JP2003127772A - On-vehicle dead angle image display apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle dead angle image display apparatus capable of securely displaying on a monitor in a cabin a road condition which may be a dead angle to a driver on both left and right sides depending on the intersecting angle at an intersection crossing not only orthogonally but also diagonally. SOLUTION: When an automobile 8 stops at an intersection or passes through, a cross angle detection device 3 detects the cross angle of a crossing road, based on a GPS signal from a GPS signal reception device 6 and a map signal of the present location from a map recorder device 7. Then, an angle adjustment mechanisms 4A, 4B respectively make an angle adjustment so that the CCD cameras 1A, 1B of a camera photographing part 1 can take a photo of the crossing roads according to the output signal of an actuator driver 4C of the angle adjustment device 4. Consequently, the CCD cameras 1A, 1B take a photo of the crossing roads without any dead angle, and the monitor 2 in the cabin which inputs the road condition via a picture bisected controller 5 displays the road condition on the left and right half thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle blind spot image display device, and more particularly to an on-vehicle blind spot image for displaying on a monitor in a passenger compartment a road condition in a blind spot direction from a driver on both left and right sides of an intersection. The present invention relates to a display device.

[0002]

2. Description of the Related Art Recently, in some automobiles, CCD (Ch
arge coupled device) cameras are arranged so that drivers on both the left and right sides of the intersection can check the condition of the road in the blind spot direction on the monitor in the passenger compartment based on the image data received by the pair of left and right CCD cameras. It is equipped with a vehicle blind spot image display device.

As an on-vehicle blind spot image display device of this type, Japanese Unexamined Patent Publication No. 10-229512 discloses a single prism type camera photographing section as shown in FIG.
It has been proposed to arrange a single mirror type camera photographing section as shown in Fig. 1 near the front grill of an automobile to reduce the cost.

Here, the prism type camera photographing section A shown in FIG. 6 has an image forming lens A2 and a prism A3 arranged in front of a single CCD image pickup element A1, and a single CCD image pickup element A1. Is configured to receive the road conditions on the left and right sides of the intersection reflected by the prism A3 via the imaging lens A2. In addition, the mirror type camera photographing unit B shown in FIG. 7 includes an imaging lens B2 and a pair of left and right mirror devices B3 in front of a single CCD image pickup device B1.
B4 is arranged, and a single CCD image sensor B1
Is configured to receive the road conditions on the left and right sides of the intersection reflected by the pair of left and right mirror devices B3 and B4 via the imaging lens B2.

[0005]

By the way, the camera photographing section in the above-mentioned conventional vehicle blind spot image display device is
In both cases, the shooting range is fixed in advance so as to shoot the road conditions on the left and right sides of the intersection that intersects each other in a cross shape or a T shape. Therefore, as shown in FIG. 8, at an intersection that intersects diagonally, the shooting range does not match the road in the blind spot direction from the driver on the left and right sides, and the road situation in the blind spot direction cannot be shot. There is.

Therefore, the present invention is not limited to intersecting intersections that intersect at right angles, but also at intersections that intersect diagonally, it is possible to reliably monitor the condition of the road in the blind spot from the drivers on the left and right sides depending on the intersection angle. An object of the present invention is to provide a vehicle-mounted blind spot image display device capable of displaying an image.

[0007]

As means for solving the above-mentioned problems, a vehicle-mounted blind spot image display device according to the present invention uses a camera photographing unit to capture a road situation in which the driver is on the left and right sides of an intersection in a blind spot direction. It is an on-vehicle blind spot image display device for photographing and displaying it on a monitor in a vehicle interior.
Ioning System) An intersection angle detection device that detects the intersection angle of the intersecting road based on the map data of the current location corresponding to the signal, and the camera photographing unit that can photograph the intersecting road. And an angle adjusting device for adjusting the angle accordingly.

In the vehicle-mounted blind spot image display device according to the present invention, when the vehicle stops or passes at the intersection, the intersection angle detection device detects the intersection angle of the intersecting road based on the map data of the current position according to the GPS signal. To do. Then, the angle adjusting device adjusts the angle according to the output signal of the intersection angle detecting device so that the road crossing the camera photographing unit can be photographed. As a result, the road where the camera photographing unit intersects is photographed without any blind spot, and this is displayed on the vehicle monitor. That is, it is possible to automatically display an image on the monitor according to the intersection angle of the road at the intersection.

