JP6221396B2 - Head-up display device - Google Patents

Description

  The present invention relates to a head-up display device that supports driving by projecting information such as an arrow indicating a traveling speed and a traveling direction onto a display unit and causing a driver to visually recognize the information.

  Conventionally, a part of the navigation information displayed on the navigation device is displayed in front of the driver's seat by the head-up display device, so that it is possible to guide the route even when the driver cannot afford to see the road map on the monitor. An information display device is known. For example, Patent Literature 1 discloses an information display device that displays information such as an arrow indicating a traveling speed and a traveling direction on an auxiliary display installed on a dashboard in front of the driver's seat.

JP 2010-127685 A

  The conventional information display device disclosed in Patent Document 1 has the following problems. That is, in this information display device, when the vehicle is traveling away from the intersection, the arrow indicating the traveling direction and the traveling speed are displayed side by side, and when the intersection approaches, the arrow is displayed above the arrow. Then, new information such as an arrow for guiding a recommended travel lane and an intersection name are sequentially added. In this case, since the display area is constant, by adding new information, a large amount of information is displayed at narrow intervals so as to be compressed vertically. Therefore, in the vicinity of the important intersection, the entire display becomes complicated, and it is not always easy to see for smooth route guidance. In particular, it is conceivable that the driver may be confused by simultaneously displaying an arrow indicating the direction of travel and an arrow guiding the recommended travel lane.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a head-up display device that is easier to see and can perform route guidance in a favorable manner.

In order to solve the above-mentioned problems, the applicant has conducted intensive studies. As a result, when performing route guidance with a head-up display device, if a large amount of information is displayed in a narrow range, the troublesomeness of the information separation occurs. We obtained the knowledge that good route guidance is hindered. In short, even if there is a small amount of information, finding that displaying it at an appropriate timing and in a manner that can draw the driver's attention eliminates the hassle of disposing information and is effective in guiding the route Got. The present invention is based on such knowledge. That is, the present invention is a head-up display device for guiding a route of a vehicle, and includes an information display including a horizontally long and substantially rectangular display unit standing in a driver's field of view from an upper surface of an instrument panel in front of a driver seat. Information acquisition means for acquiring means, vehicle speed information, and information on the route guidance calculated by a navigation device mounted on the vehicle, and causing the display section to display information based on the information acquired by the information acquisition means Information display control means, and the display unit includes the vehicle speed information, and traveling direction information including a single figure indicating a traveling direction at a target intersection that is an intersection within the guidance route and is the next turn. A plurality of driving lane information including a plurality of driving lanes, and a recommended driving lane information including a graphic capable of identifying the recommended driving lane among the driving lanes. It is capable of displaying predetermined information selected from the information, the information display control means, when the remaining distance to the local point from the target intersection becomes the first set value, the traveling direction information on the display unit Without displaying, the recommended travel lane information is displayed in the upper area of the display unit, the vehicle speed information is displayed in the lower area, and the remaining distance is set to a second set value shorter than the first set value. In other words, without displaying the recommended travel lane information on the display unit, the traveling direction information is displayed in the left and right one side region of the display unit , and the vehicle speed information is displayed in the left and right side region .

  In this head-up display device, recommended travel lane information and vehicle speed information are displayed at a position that is reasonably away from the target intersection, and when approaching the target intersection, the recommended travel lane information disappears, and instead of this recommended travel lane information. The traveling direction information is displayed on the screen. According to this configuration, the driving direction information is not additionally displayed with respect to the recommended driving lane information, but the route guidance information itself is switched from the recommended driving lane information to the driving direction information. It becomes easy to call attention. Also, the trouble of discarding information is eliminated, and the inconvenience that the driver is confused is also eliminated.

More specifically, when the recommended travel lane information is displayed in the upper area of the display unit and the vehicle speed information is displayed in the lower area, the recommended travel lane information is displayed at a position close to the driver's gaze point. The driver gets the impression that the target intersection is still ahead but needs to be prepared in time (distance). For this reason, it is possible to psychologically prompt a change of the driving lane. And then, the traveling direction information in the area of the right and left one side is displayed in the display unit, by vehicle speed information to the other of the left and right side region is displayed, that is, information and its display position for route guidance (display layout) And the driver are strongly switched to the impression that the target intersection is close. Therefore, the driver's attention can be alerted more effectively, and the route guidance can be performed more smoothly.
Here, since the display unit according to the present invention is erected on the top surface of the instrument panel separately from the windshield, the size of the display area is easily limited in relation to the windshield and the like. On the other hand, the present invention is very useful because the route guidance can be performed with a little amount of information while attracting the driver's attention.

