JPH0935188A - Communication equipment for searching route - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a driver to recognize the route of another vehicle during the traveling of plural vehicles and estimate driver's own traveling place by searching a route from the position of a driver's own vehicle up to a specified destination and transmitting the searched result to another vehicle to display it. SOLUTION: A road map and the position of a driver's own vehicle are displayed on a display means 108 and then a destination inputted by a destination input means 102 and the positions of other vehicles are displayed. Then a route search selecting means 109 is operated to drive a route searching means 105, a route to be searched is selected and the searched route is displayed on the displayed map. Which searched route is to be transmitted to another vehicle is selected, the selected searched route data are transmitted to the other vehicle by a searched route transmitting means 106, a searched route receiving means 107 displays the searched route on a display means 108 based upon the received data. In the case of informing the other vehicle of a route up to the destination, a searched route transmission selecting means 110 is driven to transmit the searched route to the other vehicle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling position display device for displaying the current position of an automobile or the like on a display device together with a map, and more particularly, a route search communication device for searching a route to a destination and transmitting the searched route to another vehicle. Regarding

[0002]

2. Description of the Related Art FIG. 5 is a block diagram showing a schematic configuration of a vehicle-mounted route search display device.

In FIG. 5, reference numeral 1 denotes a direction sensor, which uses a geomagnetic sensor for detecting the absolute running direction of the vehicle and a vibration gyro for detecting the relative running direction of the vehicle. Reference numeral 2 is a distance sensor that generates a pulse according to the number of rotations of the wheel, and 3 is various sensor signals such as an ON / OFF signal of a brake switch and a parking switch, and a power supply voltage monitoring signal. 4 is a sensor signal processing unit for processing sensor signals from the direction sensor 1 and the like, and 5 is a GPS (Global Positionin).
This GPS receiver 5 determines the position (latitude, lightness) of the reception point by receiving and calculating radio waves transmitted from a plurality of satellites. Reference numeral 6 denotes a CD-ROM drive, and this CD-ROM drive 6 reads map data from a CD-ROM 7 in which map data is stored. Reference numeral 8 denotes a display / operation unit installed in the passenger compartment. The display / operation unit 8 is provided on a liquid crystal display 8A for displaying a map and the current traveling position and direction of the automobile, and is provided in front of the liquid crystal display 8A. Consisting of a touch panel 8B and a touch panel 8B
Is a switch for instructing enlargement / reduction of the displayed map, a switch for instructing route search, a liquid crystal display 8
A switch for selecting a destination from the place names displayed in A, a switch for entering the address of the destination, a switch for moving in the direction that specifies the displayed map, a switch for indicating the position of another vehicle, a search It is equipped with an instruction to send a route.

Reference numeral 19 denotes another vehicle information receiving section for receiving information such as the current location, destination, searched route, message transmitted from another vehicle, and 20 information for the own vehicle position, destination, searched route, message, etc. Is a vehicle information transmission unit that transmits the information to another vehicle. Reference numeral 9 denotes an apparatus main body, and the apparatus main body 9 is installed in a trunk room or the like.

Next, the structure of the apparatus body 9 will be described.
Reference numeral 10 denotes a CPU (central processing unit) for performing various calculations, 11
Is a ROM (read only memory) in which various calculation programs executed by the CPU 10 are stored, and 12 is data from the azimuth sensor, distance sensor 2, GPS receiver 5, CD-ROM drive 6, position information receiving section 19 and the like and CP.
A memory (DRA
M) and 13 are backup memories (SRAM) for holding necessary data even when the power supply to the apparatus main body 9 is stopped, and 14 is a pattern such as characters and symbols displayed on the liquid crystal display 8A. A stored memory (kanji / font ROM), 15 is an image processor for forming a display image based on map data, current position data of the vehicle, etc. 16 is map data generated by the image processor 15, current position Data and Kanji / Font ROM1
A memory (VRAM) for storing the image data to be displayed on the liquid crystal display 8A by synthesizing the kanji / fonts such as the town name and the road name output from 4, and 17 is an RGB conversion for converting the output data of the VRAM 16 into a color signal. The RGB color conversion circuit 17 outputs the converted color signal to the liquid crystal display 8A. 18 is a communication interface.

