JP3503466B2 - Display device for vehicles - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for a vehicle, which captures an image of the surroundings of a vehicle and displays the captured ambient image on a display installed at a position where a driver can easily see the image.

[0002]

2. Description of the Related Art As a conventional display device for a vehicle, for example, an image pickup device capable of photographing surrounding images on both left and right sides is attached to a front end portion of the vehicle and is installed at a position where a driver in a vehicle can easily see it. There is a display that displays a surrounding image by a manual operation using a changeover switch on a display on which a navigation image output from the device is displayed. When the driver stops at an intersection with poor visibility, the driver operates the changeover switch to display the surrounding image on the display. The left half of the display shows a monitor image of the left side, and the right half of the display shows a monitor image of the right side.

However, in the case where the surrounding image and other images are manually switched as in the above-mentioned conventional example, when the display of the surrounding image becomes unnecessary after passing through the intersection, the changeover switch is manually operated again. It is necessary to switch to another image, and it is troublesome to operate the changeover switch when increasing the vehicle speed after passing through the intersection.

Therefore, in order to reduce the inconvenience caused by the manual operation, a display device has been developed which automatically switches between another image and the surrounding image depending on the vehicle speed detected by the vehicle speed sensor.
In this device, as shown in FIG. 17, when the vehicle speed decreases below a predetermined speed Vd while traveling from a point s through intersections A, B, C and D, an image automatically displayed on the display is displayed. The navigation image output from the navigation device (displayed as Navi in the figure) is switched to the surrounding image captured by the imaging device (displayed as Surrounding in the diagram). Therefore, with this device, when the vehicle speed approaches the intersection and the vehicle speed decreases,
The navigation image is automatically switched to the surrounding image,
When the vehicle speed increases after passing through the intersection, the surrounding image is automatically switched to the navigation image, so that the trouble of manual switching is eliminated.

On the other hand, while traveling between the intersections C and D in FIG. 17, the distance between the intersections is short and the vehicle travels at a speed near the predetermined vehicle speed Vd for switching the displayed image.
The navigation image and the surrounding image are switched twice between the intersection D and the intersection D, and even when the driver observes the displayed image, the images are frequently switched, which makes it difficult to observe the image. Therefore, in recent years, by utilizing the fact that the vehicle position detection accuracy by GPS (Global Positioning System) or the like has been remarkably improved, a device has been developed that displays a surrounding image when the vehicle runs near a preset monitor point. There is. As shown in FIG. 18, when traveling through intersections A, B, C and D preset as monitor points, surrounding images are displayed on the display while traveling within a predetermined distance Dr from each intersection.

[0006]

However, in the vehicle display device that displays the surrounding image when traveling within a predetermined distance from the monitor point as described above, the intersection B and the intersection C are used.
When driving in a place where the distance between the monitor points is short, such as between the intersection C and the intersection D, immediately after the display image is switched from the surrounding image to the navigation image, the surrounding image is switched again. There is a problem that it is troublesome due to such frequent switching of display images. The present invention is
In view of such conventional problems, it is an object of the present invention to provide a vehicular display device in which display images displayed on a display are prevented from being frequently switched.

[0007]

According to the present invention as set forth in claim 1, an image pickup device attached to a vehicle for photographing a surrounding image, a vehicle position detecting device for detecting the position of the vehicle, a vehicle position and a destination. Navigation device for selecting a travel route based on the map data, a display arranged near the driver's seat of the vehicle for switching between the surrounding image captured by the image capturing device and another image, and the travel route for the map data. A monitor point setting device that sets a monitor point on the top, and the first distance before the monitor point switches the display display to the surrounding image, and the second distance after passing the monitor point changes the display display to another image. After switching and switching to the surrounding image at the first distance before the monitor point, if the distance from the relevant monitor point to the next monitor point is less than or equal to a predetermined value, the surrounding image in the relevant section is displayed. It shall be a control apparatus to continue the display.

According to the second aspect of the present invention, the map data is attached to the vehicle, the image pickup device for photographing the surrounding image, the vehicle position detecting device for detecting the position of the vehicle, and the map data based on the position of the vehicle and the destination. A navigation device for selecting an upper traveling route, a display arranged near the driver's seat of the vehicle for switching the surrounding image captured by the image capturing device to another image, and a vehicle speed sensor for measuring the traveling vehicle speed of the own vehicle. ,
Within the first distance before the monitor point and the monitor point setting device that sets the monitor point on the travel route of the map data, when the traveling vehicle speed is equal to or lower than a predetermined value, the display on the display is a surrounding image and is larger than the predetermined value. When the traveling speed becomes higher than the above specified value after passing the monitor point, the display on the display is changed to another image and only the change to another image is allowed. In the case where the distance of the section is less than or equal to a predetermined distance, if the surrounding image is displayed when the monitor point is passed, the control device continues to display the surrounding image up to the first distance before the next monitor point. Shall be done.

According to the third aspect of the present invention, map data is attached based on the position of the vehicle and the destination of the vehicle which is attached to the vehicle and which captures an image of the surroundings, the position detecting device of the vehicle which detects the position of the vehicle. A navigation device for selecting an upper traveling route, a display arranged near the driver's seat of the vehicle for switching between the surrounding image captured by the image capturing device and other images, and a vehicle speed sensor for measuring the traveling vehicle speed of the host vehicle. ,
A monitor point setting device for setting a monitor point on the travel route of the map data, a manually operated surrounding image changeover switch,
When the surrounding image changeover switch is operated when the traveling vehicle speed is less than or equal to a predetermined value, the display on the display is the surrounding image, and when the surrounding image changeover switch is operated again while the surrounding image is displayed or the traveling vehicle speed is When it becomes larger than a predetermined value, the display on the display is switched to another image, and when the distance between the immediately preceding monitor point and the next monitor point is less than a predetermined value, the surrounding image is displayed. , The control device continues to display the surrounding image unless the surrounding image changeover switch is operated to the next monitor point.

According to another aspect of the present invention, there is provided a changeover switch which is connected to the control device and which is manually operated. The control device is turned on even when the surrounding image is displayed on the display. Then, the display of the surrounding image shall be stopped.

According to a fifth aspect of the present invention, the navigation device outputs a navigation video signal and a route guidance signal to the control device, and the control device, even when the ambient video is displayed on the display, When the route guidance signal is input from the navigation device, the display on the display is switched to the navigation image. Further, in the present invention according to claim 6, there is a surrounding image restoration switch which is connected to the control device and is manually operated, and the control device receives the route guidance signal from the navigation device and outputs it from the navigation device. Even when the navigation image is displayed on the display, when the surrounding image restoration switch is operated, the display on the display is switched to the surrounding image.

[0012]

According to the first aspect of the present invention, the second distance after passing the monitor point is set from the first distance before the monitor point set by the user.
The surrounding image is automatically displayed on the display while traveling up to the distance of, and the surrounding image is continuously displayed when traveling in a place where the distance between the two monitor points is less than a predetermined value. It is possible to prevent frequent switching of the display image, such as switching to the surrounding image again immediately after the display image is switched from the surrounding image to another navigation image or the like. As monitoring points, for example, if all intersections on the travel route are set, surrounding images are automatically displayed at each intersection, and when traveling on a commuting route, narrow intersections and line-of-sight By selecting and setting a bad intersection or an intersection with a high accident occurrence rate, the user automatically switches to the surrounding image only at the points where the user wants to observe the front, right, left, and right side monitor images by the surrounding image.

