JP2007055365A - Vehicular display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To correct a display position of a distance scale so as to enable the distance scale to indicate a correct distance even if a view point of a driver changes according to the tilting of a road, in the case that the distance scale is indicated in a head-up display. <P>SOLUTION: A display control portion 33 inputs the information of a traveling point where an own vehicle travels at the present time, the information of a traveling estimated point where the own vehicle travels from map data of a navigation device 20. From the information, a tilting angle of the road on which the own vehicle travels is obtained, and correction computing a correcting display height from the ground surface of the distance scale is carried out by using a correction coefficient corresponding to the tilting angle. The display height of a distance scale image is corrected in a projecting portion, and indicated in a front window shield. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicular display device that displays a desired image on a front windshield of a vehicle.

  2. Description of the Related Art In recent years, various information provision / warning devices using information devices such as car navigation devices have been considered as means for assisting a driver driving a vehicle and suppressing traffic accidents. Above all, according to the device that displays the driving support information using the head-up display, there is an advantage that the driver's line-of-sight movement amount is reduced and recognition errors of the displayed driving support information can be reduced. It is becoming widespread.

  In such a vehicle display device, in order to prevent a rear-end collision with a preceding vehicle, a distance indication image (distance scale) that serves as a guide for the inter-vehicle distance is displayed as driving support information on the road surface in the foreground. Are provided in US Pat.

In Patent Document 1, in a head-up display that displays an image on a front windshield of an automobile or the like, a display position of a reference point displayed on a screen provided on the front windshield and a mark on a bonnet confirmed through the screen There has been proposed a method for adjusting the position of the viewpoint by making it appear to overlap with the position of. Further, Patent Document 2 proposes a method of stopping the display operation when the degree of inclination of the vehicle is greater than or equal to a predetermined level.
Japanese Patent Laid-Open No. 10-176828 JP-A-5-85223

  However, in the technique described in Patent Document 1, the marker used for detecting the viewpoint position of the driver is set on the vehicle bonnet. However, for a vehicle type or a retrofit device having an extremely short bonnet such as a 1BOX car. In such a case, the display position of the distance scale cannot be adjusted by correcting the viewpoint position.

  Further, in the method described in Patent Document 2, detection sensors for detecting curves and slopes, such as a straightness sensor and an inclination sensor, are used, but only ON / OFF of distance scale projection is controlled. In addition, the display position of the distance scale according to the driver's viewpoint is not adjusted.

  In view of the above points, in the present invention, when the distance scale is displayed as a head-up display, the distance scale image is the correct distance regardless of the shape of the mounted vehicle even if the viewpoint position of the driver changes according to the inclination angle of the road. An object of the present invention is to provide a display device for a vehicle that can correct the display position of a distance scale image so that

  In order to achieve the above object, according to the first aspect of the present invention, the display control unit (33) displays the vehicle on the front windshield (WS) from the ground when the host vehicle (90) travels in a horizontal place. When the vertical display height value up to the distance scale image (61-63) is corrected with a correction coefficient corresponding to the inclination angle of the road, the travel point where the host vehicle currently obtained from the map data is traveling The road inclination angle is obtained using the information and the planned travel point information where the host vehicle will travel, the display height is corrected using a correction coefficient corresponding to the inclination angle, and the projection unit (34 ) To display the image after correcting the display height of the distance scale image.

  In this way, the inclination angle of the road on which the host vehicle travels is acquired using the map data, and the display height value for displaying the distance scale image is corrected with a correction coefficient corresponding to the inclination angle. Thereby, even if the viewpoint position of the driver changes according to the inclination angle of the host vehicle, the display position of the distance scale image can be corrected so that the distance scale image points to the correct distance from the changed viewpoint position. Further, since the correction calculation is performed using the inclination angle of the host vehicle and the correction coefficient, the display position of the distance scale image can be corrected regardless of the vehicle type on which the vehicle display device is mounted.

  In the invention according to claim 2, the display control unit outputs a command to the projection unit to stop the display of the distance scale image when the inclination angle of the road on which the host vehicle travels exceeds a predetermined angle. To do.

  As described above, when the inclination angle exceeds the predetermined angle, the display of the distance scale image is stopped. That is, when the inclination angle increases, the distance scale image does not become a guide for the inter-vehicle distance. Therefore, when the inclination angle exceeds a predetermined angle, the distance scale image is not displayed. Thereby, it can prevent that a driver recognizes the distance between vehicles accidentally.

