JP2016071524A - Display device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device for a vehicle that displays a transition state of the vehicle in a lateral direction on a travel lane so that an occupant can grasp the transition state easily in an intuitive manner.SOLUTION: A HUD device 1 (a display device for a vehicle) for displaying an image indicating a travel position in a lateral direction D1 on a travel lane R where a vehicle C is traveling, in a display region AR comprises an information obtaining part 11 for obtaining positional information indicating the travel position and a HUD body 12 (an image display part) for displaying a pair of perspective images V2R and V2L that converge to a vanishing point Dp corresponding to the travel position indicated by the positional information in the display region AR to face each other on a both-end part of the display region AR in the lateral direction D1.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicle display device.

  2. Description of the Related Art Conventionally, in a vehicle display device, a technique for displaying an image that warns that a vehicle is about to deviate from a traveling lane in which the vehicle is traveling has been proposed (see, for example, Patent Document 1). In the technique described in Patent Document 1, an image representing a vehicle and an image representing left and right side edges of the traveling lane are displayed. Then, the vehicle image is shifted toward the side edge approaching in the driving lane, and the image of the side edge is blinked, and the vehicle image is displayed in a color corresponding to the degree of deviation. A lane departure warning is issued.

JP-A-11-126300

  However, for example, the technique disclosed in Patent Document 1 has a problem that it is difficult for the passenger to intuitively grasp the left-right transition state of the vehicle in the travel lane.

  The present invention aims to solve this problem. That is, an object of the present invention is to provide a vehicle display device that displays a transition state of the vehicle in the left-right direction in a traveling lane so that a passenger can easily grasp intuitively.

  In order to achieve the above object, the invention according to claim 1 is a display device for a vehicle that displays an image representing a traveling position in a left-right direction in a traveling lane in which the vehicle is traveling in a display area, An information acquisition unit that acquires position information that represents a traveling position, and a pair of perspectives that converge to the vanishing point corresponding to the traveling position indicated by the position information in the display area at both ends in the left-right direction of the display area. An image display unit that displays an image to face each other.

  According to a second aspect of the present invention, in the vehicular display device according to the first aspect, the pair of perspective images is an image including a plurality of band images that are arranged in parallel with a space therebetween and extend in the vertical direction. It is characterized by being.

  According to a third aspect of the present invention, in the vehicular display device according to the second aspect, as the distance between the perspective image and the vanishing point is shorter, the image display unit includes the plurality of images included in the perspective image. The display is performed so that the interval between the band images is small.

  According to a fourth aspect of the present invention, in the vehicular display device according to any one of the first to third aspects, the display area is formed in front of a windshield of the vehicle, and the image display unit is The pair of perspective images is displayed as a virtual image in the display area.

  According to a fifth aspect of the present invention, in the vehicular display device according to the fourth aspect, the perspective image is a three-dimensional virtual image positioned closer to the outside in the left-right direction.

  Invention of Claim 6 is a display apparatus for vehicles as described in any one of Claims 1-5. WHEREIN: The said image display part was provided with a pair of display surface for displaying the said perspective image. A display device, and the display device displays the display image on the display surface according to the position of the vanishing point so that the display image converges to the vanishing point and is displayed as the perspective image in the display area. The display image on the surface is changed.

  A seventh aspect of the present invention is the vehicle display device according to any one of the first to fifth aspects, wherein the image display unit includes a pair of display surfaces for displaying the perspective image. A display device, and the display device displays the display image on the display surface according to the position of the vanishing point so that the display image converges to the vanishing point and is displayed as the perspective image in the display area. It is configured to change the orientation of the surface.

  The invention according to claim 8 is the vehicle display device according to any one of claims 1 to 7, wherein the information acquisition unit represents a travel position in the left-right direction in the travel lane, and the travel It is configured to acquire position information that also represents the vertical direction of the vehicle according to the inclination of the lane, and the image display unit is located at both ends of the display region in the left-right direction, and the position in the display region A pair of perspective images that converge to a vanishing point corresponding to the travel position and the direction indicated by the information are configured to face each other.

  The invention according to claim 9 is the vehicle display device according to any one of claims 1 to 8, wherein the image display unit displays the perspective image in a color corresponding to a distance from the vanishing point. It is characterized by being displayed.