According to the second aspect of the present invention, when the distance between the monitors is not more than a predetermined value, if the surrounding image is displayed when the first monitor point is passed, the monitor point before the second monitor point is passed. Since the surrounding image is continuously displayed until the first distance, it is possible to prevent the displayed image from being frequently switched. Further, by providing the vehicle speed sensor, at the first distance before the monitor point, when the traveling vehicle speed measured by the vehicle speed sensor is equal to or lower than a predetermined value, the surrounding image is automatically displayed on the display, and the vehicle speed higher than the predetermined speed is displayed. When you run in, other navigation images etc. are displayed. Therefore, when the vehicle stops immediately before a monitor point such as an intersection or the vehicle speed decreases, the surrounding image is automatically switched, but when the monitor point passes at a speed higher than a predetermined speed, the surrounding image is switched. Therefore, the number of times the display video is switched is reduced.

Further, after passing the monitor point, until the first distance before the next monitor point is reached, if the traveling speed increases, the surrounding image is switched to the navigation image or the like, but even if the traveling speed decreases. Since the navigation image is not switched to the surrounding image, it is not possible to switch to the surrounding image even if the vehicle speed decreases while driving in a place away from the next monitor point, that is, a place where the surrounding image is unnecessary. Without
The number of times the display image is switched is further reduced.

According to the third aspect of the present invention, when the surrounding image is displayed and the next monitor point is displayed when the distance between the immediately preceding monitor point and the next monitor point is equal to or less than a predetermined distance. Since the display of the surrounding image is continued, it is possible to prevent the display image from being frequently switched. In addition, it is equipped with a vehicle speed sensor and a surrounding image changeover switch by manual operation.When the surrounding image changeover switch is operated when the traveling vehicle speed is less than a predetermined value, the display on the display is changed to the surrounding image, so monitoring points such as intersections are displayed. Even if the vehicle speed decreases when passing through, the surrounding image is not automatically switched, and the surrounding image is switched only when the user operates the surrounding image changeover switch. Thereby, when the surrounding image is unnecessary or when it is desired to maintain the navigation guidance, the display of the navigation image or the like can be continued. Further, when the vehicle speed becomes faster than the predetermined speed, other navigation images and the like are automatically displayed, so that the trouble of using the manual changeover switch is reduced. The navigation image can be confirmed at any time by pressing the surrounding image changeover switch again while the surrounding image is being displayed.

According to the fourth aspect of the present invention, it has a manually operated changeover switch, and even when the ambient image is displayed on the display, when the changeover switch is turned on, the display of the ambient image is stopped. , Even if the surrounding image is displayed, you can switch from the surrounding image to other navigation images, etc., by a manual switch.
The display image desired by the driver can always be displayed.

According to the present invention, the display on the display can be switched to the navigation image when the route guidance signal is input from the navigation device even when the ambient image is displayed on the display. Since the navigation image is automatically displayed when the route guidance signal is output from the navigation device while displaying the surrounding image, there is no fear that the route guidance from the navigation device is not displayed.

According to the sixth aspect of the present invention, there is provided a manually operated ambient image restoration switch, a route guidance signal is input from the navigation device, and the navigation image output from the navigation device is displayed on the display. Even when the ambient image restoration switch is operated, the display on the display can be switched to the ambient image, and the display image is automatically switched from the ambient image to the navigation image by the route guidance from the navigation device. Even in this case, it is possible to manually switch to the surrounding image.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to examples. FIG. 1 is a diagram showing a configuration of a first exemplary embodiment of the present invention. This vehicle display device includes an image pickup device 1 installed at a front end portion of a vehicle, a navigation device 2 including a map database 3, and a vehicle position detection device 4 that includes a GPS (Global Positioning System) and detects a traveling position of the vehicle. And a display 5 for displaying a navigation image output from the navigation device 2 or a surrounding image captured by the imaging device 1, a monitor point setting device 6 for setting a monitor point, and an image displayed on the display 5 for switching control. The control device 7 is configured to operate. An image pickup device 1, a navigation device 2, a display 5, and a monitor point setting device 6 are connected to the control device 7.

The image pickup device 1 picks up images of the front left and right sides of the vehicle and outputs them to the control device 7 as surrounding images. The vehicle position detection device 4 is connected to the navigation device 2 and outputs detected vehicle position information. The navigation device 2 selects a travel route in the map database based on the destination and route selection information input from an input device (not shown) and the own vehicle position information detected by the vehicle position detection device 4, and determines the own vehicle position. Information and navigation video information for guiding the travel route are output to the control device 7.

The control device 7 generates a switching trigger to the surrounding image for displaying the surrounding image on the display 5 or a switching trigger to the navigation image for displaying the navigation image according to the vehicle position information, and displays it on the display 5. Change the image to be displayed. It also has a memory MA and a memory MB. The display 5 is installed in a position where the driver can easily see it in the vehicle, and under the control of the control device 7, the imaging device 1 is provided.
The surrounding image captured in step 1 or the navigation image output from the navigation device 2 is displayed. The monitor point setting device 6 sets all intersections on the travel route as monitor points, sets intersections with a predetermined road width or less as monitor points, and sets intersections in residential areas or intersections that frequently cause accidents as monitor points. Alternatively, the monitor point can be set by a method in which the driver individually sets an intersection where the surrounding image is to be displayed as a monitor point, or an arbitrary combination thereof.

Next, the operation of the first embodiment will be described. First, the driver sets a monitor point using the monitor point setting device 6. In this embodiment, all intersections on the travel route are set as monitor points. The vehicle position detection device 4 detects the own vehicle position at predetermined time intervals and outputs the own vehicle position information to the navigation device 2. The navigation device 2 selects map data corresponding to the own vehicle position from the input destination, route selection information and own vehicle position information,
It is output to the control device 7 as navigation image information.
Further, the own vehicle position information is also output to the control device 7.

The operation of the controller 7 will be described with reference to the flowchart shown in FIG. In step 101, the control device 7 generates a switching trigger for switching to the navigation image, and the display 5
Display the navigation video on. In step 102, an intersection to be passed next on the traveling route of the own vehicle is determined based on the own vehicle position information and the navigation image information input from the navigation device 2.

In step 103, the position information of the next intersection is stored in the memory MA. In step 104, the distance DA between the own vehicle and the next intersection is calculated based on the own vehicle position information and the position information of the next intersection stored in the memory MA. In step 105, the preset distance D1 is compared with the distance DA. If the distance DA is larger than the distance D1, the process returns to step 104, and steps 104 and 105 are repeated at predetermined time intervals. If the distance DA is less than or equal to the distance D1, the process proceeds to step 106.

In step 106, the control device 7 operates the image pickup device 1 to generate a switching trigger to the ambient image and display the ambient image on the display 5. Step 107
Then, again, the distance DA between the own vehicle and the next intersection is calculated from the own vehicle position information and the position information of the next intersection stored in the memory MA. In step 108, if the distance DA is 0, the process proceeds to step 109, and if it is greater than 0, the process returns to step 107, and steps 107 and 108.
Is repeated at predetermined time intervals. At step 109, the value stored in the memory MA is moved to the memory MB. That is, the memory MB stores the position information of the intersection that has passed just before.

In step 110, a new intersection to be passed next on the travel route of the vehicle is determined. Step 111
Then, the position information of the next intersection is stored in the memory MA. In step 112, the inter-intersection distance LA is calculated from the position information of the intersection passed immediately before stored in the memory MB and the next intersection position information stored in the memory MA. In step 113, the preset distance L1 is compared with the distance LA, and if the distance LA is less than or equal to the distance L1,
Returning to step 107, steps 107 to 11
Repeat 3. If the distance LA is larger than the distance L1, the process proceeds to step 114.

