JP2018025404A - Traffic information guide device and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a traffic information guide device and a computer program that can provide a user with information on the direction of travel of a movable body and a traffic flow in a guide route, the information being accurate and visually easily understandable.SOLUTION: A traffic information guide device acquires a guide route to a destination of a vehicle, acquires information specifying a traffic flow in the guide route, and displays a route image showing the guide route on a map image displayed on a liquid crystal display 15. On the displayed route image 51, patterns specifying the direction of travel of the vehicle and the traffic flow in the guide route are respectively drawn.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a traffic information guide device and a computer program that provide traffic information.

  Conventionally, various information terminals (hereinafter referred to as navigation devices, etc.) such as in-vehicle navigation devices, mobile phones, smartphones, tablet terminals, and personal computers use various storage devices for map information including information on road networks and facilities. It can be stored or acquired by downloading from a server or the like and provided to the user. Further, in a navigation device or the like, the current position of the user is specified by using a current position measurement system such as GPS, and is guided on a map, or a route to a destination set by the user is searched and guided. It was also done about.

  Furthermore, in a conventional navigation device or the like, not only the map image and the current position of the user are displayed, but also the traffic information such as a traffic jam situation displayed on the road and an accident occurring on the road is displayed in order to further improve the convenience for the user. It was also about providing. Various methods are conceivable as a method for providing traffic information. For example, Japanese Patent Application Laid-Open No. 2007-113937 discloses a map of arrows that are color-coded according to the degree of congestion as a means of indicating traffic jam information. A technique for displaying an image in parallel with a road is disclosed.

Japanese Patent Application Laid-Open No. 2007-11939 (5th page, FIG. 6)

  Here, in providing traffic information, there are many cases where the user is driving a vehicle, and it is important to provide accurate traffic information to the user quickly. However, in the technique described in Patent Document 1, the degree of congestion of the road on the road is indicated by the direction of the arrow and the display color, but it is difficult to visually understand the degree of congestion of the road in the traveling direction of the host vehicle. was there. That is, in general, traffic information is displayed not only on the traveling direction side of the host vehicle but also on the opposite lane side at the same time. For example, when arrows are concentrated, the information on the traveling direction side of the host vehicle is displayed. It is difficult to visually determine which direction the arrow is pointing, and as a result, it is also difficult to determine the degree of road congestion in the traveling direction of the host vehicle.

  The present invention has been made to solve the above-described conventional problems, and provides the user with easy-to-understand and accurate information on the moving direction and traffic flow of the moving body on the guide route. It is an object of the present invention to provide a traffic information guide device and a computer program that make it possible.

  In order to achieve the above object, a traffic information guide device according to the present invention includes a guide route acquisition means for acquiring a guide route to a destination of a moving body, and traffic flow information for acquiring information for specifying a traffic flow in the guide route. Acquisition means; and route display means for displaying a route image indicating the guide route on a map image displayed on a display device, wherein the route display means includes a traveling direction and traffic of the moving object on the guide route. A pattern for specifying a flow is drawn on the route image.

  The computer program according to the present invention is a program for guiding the traveling direction and traffic flow of a moving body on a road as traffic information. Specifically, the computer displays a guidance route acquisition means for acquiring a guidance route to the destination of the moving body, a traffic flow information acquisition means for acquiring information for specifying a traffic flow in the guidance route, and a display device. The route display means functions as route display means for displaying a route image indicating the guide route on the map image, and the route display means has a pattern for specifying the traveling direction and traffic flow of the moving body on the guide route. Drawing on the route image.

  According to the traffic information guide apparatus and computer program according to the present invention having the above-described configuration, it is easy to visually understand the contents of the traveling direction and traffic flow of the moving body on the guide route, and provide accurate information to the user. Is possible. In particular, even when there are many traffic congestion sections or when the traffic congestion sections are long, it is possible to guide the traveling direction of the moving body and the traffic flow on the guidance route, which is easier to understand visually than in the past.