FIG. 6 shows a format of data stored in the CD-ROM 7. In FIG. 6, 21 is a disk label, 22 is a drawing parameter, 23 is drawing leaf management information, and 24 is a drawing leaf. Background data, character data, road data, etc. are stored in this drawing leaf, The data for each unit map obtained by dividing the topographic map by latitude and longitude is stored. The map leaf is set from a map leaf that roughly describes a wide area to a map leaf that describes a narrow area in detail. Each map leaf is composed of map display levels A, B, and C that describe the same area. Map display level A,
As for B and C, B is described in more detail than A and C is described in more detail than B.

Each of the map display levels A, B and C is composed of map display level management information and a plurality of units. The unit describes a divided area obtained by dividing the area of each map display level into a plurality of areas, and each unit includes a unit header, a character layer, a background layer, a road layer, an option layer, and the like. The character layer stores place names, road names, facility names, etc. displayed on the map, the background layer stores data for drawing roads, facilities, and the like, and the road layer is shown in FIG. As described above, data about coordinate points (nodes) and lines (links) that describe roads including intersections, for example, node numbers of nodes, latitude, longitude, link numbers of links, link distances, and the like are stored.

In FIG. 7, circles (∘) indicate nodes, and lines between the nodes indicate links. In addition, black circles (●) indicate intersection nodes.

The data stored in the road layer is not directly involved in the map display but is used as road network information such as map matching.

In FIG. 6, reference numeral 25 is route search data. This route search data 25 is recorded for each layer from layer 0 for a narrow area to layer n for a wide area. . The search data of each layer is composed of node connection data 26, assumed link transit time (link cost) data 27, and route display data 28.

As shown in FIG. 8, the node connection data 26 is data indicating which node each of the nodes a to g, x, and y is connected to. For example, for the node c, the nodes a and d. , F, y. The link cost data 27 indicates the link cost of the link between the nodes as shown in FIG. 8. For example, the link cost of the link between the node a and the node c is “5”, and It shows that the link cost of the link between a and the node d is “20”. The link cost is obtained from link cost = link distance / set speed, and the set speed is set according to the road type and road width. The route display data 28 is recorded with data for displaying the route selected by the route search on the display map.

In FIG. 5, the output of the azimuth sensor 1 and the output of the distance sensor 2 are sent to the CPU 10 via the sensor processing unit 4.
Sent to The CPU 10 calculates the current position of the vehicle and obtains the latitude and longitude of the current position. Further, the current position is corrected based on the data from the GPS receiver 5.

On the basis of the present position thus obtained, the map data of the unit corresponding to the present position is recorded on the CD-R.
The map data is read from the CD-ROM 7 by the OM drive 6, and the map data is stored in the memory 12 (DRAM) via the communication interface 18. A part of the map data stored in the DRAM 12 is read by the CPU 10, converted into image data by the image processor 15 and written in the image memory 16 (VRAM). At this time, D
A character code is added to the map data read from the RAM 12.
When the symbol code is included, the pattern corresponding to these character code and symbol code is Kanji / font ROM1.
4 is read. The image data stored in the image memory 16 is converted into color signals by the RGB conversion circuit 17 and sent to the liquid crystal display 8A, and a map within a predetermined range centering on the current position, characters such as place names, symbols such as schools are displayed. . Further, the current position displayed on the liquid crystal display 8A is sequentially changed based on the traveling speed and the traveling azimuth which are sequentially obtained as the automobile travels.

FIG. 9 is a flow chart for explaining the map display operation of the vehicle position and the other vehicle position in the conventional example.