  According to the first aspect of the present invention, the vanishing point where the pair of perspective images converge corresponds to the traveling position of the vehicle in the traveling lane. With the pair of perspective images, the occupant can intuitively and easily grasp the lateral travel position of the vehicle in the travel lane, that is, the lateral transition state of the vehicle in the travel lane.

  According to the second aspect of the present invention, since a pair of perspective images is configured by a simple image representation of a plurality of band images extending in the vertical direction, it is possible to simplify information processing related to image display. .

  According to the third aspect of the present invention, the distance between the band images included in the perspective image is displayed smaller as the distance between the perspective image and the vanishing point is shorter. The direction transition state can be grasped more intuitively and easily by the width of the band image in the perspective image.

  According to the fourth aspect of the present invention, the pair of perspective images is displayed as a virtual image in a display area formed in front of the windshield, so that it is easy for the occupant to visually recognize the left and right sides of the vehicle in the travel lane. The direction transition state can be grasped more intuitively and easily.

  According to the invention described in claim 5, since the perspective image is a three-dimensional virtual image that is positioned closer to the outside in the left-right direction, the passenger can recognize the travel position in the travel lane with depth, It is possible to more intuitively and easily grasp the transition state in the left-right direction of the vehicle in the travel lane.

  According to the sixth aspect of the present invention, the change of the perspective image due to the movement of the vanishing point following the movement of the traveling position is realized by the change of the display image on the display surface of the display. Thereby, the change of the perspective image is expressed only by the image expression, and the mechanical structure in the image display unit can be simplified.

  According to the seventh aspect of the present invention, the change of the perspective image due to the movement of the vanishing point following the movement of the traveling position is realized by changing the direction of the display surface of the display. Thereby, since the image displayed on the display can be fixed, the information processing related to the image display can be simplified.

  According to the eighth aspect of the present invention, the pair of perspective images converge to the vanishing point corresponding to the vertical direction of the vehicle, so that the occupant can move up the traveling lane in addition to the transition state in the horizontal direction of the vehicle. It is also possible to intuitively and easily grasp the slope of whether the vehicle is down or down.

  According to the ninth aspect of the invention, since the perspective image is displayed in a color corresponding to the distance from the vanishing point, the passenger can more intuitively and easily change the transition state of the vehicle in the left-right direction in the traveling lane. Can grasp.

It is a figure which shows typically an example of the image displayed with the HUD apparatus which is 1st Embodiment of the display apparatus for vehicles of this invention. It is a schematic diagram which shows the HUD apparatus which displays the image shown by FIG. 1 seeing from the side. It is a figure which shows the schematic diagram which looked at the HUD apparatus shown by FIG. 2 from the upper side with the image displayed with the HUD apparatus. It is a figure which shows typically another example of the image displayed with the HUD apparatus shown by FIG.2 and FIG.3. It is a figure which shows the schematic diagram which looked at the HUD apparatus which is 2nd Embodiment of the display apparatus for vehicles of this invention from upper direction with the image displayed with the HUD apparatus. It is a figure which shows the rotation mechanism of the support stand shown by FIG.

  Hereinafter, a head-up display device (HUD device) which is a first embodiment of a vehicle display device of the present invention will be described with reference to FIGS.

  FIG. 1 is a diagram schematically showing an example of an image displayed on the HUD device which is the first embodiment of the vehicle display device of the present invention. FIG. 2 is a schematic diagram showing the HUD device displaying the image shown in FIG. 1 as viewed from the side. FIG. 3 is a diagram showing a schematic view of the HUD device shown in FIG. 2 as viewed from above, together with an image displayed on the HUD device. FIG. 4 is a diagram schematically illustrating another example of an image displayed by the HUD device illustrated in FIGS. 2 and 3.

  In the HUD device 1 of the present embodiment, the following image representing the travel position in the left-right direction D1 in the travel lane R on which the vehicle C is traveling is on the passenger's line of sight as will be described later, and the vehicle C Is displayed as a virtual image in the display area AR formed in front of the windshield 3. As shown in FIG. 1, this image is a pair of perspective images V2R and V2L that are arranged at both ends in the left-right direction D1 of the display area AR and converge to the vanishing point Dp in the display area AR. . In the display area AR, an information image V1 representing various information such as navigation information in a car navigation system is displayed in an area sandwiched between the pair of perspective images V2R and V2L. The pair of perspective images V2R and V2L are arranged to face both ends of the display area AR with the information image V1 interposed therebetween.

