On-vehicle camera

Abstract

The embodiment of the present application provides a kind of vehicle camera, including shell, lens that is placed in the shell outside with light entrance surface and is arranged in the shell wall of one end of shell, PCB board assembled in shell and heater electrically connected to PCB board, the heater is placed in the shell outside and is attached to lens, electrode port is provided on heater, corresponding electrode port is provided on PCB board with electrically conductive contact pin that is communicated with circuit on PCB board, the end of electrically conductive contact pin is respectively passed through shell and is correspondingly abutted to electrode port to electrically connect heater to PCB board.The embodiment of the present application is realized by setting electrically conductive contact pin on PCB board and with the end of each electrically conductive contact pin abutting electrode port of corresponding heater to realize the electrically conductive of heater, simple structure, and the hard plug-in mode of free wiring, avoid wire winding phenomenon, reduce wiring difficulty, no exposed wire, improve safety performance, further guarantee the stability of electric connection.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of automobile accessories, in particular to a vehicle-mounted camera. BACKGROUND

[0002] In order to prevent the lens of the vehicle-mounted camera from fogging and affecting the driving safety when the motor vehicle is driven in rainy and foggy weather or in a cold wave environment, a defogging component is usually configured for the vehicle-mounted camera in the industry.

[0003] A common vehicle-mounted camera with a defogging function comprises a shell, a PCB board assembled in the shell, a lens with one end arranged in the shell opposite to the PCB board and the other end extending from the shell, and a heater electrically connected to the PCB board for heating the lens, two wires corresponding to the positive and negative electrodes are led out from the PCB board, the wires are connected to the electrode ports of the heater by wiring outside the shell and conducting the corresponding circuit, the heater is powered to generate heat and transfer heat to the lens to achieve the effect of defogging.

[0004] However, the above-mentioned vehicle-mounted camera with a defogging function is connected to the corresponding circuit by wiring the wires inside and outside the shell, the wiring mode is relatively complex, and the shape and position of the wires are difficult to fix, a plurality of wires arranged adjacent to each other are easy to entangle with each other, which increases the disassembly difficulty, and the exposed wires outside the shell exist a great safety hazard, and it is difficult to ensure the stability of the electrical connection when facing the changing environmental factors. SUMMARY

[0005] The technical problem to be solved by the embodiment of the present application is to provide a vehicle-mounted camera with simple structure and good defogging effect.

[0006] In order to solve the above technical problems, the embodiment of the present application provides the following technical scheme: a vehicle-mounted camera comprises a shell, a lens arranged through a shell wall at one end of the shell and placed outside the shell with a light entrance surface, a PCB board assembled in the shell opposite to the lens, and a heater electrically connected to the PCB board, the heater is arranged outside the shell and is in close contact with the lens, the heater is provided with an electrode port, the PCB board is provided with a conductive contact pin in communication with the circuit on the PCB board corresponding to the electrode port, and the distal end of the conductive contact pin respectively penetrates the shell and corresponds to the electrode port on the heater to electrically connect the heater to the PCB board.

[0007] Further, the heater is an electric heating coil fixed around the outer side wall of the lens near the light entrance surface, and the electric heating coil is provided with the electrode port at the two ends.

[0008] Further, the electrode port is a spherical concave arc surface structure, the end of the conductive contact pin is a spherical convex arc surface structure, and the diameter corresponding to the concave arc surface is greater than the diameter corresponding to the convex arc surface.

[0009] Further, the conductive contact pin is provided with an elastic member capable of elastically deforming in three-dimensional directions relative to the board surface of the PCB.

[0010] Further, the shell is provided with a positioning groove corresponding to each conductive contact pin, the conductive contact pin passes through the positioning groove and is exposed from the shell and abuts in the electrode port, and the conductive contact pin is electrically insulated from the wall of the positioning groove.

[0011] Further, the lens is connected with the shell in a snap-fit manner and is provided with a glue layer between the butt joint end surfaces, and the glue layer is annularly surrounded outside the conductive contact pin.

[0012] Further, the lens is located outside the shell and is annularly convex on the outside of one end to form an outer light guide body which is thicker than the through hole provided on the shell wall for inserting the lens into the shell, the outer end surface of the outer light guide body is convexly spherical to form the light entrance surface, and the electric heating coil is fixed on the end surface of the outer light guide body close to one end of the shell and is electrically insulated from the outer light guide body.

[0013] Further, the outer light guide body is provided with a mounting groove on the end surface close to one side of the shell, and the electric heating coil is press-fitted and pressed into the mounting groove to be embedded and fixed on the outer light guide body.

[0014] Further, the electric heating coil is embedded and fixed in the outer light guide body by injection molding, and the electrode port is exposed from the outer surface of the outer light guide body.