It is the block diagram which showed the structure of the navigation apparatus which concerns on this embodiment. It is the figure which showed an example of current traffic information. It is the figure which showed an example of the determination method of a traffic congestion degree. It is the figure which showed an example of statistical traffic information. It is a flowchart of the traffic information guidance process program which concerns on this embodiment. It is the figure which showed the route image and pattern which are displayed on a map image. It is the figure which showed the driving guidance screen displayed on a liquid crystal display. It is the figure which showed the example which draws a different kind of pattern for every information source.

  Hereinafter, a traffic information guide device according to the present invention will be described in detail based on an embodiment embodied in a navigation device 1 with reference to the drawings. First, a schematic configuration of the navigation device 1 according to the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing a navigation device 1 according to this embodiment.

  As shown in FIG. 1, the navigation device 1 according to the present embodiment includes a current position detection unit 11 that detects a current position of a vehicle on which the navigation device 1 is mounted, a data recording unit 12 that records various data, A navigation ECU 13 that performs various arithmetic processes based on the input information, an operation unit 14 that receives operations from the user, a liquid crystal display 15 that displays a map and traffic information around the vehicle to the user, and route guidance Communication module that communicates between a speaker 16 that outputs voice guidance related to, a DVD drive 17 that reads a DVD as a storage medium, and an information center such as a probe center or a VICS (registered trademark: Vehicle Information and Communication System) center 18.

Below, each component which the navigation apparatus 1 has is demonstrated in order.
The current position detection unit 11 includes a GPS 21, a vehicle speed sensor 22, a steering sensor 23, a gyro sensor 24, and the like, and can detect the current vehicle position, direction, vehicle traveling speed, current time, and the like. . Here, in particular, the vehicle speed sensor 22 is a sensor for detecting a moving distance and a vehicle speed of the vehicle, generates a pulse according to the rotation of the driving wheel of the vehicle, and outputs a pulse signal to the navigation ECU 13. And navigation ECU13 calculates the rotational speed and moving distance of a driving wheel by counting the generated pulse. Note that the navigation device 1 does not have to include all the four types of sensors, and the navigation device 1 may include only one or more types of sensors.

  In addition, the data recording unit 12 reads a hard disk (not shown) as an external storage device and a recording medium, a map information DB 31 and a traffic information DB 32 recorded on the hard disk, a predetermined program, and the like, and stores predetermined data on the hard disk. And a recording head (not shown) as a driver for writing. The data recording unit 12 may include a memory card, an optical disk such as a CD or a DVD, instead of the hard disk. Moreover, map information DB31 and traffic information DB32 may be stored in an external server, and the navigation apparatus 1 may acquire by communication.

  Here, the map information DB 31 is, for example, link data 33 relating to roads (links), node data 34 relating to node points, search data 35 used for route search processing, facility data relating to facilities, and map display data for displaying a map. The storage means stores intersection data relating to each intersection, search data for searching for points, and the like.

  In addition, as the link data 33, for each link constituting the road, the width of the road to which the link belongs, the traveling direction, the gradient, the cant, the bank, the road surface state, the number of road lanes, the number of lanes that decrease The data representing the narrowed part, the level crossing, etc. is the data regarding the corner, the radius of curvature, the intersection, the T-junction, the entrance and the exit of the corner, the data indicating the downhill road, the uphill road, etc. regarding the road attribute However, regarding road types, in addition to general roads such as national roads, prefectural roads, and narrow streets, data representing toll roads such as highway automobile national roads, city highways, general toll roads, and toll bridges are recorded.

  The node data 34 includes actual road branch points (including intersections, T-junctions, etc.) and the coordinates (positions) of node points set for each road according to the radius of curvature, etc. Node attribute indicating whether a node is a node corresponding to an intersection, etc., a connection link number list that is a list of link numbers of links connected to the node, and an adjacency that is a list of node numbers of nodes adjacent to the node via the link Data relating to the node number list, the height (altitude) of each node point, and the like are recorded.

  Further, as the search data 35, various data used for route search processing for searching for a route from a departure place (for example, the current position of the vehicle) to a set destination as described later are recorded. Specifically, the cost of quantifying the appropriate degree as a route to an intersection (hereinafter referred to as an intersection cost), the cost of quantifying the appropriate degree as a route to a link constituting a road (hereinafter referred to as a link cost), etc. Cost calculation data used for calculating the search cost is stored.

