JP5064891B2 - Car navigation system - Google Patents

Description

  The present invention relates to an in-vehicle navigation device, and more particularly to an in-vehicle navigation device suitable for guiding a host vehicle from a current location to a destination along a recommended route to the destination.

  Conventionally, in-vehicle navigation devices search for a recommended route that satisfies a search condition for a recommended route to a destination set in advance by the user, and guide the vehicle from the current location to the destination along the searched recommended route. Navigation was done.

  Such an in-vehicle navigation device has a function of setting an avoidance road, which is a road that should be avoided from being included in the recommended route, as one of the recommended route search conditions.

  According to the in-vehicle navigation device having a function of setting this type of avoidance road, it is possible to search for a recommended route that avoids the set avoidance road and use it for guiding the host vehicle.

Japanese Patent Laid-Open No. 9-119844

  However, conventionally, avoidance roads have been set by selecting a desired area on the map displayed on the display by a method such as dragging. Therefore, only desired roads are individually selected and set as avoidance roads. I couldn't.

  In addition, some roads that are desired to be avoided, for example, have a user's desire regarding weather conditions that are desired to be avoided only on snowy days. Could not set.

  Therefore, the present invention has been made in view of such points, and it is possible to easily set only a desired road as an avoidance road in consideration of weather conditions, and thus, the user's wishes are sufficiently reflected. An object of the present invention is to provide an in-vehicle navigation device capable of realizing the navigation performed.

  In order to achieve the above-described object, an in-vehicle navigation device according to the present invention is an in-vehicle navigation device that guides the host vehicle from a current location to a destination along a recommended route to the destination, and is included in the recommended route. An avoidance road setting means that can set an avoidance road that is a road that should be avoided as a node unit or a link unit and a recommended route to a destination are searched, and the avoidance road setting means is configured to search for the avoidance road. When a road is set, as a condition for performing the recommended route search means formed to search for the recommended route that avoids the avoidance road, and the search for the recommended route that avoids the avoidance road A weather condition designating unit for designating weather conditions, and a weather information acquiring unit for acquiring weather information, wherein the avoidance road setting unit is When the weather condition is designated by the designation means, the avoidance road is configured to be set as a state with the designation of the weather condition, and the recommended route search means is configured to set the avoidance road When the avoidance road set by the means is accompanied by designation of the weather condition, the designated weather condition matches the weather information acquired by the weather information acquisition means Only, the recommended route for avoiding the avoidance road set by the avoidance road setting means is searched.

  In another vehicle-mounted navigation device according to the present invention, the weather information acquisition unit is configured to be able to update the weather information, and the recommended route search unit is configured such that the specified weather condition is the weather information. The recommended route for avoiding the avoidance road that matches the latest weather information acquired by the acquisition means is configured to dynamically search according to the change in the latest weather information. It is a feature.

  Furthermore, in another in-vehicle navigation device according to the present invention, the avoidance road setting means is formed so that a plurality of avoidance roads can be set, and the weather condition designating means is selective to the plurality of avoidance roads. It is characterized in that the weather conditions can be specified individually.

  Still further, another in-vehicle navigation device according to the present invention includes a traveling direction condition designating unit that designates a traveling direction condition of the host vehicle on the avoiding road as a condition for setting the avoiding road, The road setting means is configured to set the avoidance road so as to satisfy the condition of the traveling direction specified by the traveling direction condition specifying means.

  Further, in another on-vehicle navigation device according to the present invention, the avoidance road setting means is formed so that a plurality of avoidance roads can be set, and the traveling direction condition specifying means is individually provided for the plurality of avoidance roads. It is characterized in that the conditions of the traveling direction can be specified.

  Furthermore, another in-vehicle navigation device according to the present invention includes a gradient condition designating unit that designates a gradient condition of the avoidance road as a condition for setting the avoidance road, and the avoidance road setting unit includes When the gradient condition is specified by the gradient condition specifying means, the avoidance road is set so as to satisfy the gradient condition.

  Furthermore, in another in-vehicle navigation device according to the present invention, the avoidance road setting means is formed so that a plurality of avoidance roads can be set, and the gradient condition designating means is selective to the plurality of avoidance roads. In addition, it is characterized in that gradient conditions can be specified individually.

  In addition, another in-vehicle navigation device according to the present invention includes display processing means for performing processing for displaying a node or link corresponding to the avoidance road on a display unit in a state where the user can select the avoidance road, and the avoidance road setting means Is configured to set the avoidance road in accordance with a user operation for selecting a node or link corresponding to the avoidance road displayed by the display processing means.