[0015] Further, the shell is provided with a positioning step inside, and the PCB is fixed on the end surface of the positioning step.

[0016] After adopting the above technical solution, the embodiments of the present invention have at least the following beneficial effects: The embodiments of the present invention connect the heater to the circuit on the PCB board by setting conductive pins on the PCB board inside the housing and inserting the end of each conductive pin into the corresponding electrode port on the heater, thereby realizing the on / off control of the heater. The structure is simple, with minimal changes to the internal structure of existing vehicle cameras, making it compatible with most existing camera structures and saving production costs. The rigid plug-in electrical connection method without wiring avoids wire tangling, reduces wiring difficulty, eliminates exposed wires, improves safety performance, and further ensures the stability of the electrical connection. The pins occupy little space and are less likely to interfere with other components inside the housing, further facilitating disassembly and maintenance. The heater is located outside the housing and is in close contact with the lens, improving the heat transfer efficiency between the heater and the lens, resulting in faster defogging, and avoiding excessive heat loss during the heat transfer process due to an excessively long heat transfer path, which is more conducive to energy conservation and environmental protection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the split-state structure of an optional embodiment of the vehicle-mounted camera of the present invention.

[0018] Figure 2 This is a schematic diagram of the overall three-dimensional structure of an optional embodiment of the vehicle-mounted camera of the present invention.

[0019] Figure 3 This is a schematic diagram of the split state structure from another perspective of an optional embodiment of the vehicle-mounted camera of the present invention.

[0020] Figure 4 This is a cross-sectional view along the central axis of the lens through the central axis of any one of the conductive pins, which is an optional embodiment of the vehicle-mounted camera of the present invention.

[0021] Figure 5 This is a cross-sectional view through the central axis of the two conductive pins, representing an optional embodiment of the vehicle-mounted camera of the present invention. Detailed Implementation

[0022] The present application will now be described in further detail 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 invention and are not intended to limit the present invention. Moreover, the embodiments and features in the embodiments of the present application can be combined with each other unless otherwise specified.

[0023] like Figures 1-5As shown, one optional embodiment of the present application provides a vehicle-mounted camera, which comprises a shell 1, a lens 2 penetrating the shell wall at one end of the shell 1 and placed outside the shell 1 with an entrance light surface 21, a PCB board 3 assembled in the shell 1 and arranged opposite to the lens 2, and a heater 4 electrically connected to the PCB board 3, wherein the heater 4 is arranged outside the shell 1 and attached to the lens 2, the heater 4 is provided with an electrode port 41, the PCB board 3 is provided with a conductive contact pin 30 corresponding to the electrode port 41 and in communication with the circuit on the PCB board 3, and the ends of the conductive contact pin 30 penetrate the shell 1 and abut against the electrode port 41 on the heater 4 to electrically connect the heater 4 to the circuit on the PCB board 3.

[0024] In the present application, the conductive contact pin 30 is arranged on the PCB board 3 inside the shell, and the end of each conductive contact pin 30 abuts into the electrode port 41 arranged on the heater 4 to electrically connect the heater 4 to the circuit on the PCB board 3, thereby achieving on-off control of the heater 4, which is simple in structure, has small changes in the internal structure of the existing vehicle-mounted camera, is convenient for compatibility with most existing camera structures, saves production cost, avoids wire winding, reduces wiring difficulty, has no exposed wires, improves safety performance, and further ensures the stability of electrical connection; the heater 4 is arranged outside the shell 1 and attached to the lens 2, which improves the heat transfer efficiency between the heater 4 and the lens 2, makes the defogging effect more rapid, avoids excessive heat loss of the heater 4 in the heat transfer process, and is more conducive to energy saving and environmental protection.

[0025] In another optional embodiment of the present application, as shown in Figures 1-5 The heater 4 is an electric heating coil fixed around the outer side wall of the lens 2 near the entrance light surface 21, and the electric heating coil 4 is provided with the electrode port 41 at both ends. In this embodiment, the electric heating coil 4 is fixed around the outer side wall of the lens 2 near the entrance light surface 21 to heat the lens 2, the lens 2 is uniformly heated in the circumferential direction, the defogging effect on the entrance light surface 21 is better, the electric heating coil 4 is convenient for shaping to adapt to the contour shape of the lens 2, and the compatibility is good.