  On the other hand, the traffic information DB 32 stores current traffic information 36 indicating the current traffic situation obtained from an external VICS center or probe center, statistical traffic information 37 that is statistical information obtained by statistically analyzing the history of the current traffic information 36, and the like. It is a storage means.

  Here, the current traffic information 36 corresponds to VICS information acquired by communication from the VICS center or probe information acquired by communication from the probe center, and as shown in FIG. It is information that identifies the section where the accident is, the section where the accident or construction is occurring. In addition, for the section where the traffic jam occurs, the traffic congestion degree is also acquired as information for specifying the speed of the traffic flow. The degree of traffic congestion is a parameter that indicates the degree of traffic congestion (speed of traffic flow) divided into multiple stages, and is based on the average vehicle speed and road type detected using a sensor installed on the road. The determination is made based on the threshold value set in. For example, as shown in FIG. 3, on a general road, “traffic congestion” occurs in a section where the average vehicle speed of the vehicle is less than 10 km / h, and “congestion” occurs in a section where the average vehicle speed of the vehicle is 10 km / h or more and less than 20 km / h. Sections with an average vehicle speed of 20 km / h or more are determined to be “vacant”. Further, the current traffic information 36 is acquired by being classified according to the traveling direction of the link. However, when only one traveling direction is associated with one link, it is not always necessary to classify the traveling direction. Further, the VICS center and the probe center distribute the latest traffic information to the navigation device 1 every predetermined time (for example, every 5 minutes).

  In addition, the statistical traffic information 37 is statistically processed by the VICS center, the probe center, other external centers, or the navigation device 1 for the current traffic information 36 stored at predetermined intervals (for example, one month or one year). This is traffic information that is generated by performing. Specifically, as shown in FIG. 4, it is information specifying the degree of congestion as the speed of traffic flow assumed for each link and each date and time (or day of the week). As a method for specifying the degree of traffic congestion, for example, for a time zone in which 80% or more is determined as “congested” in the statistical period, the traffic congestion level is identified as “congested” and 50% or more is determined as “congested” or “crowded”. The traffic congestion level can be specified as “congested” in the time zone, and “free” can be specified in the other time zones. Note that the statistical traffic information 37 is also identified by being classified according to the link traveling direction. However, when only one traveling direction is associated with one link, it is not always necessary to classify the traveling direction.

  On the other hand, the navigation ECU (Electronic Control Unit) 13 is an electronic control unit that controls the entire navigation device 1. The CPU 41 as an arithmetic device and a control device, and a working memory when the CPU 41 performs various arithmetic processes. Read out from the ROM 43 and the ROM 43 in which the RAM 42 storing the route data when the route is searched, the control program, and the traffic information guidance processing program (FIG. 5) described later are recorded. And an internal storage device such as a flash memory 44 for storing the program. The navigation ECU 13 has various means as processing algorithms. For example, the guide route acquisition unit acquires a guide route to a destination of a moving body (for example, a vehicle). The traffic flow information acquisition means acquires information for specifying the traffic flow on the guide route. The route display means displays a route image indicating the guide route on the map image displayed on the liquid crystal display 15.

  The operation unit 14 is operated when inputting a starting point as a travel start point and a destination as a travel end point, and has a plurality of operation switches (not shown) such as various keys and buttons. Then, the navigation ECU 13 performs control to execute various corresponding operations based on switch signals output by pressing the switches. The operation unit 14 may have a touch panel provided on the front surface of the liquid crystal display 15. Moreover, you may have a microphone and a speech recognition apparatus.

  The liquid crystal display 15 includes a map image including a road, traffic information, operation guidance, operation menu, key guidance, guidance route set in the navigation device 1, guidance information along the guidance route, news, weather forecast. , Time, mail, TV program, etc. are displayed. In place of the liquid crystal display 15, HUD or HMD may be used. In particular, in the present embodiment, when displaying a guide route, an image showing the guide route is displayed on the map image in a manner in which the traveling direction and traffic flow of the vehicle on the guide route can be specified as described later.

  Further, the speaker 16 outputs voice guidance for guiding traveling along the planned traveling route and traffic information guidance based on an instruction from the navigation ECU 13.

