In-vehicle monitoring camera

Abstract

The utility model embodiment provides a kind of in-vehicle monitoring camera, comprising: the shell with lens hole being set on one side wall, the PCB of being assembled in the inner chamber of shell and one side plate surface is provided with photosensitive imaging chip, the lens of being worn in lens hole and inner end is opposite photosensitive imaging chip while outer end is exposed to shell outside and infrared light supplementing module, infrared light supplementing module includes infrared light supplementing lamp and corresponding covers in the lens outside of infrared light supplementing lamp, lens is the lens with V-shaped light spot characteristics so that the emergent beam of infrared light supplementing lamp forms two symmetrical distribution in the optical axis of emergent beam after passing through the lens The light spot of two light supplementing spots, the light intensity of two light supplementing spots is respectively deflected by a predetermined angle relative to the optical axis towards opposite direction.The utility model embodiment can make the emergent beam of infrared light supplementing module have good light intensity in driving position and copilot position, can more clearly shoot the image of the two positions, is favorable to improve monitoring effect.

Description

Technical Field

[0001] This utility model relates to the field of vehicle-mounted monitoring camera technology, and in particular to an in-vehicle monitoring camera. Background Technology

[0002] The in-vehicle monitoring camera needs to capture and monitor the driver and passengers, transmitting the images to the corresponding Driver Monitoring System (DMS) and Passenger Monitoring System (OMS). The software then uses algorithms to learn and provide appropriate alerts to the driver and passengers based on the captured images, thereby enabling intelligent driving of the vehicle. To ensure the image quality meets the requirements of the software, the in-vehicle monitoring camera also needs to be equipped with infrared light sources for supplemental lighting to meet all-weather, all-scenario usage needs.

[0003] An existing in-vehicle monitoring camera includes a housing, a PCB board assembled in the inner cavity of the housing with a photosensitive imaging chip on one side, a lens passing through one side wall of the housing with its inner end facing the photosensitive imaging chip and its outer end exposed outside the housing, and an infrared fill light module that emits infrared light towards the outer side of the end face of the housing where the lens is assembled. The infrared fill light module includes multiple sets of fill lights symmetrically arranged about the center of the lens. The optical axis of the emitted beam of each set of fill lights is deflected outward at a predetermined angle relative to the central axis of the lens. The emitted beams of each set of fill lights intersect each other and completely cover the field of view of the lens.

[0004] During implementation, the inventors discovered that in-vehicle monitoring cameras are typically installed at the top center of the windshield with the lens facing directly behind the vehicle. While using such a camera changes the infrared illumination module's illumination range from being relatively concentrated in front of the lens to spreading outwards, thus enhancing the illumination intensity at the corners of the vehicle's interior, the light intensity on the sides of the monitored area is still weaker than in the center. Furthermore, the driver's and front passenger's seats, being the primary targets of monitoring, are close to the in-vehicle monitoring camera and are positioned on opposite sides of the camera's optical axis, making them prone to insufficient illumination and resulting in poor monitoring performance. Utility Model Content

[0005] The technical problem to be solved by this utility model embodiment is to provide an in-vehicle monitoring camera to improve the supplementary lighting in the driver's seat and passenger seat areas.

[0006] To solve the above-mentioned technical problems, the present utility model first provides the following technical solution: an in-vehicle monitoring camera, comprising: a housing with a lens hole on one side wall, a PCB assembled in the inner cavity of the housing and having a photosensitive imaging chip disposed on one side plate, a lens passing through the lens hole on the housing with its inner end facing the photosensitive imaging chip and its outer end exposed outside the housing, and an infrared supplementary light module emitting infrared light toward the outer side of the side wall on which the lens is assembled in the housing. The infrared supplementary light module includes an infrared supplementary light lamp and a lens correspondingly covering the outer side of the infrared supplementary light lamp. The lens is a lens with V-shaped light spot characteristics, so that the emitted light beam of the infrared supplementary light lamp forms two symmetrically distributed supplementary light spots on opposite sides of the optical axis of the emitted light beam after passing through the lens. The strongest illumination areas of the two supplementary light spots are respectively deflected at a predetermined angle in opposite directions relative to the optical axis.

[0007] Furthermore, an infrared fill light module is assembled on each side of the lens hole on the sidewall of the housing.

[0008] Furthermore, the infrared fill light includes a lamp board and an infrared LED chip assembled on the outer side of the lamp board. The other side of the lamp board is provided with conductive pins for corresponding insertion into a pre-set connector on the PCB.

[0009] Furthermore, the predetermined angle is 45-60 degrees.