In the head-up display device, when the remaining distance is equal to or less than the second set value, the information display control unit displays the traveling direction information in an area inside the vehicle and the vehicle speed information in an area outside the vehicle. Is preferably displayed.

Furthermore, in the head-up display device, the information display control unit is more distant from the target intersection when the vehicle speed is faster than the specific speed, compared to when the vehicle speed is slower than the specific speed. It is preferable to start from a point.
According to this configuration, it is possible to start displaying the recommended travel lane information at a more appropriate timing according to the vehicle speed of the vehicle, which is advantageous in performing smooth route guidance.

  Further, in the head-up display device, for example, the graphic indicating the plurality of travel lanes in the recommended travel lane information is a plurality of arrows respectively corresponding to the plurality of travel lanes and arranged in parallel in the lateral direction, and the traveling direction The information is preferably a single arrow indicating the direction of travel.

  According to such a configuration, in addition to being able to perform route guidance intuitively, the number of arrows is reduced to one when switching from recommended travel lane information to travel direction information. It will be easier to arouse. Therefore, it is more advantageous for smooth route guidance.

  As described above, according to the head-up display device according to the present invention, it is possible to effectively attract the driver's attention with a relatively small amount of information, thereby enabling better route guidance. It becomes.

It is a perspective view which shows the instrument panel periphery of the vehicle by which the head-up display apparatus of this invention was mounted. It is sectional drawing of the instrument panel shown in FIG. It is a block diagram which shows the electric constitution of a head up display apparatus. It is a table | surface which shows the kind of information which a head-up display apparatus displays, and its priority. It is a flowchart which shows an example of the information display control of a head-up display apparatus. It is a schematic diagram of the sub-display showing the display layout and the priority order of the display area, (a) is 900 m or 600 m or more before the target intersection, (b) is 900 m or 600 m past the target intersection. A point, (c) shows the display layout and the priority order of the point that has passed the point 300 m from the target intersection. (A), (b) is a schematic diagram which shows the display state of the sub display of the point 900 m or 600 m or more before the target intersection. (A) is a schematic diagram showing a display state of the sub display when a point of 900 m or 600 m has passed from the target intersection, and (b) is a display of the sub display when a point of 300 m has passed from the target intersection. It is a schematic diagram which shows a state.

  Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing the periphery of an instrument panel of a vehicle equipped with a head-up display device according to the present invention. As shown in FIG. 1, an instrument panel 2 extending in the vehicle width direction is provided at the front portion of the passenger compartment 1. A console portion 4 extends from the center of the instrument panel 2 in the vehicle width direction toward the rear of the passenger compartment 1. Furthermore, a column shaft (not shown) is inserted into an opening provided on the side of the instrument panel 2 on the driver's seat side, and a steering wheel 6 is attached to the column shaft.

  A center display 10 having a liquid crystal screen is provided on the upper surface of the center portion of the instrument panel 2 in the vehicle width direction. A meter unit 8 is provided on the side of the instrument panel 2 on the driver's seat side (left side in FIG. 1). Further, on the upper surface of the instrument panel 2 on the driver's seat side, a postscript display 20 of the head-up display device 12 according to the present invention is provided separately from the center display 10.

  On the upper surface of the console section 4, there are a shift lever 16 for performing a shifting operation of the transmission of the vehicle, and a dial for performing operations related to various in-vehicle functions such as a navigation device 42 (shown in FIG. 3) described later and a cruise control function. A switch 18 is provided. Although not shown, the steering wheel 6 is provided with a steering switch for operating the navigation device 42, a cruise control function, and the like.

  Next, the configuration of the head-up display device 12 will be described with reference to FIG. FIG. 2 is a cross-sectional view of the instrument panel 2 shown in FIG.

  As shown in FIG. 2, the head-up display device 12 is a display 20 that is erected from the upper surface of the instrument panel 2 in the driving field of view of the driver (hereinafter referred to as a sub-display 20 to distinguish it from the center display 10). And a projector 22 that is installed inside the instrument panel 2 and projects an image on the sub-display 20, and a motor unit 24 that drives the sub-display 20. In this example, the sub display 20 corresponds to the display unit of the present invention, and the sub display 20 and the projector 22 correspond to the information display means of the present invention.