In step 114, the distance DB between the own vehicle and the passing intersection is calculated based on the own vehicle position information and the position information of the intersection which has passed just before and is stored in the memory MB. In step 115, the preset distance D2
Is compared with the distance DB, and if the distance DB is larger than the distance D2, the process proceeds to step 116. If the distance DB is smaller than the distance D2, the process returns to step 114, and steps 114 and 115 are repeated at predetermined time intervals. In step 116, a switching trigger to the navigation image is generated and the navigation image is displayed on the display 5. At this time, the operation of the image pickup apparatus 1 is automatically stopped. Then, the process returns to step 104. The distance D1 is the first distance of the invention, and the distance D2 is the second distance of the invention.

The operation on the actual traveling route will be described with reference to FIGS. 3 and 4. First, as shown in FIG. 3, when traveling is started from the point s toward the intersection A and the vehicle display device is operated, a navigation image is displayed in step 101, the intersection A is determined in step 102, and step 103 is performed. Then, the position information of the intersection A is stored in the memory MA. By repeating steps 104 and 105, the vehicle approaches the intersection A, the distance DA becomes equal to the predetermined distance D1 at the point a1, and at step 106, as shown in FIG. Is generated and the image displayed on the display 5 is switched to the surrounding image. When the vehicle reaches the intersection A by repeating steps 107 and 108, the process proceeds to step 109, the position information of the intersection A is moved to the memory MB, the next intersection B is determined in step 110, and the step 112 is performed.
Then, the position information of the intersection B is stored in the memory MA.

In step 112, the inter-intersection distance LA between the intersection A and the intersection B is calculated. Since the distance LA between the intersections is larger than the predetermined distance L1, the process proceeds from step 113 to step 114, the distance DB between the own vehicle and the intersection A is calculated, and at the point a2 where the distance DB becomes larger than the predetermined distance D2, the step 116 is performed. Proceeding to, a switching trigger for navigation video is generated, and switching to navigation video is performed. Step 1
The process returns from step 16 to step 104, and as shown in FIG. 4B, the navigation image is switched to the surrounding image at the point b1 similarly to the point a1.

When the vehicle passes the intersection B, the memory MA stores the position information of the intersection B, and the memory MA stores the position information of the intersection C. In step 112, the inter-intersection distance LA between the intersections B and C is calculated, and when it is determined in step 113 that the distance LA is the predetermined value L1 or less, the process returns from step 113 to step 107,
Step 107 and step 10 until the intersection C is reached
Repeat 8. Therefore, at the point b2, although the distance DB is larger than the distance D2, the switching trigger to the navigation image is not generated, and the surrounding image is continuously displayed on the display 5.

Even when the vehicle passes the intersection C, steps 107 to 113 are repeated and the surrounding image is continuously displayed. When passing through the intersection D, the distance LA between the intersections E and D (not shown) becomes a predetermined distance L1.
Since it is larger, the process proceeds from step 113 to step 114, and when the vehicle reaches the point d2 in FIG. 4 (c), a switch trigger to the navigation image is generated and the ambient image is switched to the navigation image.

As a result, the surrounding image is automatically displayed on the display 5 while traveling from the front distance D1 of the intersection, which is the monitor point set by the user, to the distance D2 after passing the intersection, and the two images are displayed. When the distance between the intersections is less than or equal to the predetermined distance L1, the surrounding image is continuously displayed, so that the display is frequently switched to the surrounding image immediately after the display image is switched from the surrounding image to the navigation image. The switching of images is prevented and the troublesomeness is reduced.

Next, FIG. 5 shows a second embodiment having a function of manually switching the ambient image to the navigation image while displaying the ambient image. In this embodiment, the monitor point condition is set, and the surrounding image is displayed only at the intersections that satisfy the monitor point condition. This display device includes an image pickup device 1, a navigation device 2 including a map database 3, a vehicle position detection device 4, a display 5, a monitor point setting device 6, and an input device 8 arranged near a driver for inputting monitor range information. And a navigation image changeover switch 9 for switching to a navigation image by a manual operation, and a control device 10. The navigation video changeover switch 9 constitutes the changeover switch of the invention.

The input device 8 is a device for inputting monitor range information. As the monitor range information, when the monitor point is within a distance D3, the display is switched to the surrounding image,
When the distance from the monitor point is D4 or more, the distances D3 and D in the control operation for switching to the navigation image
4 and the distance between the monitor points is less than or equal to the distance L2, there is a distance L2 in the control for displaying the surrounding image between them.

The navigation image changeover switch 9 is a changeover switch which is manually operated to switch between an on state and an off state. The control device 10 includes a memory MC and a memory MD,
Depending on the vehicle position information of the navigation image information and the ON / OFF state of the navigation image switching switch 9, a switching trigger to a surrounding image for displaying the surrounding image on the display 5 or a switching trigger for a navigation image to display the navigation image is set. The image generated and displayed on the display 5 is switched. The other structure is similar to that of the first embodiment shown in FIG.

Next, the operation of the second embodiment will be described. First, the vehicle position detection device 4 detects the own vehicle position at predetermined time intervals and outputs the own vehicle position information to the navigation device 2. In this embodiment, the driver uses the monitor point setting device 6 to set the road width as the monitor point condition. In addition, as the monitor range information from the input device 8, a distance D3 that is a first distance and D4 and L2 that are second distances.
Enter.

The operation of the control device 10 will be described with reference to the flowchart shown in FIG. In step 201, the control device 10 generates a navigation video switching trigger, and the display 5 displays the navigation video. Step 202
Then, based on the own vehicle position information and the navigation image information input from the navigation device 2, the next crossing on the travel route of the own vehicle is determined. Step 203
Then, it is determined whether or not the next passing intersection corresponds to the monitor point condition set by the monitor point setting device 6, and if it is a monitor point, the process proceeds to step 204. If it is not a monitor point, the process returns to step 202, the next intersection after the currently determined intersection is determined, and steps 202 and 203 are repeated until a monitor point is found.

In step 204, the position information of the next monitor point determined in step 203 is stored in the memory MC. In step 205, the distance DC between the own vehicle and the next monitor point is calculated based on the own vehicle position information and the position information of the next monitor point stored in the memory MC. Step two
In 06, the distance D3 and the distance DC set by the input device 8 are set.
And the distance DC is larger than the distance D3, the process returns to step 205, and steps 205 and 206 are repeated at predetermined time intervals. If the distance DC is less than or equal to the distance D3, the process proceeds to step 207. In step 207, it is determined whether or not the navigation video selector switch 9 is turned on. If it is turned on, the process proceeds to step 208, and if it is not turned on, the process proceeds to step 209.

In step 208, if the navigation image is displayed on the display 5 at the time when step 208 is reached, the navigation image is continuously displayed. If the surrounding image is displayed on the display 5,
It generates a switching trigger for navigation video and switches the display video to navigation video. In step 209, if the surrounding image is displayed on the display 5 at the time when step 209 is reached, the surrounding image is continuously displayed. If the navigation image is displayed on the display 5, a switching trigger to the surrounding image is generated and the display image is switched to the surrounding image.

In step 210, the distance DC between the own vehicle and the next monitor point is calculated from the own vehicle position information and the position information of the next monitor point stored in the memory MC. Step 21
In 1, it is determined whether or not the distance DC is 0. If it is 0, the process proceeds to step 212, and if it is greater than 0, the step 2 is performed.
Returning to 07, steps 207 to 211 are repeated at predetermined time intervals. In step 212, the value stored in the memory MC is moved to the memory MD.

