An electronic device for a vehicle-mounted camera with a drying function

Abstract

An electronic device for a vehicle-mounted camera with a drying function comprises a shell, an electronic component is fixedly installed in the shell, two pins are fixedly connected to the lower surface of the shell, and the positive and negative poles of the electronic component are respectively connected to the pins through wires; a conductive hot-melt sealing film is installed on the upper surface of the inner cavity of the shell, and the conductive hot-melt sealing film is connected to the pins; water absorption holes are opened on the upper surface of the shell, and a desiccant is arranged between the conductive hot-melt sealing film and the capacitor, and the desiccant is fixedly installed in the inner cavity of the shell. The present invention overcomes the shortcomings of the prior art, and by arranging a desiccant in the shell and separating them with a conductive hot-melt sealing film, the electronic component is isolated from the atmosphere by the conductive hot-melt sealing film before power is turned on, and will not have a water absorption effect. When the electronic component is powered on, the conductive hot-melt sealing film melts, and the water absorption holes are connected, so that the drying function can be achieved by the desiccant.

Description

Technical Field

[0001] The invention relates to the technical field of automobile electronics, and in particular to an on-vehicle camera electronic device with a drying function. Background Art

[0002] At present, the production of automotive cameras requires a very high level of clean room to avoid moisture inside the produced cameras, which causes water mist on the lens when it is cold. However, it is inevitable that moisture will enter during the production process. At the same time, because the camera is sealed, the water vapor cannot be removed. And now the automotive camera is a sealed device after production. When the humidity of the production process is not well controlled, some water vapor will enter the camera. When the ambient temperature is low, water vapor will condense on the lens to form fog, which seriously affects the normal operation of the camera. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present invention provides an on-vehicle camera electronic device with a drying function, which overcomes the deficiencies of the prior art and has a reasonable design. A desiccant is arranged in the shell and separated by a conductive hot-melt sealing film. Before the electronic component is powered on, the conductive hot-melt sealing film isolates the desiccant inside the shell from the atmosphere and does not have a water absorption effect. When the electronic component is powered on, the conductive hot-melt sealing film melts and the water absorption holes are connected, so that the drying function can be achieved through the desiccant.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] An electronic device for a vehicle-mounted camera with a drying function comprises a housing, an electronic component is fixedly installed in the housing, two pins are fixedly connected to the lower surface of the housing, and two poles of the electronic component are respectively connected to the two pins through connecting wires;

[0006] A conductive hot-melt sealing film is fixedly installed on the upper surface of the inner cavity of the shell, and the positive and negative electrodes of the conductive hot-melt sealing film are respectively connected to the pins through thin film wires; water absorption holes are opened on the upper surface of the shell, and a desiccant is arranged between the conductive hot-melt sealing film and the electronic components. The desiccant is fixedly installed in the inner cavity of the shell, and the conductive hot-melt sealing film seals and isolates the water absorption holes from the desiccant.

[0007] Preferably, the conductive hot-melt sealing film is sealingly installed on the lower outlet surface of the water absorption hole.

[0008] Preferably, the electronic component is any one of a capacitor, a resistor or an inductor.

[0009] Preferably, a groove is provided on the upper surface of the shell, and the water absorption holes are all arranged in the groove.

[0010] The present invention also discloses a vehicle-mounted camera, which is provided with the above-mentioned vehicle-mounted camera electronic device with a drying function, and the electronic device is installed on a PCB board of the vehicle-mounted camera.

[0011] The present invention provides an electronic device for a vehicle-mounted camera with a drying function. The device has the following beneficial effects: by arranging a desiccant in a housing and separating them with a conductive hot-melt sealing film, before the electronic component is powered on, the conductive hot-melt sealing film isolates the desiccant inside the housing from the atmosphere, and does not have a water absorption effect; and when the electronic component is powered on, the conductive hot-melt sealing film melts, and the water absorption holes are connected, so that the drying function can be achieved through the desiccant. In addition, the electronic component can also achieve its own electrical performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings required for describing the prior art are briefly introduced below.