In the on-vehicle blind spot image display apparatus according to the present invention, the camera photographing section has a pair of cameras arranged in the left and right directions at the front end of the vehicle, and each camera is angled by the angle adjusting apparatus. If it is configured to be adjusted, even if the angle of the intersecting road is different on the left and right, the driver's left and right sides can reliably display the image of the road situation in the blind spot direction on the monitor in the vehicle interior. preferable.

Further, the camera photographing section has a single camera arranged forward at the front end of the vehicle, and a single prism or a pair of left and right prisms for reflecting incident light from the left and right directions toward the camera. If the prism or each mirror device is configured to be angle-adjusted by the angle adjustment device, the number of cameras constituting the camera imaging unit is one, and the imaging is performed. The image can be displayed on the monitor inside the vehicle as it is without using the screen split controller, so that the cost can be reduced accordingly.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an on-vehicle blind spot image display device according to the present invention will be described below with reference to the drawings. In the drawings to be referred to, FIG. 1 is a system configuration diagram of an in-vehicle blind spot image display device according to a first embodiment of the present invention, and FIG. 2 is an intersection that intersects a vehicle blind spot image display device according to the first embodiment at a substantially right angle. And FIG. 3 is an operation explanatory diagram at an intersecting intersection of the on-vehicle blind spot image display device according to the first embodiment.

The on-vehicle blind spot image display device according to the first embodiment uses the camera photographing unit 1 to show the road situation in which the driver is on the left and right sides with respect to the traveling direction of the vehicle at the intersection.
An on-vehicle blind spot image display device which is photographed by and is displayed on a monitor 2 in a vehicle interior, and an intersection angle detection device 3 which detects an intersection angle of an intersecting road based on map data of a current location according to a GPS signal, An angle adjusting device 4 for adjusting the angle of the camera photographing unit 1 according to the output signal of the intersection angle detecting device 3 is provided so that the intersecting road can be photographed.

The camera photographing unit 1 has a pair of left and right CCD cameras 1A and 1B arranged in the left and right directions near the left and right corners of a front bumper (not shown) at the front end of the automobile. Each CCD camera 1A, 1B has a C
An image pickup lens is combined with a CD image pickup device, and a pair of angle adjusting mechanisms 4A, which constitutes the angle adjusting device 4,
The angle adjustment is performed by actuators (not shown) of 4B.

The monitor 2 includes the CCD cameras 1A, 1
By inputting the image data captured by B via the screen split controller 5, the CCD camera 1 is displayed on the left half of the screen.
The image on the left side in the traveling direction of the vehicle from A is displayed, and the image on the right side in the traveling direction of the vehicle from the CCD camera 1B is displayed on the right half of the screen.

The intersection angle detecting device 3 is a GPS receiving device 6
When the current position is an intersection, the intersection angle of the intersecting road is detected based on the GPS signal from the map signal and the map signal from the map reader device 7 which is a drive device of the map data recording medium. There is.

The angle adjusting device 4 includes the angle adjusting mechanism 4
A and 4B, and an actuator driver 4C that outputs a drive signal to an actuator (not shown). And this actuator driver 4C
Outputs a drive signal to an actuator (not shown) of the angle adjusting mechanisms 4A and 4B in accordance with the intersection angle of the intersection detected by the intersection angle detecting device 3 so that the CCD
The angle of the cameras 1A and 1B is adjusted, and the CCD camera 1
Allows shooting of the road where A and 1B intersect.

In the on-vehicle blind spot image display device of the first embodiment configured as described above, as shown in FIG. 2 or 3, when the automobile 8 stops at an intersection or passes through the intersection, it is shown in FIG. Based on the GPS signal from the GPS receiving device 6 and the map signal from the map reader device 7, the intersection angle detecting device 3 detects the intersection angle of the road intersecting, and the detected signal is the actuator driver 4C of the angle adjusting device 4.
Output to. Then, the actuator driver 4C
In response to a detection signal from the intersection angle detection device 3, a drive signal is output to an actuator (not shown) of the angle adjustment mechanism 4A, 4B, and the direction is adjusted so that the CCD camera 1A, 1B can photograph the road intersecting. .

