the heating device 3 is transferred to the object side lens 221 through the cap 214. The axial direction of the cylinder 213 is the axial direction of the lens barrel body 211.

As shown in fig. 5, the cap 214 includes an annular sidewall 215 and a raised structure 216; the annular side wall 215 is sleeved outside the cylinder 213 and is coaxially arranged; the projection 216 is disposed at one end of the annular sidewall 215 and is located inside the annular sidewall 215. The hollow portion of the cylinder 213 is a stepped hole, and the object side lens 221 is disposed on a step surface 217 of the stepped hole, wherein an edge of an image side surface 225 of the object side lens 221 contacts the step surface 217, and the protruding structure 216 abuts against an edge of an object side surface 224 of the object side lens 221. In addition, the convex structure 216 is also a ring-shaped structure, and a middle portion of the object-side surface of the object-side lens 221 protrudes out of the convex structure 216.

In addition, as shown in fig. 5, when the lens barrel 21 has the flange structure 212, the flange structure 212 may be disposed outside the annular side wall 215 of the cap 214.

As shown in fig. 1 to 4, the camera head 100 further includes a waterproof ring 4, and the waterproof ring 4 is disposed between the lens barrel 21 and the housing 1 to prevent external liquid from entering the accommodating chamber 11 through the light-transmitting hole. Meanwhile, the waterproof ring 4 is extruded between the heating device 3 and the shell 1, at this time, the waterproof ring 4 is in direct contact with the heating device 3, and the shell 1 extrudes the heating device 3 through the waterproof ring 4, that is, the heating device 3 is actually extruded between the waterproof ring 4 and the lens barrel 21. This arrangement avoids damage to the heating means 3, since the flashing 4 has some flexibility.

As shown in fig. 1 and 2, the camera head 100 further includes a circuit board 5, and the circuit board 5 is disposed in the accommodating cavity 11 and behind the lens barrel 21. The heating device 3 is connected to the circuit board 5 so as to be supplied with power and control the operation thereof through the circuit board 5. Meanwhile, the circuit board 5 is further provided with an image sensor 6, the image sensor 6 is opposite to the lens barrel 21 so as to perform imaging according to the lighting of the lens group 22, wherein external light sequentially passes through the object side lens 221, the middle lens 223 and the image side lens 222 and then reaches the image sensor 6. In this embodiment, the operation of the heating device 3 needs to be controlled by a corresponding controller, which may be directly disposed on the circuit board 5, and the controller is directly connected to the heating device 3; or the controller is a device independent of the camera 100, and when the camera 100 is used, the controller is connected with the circuit board 5, so that the controller is connected with the heating device.

As shown in fig. 1 and 2, in an embodiment, the heating device 3 includes a heating body 31, a conductive wire 32, and a first plug connector 33. The heating body 31 is connected to the lens barrel 21 and is configured to heat the lens barrel 21, wherein the heating body 31 is an annular structure and is sleeved outside the lens barrel 21, and in addition, the heating body 31 may be a heating wire, a heating film, an ITO film, or the like. One end of the conductive wire 32 is connected to the heating body 31, and the other end of the conductive wire 32 is connected to the first plug connector 33. The circuit board 5 is provided with a second plug connector 51, and the first plug connector 33 is connected with the second plug connector 51 in a pluggable manner. This arrangement facilitates assembly of the camera head 100.

In an embodiment, the second plug connector 51 is a three PIN plug, and includes a positive PIN, a negative PIN, and a ground PIN, the conductive wire 32 has a three-way lead, and the three leads are respectively connected to the three PINs, so that the static electricity conducting effect can be achieved through the heating device 3.

As shown in fig. 1 and 2, the wiring board 5 includes a first board 52 and a second board 53, the first board 52 and the second board 53 are disposed at an interval, wherein the first board 52 is disposed in front of the second board 53, the image sensor 6 is disposed on the first board 52, and the heating device 3 is attached to the second board 53, that is, the second plug connector 51 is disposed on the second board 53. This arrangement can save space and is advantageous for the compact design of the camera head 100.

As shown in fig. 1 and 2, the housing 1 includes a front shell 13 and a rear shell 14, and the front shell 13 is connected to the rear shell 14 to enclose the accommodating chamber 11. The light transmission hole is arranged on the front shell 13 so that the lens group 22 can collect light from the front shell 13; the lens barrel 21 and the circuit board 5 are mounted on the rear case 14. Wherein the circuit board 5 can be locked to the rear case 14 by screws.

In an embodiment, the front shell 13 is a plastic shell, and the front shell 13 has poor heat conduction effect, so that the heat loss can be reduced, the temperature difference at the lens group 22 is smaller, and the defogging effect is better. Meanwhile, the rear shell 14 is a metal shell, so that heat generated by the circuit board 5 can be quickly dissipated through the rear shell 14, and the working performance of components such as the image sensor 6 on the circuit board 5 can be improved. Specifically, the front case 13 may be made of polyethylene, epoxy resin, or the like, and the rear case 14 may be made of aluminum, aluminum alloy, or the like. It should be understood that in other embodiments, the lens barrel 21 may be fixed on the front shell 13.