At step 213, a new intersection to be passed next on the travel route of the vehicle is newly determined. In step 214, similarly to step 203, it is determined whether or not the next passing intersection is the monitor point. If it is the monitor point, the process proceeds to step 215. If it is not the monitor point, the process returns to step 213, the intersection next to the currently determined intersection is determined, and steps 213 and 214 are repeated until the monitor point is found. In step 215, the position information of the next monitor point determined in step 214 is stored in the memory MC.

In step 216, the inter-monitor-point distance LC is calculated from the position information of the immediately preceding monitor point stored in the memory MD and the position information of the next monitor point stored in the memory MC. In step 217, the distance L2 set by the input device 8 is compared with the distance LC, and the distance L
If C is the distance L2 or less, the process returns to step 207 and steps 207 to 217 are repeated. If the distance LC is larger than the distance L2, the process proceeds to step 218.

In step 218, similarly to step 207, it is determined whether or not the navigation video changeover switch is turned on. If it is on, proceed to step 219,
A navigation image is displayed on the display 5. If it is not turned on, the process proceeds to step 220, and the surrounding image is displayed on the display 5. In step 221, the distance DD between the own vehicle and the passing monitor point is calculated based on the own vehicle position information and the position information of the monitor point passed immediately before stored in the memory MD.

In step 222, it is judged whether or not the distance DD is larger than the distance D4 set by the input device 8. If the distance DD is larger than the distance D4, step 22 is executed.
Go to 3. If the distance DD is less than or equal to the distance D4, step 2
Returning to step 18, step 218 to step 222 are repeated at predetermined time intervals. In step 223, the navigation image is displayed on the display 5, and then in step 2
Return to 05.

The operation on the actual traveling route will be described with reference to FIGS. 7 and 8. First, the operation in the case of traveling without turning on the navigation video selector switch 9 will be described with reference to FIG. When traveling is started from the point s toward the intersection A and the vehicle display device is operated, a navigation image is displayed in step 201, the intersection A is determined in step 202, and the intersection A is a monitor point in step 203. Determine if there is. With the monitor point setting device 6,
Since the road width of the intersection A is narrower than the road width set as the monitor point condition, the intersection A is determined to be the monitor point. In step 204, the position information of the intersection A is stored in the memory MC.

By repeating Steps 205 and 206, the vehicle approaches the intersection A, the distance DC becomes equal to the predetermined distance D3 at the point a3 in FIG. 7, and Step 207
Go to. In step 207, the navigation video selector switch 9
Is not in the on state, the process proceeds to step 209, and the image displayed on the display 5 is switched to the surrounding image. Until the vehicle reaches the intersection A, steps 207 to 211 are repeated at predetermined time intervals and the surrounding image is continuously displayed.

When it comes to the intersection A, the process proceeds to step 212, the position information of the intersection A is moved to the memory MD, the next intersection B is judged at step 213, and the intersection B is determined from the road width set as the monitor point condition. Since the road width is large, it is determined in step 214 that the intersection B is not the monitor point, and the process returns to step 213 to determine the next intersection C. It is determined that the intersection C has a narrow road width and is a monitor point, and the process proceeds from step 214 to step 215, where the position information of the intersection C is stored in the memory MC.

At step 216, the distance LC between the intersections A and C is calculated. Since the inter-intersection distance LC is larger than the distance L2 input from the input device 8, the process proceeds from step 217 to step 218, and step 20
Similar to 7, the navigation image change-over switch 9 is not turned on, so the routine proceeds to step 220, and the surrounding image is continuously displayed on the display 5. In step 221, the distance DD between the host vehicle and the intersection A is calculated, and steps 218 to 222 are repeated at predetermined time intervals until the point a4 at which the distance DD becomes larger than the predetermined distance D4 input from the input device 8. Be done.

When the vehicle reaches the point a4, step 22
The process proceeds from step 2 to step 223, the display of the navigation image is switched, the process returns to step 205, and steps 205 and 206 are repeated. After that, at point c3, step 2
From 06, the process proceeds to step 207, and the surrounding image is switched.
When the vehicle travels to the point c4, the memory MD stores the position information of the intersection C, and the memory MC stores the position information of the intersection D.
Since C is smaller than the distance L2, the process returns from step 217 to step 207. Therefore, while traveling between the intersections C and D, the surrounding image is continuously displayed. After that, the same operation is performed.

Next, the operation when the navigation video selector switch 9 is turned on will be described with reference to FIG. For example, when traveling to the point c5 while traveling between the intersections C and D,
When the navigation image change-over switch 9 is manually turned on, at this time, step 207 to step 211 are repeated at predetermined time intervals, so step 207
To step 208, the control device 10 generates a navigation video switching trigger and switches to display of the navigation video. Similarly, when the navigation image changeover switch 9 is turned off at the point c6, the process proceeds from step 207 to step 209, and the control device 10 generates a changeover trigger for changing to the surrounding image and displays the surrounding image.

As a result, the same effect as in the first embodiment can be obtained, and by selecting and setting an intersection with a narrow road width as a monitor point, the driver can monitor the front and left and right sides of the monitor image by the surrounding image. Only the monitor points you want to observe,
The surrounding image is automatically switched to the display image, and the navigation image is continuously displayed at the point where the surrounding image is not required to be displayed. Even when the surrounding image is displayed, the surrounding image can be switched to the navigation image by the navigation image changeover switch 9 by manual operation, and the display image desired by the driver can be always displayed, which is convenient for the vehicle display device. You can improve the property.

Next, a third embodiment in which the navigation image is automatically displayed when a route guidance signal is output from the navigation device even when the surrounding image is displayed on the display 5 It shows in FIG. This display device includes an image pickup device 1, a navigation device 11 including a map database 3, a vehicle position detection device 4, a display 5, a monitor point setting device 6, and an input device 8 arranged near a driver for inputting monitor range information. And an ambient image restoration switch 12 for manually restoring the ambient image,
And a control device 13. The navigation device 11 outputs the navigation video information corresponding to the own vehicle position to the control device 13 from the input destination, route selection information and own vehicle position information. The vehicle position information and the route guidance signal are also output to the control device 13.

The control unit 13 includes a memory MC and a memory M.
Built-in D, vehicle position information of navigation video information,
In response to the route guidance signal and the pressing operation of the surrounding image restoration switch 12, a switching trigger to the surrounding image for displaying the surrounding image on the display 5 or a switching trigger to the navigation image for displaying the navigation image is generated and displayed on the display 5. Switch the displayed image. Further, the surrounding image restoration switch 12 is a switch that is turned on by a pressing operation, and the control device 13 causes the surrounding image restoration switch 12 to be temporarily pressed when the route guidance signal is being output. While the route guidance signal is being output, the ON state is stored and retained, and when the output of the route guidance signal is stopped, the storage of the ON state is released. Other configurations are similar to those of the second embodiment shown in FIG.

The operation of this embodiment is performed in steps 207 to 209 and step 2 of the flowchart shown in FIG.
Instead of 18 to step 220, the operations of step 301 to step 304 shown in FIG. 10 are performed respectively. In step 301, the navigation device 1
It is determined whether or not the route guidance signal is output from 1. If it is not output, the process proceeds to step 302, and if it is output, the process proceeds to step 303. Step 30
In 2, if the ambient image is being displayed on the display 5 at the time when step 302 is reached, the ambient image is continuously displayed. If the navigation image is displayed on the display 5, a switching trigger to the surrounding image is generated and the display image is switched to the surrounding image.