Here, when the intersection intersects at a substantially right angle as shown in FIG. 2, the CCD cameras 1A and 1B are adjusted to an angle orthogonal to the traveling direction of the automobile 8. As a result, the CCD cameras 1A and 1B reliably capture the conditions of the roads on the left and right sides that are the blind spot direction of the driver, and output the captured data to the screen two-divided controller 5. Then, in response to a control signal from the screen two-divided controller 5, the monitor 2 in the vehicle interior displays an image of the road situation on the left side of the vehicle from the CCD camera 1A in the left half of the screen.
On the right half of the screen, the situation of the road on the right side in the traveling direction from the CCD camera 1B is displayed as an image.

On the other hand, when the intersection is diagonally intersecting as shown in FIG. 3, the CCD camera 1A on the left side is angle-adjusted so as to reliably capture the condition of the road on the left side intersecting at an acute angle, and the CCD camera 1A on the right side. The angle of the CCD camera 1B is adjusted so that the right side road that intersects at an obtuse angle can be reliably photographed. As a result, a pair of left and right CCD cameras 1A, 1B
Reliably captures the situation of the road on both the left and right sides, which is the blind spot direction of the driver, and outputs the captured data to the screen two-division controller 5. Then, the monitor 2 in the vehicle compartment displays the situation of the road on the left side intersecting with the acute angle from the CCD camera 1A on the left half of the screen by the control signal from the screen split controller 5, and the CCD camera on the right half of the screen. The situation of the right crossing road intersecting at an obtuse angle from 1B is displayed as an image.

That is, according to the on-vehicle blind spot image display device of the first embodiment, the vehicle 8 is not limited to the intersecting intersections as shown in FIG. 2 but also at the intersecting intersections as shown in FIG. When stopping or passing at the intersection, the condition of the road in the blind spot is automatically monitored by the drivers on the left and right sides depending on the intersection angle of the intersection.
The image is displayed on. Therefore, the driver of the automobile 8 can surely check the road conditions on the left and right sides of the intersection by the monitor 2 in the vehicle compartment, and can safely drive at the intersection with poor visibility.

Next, a vehicle blind spot image display device according to a second embodiment of the present invention will be described with reference to FIG. In the on-vehicle blind spot image display device according to the second embodiment, as shown in FIG. 4, the camera photographing unit 1 is a single CC arranged forward near the center of the front grill, which is the front end of the automobile.
It has a D camera 1C and a single prism 1D that reflects incident light from the left and right directions toward the CCD camera 1C. Then, the prism 1D is configured to be angle-adjusted in the left-right direction by an actuator (not shown) of the angle adjustment mechanism 4D that constitutes the angle adjustment device 4. Further, the CCD camera 1C is configured to directly output the image data to the monitor 2 without going through the screen halving controller.

In the vehicle blind spot image display device according to the second embodiment, the angle adjusting mechanism 4D of the angle adjusting device 4 is used.
The actuator driver 4C that outputs a drive signal for the actuator to the actuator driver 4C, the intersection angle detection device 3 that outputs a signal of the intersection angle of the intersection to the actuator driver 4C, the GPS receiver 6, the map reader device 7, etc.
The configuration is similar to that of the vehicle-mounted blind spot image display device according to the embodiment, and detailed description thereof will be omitted.

In the on-vehicle blind spot image display device according to the second embodiment, as shown in FIG. 2 or 3, when the automobile 8 stops at an intersection or passes through the intersection, G shown in FIG.
GPS signal from PS receiver 6 and map reader device 7
The intersection angle detection device 3 detects the intersection angle of the road on the basis of the map signal from the above, and outputs the detection signal to the actuator driver 4C of the angle adjustment device 4. Then, the actuator driver 4C outputs a drive signal to an actuator (not shown) of the angle adjusting mechanism 4D according to the detection signal from the intersection angle detection device 3, and can accurately photograph the roads on the left and right sides where the CCD camera 1C intersects. Thus, the angle of the direction of the prism 1D is adjusted.