  In the invention according to claim 3, the projection unit displays a plurality of distance scale images according to the distance ahead of the host vehicle, and the display control unit determines the inclination angle of the road on which the host vehicle travels. Accordingly, the display height of each distance scale image is corrected accordingly, and the display unit corrects the display height of each distance scale image and displays it.

  Thus, even when displaying a plurality of distance scale images, the display height of each distance scale image is corrected and calculated. Thereby, even when a plurality of distance scale images are displayed and the vehicle travels uphill or downhill, the display position of each distance scale image can be corrected.

  In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the specific means as described in embodiment mentioned later.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. The display device for a vehicle shown in the present embodiment displays a marker corresponding to a predetermined distance ahead of the host vehicle on the front windshield of the host vehicle, whereby an obstacle (in front of the host vehicle with respect to the driver) ( For example, the vehicle interval between the vehicle in front and the host vehicle is recognized.

  FIG. 1 is a block diagram of a vehicle display device according to an embodiment of the present invention. As shown in this figure, the vehicle display device includes a meter unit 10, a navigation device 20, and a vehicle information display device 30.

  The meter unit 10 incorporates a meter ECU, and generates and outputs a vehicle speed signal Sv indicating the traveling speed of the host vehicle based on a pulse signal from a vehicle speed sensor (not shown).

  The navigation device 20 determines a guide route to a set destination, guides the traveling of the host vehicle based on the determined guide route, and stores map data in which a GPS receiver (not shown) and map data are stored. It has a known configuration including a storage medium, a direction sensor, a gyroscope for detecting the inclination of the host vehicle, and the like. Such a navigation device 20 outputs traveling information of the host vehicle to the vehicle information display device 30 using the vehicle speed signal Sv input from the meter unit 10. Moreover, the navigation apparatus 20 outputs the traveling point information of the own vehicle and the planned traveling point information ahead of the own vehicle using the map data.

  The vehicle information display device 30 is input from the navigation device 20 and includes road type information about the road on which the host vehicle is traveling, current position information of the host vehicle, regulation / emergency information of surrounding roads, predetermined image information (RGB signal). ) Is displayed on a monitor (not shown), for example. The vehicle information display device 30 also has a function of displaying a distance scale image (hereinafter referred to as a distance scale) as an indication of the inter-vehicle distance between the host vehicle and the preceding vehicle.

  In addition, it is also possible to adopt a system configuration in which signals and information are exchanged among the meter unit 10, the navigation device 20, and the vehicle information display device 30 using an in-vehicle LAN.

  Such a vehicle information display device 30 includes a display content setting unit 31, a display condition setting unit 32, a display control unit 33, and a projection unit 34. The vehicle information display device 30 has a built-in microcomputer, and can control the display content setting unit 31, the display condition setting unit 32, and the display control unit 33.

  The display content setting unit 31 is configured to accept a setting operation by a driver, and selectively displays items to be displayed among road type information, current position information, regulation / emergency information, and image information input from the navigation device 20. It is for setting to.

  Similar to the display content setting unit 31, the display condition setting unit 32 is configured to accept a setting operation by a driver, and is used to set display conditions (brightness, display position, etc.) for display items. is there.

  The display control unit 33 displays information set by the display content setting unit 31 among road type information, vehicle speed information, current position information, regulation / emergency information, and image information input from the navigation device 20. The display is controlled under the display conditions set in.

  In addition, the display control unit 33 has a function of causing the projection unit 34 (to be described later) to display an image of a distance scale as a guide for the distance between the host vehicle and the preceding vehicle, and the host vehicle input from the navigation device 20. Each information of the travel point information and the planned travel point information that the host vehicle will travel is input, and the driver's viewpoint (eye point EP, see FIG. 2) that changes according to the inclination angle of the road on which the host vehicle travels is input. Accordingly, it has a function of correcting the display position of the distance scale.

  The projection unit 34 displays information input from the display control unit 33 as an image, and includes a head-up display. A specific configuration of the projection unit 34 is shown in FIG.