[0010] Furthermore, the housing includes a front shell and a rear shell that are joined together to form the storage cavity. The PCB is assembled inside the storage cavity. The lens hole is opened on the front shell. The infrared fill light module is assembled on the outer surface of the front shell. The inner wall of the front shell also protrudes towards the rear shell to form a positioning cylinder surrounding the lens hole. The inner end face of the positioning cylinder abuts against the board surface of the PCB and surrounds the photosensitive chip.

[0011] Furthermore, a sealing ring is provided between the inner end face of the positioning cylinder and the surface of the PCB.

[0012] Furthermore, the housing also includes a front cover corresponding to the outer side of the front housing. The front cover has a through hole for the lens to extend out and a light-transmitting hole for the emitted light beam to be emitted. A filter for infrared light to pass through is also assembled in the light-transmitting hole. A light-shielding partition is also formed on the inner wall of the front cover to separate the through hole and the light-transmitting hole to prevent the emitted light beam from shining on the lens.

[0013] Furthermore, a recess is formed on the outer surface of the front shell, the lens hole is opened in the middle of the recess, and the infrared fill light module is assembled in the recess.

[0014] Furthermore, a boss is formed in the middle of the recess, and the outer end opening of the lens hole is located on the outer end face of the boss.

[0015] Furthermore, the lens is assembled within the lens aperture using an active focusing process.

[0016] After adopting the above technical solution, the present utility model embodiment has at least the following beneficial effects: The in-vehicle monitoring camera provided by the present utility model embodiment, by setting a lens with V-shaped light spot characteristics on the outside of the infrared supplement light lamp, makes the emitted light beam of the infrared supplement light lamp form two symmetrically distributed supplement light spots on opposite sides of the optical axis of the emitted light beam after passing through the lens. The strongest illumination areas of the two supplement light spots are deflected at a predetermined angle in opposite directions relative to the optical axis, which just coincides with the positions of the driver's seat and the passenger seat relative to the in-vehicle monitoring camera. Thus, the emitted light beam of the infrared supplement light module can have good illumination intensity in both the driver's seat and the passenger seat, and can capture images of these two positions more clearly, which is beneficial to improving the monitoring effect. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the disassembled state of an optional embodiment of the in-vehicle monitoring camera of this utility model.

[0018] Figure 2 This is a schematic diagram of the combined state of an optional embodiment of the in-vehicle monitoring camera of this utility model.

[0019] Figure 3 This is a cross-sectional structural schematic diagram of an optional embodiment of the in-vehicle monitoring camera of this utility model.

[0020] Figure 4 This is a three-dimensional structural diagram of the lens of an optional embodiment of the in-vehicle monitoring camera of this utility model.

[0021] Figure 5 This is a three-view drawing of the lens of an optional embodiment of the in-vehicle monitoring camera of this utility model.

[0022] Figure 6 This is a schematic diagram of the light radiation characteristics of a lens in an optional embodiment of the in-vehicle monitoring camera of this utility model.

[0023] Figure 7 This is a schematic diagram of the structure of the in-vehicle monitoring camera of this utility model installed inside the vehicle. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present utility model and are not intended to limit the present utility model. Moreover, the embodiments and features in the embodiments of the present application can be combined with each other unless otherwise specified.

[0025] like Figures 1-7 As shown, an optional embodiment of this utility model provides an in-vehicle monitoring camera 8, including: a housing 1 with a lens hole 10 on one side wall; a PCB 3 assembled in a storage cavity 12 of the housing 1 and having a photosensitive imaging chip 30 on one side panel; a lens 5 passing through the lens hole 10 on the housing 1 with its inner end facing the photosensitive imaging chip 30 and its outer end exposed outside the housing 1; and an infrared supplementary light module 7 emitting infrared light towards the outer side of the side wall of the housing 1 where the lens 5 is assembled. The infrared supplementary light module 7 includes an infrared supplementary light lamp 70 and a lens 72 correspondingly covering the outer side of the infrared supplementary light lamp 70. The lens 72 is a lens with V-shaped light spot characteristics, so that the emitted light beam of the infrared supplementary light lamp 70 forms two symmetrically distributed supplementary light spots on opposite sides of the optical axis of the emitted light beam after passing through the lens 72. The strongest illumination areas of the two supplementary light spots are deflected by a predetermined angle in opposite directions relative to the optical axis.