As a result, the CCD camera 1C reliably captures the condition of the road on the left and right sides in the blind spot direction of the driver by the incident light reflected by the prism 1D, and outputs the captured data to the monitor 2 in the vehicle compartment. To do. And monitor 2
Displays on the left half of the screen an image of the road on the left side in the traveling direction of the vehicle reflected by the prism 1D, and on the right half of the screen, accurately displays the state of the road on the right in the traveling direction reflected by the prism 1D. .

Therefore, also in the vehicle-mounted blind spot image display device of the second embodiment, the same operational effects as those of the vehicle-mounted blind spot image display device of the first embodiment can be obtained. In addition, in the vehicle-mounted blind spot image display device according to the second embodiment, one CCD camera 1C is sufficient as compared with the vehicle-mounted blind spot image display device according to the first embodiment, and the screen bisection controller 5 is unnecessary. Therefore, the cost can be reduced accordingly.

Next, an on-vehicle blind spot image display device according to a third embodiment of the present invention will be described with reference to FIG. In the on-vehicle blind spot image display device according to the third embodiment, as shown in FIG. 5, the camera photographing unit 1 is a single C arranged forward in the vicinity of the center of the front grill, which is the front end of the automobile.
A CD camera 1E and a pair of left and right mirror devices 1 that reflect incident light from the left and right directions toward the CCD camera 1E.
With F, 1G. The pair of left and right mirror devices 1F and 1G constitute the angle adjusting device 4, and the angle adjusting mechanism 4
The actuators E, 4F (not shown) are configured to adjust the angles respectively. Also, the CCD
The camera 1E is configured to directly output the image data to the monitor 2 without going through the screen bisection controller.

In the vehicle blind spot image display device according to the third embodiment, the angle adjusting mechanism 4 of the angle adjusting device 4 is used.
An actuator driver 4C that outputs an actuator drive signal to E and 4F, and this actuator driver 4
Since the intersection angle detecting device 3, the GPS receiving device 6, the map reader device 7, etc. for outputting the signal of the intersection angle of the intersection to C are configured in the same manner as the on-vehicle blind spot image display device of the first embodiment. , Detailed description is omitted.

In the on-vehicle blind spot image display device of the third embodiment, as shown in FIG. 2 or 3, when the automobile 8 stops at an intersection or passes through the intersection, G shown in FIG.
GPS signal from PS receiver 6 and map reader device 7
The intersection angle detection device 3 detects the intersection angle of the road on the basis of the map signal from the above, and outputs the detection signal to the actuator driver 4C of the angle adjustment device 4. Then, the actuator driver 4C outputs a drive signal to an actuator (not shown) of the angle adjusting mechanisms 4E and 4F in response to the detection signal from the intersection angle detecting device 3, and the CC
The angles of the pair of left and right mirror devices 1F and 1G are adjusted so that the right and left roads intersecting with the D camera 1E can be accurately photographed.

As a result, the CCD camera 1E reliably captures the condition of the road on both the left and right sides, which is the blind spot direction of the driver, by the incident light reflected by the pair of left and right mirror devices 1F and 1G, and the captured data is captured by the vehicle. Output to the indoor monitor 2. Then, the monitor 2 displays on the left half of the screen an image of the road condition on the left side in the traveling direction of the vehicle reflected by the left mirror device 1F, and the right half of the screen on the right side in the traveling direction reflected by the right mirror device 1G. The road condition of the road is displayed as an image.

Therefore, also in the vehicle-mounted blind spot image display device of the third embodiment, the same operational effect as that of the vehicle-mounted blind spot image display device of the first embodiment can be obtained. In addition, in the vehicle-mounted blind spot image display device according to the second embodiment, only one CCD camera 1E is required and the screen bisection controller 5 is not required, as compared with the vehicle-mounted blind spot image display device according to the first embodiment. Therefore, the cost can be reduced accordingly.

[0031]

As described above, in the on-vehicle blind spot image display device according to the present invention, when the vehicle stops or passes at the intersection, the intersection angle detection device is based on the map data of the current position according to the GPS signal. The intersection angle of the intersecting roads is detected. Then, the angle adjusting device adjusts the angle according to the output signal of the intersection angle detecting device so that the road crossing the camera photographing unit can be photographed. As a result, the road where the camera photographing unit intersects is photographed without any blind spot, and this is displayed on the vehicle monitor. Therefore, according to the on-vehicle blind spot image display device of the present invention, not only at the intersecting intersections that intersect at right angles but also at diagonally intersecting intersections, the condition of the road in the blind spot direction from the driver on the left and right sides is automatically determined according to the intersecting angle. The image can be displayed on the monitor in the vehicle interior accurately and reliably.