  The pair of perspective images V2R and V2L are viewed from the passenger toward the outside in the left-right direction D1, which is an image representation of a pair of virtual surfaces virtually erected on the left and right side edges LR and LL in the travel lane R. It is a three-dimensional virtual image located on the near side. The perspective images V2R and V2L converge along the perspective line PL from the left and right vertical lines SR and SL to the vanishing point Dp corresponding to the travel position of the vehicle C in the travel lane R in the left-right direction D1.

  FIG. 1A shows an example of a transition state including three travel positions P1, P2, and P3 in the left-right direction D1 of the vehicle C in the travel lane R. In the example of FIG. 1A, the vehicle C moves from the first traveling position P1 in the center of the lane to the right traveling direction D2 from the lower side to the upper side in the figure, and then passes through the second traveling position P2. The transition is made to the third traveling position P3 that is offset to the side edge LR. FIG. 1B shows perspective images V2R and V2L corresponding to the third travel position P3, and FIG. 1C shows perspective images V2R and V2L corresponding to the second travel position P2. In FIG. 1D, perspective images V2R and V2L corresponding to the third travel position P3 are shown.

  Each perspective image V2R, V2L is an image in which three band images Rb extending in the up-down direction D3 are arranged in parallel with a space between each other. From the passenger, the band image Rb on the end side of the display area AR looks longer on the near side, and the band image Rb appears shorter on the far side as the distance from the end increases.

  As shown in FIGS. 1B to 1D, the vanishing points Dp of the perspective images V2R and V2L are arranged at positions corresponding to the travel position in the left-right direction D1 of the vehicle. In the example of FIG. 1D, the vanishing point Dp is arranged at the center of the pair of perspective images V2R and V2L corresponding to the first traveling position P1 at the center of the lane. In the example of FIG. 1C, the vanishing point Dp is arranged slightly offset from the right perspective image V2R, corresponding to the second traveling position P2 slightly offset toward the right side edge LR. In the example of FIG. 1B, the vanishing point Dp is further offset from the right perspective image V2R, corresponding to the third travel position P3 further offset toward the right side edge LR.

  The HUD device 1 for displaying such a pair of perspective images V2R and V2L is schematically shown in FIGS. The HUD device 1 displays a pair of perspective images V2R and V2L as a virtual image on a display area AR formed in front of the windshield 3, and includes an information acquisition unit 11 and a HUD main body 12 (image display unit). It has.

  The HUD main body 12 is accommodated near the lower end of the windshield 3 of the instrument panel of the vehicle C. Then, the images V1, V2R, and V2L are projected toward the windshield 3, and the foreground of the vehicle C that is visually recognized through the windshield 3, and reflected by the windshield 3 and observed as a virtual image by the observer. Visually superimpose the video. 2 and 3 indicates an eye point that is the eye position of the passenger (observer).

  The HUD main body 12 includes a first display 121 that displays an information image V1 representing various types of information as a virtual image in the center of the display area AR, and a pair of perspective images V2R at both ends in the left-right direction D1 of the display area AR. , V2L as a virtual image, and a pair of second indicators 122, 123 and an aspherical mirror 124. Although it does not specify here about the 1st display 121 and the 2nd display 122,123, various display apparatuses, such as TFTLCD (thin film transistor liquid crystal display device) and VFD (fluorescent display tube), can be used, for example.

  The information acquisition unit 11 acquires position information indicating the travel position of the vehicle C in the left-right direction D1 in the travel lane R and the orientation of the vehicle C in the up-down direction D3 according to the inclination of the travel lane R. With regard to a specific method for acquiring such position information, for example, various known methods such as analyzing position of the vehicle C and acquiring position information indicating the direction according to the traveling position and the inclination, etc. Can be used.