  The sub-display 20 is a flat half mirror with a substantially trapezoidal planar shape, and is rotatably attached to the upper surface of the instrument panel 2 via a rotation shaft. The motor unit 24 that rotationally drives the sub-display 20 is provided on the front side of the projector 22, and the sub-display 20 stands up from the upper surface of the instrument panel 2 by the motor unit 24. Over the display position for displaying information on the driver (position indicated by a solid line in FIG. 2) and the non-display position (position indicated by a two-dot chain line in FIG. 2) that is tilted along the upper surface of the instrument panel 2 Displaceable. The motor unit 24 raises the sub-display 20 to the display position when the ignition (IGN) of the vehicle is turned on, and stores the sub-display 20 in the non-display position when the ignition is turned off.

In order to suppress the movement of the line of sight and the focus when the driver driving the vehicle visually recognizes the sub display 20, it is desirable to dispose the sub display 20 as far as possible from the viewpoint of the driver. Specifically, the sub display 20 according to the present embodiment is disposed in front of the vehicle with respect to the display surface 8 a of the meter unit 8. In this case, since the sub-display 20 must be erected in a narrow space between the upper surface of the instrument panel 2 and the front window 3, the sub-display 20 is a horizontally long stand having an aspect ratio of about 1: 2. The shape has an area of 30 cm ^{2 to} 80 cm ² , preferably 45 cm ^{2 to} 60 cm ² .

  FIG. 3 is a block diagram showing the electrical configuration of the head-up display device 12. As shown in FIG. 3, the head-up display device 12 includes a controller unit 30 that comprehensively controls the display of the sub-display 20 in addition to the sub-display 20, the projector 22, and the motor unit 24.

  The controller unit 30 is a control device based on a well-known microcomputer, and includes a central processing unit (CPU) that executes a program, a memory that stores programs and various data such as ROM and RAM, and an electrical signal. And an input / output (I / O) bus for input / output. The controller unit 30 is connected to an in-vehicle network 40 such as a CAN (Controller Area Network), for example, and can communicate with the navigation device 42 or the like via the in-vehicle network 40.

  If it demonstrates within the range relevant to this invention, the controller unit 30 contains the information acquisition part 32, the display information selection part 34, the display control part 36, the display control part 38, etc. as the function structure.

  The information acquisition unit 32 acquires various information to be displayed on the sub-display 20 and acquires various information from the navigation device 42 and the like via the in-vehicle network 40. The display information selection unit 34 determines information to be displayed on the sub-display 20 according to the information acquired by the information acquisition unit 32 and specifies the priority order thereof. The display control unit 36 outputs a control signal to the projector 22 so as to display the information at a predetermined position on the sub display 20 based on the information to be displayed and the priority order determined by the display information selection unit 34. In this example, the display information selection unit 34 and the display control unit 36 correspond to the information display control means of the present invention.

  The display control unit 38 controls the position of the sub-display 20 and changes the position of the sub-display 20 to the display position and the non-display position according to an ignition (IGN) on / off signal input through the in-vehicle network 40. A control signal is output to the motor unit 24 to switch between the two.

  As is well known, the navigation device 42 detects the current position of the vehicle based on the GPS signal, the traveling speed, the gyro sensor output, and the like, and a guidance route from the detected current position to the destination specified by the driver or the like. And the guidance route is displayed on the center display 10 together with the map information. Also, various information for guiding the driver along the guidance route is calculated and displayed on the center display 10. In this example, information calculated in the navigation device 42, such as a guidance route and various types of information for route guidance, corresponds to “information on route guidance” of the present invention.

  The head-up display device 12 acquires information (information on route guidance) calculated in the navigation device 42 in this way, so that the route guidance can be performed even when the driver cannot afford to view the information on the center display 10. Information is supplementarily displayed on the sub display 20 so as to be possible.

  Here, the types of information to be displayed on the sub-display 20 and the priority order for displaying each information will be described with reference to FIG.

  As shown in FIG. 4, the types of information displayed on the sub-display 20 include, in principle, basic information that is always displayed, navigation information (navigation information), warning information that indicates a warning to the driver, and vehicle status. Vehicle state information indicating.

