JPH0692184A - Vehicle rearward checking device - Google Patents

Abstract

PURPOSE:To prevent the incidence of disturbed light into a camera part, and provide an excellent image of the vehicle rear ward with less dead angle or distortion by mounting the camera part which is incorporated by the specified space ahead of the rear end part of a rear spoiler and obtains the image of the part which is diagonally downward at the rear of the vehicle from the rear surface of the rear spoiler. CONSTITUTION:A camera part 12 is incorporated by the specified space ahead of the rear end part 11a of a rear spoiler 11. Thus, the rear end part 11a of the rear spoiler 11 forms the eave and the incidence of the disturbed light into the camera part is prevented. In addition, this camera part 12 is mounted so that the image of the part which is diagonally downward of a vehicle 10 may be obtained from the rear surface of the rear spoiler 11. As a result, a rear obstacle which is close to the vehicle 10 can be photographed and displayed on a display part 13 without using a super wide angle lens.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle rear confirmation device for detecting an obstacle behind a vehicle using a CCD camera or the like.

[0002]

2. Description of the Related Art Conventionally, a vehicle rear confirmation device has been put into practical use for detecting a rear obstacle that cannot be confirmed by a rearview mirror when the vehicle is backed.

The structure of this conventional vehicle rear confirmation device is shown in FIG.
Shown in. A conventional vehicle rear confirmation device includes a CCD camera 101 installed at an arbitrary position on the rear side of the vehicle and an in-vehicle monitor television that displays an image captured by the CCD camera 101. The CCD camera 101 was installed at the rear part of the trunk (position a) or at the rear part of the roof (position b), and the optical axis of the taking lens was adjusted to be horizontal toward the rear.

[0004]

However, the conventional vehicle rear confirmation device has the following problems.

CCD camera 1 at the rear of the trunk (position a)
In the vehicle rear confirmation device in which 01 is installed, firstly, the CCD
Since the distance between the camera 101 and the rear obstacle is short, it is necessary to make the lens a super wide angle, which causes a large distortion in the image. Secondly, since the photographic lens has an ultra wide angle, the photographic magnification becomes large, resulting in insufficient resolution. Third, CCD
Ambient light may be directly incident on the taking lens of the camera 101, and the ambient light may be erroneously recognized as an obstacle. Fourthly, when the CCD camera 101 is installed close to the ground, the shooting lens becomes dirty and has poor visibility due to mud splashes in rainy weather, or the shooting lens is covered with snow and causes poor visibility. The weather resistance was low.

Further, in the vehicle rear confirmation device in which the CCD camera 101 is installed at the rear portion of the roof (position b), firstly, the field of view is blocked by the trunk lit, and a blind spot is generated in the rear portion of the vehicle. Secondly, sunlight rays and ambient light reflected on the vehicle surface such as the rear window glass and the trunk lit may be incident on the photographing lens, and these lights may be erroneously recognized as obstacles. Thirdly, installation of the CCD camera 101 at the rear of the roof may reduce the comfortability of the rear seats.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a vehicle rear confirmation device capable of displaying a video having a high resolution and a small image distortion and a blind spot on a monitor television.

[0008]

In order to solve the above-mentioned problems, the vehicle rear confirmation device of the present invention is incorporated in front of the rear end portion of the rear spoiler by a predetermined distance, and is installed diagonally below the vehicle rear side from the rear surface of the rear spoiler. A camera unit installed so as to capture an image, and a display unit installed near the driver's seat and displaying an image from the camera unit are provided.

[0009]

According to the vehicle rear confirmation device of the present invention, since the camera portion is incorporated in front of the rear end portion of the rear spoiler by a predetermined distance, the rear end portion of the rear spoiler becomes an eaves to the camera portion. The disturbance light is prevented from entering.

Further, since the camera unit is installed so as to capture an image obliquely below the rear of the vehicle from the rear surface of the rear spoiler, the display unit is provided by photographing the rear obstacle near the vehicle without using the super wide-angle lens. Can be displayed on.
This is explained from the conventional example of FIG. 6 and the comparison diagram of the present invention. That is, in the conventional example of FIG.
Since the optical axis of the photographing lens 11 is oriented horizontally, the obstacle 112 cannot be detected unless an ultra wide-angle lens with a viewing angle θ ₂ is used as the photographing lens. On the other hand, in the present invention shown in FIG. 6B, since the optical axis of the taking lens of the CCD camera 113 is directed rearward and obliquely downward, a standard lens (or a wide-angle lens) having a viewing angle θ ₁ is provided for the taking lens. Using obstacles 112
Can be detected.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an external view showing a state in which the vehicle rear confirmation device of this embodiment is mounted on a vehicle. The vehicle rear confirmation device is composed of a CCD camera 12 incorporated in a rear spoiler 11 of a vehicle 10 and a monitor TV 13 installed on an instrument panel near the driver's seat. Since the rear spoiler 11 is fixed to the vehicle by a fixing member such as a pillar, it is possible to shoot an image behind the vehicle from a position higher than the trunk lit 10a. The optical axis 14 of the photographing lens of the CCD camera 12 for performing this photographing is installed downward by an angle θ from the horizontal direction. Therefore, it is possible to detect the obstacle 15 close to the vehicle without using a super-wide-angle lens as the photographing lens.