In FIG. 9, in step S1, the display map data is read from the CD-ROM 7, and in step S2.
In step S4, the read map data is converted into drawing data to be displayed on the liquid crystal display 8A.
At 3, the map is drawn on the liquid crystal display 8A based on the drawing data. In step S4, the road network data recorded in the road layer is read from the CD-ROM 7, and in the next step S5, the position and azimuth of the vehicle are determined based on the road network data and the current position data calculated by the CPU 10. Decide, step S
At 6, the vehicle mark is displayed on the map displayed on the liquid crystal display 8A.

In the next step S7, it is determined whether or not the position of the other vehicle is displayed. If it is determined that the position of the other vehicle is displayed, the other vehicle information receiving unit 19 is determined in step S8.
Calculates the position of another vehicle from the information from. The determination of the other vehicle position display in step S7 is performed by the touch panel 8 of the display device 8.
It is determined whether or not the other vehicle position display switch of B is operated. In the next step S9, it is determined whether or not the other vehicle position exists on the map displayed on the display 8A. If it is determined that the other vehicle position exists, the process proceeds to step S10, and the other vehicle mark is displayed on the map. To do.

FIG. 10 shows a conventional route search operation. When the route search switch on the touch panel 8B is operated, the route search process is executed.

First, as shown in FIG. 10, step S1
At 1, the destination is set. In the next step S12, it is determined whether or not to start the route search. This determination is made based on whether or not the route search switch on the touch panel 8B of the display device 8 is operated. If it is determined in step S12 that the route search switch has been operated, the process proceeds to the next step S13 to perform route search. This route search
As shown in FIG. 5, the origin node (current position node) x
To the destination node y, the link costs of all the routes are added, and the route with the lowest link cost is selected. In the case of FIG. 5, the links x → a → c → d → f → g.
→ Total link cost of y (10 + 5 + 5 + 5 + 5 + 5 =
35) is the smallest, so the link x → a → c → d →
A route connecting f → g → y is selected.

In step S14, the route selected in step S13 of FIG. 10 is displayed in red, for example, on the map displayed on the liquid crystal display 8A.

FIG. 11 shows the destination setting operation in step S11 of FIG.

In step S21, the other vehicle information receiving section 19
If it is determined that the destination is transmitted from the other vehicle side, the process proceeds to step S22, and the destination is calculated from the information of the other vehicle information receiving unit 19. .

If it is determined in step S21 that the destination is not transmitted from the other vehicle, step S2
Proceed to 3 and select whether to set the destination on the vehicle side. In step S23, if it is selected to set on the vehicle side, the process proceeds to step S24, and the destination is input. The destination can be input, for example, by inputting the address of the destination or the liquid crystal display 8A.
It is done by specifying the point on the map displayed in. In the next step S25, the destination determined in step S22 or step S24 is displayed on the display map of the liquid crystal display 8A.

FIG. 12 shows a display example of the display screen of the conventional example. In the above-mentioned conventional example, as shown in FIG. 12, for example, while traveling with two cars, the own vehicle mark 33 and the other vehicle mark 34 are displayed on the display map of the A vehicle side, or the destination 35 is input to identify the vehicle. Perform a route search from the vehicle position 33 to the destination 35. The searched route 36 can be displayed on the map.

On the B side, the own vehicle mark 38 and the other vehicle mark 37 are displayed in the same manner as the A side, and the destination information 39 from the other vehicle obtained from the other vehicle information receiving section 19 is displayed on the map. It is also possible to search for a route from the vehicle position 38 to the destination 39 and display the searched route 40 on the display map.

However, in the above-mentioned conventional example, since it is not possible to know the searched route searched by the other vehicle, it is not possible to know what route the other vehicle is aiming for at the destination.
Further, when the vehicle A side does not have a route search function or the vehicle B side has an excellent route search function, the current position 38 and the destination 39 are transmitted from the vehicle A side to the vehicle B side through the own vehicle information transmitting unit 20.
Is transmitted, and the route search is performed on the side of vehicle B, and the search route 4
Even if 1 is obtained, the result cannot be known on the side of car A.