[0026] This embodiment of the invention uses a lens with V-shaped light spot characteristics disposed on the outside of the infrared supplementary light lamp 70. This allows the emitted light beam of the infrared supplementary light lamp 70 to form two symmetrically distributed supplementary light spots on opposite sides of the optical axis of the emitted light beam after passing through the lens 72. The strongest illumination areas of the two supplementary light spots are deflected at predetermined angles in opposite directions relative to the optical axis, which coincides with the positions of the driver's seat and the passenger seat relative to the in-vehicle monitoring camera. As a result, the emitted light beam of the infrared supplementary light module 7 can have good illumination intensity in both the driver's seat and the passenger seat, enabling clearer image capture of these two positions and improving the monitoring effect.

[0027] In one optional embodiment of this utility model, such as Figure 1 and Figure 3 As shown, an infrared fill light module 7 is assembled on each of the opposite sides of the lens hole 10 on the sidewall of the housing 1. In this embodiment, by assembling an infrared fill light module 7 on each of the opposite sides of the lens hole 10, the two infrared fill light modules 7 can complement each other, thereby improving the overall fill light effect and helping the in-vehicle monitoring camera to capture images of the monitored object more clearly.

[0028] In one optional embodiment of this utility model, such as Figure 1 and Figure 3As shown, the infrared supplementary light 70 includes a light board 700 and an infrared LED chip 702 assembled on the outer side of the light board 700. The other side of the light board 700 is provided with conductive pins 704 for corresponding insertion into a pre-set connector 32 on the PCB 3. In this embodiment, by providing conductive pins 704 on the light board 700 to connect the light board 700 and the connector 32 on the PCB 3, the insertion and removal operations are convenient and easy to assemble and disassemble.

[0029] In one optional embodiment of this utility model, the predetermined angle is 45-60 degrees. In specific implementation, such as... Figures 4 to 5 As shown, the lens 5 is roughly shaped like half a peanut shell, with large ends and a narrow middle, and its radiation characteristics are as follows: Figure 6 As shown, the strongest light is found when the light is deflected approximately 50 degrees to the left and right of the optical axis.

[0030] In one optional embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the housing 1 includes a front housing 14 and a rear housing 16 that are joined together to form the storage cavity 12. The PCB 3 is assembled in the storage cavity 12. The lens hole 10 is opened on the front housing 14. The infrared fill light module 7 is assembled on the outer surface of the front housing 14. The inner wall of the front housing 14 also protrudes towards the rear housing 16 to form a positioning cylinder 140 surrounding the lens hole 10. The inner end face of the positioning cylinder 140 abuts against the board surface of the PCB 3 and surrounds the photosensitive chip 30. In this embodiment, the front shell 14 and the rear shell 16 are joined together to form a storage cavity 12, which facilitates the manufacture of the shell 1 and the assembly of the PCB 3 into the storage cavity 12. The positioning cylinder 140 formed on the front shell 14 also abuts against the surface of the PCB 3 and surrounds the photosensitive chip 30, which can more stably assemble the PCB 3 and help ensure the relative positional accuracy of the photosensitive chip 30 on the PCB 3 relative to the lens 5, resulting in good focusing effect and helping to improve image quality.

[0031] In one optional embodiment of this utility model, such as Figure 1 and Figure 3 As shown, a sealing ring 6 is also provided between the inner end face of the positioning cylinder 140 and the board surface of the PCB 3. In this embodiment, by further adding the sealing ring 6, external moisture, dust and other foreign objects can be effectively prevented from entering the area between the positioning cylinder 140 and the photosensitive chip 30, thereby improving the imaging quality.

[0032] In one optional embodiment of this utility model, such as Figure 1 and Figure 3As shown, the housing 1 also includes a front cover 18 corresponding to the outer side of the front housing 14. The front cover 18 has a through hole 180 for the lens 5 to extend out and a light-transmitting hole 182 for the emitted light beam to exit. A filter 184 that allows only infrared light to pass through is also assembled in the light-transmitting hole 182. A light-shielding partition 186 is also formed on the inner wall of the front cover 18 to separate the through hole 180 and the light-transmitting hole 182 to prevent the emitted light beam from shining on the lens 5. In this embodiment, by further adding a front cover 18, the through hole 180 provided thereon can effectively position the lens 5. By providing the light-transmitting hole 182 and assembling the filter 184 in the light-transmitting hole 182, not only can the infrared supplementary light module 7 be effectively protected, but visible light can also be blocked from passing through, which can effectively avoid the formation of a red dot phenomenon, thereby preventing the occupants of the vehicle from having an unpleasant feeling of being monitored. In specific implementation, such as Figure 1 and Figure 3 As shown, a decorative panel 19 can be further assembled on the outer side of the front cover 18 to enhance the overall aesthetic appearance. The decorative panel 19 can be made of PC material, which has good light transmission and good strength.