  The first display device 121 of the HUD main body 12 displays an image serving as a source of the information image V1 displayed as a virtual image in the center of the display area AR on its display surface. The pair of second displays 122 and 123 displays images that are the basis of the perspective images V2R and V2L displayed as virtual images on each display surface. The first display 121 is arranged so that its display surface is perpendicular to the optical axis A, and the pair of second displays 122 and 123 are formed on the aspherical mirror 124 on the left and right sides of the first display 121. It is arranged at an inclination. The aspherical mirror 124 enlarges and projects the image displayed on the first display 121 and the pair of second displays 122 and 123 onto the windshield 3.

  The pair of second indicators 122 and 123 are arranged in front of the first indicator 121 with respect to the light traveling direction in the optical axis A so that the display surfaces face each other with the first indicator 121 interposed therebetween. ing. In addition, the pair of second displays 122 and 123 are arranged so that the distance between the display surfaces increases as the distance from the first display 121 increases. With such an arrangement, the perspective images V2R and V2L displayed by the second indicators 122 and 123 become a stereoscopic virtual image that is positioned closer to the outer side in the left-right direction D1 of the display area AR. The information image V1 displayed by the first display device 121 is displayed so as to face the occupant between the farthest side of the pair of perspective images V2R and V2L at the center of the display area AR.

  Here, the vanishing point Dp at which the pair of perspective images V2R and V2L formed by the pair of second indicators 122 and 123 converge is the travel in the left-right direction D1 represented by the position information acquired by the information acquisition unit 11. It is arranged at a position corresponding to the position. FIG. 3A shows perspective images V2R and V2L, which are also shown in FIG. 1D, in which the vanishing point Dp corresponds to the traveling position in the center of the lane. FIG. 3 (c) shows perspective images V2R and V2L, which are also shown in FIG. 1 (b), in which the vanishing point Dp corresponds to the travel position that is offset from the right side edge LR. FIG. 3B shows perspective images V2R and V2L in which the vanishing point Dp corresponds to the travel position shifted to the left side edge LL, contrary to FIG. 3C.

  In addition, the perspective images V2R and V2L are images in which the three band images Rb are arranged in parallel at intervals from each other as described above. At this time, in the present embodiment, the intervals dR and dL of the band images Rb in the perspective images V2R and V2L are set as shown in FIGS. 3B and 3C. That is, the narrower the distance in the left-right direction D1 between the pair of perspective images V2R, V2L and the vanishing point Dp is set. Thereby, among the pair of perspective images V2R and V2L, the interval between the band images Rb in the perspective image corresponding to the side edge closer to the traveling position is the band image in the perspective image corresponding to the side edge farther in the traveling position. It is set to be narrower than the interval of Rb. In the example of FIG. 3B, the distance dL between the band images Rb in the left perspective image V2L corresponding to the left side edge LL near the travel position is the right perspective corresponding to the right side edge LR far from the travel position. It is narrower than the interval dR of the band image Rb in the image V2R. In the example of FIG. 3C, the interval dR between the band images Rb in the right perspective image V2R corresponding to the right side edge LR whose travel position is near is the left side corresponding to the left side edge LL whose travel position is far away. It is narrower than the interval dL of the band image Rb in the perspective image V2L. FIGS. 1B and 1C show how the interval between the band images Rb decreases as the distance between the right perspective image V2R and the vanishing point Dp decreases. At the same time, it is shown that the distance between the band images Rb increases as the distance between the left perspective image V2L and the vanishing point Dp increases.

  As described above, the movement of the vanishing point Dp in the perspective images V2R and V2L displayed as a stereoscopic virtual image and the change in the interval dR between the band images Rb are the rectangular shapes of the pair of second indicators 122 and 123. The following image display is performed on the display surface.

  First, on the display surface of each of the second displays 122 and 123, a trapezoidal vertical stripe image which is composed of three bands extending vertically in parallel with each other and is tapered toward the first display 121 as a whole. Are displayed as original images of the perspective images V2R and V2L. On the display surface, a band of a vertical stripe image is displayed by light emission, and other portions are darkened.

  In the perspective images V2R and V2L corresponding to the traveling position in the center of the lane shown in FIG. 3A, as shown in the optical path diagram on the left side in the figure, the substantially same images at substantially the same positions in the depth direction. Displayed in width. At this time, the intervals between the band images Rb are also substantially the same. Such perspective images V2R and V2L are realized by displaying a vertical stripe image in a region having a predetermined width including the center in the direction along the optical axis A on the display surface of each of the second indicators 122 and 123.