[0026]

As described above, in the conventional example, while the plural vehicles are traveling toward the destination, the search route of the other vehicles is not known. I can't know if I aim for it. for that reason,
When the other vehicle position information becomes unreceivable, it is difficult to guess where the other vehicle is traveling. Further, even if the other vehicle can perform a route search from the vehicle position to the destination, the search result cannot be obtained.

The first invention of the present invention is to solve the above-mentioned problems of the conventional example, in which a destination is set, a route from the vehicle position is searched, and the result is transmitted to another vehicle. An object is to provide a route search communication device that displays a searched route on a map of a vehicle.

A second invention of the present invention is to search a route from another vehicle position by setting a destination, transmit the result to the other vehicle, and display the searched route on the map of the other vehicle. An object is to provide a communication device.

In the third aspect of the present invention, it is possible to select whether or not to search a route from the own vehicle position to the destination and from another vehicle position to the destination, and a search route from the own vehicle position. ,
Another object of the present invention is to provide a route search communication device capable of selecting whether or not to transmit a search route from another vehicle position.

[0030]

The first invention of the present invention is as follows:
In order to achieve the above object, a vehicle position detecting means for detecting a vehicle position, a storage means for storing road map data, a destination input means for inputting a destination, and a vehicle position detecting means Position information transmitting means for transmitting the detected vehicle position and the destination input by the destination input means to another vehicle, position information receiving means for receiving position information and destination information from another vehicle, Route search means for searching a route from the vehicle position detected by the vehicle position detection means to the destination input by the destination input means or the destination obtained from the position information receiving means, and the route search means Search route transmitting means for transmitting the search route searched for in another vehicle, a search route receiving means for receiving a search route from another vehicle, a road map read from the storage means, and the own vehicle position detecting means. The vehicle position detected by The other vehicle position obtained by the position information receiving means, the searched route searched by the route searching means, and the display means for displaying the searched route obtained by the searched route receiving means are provided. Is.

A second invention of the present invention is a vehicle position detecting means for detecting a vehicle position, a storage means for storing road map data, a destination input means for inputting a destination, and the vehicle. Position information transmitting means for transmitting the vehicle position detected by the position detecting means and the destination input by the destination input means to another vehicle, and position information receiving for receiving position information and destination information from the other vehicle Means, route search means for searching a route from the other vehicle position obtained from the position information receiving means to a destination input by the destination input means or a destination obtained from the position information receiving means, and the route A search route transmitting unit that transmits the search route searched by the searching unit to another vehicle, a search route receiving unit that receives a search route from another vehicle, a road map read from the storage unit, and the own vehicle position. Self detected by the detection means A position, another vehicle position obtained by the position information receiving means, a search route searched by the route searching means, and a display means for displaying the search route obtained by the search route receiving means. To do.

A third invention of the present invention is a route search selecting means for selecting whether or not to search a route from the own vehicle position to the destination and from another vehicle position to the destination, the own vehicle position and other It is characterized by comprising a search route transmission selecting means for selecting whether or not to transmit the search route from the vehicle position.

[0033]

According to the first aspect of the present invention, when the destination is specified by the destination input means or the position information receiving means, the route searching means determines the vehicle position. The route from is searched, the search result is transmitted to the other vehicle by the search route transmitting means, and the searched route can be displayed on the display means of the other vehicle.

According to the second aspect of the present invention, when the destination is specified by the destination input means or the position information receiving means, the route searching means searches for a route from another vehicle position, and the searched route transmitting means. Thus, the search result is transmitted to the other vehicle, and the searched route can be displayed on the display means of the other vehicle.

According to the third aspect of the present invention, the route search selecting means selects whether or not to search the route from the own vehicle position and the route from the other vehicle position, and the search route transmission selecting means Whether or not to transmit the search route from the own vehicle position and the search route from the other vehicle position is selected.