[0033] In one optional embodiment of this utility model, such as Figure 1 and Figure 3 As shown, a recess 142 is formed on the outer surface of the front housing 14, the lens hole 10 is opened in the middle of the recess 142, and the infrared fill light module 7 is assembled in the recess 142. In this embodiment, by forming a recess 142 on the outer surface of the front housing 14 and assembling the infrared fill light module 7 in the recess 142, it is beneficial to make reasonable use of space and reduce the overall thickness of the in-vehicle monitoring camera.

[0034] In one optional embodiment of this utility model, such as Figure 1 and Figure 3 As shown, a boss 144 is formed in the middle of the recess 142, and the outer end opening of the lens hole 10 is located on the outer end face of the boss 144. In this embodiment, by forming a boss 144 in the recess and opening the lens hole 10 on the outer end face of the boss 144, the boss 144 can provide good protection for the lens 5.

[0035] In one optional embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the lens 5 is assembled within the lens aperture 10 using an active focusing process. This embodiment employs an active focusing process to assemble the lens 5, enabling rapid and accurate determination of its installation position, avoiding secondary focusing, and ensuring the imaging quality of the in-vehicle monitoring camera.

[0036] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many variations under the guidance of the present invention without departing from the inventive spirit and the scope of protection of the claims. These variations are all within the protection scope of the present invention.

Claims

1. An in-vehicle monitoring camera, comprising: The system comprises a housing with a lens aperture on one side wall, a PCB assembled in the housing cavity and having a photosensitive imaging chip on one side panel, a lens passing through the lens aperture in the housing with its inner end facing the photosensitive imaging chip and its outer end exposed outside the housing, and an infrared supplementary lighting module emitting infrared light toward the outer side of the side wall of the housing where the lens is assembled. The infrared supplementary lighting module includes an infrared supplementary light lamp and a lens correspondingly covering the outer side of the infrared supplementary light lamp. The lens is characterized by having V-shaped light spot characteristics, such that the emitted light beam of the infrared supplementary light lamp forms two symmetrically distributed supplementary light spots on opposite sides of the optical axis of the emitted light beam after passing through the lens. The strongest illumination areas of the two supplementary light spots are deflected by a predetermined angle in opposite directions relative to the optical axis.

2. The in-vehicle monitoring camera as described in claim 1, characterized in that, An infrared fill light module is assembled on each side of the lens hole on the sidewall of the housing.

3. The in-vehicle monitoring camera as described in claim 1 or 2, characterized in that, The infrared supplementary light includes a lamp board and an infrared LED chip assembled on the outer side of the lamp board. The other side of the lamp board is provided with conductive pins for corresponding insertion into a pre-set connector on the PCB.

4. The in-vehicle monitoring camera as described in claim 1, characterized in that, The predetermined angle is 45-60 degrees.

5. The in-vehicle monitoring camera as described in claim 1 or 2, characterized in that, The housing includes a front shell and a rear shell that are joined together to form the storage cavity. The PCB is assembled inside the storage cavity. The lens hole is opened on the front shell. The infrared fill light module is assembled on the outer surface of the front shell. The inner wall of the front shell also protrudes towards the rear shell to form a positioning cylinder surrounding the lens hole. The inner end face of the positioning cylinder abuts against the board surface of the PCB and surrounds the photosensitive imaging chip.

6. The in-vehicle monitoring camera as described in claim 5, characterized in that, A sealing ring is also provided between the inner end face of the positioning cylinder and the surface of the PCB.

7. The in-vehicle monitoring camera as described in claim 5, characterized in that, The housing also includes a front cover corresponding to the outer side of the front housing. The front cover has a through hole for the lens to extend out and a light-transmitting hole for the emitted light beam to be emitted. A filter for infrared light to pass through is also assembled in the light-transmitting hole. A light-shielding partition is also formed on the inner wall of the front cover to separate the through hole and the light-transmitting hole to prevent the emitted light beam from shining on the lens.

8. The in-vehicle monitoring camera as described in claim 5, characterized in that, The outer surface of the front shell has a recess, the lens hole is opened in the middle of the recess, and the infrared fill light module is assembled in the recess.

9. The in-vehicle monitoring camera as described in claim 8, characterized in that, A boss is formed in the middle of the recess, and the outer end opening of the lens hole is located on the outer end face of the boss.

10. The in-vehicle monitoring camera as described in claim 1, characterized in that, The lens is assembled within the lens aperture using an active focusing process.

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