  As shown in FIG. 3B, when the traveling position is shifted to the left side of the lane, the left perspective image V2L has a narrow inclination of the upper and lower perspective lines PL and the interval dL of the band image Rb is narrowed. As shown in the optical path diagram on the left side of the figure, the depth direction is displayed close to the back side. At the same time, the perspective image V2R on the right side is displayed while the inclination of the upper and lower perspective lines PL becomes gentle and the interval dR of the band image Rb is narrowed, and is brought closer to the near side in the depth direction. As a result, the vanishing point Dp moves to the left. The above-described change in the left perspective image V2L causes the slope of the upper and lower hypotenuses of the trapezoidal vertical stripe image on the display surface of the second display 123 on the left side, and the interval between the bands of the vertical stripe image. This is realized by narrowing the display closer to the first display 121. At this time, no image is displayed in the end region far from the first display 121 on the display surface of the second display 123 on the left side, and only a part of the display surface is as described above. It is used to display vertical stripe images with narrow band intervals. In addition, the change in the right perspective image V2R as described above causes the slope of the upper and lower hypotenuses of the trapezoidal vertical stripe image on the display surface of the second display 122 on the right side to be reduced, and This is realized by widening the interval on the side away from the first display 121 and displaying it. When the vanishing point Dp is closest to the left side, the entire display surface of the second display 122 on the right side is used for displaying a vertical stripe image.

  As shown in FIG. 3C, when the traveling position is shifted to the right side of the lane, the right perspective image V2R has a narrow inclination of the upper and lower perspective lines PL and a narrower distance dR between the band images Rb. As shown in the optical path diagram on the left side of the figure, the depth direction is displayed close to the back side. At the same time, the left perspective image V2L is displayed while the inclination of the upper and lower perspective lines PL becomes gentle and the interval dL of the band image Rb is narrowed and is brought closer to the near side in the depth direction. As a result, the vanishing point Dp moves to the right. The above change in the right perspective image V2R causes the slope of the upper and lower hypotenuses of the trapezoidal vertical stripe image on the display surface of the second display 122 on the right side, and the interval between the bands of the vertical stripe image. This is realized by narrowing the display closer to the first display 121. At this time, no image is displayed in the end area far from the first display 121 on the display surface of the second display 123 on the right side, and only a part of the display surface is as described above. It is used to display vertical stripe images with narrow band intervals. Further, the above change in the left perspective image V2L causes the slope of the upper and lower hypotenuses of the trapezoidal vertical stripe image on the display surface of the second display 123 on the left side, and the band of the vertical stripe image. This is realized by widening the interval on the side away from the first display 121 and displaying it. When the vanishing point Dp is closest to the right side, the entire display surface of the second display 123 on the left side is used for displaying a vertical stripe image.

  As described above, in the present embodiment, the second display devices 122 and 123 cause the display images on the respective display surfaces to converge to the vanishing point Dp and be displayed in the display area AR as the perspective images V2R and V2L. The display image on the display surface is changed according to the position of the vanishing point Dp that moves following the travel position.

  In the present embodiment, the pair of second indicators 122 and 123 displays the pair of perspective images V2R and V2L in colors according to the distances from the left and right side edges LR and LL of the traveling position. That is, when the driving position is near the center of the lane, two perspective images V2R and V2L are displayed in blue indicating safety, and when the driving position approaches the left or right side edge to some extent, orange indicating a warning, A perspective image corresponding to the approaching side is displayed, and when approaching the side edge, the perspective image is displayed in red meaning danger. The display color is not limited to this, and any specific color may be used as long as it helps the passenger to grasp the transition state of the vehicle.

  In addition, in the present embodiment, when a perspective image is displayed in red, a message telling the danger is displayed in the information image V1, as shown in FIG. 1B. In the example of FIG. 1B, the right perspective image V2R is displayed in red and the message “Right lane approaching!” Is displayed.