  According to the vehicle-mounted navigation device according to the present invention, it is possible to select and set an avoidance road as a node unit or a link unit, and a condition for performing a search for a recommended route in consideration of the set avoidance road As the recommended route considering the set avoidance road can be searched only when the weather condition designated in advance matches the acquired weather information, the desired route can be obtained while considering the weather condition. Only a road can be easily set as an avoidance road, and as a result, navigation reflecting the user's wishes can be performed.

  In addition, according to another vehicle-mounted navigation device according to the present invention, when searching for a recommended route in consideration of an avoidance road, a dynamic route search can be performed using the latest weather information. It is possible to perform a search for a recommended route in consideration of an avoidance road that is more suitable for the user's desire.

  Furthermore, according to another vehicle-mounted navigation device according to the present invention, a plurality of avoidance roads can be set as a state in which weather conditions are selectively and individually designated for these, so that a user related to the weather It is possible to search for a recommended route in consideration of an avoidance road that is more suitable for the user's wish.

  Furthermore, according to another vehicle-mounted navigation device according to the present invention, it is possible to set an avoidance road that also considers the condition of the direction of travel, so a recommendation that considers an avoidance road that meets the user's wishes regarding the direction of travel A route search can be performed.

  In addition, according to another vehicle-mounted navigation device according to the present invention, a plurality of avoidance roads can be set as a state in which the conditions for the traveling direction are individually specified for these roads. It is possible to perform a search for a recommended route in consideration of an avoidance road that is more suitable for hope.

  Furthermore, according to another vehicle-mounted navigation device according to the present invention, it is possible to set an avoidance road in consideration of a gradient condition, and therefore, a recommended route in consideration of an avoidance road that meets a user's desire regarding the gradient of the road Can be searched.

  Furthermore, according to another vehicle-mounted navigation device according to the present invention, a plurality of avoidance roads can be set as a state in which a gradient condition is selectively and individually designated for these roads. It is possible to search for a recommended route in consideration of avoidance roads that are more suitable for the user's wishes.

  Further, according to another in-vehicle navigation device according to the present invention, a node or a link corresponding to an avoidance road can be displayed as a state that can be selected by the user, so selection of an avoidance road as a node unit or a link unit is possible. In addition, the setting can be performed more simply.

  Hereinafter, an embodiment of an in-vehicle navigation device according to the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the in-vehicle navigation device 1 according to the present embodiment is roughly divided into a navigation main unit 2, a map reading device 3 connected to the navigation main unit 2, an input operation unit 5, and a GPS receiver 6. The vehicle includes an autonomous navigation sensor 7, a display 8 as a display unit, a speaker 9, and a weather information acquisition unit 11 as weather information acquisition means.

  The input operation unit 5 may be a remote controller, a touch panel of the display 8, a rotary or linear encoder, or the like.

  In addition, the weather information acquisition unit 11 continuously receives and acquires weather information such as an Internet connection means that periodically accesses a radio receiver and a Web site that provides weather information (hereinafter referred to as weather information). Any device that can be updated may be used.

  The map reading device 3 is equipped with a storage medium 12 such as a hard disk, and the storage medium 12 stores map data used for executing the functions of the in-vehicle navigation device 1. Map data is used to execute road data and background data used to execute the map display function and route guidance function, route calculation data used to execute the route search function, and search functions such as destinations and facilities. Search data.

  The navigation main unit 2 will be described in detail. The navigation main unit 2 includes a host vehicle position calculation unit 15. A GPS receiver 6 and an autonomous navigation sensor 7 are provided on the input side of the host vehicle position calculation unit 15. Each is connected.

  The GPS receiver 6 is configured to output information including the trajectory and time received from the GPS satellite to the own vehicle position calculation unit 15. The own vehicle position calculation part 15 calculates the own vehicle position as an absolute coordinate based on the information output from the GPS receiver 6 (satellite navigation).

  The autonomous navigation sensor 7 detects an angular velocity, a vehicle speed, and the like of the host vehicle, and outputs a detection result to the host vehicle position calculation unit 15. The own vehicle position calculation unit 15 calculates the own vehicle position as a relative change from the previous own vehicle position based on the detection result output from the autonomous navigation sensor 7 (autonomous navigation).

  The own vehicle position calculation unit 15 calculates the map by correcting the own vehicle position to the position on the corresponding road in the map data when the own vehicle position calculated by satellite navigation or autonomous navigation is not on the road in the map data. Processing is to be performed.

  A map reading control unit 16 is connected to the own vehicle position calculation unit 15 and the input operation unit 5, and the map reading device 3 described above is connected to the map reading control unit 16.

  The map readout control unit 16 is input with the calculation result of the vehicle position calculation unit 15. Then, the map reading control unit 16 outputs a request for reading the vehicle position calculated by the vehicle position calculating unit 15 and the map data around the vehicle position to the map reading device 3. Further, the map readout control unit 16 outputs a request for reading out map data at a point designated by the operation of the input operation unit 5 and its surroundings to the map readout device 3. The map reading device 3 reads map data corresponding to the reading request from the map reading control unit 16 from the storage medium 12.