[0013] Figure 1 A schematic diagram of the structure of the present invention;

[0014] Figure 2 A schematic cross-sectional view of the inner cavity of the housing in the present invention;

[0015] Description of the numbers in the figure:

[0016] 1. Shell; 2. Electronic components; 3. Pins; 4. Connecting wires; 5. Conductive hot-melt sealing film; 6. Thin film wires; 7. Water absorption holes; 8. Desiccant; 9. Grooves. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0018] like Figure 1-2 As shown, an electronic device for a vehicle camera with a drying function comprises a housing 1, an electronic component 2 is fixedly installed in the housing 1, two pins 3 are fixedly connected to the lower surface of the housing 1, and the positive and negative electrodes of the electronic component 2 are respectively connected to the pins 3 through connecting wires 4;

[0019] A conductive hot-melt sealing film 5 is fixedly installed on the upper surface of the inner cavity of the shell 1, and the positive and negative electrodes of the conductive hot-melt sealing film 5 are respectively connected to the pin 3 through a thin film wire 6; a water absorption hole 7 is opened on the upper surface of the shell 1, and a desiccant 8 is arranged between the conductive hot-melt sealing film 5 and the electronic component 2. The desiccant 8 is fixedly installed in the inner cavity of the shell 1, and the conductive hot-melt sealing film 5 seals and isolates the water absorption hole 7 from the desiccant 8.

[0020] Working principle:

[0021] When the camera is produced, the two pins 3 of the device of the present application are first inserted into the PCB board and fixed by soldering; at this time, the camera is not powered on, so the desiccant 8 in the shell 1 is isolated from the air in the camera by the conductive hot-melt sealing film 5, and does not play a role in drying the internal air; when the camera is sealed and starts working, the camera is powered on, and the capacitor 2 is powered on through the pins 3. Since the two pins 3 are respectively connected to the two ends of the conductive hot-melt sealing film 5 through the thin film wires 6, the conductive hot-melt sealing film 5 is powered on. Therefore, when the conductive hot-melt sealing film 5 is powered on, the film will melt. At this time, the inner cavity of the shell 1 can be connected to the air inside the camera through the water absorption holes 7, so that the air inside the camera can be absorbed to the surface of the desiccant 8 through the water absorption holes 7 for adsorption and drying. At the same time, the temperature generated when the camera is working can also accelerate the evaporation rate of water in the camera, thereby accelerating the water absorption performance of the desiccant 8.

[0022] After the conductive hot-melt sealing film 5 melts, the circuit is disconnected, so it is no longer powered, and the film conductor 6 no longer has current. The electronic component 2 body can also achieve the electrical performance of the electronic component itself.

[0023] In this embodiment, the conductive hot-melt sealing film 5 is sealingly installed on the lower outlet surface of the water absorption hole 7. The conductive hot-melt sealing film 5 is used to ensure the sealing effect of the inner cavity of the housing 1 before power is turned on.

[0024] In this embodiment, the electronic component 2 is any one of a capacitor, a resistor or an inductor, and may also be other electronic components with two pins.

[0025] In this embodiment, a groove 9 is formed on the upper surface of the housing 1, and the water absorption holes 7 are all arranged in the groove 9. Therefore, during the production process, a sealing filler can be installed in the groove 9 to further ensure the sealing effect of the inner cavity of the housing 1; after the production is completed and the two pins 3 of the device of the present application are inserted into the PCB board, the sealing filler can be taken out to ensure the subsequent water absorption hole 7 to absorb the air inside the camera.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electronic device for a vehicle-mounted camera with a drying function, characterized in that: It comprises a housing (1), an electronic component (2) is fixedly mounted in the housing (1), two pins (3) are fixedly connected to the lower surface of the housing (1), and two poles of the electronic component (2) are respectively connected to the two pins (3) via connecting wires (4); A conductive hot-melt sealing film (5) is fixedly mounted on the upper surface of the inner cavity of the shell (1), and the positive and negative electrodes of the conductive hot-melt sealing film (5) are respectively connected to the pin (3) via a thin film conductor (6); a water absorption hole (7) is provided on the upper surface of the shell (1), and a desiccant (8) is arranged between the conductive hot-melt sealing film (5) and the electronic component (2); the desiccant (8) is fixedly mounted in the inner cavity of the shell (1), and the conductive hot-melt sealing film (5) seals and isolates the water absorption hole (7) and the desiccant (8); The conductive hot-melt sealing film (5) is sealingly installed on the lower outlet surface of the water absorption hole (7); The upper surface of the housing (1) is provided with a groove (9), and the water absorption holes (7) are all arranged in the groove (9); The electronic component (2) is any one of a capacitor, a resistor or an inductor.

2. A vehicle-mounted camera, characterized in that: The vehicle-mounted camera electronic device with a drying function as claimed in claim 1 is applied, and the electronic device is installed on a PCB board of the vehicle-mounted camera.

Images