As shown in fig. 1 and 2, the camera head 100 further includes a gasket 7, and the gasket 7 is disposed between the front case 13 and the rear case 14 to hermetically connect the front case 13 and the rear case 14.

In one embodiment, the housing 1 is provided with a vent hole, and the vent hole penetrates from the outer surface of the housing 1 to the inner surface of the housing 1 so as to communicate the accommodating cavity 11 with the outside. The camera 100 further comprises a waterproof breathable film, and the waterproof breathable film is arranged on the shell 1 and blocks the vent holes. Can prevent through waterproof ventilated membrane that external steam from getting into and hold chamber 11 to can realize holding the interior outer gas flow of chamber 11, guarantee the inside and outside atmospheric pressure balance of shell 1. In addition, the ventilation holes may be provided on the rear case 14, and the waterproof breathable film may be provided on the inner surface of the outer case 1.

In an embodiment, the camera head 100 further includes a temperature sensor disposed in the accommodating cavity 11 for detecting a temperature in the accommodating cavity 11. Meanwhile, the temperature sensor is connected with the circuit board 5 to realize the connection with a corresponding controller, and when the temperature in the accommodating cavity 11 is higher than a certain value, the controller can control the heating device 3 to stop heating so as to improve the working performance of corresponding components in the accommodating cavity 11; meanwhile, when the temperature in the accommodating cavity 11 is less than a certain value, the controller can control the heating device 3 to start heating, so as to improve the working performance of the corresponding components in the accommodating cavity 11.

As shown in fig. 1 and fig. 2, in an embodiment, the camera head 100 further includes a connector 8, and the connector 8 is connected to the housing 1 and electrically connected to the circuit board 5. The plug connector 8 is used for connecting with an external plug, so as to supply power to the camera 100. The plug 8 may be mounted on the rear case 14.

The embodiment of the utility model provides a still provide a car, this car has used above-mentioned arbitrary embodiment camera 100, can improve camera 100's formation of image effect like this, and then improve the driving experience of car.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A camera is characterized by comprising a shell, a lens and a heating device;

wherein the housing has a receiving cavity;

the lens comprises a lens barrel and a lens group, the lens barrel is arranged in the accommodating cavity, and an object side lens of the lens group is connected with the lens barrel;

the heating device is arranged in the accommodating cavity and connected with the lens barrel so as to transfer heat generated by the heating device to the object side lens through the lens barrel.

2. The camera head according to claim 1, wherein the heating device is fitted around an outer side of the lens barrel.

3. The camera of claim 1, wherein the heating device is press-fit between the housing and the lens barrel.

4. The camera according to claim 1, wherein the lens barrel includes a barrel body and a flange structure that surrounds an outside of the barrel body around an axis of the barrel body, the heating device being placed on an upper surface of the flange structure.

5. The camera according to claim 1, wherein said lens barrel includes a barrel body including a cylinder and a cap,

the cap is connected with the barrel; at least one part of the cover cap is in contact with the object side surface of the object side lens in the axial direction of the cylinder body so as to press the object side lens on the cylinder body;

the heating device is connected with the cap, so that heat generated by the heating device is transferred to the object side lens through the cap.

6. The camera head of claim 1, further comprising a temperature sensor disposed within the receiving cavity for detecting a temperature within the receiving cavity.

7. The camera head according to claim 1, wherein the housing is provided with a vent hole, and the vent hole penetrates from the outer surface of the housing to the inner surface of the housing;

the camera further comprises a waterproof breathable film, and the waterproof breathable film is arranged on the shell and blocks the air holes.

8. The camera head according to claim 1, wherein the housing comprises a front shell and a rear shell, the front shell is connected with the rear shell to enclose the accommodating cavity; the front shell is provided with a light hole so as to facilitate the lighting of the lens group;

the front shell is a plastic shell, and the rear shell is a metal shell.

9. The camera head according to claim 8, further comprising a circuit board disposed in the accommodating chamber and mounted to the rear housing;

the circuit board is located behind the lens cone, and an image sensor is arranged on the circuit board and is opposite to the lens cone.

10. The camera according to claim 1, wherein the heating device comprises a heating body, a conductive wire and a first plug connector, the heating body is connected with the lens barrel, one end of the conductive wire is connected with the heating body, and the other end of the conductive wire is connected with the first plug connector;

the camera still includes the circuit board, be equipped with the second plug on the circuit board and connect, first plug connect with but second plug connects the plug connection.

11. An automobile, characterized in that it comprises a camera according to any one of claims 1 to 10.