  The navigation main unit 2 has a map buffer 18 connected to the map reading device 3, and the map data read from the storage medium 12 by the map reading device 3 is input to the map buffer 18 temporarily. It is designed to be stored.

  A map drawing unit 19 is connected to the map buffer 18, and map data stored in the map buffer 18 is input to the map drawing unit 19. Based on the map data input from the map buffer 18, the map drawing unit 19 maps the vehicle position and its surroundings, and points specified by the user by the user's operation using the input operation unit 5 and its surroundings. The map drawing data is generated.

  A display processing unit 20 is connected between the map drawing unit 19 and the display 8, and map drawing data generated by the map drawing unit 19 is input to the display processing unit 20. ing. The display processing unit 20 displays a map image corresponding to the map drawing data input from the map drawing unit 19 on the display 8.

  A vehicle position drawing unit 21 is connected between the vehicle position calculation unit 15 and the display processing unit 20, and the vehicle position drawing unit 21 includes the vehicle position calculation unit 15. Information on the vehicle position is input. The own vehicle position drawing unit 21 generates own vehicle position drawing data for displaying a mark of the own vehicle position based on the information on the own vehicle position input from the own vehicle position calculation unit 15. . The vehicle position drawing data generated by the vehicle position drawing unit 21 is input to the display processing unit 20. Then, the display processing unit 20 superimposes and displays the vehicle position mark corresponding to the input vehicle position drawing data on the map displayed on the display 8.

  An operation screen drawing unit 22 is connected to the input side of the display processing unit 20. The operation screen drawing unit 22 searches for a menu screen, an operation screen for setting a destination, and a recommended route to the destination. Generate drawing data of various operation screens that can be operated by the user (input operation) using the input operation unit 5 such as an operation screen used for inputting conditions (including avoidance road settings), and the generated drawing data Is output to the display processing unit 20. The display processing unit 20 displays an operation screen corresponding to the drawing data of the operation screen output by the operation screen drawing unit 22 on the display 8.

  A destination setting unit 23 is connected to the output side of the input operation unit 5, and the destination setting unit 23 is used to set a destination for an operation screen for destination setting from the input operation unit 5. The result of the user's input operation is input. The destination setting unit 23 sets the destination according to the result of the input operation on the destination setting operation screen.

  Further, in the present embodiment, the navigation main unit 2 has a recommended route calculation unit 24 as a recommended route search means. The recommended route calculation unit 24 includes a weather information acquisition unit 11, a vehicle position calculation unit. 15, a map read control unit 16, a map buffer 18, and a destination setting unit 23 are connected to each other.

  The recommended route calculation unit 24 performs route calculation for calculating (searching) a recommended route from the departure point to the destination set by the destination setting unit 23. At the time of this route calculation, the recommended route calculation unit 24 causes the map reading device 3 to read out the route calculation data in the map data stored in the storage medium 12 via the map reading control unit 16 and read the route calculation data. The route calculation data is used to calculate a recommended route to a destination that satisfies the recommended route search condition input by the user's operation.

  A guide image drawing unit 26 is connected to the output side of the recommended route calculation unit 24 and the map buffer 18 and to the input side of the display processing unit 20. Based on the recommended route calculated by the recommended route calculation unit 24, the guide image drawing unit 26 generates drawing data of a guide image such as a superimposed display image of the recommended route on the map and an enlarged intersection image. The drawing data of the guide image is output to the display processing unit 20. The map data stored in the map buffer 18 is used for generating the drawing data of the guide image as needed. The display processing unit 20 displays a guide image corresponding to the drawing data of the guide image output from the guide image drawing unit 26 on the display 8. As a result, route guidance using the guidance image is performed.

  A voice guide unit 27 is connected between the recommended route calculation unit 24 and the speaker 9, and the voice guide unit 27 guides intersection left and right turns based on the recommended route calculated by the recommended route calculation unit 24. Guidance voice data for voice guidance is generated, and the generated guidance voice data is output to the speaker 9. The speaker 9 performs route guidance using the guidance voice by outputting the guidance voice data generated by the voice guidance unit 27 as a voice.

  In the present embodiment, a means for simply setting only a desired road as an avoidance road that is avoided from being included in the recommended route is taken in consideration of weather conditions. .

