JPH1024801A - Side confirmation device to be mounted on vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assure a safety entry into a crossing road from a narrow road. SOLUTION: The captioned device comprises photographing means 1A and 1B installed in the front of the vehicle, distance measuring means 2A and 2B installed at front and side part of the vehicle to measure the facing distance to the side part, a transmission means 3 sending image signals and distance signals obtained in the photographing means and the distance measuring means through a radio circuit, a receiving means 4 receiving the signals sent from the transmission means 3, a vehicle speed detecting means detecting the speed of the vehicle, a control means 6 displaying an image obtained from the image signals obtained from the photographing means 1A and 1B on the predetermined part of the front glass of the vehicle when the vehicle speed is lower than a preset speed and the distance represented by the distance signals received by the receiving means 4 is lower than a preset distance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-vehicle lateral confirmation device, and more particularly to an in-vehicle lateral confirmation device with improved safety when entering a crossroad from a road with poor visibility.

[0002] When approaching an intersection from a narrow road where the line of sight cannot be seen, the traveling state of the vehicles traveling on the intersection is visually observed, the vacant state of the left and right vehicles is checked, and then the vehicle enters appropriately. Must be dangerous.

[0003]

2. Description of the Related Art Conventionally, in such an invasive driving, the vehicle must be advanced to such an extent that the driver can visually recognize the left and right states of the crossing road, and usually the hood portion of the car protrudes into the crossing road. It is a danger.

To solve this problem, a method is conceivable in which a camera is installed at the tip of the vehicle and the state of the vehicle on the crossing road photographed by the camera is displayed on a display in the vehicle interior. Not only does the user need to operate the OFF) switch, but he / she also shifts his / her gaze to the display when he / she must pay the most attention to driving, which is dangerous.

Japanese Patent Application Laid-Open No. 63-13969 discloses that a warning light is projected on a windshield when a distance from a target vehicle measured by a distance sensor becomes smaller than a predetermined warning value for the purpose of preventing a rear-end collision. A configuration for issuing a warning to a driver is disclosed. However, this configuration is intended to prevent a rear-end collision, and is not intended for safety when approaching an intersection road from a narrow road with poor visibility, and is not intended to visually recognize the condition of the intersection road.

[0006]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an on-vehicle lateral confirmation apparatus which can safely enter a narrow road to an intersection.

[0007]

In order to solve the above-mentioned problems, a vehicle side checking device according to the present invention is provided with a photographing means installed at the front of a vehicle and a photographing means installed at a front side of the vehicle. Distance measuring means for measuring the facing distance of the camera, transmitting means for transmitting the image signal and the distance signal obtained by the photographing means and the distance measuring means via a wireless line, and receiving the signal transmitted from the transmitting means. Receiving means, a vehicle speed detecting means for detecting the vehicle speed of the vehicle, and when the vehicle speed is equal to or less than a predetermined speed and the distance indicated by the distance signal received by the receiving means is equal to or less than a predetermined distance. And control means for displaying an image obtained from the image signal obtained by the photographing means on a predetermined portion of a windshield of the vehicle.

Here, the photographing means and the distance measuring means are
The image information of the photographing means, which is installed on the left and right sides in front of the vehicle and whose distance obtained by the distance measuring means is equal to or less than a predetermined distance, is displayed on a display unit on the corresponding side of the windshield. Let it. Further, the predetermined portion of the windshield is a screen film affixed to the inner surface of the windshield, the display on the predetermined portion of the windshield is a projection display, the wireless line is a radio signal,
It can be a transmission line in the form of an optical signal or an ultrasonic signal.

[0009]

1 and 2 are a simplified top plan view and a side view of an in-vehicle apparatus showing an embodiment of a vehicle-mounted side checking apparatus according to the present invention. Vehicle 100
CCDs 1 as image pickup devices are provided on both sides in front of the
A and 1B and distance measuring sensors 2A and 2B are installed, and the obtained image signal and distance signal are transmitted to the transmission unit 3.
In the vehicle 100, a receiving unit 4 is installed,
An image signal, a distance signal, and the like transmitted in the form of a wireless signal, an optical signal, and an ultrasonic signal from the transmission unit 3 are received. The receiving unit 4 performs a receiving process on the received signal, converts the signal into a signal having a predetermined signal form, and sends the signal to the control unit 6. The vehicle speed detection unit 7 detects the traveling speed of the vehicle, and sends a detected vehicle speed signal to the control unit 6.

The CCDs 1A and 1B are installed on both sides in front of the hood of the vehicle, and acquire the conditions of the right front side and the left front side of the vehicle as image signals. The distance measuring sensors 2A and 2B installed on both sides of the vehicle measure the distance between the vehicle and an obstacle existing on the side of the vehicle, for example, a side wall using an ultrasonic wave or the like, and acquire the distance as a distance signal. .

The display unit 5, under the control of the control unit 6, displays image information obtained by the CCD cameras 1A and 1B and displays other arbitrary information to be notified to the driver.

The control unit 6 performs the following control based on the image signal and the distance signal received via the transmission unit 3 and the vehicle speed signal received from the vehicle speed detection unit.