  As shown in FIG. 2, the projection unit 34 includes an information display device 50. The information display device 50 projects a simple-shaped image onto the front windshield WS of the vehicle to display the image as a virtual image superimposed on the foreground, and includes a light source 51 and a predetermined image (a reference described later). The optical waveguide deflecting plate 52 on which the marker 61 and the distance scales 62 and 63) are printed, and the deflecting plate angle changing dial 53 for adjusting the angle of the optical waveguide deflecting plate 52 are provided.

  The information display device 50 is disposed at a driver seat corresponding position on the dashboard of the host vehicle, for example. On the dashboard, a distance correction acrylic plate 54 for reference distance confirmation is fixed. On the distance correction acrylic plate 54, a correction marker 54a (see FIG. 3 described later) having a predetermined shape is printed.

  In such a projection unit 34, when light is emitted from the light source 51, the reference marker 61 and the distance scales 62 and 63 printed on the optical waveguide deflecting plate 52 are projected onto the front windshield WS. Thereby, the driver can recognize the distance between the obstacle (for example, vehicle) 70 in front of the vehicle and the host vehicle. Such distance scales 62 and 63 are shown in FIG.

  FIG. 3 is a schematic view of the front of the vehicle viewed from the passenger compartment of the host vehicle, that is, from the eye point EP shown in FIG. 2 through the front windshield WS. As shown in this figure, two arc-shaped correction markers 54 a are drawn on the distance correction acrylic plate 54. Then, according to the operation of the projection unit 34, the reference marker 61 is projected and displayed at the center position of the two correction markers 54a of the distance correction acrylic plate 54, and two bar-shaped distances are displayed on the front windshield WS. Scales 62 and 63 are displayed by projection.

  In the present embodiment, when the front of the vehicle is viewed from the eye point EP shown in FIG. 2 through the front windshield WS, for example, the reference marker 61 is located 50 m ahead of the eye point EP, the distance scale 62 is located 100 m ahead and 150 m ahead, 63 is displayed.

  That is, the driver is in a driving posture in which the reference marker 61 appears to be positioned at the center of the correction marker 54a on the distance correction acrylic plate 54 (the line of sight from the driver's eye point EP is the position of the correction marker 54a). In the state of being superimposed on the center and the reference marker 61), the positions of the distance scales 62 and 63 viewed from the driver through the front windshield WS are controlled so as to be exactly 100 m and 150 m, respectively. Yes. The reference marker 61 is included in the distance scales 62 and 63.

  With such distance scales 62 and 63, the distance between the host vehicle and the obstacle 70 can be known. The above is the configuration of the vehicle display device according to the present embodiment.

  Next, when the place where the distance scales 62 and 63 are visually recognized changes due to the movement of the driver's eye point EP according to the inclination of the host vehicle, the display position (display height) of the distance scales 62 and 63 is changed. ) Will be described.

  First, the display height from the road surface of the reference marker 61 and two distance scales displayed on the front windshield WS will be described. FIG. 4 is a diagram schematically showing the display height of the reference marker 61 and the distance scales 62 and 63 displayed on the front windshield WS from the ground.

  As shown in this figure, for example, when the eye point EP is located at a position 1 m away from the ground and 1 m away from the front windshield WS, the reference marker 61 and the distance scales 62 and 63 are respectively x and y from the ground. , Z are displayed on the front windshield WS respectively.

  Specifically, since the reference marker 61 is displayed so as to point to a point 50 m ahead of the front windshield WS, the angle between the straight line connecting the eye point EP and the reference marker 61 and the ground is θ It becomes. Thereby, in this embodiment, since tan θ = 1 / (1 + 50) = x / 50, the height x from the ground to the reference marker 61 is obtained as a depression angle calculation formula of x = 50/51 = 0.980 m. It is done.

  Similarly, the depression angle calculation formulas for the heights y and z of the distance scales 62 and 63 are tan θ ′ = 1 / (1 + 100) = y / 100 to y = 100/101 = 0.990 m and tan θ ″ = 1, respectively. / (1 + 150) = z / 150 to z = 150/151 = 0.993 m.

  The heights x, y and z of the reference marker 61 and the distance scales 62 and 63 displayed on the front windshield WS are values when the host vehicle is operating on a horizontal road. That is, when the host vehicle travels in a horizontal place, the display height values in the vertical direction from the ground to the distance scales 62 and 63 displayed on the front windshield WS are displayed. These values are the display control unit 33. Is stored in each.