In step 303, it is determined whether or not the surrounding image restoration switch 12 is pressed to be in the ON state. If it is in the ON state, the process proceeds to step 302 and the surrounding image is displayed. If it is not on, the process proceeds to step 304. In step 304, if the navigation image is displayed on the display 5 at the time when step 304 is reached, the navigation image is continuously displayed.
If the surrounding image is displayed on the display 5, a switching trigger to the navigation image is generated and the display image is switched to the navigation image.

That is, as shown in FIG. 11, when the route guidance signal is not output while traveling between the intersections C and D, the process proceeds from step 301 to step 302, so that the section from the point c3 to the point d4 is the surrounding image. Is displayed, the process proceeds from step 301 to step 303 if a route guidance signal is output during that period. That is, point c7
Then, when the route guidance signal is first output, the surrounding image restoration switch 12 is in the off state at this time, so the process proceeds from step 301 to step 303 and step 304.
A switching trigger to the navigation image is generated and the navigation image is displayed. When the surrounding image restoration switch 12 is pressed at the point c8, the process proceeds from step 301 to step 303 and step 302, so even if a switching trigger to the surrounding image is generated and the route guidance signal is output, The surrounding image is displayed.

As a result, the same effect as that of the first embodiment can be obtained, and the navigation image is automatically displayed when the route guidance signal is output from the navigation device while the surrounding image is being displayed. Therefore, there is no fear that the route guidance from the navigation device is not displayed, and both the route guidance by the navigation device and the display of the surrounding image can be efficiently used.

Further, even when the route guidance signal is input from the navigation device and the navigation image output from the navigation device is displayed on the display, when the surrounding image restoration switch 12 is operated,
You can switch the display on the display to the surrounding image,
Even if the display image is automatically switched from the surrounding image to the navigation image by the route guidance from the navigation device, it can be manually switched to the surrounding image, and both the route guidance by the navigation device and the display of the surrounding image can be performed. Can be used more efficiently.

Next, FIG. 12 shows a fourth embodiment having a function of switching the surrounding image and the navigation image depending on the vehicle speed. This vehicle display device includes an imaging device 1, a navigation device 2 including a map database 3, a vehicle position detection device 4, a display 5, a monitor point setting device 6, a vehicle speed sensor 15 for measuring a traveling vehicle speed, a memory ME and a memory MF. It is composed of a built-in control device 16.

The control device 16 is connected to the image pickup device 1, the navigation device 2, the display 5, the monitor point setting device 6 and the vehicle speed sensor 15, and outputs the vehicle position information and the navigation image information output from the navigation device 2 and the vehicle speed. In accordance with the traveling vehicle speed detected by the sensor 15, a trigger for switching to the surrounding image for operating the imaging device 1 to display the surrounding image on the display 5 or a trigger for switching to the navigation image for displaying the navigation image is generated and displayed on the display 5. Switch the displayed image. Further, the distance D5 as the first distance before the monitor point and the inter-monitor point distance L3 are set in advance. The other structure is similar to that of the first embodiment shown in FIG.

Next, the operation of the fourth embodiment will be described. First, the vehicle position detection device 4 detects the own vehicle position at predetermined time intervals and outputs the own vehicle position information to the navigation device 2. The navigation device 2 outputs the navigation image information corresponding to the own vehicle position to the control device 16 from the input destination, route selection information and own vehicle position information. Further, the driver sets a monitor point from the monitor point setting device 6. In this embodiment, all intersections on the travel route are set as monitor points.

The operation of the control device 16 will be described with reference to the flowchart shown in FIG. In step 401, the control device 16 generates a switching trigger to the navigation image, and the display 5 displays the navigation image. Step 40
In 2, the intersection to pass next on the traveling route of the own vehicle is determined based on the own vehicle position information and the navigation image information input from the navigation device 2. Step 40
In 3, the position information of the next intersection determined in step 402 is stored in the memory ME.

In step 404, the distance DE between the own vehicle and the next intersection is calculated based on the own vehicle position information and the position information of the next intersection stored in the memory ME. In step 405, the distance DE is set to the preset distance D5.
It is determined whether or not it is larger than the distance. If it is larger than the distance D5, the process returns to step 404. , Steps 404 to 405 are repeated at predetermined time intervals. In step 406, the vehicle speed sensor 15
The traveling vehicle speed V is detected by. In step 407, the vehicle speed V detected in step 504 is compared with a preset predetermined speed V1, and if the vehicle speed V is faster than the predetermined vehicle speed V1, the process proceeds to step 408, and if it is slow, the process proceeds to step 407.

At step 408, if the navigation image is displayed at the time when step 408 is reached, the display is continued. If the surrounding image is displayed, a switching trigger to the navigation image is generated, the operation of the imaging device 1 is stopped,
The display image on the display 5 is switched to the navigation image and the process proceeds to step 410. In step 409, if the surrounding image is displayed at step 408, the display is continued. If the navigation image is displayed, a switching trigger to the surrounding image is generated, and the imaging device 1
Is operated to display the surrounding image on the display 5, and the process proceeds to step 410.

In step 410, the distance DE between the own vehicle and the next intersection is calculated based on the own vehicle position information and the position information of the next intersection stored in the memory ME. In step 411, it is determined whether or not the distance DE is 0, and 0 is determined.
If so, the process proceeds to step 412, and if greater than 0, the process returns to step 406, and steps 406 to 411 are repeated at predetermined time intervals. At step 412, the value stored in memory ME is moved to memory MF.

At step 413, the next intersection to be passed on the traveling route of the vehicle is newly determined. In step 414, the position information of the next intersection determined in step 413 is stored in the memory ME. In step 415, the memory M
F The location information of the intersection that passed just before is stored,
The inter-intersection distance LE is calculated from the next intersection position information stored in the memory ME. In step 416, the distance L
E is compared with a predetermined distance L3 set in advance, and the distance L
If E is larger than the distance L3, the process proceeds to step 417.
If the distance LE is less than or equal to the distance L3, the process proceeds to step 422.

In step 417, the vehicle speed sensor 15 detects the traveling vehicle speed V. In step 418, the vehicle speed V detected in step 417 is compared with the predetermined speed V1, and if the vehicle speed V is higher than the predetermined vehicle speed V1, the process proceeds to step 419, and if it is slow, the process proceeds to step 420. In step 419, if the navigation image is displayed, the display is continued, and if the surrounding image is displayed, a switching trigger to the navigation image is generated, the operation of the imaging device 1 is stopped, and the navigation is displayed on the display 5. Display the image.

In step 420, the distance DE between the own vehicle and the next intersection is calculated based on the own vehicle position information and the position information of the next intersection stored in the memory ME. In step 421, the distance DE is set to the preset distance D5.
It is determined whether or not it is larger than the distance. If it is larger than the distance D5, the process returns to step 417 and steps 417 to 421 are repeated at predetermined time intervals. In step 422, the distance DE between the own vehicle and the next intersection is calculated based on the own vehicle position information and the position information of the next intersection stored in the memory ME. In step 423, it is determined whether or not the distance DE is greater than the preset distance D5, and if it is less than or equal to the distance D5, the process proceeds to step 406. If it is larger than the distance D5, the process returns to step 422 and steps 422 to 423 are repeated at predetermined time intervals.

The operation on the actual traveling route will be described with reference to FIG. First, when traveling is started from the point s toward the intersection A and the vehicle display device is operated, step 4
The navigation image is displayed at 01, the intersection A is determined at step 402, and the position information of the intersection A is stored in the memory ME at step 403. In step 404, the distance DE between the vehicle position and the intersection A is calculated, and in step 405 the distance DE is compared with the preset distance D5. Ie intersection A
Steps 404 and 405 are repeated until the point a5, which is a distance D5 away from, is reached, and the navigation image is displayed during that time.