[0036]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a functional block showing the overall configuration of the route search communication device according to the present invention.

In FIG. 1, 100 is a vehicle position detecting means for detecting the vehicle position corresponding to the direction sensor 1, distance sensor 2 and GPS receiver 5 shown in FIG. 5, and 101 is the CD-ROM drive 6 shown in FIG. 5, a storage means for storing road map data corresponding to the CD-ROM 7 including a destination, a destination input means for inputting a destination corresponding to the touch panel 8B of the display 8A shown in FIG. 5, and a vehicle position detecting means 103. Positional information transmitting means for transmitting the vehicle position detected by 100 and the destination input by the destination inputting means 102 to another vehicle, and 104 is a positional information receiving means for receiving positional information and destination information from the other vehicle. , 105 designates the purpose input means 10 based on the vehicle position detected by the vehicle position detecting means 100.
Route search means for searching for a destination or a route to the destination obtained from the position information receiving means 104 input in 2
Reference numeral 6 is a search route transmitting means for transmitting the search route searched by the route searching means 105 to another vehicle, 107 is a search route receiving means for receiving a search route from another vehicle, and 108 is a storage means 10.
The display means (corresponding to the display 8A in FIG. 5) for displaying the road map read out from No. 1, the own vehicle position, the other vehicle position, the searched route searched and the searched route obtained by the searched route receiving means 104, respectively. is there. Further, 109 is a route search selection means for selecting whether or not to search a route from the own vehicle position to the destination and from another vehicle position to the destination. The route search selection means 109 is the touch panel shown in FIG. 8
B. Further, 110 is a search route transmission selecting means for selecting whether or not to transmit a search route from the own vehicle position and the other vehicle position, and is composed of the touch panel 8B shown in FIG.

Next, the communication operation for route search in the present embodiment configured as described above will be described with reference to FIGS.

FIG. 2 is a flow chart showing the processing procedure of the route search communication in this embodiment. The map display operation in step S31 and the destination setting operation in step S32 are the conventional examples shown in FIGS. 9 and 11, respectively. Is the same as.

First, in step S31, when it is desired to display the road map and the own vehicle position on the display means 108 corresponding to the display 8A of FIG. 5 and display the other vehicle position, the destination input means 102, that is, FIG. The other vehicle position display switch is operated to display the other vehicle position. In step S32, the destination is set. When setting the destination, there are cases where the destination is specified by another vehicle and cases where the destination is set by the own vehicle.

In the next step S33, the route search selecting means 109 is operated to operate the route searching means 105 to select a route to be searched. Here, the route search selection means 109, that is, whether the route to the destination and the position of the own vehicle is searched, the route to the destination and the position of the other vehicle, or both are searched, or not. 5 is determined by operating the route search switch on the touch panel 8B. When the search is selected in step S33, the process proceeds to step S34 and the route search is performed. The route search method is performed in the same manner as step S13 in FIG. 10 of the conventional example. However, when a plurality of routes are searched, the departure point node in FIG. 8 is set by the number of routes to be searched, and the route search is performed a plurality of times.

When the route search is completed, the route searched in step S34 is displayed in step S36 on the display map of the display means 108 corresponding to the liquid crystal display 8A in FIG. At this time, each search route is displayed in a different color so that the plurality of search routes can be distinguished. In the next step S36, which of the searched routes searched in step S35 is to be transmitted to another vehicle is selected. This selection is determined by operating the search route transmission selection switch of the touch panel 8B of FIG. 5 corresponding to the search route transmission selection means 110. Then, in step S37, the searched route data selected in step S36 is transmitted to the other vehicle by the searched route transmitting means 106. The search path at this time is represented, for example, in FIG. 8 by a set of ordered nodes {x, a, c, d, f, g, y}. Since these nodes are linked by a link, if only the set of nodes is transmitted, the receiving side can display the search route in a form of connecting the received nodes. Therefore, a set of latitude and longitude information of a node is used as transmission data and is transmitted in the same manner as the current location information and destination information.

