KR200374153Y1 - Rear view camera for vehicle - Google Patents

Abstract

The present invention relates to a rear surveillance camera for a vehicle that enables to monitor the rear smoothly and clearly without obstacles to the surrounding environment during the driving and parking of the vehicle,

The present invention is a signal input unit for inputting a drive signal to the camera; An image unit for photographing a subject by a signal input from the signal input unit; An acoustic unit configured to detect sound of the surrounding environment and output the detected sound; A temperature unit which senses an ambient temperature of the vehicle and outputs a driving signal according to the sensed temperature; A control unit which controls a signal detected and input in the vicinity of the vehicle by a preset program and outputs a controlled signal; A monitor configured to display a sound and an image while driving by a control signal output from the controller; It consists of an illuminance unit that detects the ambient illuminance of the vehicle and illuminates the infrared lamp brightly and darkly with a control signal according to the detected bright and dark illuminance to illuminate the rear, so that rear monitoring can be performed smoothly without being disturbed by the surrounding environment. Will be.

Description

REAR VIEW CAMERA FOR VEHICLE}

The present invention relates to a rear surveillance camera for a vehicle, and more particularly, to a rear rear surveillance camera for smoothly and clearly monitoring the rear without being disturbed by the surrounding environment for the driving and parking of the vehicle.

In general, a rear surveillance camera for a vehicle is installed at the rear of the vehicle to photograph the rear of the vehicle when the vehicle reverses, and the captured signal is reproduced through a monitor located in the driver's seat so that the driver can reverse and park while watching the monitor. The rearview mirror or rearview mirror makes it easy to reverse without having to monitor the rear.

As described above, according to the Applicant's Utility Model No. 20-274671, the rear surveillance camera that conveniently monitors the rear of the vehicle includes a camera that photographs a subject in the rear of the vehicle, and a shutter that is combined with the camera to protect the lens and block foreign substances. By separating and configuring the shutter driving means for driving the camera or the shutter driving means, if any one of the failure occurs to replace and repair the corresponding failure portion.

In addition, according to Utility Model Registration No. 20-239199, a camera for photographing a subject in a vehicle comprises an illuminance sensing unit for detecting illuminance of an optoelectronic device, and an infrared ray that generates infrared light, so as to brighten and darken the rear environment. It is detected by the illuminance detection unit, and according to the detected illuminance, the infrared eloid is simply turned on / off to illuminate the surrounding environment to photograph the subject.

According to the Utility Model Registration No. 20-328374, a camera for photographing a subject in the rear of a vehicle, a temperature sensing unit using a temperature sensor for sensing an internal temperature, and a heater driving unit are provided in the camera, so that the camera has a low temperature. There was something to make it work normally.

As such, the conventional rear surveillance cameras are designed to simply solve any one of the problems such as dust, foreign matter, bright and dark, and weather caused by changes in the natural environment of the vehicle. Or in winter, there is a problem that can not actively cope with the overall dust or foreign substances, bright and dark changes, changes in temperature due to frequent changes in the natural environment.

In particular, the rear surveillance cameras responded to changes in the natural environment of the surroundings, not just in response to changes in the environment, and in response to changes in the environment, but only in light and darkness, and above / below any set temperature. The problem is that the rear monitoring effect cannot be improved because the rear monitoring is not performed while smoothly responding to the change as desired.

Therefore, an object of the present invention is to improve the rear surveillance effect by making a smooth and clear shooting operation for the change of the surrounding natural environment when the vehicle reverses.

Another object of the present invention is to provide a surveillance effect in which the rear lamp is optimally illuminated by illuminating the infrared lamp brightly or dimly according to the darkness or light of the surrounding environment when the vehicle is reversed.

According to an aspect of the present invention, there is provided a rear surveillance camera for a vehicle photographing a subject on a rear side of a vehicle, comprising: a signal input unit configured to input a driving signal to the camera; An image unit for photographing a subject by a signal input from the signal input unit; An acoustic unit configured to detect sound of the surrounding environment and output the detected sound; A temperature unit which senses an ambient temperature of the vehicle and outputs a driving signal according to the sensed temperature; A control unit which controls a signal detected and input in the vicinity of the vehicle by a preset program and outputs a controlled signal; A monitor configured to display a sound and an image while driving by a control signal output from the controller; It is characterized by consisting of an illumination unit for detecting the ambient illuminance of the vehicle and illuminates the rear of the infrared lamp according to the detected bright and dark illuminance to illuminate the rear.