  That is, in the present embodiment, the operation screen drawing unit 22 functions as a display processing unit, and the user can select a node corresponding to the avoidance road in order to realize the user's operation of selecting the avoidance road as a node unit. The status is displayed. Specifically, the operation screen drawing unit 22 generates drawing data of an operation screen (hereinafter referred to as a node selection operation screen) on which a user operation for selecting a node corresponding to the avoidance road is possible. The drawing data of the generated node selection operation screen is output to the display processing unit 20. The display processing unit 20 displays a node selection operation screen corresponding to the drawing data of the node selection operation screen output from the operation screen drawing unit 22 on the display 8.

  This node selection operation screen is not limited to a screen that can select a node by only one screen, and is composed of a plurality of screens that are sequentially switched according to a user operation. The node may be selected in stages according to the above.

  In addition, an avoidance road setting unit 28 serving as an avoidance road setting unit is connected between the input operation unit 5 and the recommended route calculation unit 24, and the avoidance road setting unit 28 includes an input operation unit 5, The result of a user operation on the node selection operation screen is input.

  The avoidance road setting unit 28 sets an avoidance road according to the result of the user's operation on the node selection operation screen.

  Furthermore, in the present embodiment, the operation screen drawing unit 22 is an operation screen for designating weather conditions (hereinafter referred to as a weather condition designation screen) as a condition for searching for a recommended route that avoids the avoidance road. ) Is generated, and the generated drawing data of the weather condition designation screen is output to the display processing unit 20. The display processing unit 20 displays a weather condition designation screen corresponding to the weather condition designation screen output from the operation screen drawing unit 22 on the display 8.

  Furthermore, a weather condition designation unit 29 as a weather condition designation unit is connected between the input operation unit 5 and the avoidance road setting unit 28, and the weather condition designation unit 29 is connected with the input operation unit 5. The result of the user's operation on the weather condition designation screen is input.

  The weather condition designation unit 29 designates the weather condition corresponding to the result of the user's operation on the weather condition designation screen to the avoidance road setting unit 28.

  Furthermore, when the weather condition is specified by the weather condition specifying unit 29, the avoidance road setting unit 28 sets the avoidance road as a state with the specification of the weather condition.

  The avoidance road setting unit 28 outputs the avoidance road setting result set in this way to the recommended route calculation unit 24.

  When the avoidance road set by the avoidance road setting unit 28 is accompanied by designation of the weather condition, the recommended route calculation unit 24 acquires the specified weather condition by the weather information acquisition unit 11. It is compared with the latest weather information (hereinafter referred to as “corresponding region latest weather information”) for the region corresponding to the avoidance road with the specified weather condition.

  Then, as a result of the comparison, the recommended route calculation unit 24 selects a recommended route for avoiding the avoidance road set by the avoidance road setting unit 28 only when the designated weather condition matches the latest weather information of the corresponding region. It comes to calculate.

  On the other hand, when the avoidance road set by the avoidance road setting unit 28 is not accompanied by designation of the weather condition, the recommended route calculation unit 24 recommends avoiding the avoidance road set without taking the weather into consideration. The route is calculated.

  Thereby, for example, when there is a user's desire to avoid only a specific road only on a snowy day, only the road desired by the user is considered as an avoidance road while considering the weather desired by the user. It is possible to easily set, and it is possible to perform a search for a recommended route and a route guidance that avoid the set avoidance road.

  Here, since the relevant area latest weather information acquired by the weather information acquisition unit 11 is sequentially updated, the avoidance road in which the designated weather condition initially matches the relevant area latest weather information is the avoidance road. Depending on the change in the weather in the area corresponding to, it may be assumed that the designated weather condition does not match the latest weather information in the corresponding area. Conversely, if the avoidance road whose initial specified weather conditions did not match the latest weather information for the relevant area, depending on the change in the weather in the area corresponding to this avoidance road, Is likely to match the latest weather information for the area.

  Therefore, in order to flexibly cope with such a change in the relevant area latest weather information, in the present embodiment, the recommended route calculation unit 24 avoids such that the specified weather condition matches the relevant area latest weather information. The recommended route for avoiding the set road (that is, the set avoidance road) is dynamically searched according to the change in the latest weather information of the corresponding area.

  In addition, when searching for a dynamic recommended route, dynamic route guidance (so-called dynamic route guidance) in which the guidance image and the guidance voice change in accordance with the change in the recommended route at the time of route guidance. Is to be done.

  Thus, it is possible to search for a recommended route and avoid route guidance that avoids a road that is set to avoid depending on the user's request regarding the weather.

  In a more preferred embodiment, the avoidance road setting unit 28 is formed so that a plurality of avoidance roads can be set in accordance with a user operation on the node selection operation screen, and the weather condition designating unit 29 In accordance with the user's operation on the designation screen, the weather conditions can be selectively and individually designated for a plurality of avoidance roads set by the avoidance road setting unit 28.