  The DVD drive 17 is a drive that can read data recorded on a recording medium such as a DVD or a CD. Based on the read data, music and video are reproduced, the map information DB 31 is updated, and the like. A card slot for reading / writing a memory card may be provided instead of the DVD drive 17.

  The communication module 18 is a communication device for receiving traffic information transmitted from the above-described traffic information center, such as a VICS center or a probe center, and corresponds to, for example, a mobile phone or DCM.

  Next, a traffic information guidance processing program executed in the navigation device 1 having the above configuration will be described with reference to FIG. FIG. 5 is a flowchart of the traffic information guidance processing program according to this embodiment. Here, the traffic information guidance processing program is a program that is executed after the ACC power supply (accessory power supply) of the vehicle is turned on, and stores a travel history of the vehicle. The program shown in the flowchart of FIG. 5 below is stored in the RAM 42 or ROM 43 provided in the navigation apparatus 1 and is executed by the CPU 41.

  In step (hereinafter abbreviated as S) 1 in the traffic information guidance processing program, the CPU 41 displays a map image on the liquid crystal display 15. The map image to be displayed may be a map image around the current position of the vehicle, or a map image of an arbitrary area designated by the user.

  Next, in S <b> 2, the CPU 41 obtains a guide route that is currently set in the navigation device 1. The guide route is a recommended route from the starting point to the destination set by the navigation device 1, and is searched using, for example, a known Dijkstra method. The navigation route 1 may be configured to search for the guidance route, or may be configured to be searched by an external server. Further, the departure point may be the current position of the user or an arbitrary point selected by the user (for example, home). On the other hand, the destination is set based on, for example, a user operation (for example, a registration point reading operation, facility search or selection operation) received in the operation unit 14.

  The following processing after S3 is carried out for each link, particularly for links included in the map image displayed on the liquid crystal display 15 among the links included in the guidance route acquired in S2. And after performing the process after S3 with respect to all the links used as object, the said traffic information guidance process program is complete | finished.

  First, in S <b> 3, the CPU 41 specifies the traveling direction of the vehicle on the processing target link when the vehicle travels along the guidance route based on the guidance route and link data set by the navigation device 1.

  Next, in S4, the CPU 41 acquires, from the traffic information DB 32, traffic information relating to the processing target link and the traveling direction of the vehicle specified in S3. The traffic information acquired in S4 includes at least information for specifying the flow speed of the traffic flow. In the present embodiment, the degree of congestion is particularly included. Further, as described above, the traffic information DB 32 stores the current traffic information 36, which is the current traffic information acquired from the VICS center and the probe center, and the statistical traffic information 37 calculated based on the statistical data. 2 and 4), the current traffic information 36 is basically acquired with respect to the link for which the current traffic information 36 can be acquired, and the statistical traffic information 37 is acquired for the link for which the current traffic information 36 cannot be acquired. However, only the current traffic information 36 may be acquired, or only the statistical traffic information 37 may be acquired.

  Subsequently, in S5, the CPU 41 determines whether the degree of congestion in the traveling direction of the link to be processed and specified in S3 is “congestion (that is, the flow speed of the traffic flow is less than the first threshold)”. Judge whether or not.

  Then, when it is determined that the degree of traffic congestion in the traveling direction of the link to be processed and the vehicle specified in S3 is “congestion (that is, the flow speed of the traffic flow is less than the first threshold)” (S5) : YES), the process proceeds to S6. On the other hand, it is determined that the degree of congestion in the traveling direction of the link to be processed and specified in S3 is other than “congestion (that is, the traffic flow speed is less than the first threshold)”. In the case (S5: NO), the process proceeds to S7.

  In S <b> 6, the CPU 41 draws a route image indicating the guide route for the section corresponding to the link to be processed on the map image displayed on the liquid crystal display 15. Here, FIG. 6 is a diagram showing an example of the route image 51 drawn on the map image. As shown in FIG. 6, on the route image 51, a pattern 52 that identifies the traveling direction of the vehicle and the traffic flow on the guide route is drawn.

