JP6232363B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a display device for a vehicle that is disposed in an instrument panel of a vehicle and forms a virtual image in front of a windshield.

  Conventionally, as a display device for a vehicle, a head-up display device that is provided in an instrument panel and forms a virtual image in front of a windshield of the vehicle has been proposed (for example, see Patent Document 1). The vehicle display device described in Patent Literature 1 includes a display source having a display and a plurality of light emitters arranged in parallel in a direction intersecting the display surface of the display source. The light irradiated by the body is configured to be reflected by the reflecting member. A virtual image facing the front of the passenger is formed by the display source, and a virtual image arranged in the front-rear direction of the vehicle is formed by a plurality of light emitters, and these virtual images are combined.

JP 2011-128450 A

  In such a vehicle display device disclosed in Patent Document 1, if a display similar to the display source is provided instead of the plurality of light emitters, an image can be displayed in a three-dimensional manner. That is, as shown in FIG. 8, a main display 101 for forming a main image P101, a pair of left and right sub-displays 102 and 103 for forming sub-images P102 and P103, and a reflecting member 104 are provided. And a vehicle display device 100 that forms a virtual image composed of a main image P101 and sub-images P102 and P103 in front of the windshield W. In such a vehicular display device 100, the main image P101 faces the occupant, and one end of the sub-images P102 and P103 is adjacent to the main image P101 and the other end is positioned in front of the occupant. The main image P101 is located behind the sub-images P102 and P103, and these images are visually recognized in three dimensions.

  In such a vehicle display device 100, since the sub images P102 and P103 are displayed in a plane, corners are formed between the main image P101 and the sub images P102 and P103, and the main image P101 and the sub image are displayed. There is a possibility that P102 and P103 have no sense of unity and give a sense of incongruity to the passenger. When the sub-images P102 and P103 are configured in this way, there is a limit to the stereoscopic effect that can be expressed by the combination with the main image P101, and the display device for a vehicle that can further improve the stereoscopic effect. Is desired. However, it is difficult to form the display surface of the sub-display with a non-planar surface.

  The objective of this invention is providing the display apparatus for vehicles which can improve a three-dimensional effect.

In order to solve the above problems and achieve the object, the invention described in claim 1 is a display device for a vehicle which is disposed in an instrument panel of a vehicle and forms a virtual image in front of a windshield, The virtual image includes a main image displayed to face the passenger and a sub-image in which one end side is adjacent to the main image and the other end side is positioned in front of the one end side, and forms the main image. A display device having a display surface for forming, a projector for forming the sub-image and a non-planar screen , wherein the main image is a virtual image of the display surface, and the sub-image is the screen A vehicle display device characterized by being a virtual image .

  The invention described in claim 2 is characterized in that, in the invention described in claim 1, the screen is a reflective screen.

  The invention described in claim 3 is the invention described in claim 1, wherein the screen is a transmissive screen.

  The invention described in claim 4 is the invention described in any one of claims 1 to 3, wherein the screen has a curved surface portion.

  The invention described in claim 5 is the invention described in any one of claims 1 to 4, wherein the screen has a plurality of surfaces having different distances from the projector. To do.

  The invention described in claim 6 is the invention according to any one of claims 1 to 5, wherein the screen is formed in a cylindrical shape.

  According to the first aspect of the present invention, since the one end side of the sub image is adjacent to the main image and the other end side is located on the near side, the main image is located on the back side of the sub image, and the main image and the sub image are located. The image is combined and displayed in three dimensions. Furthermore, since the sub-image is formed by the projector and the non-planar screen, the sub-image can be made non-planar. By combining such a sub-image with the main image, Compared to the combined configuration, the stereoscopic effect can be improved. At this time, the screen can be easily made non-planar as compared with the display.

  According to the invention described in claim 2, the configuration of the screen can be simplified.

  According to the third aspect of the present invention, the projector can be disposed on the opposite side of the windshield (or reflecting member) across the screen, and the windshield (or reflecting member) side around the display The configuration can be simplified.

  According to the fourth aspect of the present invention, the main image and the sub image are smoothly connected by forming the curved surface portion on the screen so that one end side of the sub image becomes a concave curved surface when viewed from the main image. The three-dimensional effect can be improved, and an image with a sense of unity can be displayed.