Next, the principle by which the rear obstacle 15 can be detected is shown in FIG. In the vehicle rear confirmation device of this embodiment, the CCD camera 12 is installed from a position higher than the trunk lit 10a downward from the horizontal direction by an angle θ. Therefore, the obstacle 15 can be photographed at a longer distance than the position a (FIG. 5) of the conventional example. This image is displayed on the monitor television 13 installed in the cockpit, and the driver can prevent the collision with the obstacle 15 by monitoring this image.

The rear end portion 11a of the rear spoiler 11
Since it serves as an eaves, it is possible to prevent sunlight rays from entering the CCD camera 12 and disturbance light from entering the CCD camera 12.

Further, since the CCD camera 12 is incorporated in the rear spoiler 11, it is highly stable at high speeds and aesthetically superior.

Next, an application example of this embodiment is shown in the external view of FIG. This application example is an example in which a unit of the solar battery 22 is attached to the surface of the rear spoiler 23 for supplying power to the CCD camera 21. In the example of FIG.
In order to supply power to the CCD camera 21, it was necessary to extend the cable from the battery in the engine room and connect it. However, in this application example, since electric power is supplied from the solar battery 22, no cable wiring work is required. Therefore, the installation work of the vehicle rear confirmation device becomes very simple. The image captured by the CCD camera 21 is transmitted from the transmitter 24 connected to the CCD camera 21 to the receiver 2 connected to the monitor TV 25 in the driver's seat.
Since it is transmitted by radio waves to 6, the cable between the CCD camera 21 and the monitor TV 25 is unnecessary.

Next, another application example of this embodiment is shown in the plan view of FIG. In this application example, a reflection mirror 34 is provided between the taking lens 32 of the CCD camera 31 and the light receiving section 33. Since the image is inverted by the reflection mirror 34, the image in which the left and right images are inverted is displayed on the monitor TV set in the driver's seat. Since this image is the same as the view seen from the rear-view mirror, the vehicle can be moved backwards in the same manner as the rear-view mirror. Further, such an image in which the left and right images are inverted may be created by image processing without using an optical system.

[0017]

According to the vehicle rear confirmation apparatus of the present invention, the disturbance light is prevented from entering the camera portion, and the rear obstacle near the vehicle can be photographed without using the super wide-angle lens. . Therefore, it is possible to obtain a good image of the rear of the vehicle with little blind spots and distortion.

Further, since the rear end portion of the rear spoiler serves as an eaves, it is possible to prevent ambient light from entering the camera section.

Further, since the rear spoiler incorporating the camera unit is sufficiently separated from the ground, the photographing lens is not contaminated even by mud splashes in rainy weather, and the weather resistance is improved.

Similarly, it is not affected by the reflection of the sun's rays on the vehicle surface such as the rear window glass and the trunk lit.

[Brief description of drawings]

FIG. 1 is an external view showing a state in which a vehicle rear confirmation device of the present invention is mounted on a vehicle.

FIG. 2 is a plan view showing the principle by which a rear obstacle can be detected.

FIG. 3 is an external view showing an application example of the present embodiment.

FIG. 4 is a plan view showing an application example of the present embodiment.

FIG. 5 is a plan view showing a configuration of a conventional vehicle rear confirmation device.

FIG. 6 is a plan view comparing a conventional example with the present invention.

[Explanation of symbols]

10 ... Vehicle, 11 ... Rear spoiler, 12 ... CCD camera, 13 ... Monitor TV, 14 ... Optical axis, 15 ... Obstacle.

Claims (1)

[Claims] 1. A camera unit which is installed in front of a rear end of a rear spoiler by a predetermined distance and is installed so as to capture an image obliquely below and behind the vehicle from the rear surface of the rear spoiler, and is installed near a driver's seat. A vehicle rearward confirmation device comprising: a display unit that displays an image from a camera unit.