  Furthermore, in the present embodiment, the information acquisition unit 11 represents position information that represents the travel position in the left-right direction D1 in the travel lane R and also represents the orientation of the vehicle C in the vertical direction D3 according to the inclination of the travel lane R. Is configured to get. Then, the pair of second displays 122 and 123 displays the pair of perspective images V2R and V2L by moving the vanishing point Dp up and down according to the inclination represented by the position information. FIG. 4 illustrates perspective images V2R and V2L when the vehicle C goes down a slope. FIG. 4 (a) shows perspective images V2R and V2L when the slope of the travel lane R is horizontal, and FIG. 4 (b) shows the slope of the travel lane R as a downward slope. Perspective images V2R and V2L are shown. In either case, the vehicle C is traveling in the center of the lane.

  As shown in FIG. 4B, the two second indicators 122 and 123 indicate that the vanishing point Dp is higher than the center in the vertical direction D3 when the position information indicates a downward slope. A pair of perspective images V2R and V2L are displayed in a downward direction. On the other hand, although not shown in the figure, when the position information indicates an upward inclination, the two second indicators 122 and 123 raise the vanishing point Dp above the center in the vertical direction D3 and a pair of perspectives. Images V2R and V2L are displayed.

  The disappearance of the vanishing point Dp is realized by displaying a trapezoidal vertical stripe image on the display surface of each of the second indicators 122 and 123 with the upper side of the lower side of the lower side and the lower side of the lower side of the display being loosened. The increase in Dp is realized by displaying a trapezoidal vertical stripe image on the display surface of each of the second indicators 122 and 123 with a gentler slope on the upper side and a lower slope on the lower side.

  According to the HUD device 1 of the first embodiment described above, the vanishing point Dp at which the pair of perspective images V2R and V2L converge corresponds to the travel position. With the pair of perspective images V2R and V2L, the passenger can intuitively and easily grasp the travel position in the left-right direction D1 in the travel lane R, that is, the transition state in the left-right direction D1 of the vehicle C in the travel lane R. Can do.

  In addition, according to the HUD device 1 of the first embodiment, a pair of perspective images V2R and V2L are configured by a simple image representation of a plurality of band images Rb extending in the vertical direction D3. In the first embodiment, this simplifies information processing related to image display.

  Further, according to the HUD device 1 of the first embodiment, the distances dR and dL between the band images Rb included in the perspective images V2R and V2L are displayed smaller as the distance between the perspective images V2R and V2L and the vanishing point Dp is shorter. Therefore, the occupant can more intuitively and easily grasp the transition state in the left-right direction D1 of the vehicle C in the travel lane R by the widths dR and dL of the band images Rb in the perspective images V2R and V2L. it can.

  Further, according to the HUD device 1 of the first embodiment, the pair of perspective images V2R and V2L are displayed in the display area AR formed in front of the windshield 3, so that the passenger can easily see the passenger image. The transition state in the left-right direction D1 of the vehicle C in the travel lane R can be grasped more intuitively and easily.

  In addition, according to the HUD device 1 of the first embodiment, the perspective images V2R and V2L are three-dimensional virtual images that are located closer to the outside in the left-right direction D1, so that the occupant is in the driving lane R. The travel position can be recognized with depth, and the transition state of the vehicle in the lateral direction in the travel lane can be grasped more intuitively and easily.

  Further, according to the HUD device 1 of the first embodiment, changes in the perspective images V2R and V2L due to the movement of the vanishing point Dp following the movement of the traveling position are displayed on the display screens of the second indicators 122 and 123. Realized by changes in As a result, changes in the perspective images V2R and V2L are expressed only by image representation, and the mechanical structure of the HUD main body 12 is simplified.

  Further, according to the HUD device 1 of the first embodiment, the rider can set the left-right direction D1 of the vehicle C by the pair of perspective images V2R, V2L that converge to the vanishing point Dp corresponding to the direction of the vertical direction D3 of the vehicle C. In addition to the transition state, it is possible to intuitively and easily grasp the inclination of whether the traveling lane R is up or down.

  Further, according to the HUD device 1 of the first embodiment, the perspective images V2R, V2L are displayed in a color corresponding to the distance from the vanishing point Dp, so that the occupant is in the left-right direction D1 of the vehicle C in the travel lane R. Can be grasped more intuitively and easily.

  Next, a vehicle display device according to a second embodiment of the present invention will be described with reference to FIGS.