  And when the own vehicle inclines according to the inclination of the road, the location of the driver's eye point EP changes, so the values of the heights x, y, and z also change. Therefore, correction of these heights x, y, and z will be described with reference to FIGS.

  5-7, the broken line has shown the straight line of the horizontal direction, the back muscle direction of the driver 81 is made into Z axis | shaft, it is perpendicular | vertical to the Z axis | shaft, and the advancing direction side of the own vehicle 90 is made into the X axis | shaft. The back muscle direction of the seat 82 on which the seat 81 is seated is the Z ′ axis, and the traveling direction side of the host vehicle 90 is the X ′ axis perpendicular to the Z ′ axis.

  In this embodiment, the display control unit 33 that inputs map data from the navigation device 20 corrects the display heights x, y, and z of the reference marker 61 and the distance scales 62 and 63 from the ground based on the map data. Perform the operation.

  FIG. 5 is a schematic diagram showing the host vehicle 90 passing through an inclined road and the change in the driver's posture according to the tilt of the host vehicle 90. As shown in this figure, the location A0 is the state shown in FIG. At this location A0, the Z′-axis of the seat 82 and the Z-axis of the driver 81 are oriented in the horizontal direction. In this way, when the host vehicle 90 is traveling in a horizontal place, the display control unit 33 does not perform correction calculation.

  On the other hand, the place A1 is an uphill, the place A2 is a downhill, and the host vehicle 90 is also inclined according to the uphill or downhill. As shown in FIG. 5, the location A1 is, for example, a height H10 with respect to the location A0, and the location A2 is, for example, a height H20 with respect to the location A0. In such an uphill or downhill, the display control unit 33 determines whether or not the host vehicle 90 is climbing an uphill with a uniform slope, or whether the host vehicle 90 is going down a downhill with a uniform slope. , Get its tilt angle.

  Specifically, since the display control unit 33 inputs map data from the navigation device 20, the display control unit 33 obtains the height information of the travel point of the host vehicle and the height information of the planned travel point ahead of the host vehicle. be able to. FIG. 6 is a diagram showing the correlation between time and height (elevation) when the host vehicle 90 is going uphill, and FIG. 7 is the time and height (elevation) when the host vehicle 90 is going downhill. It is the figure which showed these correlations.

  The display control unit 33 is shown in FIG. 6 using map information of a point where the vehicle 90 is currently traveling and map information of a point where the vehicle 90 will travel on the uphill. As described above, during the period of time T10 to T13, the own vehicle 90 goes uphill from the height H10 to H13, and the inclination angle is acquired. Similarly, on the downhill, the display control unit 33 obtains the own vehicle 90 going downhill from H20 to H23 during the time T20 to T23 and the inclination angle as shown in FIG.

  The display control unit 33 corrects the heights x, y, and z of the reference marker 61 and the distance scales 62 and 63 using the correction coefficient map shown in FIG. FIG. 8 is a correction coefficient map showing the relationship between the reference marker 61 and the correction coefficients for correcting the heights x, y, and z of the distance scales 62 and 63 with respect to the upward or downward inclination angle of the host vehicle 90. . In the present embodiment, a linear correction coefficient is used according to the inclination of the host vehicle 90.

  Specifically, the display control unit 33 calculates a correction coefficient corresponding to the upward inclination angle or the downward inclination angle of the host vehicle 90 from the ground of the reference marker 61 and the distance scales 62 and 63 from the map shown in FIG. The display heights x (= 0.980), y (= 0.990), and z (= 0.993) are respectively multiplied. The angle adjustment of the optical waveguide deflection plate 52 is performed by driving the deflection plate angle change dial 53 of the projection unit 34 so as to obtain the respective display heights thus obtained.

  In the case of the uphill shown in FIGS. 5 and 6, the driver 81 is pressed against the seat 82 (the Z axis and the Z ′ axis rotate toward the rear side of the vehicle), so the eye point EP is the front windshield WS. It will be in a state of moving away from. Therefore, the reference marker 61 and the distance scales 62 and 62 are recognized by the driver so as to point farther than the respective distances indicated by the reference marker 61 and the distance scales 62 and 62. Therefore, the correction calculation is performed as described above, and the display height of the reference marker 61 and the distance scales 62 and 63 is made smaller than when the host vehicle passes through a horizontal place. As a result, the reference marker 61 and the two distance scales 62 and 63 are displayed so that the reference marker 61 is positioned at the center of the two correction markers 54a, and the reference marker 61 and the distance scales 62 and 63 each indicate an accurate distance. Will point.