  The basic information is information that is frequently viewed by the driver during driving of the vehicle. For example, “vehicle speed (current speed)” of the vehicle corresponds to the basic information. Since the vehicle speed is information that is frequently viewed by the driver, the vehicle speed is always displayed on the sub-display 20 so that the driver can check at any time. The controller unit 30 (information acquisition unit 32) acquires this information from the ECU (Electronic Control Unit) or the navigation device 42 of the vehicle.

  The navigation information is information for guiding the driver along the guidance route. Specifically, “lane guide”, “traveling direction guide”, and “remaining distance” correspond to the navigation information. The lane guide (corresponding to the recommended travel lane information of the present invention) is information for specifying a recommended travel lane in relation to the guide route when there are a plurality of travel lanes. The traveling direction guide (corresponding to the traveling direction information of the present invention) is information for specifying the traveling direction at the intersection. The remaining distance is information that specifies a distance to an intersection that is an intersection on the guidance route and that turns next (hereinafter referred to as a target intersection). The navigation information is information necessary for the driver to understand the guidance route and perform the driving operation even when the driver cannot afford to view the information on the center display 10 by the navigation device 42. It is displayed on the sub display 20. The navigation information is included in the information on the route guidance calculated in the navigation device 42, and therefore the controller unit 30 (information acquisition unit 32) acquires this information from the navigation device 42.

  The vehicle state information is information for allowing the driver to grasp the state of the vehicle as necessary. For example, the status of the active safety system (lane departure warning function, forward vehicle following traveling function, inter-vehicle distance recognition support function, etc.) and information indicating the vehicle operating state detected by these functions correspond to the vehicle state information. The controller unit 30 (information acquisition unit 32) acquires the vehicle state information from an active safety system (not shown).

  The warning information is information for warning the driver of a trouble related to the vehicle or the danger of an accident. For example, warnings (lane departure warning, forward collision warning, automatic brake operation warning, etc.) by the active safety system correspond to the warning information. The controller unit 30 (information acquisition unit 32) acquires this warning information from the active safety system.

  Among the pieces of information shown in FIG. 4, the warning information has the highest priority among all pieces of information because the driver needs to promptly and reliably recognize the warning. In addition, the navigation information is information directly connected to the driving operation of the driver (for example, right or left turn at the intersection), and since it is necessary to make the driver surely recognize the navigation information, the navigation information has the second highest priority after the warning information. In addition, since basic information is frequently viewed by a driver and needs to be displayed at all times, basic information has the second highest priority after navigation information. The vehicle state information is information that changes from moment to moment according to changes in the state of the vehicle. However, since the vehicle state information is of a level that can be confirmed by the driver, it has the lowest priority among all information. That is, as shown in FIG. 4, the priority of each information is higher in the order of warning information, navigation information, basic information, and vehicle state information (in FIG. 4, “1” has the highest priority, and “4” has the highest priority). The lowest priority).

  Next, an example of information display control in the head-up display device 12 will be described with reference to the flowchart of FIG.

  The information display control shown in FIG. 5 is activated and repeatedly executed when the ignition of the vehicle is turned on and the head-up display device 12 is powered on. When this control is started, first, the information acquisition unit 32 acquires various types of information for displaying on the sub-display 20 (step S1). Specifically, the information acquisition unit 32 acquires basic information (vehicle speed) from the ECU, acquires vehicle state information from the active safety system, acquires navigation information from the navigation device 42, and receives warning information from the active safety system. get. Here, the information acquisition unit 32 always acquires basic information (vehicle speed), but for other information (vehicle state information, navigation information, warning information), the information is obtained from the active safety system or the navigation device 42. Obtain only when output (calculated).

  Next, the display information selection unit 34 determines whether or not the navigation information is included in the information acquired by the information acquisition unit 32 (step S3). If it is determined YES, the remaining information from the current location to the target intersection is determined. It is determined whether or not the distance D is equal to or less than a preset first set distance D1 (step S5). In this example, the first set distance D1 is the first set value of the present invention, and is set to 900 m, for example.

  If the display information selection unit 34 determines NO in the processes of step S5 and step S3, the display information selection unit 34 selects other information excluding navigation information from the information acquired by the information acquisition unit 32. The information is displayed on the sub display 20 according to the priority order (step S17), and the information display control process proceeds to step S1.