  FIG. 5 is a diagram showing a schematic view of the HUD device, which is the second embodiment of the vehicle display device of the present invention, viewed from above, together with an image displayed on the HUD device. FIG. 6 is a view showing a rotation mechanism of the support base shown in FIG. 5 and 6, the same components as those shown in FIGS. 1 to 3 are given the same reference numerals as those in FIGS. 1 to 3. A duplicate description of the components is omitted.

  The HUD device 2 shown in FIG. 5 includes a support base 211 in which the HUD main body 21 supports the pair of second indicators 122 and 123 so as to be rotatable around a shaft 211a extending in the vertical direction. Yes. In the present embodiment, the vanishing point Dp is displayed in the display area AR when the pair of second indicators 122 and 123 are supported at the initial position shown in FIG. A trapezoidal vertical stripe image similar to that in the first embodiment, which is set so as to be positioned approximately at the center of the pair of perspective images V2R and V2L, is displayed on each display surface. When the travel position represented by the position information acquired by the information acquisition unit 11 changes, the support base 211 rotates so that the vanishing point Dp moves following the travel position in the display area AR.

  In the present embodiment, as shown in FIGS. 5B and 5C, when the traveling position approaches the right side edge LR, the support base 211 moves toward the left side in the left-right direction D1. It rotates in the rotation direction D4 by an angle corresponding to the degree of approach. At this time, as shown in the optical path diagram on the left side of the drawing, the left perspective image V2L changes so as to open outward in the left-right direction D1, and the right perspective image V2R closes inward. As a result, in the right perspective image V2R, the inclination of the upper and lower perspective lines PL becomes tight and the interval between the band images Rb is apparently narrowed. At the same time, in the left perspective image V2L, the inclination of the upper and lower perspective lines PL becomes gentle and the interval between the band images Rb is apparently widened. As a result, the vanishing point Dp moves to the right.

  Conversely, when the traveling position approaches the left side edge LL, although not shown in the figure, the support base 211 rotates in the rotation direction toward the right side in the left-right direction D1 by an angle corresponding to the degree of approach. Move. At this time, the perspective image V2R on the right side changes so as to open outward in the left-right direction D1, and the perspective image V2L on the left side changes to close inward. As a result, in the right perspective image V2R, the inclination of the upper and lower perspective lines PL becomes gentle and the interval between the band images Rb is apparently widened. At the same time, in the left perspective image V2L, the inclination of the upper and lower perspective lines PL becomes tight and the interval between the band images Rb is apparently narrowed. As a result, the vanishing point Dp moves to the left.

  In the present embodiment, the rotation of the support base 211 is performed by the rotation mechanism shown in FIG. A gear 211b that rotates around the shaft 211a is fixed to the support base 211, and the support base 211 is configured to rotate together with the gear 211b. Further, a worm gear 211c is engaged with the gear 211b, and the worm gear 211c is rotationally driven by a stepping motor 211d. The stepping motor 211d rotationally drives the worm gear 211c with the rotation direction and the rotation amount corresponding to the travel position represented by the position information acquired by the information acquisition unit 11, whereby the gear 211b rotates, and the support base 211 as described above. Is rotated.

  As described above, in the present embodiment, the pair of second indicators 122 and 123 is configured so that the display image on the display surface converges to the vanishing point Dp and is displayed in the display area AR as the perspective images V2R and V2L. It is configured to change the orientation of the display surface according to the position of the vanishing point Dp. By changing the orientation of the display surface, the optical path from the display surface toward the windshield 3 is changed as shown in FIG. By this change of the optical path, the vanishing point Dp follows the travel position and moves in the display area AR, as in the first embodiment described above. In addition, due to the change in the optical path, the interval between the band images Rb in the perspective images V2R and V2L is widened or narrowed.

  Here, a detailed description of the mechanism for moving the vanishing point Dp up and down is omitted. The vanishing point Dp is vertically moved by rotating the support base 211 around the rotation axis 211a and the axis orthogonal to the optical axis A by a mechanism equivalent to the mechanism shown in FIG. Realized.

  Also with the HUD device 2 of the second embodiment described above, the passenger can intuitively and easily grasp the transition state of the left-right direction D1 of the vehicle C in the travel lane R, as in the first embodiment described above. It goes without saying that you can do it.