  In this way, a plurality of avoidance roads can be set as a state in which weather conditions are selectively and individually specified for these avoidance roads, so that avoidance of avoidance roads further adapted to the user's wishes regarding the weather can be avoided. The recommended route to be searched and route guidance can be performed.

  In addition to the above configuration, in the present embodiment, the operation screen drawing unit 22 further specifies an operation screen (hereinafter referred to as a condition for setting the avoidance road) as a condition for setting the avoidance road. (Referred to as a traveling direction condition designation screen) is generated, and the generated drawing data of the traveling direction condition designation screen is output to the display processing unit 20. The display processing unit 20 displays a traveling direction condition designation screen corresponding to the traveling direction condition designation screen output from the operation screen drawing unit 22 on the display 8.

  Further, a traveling direction condition designating unit 31 as a traveling direction condition designating unit is connected between the input operation unit 5 and the avoidance road setting unit 28. The traveling direction condition designating unit 31 includes an input operation unit. 5, the result of the user's operation on the traveling direction condition designation screen is input.

  Then, the traveling direction condition designating unit 31 designates a traveling direction condition corresponding to the result of the user's operation on the traveling direction condition designating screen to the avoidance road setting unit 28.

  In addition, as an example of the conditions of the traveling direction, for example, for the road between the first intersection and the second intersection, the traveling direction from the first intersection side to the second intersection side, the second intersection A traveling direction from the side toward the first intersection or a bidirectional direction is conceivable.

  The avoidance road setting unit 28 sets an avoidance road that satisfies the condition of the traveling direction specified by the traveling direction condition specifying unit 31. Specifically, a traveling direction from the first intersection side to the second intersection side is set as a traveling direction condition for the road between the first intersection and the second intersection described above. In some cases, the avoidance road is a road from the first intersection to the second intersection, and the road from the second intersection to the first intersection is not the avoidance road.

  As a result, the avoidance road can be set in consideration of the conditions of the driving direction in addition to the weather conditions. For example, according to the user's desire to avoid only a specific uphill only on a snowy day Search for recommended routes and route guidance can also be performed.

  As a more preferred embodiment, as described above, the avoidance road setting unit 28 is formed so that a plurality of avoidance roads can be set in accordance with the user's operation on the node selection operation screen, and then the traveling direction The condition designating unit 31 is formed so that a traveling direction condition can be individually designated for a plurality of avoidance roads set by the avoidance road setting unit 28 in accordance with a user operation on the travel direction condition designation screen. To do.

  In this way, a plurality of avoidance roads can be set in a state in which the conditions of the traveling direction are individually specified for these, so the avoidance-set roads further adapted to the user's desire regarding the traveling direction It is possible to search for a recommended route and avoid route guidance.

  As a more preferred embodiment, although not shown in the drawing, as a condition for setting an avoidance road, a gradient condition specifying means for specifying a gradient condition of the avoidance road is provided, and the avoidance road setting unit 28 is configured to have a gradient condition. When the slope condition is designated by the designation means, an avoidance road that satisfies the slope condition is set. The gradient condition designating unit may be any unit that designates a gradient condition in accordance with a user operation on the operation screen using the input operation unit 5. In addition, as a condition of the gradient, for example, a threshold value of a gradient (inclination angle) for setting as an avoidance road such as + 10 ° or more (in the case of an upward gradient), -10 ° or less (in the case of a downward gradient), etc. . In this way, when the slope condition can be specified, roads that do not satisfy the slope condition even if the weather condition and the traveling direction condition are satisfied are excluded from the avoidance road. Become. In addition, the recommended route calculation unit 24 determines whether or not the pre-setting avoidance road on which the node is selected satisfies the specified gradient condition based on the road gradient data in the map data. be able to.

  In this way, it is possible to set avoidance roads that also take into account the conditions of the slope, so that, for example, a user who wants to avoid only roads having an upward slope of a predetermined inclination angle or more only on snowy days It is also possible to search for a recommended route and guide the route according to the user's request.

  Further, in the case where the slope condition is formed so as to be specified as described above, as described above, the avoidance road setting unit 28 sets a plurality of avoidance roads in accordance with the user's operation on the node selection operation screen. The gradient condition designating unit selectively and individually grades the plurality of avoidance roads set by the avoidance road setting unit 28 in accordance with the operation using the input operation unit 5. It is formed so that the conditions can be specified.

  In this way, it is possible to set a plurality of avoidance roads as a state in which a gradient condition is selectively and individually designated for these roads, so that the avoidance setting is further adapted to the user's desire regarding the gradient. It is possible to search for a recommended route that avoids the road and to guide the route.

  Next, the main operation of this embodiment will be described.

  In this embodiment, for the sake of convenience, the navigation operation assuming the United States by the in-vehicle navigation device 1 will be described.