  That is, the display information selection unit 34 specifies the priority order of each information based on the table shown in FIG. 4, and the display control is performed so that each information is displayed at a predetermined position on the sub display 20 according to the priority order. The unit 36 outputs a control signal to the projector 22. In this case, as shown in FIG. 6A, the display control unit 36 displays the display area of the sub-display 20 on the upper first area 20a and on the lower side and the vehicle inner side (the vehicle right side in the left-hand drive vehicle). The area is divided into three areas: a two area 20b and a third area 20c on the lower side and on the vehicle outer side (the vehicle left side in the left-hand drive vehicle). Then, a control signal is output to the sub-display 20 so that information with high priority is displayed in order from the first region 20a. 6A indicates the priority order of each area of the sub display 20 (the same applies to FIGS. 6B and 6C).

  Thereby, for example, when the display target is only basic information (speed), the basic information is displayed in the center of the first region 20a as shown in FIG. When the display objects are basic information (speed) and vehicle state information (for example, the status of the lane departure warning function), as shown in FIG. 7B, basic information with a high priority is displayed in the first area 20a. The vehicle state information that is displayed and has a lower priority is displayed in the second area 20b. In this case, as shown in the figure, the display control unit 36 displays the basic information at a position closer to the vehicle outer side (above the third region 20c) in the first region 20a. Output a control signal. That is, the information visibility is improved by shifting the upper and lower information from each other in the vehicle width direction. The displayed characters and figures are stored in a storage unit (not shown) in the controller unit 30, and the display control unit 36 selects an appropriate character or figure based on the information acquired by the information acquisition unit 32. The sub-display 20 displays the above.

  On the other hand, if YES in step S5, that is, if the remaining distance D from the current location to the target intersection is equal to or less than the first set distance D1, the display information selection unit 34 determines that the current speed S of the vehicle is the set speed S1. It is determined whether or not this is the case (step S7). In this example, this set speed S1 is, for example, 70 km / h.

  Here, when it is determined NO, the display information selection unit 34 determines whether or not the remaining distance D from the current location to the target intersection is equal to or less than the second set distance D2 (step S8). In this example, the second set distance D2 is 600 m, for example.

  When it determines with YES by step S7 and step S8, the display information selection part 34 further determines whether the remaining distance D is below 3rd setting distance D3 (step S9). In this example, the third set distance D3 is the second set value of the present invention, and is set to 300 m, for example.

  If the determination is YES, the display information selection unit 34 selects two pieces of information in order from the highest priority among the information acquired by the information acquisition unit 32, and this information is displayed via the display control unit 36. Two pieces of information are displayed on the sub-display 20 (step S11). Therefore, unless the information acquisition unit 32 acquires warning information from the active safety system, only basic information (vehicle speed) and navigation information are displayed on the sub-display 20 in the process of step S11. In this case, the display information selection unit 34 selects only the lane guide from the navigation information acquired by the information acquisition unit 32.

  In the process of step S11, the display control unit 36 changes the display layout of the sub-display 20 from the display layout of FIG. 6A to the display layout of FIG. Specifically, the display control unit 36 divides the display area of the sub-display 20 into upper and lower halves of the upper first area 20d and the lower second area 20e, and as shown in FIG. Navigation information (lane guide) with high priority is displayed in the first area 20d, and basic information (vehicle speed) is displayed in the second area 20e. In this case, the display control unit 36 uses the first region 20d widely as a lane guide, and displays a graphic showing a plurality of travel lanes, from which the recommended lane can be specified. For example, as shown in FIG. 8A, a plurality of arrows arranged in parallel in the horizontal direction corresponding to each of a plurality of travel lanes are displayed, and among these arrows, recommended lanes are displayed with black arrows. That is, in the example of the figure, the two arrows on the right side indicate recommended lanes.

  Thus, the process of step S11 is repeated until the remaining distance D becomes equal to or less than the third set distance D3. When the remaining distance D becomes equal to or less than the third set distance D3 (YES in step S9), the display information selection unit 34 acquires information. The traveling direction guide and the remaining distance are selected from the navigation information acquired by the unit 32, and the navigation information displayed on the sub-display 20 is changed from the lane guide to the traveling direction guide and the remaining distance (step S13). At the same time, the display control unit 36 changes the display layout of the sub-display 20 from the display layout of FIG. 6B to the display layout of FIG. Specifically, the display control unit 36 divides the display area of the sub-display 20 into left and right halves of a first area 20f inside the vehicle and a second area 20g outside the vehicle, as shown in FIG. 8B. The navigation information (travel direction guide and remaining distance) with high priority is displayed in the first area 20f, and the basic information (vehicle speed) is displayed in the second area 20g.