  Further, according to the HUD device 2 of the second embodiment, the change of the perspective images V2R and V2L due to the movement of the vanishing point Dp following the movement of the traveling position changes the orientation of the display surface of the second display devices 122 and 123. Is realized. Thereby, in this embodiment, the image displayed on the 2nd indicator 122,123 is fixed, and simplification of the information processing concerning an image display is achieved.

  As mentioned above, although this invention was demonstrated and mentioned with preferable embodiment, the display apparatus for vehicles of this invention is not limited to the structure of these embodiment.

  For example, in the first and second embodiments described above, as an example of the vehicle display device according to the present invention, the perspective images V2R and V2L are displayed as virtual images in the display area AR formed in front of the windshield 3. HUD devices 1 and 2 are illustrated. However, the vehicle display device referred to in the present invention is not limited to this, and is, for example, an image display device that displays a perspective image in a display area in a display screen that is disposed at a position where a passenger can view. Also good.

  In both the first and second embodiments described above, the HUD device 1 having the first display 121 and the pair of second indicators 122 and 123 is an example of the vehicle display device according to the present invention. 2 is illustrated. However, the vehicle display device referred to in the present invention is not limited to this, and may be, for example, a HUD device having one display device having a horizontally long display surface in the left-right direction D1. In this case, an original image of a pair of perspective images is displayed at both ends of the horizontally long display surface. Furthermore, in order to make these pair of perspective images a three-dimensional virtual image so as to be located closer to the outside in the left-right direction, a prism or the like is arranged in front of the display surface to refract the projection light from the display surface. You may make it go to a windshield.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, those skilled in the art can implement various modifications in accordance with conventionally known knowledge without departing from the scope of the present invention. Of course, such modifications are included in the scope of the present invention as long as the configuration of the vehicle display device of the present invention is provided.

1, 2 HUD device (Vehicle display device)
3 Windshield 11 Information acquisition unit 12, 21 HUD body (image display unit)
121 1st display 122,123 2nd display 211 Support stand AR display area C Vehicle R Driving lane Rb Band image D1 Left-right direction D3 Vertical direction Dp Vanishing point V2R, V2L Perspective image dR, dL interval

Claims (9)

A display device for a vehicle that displays an image representing a traveling position in a left-right direction in a traveling lane in which a vehicle is traveling in a display area,
An information acquisition unit for acquiring position information representing the travel position;
An image display unit configured to oppose and display a pair of perspective images that converge to a vanishing point corresponding to the travel position indicated by the position information in the display region at both ends in the left-right direction of the display region; A vehicle display device characterized by the above.   The vehicle display device according to claim 1, wherein the pair of perspective images is an image including a plurality of band images that are arranged in parallel with a space therebetween and extend in the vertical direction.   3. The display according to claim 2, wherein the image display unit displays the interval between the plurality of band images included in the perspective image as the distance between the perspective image and the vanishing point is shorter. Vehicle display device. The display area is formed in front of the windshield of the vehicle;
The vehicle display device according to claim 1, wherein the image display unit displays the pair of perspective images as a virtual image in the display area.   The vehicular display device according to claim 4, wherein the perspective image is a virtual image positioned closer to the outside in the left-right direction. The image display unit has a pair of displays provided with a display surface for displaying the perspective image,
The display unit displays the display image on the display surface according to the position of the vanishing point so that the display image on the display surface converges on the vanishing point and is displayed as the perspective image in the display area. The vehicle display device according to claim 1, wherein the vehicle display device is changed. The image display unit has a pair of displays provided with a display surface for displaying the perspective image,
The display changes the direction of the display surface according to the position of the vanishing point so that the display image on the display surface converges to the vanishing point and is displayed as the perspective image in the display area. The vehicle display device according to claim 1, wherein the vehicle display device is configured as described above. The information acquisition unit is configured to acquire position information that represents a travel position in the left-right direction in the travel lane and also represents a vertical direction of the vehicle according to an inclination of the travel lane,
The image display unit displays a pair of perspective images converging to the vanishing point corresponding to the travel position and the direction indicated by the position information in the display area, opposite to each other in the left and right direction of the display area. The vehicular display device according to any one of claims 1 to 7, wherein the vehicular display device is configured as described above.   The vehicle display device according to claim 1, wherein the image display unit displays the perspective image in a color corresponding to a distance from the vanishing point.

Images