  The pattern 52 has a wedge-shaped shape with a sharp tip, and is drawn so that the tip direction faces the traveling direction of the vehicle. Further, an animation in which the pattern 52 moves at a speed V corresponding to the speed of the traffic flow in the processing target link is also performed. For example, in S6, since the traffic flow at the processing target link is the slowest “traffic jam”, the moving speed V of the pattern 52 is also set to the slowest 5 mm / sec. In addition, the display colors of the route image 51 and the pattern 52 are also displayed in accordance with the flow speed of the traffic flow in the processing target link. For example, in S6, since the traffic flow at the processing target link is the slowest “traffic jam”, the display color of the route image 51 and the pattern 52 is red.

  On the other hand, in S7, the CPU 41 determines that the degree of congestion in the traveling direction of the link to be processed and specified in S3 is “congested (that is, the flow speed of the traffic flow is greater than or equal to the first threshold and less than the second threshold)”. It is determined whether or not.

  Then, it is determined that the degree of traffic congestion in the traveling direction of the link to be processed and specified in S3 is “congested (ie, the flow speed of the traffic flow is greater than or equal to the first threshold value and less than the second threshold value)”. If yes (S7: YES), the process proceeds to S8. On the other hand, when it is determined that the degree of congestion in the traveling direction of the link to be processed and specified in S3 is “vacant (that is, the flow speed of the traffic flow is greater than or equal to the second threshold)” In (S7: NO), the process proceeds to S9.

  In S <b> 8, the CPU 41 draws a route image indicating the guidance route for the section corresponding to the link to be processed on the map image displayed on the liquid crystal display 15 as in S <b> 6. However, in S8, since the traffic flow in the processing target link is moderate “congestion”, the movement speed V of the pattern 52 is also set to 10 mm / sec, which is faster than the congestion section. The display color of the route image 51 and the pattern 52 is yellow.

  On the other hand, in S9, the CPU 41 draws a route image indicating the guide route for the section corresponding to the link to be processed on the map image displayed on the liquid crystal display 15 as in S6 and S8. However, in S9, the flow of traffic flow in the processing target link is the “empty” that is the fastest, so the moving speed V of the pattern 52 is also set to 15 mm / sec, which is faster than the congested section. The display color of the route image 51 and the pattern 52 is blue.

  Then, when the processes of S3 to S9 are executed for all the target links, a route image 51 in which a pattern 52 is drawn along the guide route on the map image is finally displayed as shown in FIG. Will be.

  Here, FIG. 7 is a diagram showing a travel guidance screen 61 displayed on the liquid crystal display 15 of the navigation device 1. As shown in FIG. 7, the travel guidance screen 61 includes a map image 62 around the vehicle, a vehicle mark 63 indicating the current position of the vehicle, and a route image indicating the guide route currently set in the navigation device 1. 51 is displayed. In the route image 51, as described above, the pattern 52 for identifying the traveling direction of the vehicle and the traffic flow on the guide route is drawn, and the pattern 52 moves faster along the traveling direction of the vehicle in the section where the traffic flow is faster. An animated display is performed. As a result, the user can easily and quickly grasp the traveling direction of the vehicle and the traffic flow on the guidance route by visually recognizing the travel guidance screen 61.

  In addition, the movement of the pattern 52 may be interrupted or stopped for each connection portion of the section determined as “congested”, the section determined as “congested”, and the section determined as “empty” in the route image 51. Instead, the pattern 52 is drawn so as to move smoothly between the sections. For example, with respect to the location where the section determined to be “free” is connected to the section determined to be “crowded”, the movement speed of the pattern 52 is not switched from 15 mm / sec to 10 mm / sec in one step. The moving speed of the pattern 52 is gradually reduced from the front of the connection portion. Similarly, for a portion connected from a section determined as “congested” to a section determined as “congested”, the moving speed of the pattern 52 is gradually increased from before the connected portion.

  Further, in the guidance route, the route image 51 and the pattern 52 are deleted from the map image 62 at any time in order to reduce the processing load on the CPU 41 in the section where the vehicle has passed. Only the pattern 52 may be deleted.

  In the present embodiment, the current traffic information 36 and the statistical traffic information 37 exist as the traffic information from which the traffic flow is specified. However, different types of patterns 52 may be drawn depending on the information source. For example, as shown in FIG. 8, when the route image 51 and the pattern 52 are drawn based on the current traffic information 36, the wedge-shaped pattern 52 is drawn, and the route image 51 and the pattern 52 are drawn based on the statistical traffic information 37. When drawing, a trapezoidal pattern 52 is drawn.