  In the present embodiment, the user sets a destination by an operation using the input operation unit 5 and then shifts to setting an avoidance road as a route search condition for searching for a recommended route to the destination. 2, the operation screen drawing unit 22 displays a street selection screen 32 as shown in FIG. 2 on the display 8 via the display processing unit 20 as a first stage node selection operation screen.

  The street selection screen 32 has a plurality of selection buttons 32A, 32B, and 32C in which names of a plurality of streets (three streets A to C in FIG. 2) are respectively described. It is possible to select the selection buttons 32A, 32B, and 32C corresponding to any street from among the 32B and 32C by an operation using the input operation unit 5 (for example, a touch operation on the touch panel).

  When the user performs an operation for selecting the selection button 32A corresponding to the street A on the street selection screen 32, the street A is selected.

  Next, the operation screen drawing unit 22 displays a first intersection selection screen 33 as shown in FIG. 3 on the display 8 via the display processing unit 20 as a second stage node selection operation screen.

  The first intersection selection screen 33 has a plurality of selection buttons 33a, 33b, and 33c in which names of a plurality of intersections (intersections a to c in FIG. 3) existing on the street A are respectively described. Among the plurality of selection buttons 33a, 33b, 33c, it is possible to select the selection buttons 33a, 33b, 33c corresponding to an arbitrary intersection by an operation using the input operation unit 5.

  Then, when the user performs an operation for selecting the selection button 33a corresponding to the intersection a on the first intersection selection screen 33, the intersection a is selected as the first intersection serving as one end of the avoidance road. Is done.

  Next, the operation screen drawing unit 22 displays an intersection road selection screen 34 as shown in FIG. 4 on the display 8 via the display processing unit 20 as a third stage node selection operation screen.

  This intersection road selection screen 34 has a plurality of selection buttons 34A and 34X each describing the names of roads (street A and avenue X in FIG. 4) intersecting on the intersection a. Arbitrary selection buttons 34A and 34X of 34A and 34X can be selected by an operation using the input operation unit 5.

  When the user performs an operation for selecting the street A on the intersection road selection screen 34, the street A is selected as a road including the avoidance road.

  Next, the operation screen drawing unit 22 displays a second intersection selection screen 35 as shown in FIG. 5 on the display 8 via the display processing unit 20 as a fourth stage node selection operation screen.

  The second intersection selection screen 35 includes a plurality of selection buttons 33b each including names of intersections (intersections b and c in FIG. 5) other than the intersection a (first intersection) existing on the street A. 33c, and the selection buttons 33b and 33c corresponding to an arbitrary intersection can be selected from the selection buttons 33b and 33c by the user's operation using the input operation unit 5. Yes.

  If the avenue X is selected on the above-described intersection road selection screen 34, the second intersection selection screen 35 is an operation screen for selecting an intersection other than the intersection a existing on the avenue X. It becomes.

  When the user performs an operation for selecting the selection button 33b corresponding to the intersection b on the second intersection selection screen 35 shown in FIG. 5, the intersection b becomes the second end of the avoidance road. Is selected as the intersection.

  Next, the operation screen drawing unit 22 displays a traveling direction condition designation screen 37 as shown in FIG. 6 on the display 8 via the display processing unit 20.

  The traveling direction condition designation screen 37 displays the traveling direction condition for the road in the section between the intersection a and the intersection b in the street A selected using the node selection operation screens 32, 33, 34, and 35. Three traveling direction selection buttons 37a, 37b, and 37c for selection are provided. One of the three travel direction selection buttons 37a, 37b, and 37c is a travel direction selection button 37a that serves as a selection button for setting a direction from the intersection a side to the intersection b side as a travel direction condition. Yes. One traveling direction selection button 37b of the other two traveling direction selection buttons 37b and 37c is a selection button for setting a direction from the intersection b side to the intersection a side as a condition of the traveling direction. . The remaining one traveling direction selection button 37c is a selection button for setting both the direction from the intersection a side to the intersection b side and the direction from the intersection b side to the intersection a side as conditions for the traveling direction. 37c. These three traveling direction selection buttons 37a, 37b, and 37c can be selected by a user operation using the input operation unit 5.

  The traveling direction condition designation screen 37 shows a road image showing a road in a section between the intersection a and the intersection b in the street A selected using the node selection operation screens 32, 33, 34, and 35. 38 is deformed together with an image 39 of a road (Avenue X) intersecting with intersection a and an image 40 of a road (Avenue Y) intersecting with intersection b.

  When the user performs an operation for selecting a desired traveling direction selection button 37a, 37b, 37c using the input operation unit 5 on the traveling direction condition designation screen 37, the selected traveling direction selection is performed. The traveling direction corresponding to the buttons 37a, 37b, 37c is designated as the traveling direction condition.