In the on-vehicle blind spot image display device of the present invention, the camera photographing section has a pair of cameras arranged in the left and right direction at the front end of the vehicle, and each camera adjusts the angle by the angle adjusting device. With such a configuration, even when the angle of the intersecting road is different between the left and right sides, the driver can reliably display the image of the road situation in the blind spot direction on the left and right sides. .

Further, in the on-vehicle blind spot image display device of the present invention, a single camera in which the camera photographing section is arranged at the front end portion of the vehicle toward the front, and incident light from the left and right directions toward the camera. If a prism having a single prism or a pair of left and right mirror devices that reflects light is configured to be angle-adjusted by the angle adjusting device, Only one is required, and the captured image can be displayed on the monitor inside the vehicle as it is without using the screen split controller, so that the cost can be reduced accordingly.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a vehicle blind spot image display device according to a first embodiment of the present invention.

FIG. 2 is an operation explanatory view at an intersection that intersects the vehicle blind spot image display device according to the first embodiment at a substantially right angle.

FIG. 3 is an explanatory view of the operation of the vehicle blind spot image display device according to the first embodiment at an intersection that intersects at an angle.

FIG. 4 is a system configuration diagram of an in-vehicle blind spot image display device according to a second embodiment of the present invention.

FIG. 5 is a system configuration diagram of an in-vehicle blind spot image display device according to a third embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a prism type camera photographing unit in a conventional vehicle blind spot image display device.

FIG. 7 is a cross-sectional view showing a mirror type camera photographing unit in a conventional vehicle blind spot image display device.

FIG. 8 is a diagram for explaining the operation at a diagonally intersecting intersection in a conventional vehicle blind spot image display device.

[Explanation of symbols]

1: Camera shooting section 1A: CCD camera 1B: CCD camera 1C: CCD camera 1D: Prism 1E: CCD camera 1F: Mirror device 1G: Mirror device 2: Monitor 3: Crossing angle detector 4: Angle adjustment device 4A: Angle adjustment mechanism 4B: Angle adjustment mechanism 4C: Actuator driver 4D: Angle adjustment mechanism 4E: Angle adjustment mechanism 4F: Angle adjustment mechanism 5: Screen split controller 6: GPS receiver 7: Map reader device 8: Car

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G03B 15/00 G03B 15/00 W 17/17 17/17 G08G 1/16 G08G 1/16 C D H04N 7 / 18 H04N 7/18 JF term (reference) 2H101 FF00 5C054 AA01 CC02 CD03 CE16 CG02 CH01 EA01 EA05 FE11 FE18 HA30 5H180 AA01 CC04 LL04 LL08 LL15

Claims (4)

[Claims] 1. An on-vehicle blind spot image display device for displaying a road situation in a blind spot direction from a driver on both left and right sides of an intersection with a camera photographing section and displaying the image on a monitor in a vehicle compartment.
An intersection angle detecting device for detecting an intersection angle of an intersecting road on the basis of map data of the current location corresponding to the S signal, and a camera photographing section capable of photographing the intersecting road according to an output signal of the intersecting angle detecting device. An on-vehicle blind spot image display device, comprising: an angle adjusting device for adjusting an angle. 2. The camera photographing unit has a pair of cameras arranged in the left-right direction at the front end of the vehicle, and each camera is configured to be angle-adjusted by the angle adjusting device. The on-vehicle blind spot image display device according to claim 1. 3. The camera photographing section has a single camera arranged at the front end of the vehicle toward the front, and a single prism reflecting incident light from the left and right directions toward the camera. The prism is configured to be angle-adjusted by the angle adjusting device.
The in-vehicle blind spot image display device described in [4]. 4. The camera photographing section has a single camera arranged forward at the front end of the vehicle and a pair of left and right mirror devices for reflecting incident light from the left and right directions toward the camera. However, the on-vehicle blind spot image display device according to claim 1, wherein each mirror device is configured to be angle-adjusted by the angle adjustment device.