When the vehicle arrives at the point a5, the process proceeds from step 405 to step 406, the vehicle speed V is detected in step 406,
The displayed image is switched depending on the vehicle speed V. Point a5 to point a
Since the vehicle speed V is higher than the predetermined speed V1 during the period 6, the process proceeds from step 405 to steps 406 and 408, and returns from step 410 and step 411 to step 406, so that the navigation image is displayed on the display 5. When the vehicle exceeds the point a6, the vehicle speed V becomes equal to or lower than the predetermined speed V1, so that the process proceeds from step 405 to step 407, and the surrounding image is displayed.

After passing the intersection A, the process proceeds from step 411 to step 412, the position information of the intersection A is moved to the memory MF, and the steps 413 and 414 are carried out.
Then, the position information of the next intersection B is stored in the memory ME.
In step 416, the distance L between the intersections A and B
E is calculated. Since the inter-intersection distance LE is larger than the predetermined distance L3, the process proceeds from step 416 to step 417.

Steps 417 to 421 are repeated at predetermined time intervals until the vehicle arrives at the point b5 before the next intersection B. If the vehicle speed V is higher than the predetermined speed V1 while traveling during this period, steps 416 to 4 are performed.
Since the process proceeds to 19, the image displayed on the display 5 is switched to the navigation image, but it is not switched to the surrounding image even if the vehicle speed V decreases to the predetermined speed V1 or less.
That is, when the inter-intersection distance LE is larger than the distance L3, as shown in FIG. 14, after the vehicle is temporarily switched from the surrounding image to the navigation image at the point a7 where the vehicle speed V is increased, even if the vehicle speed V is reduced, the surrounding image is displayed. It does not switch to video.

The point b5 is a point which is a predetermined distance D5 away from the intersection B, and when the vehicle reaches the point b5, step 42 is performed.
The procedure returns from 1 to step 406. From step 406 to step 411, the navigation image and the surrounding image are switched depending on the magnitude of the vehicle speed V. In FIG. 14, since the vehicle speed V did not decrease between the point b5 and the intersection B, the navigation image is continuously displayed. After passing the intersection B, the process proceeds from step 412 to step 416 again, and the intersection B and the next intersection C
The distance LE between is compared with a predetermined distance L3. Since the intersection distance LE is less than or equal to the predetermined distance L3, this time step 4
Proceed to 22.

In steps 422 and 423, the display video is not switched. That is, when passing through an intersection, if the distance LE to the next intersection is equal to or less than the predetermined distance L3, the image when passing through the intersection is continuously displayed. Point c9 is a point that is a predetermined distance D5 away from intersection C, and when the vehicle reaches point c9, step 4
The procedure returns from step 23 to step 406. From step 406 to step 411, the navigation image and the surrounding image are switched depending on the magnitude of the vehicle speed V. Therefore, the image is switched to the surrounding image at the point c10 where the vehicle speed decreases.

After that, the surrounding image is displayed at the intersection C,
Since the distance LE between the intersections C and D is small, the process proceeds from step 422 to step 423 and the point c
Even if the vehicle speed V increases at 11, the vehicle advances to the point d5 without switching to the navigation image. The point d5 is a point away from the intersection D by a predetermined distance D5. When the vehicle reaches the point d5, the process returns from step 423 to step 406, but the vehicle speed V
Is small, the vehicle passes through the intersection D while the surrounding image is displayed. Since the distance between the intersection D and the intersection E (not shown) is larger than the predetermined distance L3, the process proceeds from step 416 to step 417. Therefore, when the vehicle speed V increases to the point d6, the navigation image is switched.

That is, by providing the vehicle speed sensor 15, when the vehicle speed V measured by the vehicle speed sensor 15 is equal to or lower than the speed V1 while traveling within the front distance D5 of the intersection, the surrounding image is automatically displayed on the display 5. When the vehicle is displayed and the vehicle travels at a speed higher than the speed V1, the navigation image is displayed. Therefore, when the vehicle stops immediately before an intersection or when the vehicle speed decreases, the surrounding image is automatically switched, but when the vehicle passes through the intersection at a vehicle speed higher than the speed V1, the surrounding image is not switched. The number of times the displayed video is switched is reduced.

The distance between adjacent intersections is the distance L.
When it is greater than 3, while traveling between the two intersections, the vehicle speed V is higher than the speed V1 and is higher than the speed V1 from when the vehicle passes the first intersection until the distance D5 before the next intersection is reached. When the surrounding image is displayed when the vehicle speed changes, the surrounding image is switched to the navigation image. However, when the vehicle speed V decreases from a speed higher than the speed V1 to a speed V1 or less, the surrounding image is displayed. Is not switched to.

As a result, the vehicle speed decreases when passing through an intersection, and even when the surrounding image is switched, if there is a sufficient distance to the next passing intersection, if the vehicle speed increases, the surroundings will automatically change. It is not necessary to switch from the image to the navigation image, and while driving at a point where there is a sufficient distance to the next passing intersection, the image does not automatically switch to the surrounding image even if the vehicle speed decreases, which is unnecessary. It is possible to prevent the surrounding image from being displayed at various points, further reduce the number of times the display image is switched, and reduce the troublesomeness. Further, when adjacent intersections are present within the distance L3, while traveling between the two intersections, if the surrounding image is displayed when the first intersection is passed, then the intersection is passed next. Until the front distance D5 of the intersection is reached, the surrounding image is continuously displayed, the displayed image is prevented from being frequently switched, and the troublesomeness is further reduced.

Next, FIG. 15 shows a fifth embodiment having a function of switching between the surrounding image and the navigation image by the vehicle speed and the surrounding image changeover switch. This vehicle display device,
An image pickup device 1, a navigation device 2 including a map database 3, a vehicle position detection device 4, a display 5, a monitor point setting device 6, a vehicle speed sensor 15 for measuring the traveling vehicle speed, a surrounding image changeover switch 17, a memory MG and a memory MH are built-in. The control device 18 is configured to operate.

The control device 18 is connected to the image pickup device 1, the navigation device 2, the display 5, the monitor point setting device 6 and the vehicle speed sensor 15, and outputs the vehicle position information and the navigation image output from the navigation device 2 and the vehicle speed sensor. In accordance with the traveling vehicle speed detected in 15 and the state of the surrounding image changeover switch 17, the image pickup device 1 is operated to display the surrounding image information on the display 5 and a changeover trigger to the surrounding image or a navigation image to display the navigation image is displayed. A trigger is generated and the image displayed on the display 5 is switched. The surrounding image changeover switch 17 is a switch for manually displaying the surrounding image, and when the surrounding image changeover switch 17 is pressed, the control device 18 stores and holds the ON state thereof, and the image displayed on the display 5 is displayed. When the surrounding image is switched to the navigation image, the memory of the ON state is released. When the surrounding image changeover switch 17 is pressed while the memory of the ON state is held, the memory of the ON state is released. Other configurations are shown in FIG.
The same as the first embodiment shown in FIG.

Next, the operation of the fifth embodiment will be described. First, the vehicle position detection device 4 detects the own vehicle position at predetermined time intervals and outputs the own vehicle position information to the navigation device 2. The navigation device 2 outputs navigation image information corresponding to the position of the own vehicle to the control device 18 from the input destination, route selection information, and own vehicle position information. Further, the driver sets a monitor point from the monitor point setting device 6. In this embodiment, all intersections on the travel route are set as monitor points.