The display of these image information and the like is performed by using a projector as the display unit 5 and, as shown in FIG. This is performed by projecting image information (image) from the display unit 5 that functions as a computer. In order to improve the visibility of display by projecting an image on a predetermined portion of the inner surface of the windshield 10, a light reflective screen film 11 is attached to the projected portion of the windshield 10. As this screen film 11, left and right screen films 11A and 11B are respectively attached to the left and right positions of the driver facing the steering wheel 20, so that image information can be visually recognized by either the left screen film 11A or the right screen film 11B. Can be

The display unit 5 and the windshield 10
The image display using the (left and right screen films 11A and 11B) is not always performed, but may be appropriately controlled based on the vehicle speed obtained from the distance signal and the vehicle speed signal, and the distance between the vehicle and the left and right obstacles. it can. In this control, for example, as shown in FIG. 4, when the vehicle speed is higher than a predetermined constant speed, the operation of the display unit 5 is turned off regardless of the distance between the left and right side walls. This is because it is not necessary to see the screen films 11A and 11B on the windshield 10 during traveling at a certain speed or more, not the above-described approach from the narrow road to the main road.
The display is turned off to prevent accidents during driving.

On the other hand, when the vehicle speed is lower than the fixed speed, it is determined whether or not the distance obtained from the distance measuring sensors 1A and 1B is equal to or less than a predetermined distance. This determination is for determining whether or not the visibility is poor, since the fact that the distance to the side wall is small as shown in FIG. 5 indicates a situation where the visibility is poor. Therefore, by projecting image information from the CCD installed on the side where the distance is equal to or less than the predetermined distance on the corresponding screen film of the windshield 10, it is possible to visually confirm the situation on the side with poor visibility. And safe driving becomes possible.

[0016]

As described above, with the vehicle side checking device of the present invention, the driver can drive while visually confirming poor visibility (right and left), greatly contributing to safe driving. . This display for visual confirmation can also be performed by projecting on a screen film affixed on the inner surface of the windshield, for example, on an easy-to-see portion that does not obstruct the driver's field of view during driving. There is no significant movement of the line of sight, which can contribute to safer driving. Further, signals obtained by the CCD camera and the distance measuring sensor are not transmitted from the transmission unit by wire, but are transmitted by radio signals,
Since the signal can be transmitted to the receiving unit in the driver's cab in the form of an optical signal or an ultrasonic signal, there is no need to perform cable wiring work from the engine room to the interior of the vehicle as in the related art, and installation becomes easy. At this time, if an accelerometer is used as the vehicle speed sensor, it is possible to share the acceleration sensor of the navigation system, which is currently widely used,
It can be installed on all vehicles regardless of the type of vehicle.

[Brief description of the drawings]

FIG. 1 is an apparatus configuration diagram in a vehicle showing an embodiment of an in-vehicle side confirmation apparatus according to the present invention.

FIG. 2 is a side view of a vehicle showing an embodiment of a vehicle-side lateral confirmation device according to the present invention.

FIG. 3 is a diagram illustrating a display configuration unit according to the embodiment of the present invention.

FIG. 4 is a diagram showing conditions of display control by a display unit 6 in the embodiment shown in FIG.

FIG. 5 is a diagram for explaining an operation state in the embodiment shown in FIG. 1;

[Explanation of symbols]

 Reference Signs List 1A, 1B CCD 2A, 2B Distance measuring sensor 3 Transmitting unit 4 Receiving unit 5 Display unit 6 Control unit 7 Vehicle speed detecting unit 10 Windshield 11A, 11B Screen film 20 Handle 100 Vehicle

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location B60R 1/00 B60R 1/00 A G01B 17/00 G01B 17/00 B H04N 7/18 H04N 7 / 18 Z

Claims (5)

[Claims] A photographing means installed in front of the vehicle; a distance measuring means installed in a side part in front of the vehicle to measure a facing distance to the side; an image obtained by the photographing means and the distance measuring means Transmitting means for transmitting a signal and a distance signal via a wireless line; receiving means for receiving a signal transmitted from the transmitting means; vehicle speed detecting means for detecting a vehicle speed of the vehicle; and wherein the vehicle speed is predetermined. An image obtained from an image signal obtained by the photographing means when the distance indicated by the distance signal received by the receiving means is equal to or less than a predetermined distance is equal to or less than a speed, and is transmitted to a predetermined portion of a windshield of the vehicle. And a control means for displaying the information. 2. The photographing means and the distance measuring means are provided on the left and right sides in front of the vehicle, and the photographing means on the side where the distance obtained by the distance measuring means is equal to or less than a predetermined distance. The in-vehicle lateral confirmation device according to claim 1, wherein image information is displayed on a display unit on a corresponding side of the windshield. 3. The on-vehicle side confirmation device according to claim 1, wherein the predetermined portion of the windshield is a screen film stuck on an inner surface of the windshield. 4. A display on a predetermined portion of the windshield,
The in-vehicle lateral confirmation device according to claim 1, which is a projection display. 5. The vehicle side confirmation apparatus according to claim 1, wherein the wireless line is a transmission line in the form of a wireless signal, an optical signal, or an ultrasonic signal.