  At this time, the operation screen drawing unit 22 acquires node information related to the road in the section between the intersection a and the intersection b in the street A from the map data stored in the storage medium 12. When the node information includes traffic regulation information indicating that the road is one-way, the traveling direction selection button that does not correspond to the traveling direction indicated in the traffic regulation information is not displayed or shaded, etc. It is also possible to make the selection impossible.

  Next, the operation screen drawing unit 22 displays a weather condition designation screen 42 as shown in FIG. 7 on the display 8 via the display processing unit 20.

  This weather condition designation screen 42 designates a weather condition non-designation selection button 43 for selecting that a recommended route is always searched in consideration of an avoidance road without designating a weather condition, and a weather condition. A weather condition designation selection button 45 for selecting that a search for a recommended route that avoids the avoidance road is performed only when the latest weather information of the corresponding area that matches the designated weather condition is obtained. Yes. The weather condition non-designation selection button 43 and the weather condition designation selection button 45 can be selected by a user operation using the input operation unit 5.

  Here, when the weather condition designation selection button 45 is selected on such a weather condition designation screen 42, the operation screen drawing unit 22 displays one of the weather condition designation screens 42 below the weather condition designation selection button 45. The weather condition selection button group 46 constituting the part is displayed.

  The weather condition selection button group 46 will be described in detail. As shown in FIG. 8, the weather condition selection button group 46 includes a plurality of weather condition character display items (for example, cloudy weather) arranged in the horizontal direction of FIG. , Fog, etc.) and a plurality of weather conditions describing an illustration of the weather corresponding to any combination of character notation items (for example, thunder, strong wind, etc.) of the plurality of weather conditions arranged in the vertical direction in FIG. The selection buttons 47 are formed in a matrix so as to correspond to the character notation items.

  Such a weather condition selection button group 46 can select any one or a plurality of weather condition selection buttons 47 among them by a user's operation using the input operation unit 5.

  When the user selects a desired weather condition selection button 47 using the input operation unit 5, the weather condition corresponding to the selected button 47 is specified by the weather condition specifying unit 29.

  Returning to FIG. 7, the weather condition designation screen 42 has an intersection a in the street A selected using the node selection operation screens 32, 33, 34, and 35, as in the traveling direction condition designation screen 37. A road image 38 showing a road in a section between the vehicle and the intersection b is deformed and displayed along with road images 39 and 40 intersecting with the intersections a and b, respectively.

  As described above, the road between the intersections a and b heading from the intersection a side to the intersection b side has an intersection, that is, a node with the weather condition designated using the weather condition designation screen 42. An avoidance road is set as the minimum unit (node unit) of the avoidance road selection operation.

  Next, after the avoidance road is set in this way, the recommended route calculation unit 24 calculates a recommended route to the destination.

  At this time, the recommended route calculation unit 24 compares the weather condition specified by the weather condition specifying unit 29 with the latest local weather information acquired by the weather information acquisition unit 11, and only when both match. Then, a recommended route in consideration of the avoidance road set by the avoidance road setting unit 28 is calculated. At this time, if a plurality of weather conditions are specified by selection of the plurality of weather condition selection buttons 47, if any one of the weather conditions matches the latest weather information of the corresponding region, A recommended route that avoids the avoidance road is calculated.

  The recommended route calculated in this way is used for route guidance via the guide image and the guide voice.

  As described above, in the present embodiment, the avoidance road setting unit 28 can select and set the avoidance road as a node unit. In addition, the recommended route calculation unit 24 sets the avoidance road setting unit 28 only when the weather condition specified in advance by the weather condition specifying unit 29 matches the weather information acquired by the weather information acquisition unit 11. It is possible to search for a recommended route in consideration of the avoided road. Furthermore, it is possible to set an avoidance road that satisfies the condition of the traveling direction designated by the traveling direction condition designating unit 31.

  As a result, it is possible to easily set only a desired road as an avoidance road while taking into consideration the weather condition and the traveling direction condition, and as a result, navigation that fully reflects the user's wishes can be performed.

  In addition, this invention is not limited to embodiment mentioned above, A various change is possible as needed.

  For example, the node selection operation screens 32, 33, and 34 in the above-described embodiment are merely examples, and it is needless to say that modes other than these may be adopted.

  In the embodiment described above, the avoidance road is set as a node unit through the user's operation on the list-type operation screen such as the node selection operation screens 32, 33, 34, and 35. The present invention is not limited to such a configuration. For example, an avoidance road as a node unit in a map format is displayed on a map by displaying an image of an intersection as a selectable state by a user operation. May be selected. In addition, instead of selecting intersections, roads between intersections can be selected in a list format or map format so that links between intersections can be avoided as a minimum unit for avoidance road setting operations. You may form so that selection and setting of can be performed.