The operation of the controller 18 will be described with reference to the flowchart shown in FIG. In step 501, the control device 18 generates a switching trigger to the navigation image, and the display 5 displays the navigation image. Step 50
In 2, the intersection to pass next on the traveling route of the own vehicle is determined based on the own vehicle position information and the navigation image information input from the navigation device 2. Step 50
In 3, the position information of the next intersection determined in step 502 is stored in the memory MG.

In step 504, it is determined whether or not the surrounding image changeover switch 17 is in the on state. If it is not in the on state, the process proceeds to step 505. If it is on, the process proceeds to step 506. In Step 505, Step 5
When the navigation image is displayed at 05, the navigation image is continuously displayed, and when the surrounding image is displayed, a switching trigger to the navigation image is generated and the operation of the imaging device 1 is stopped. Then, the display image on the display 5 is switched to the navigation image, and step 50
Proceed to 9. In step 506, the vehicle speed sensor 15 detects the traveling vehicle speed V. In step 507, the vehicle speed V detected in step 504 is compared with the predetermined speed V2. If the vehicle speed V is faster than the speed V2, the process proceeds to step 505, and if the vehicle speed V is slower, the process proceeds to step 508.

At step 508, if the surrounding image is displayed at step 508, the process is continued. When the navigation image is displayed, a switching trigger to the surrounding image is generated, the imaging device 1 is operated, and the surrounding image is displayed. In step 509, the distance DG between the own vehicle and the next intersection is calculated based on the own vehicle position information and the position information of the next intersection stored in the memory MG. In step 510, it is determined whether or not the distance DG is 0. If it is 0, the process proceeds to step 511, and if it is greater than 0, the process returns to step 504 and steps 504 to 510 are repeated at predetermined time intervals.

At step 511, the value stored in the memory MG is moved to the memory MH. In step 512, a new intersection to be passed next on the travel route of the vehicle is determined. In step 513, the position information of the next intersection determined in step 512 is stored in the memory MG. In step 514, the inter-intersection distance LG is calculated from the position information of the intersection passed immediately before stored in the memory MH and the position information of the next intersection stored in the memory MG. In step 515, the distance LG is compared with the predetermined distance L4. If the distance LG is larger than the distance L4, step 50
Returning to step 4, steps 504 to 515 are repeated. If the distance LG is less than or equal to the distance L4, step 516
Go to.

In step 516, it is determined whether or not the surrounding image changeover switch 17 is on, and if not, the process proceeds to step 517. If it is on, the process proceeds to step 518. In Step 517, Step 5
When the navigation image is displayed at 17, the navigation image is continuously displayed, and when the surrounding image is displayed, a switching trigger to the navigation image is generated and the operation of the imaging device 1 is stopped. Then, the display image on the display 5 is switched to the navigation image, and step 5
Proceed to 21. In step 518, the vehicle speed sensor 15 detects the traveling vehicle speed V. In step 519, the vehicle speed V detected in step 516 is compared with the predetermined speed V2. If the vehicle speed V is faster than the speed V2, the process proceeds to step 521, and if the vehicle speed V is slower, the process proceeds to step 520. In step 520, the surrounding image is displayed on the display 5, as in step 508. In step 521, the vehicle position information and the memory M
Based on the position information of the next intersection stored in G,
The distance DG between the host vehicle and the next intersection is calculated. In step 522, it is determined whether or not the distance DG is 0, and if it is 0, the process returns to step 511. If it is larger than 0, the process returns to step 516 and steps 516 to 522 are repeated at predetermined time intervals.

That is, by providing the vehicle speed sensor 15 and the surrounding image changeover switch 17, the vehicle speed sensor 15
If the traveling vehicle speed measured in 1 is equal to or lower than the speed V2 and the surrounding image changeover switch 17 is in the on state, the surrounding image is displayed on the display. Therefore, when passing an intersection,
Even if the traveling vehicle speed decreases, the surrounding image does not switch to the surrounding image unless the surrounding image switching switch is in the ON state, and the surrounding image changes only when the vehicle speed is slow and the user presses the surrounding image changing switch 17. , If you do not need the surrounding image, or if you want to keep the navigation guidance, you can continue to display the navigation image,
The convenience of the vehicle display device is improved.

The distance between adjacent intersections is the distance L.
If it is larger than 4, while traveling between the two intersections, when the vehicle speed changes from the speed V2 or less to a speed higher than the speed V2, the surrounding image is automatically switched to another navigation image. Therefore, the troublesomeness of using the manual changeover switch is reduced. Furthermore, when the distance between adjacent intersections is less than or equal to the distance L4, the surrounding image changeover switch 17 is used while traveling between the two intersections.
When is on, when the surrounding image is displayed, the surrounding image is continuously displayed until the next passing intersection is reached, and the displayed image is prevented from being frequently switched,
The troublesomeness is reduced. The navigation image can be confirmed at any time by pressing the surrounding image changeover switch 17 again while the surrounding image is being displayed.

[0089]

According to the first aspect of the present invention, the surrounding image is automatically displayed on the display while traveling from the first distance before the monitor point set by the user to the second distance after passing the monitor point. In addition, when the vehicle is traveling in a place where the distance between the two monitor points is less than or equal to a predetermined value, the surrounding image is continuously displayed. Therefore, the surrounding image is displayed again immediately after the display image is switched from the surrounding image to the navigation image. Frequent switching of the displayed image, such as switching to the image, is prevented, and the troublesomeness is reduced. As monitoring points, for example, if all the intersections on the travel route are set, the surrounding image is automatically displayed at each intersection, and when traveling on the commuting route, the intersection with a narrow road width or poor visibility is displayed. By selecting and setting an intersection or an intersection with a high accident rate, the user can automatically switch to the surrounding image at the point where the user wants to observe the front, left, and right sides of the monitor image with the surrounding image. .

According to the second aspect of the present invention, when the distance between the monitors is not more than a predetermined value, if the surrounding image is displayed when the first monitor point is passed, the monitor point before the next monitor point is passed. Up to the first distance, the surrounding image is continuously displayed, so that it is possible to prevent the displayed image from being frequently switched, and the annoyance is reduced. Further, by providing the vehicle speed sensor, at the first distance before the monitor point, when the traveling vehicle speed measured by the vehicle speed sensor is equal to or lower than a predetermined value, the surrounding image is automatically displayed on the display, and the vehicle speed higher than the predetermined speed is displayed. When you run in, other navigation images etc. are displayed. Therefore, when the vehicle stops immediately before a monitor point such as an intersection or the vehicle speed decreases, the surrounding image is automatically switched, but when the monitor point passes at a speed higher than a predetermined speed, the surrounding image is switched. Therefore, the number of times the display video is switched is reduced.

Further, after passing the monitor point, the surrounding image is switched to the navigation image or the like if the traveling speed increases until the first distance before the next monitor point is reached.
Even if the traveling speed decreases, the navigation image does not switch to the surrounding image.Therefore, even if the vehicle speed decreases while traveling in a place away from the next monitor point, that is, a place where the surrounding image is unnecessary. There is no switching to the surrounding image,
Furthermore, the number of times the display image is switched is reduced, which further reduces the hassle.

According to the third aspect of the present invention, when the distance between the immediately preceding monitor point and the next monitor point is less than or equal to a predetermined value, when the surrounding image is displayed, the next monitor point is displayed. Since the display of the surrounding image is continued, it is possible to prevent the display image from being frequently switched, and the troublesomeness is reduced.
In addition, it is equipped with a vehicle speed sensor and a surrounding image changeover switch by manual operation.When the surrounding image changeover switch is operated when the traveling vehicle speed is less than a predetermined value, the display on the display is changed to the surrounding image, so monitoring points such as intersections etc. Even if the vehicle speed decreases when passing through, the surrounding image is not automatically switched, and the surrounding image is switched only when the user operates the surrounding image changeover switch. As a result, when the surrounding image is unnecessary, or when the driver wants to maintain the guidance by the navigation, the navigation image and the like can be continuously displayed, and the convenience is improved. Further, when the vehicle speed becomes faster than the predetermined speed, other navigation images and the like are automatically displayed, so that the trouble of using the manual changeover switch is reduced. The navigation image can be checked at any time by operating the surrounding image changeover switch again while the surrounding image is being displayed.