  According to the fifth aspect of the present invention, since the screen has a plurality of surfaces, that is, the screen is formed in a staircase shape, the sub-image is displayed with a plurality of display surfaces. The plurality of display surfaces are arranged side by side in the front-rear direction of the vehicle, and the plurality of screen surfaces are set so that the display surface on one end side is positioned closer to the main image in the crossing direction with the front-rear direction. As a result, the sub-image is visually recognized so as to approach the main image in the crossing direction toward the back side, and the stereoscopic effect can be improved.

  According to the invention described in claim 6, the sub-image formed by the cylindrical screen is displayed so as to surround the main image, and the stereoscopic effect can be improved by enhancing the main image.

It is a side view showing the display for vehicles concerning a 1st embodiment of the present invention. It is a front view which shows an example of the image displayed by the display apparatus for vehicles of FIG. It is a side view which shows the display apparatus for vehicles which concerns on 2nd Embodiment of this invention. It is the (A) side view and (B) top view which show the display apparatus for vehicles which concerns on 3rd Embodiment of this invention. It is a front view which shows an example of the image displayed by the display apparatus for vehicles of FIG. It is a top view which shows the display apparatus for vehicles which concerns on 4th Embodiment of this invention. It is a top view which shows the display apparatus for vehicles which concerns on 5th Embodiment of this invention. It is a top view which shows the display apparatus for vehicles of a prior art.

  Hereinafter, each embodiment of the present invention will be described with reference to the drawings. In the second to fifth embodiments, the same constituent members as those described in the first embodiment and the constituent members having similar functions are denoted by the same reference numerals as those in the first embodiment and the description thereof is omitted.

[First Embodiment]
As shown in FIG. 1, the vehicle display device 1 </ b> A according to the present embodiment includes a display 2, a projector 3, a screen 4 </ b> A, and a reflection member 5, and is disposed in an instrument panel of the vehicle. A virtual image indicating a road condition, a vehicle condition, or the like is formed in front of the windshield W. This virtual image is composed of a main image P1 and a sub image P2 which will be described later.

  The display 2 is a TFTLCD (TFT liquid crystal display device), for example, and is provided on the rear side of the reflecting member 5. The display device 2 displays an image on the display surface 21 directed to the front side so as to form a main image P1 along a plane substantially orthogonal to the front-rear direction of the vehicle (that is, facing the passenger). It is configured.

  The projector 3 is, for example, a liquid crystal projector, and is provided on the rear side of the reflecting member 5 and below the display 2, and projects light onto the screen 4 </ b> A from a projection surface 31 directed obliquely upward (forward and upward). It is configured as follows.

  The screen 4A is a reflective screen, and faces the projector 3 with the front surface 41 facing downward, and has a curved surface portion 42 that is convex upward (that is, concave when viewed from the projector 3). It is formed in a curved surface shape. An image is formed on the front surface 41 of the screen 4A by the light projected by the projector 3, and a sub-image P2 is formed by this image. The sub-image P2 has one end P21 adjacent to the lower end of the main image P1, the other end P22 is located on the rear side (near side) of the one end P21, and the screen 4A has a curved surface portion 42. A convex surface (that is, a concave surface as viewed from the main image P1).

  The reflecting member 5 is, for example, an aspherical mirror that is convex toward the front as a whole, and is configured to reflect light emitted from behind toward the windshield W obliquely upward (upward and backward). .

  An example of display information of the main image P1 formed by the display device 2 as described above and the sub-image P2 formed by the projector 3 and the screen 4A will be described.

  The main image P1 and the sub-image P2 are displayed in conjunction with the car navigation system. As shown in FIG. 2, the main image P1 includes a road display unit P11 indicating the shape of the road, surrounding buildings, and the like, and the progress of the vehicle. A guidance display portion P12 that is an arrow for guiding directions, and the sub-image P2 has a guidance display portion P23. The guide display portion P23 viewed from the passenger is closer to the main image P1 in the vertical direction as it extends from the other end P22 toward the front end P21, and is connected to the guide display portion P12 with a gap. . Therefore, the main image P1 displayed on the back side of the sub-image P2 is recognized as having the lower side on the near side and the upper side on the back side, and the main image P1 and the sub-image P2 are combined and displayed in a three-dimensional manner. . At this time, since the sub-image P2 has a downwardly convex curved surface, the guidance display part P23 is smoothly connected to the guidance display part P12.

  As shown in FIG. 2, when the guidance display parts P12 and P23 indicate a right turn at the intersection C, as the vehicle approaches the intersection C, the guidance display part P23 of the sub-image P2 is gradually displayed from the other end P22 side. As it disappears and shortens in the front-rear direction, the entire road display portion P11 moves downward, so that it is easy to feel the approach of the vehicle to the intersection C.

