JPS6216374Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle rear monitoring device for detecting the presence of obstacles such as pedestrians, other vehicles, structures, etc. near the rear of a vehicle and notifying the occupants of the vehicle.

Visibility from the driver's seat is poor at the rear of the car, especially near the rear, making it easy to cause an accident when reversing the car.Furthermore, even when the car is moving forward, the distance between the vehicle and the following vehicle that is close to the rear of the car is poor. Because the driver cannot grip the vehicle accurately, it is easy to cause a collision with a vehicle following, such as when cars are tied together on an uphill slope. Therefore, knowing the existence of obstacles near the rear of the car is
This is an extremely important issue in terms of vehicle safety.

This invention was devised in view of the above problems.
By using a device with the configuration described in the scope of the utility model registration claim, the existence of obstacles at the rear of the vehicle is detected using ultrasonic waves, and when the vehicle is moving forward, the detection results are displayed on the front display device installed near the instrument panel. In addition, when reversing the vehicle, the driver can check the detection results while turning his back to operate the steering wheel.
Detection results are displayed on a rear display device installed in the rear package tray at the rear of the vehicle, allowing the driver to reliably confirm obstacle detection results without having to take an unreasonable position when moving forward or backward. The present invention provides a rear monitoring device for a vehicle.

Hereinafter, the configuration of the present invention will be explained with reference to the drawings.

FIG. 1 shows an example of the vehicle rear monitoring device according to the present invention, in which 1 is an ultrasonic radar device for detecting obstacles placed at the rear of a car, such as a rear bumper, and 2 is an instrument panel in the driver's seat. 3 is a rear display device located in the rear package tray at the rear of the automobile; 4 is the ultrasonic radar device 1;
a control circuit comprising a microprocessor or the like for controlling the obstacle detection operation of the controller to detect obstacles, and displaying the obstacle detection results on the front display device 2 and the rear display device 3 in a predetermined display format; 5 is an ignition switch, 6 is a reverse detection switch that detects when the shift gear of the automobile transmission is in the reverse position, and 7 and 8 are cross lamps that light up when reverse detection switch 6 is turned on. be.

The ultrasonic radar device 1 includes two ultrasonic transmitters 10, an example of which is shown in FIG.
1,102 and two ultrasonic receivers 103,104
The device is located in the rear bumper 9 of a car, facing backwards, and detects the presence of an obstacle depending on the time it takes for the ultrasonic pulse emitted from the transmitter to be reflected by the obstacle and received by the receiver. In the illustrated example, two ultrasonic transmitters 1
01, 102 and two ultrasonic receivers 103, 10
4 is operated alternately by the control circuit 4 at the timings shown in FIGS. 3a to 3d, thereby dividing the obstacle detection range into three detection zones, .

As shown in FIG.
2m), nine obstacle position display lamps 201 to 209 provided corresponding to 2m), a warning lamp 210 to notify that an obstacle has been detected, and a transistor 211 for display switching, and a reverse detection switch. The transistor 211 is turned on when the vehicle is moving forward when the transistor 6 is turned off, and the obstacle detection result is displayed on the front display device 2. The display surface of this front display device 2 has a display format as shown in Fig. 4, and shows the detection zone and its distance (0.5 m in the illustrated example).
For example, a translucent display panel 21 is used to distinguish the position of obstacles depending on the distance (1m, 2m).
2, nine square patterns 214 corresponding to the positions of obstacles are displayed behind the vehicle pattern 213, and the obstacle position display lamps 201 to 209 are placed in each square at the corresponding position. By arranging them on the back side, the obstacle position is illuminated in a pictorial manner. Further, the warning lamp 210 is connected to the warning vehicle pattern 21.
5 and is displayed by lighting.

As shown in FIG. 1, the rear display device 3 includes nine obstacle position display lamps 301 to 309 that light up depending on the position of the obstacle, and a buzzer 31.
0. This rear display device 3
As shown in FIG. 5, is provided in the rear package tray 10 portion with its display surface 311 facing the driver's seat side. The nine obstacle position display lamps 301 to 309 are arranged on a display surface 311 similarly to the front display device 2 described above.
The nine square patterns 312 corresponding to the obstacle positions formed in the figure are arranged on the back side of the corresponding squares. In addition, the obstacle position display lamps 301 to 309 of the rear display device 3 are connected to the reverse detection switch 6, as shown in FIG. Switching is controlled by a detection switch 6.

In the device of the present invention having the above configuration, when an obstacle such as a pedestrian, another vehicle, or a structure approaches behind the vehicle, the ultrasonic radar device 1 detects this. Since the reverse detection switch 6 is OFF, the front display device 2 is in a state where it can be lit and displayed.
The obstacle detection results are displayed on the front display device 2. On the other hand, when the vehicle is in reverse, the reverse detection switch 6 detects that the shift gear is in the reverse position and turns ON.
The display position is switched from the front display device 2 to the rear display device 3, and the obstacle detection results are displayed on the rear display device 3.
As a result, when the vehicle is moving forward, the driver can check the approach of an obstacle using the front display while looking forward, and when reversing the vehicle, the driver can use the rear display while looking back to operate the steering wheel. 3 allows the presence of obstacles to be confirmed and the obstacle detection results to be confirmed easily and reliably.

It should be noted that the warning lamp 210 in the front display device 2 and the buzzer 310 in the rear display device 3 are always turned on or audible regardless of the reverse detection switch 6 for safety.

The device of the present invention has the configuration and operation as explained above, and can reliably detect obstacles that exist close to the rear of the vehicle using the ultrasonic radar device, and when the vehicle is moving forward, the front display device can detect the obstacles. The system is configured to display the detection results on the rear display device when the vehicle is reversing, making it extremely easy for the driver to confirm the obstacle detection results. The display can be easily checked while operating the steering wheel, which is extremely effective in terms of vehicle driving safety.

[Brief explanation of the drawing]

Figure 1 shows one of the rear monitoring devices for vehicles according to the present invention.
A circuit diagram showing an example, FIG. 2 is a configuration example diagram of an ultrasonic radar device, FIGS. 3 a to d are operation time charts of the same radar device, and FIG. FIG. 5 is an example of the display format of the rear display device. 1: Ultrasonic radar device, 2: Front display device, 3: Rear display device, 4: Control circuit, 5: Ignition switch, 6: Reverse detection switch (reverse detection means).

Claims (1)

[Scope of utility model registration request] An ultrasonic radar device for detecting obstacles placed at the required position at the rear of the vehicle, a front display device installed near the instrument panel, and a display screen located at the rear of the passenger compartment such as the rear package tray. A rear display device disposed toward the driver's seat side, a control circuit that controls obstacle detection operations of the ultrasonic radar device and display operations of the front display device and the rear display device, and a control circuit that controls the forward and backward states of the vehicle. and a reverse detection means for identifying obstacles, and displays the obstacle detection result behind the vehicle detected by the ultrasonic radar device on the front display device when the vehicle is moving forward, and on the rear display device when the vehicle is reversing. , A rear monitoring device for a vehicle, characterized in that switching is automatically performed by the reverse detection means.