Thus according to the present invention. In order to drive and park the vehicle, it detects the surrounding environment (illumination and temperature) of the vehicle when it is reversing and outputs it brightly and darkly to the camera or infrared lamp according to the detected state, so as to illuminate the rear with smooth camera driving and proper lighting. The rear surveillance and clear rear surveillance can be performed smoothly without being disturbed by the surrounding environment.

1 is a front view of a rear surveillance camera for a vehicle to which the present invention is applied;

2 is an overall block diagram of a rear view surveillance camera for a vehicle of the present invention.

3 is a circuit diagram of the temperature portion of the rear surveillance camera for a vehicle of the present invention.

4 is a circuit diagram of the illuminance unit of the rear surveillance camera for a vehicle of the present invention

* Explanation of symbols for the main parts of the drawings *

110; Camera 120; Fixture

130; Shutter 140; Shutter Drive

210; A signal input unit 220; Imaging Department

230; An acoustic unit 240; Temperature

250; A controller 260; Monitor

270; Illuminance

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a rear surveillance camera for a vehicle to which the present invention is applied, and a camera 110 for photographing a subject in a rear of a vehicle; A fixture 120 for fixing the camera 110 to the rear of the vehicle; A shutter 130 coupled to the camera 110 to prevent lens protection and foreign matter; The shutter 130 is composed of a camera unit 100 composed of a shutter driver 140 for rotationally driving.

2 is an overall block diagram of a rear surveillance camera for a vehicle of the present invention, FIG. 3 is a circuit diagram of a temperature unit of the rear surveillance camera for a vehicle of the present invention, and FIG. 4 is a circuit diagram of an illuminance unit of the rear surveillance camera for a vehicle of the present invention. A signal input unit 210 for inputting; An image unit 220 for photographing a subject in the rear by a signal input to the signal input unit 210; An acoustic unit 230 for sensing and amplifying and outputting the ambient sound of the vehicle; A temperature unit 240 for sensing an ambient temperature of the vehicle and outputting a control signal corresponding to the detected temperature; A controller 250 for controlling each signal sensed and input in the vicinity of the vehicle by a preset program and outputting a controlled signal; A monitor unit 260 for displaying a sound and an image while driving by a control signal output from the controller 250; The ambient light of the vehicle is detected and the illumination unit 270 illuminates the rear of the infrared lamp according to the detected light and dark illuminance to illuminate the rear.

The signal input unit 210 inputs a reverse gear of the vehicle or a preset camera driving signal.

The imaging unit 220 includes a CCD camera 110 for photographing a subject, a signal processor 221 for controlling and processing an image signal photographed by the CCD camera 110 by a preset program, and the signal processor 221. ) Is configured as a synchronization signal unit 222 that synchronizes the signal processed in the image.

The sound unit 230 is composed of a microphone (MIC) for detecting the ambient sound of the vehicle, and the sound amplifier 231 for amplifying the sound detected by the microphone (MIC).

The temperature unit 240 is a temperature sensor 241 for detecting an ambient temperature and an integrated circuit device IC40 for outputting a control signal corresponding to the temperature detected by the temperature sensor TH. ), A diode (D40), a resistor (R41-R45), a capacitor (C41-C42), a constant voltage device (REG), a transistor (Q41-Q42) to drive the control signal from the temperature control unit 241 on / off The temperature driving unit 242 is configured as.

The controller 250 may be configured as a microprocessor which is a non-memory that performs arithmetic control of the input data signal with a preset data signal and outputs the controlled signal.

The monitor 260 is configured as an LCD for displaying the video signal captured by the camera 110 by the controller 250.

The illuminance unit 270 may include a photoconductive cell CDS for detecting illuminance around the vehicle, and an integrated circuit device for outputting a control signal corresponding to the optical signal detected from the photoconductive cell CDS; An illuminance control unit 271 that is an IC 70; A diode D70, a resistor R71-R78, a capacitor C71-C73, a constant voltage element REG, and a transistor Q71-Q73 that receive the control signal from the illuminance control unit 271 and are driven on / off. A jaws tool 272; A pulse width modulator (273) for modulating a width on a drive signal output from the jaw tool 272; The infrared lamp unit 274 for on / off driving the infrared lamps IR71 to IR76 connected in series and parallel by a long and short driving voltage outputted after being modulated by the control unit 272 is configured.

The present invention configured as described above is fixed to the camera 110 provided with the shatter 130 and the shutter driver 140 by using the fixing unit 120 in a position where the rear monitoring of the vehicle is easy.