In the search route receiving means 107, step S
In 38, the search route data searched in step S34 is received, and in the next step S39, the search route is displayed on the display 8A of FIG. 5 corresponding to the display means 108 based on the received data. Since the received data is a set of point position information having latitude and longitude information, the search route can be displayed on the display map in such a way that the points are connected in order from the current position according to the road shape. This time,
A method of displaying the searched route after all the searched route data are received in step S38, or a method of displaying the searched route in step S39 every time a certain amount of searched route data is received can be considered.

Now, this operation will be described with reference to the maps shown in FIGS. This operation is performed when a plurality of vehicles can communicate with each other, but here, for simplification, two vehicles A,
6 shows an embodiment in a state in which B can communicate.
FIG. 3A shows step S3 of FIG. 2 for both cars A and B.
The search route 2 from the own vehicle position and the other vehicle position, and from the own vehicle position to the destination through the process from 1 to step S35
9 shows a state in which 9 and 30 are displayed. In this state, in order to inform the other vehicle of the route to go to the destination, the searched route transmission selecting means 11
The search route transmission selection switch of the touch panel 8B of FIG. 5 corresponding to 0 is operated to transmit the search route to another vehicle. A
When this operation is performed for both the car and the car B, the search route 30 'for car B is displayed on the side of car A and the search route 29' for car A is displayed on the side of car B as shown in FIG. 3B. .

When it is desired to know the position of the own vehicle and the search route to the destination by using the route search function of another vehicle, for example, B
FIG. 4 shows a case where the vehicle wants to perform a route search using the route search function of vehicle A.

As shown in FIG. 4A, when the destination 31 is transmitted from the vehicle B to the vehicle A, the vehicle A performs a route search from the current position of the vehicle B to the destination 31. When the search route 32 is obtained, the vehicle A transmits the search route 32 to the vehicle B.

On the other hand, car B transmits destination 31 and then car A
After the route search on the vehicle side is completed, the searched route is received from the vehicle A side, and the searched route 3 is displayed on the displayed map as shown in FIG. 4B.
Display 2 '. In FIG. 4, when the destination is set to the A vehicle side, the route search is performed on the A vehicle side in the same manner as the above example except that the destination 31 is set on the A vehicle side, and the search route is set to the B vehicle side. Send to.

As described above, according to the present embodiment, when it is desired to inform the other vehicle of the searched route, the searched route transmission selecting means 1 is used.
By operating 10 the searched route can be transmitted to another vehicle. Further, when the other vehicle is requested to perform the route search, only the own vehicle position and the destination, or only the own vehicle position is transmitted from the own vehicle information transmitting unit to the other vehicle and the other vehicle side performs the route search. After that, by having the search result transmitted, the search route can be known through the other vehicle information receiving unit. In the future, when dynamic conditions such as traffic information and past driving data are incorporated into the route search method and it develops into something with even greater flexibility, the effectiveness of having other vehicles perform route searches Is expected to improve.

[0050]

As is apparent from the above-described embodiment, the present invention makes it possible to prevent the other vehicles from passing through the other vehicle information receiving section while traveling toward the destination by a plurality of vehicles. Since the search route is known, it is possible to know what route another vehicle is aiming for at the destination, and even if other vehicle position information can be received, guess where the other vehicle is traveling be able to.

According to the second aspect of the present invention,
Since the route search function to the destination can be performed using the route search function of another vehicle, the route search of the other vehicle side is performed when the own vehicle side does not have the route search function or when the other vehicle side route search function is excellent. A function can be used to obtain a better search path.