  According to this embodiment, there are the following effects. That is, the sub-image P2 is formed by the screen 4A having the curved surface portion 42, and the guide display portion P23 is smoothly connected to the guide display portion P12, so that a sense of unity between the main image P1 and the sub-image P2 is produced. The three-dimensional effect can be improved.

  Furthermore, when a sub-image is formed by a display as in the conventional case, a heat radiating member such as a heat sink needs to be provided on the display, whereas the screen 4A does not require a heat radiating member. Therefore, the entire vehicle display device can be reduced in size.

[Second Embodiment]
As shown in FIG. 3, the vehicle display device 1 </ b> B of the present embodiment includes a display 2, a projector 3, a screen 4 </ b> B, and a reflection member 5.

  The screen 4B is a reflective screen and is arranged in the same manner as in the first embodiment. The screen 4B has three reflective surfaces 43a to 43c having different distances from the projector 3, and is formed in a step shape. These reflective surfaces 43a to 43c are arranged so that the distance from the projector 3 increases as going from the most rearward reflective surface 43a to the most frontal reflective surface 43c.

  The sub-image P3 relayed by such a screen 4B has the following shape. That is, the sub-image P3 has three display surfaces P3a to P3c arranged in the front-rear direction, and the display surface closer to one end P31 is arranged closer to the main image P1 in the vertical direction. The sub-image P3 has, for example, the same guidance display unit as that of the first embodiment. When the vehicle approaches the destination point, one display surface corresponds to a predetermined distance (for example, 100 m), It is configured to turn off in order from the display surface.

  According to this embodiment, there are the following effects. That is, since the sub image P3 is formed by the screen 4B having the three reflecting surfaces 43a to 43c and is combined with the main image P1, the rear side of the display surface of the sub image P3 becomes the main image P1 in the vertical direction. It is formed in a close position, can produce continuity between the sub-image P3 and the main image P1, and improve the stereoscopic effect.

[Third Embodiment]
As shown in FIG. 4, the vehicle display device 1 </ b> C of the present embodiment includes a display 2, four projectors 3 a to 3 d, a screen 4 </ b> C, and a reflection member 5.

  The four projectors 3 a to 3 d are disposed on the right side of the display 2, the upper surface projector 3 a disposed above the display 2, the lower surface projector 3 b disposed below the display 2. The left projector 3c and the right projector 3d disposed on the left side of the display 2 are configured.

  The screen 4C is formed in a cylindrical shape having a larger opening on the reflecting member 5 side than the projectors 3a to 3d side, and its outer peripheral surface has a shape obtained by removing the vicinity of the apex of the cone and reflects the inside of the cylinder. It is a reflective screen with a surface.

  Next, the sub image P5 formed by the projectors 3a to 3d and the screen 4C will be described. A sub image upper surface P51 is formed above the main image P4 by the upper surface projector 3a, a sub image lower surface P52 is formed below the main image P4 by the lower surface projector 3b, and a main image P4 is formed by the left surface projector 3c. A sub-image left surface P53 is formed on the left side, a sub-image right surface P54 is formed on the right side of the main image P4 by the right-side projector 3d, and the sub-image P5 is formed by these surfaces P51 to P54. That is, the sub image P5 is displayed so as to surround the main image P4.

  Next, an example of display information of the main image P4 and the sub image P5 will be described. As shown in FIG. 5, the main image P4 and the sub-image P5 display the approaching situation with the vehicle ahead, and the main image P4 includes a speed display unit P41 that displays the current speed of the host vehicle, And an other vehicle display unit P42 that displays the presence of the vehicle on the front side.

  As shown in FIGS. 5A to 5C, the sub image P <b> 5 changes the display position according to the degree of approach between the host vehicle and the front vehicle. That is, when the vehicle is relatively far from the vehicle on the front side, the sub image P5 is displayed in a portion far from the main image P4 as shown in FIG. The sub image P5 is displayed in a portion close to the main image P4 as in 5 (C).

  According to this embodiment, there are the following effects. That is, the sub-image P5 formed by the cylindrical screen 4C surrounds the main image P4, thereby enhancing the main image P4 and improving the stereoscopic effect.