Subsequently, the camera 110 is connected to a monitor to be installed near the driver's seat by using a cable (not shown) to complete the installation of the rear view camera.

As described above, when the driver puts a reversing gear in the vehicle or inputs power to a monitor installed in the driver's seat in order to drive the vehicle or park after the driving, the driver sets the rear gear and the monitor. The power input signal is input to the controller 250 through the signal input unit 210.

The controller 250 drives the camera 110 by using a preset program to input an input signal to an image signal photographed through the signal processor 221 and the synchronization signal unit 222 of the image unit 220. In accordance with the synchronization according to the display unit 260 to display an image.

When the rear image signal is photographed and displayed as described above, the controller 250 inputs a noise or a sound to the surrounding environment of the rear through the microphone MIC of the sound unit 230, and the input sound signal is amplified. Amplified through the unit 231 is input to the control unit 250, the control unit 250 monitors the rear end while recognizing the sound by outputting the input sound through the monitor unit 260.

Meanwhile, the temperature unit 240 detects the ambient temperature of the vehicle through the temperature sensor TH and inputs it to the temperature controller 241, and the temperature controller 241 controls the preset temperature corresponding to the input temperature. A signal is output, and the control signal output from the signal is applied to the base of the transistor Q42 of the temperature driver 242.

Accordingly, the transistor Q42 drives the camera 110 while driving on / off by the output value set by the temperature control unit 241, so that the camera can be smoothly driven even in a low temperature winter season.

On the other hand, during the rear monitoring, the illuminance unit 270 detects the light and darkness (illuminance) of the underground parking lot and the shaded area according to the daytime, nighttime, cloudy day or place of the surrounding environment through the photoconductive cell (CDS). The sensed illuminance is controlled by the illuminance signal preset for rear monitoring through the illuminance control unit 271 and is output.

That is, the illuminance signal output from the illuminance control unit 271 turns on the transistor Q71 and the transistor Q72 of the illuminance control unit 272, and the on driving of the transistor Q71 and the transistor Q72 is performed by the transistor ( Q73 is turned on so that the driving voltage VDD is applied to the infrared lamps IR71-IR76 through the transistor Q73 to turn on the infrared lamps IR71-IR76.

At this time, the lighting of the infrared lamps IR71-IR76 is driven by the pulse width modulator 273, that is, the driving voltage VDD according to the short on-driving signal of the transistor Q73 shortly modulated when the surrounding environment is bright. When the infrared light (IR71-IR76) by applying a short light on the controlled light is irradiated, while the ambient environment is dark, the long modulated on-drive signal is applied to the transistor (Q73) infrared lamp (IR71-IR76) By irradiating the adjusted light with long lighting), it is possible to take a clear back shot with the appropriate illumination control even in the bright and dark places of the surrounding environment.

As described above, the present invention monitors by photographing the rear side of the camera when the vehicle is driven and parked in reverse, and in the case of dark or cold weather such as winter season, the illumination and temperature are sensed to detect the temperature. By lighting the camera and the lamp according to the corresponding control signal, smooth and clear rear surveillance can be performed by appropriate camera driving and illuminance, thereby improving rear surveillance effect as well as ensuring safe driving.

Claims (2)

A rear surveillance camera for a vehicle for photographing a subject at the rear of the vehicle, comprising: a signal input unit configured to input a driving signal to the camera; An image unit for photographing a subject by a signal input from the signal input unit; An acoustic unit configured to detect sound of the surrounding environment and output the detected sound; A temperature unit which senses an ambient temperature of the vehicle and outputs a driving signal according to the sensed temperature; A control unit which controls a signal detected and input in the vicinity of the vehicle by a preset program and outputs a controlled signal; A monitor configured to display a sound and an image while driving by a control signal output from the controller; And an illuminance unit for detecting the ambient illuminance of the vehicle and illuminating the infrared lamp with a control signal according to the detected illuminance to illuminate the rear. According to claim 1, wherein the illumination unit is a photoconductive cell for detecting the illumination of the surroundings of the vehicle, and an illumination control unit for outputting a control signal corresponding to the optical signal detected from the photoconductive cell; A control tool driving unit comprising a diode, a resistor, a capacitor, a constant voltage device, and a transistor for driving on / off by receiving a control signal from the illuminance control unit; A pulse width modulator for modulating a width on a drive signal output from the jaw tool driver; And an infrared lamp unit for driving on / off the infrared lamps connected in series and in parallel by a drive signal output from the jaw tool moving unit.