  In the case of the downhill shown in FIGS. 5 and 7, the driver 81 is lifted from the seat 82 (the Z-axis and the Z′-axis are rotated forward of the vehicle), so the eye point EP is the front windshield WS. It will be in a state approaching. Therefore, the reference marker 61 and the distance scales 62 and 62 are recognized by the driver so as to point closer to each distance indicated by the reference marker 61 and the distance scales 62 and 62. Therefore, the display height of the reference marker 61 and the distance scales 62 and 63 is made larger by the correction calculation than when the host vehicle passes through a horizontal place. As a result, the reference marker 61 and the two distance scales 62 and 63 are displayed so that the reference marker 61 is positioned at the center of the two correction markers 54a, and the reference marker 61 and the distance scales 62 and 63 each indicate an accurate distance. Will point. As described above, the display height of the reference marker 61 and the distance scales 62 and 63 can be corrected according to the inclination angle of the host vehicle 90.

  In the present embodiment, as shown in FIG. 8, no correction coefficient is prepared for an angle where the uphill and downhill inclination angles are larger than 10 °. In other words, the display control unit 33 displays the heights of the reference marker 61 and the distance scales 62 and 63 because the distance scales 62 and 63 are not helpful when the uphill and downhill inclination angles are larger than 10 °. The display of the reference marker 61 and the distance scales 62 and 63 is stopped without performing the correction calculation.

  As described above, when the distance scales 62 and 63 have an inclination angle that does not serve as a guide for the inter-vehicle distance, the display of the distance scales 62 and 63 is stopped. As a result, the driver 81 can be prevented from erroneously recognizing the inter-vehicle distance.

  Further, the display control unit 33 hides the reference marker 61 and the distance scales 62 and 63 on a road where the ups and downs are severe. That is, in a road state where the ups and downs are severe, it is difficult to display the correct distance by the distance scales 62 and 63, so that the driver 81 is not misunderstood by not displaying it.

  As described above, in the vehicle display device of the present embodiment, the inclination angle of the road on which the host vehicle 90 travels is acquired using map data, and the reference marker 61 and the distance scale are corrected with a correction coefficient corresponding to the inclination angle. The display height value for displaying 62 and 63 is corrected. Thereby, even if the viewpoint position of the driver 81 changes according to the inclination angle of the road, the display position can be corrected so that the distance scales 62 and 63 indicate the correct distance from the changed viewpoint position.

  Further, since the correction calculation is performed based on the tilt angle of the host vehicle 90 and the correction coefficient, the display positions of the distance scales 62 and 63 are corrected according to the tilt angle of the host vehicle 90 regardless of the vehicle type on which the vehicle display device is mounted. be able to.

  In this embodiment, a plurality of distance scales 62 and 63 are displayed. Even in such a case, the display heights of the distance scales 62 and 63 are corrected and calculated. Thereby, even when the host vehicle 90 travels uphill or downhill, the display positions of the distance scales 62 and 63 can be corrected.

(Other embodiments)
In the above-described embodiment, the reference marker 61 and the two distance scales 62 and 63 are printed on one optical waveguide deflecting plate 52. However, three optical waveguide deflecting plates 52 are prepared, and one reference marker is provided for each. 61 and distance scales 62 and 63 may be printed. In such a case, a plurality of deflection plate angle changing dials 53 are prepared according to the plurality of optical waveguide deflection plates 52. Further, since the display of the reference marker 61 and the distance scales 62 and 63 can be respectively adjusted, a correction coefficient map corresponding to each of the reference marker 61 and the distance scales 62 and 63 is prepared, and the respective displays can be adjusted. I do not care.

  As described above, by preparing the optical waveguide deflecting plate 52 and the deflecting plate angle changing dial 53 for each distance scale, the number of the distance scales 62 and 63 displayed according to the low speed and the high speed of the host vehicle 90 is controlled. can do. Specifically, when the host vehicle 90 is at a low speed, two distance scales 62 and 63 are displayed as shown in FIG. On the other hand, when the host vehicle 90 is at a high speed, as shown in FIG. 9, only one distance scale 63 can be displayed so that the driver 81 can recognize the far distance.