  In this case, the display control unit 36 uses the first region 20f widely as a traveling direction guide to display a single arrow indicating the traveling direction, and then remains on the lower side thereof as shown in FIG. Display the distance character.

  Thereafter, the display information selection unit 34 determines whether or not the vehicle has passed the target intersection (step S15). If YES is determined in this step, the information display control process is returned to step S1. .

  Although not shown in the flowchart of FIG. 5, warning information is included in the information acquired by the information acquisition unit 32. When the display information selection unit 34 selects this warning information, the display information selection unit 34 Determines the importance of the information according to a preset table. When the warning information having the highest importance is selected, the display control unit 36 displays the warning information on the entire display area of the sub-display 20 without displaying other information. For example, when the vehicle deviates from the oblique line during the operation of the lane departure warning function, an image indicating the lane departure warning is displayed in the entire display area of the sub display 20.

  Regarding the information display control in the head-up display device 12 as described above, the display of the sub-display 20 when the information acquisition unit 32 acquires navigation information is summarized as follows.

  First, when the remaining distance D from the current location to the target intersection exceeds the first set distance D1 (900 m), the navigation information is not displayed on the sub-display 20, and FIG. 7A or FIG. As shown in b), basic information (speed) and vehicle state information (status such as a lane departure warning function) are displayed.

  When the vehicle speed S is equal to or higher than the set speed S1 (70 m / h), the remaining distance D is equal to or less than the first set distance D1 (900 m), and the vehicle speed S is equal to the set speed S1 ( In the case of less than 70 m / h), the navigation information starts to be displayed on the sub-displays 20 at the points where the remaining distance D is equal to or less than the second set distance D2 (600 m). In this case, as shown in FIG. 8A, only the lane guide is displayed as the navigation information on the upper side of the sub-display 20, and the speed as basic information is displayed on the lower side thereof. Such a display is continued until the remaining distance D becomes equal to or less than the third set distance D3 (300 m).

  When the vehicle further approaches the target intersection and the remaining distance D is equal to or less than the third set distance D3 (300 m), the navigation information display is switched from the lane guide to the traveling direction guide and the remaining distance. The display layout of 20 is switched from the vertical division to the left and right division. In this case, as shown in FIG. 8C, the traveling direction guide and the remaining distance are displayed on the inner side (region inside the vehicle) of the sub-display 20, and the speed as basic information is displayed on the outer side (region outside the vehicle). Is displayed. Such display is continued until the vehicle passes the target intersection.

  As described above, in the head-up display device 12 described above, at a point far from the target intersection to some extent (the remaining distance D exceeds the third set value and equal to or less than the first or second set value), the speed that is basic information, Of the navigation information, only the lane guide is displayed on the sub-display 20, and when the vehicle is closer to the target intersection (the remaining distance D is equal to or smaller than the third set value), the lane guide disappears, and the traveling direction guide is replaced with the lane guide. It is displayed on the sub display 20.

  According to such display on the sub-display 20, there is no inconvenience in sorting out information as in the conventional device (Patent Document 1 of Background Art) in which a great amount of information is simultaneously displayed on the display unit. In addition to the lane guide, the traveling direction guide is not displayed in addition, but the navigation information itself is switched from the lane guide to the traveling direction guide. The trouble that the driver is confused by displaying the navigation information at the same time is also eliminated. In addition, since the lane guide and the traveling direction guide can be displayed in a large size using a narrow display area as much as possible, there is an advantage that it is easy to call the driver's attention.