[0026] In another optional embodiment of the present application, as shown in Figure 5As shown, the electrode port 41 is a spherical concave arc surface 410 structure, the end of the conductive contact pin 30 is a convex arc surface 301 structure, and the diameter of the concave arc surface 410 is greater than that of the convex arc surface 301. In this embodiment, the inner surface of the electrode port 41 is a spherical concave arc surface 410 structure, and the end of the conductive contact pin 30 is a spherical convex arc surface 301 structure, and the diameter of the concave arc surface 410 is greater than that of the convex arc surface 301. This facilitates the abutting insertion of the end of the conductive contact pin 30 into the electrode port 40, increases the allowable position deviation range of the conductive contact pin 30, and ensures the stability of the electrical connection between the contact pin 30 and the electric heating coil 4.

[0027] In another optional embodiment of the present application, as shown in Figure 1 、 Figure 3 and Figure 5 , the bottom of the conductive contact pin 30 is provided with an elastic member 32 that can elastically deform in three-dimensional directions relative to the surface of the PCB 3. In this embodiment, the elastic member 32 is arranged at the bottom of the conductive contact pin 30. During the plugging process of the conductive contact pin 30 and the electrode port 41, the elastic member 32 can guide the conductive contact pin 30 to move in three-dimensional directions relative to the surface of the PCB 3 within the elastic deformation range of the elastic member 32 to adapt to the slightly different electrode ports 41 on different lenses 2. In actual application, the focal lengths of the lenses 2 are various, and the elastic deformation of the elastic member 32 in the axial direction of the contact pin 30 can drive the contact pin 30 to float up and down to match the lenses 2 with different focal lengths.

[0028] In another optional embodiment of the present application, as shown in Figure 1 and Figure 5 , the housing 1 is provided with a positioning groove 10 corresponding to each conductive contact pin 30. The conductive contact pin 30 passes through the positioning groove 10 and is exposed from the housing 1 and abuts in the electrode port 41. The conductive contact pin 30 is electrically insulated from the groove wall of the positioning groove 10. In this embodiment, the positioning groove 10 is arranged in the housing 1 to facilitate the positioning and installation of the conductive contact pin 30. The conductive contact pin 30 passes through the positioning groove 10 and extends to the outside of the housing 1 and abuts in the electrode port 41 of the electric heating coil 4, thereby ensuring that the electric heating coil 4 is connected to the corresponding circuit of the PCB 3. At the same time, the conductive contact pin 30 needs to be electrically insulated from the groove wall of the positioning groove 10 to avoid electric leakage. In the specific implementation process, the housing 1 or the groove wall of the positioning groove 10 can be made of insulating materials (such as plastic, rubber, glass, etc.) and sprayed with an insulating layer (such as insulating paint, insulating glue, etc.), or the outer wall of the conductive contact pin 30 can be sprayed with an insulating layer (such as insulating paint, insulating glue, etc.).

[0029] In another optional embodiment of the present application, as shown inFigures 4-5 As shown, the lens 2 is connected with the shell 1 by snap-fit, and a glue layer 5 is arranged between the lens 2 and the shell 1, and the glue layer 5 is annularly arranged outside the conductive contact pin 30. In this embodiment, the glue layer 5 is arranged between the lens 2 and the shell 1, so that the lens 2 and the shell 1 are fixedly connected, and the thickness of the glue layer 5 can be designed to focus the vehicle-mounted camera, so that the photosensitive element on the PCB 3 is located at the focal point of the lens 2, the shooting quality is ensured, and the glue layer 5 is annularly arranged outside the conductive contact pin 30, so that the conductive contact pin 30 is sealed, and the conductive performance of the conductive contact pin 30 is not damaged due to water and dust.

[0030] In another optional embodiment of the present application, as shown in Figures 3-5 As shown, the lens 2 is located outside the shell 1, and an outer light guide body 23 is annularly protruded outward at one end of the lens 2, so that the outer light guide body 23 is thicker than the through hole 14 of the shell wall for inserting the lens 2 into the shell 1, and the outer end surface of the outer light guide body 23 is spherically outward protruded to form the light entrance surface 21, and the electric heating coil 4 is fixed on the end surface of the outer light guide body 23 close to one end of the shell 1 and is electrically insulated from the outer light guide body 23. In this embodiment, the outer light guide body 23 is annularly protruded outward at one end of the lens 2, so that the outer light guide body 23 is thicker than the through hole 14 of the shell wall for inserting the lens 2 into the shell 1, and the outer end surface of the outer light guide body 23 is spherically outward protruded to form the light entrance surface 21, so that the electric heating coil 4 is fixed on the end surface of the outer light guide body 23 close to one end of the shell 1, so that the heat source is close enough to the light entrance surface 21, and the defogging effect is ensured, and the electric heating coil 4 is electrically insulated from the outer light guide body 23, so that the electric heating coil 4 is not electrified to the outer light guide body 23 after electrification, and the safety hazard is avoided. In the specific implementation process, the outer light guide body 23 can be made of insulating materials (such as plastic, rubber, glass, etc.), or an insulating layer (such as insulating paint, insulating glue, etc.) is coated on the outer surface of the end surface of the outer light guide body 23 for fixing the electric heating coil 4.