According to the invention of claim 3 of the present invention,
The route searching means can search only the necessary route from the own vehicle position and the other vehicle position to the destination, and the search route transmission selecting means can transmit only the required search route. Therefore, the unnecessary search route is not displayed on the display screen, and the display screen can be easily viewed.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing an overall configuration of a route search communication device according to an embodiment of the present invention.

FIG. 2 is a flowchart of a search route communication operation in this embodiment.

FIG. 3 is a display diagram showing a display example of a display screen in the present embodiment.

FIG. 4 is a display diagram showing a display example of a display screen in the present embodiment.

FIG. 5 is a schematic block diagram showing a conventional route search communication device.

FIG. 6 is a block diagram showing the format of a CD-ROM.

FIG. 7 is a configuration diagram of road data stored in a CD-ROM.

FIG. 8 is a block diagram of road data showing a route search method.

FIG. 9 is a flowchart of a map display operation in a conventional example.

FIG. 10 is a flowchart of a route setting operation in a conventional example.

FIG. 11 is a flowchart of destination setting in the conventional example.

FIG. 12 is a display diagram showing a display example of a display screen in a conventional example.

[Explanation of symbols]

 1 Direction Sensor 2 Distance Sensor 5 GPS Receiver 6 CD-ROM Drive 7 CD-ROM 8 Display / Operating Section 8A Liquid Crystal Display 8B Touch Panel 9 Device Main Body 10 CPU 15 Image Processor 19 Other Vehicle Information Receiving Section 20 Own Vehicle Information Transmitting Section 25 Route Search data 26 Node connection data 27 Link cost data 28 Route display data 29 Search route 29 'Transmission search route 33 Own vehicle mark 34 Other vehicle mark 35 Destination 100 100 Own vehicle position detection means 101 Storage means 102 Destination input means 103 Position information Transmitting means 104 Position information receiving means 105 Route searching means 106 Search route transmitting means 107 Search route receiving means 108 Display means 109 Route search selecting means 110 Search route transmitting selecting means

Claims (3)

[Claims] 1. A vehicle position detecting means for detecting a vehicle position, a storage means for storing road map data, a destination inputting means for inputting a destination, and a vehicle position detecting means for detecting the vehicle position. A position information transmitting means for transmitting the vehicle position and the destination input by the destination input means to another vehicle, and a position information receiving means for receiving the position information and the destination information from the other vehicle,
Route search means for searching a route from the vehicle position detected by the vehicle position detection means to the destination input by the destination input means or the destination obtained from the position information receiving means, and the route search Means for transmitting the searched route searched by the means to another vehicle, searched route receiving means for receiving the searched route from the other vehicle, road map read from the storage means, and the own vehicle position detection Display means for displaying the own vehicle position detected by the means, the position of the other vehicle obtained by the position information receiving means, the searched route searched by the route searching means, and the searched route obtained by the searched route receiving means. A route search communication device comprising: 2. A vehicle position detecting means for detecting a vehicle position, a storage means for storing road map data, a destination inputting means for inputting a destination, and a vehicle position detecting means for detecting the vehicle position. A position information transmitting means for transmitting the vehicle position and the destination input by the destination input means to another vehicle, and a position information receiving means for receiving the position information and the destination information from the other vehicle,
A route search means for searching a route from the other vehicle position obtained from the position information receiving means to a destination input by the destination input means or a destination obtained from the position information receiving means; and the route searching means. The search route transmission means for transmitting the searched search route to another vehicle, the search route receiving means for receiving the search route from the other vehicle, the road map read from the storage means and the own vehicle position detection means. A detected vehicle position; another vehicle position obtained by the position information receiving means; a searched route searched by the route searching means; and a display means for displaying the searched route obtained by the searched route receiving means. A route search communication device. 3. A route search selecting means for selecting whether or not to search a route from the own vehicle position to the destination and another vehicle position to the destination, and a search route from the own vehicle position and the other vehicle position. 3. The route search communication device according to claim 1, further comprising search route transmission selection means for selecting whether or not to transmit.