  Furthermore, in the guide route, in the current traffic information 36 and the statistical traffic information 37, the traffic flow could not be specified for the section where the information for specifying the traffic flow could not be acquired. For the sake of illustration, the route image 51 is displayed in a different form from the other sections. For example, a gray route image 51 or a broken route image 51 is displayed.

  As described in detail above, the navigation device 1 and the computer program executed by the navigation device 1 according to the present embodiment acquire a guide route to the destination of the vehicle (S2) and specify the traffic flow in the guide route. Information is acquired (S3), and a route image indicating the guidance route is displayed on the map image displayed on the liquid crystal display 15 (S6, S8, S9), and the displayed route image 51 shows the vehicle traveling on the guidance route. Since the patterns for specifying the direction and the traffic flow are drawn, it is possible to visually understand the contents of the traveling direction of the vehicle and the traffic flow on the guide route and to provide accurate information to the user. In particular, even when there are many traffic congestion sections or when the traffic congestion sections are long, it is possible to guide the traveling direction of the vehicle and the traffic flow on the guidance route, which is easier to understand visually than in the past.

Note that the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the scope of the present invention.
For example, in the present embodiment, the traffic flow speed is indicated by the pattern 52 drawn on the route image 51, but the traffic flow density may be indicated. In that case, an animation for moving the pattern 52 at a speed corresponding to the density of the traffic flow is performed, and specifically, an animation for moving the pattern 52 faster in a section where the density of the traffic flow is lower.

  In this embodiment, the degree of traffic congestion is acquired as traffic information indicating the speed of traffic flow. However, traffic information indicating the speed of traffic flow other than the degree of traffic congestion is acquired, and based on the information. Then, the route image 51 and the pattern 52 may be drawn. For example, there are an average vehicle speed, an average travel time, and the like. Traffic information may be acquired by inter-vehicle communication other than distribution from the VICS center or probe center.

  In the present embodiment, the traffic flow speed is indicated by the moving speed V of the pattern 52 drawn on the route image 51. However, the traffic flow speed may be indicated by the interval between the patterns 52. . In this case, the interval between the patterns 52 is increased in the section where the traffic flow speed is higher. When the speed of the traffic flow is indicated by the arrangement interval of the patterns 52, the patterns 52 may be moved in the traveling direction of the vehicle or may not be moved.

  In addition to the navigation device, the present invention can be applied to various devices having a function of displaying a map image and traffic information. For example, the present invention can be applied to a mobile phone, a smartphone, a tablet terminal, a personal computer (hereinafter referred to as a mobile terminal). Further, the present invention can be applied to a system including a server and a mobile terminal. In that case, each step of the above-described traffic information guidance processing program (FIG. 5) may be implemented by either a server or a mobile terminal.

  Moreover, although the embodiment which actualized the traffic information guidance device according to the present invention has been described above, the traffic information guidance device can also have the following configuration, and in this case, the following effects can be obtained.

For example, the first configuration is as follows.
A guide route acquisition unit (41) for acquiring a guide route to a destination of a moving body, a traffic flow information acquisition unit (41) for acquiring information for specifying a traffic flow in the guide route, and a display device (15) Route display means (41) for displaying a route image (51) indicating the guide route on the displayed map image (62), wherein the route display means is the traveling direction of the moving body in the guide route A pattern (52) for specifying the traffic flow is drawn on the route image.
According to the traffic information guide apparatus having the above-described configuration, it is possible to provide the user with easy-to-understand and accurate information on the moving direction and traffic flow of the moving body on the guide route.

The second configuration is as follows.
The traffic flow information acquisition means (41) acquires the speed of the traffic flow in the guide route, and the route display means (41) draws a pattern for specifying the speed of the traffic flow in the guide route. To do.
According to the traffic information guide apparatus having the above configuration, it is possible to provide the user with easy-to-understand and accurate information on the speed of traffic flow especially on the guide route.