[0031] In another optional embodiment of the present application, as shown in Figures 3-5 As shown, the end surface of the outer light guide body 23 close to one side of the shell 1 is provided with a mounting groove 25, and the electric heating coil 4 is press-fitted and embedded into the mounting groove 25 to be fixed on the outer light guide body 23. In this embodiment, the electric heating coil 4 is press-fitted into the mounting groove 25 provided on the end surface of the outer light guide body 23 close to one side of the shell 1 by interference fit, so that the assembly is relatively simple, the electric heating coil 4 is closely attached to the lens 2, the heat transfer effect is good, and the electric heating coil 4 is not exposed to the external environment in the use state of the vehicle-mounted camera, and the safety is good.

[0032] In another optional embodiment of the present application, as shown in Figure 3As shown, the electric heating coil 4 is embedded and fixed in the outer light guide 23 by injection molding, and the electrode port 41 is exposed from the outer surface of the outer light guide 23. In this embodiment, the electric heating coil 4 and the outer light guide 23 are integrally injection molded by embedding and injection molding, the main body of the electric heating coil 4 is completely wrapped inside the outer light guide 23, the assembly is firm and not easy to fall off, and the electrode port 41 is exposed from the outer surface of the outer light guide 23, which ensures that the electric heating coil 4 can be connected to the corresponding circuit on the PCB 3.

[0033] In another optional embodiment of the present application, as shown in Figure 3 and Figure 4 As shown, the housing 1 is internally provided with a positioning step 12, and the PCB 3 is fixedly attached to the end face of the positioning step 12. In this embodiment, the positioning step 12 is arranged inside the housing 1 to facilitate the attachment of the PCB 3 and improve the precision of assembling the PCB 3.

[0034] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above specific embodiments, which are only illustrative and not restrictive. Those skilled in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, which are all within the protection scope of the present application.

Claims

1. A vehicle-mounted camera, comprising a housing, a lens disposed on a housing wall of one end of the housing and placed outside the housing with an entrance surface, a PCB board assembled in the housing and arranged opposite to the lens, and a heater electrically connected to the PCB board, characterized in that, The heater is arranged outside the shell and is attached to the lens, the heater is provided with electrode ports, the PCB is provided with conductive contact pins corresponding to the electrode ports and connected to the circuit on the PCB, the ends of the conductive contact pins respectively pass through the shell and abut the electrode ports on the heater to electrically connect the heater to the PCB; the heater is an electric heating coil fixed around the outer wall of the lens near the light entrance surface, the electric heating coil is provided with the electrode ports at the two ends; the lens is outwardly protruded in a ring shape at one end of the outer side of the shell to form an outer light guide body which is thicker than the through hole of the shell wall for inserting the lens into the shell, the outer end surface of the outer light guide body is outwardly protruded in a spherical shape to form the light entrance surface, and the electric heating coil is fixed on the end surface of the outer light guide body near one end of the shell and is electrically insulated from the outer light guide body.

2. The vehicle camera of claim 1, wherein, The electrode ports are provided with a spherical concave arc surface structure, the ends of the conductive contact pins are provided with a spherical convex arc surface structure, and the diameter corresponding to the concave arc surface is greater than the diameter corresponding to the convex arc surface.

3. The vehicle camera of claim 2, wherein, The bottom of the conductive contact pin is provided with an elastic member capable of elastically deforming in three-dimensional direction relative to the surface of the PCB.

4. The vehicle camera of claim 2, wherein, The shell is provided with a positioning groove corresponding to each conductive contact pin, the conductive contact pin passes through the positioning groove and is exposed from the shell and abuts in the electrode port, and the conductive contact pin is electrically insulated from the wall of the positioning groove.

5. The vehicle camera of claim 4, wherein, The lens is connected with the shell in a snap-fit manner and is provided with a glue layer between the abutting end surfaces, the glue layer is annularly arranged outside the conductive contact pin.

6. The vehicle camera of claim 1, wherein, An installation groove is formed on the end surface of the outer light guide body near one side of the shell, the electric heating coil is press-fitted and pressed into the installation groove to be embedded and fixed on the outer light guide body.

7. The vehicle camera of claim 6, wherein, The electric heating coil is embedded and fixed in the outer light guide body by injection molding, and the electrode ports are exposed from the outer surface of the outer light guide body.

8. The vehicle camera of claim 1, wherein, The shell is provided with a positioning step inside, and the PCB is fixed on the end surface of the positioning step.

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