  In the above-described embodiment, the navigation device 20 is included in the vehicle display device. However, the map data may be input to the display control unit 33 from the navigation device already mounted on the vehicle. .

  In the above embodiment, a correction coefficient map in which the correction coefficient is proportional to the inclination of the host vehicle 90 is used, but the relationship between the inclination of the host vehicle 90 and the correction coefficient may not be linear. That is, a map in which the inclination of the host vehicle 90 and the correction coefficient have a non-linear relationship may be used.

  Further, in the above embodiment, the correction coefficient map shown in FIG. 8 has only the correction coefficients for which the inclination angles of the uphill and the downhill are 10 ° or less, respectively. A corresponding correction coefficient may be prepared.

  In the above embodiment, when the vehicle display device is activated, the distance scale is always displayed as an image. However, when the vehicle speed indicated by the vehicle speed signal Sv is a predetermined speed (for example, 30 km / h) or more. Only the distance scale may be displayed.

  The depression angle calculation formulas shown in the above embodiment show an example, and other calculation formulas may be used.

  In the above embodiment, the speed signal Sv is input from the meter unit 10 to the navigation device 20, but this speed signal Sv is input to the display control unit 33 of the vehicle information display device 30 to perform display control. The vehicle speed may be monitored by the unit 33, and display and non-display of the reference marker 61 and the distance scales 62 and 63 may be switched according to the vehicle speed.

It is a block diagram of the display apparatus for vehicles concerning one embodiment of the present invention. It is a schematic diagram at the time of a structure and use of the projection part shown by FIG. It is the schematic diagram which looked at the vehicle front from the vehicle interior of the vehicle through the front windshield. It is the figure which showed typically the display height from the ground of the reference | standard scale and distance scale which are displayed on a front windshield. It is the schematic diagram which showed the own vehicle passing the inclined road and the change of the attitude | position of a driver according to the inclination of the own vehicle. It is the figure which showed correlation with time and height (elevation) when the own vehicle goes uphill. It is the figure which showed correlation with time and height (elevation) when the own vehicle goes downhill. It is the figure which showed the relationship with the correction coefficient which correct | amends each height x, y, and z of the reference | standard marker with respect to the inclination angle of the own vehicle up or down, and a distance scale. In other embodiment, it is the figure which showed typically the display of the distance scale at the time of the high speed of the own vehicle.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 20 ... Navigation apparatus, 33 ... Display control part, 34 ... Projection part, 61 ... Reference | standard marker, 62, 63 ... Distance scale, 70 ... Obstacle, 90 ... Own vehicle, WS ... Front windshield, EP ... Eye point.

Claims (3)

In a vehicle display device that displays a head-up display on a front windshield (WS) of a distance scale image (61-63) that is a measure of an inter-vehicle distance between the host vehicle (90) and a front obstacle (70).
When the host vehicle travels in a horizontal place, a vertical display height value from the ground to the distance scale image displayed on the front windshield and a correction coefficient corresponding to the road inclination angle are stored. In the map data provided in the host vehicle, the travel point information where the host vehicle is currently traveling and the scheduled travel point information where the host vehicle will travel are input. A display control unit (33) that obtains an inclination angle of the road on which the host vehicle travels from these pieces of information and performs a correction operation for correcting the display height using a correction coefficient corresponding to the inclination angle;
A vehicle display device, comprising: a projection unit (34) that corrects a display height of the distance scale image based on a calculation result of the display control unit and displays an image on the front windshield. The display control unit outputs a command to the projection unit and stops displaying the distance scale image when it determines that the inclination angle of the road exceeds a predetermined angle when the host vehicle travels uphill or downhill. The vehicular display device according to claim 1, wherein the vehicular display device is configured to be used. The projection unit is configured to display a plurality of the distance scale images according to a distance ahead from the host vehicle,
The display control unit corrects the display height of each distance scale image according to the inclination angle of the road on which the host vehicle travels, and corrects the display height of each distance scale image by the projection unit. The vehicle display device according to claim 1, wherein the vehicle display device is displayed.

Images