According to the fourth aspect of the present invention, it has a manually operated changeover switch, and even when the surrounding image is displayed on the display, if the changeover switch is turned on, the display of the surrounding image is stopped. , Even if the surrounding image is displayed, you can switch from the surrounding image to other navigation images, etc., by a manual switch.
The display image desired by the driver can always be displayed, which improves convenience.

Further, in the present invention according to claim 5, when the route guidance signal is input from the navigation device even when the surrounding image is displayed on the display, the display on the display can be switched to the navigation image. When the route guidance signal is output from the navigation device while the surrounding image is being displayed, the navigation image is automatically displayed. Both guidance and display of surrounding images can be used efficiently.

According to the sixth aspect of the present invention, there is provided a manually operated ambient image restoration switch, a route guidance signal is input from the navigation device, and the navigation image output from the navigation device is displayed on the display. Even when the ambient image restoration switch is operated, the display on the display can be switched to the ambient image, and the display image is automatically switched from the ambient image to the navigation image by the route guidance from the navigation device. Even in such a case, it is possible to switch to the surrounding image by a manual operation, so that both the route guidance by the navigation device and the display of the surrounding image can be used more efficiently.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a first exemplary embodiment of the present invention.

FIG. 2 is a flowchart illustrating the operation of the first embodiment.

FIG. 3 is a diagram illustrating an operation during traveling of the first embodiment.

FIG. 4 is a diagram illustrating an operation in the vicinity of an intersection according to the first embodiment.

FIG. 5 is a diagram showing a configuration of a second exemplary embodiment of the present invention.

FIG. 6 is a flowchart illustrating the operation of the second embodiment.

FIG. 7 is a diagram for explaining an operation during traveling of the second embodiment.

FIG. 8 is a diagram for explaining the operation when the navigation video selector switch of the second embodiment is on.

FIG. 9 is a diagram showing a configuration of a third exemplary embodiment of the present invention.

FIG. 10 is a flowchart illustrating a part of the operation of the third embodiment.

FIG. 11 is a diagram for explaining an operation when a route guidance signal is generated in the third embodiment.

FIG. 12 is a diagram showing a configuration of a fourth exemplary embodiment of the present invention.

FIG. 13 is a flowchart illustrating the operation of the fourth embodiment.

FIG. 14 is a diagram for explaining an operation during traveling of the fourth embodiment.

FIG. 15 is a diagram showing a configuration of a fifth exemplary embodiment of the present invention.

FIG. 16 is a flowchart illustrating the operation of the fifth embodiment.

FIG. 17 is a diagram illustrating an operation during traveling of the conventional example.

FIG. 18 is a diagram for explaining an operation during traveling of another conventional example.

[Explanation of symbols]

1 Imaging Device 2, 11 Navigation Device 3 Map Database 4 Vehicle Position Detection Device 5 Display 6 Monitor Point Setting Device 7, 10, 13, 16, 18 Control Device 8 Input Device 9 Navigation Video Changeover Switch 12 Surrounding Video Return Switch 15 Vehicle Speed Sensor 17 Surround image switch

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI H04N 7/18 H04N 7/18 V (56) Reference JP-A-9-304101 (JP, A) JP-A-10-30935 ( JP, A) JP 7-326000 (JP, A) JP 6-201391 (JP, A) JP 10-47978 (JP, A) JP 6-255423 (JP, A) JP Hei 5-40442 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G09B 29/00-29/14 B60R 1/00 B60R 11/02 G01C 21/00 G08G 1/0969 H04N 7/18

Claims (6)

(57) [Claims] 1. A travel route on map data is selected on the basis of an image pickup device attached to a vehicle for capturing a surrounding image, a vehicle position detection device for detecting the position of the vehicle, and the position and destination of the vehicle. A navigation device, a display arranged near the driver's seat of the vehicle for switching and displaying surrounding images and other images captured by the image capturing device, and a monitor point setting device for setting monitor points on the travel route of the map data. , At the first distance before the monitor point, the display on the display is switched to the surrounding image, and at the second distance after passing the monitor point, the display on the display is switched to the other image, and at the first distance before the monitor point. If the distance between the relevant monitor point and the next monitor point is less than a predetermined value after switching to the surrounding image at the distance of A display device for a vehicle, comprising: 2. A travel route on map data is selected on the basis of an image pickup device attached to a vehicle for capturing a surrounding image, a vehicle position detection device for detecting the position of the vehicle, and the position and destination of the vehicle. A navigation device, a display arranged near the driver's seat of the vehicle for switching and displaying the surrounding image captured by the image capturing device with other images, a vehicle speed sensor for measuring the traveling vehicle speed of the host vehicle, and a travel route for map data. Within the first distance before the monitor point and the monitor point setting device for setting the monitor point above, when the traveling vehicle speed is less than or equal to a predetermined value, the display on the display is the surrounding image, and when it is greater than the predetermined value, the display on the display is displayed. While switching to another image, after passing the monitor point, when the traveling speed becomes higher than the predetermined value, only switching to another image is allowed,
Further, when the distance from the relevant monitor point to the next monitor point is less than a predetermined value, if the surrounding image is displayed when the relevant monitor point is passed, the surrounding distance is reached up to the first distance before the next monitor point. A vehicular display device comprising a control device that continues to display an image. 3. A travel route on the map data is selected on the basis of an image pickup device attached to a vehicle for capturing a surrounding image, a vehicle position detection device for detecting the position of the vehicle, and the position and destination of the vehicle. A navigation device, a display arranged near the driver's seat of the vehicle for switching between the surrounding image captured by the image capturing device and another image, a vehicle speed sensor for measuring the traveling vehicle speed of the vehicle, and a travel route for map data. A monitor point setting device for setting the upper monitor point, a manually operated surrounding image changeover switch, and when the surrounding image changeover switch is operated when the traveling vehicle speed is equal to or lower than a predetermined value, the display on the display is the surrounding image, When the surrounding image change switch is operated again while the surrounding image is displayed, or when the traveling vehicle speed becomes higher than a predetermined value When the distance between the monitor point that has just passed and the next monitor point is less than or equal to a predetermined value when the surrounding image is displayed, the surrounding image change switch to the next monitor point is displayed. A display device for a vehicle, comprising a control device that continues to display a surrounding image if is not operated. 4. The control device includes a changeover switch which is connected to the control device and which is manually operated. The control device, when the changeover switch is turned on even when a surrounding image is displayed on the display, The vehicle display device according to claim 1, 2 or 3, wherein the display of the surrounding image is stopped. 5. The navigation device outputs a navigation video signal and a route guidance signal to a control device, and the control device controls the route from the navigation device even when a surrounding image is displayed on the display. The vehicle display device according to claim 1, wherein the display on the display is switched to a navigation image when an induction signal is input. 6. A navigation image return switch connected to the control device and manually operated, wherein the control device receives a route guidance signal from the navigation device and outputs a navigation image output from the navigation device. 6. The vehicle display device according to claim 5, wherein the display on the display is switched to the surrounding image when the surrounding image restoration switch is operated even while displaying on the display.