The block diagram which shows embodiment of the vehicle-mounted navigation apparatus which concerns on this invention The figure which shows a street selection screen in embodiment of the vehicle-mounted navigation apparatus which concerns on this invention. The figure which shows a 1st intersection selection screen in embodiment of the vehicle-mounted navigation apparatus which concerns on this invention. The figure which shows a crossing road selection screen in embodiment of the vehicle-mounted navigation apparatus which concerns on this invention. The figure which shows a 2nd intersection selection screen in embodiment of the vehicle-mounted navigation apparatus which concerns on this invention. The figure which shows the advancing direction condition designation screen in embodiment of the vehicle-mounted navigation apparatus which concerns on this invention. The figure which shows a weather condition designation | designated screen in embodiment of the vehicle-mounted navigation apparatus which concerns on this invention. The figure which shows a weather condition selection button group in embodiment of the vehicle-mounted navigation apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car navigation apparatus 11 Weather information acquisition part 24 Recommended route calculation part 28 Avoidance road setting part 29 Weather condition designation | designated part

Claims (8)

An in-vehicle navigation device that guides the host vehicle from the current location to the destination along a recommended route to the destination,
An avoidance road setting means capable of setting an avoidance road that is a road to be included in the recommended route as a node unit or a link unit;
A recommended route formed to search for a recommended route to a destination, and configured to search for the recommended route that avoids the avoidance road when the avoidance road is set by the avoidance road setting means. Search means;
As a condition for searching for the recommended route to avoid the avoidance road, a weather condition specifying means for specifying a weather condition;
With weather information acquisition means for acquiring weather information,
The avoidance road setting means is configured to set the avoidance road as a state with the designation of the weather condition when the weather condition is designated by the weather condition designation means.
In the case where the recommended route search means is that the avoidance road set by the avoidance road setting means is accompanied by designation of the weather condition, the designated weather condition is determined by the weather information acquisition means. It is formed to search for a recommended route that avoids the avoidance road set by the avoidance road setting means only when it matches the acquired weather information ,
The in-vehicle navigation device body includes a means for displaying a weather condition designation screen for designating weather conditions on the display unit,
The weather condition designating screen is a plurality of different textual notation items arranged along the horizontal direction of the screen, different from each other, arranged along the vertical direction of the screen, and different in the horizontal direction. A plurality of weather condition selection buttons in which illustrations of weather corresponding to arbitrary combinations with character notation items of a plurality of weather conditions different from each weather condition are described,
The in-vehicle navigation device, wherein the weather condition designation means is configured to designate a weather condition corresponding to the weather condition selection button selected on the weather condition designation screen . The weather information acquisition means is formed to be able to update the weather information,
The recommended route search means includes a recommended route for avoiding the avoidance road such that the specified weather condition matches the latest weather information acquired by the weather information acquisition means, and the latest weather information. The vehicle-mounted navigation device according to claim 1, wherein the vehicle-mounted navigation device is formed so as to dynamically search in accordance with a change in. The avoidance road setting means is formed to be able to set a plurality of avoidance roads,
The in-vehicle navigation device according to claim 1, wherein the weather condition designating unit is configured to be able to designate weather conditions selectively and individually for the plurality of avoidance roads. . As a condition for setting the avoidance road, a traveling direction condition specifying means for specifying a condition of the traveling direction of the host vehicle on the avoidance road,
The said avoidance road setting means is formed so that the said avoidance road which satisfies the conditions of the said advancing direction designated by the said advancing direction condition designation | designated means may be set. Car navigation system. The avoidance road setting means is formed to be able to set a plurality of avoidance roads,
The in-vehicle navigation device according to claim 4, wherein the traveling direction condition designating unit is configured to be able to individually specify a traveling direction condition for the plurality of avoidance roads. As a condition for setting the avoidance road, provided with a gradient condition designating means for designating a condition of the gradient of the avoidance road,
The avoidance road setting means is configured to set the avoidance road that satisfies the gradient condition when the gradient condition is specified by the gradient condition specifying means. The in-vehicle navigation device according to any one of claims 1 to 5. The avoidance road setting means is formed to be able to set a plurality of avoidance roads,
The in-vehicle navigation device according to claim 6, wherein the gradient condition designating unit is configured to be able to designate a gradient condition selectively and individually for the plurality of avoidance roads. Comprising a display processing unit that performs processing for displaying on the display unit a node or link corresponding to the avoidance road as selected ready,
The avoidance road setting means is configured to set the avoidance road according to a selection instruction of a node or link corresponding to the avoidance road displayed by the display processing means. The in-vehicle navigation device according to any one of claims 1 to 7.