The third configuration is as follows.
The route display means (41) draws a pattern (52) that moves at a speed corresponding to the speed of the traffic flow in the guide route.
According to the traffic information guide device having the above configuration, the guide route is easy to understand visually by displaying the speed of the traffic flow in the guide route in correspondence with the moving speed of the pattern moving on the route image. It is possible to guide the speed of traffic flow in

The fourth configuration is as follows.
The route display means (41) draws a pattern (52) at intervals according to the speed of the traffic flow in the guide route.
According to the traffic information guide device having the above-described configuration, traffic on the guide route is visually easy to understand, particularly by displaying the flow speed of the traffic flow on the guide route in correspondence with the pattern arrangement interval on the route image. It is possible to guide the flow velocity.

The fifth configuration is as follows.
The route display means (41) is configured so that the route image (51) is different in form from other sections for the sections in which the traffic flow information acquisition means (41) cannot acquire the information specifying the traffic flow. Is displayed.
According to the traffic information guidance device having the above-described configuration, a section where traffic flow cannot be identified from the route image is displayed to the user by displaying the section for which information for identifying the traffic flow cannot be obtained, so that it can be distinguished from other sections. It can be easily grasped.

The sixth configuration is as follows.
There are a plurality of acquisition sources for acquiring information specifying traffic flow in the traffic flow information acquisition means (41), and the route display means (41) acquires information specifying traffic flow by the traffic flow information acquisition means. Different types of patterns are drawn for each acquired source.
According to the traffic information guide device having the above configuration, when there are a plurality of information sources specifying the traffic flow, the user can easily identify which information source the information specifying the displayed traffic flow is based on. It becomes possible to do.

The seventh configuration is as follows.
It has a position acquisition means (41) for acquiring the position of the moving body that is the guidance target of the guide route, and the route display means (41) has a pattern for a section through which the moving body passes in the guide route. Is deleted.
According to the traffic information guide device having the above-described configuration, the processing load of the CPU related to the drawing of the pattern is reduced by deleting the pattern in the section where the traveling direction of the moving body and the guidance of the traffic flow are no longer necessary. It becomes possible.

1 Navigation Device 15 Liquid Crystal Display 36 Current Traffic Information 37 Statistical Traffic Information 41 CPU
42 RAM
43 ROM
51 Route Image 52 Pattern 61 Driving Guide Screen 62 Map Image

Claims (8)

A guide route acquisition means for acquiring a guide route to the destination of the mobile body;
Traffic flow information acquisition means for acquiring information for identifying traffic flow in the guide route;
Route display means for displaying a route image indicating the guide route on a map image displayed on a display device;
The said route display means is a traffic information guidance apparatus which draws the pattern which specifies the advancing direction and traffic flow of the mobile body in the said guidance route on the said route image. The traffic flow information acquisition means acquires the speed of traffic flow in the guide route,
The traffic information guide device according to claim 1, wherein the route display unit draws a pattern for specifying a speed of a traffic flow in the guide route.   The traffic information guide device according to claim 2, wherein the route display unit draws a pattern that moves at a speed corresponding to a speed of a traffic flow in the guide route.   The traffic information guide device according to claim 2 or 3, wherein the route display means draws a pattern at intervals according to the flow speed of the traffic flow on the guide route.   The route display means displays the route image in a form different from other sections for sections in which the traffic flow information acquisition means cannot acquire information for identifying traffic flow. 4. The traffic information guidance device according to any one of 4. There are a plurality of acquisition sources for acquiring information identifying traffic flow in the traffic flow information acquisition means,
The traffic information guide device according to any one of claims 1 to 5, wherein the route display means draws a pattern of a different type for each acquisition source from which information for specifying traffic flow is acquired by the traffic flow information acquisition means. . Having a position acquisition means for acquiring the position of a mobile object to be guided on the guide route;
The traffic information guide device according to any one of claims 1 to 6, wherein the route display means deletes a pattern for a section through which the moving body passes in the guide route. Computer
A guide route acquisition means for acquiring a guide route to the destination of the mobile body;
Traffic flow information acquisition means for acquiring information for identifying traffic flow in the guide route;
A computer program for functioning as route display means for displaying a route image indicating the guide route on a map image displayed on a display device,
The said route display means is a computer program which draws the pattern which specifies the advancing direction and traffic flow of the moving body in the said guidance route on the said route image.

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