  In particular, in the head-up display device 12, first, the lane guide is displayed on the upper side and the speed is displayed on the lower side in the display area of the sub-display 20 (FIG. 8A), and then the target intersection is displayed. When approaching, the navigation information is switched from the lane guide to the traveling direction guide, and at the same time, the display layout is switched from the upper and lower layouts to the left and right layouts (FIG. 8 (b)). It is possible to perform route guidance. That is, according to the display mode as described above, first, the lane guide is displayed in the upper area of the sub display 20 close to the driver's point of sight, so that the driver is still ahead of the target intersection, but the time I get the impression that it is necessary to make preparations soon. For this reason, it is possible to psychologically prompt a change of the driving lane. Then, after that, the content of the navigation information and the display position (display layout) are switched at the same time, so that the driver has a strong impression that the target intersection is close. Therefore, according to the head-up display device 12, it is possible to effectively alert the driver to the lane guide and the traveling direction guide displayed on the sub-display 20, and thereby, the driver's route guidance can be performed more smoothly. Can be done.

  Further, according to the head-up display device 12, the timing at which the lane guide is displayed on the sub display 20 is switched according to the speed of the vehicle (the point at which the lane guide starts to be displayed is switched). Specifically, when the vehicle speed is equal to or higher than the set speed S1 (70 km / h), the lane guide starts to be displayed from a point that is a certain distance (300 m) ahead of the case where the vehicle speed is less than that. Therefore, the inconvenience that the display start timing of the lane guide is too early or too late depending on the vehicle speed can be suppressed, and this also has the advantage of contributing to smooth route guidance.

  Although not mentioned in the above description, the size of letters and numbers displayed on the sub-display 20 is displayed so as to be constant even when the display area is changed, as shown in FIGS. It is controlled by the control unit 36. This is to prevent the driver from being confused as to whether the meaning content of the letters / numbers has changed due to the size of the letters / numbers changing depending on the display area.

  By the way, the vehicle information display device described above is an example of a preferred embodiment of the vehicle information display device according to the present invention, and the specific configuration thereof can be appropriately changed without departing from the gist of the present invention. is there.

  For example, the head-up display device 12 of the above embodiment displays information on the sub-display 20 with the display 20 (half mirror) standing on the upper surface of the instrument panel 2 as a display unit. For example, the head-up display device 12 may be of a type that displays information on the front window 3 using a part of the front window 3 as a display unit.

  Further, the lane guide and the traveling direction guide shown in FIGS. 8A and 8B are merely examples of the embodiment and are not limited to those shown in the figure, and can be appropriately changed.

DESCRIPTION OF SYMBOLS 12 Head up display apparatus 20 Sub display 22 Projector 24 Motor unit 30 Controller unit 32 Information acquisition part 34 Display information selection part 36 Display control part

Claims (4)

A head-up display device for guiding a route of a vehicle,
Information display means including a horizontally long and substantially rectangular display unit standing in the driver's field of view from the top of the instrument panel in front of the driver seat;
Information acquisition means for acquiring vehicle speed information and information on the route guidance calculated by a navigation device mounted on the vehicle;
Information display control means for displaying information on the display unit based on the information acquired by the information acquisition means,
The display unit includes the vehicle speed information, traveling direction information including a single figure indicating a traveling direction at a target intersection that is an intersection that is an intersection in the guidance route, and is a figure indicating a plurality of traveling lanes. Predetermined information selected from a plurality of pieces of information including the recommended driving lane information including a figure that can identify the recommended driving lane among the driving lanes,
The information display control means, when the remaining distance to the local point from the target intersection becomes the first set value, without displaying the traveling direction information on the display unit, the recommended travel in the upper region of the display unit When the vehicle speed information is displayed in a lower area, and the remaining distance is a second set value shorter than the first set value, the recommended travel lane information is not displayed on the display unit. The head-up display device , wherein the traveling direction information is displayed in a region on one of the left and right sides of the display unit, and the vehicle speed information is displayed on a region on the other side of the left and right . The head-up display device according to claim 1,
Before SL information display control means, when the pre-chopped distance is below the second set value, the traveling direction information on the vehicle inner side region of the display unit to display each said vehicle speed information to the vehicle outer side area A head-up display device characterized by that. The head-up display device according to claim 1 or 2,
The information display control means starts displaying the recommended travel lane information at a point farther from the target intersection when the vehicle speed is faster than the specific speed, compared to when the vehicle speed is slower than the specific speed. Head-up display device. In the head up display device according to any one of claims 1 to 3 ,
The graphic indicating the plurality of driving lanes of the recommended driving lane information is a plurality of arrows corresponding to the plurality of driving lanes and arranged in parallel in the horizontal direction, and the traveling direction information is a single indicating the traveling direction. A head-up display device characterized by an arrow.

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