  Further, by changing the display position in accordance with the degree of approach with the front vehicle in the sub-image P5, it becomes easier for the passenger to intuitively understand that the vehicle has approached the front side vehicle, and prompts deceleration to The distance can be kept appropriate.

[Fourth Embodiment]
As shown in FIG. 6, the vehicle display device 1 </ b> D of the present embodiment includes a display device 2, two projectors 3 e and 3 f, two screens 4 Da and 4 Db, and a reflecting member 5.

  The two projectors 3e and 3f are composed of a left surface projector 3e and a right surface projector 3f, and are respectively disposed on the back side of the screens 4Da and 4Db (opposite the reflecting member 5).

  The two screens 4Da and 4Db are composed of a left screen 4Da and a right screen 4Db. The screens 4Da and 4Db are transmissive screens for rear projection, and the whole is formed in a convex curved shape toward the back side.

  The left-side projector 3e and the left-side screen 4Da form a sub-image (not shown) on the left side of the main image (not shown). The right-side projector 3f and the right-side screen 4Db form a sub-image on the right side of the main image. (Not shown) are formed, and these sub-images are curved like the sub-image P2 of the first embodiment.

  According to this embodiment, there are the following effects. That is, since the projectors 3e and 3f are disposed on the back side of the screens 4Da and 4Db, respectively, the configuration on the reflecting member 5 side around the display device 2 can be simplified.

[Fifth Embodiment]
As shown in FIG. 7, the vehicle display device 1 </ b> E of the present embodiment includes a display 2, two projectors 3 e and 3 f, two screens 4 Da and 4 Db, a reflection member 5, and two second reflections. And a member 6.

  The two second reflecting members 6 are, for example, plane mirrors, which are arranged on the back side of the screens 4Da and 4Db, respectively, and their reflecting surfaces 61 are directed to the back side of the screens 4Da and 4Db, so that they are projected by the projectors 3e and 3f. The projected light is reflected toward the back of the screens 4Da and 4Db.

  The projectors 3e and 3f are arranged close to the display device 2 and configured to project light toward the second reflecting member 6.

  According to this embodiment, there are the following effects. That is, by providing the second reflecting member 6 that reflects the light projected by the projectors 3e and 3f toward the screens 4Da and 4Db, the degree of freedom in arranging the projectors 3e and 3f can be improved. In addition, the projectors 3e and 3f can be arranged close to the display 2 to reduce the size of the entire vehicle display device 1E.

  The present invention is not limited to the first to fifth embodiments, but includes other configurations and the like that can achieve the object of the present invention, and the following modifications and the like are also included in the present invention.

  For example, the screen 4A of the first embodiment has a curved surface portion 42, the screen 4B of the second embodiment has a plurality of reflecting surfaces 43a to 43c, and the screen 4C of the third embodiment has a cylindrical shape. Although formed, these structures may be combined as appropriate. That is, for example, a screen having a curved surface portion and a step portion may be used, or a step portion and a curved surface portion may be formed on a cylindrical screen. Further, the transmission type screen may have a curved surface portion, a step portion, and the like and be formed in an appropriate shape.

  In addition, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the invention has been illustrated and described primarily with respect to particular embodiments, but may be configured for the above-described embodiments without departing from the scope and spirit of the invention. Various modifications can be made by those skilled in the art in terms of materials, quantity, and other detailed configurations. Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such is included in this invention.

DESCRIPTION OF SYMBOLS 1A Display apparatus for vehicles 2 Display 3 Projector 4A Screen 42 Curved surface part 5 Reflective member P1 Main image P2 Sub image P21 One end P22 Other end W Windshield

Claims (6)

A display device for a vehicle that is arranged in an instrument panel of a vehicle and forms a virtual image in front of a windshield,
The virtual image includes a main image displayed to face the passenger, and a sub image in which one end side is adjacent to the main image and the other end side is positioned in front of the one end side,
A display having a display surface for forming the main image;
A projector and a non-planar screen for forming the sub-image ,
The vehicle display device, wherein the main image is a virtual image of the display surface, and the sub-image is a virtual image of the screen .   The vehicle display device according to claim 1, wherein the screen is a reflective screen.   The vehicle display device according to claim 1, wherein the screen is a transmissive screen.   The vehicle display device according to claim 1, wherein the screen includes a curved surface portion.   The vehicle display device according to any one of claims 1 to 4, wherein the screen has a plurality of surfaces with different distances from the projector.   The vehicular display device according to claim 1, wherein the screen is formed in a cylindrical shape.

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