JP2007326419A - Display unit for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display unit for a vehicle capable of 3D displaying information including the details of one's own vehicle in the longitudinal direction in the longitudinal direction of the own vehicle. <P>SOLUTION: This display unit 1 for displaying information including the details of the own vehicle 100 in the longitudinal direction includes a transmission screen 3 and a projector 2 for projecting the information onto the transmission screen 3 as an optical image 4 from behind the transmission screen 3. The transmission screen 3 is provided with a concave portion 31 where at least a portion of the transmission screen 3 is dented toward therebehind and is disposed so that the optical image 4 is viewed as a real image which is dented to the front in the longitudinal direction. This enables the information including the details on the longitudinal direction of the own vehicle to be stereoscopically displayed in the longitudinal direction of the own vehicle. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a display device for a vehicle that displays information including the content in the front-rear direction of the host vehicle.

  In recent years, advanced functions of vehicles have progressed, and information including content in the front-rear direction (depth direction) of the host vehicle has increased. On the other hand, the display device for vehicles is generally configured to display these information two-dimensionally.

  For example, in auto cruise control that performs constant speed driving control on a highway or the like and control that maintains a constant inter-vehicle distance, the set value of the inter-vehicle distance between the host vehicle and the preceding vehicle that is information including the content in the front-rear direction In a vehicle display device, two-dimensional display is performed. Specifically, the host vehicle and the preceding vehicle are each displayed as a horizontal icon on the vehicle display device, and a radar waveform and a set value of the inter-vehicle distance are displayed therebetween.

  However, in the above-described vehicle display device, the preceding vehicle exists three-dimensionally in front of the own vehicle, whereas the own vehicle and the preceding vehicle are two-dimensionally displayed as horizontal icons. For this reason, it is difficult for the driver to intuitively recognize the set value of the inter-vehicle distance including the content in the front-rear direction of the host vehicle from the above-described vehicle display device.

  This problem is not limited to the set value of the inter-vehicle distance, but is a problem common to information including the content in the front-rear direction of the host vehicle, such as rear monitoring information and rear side monitoring information.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a vehicle display device that can display information including the content in the front-rear direction of the host vehicle in a three-dimensional manner in the front-rear direction of the host vehicle. To do.

  In order to achieve the above object, the present invention employs the following technical means.

  The display device for a vehicle according to claim 1 is a display device for a vehicle that displays information including the content in the front-rear direction of the host vehicle, and includes a transmissive screen and a transmissive screen from the back side of the transmissive screen. A projector that projects information as an optical image, and the transmissive screen has a concave portion in which at least a part of the transmissive screen is recessed backward, and the optical image is viewed as a real image that is recessed forward in the front-rear direction. It is characterized by being arranged in.

  In this configuration, the projector projects information including the content in the front-rear direction of the host vehicle on the transmissive screen as an optical image, and the transmissive screen includes a concave portion in which at least a part is recessed to the rear side. The image is viewed as a real image recessed forward in the front-rear direction of the host vehicle. Thereby, the information including the content of the front-back direction of the own vehicle can be displayed in three dimensions in the front-back direction of the own vehicle.

  The vehicle display device according to claim 2 is a vehicle display device that displays information including the content in the front-rear direction of the host vehicle, and is arranged in an opening provided below the windshield in the instrument panel. A transmissive screen, a projector that projects information as an optical image from behind the transmissive screen to the transmissive screen, and a reflective member that reflects the display light of the optical image and visually recognizes it as a virtual image. The screen is characterized in that at least a part of the transmissive screen is provided with a concave portion that is recessed backward, and the optical image is viewed as a virtual image that is recessed forward in the front-rear direction.

  In this configuration, the projector causes the transmissive screen to project information including the content in the front-rear direction of the host vehicle as an optical image, the reflecting member causes the optical image to be viewed as a virtual image, and the transmissive screen The optical image is visually recognized as a virtual image that is recessed forward in the front-rear direction of the host vehicle. Thereby, the information including the content of the front-back direction of the own vehicle can be displayed in three dimensions in the front-back direction of the own vehicle.

  The vehicle display device according to a third aspect is characterized in that the reflection member is formed on the inner surface of the windshield.

  Even in this configuration, the above-described effects can be obtained.

  According to another aspect of the vehicle display device of the present invention, the projector includes a magnifying lens that magnifies and projects an optical image on the transmissive screen, and reflects the display light from the projector to the transmissive screen so as to be optical on the transmissive screen. A flat mirror for projecting an image is provided.

  In this configuration, the projector includes a magnifying lens that magnifies and projects an optical image onto a transmissive screen, and includes a plane mirror that reflects display light from the projector onto the transmissive screen and projects the optical image onto the transmissive screen.

  With this magnifying lens, the optical image projected on the transmissive screen is magnified in proportion to the length of the optical path between the projector and the transmissive screen. Therefore, the plane mirror can increase the length of the optical path between the projector and the transmissive screen without increasing the distance between them, and the optical image projected on the transmissive screen can be further enlarged. Become. As a result, the optical image can be made larger while obtaining the above-described effect without increasing the distance between the projector and the transmission screen.

  The vehicle display device according to claim 5, wherein the concave portion is disposed at a position where the concave portion is most recessed to the rear side in the transmissive screen, and the front side of the transmissive screen from the first end portion of the first plane. A second plane extending to the front side, and an object on the far side in the front-rear direction in the optical image is visually observed on the front side using the first plane, and the ground in the optical image is utilized using the second plane. The vehicle is configured to be viewed on the lower side in the vertical direction of the host vehicle.

  In this configuration, the object on the far side in the optical image is visually observed on the front side in the front-rear direction of the host vehicle using the first plane, and the ground in the optical image is lowered in the up-down direction of the host vehicle using the second plane. Make them visible on the side. Thereby, since the object and the ground on the far side can be viewed more stereoscopically in the front-rear direction of the host vehicle, information including the content of the front-rear direction of the host vehicle is more three-dimensionally displayed in the front-rear direction of the host vehicle. Can be displayed.

  According to a sixth aspect of the present invention, the vehicular display device is configured such that an object on the rear side of the own vehicle in the optical image is visually observed on the front side using the first plane.

  In this configuration, the object on the rear side of the host vehicle in the optical image is viewed on the front side in the front-rear direction of the host vehicle using the first plane. For this reason, the information including the content of the back side of the own vehicle can be displayed more three-dimensionally in the front-rear direction of the own vehicle.

  The vehicle display device according to claim 7, wherein the concave portion has a third plane extending from the second end of the first plane to the front side of the transmissive screen, and a transmissive type from the third end of the first plane. A fourth plane extending to the front side of the screen, and the left side of the host vehicle in the optical image is visually observed on the left side in the left-right direction of the host vehicle using the third plane, and the target in the optical image is displayed. An object on the right side of the vehicle is configured to be viewed on the right side in the left-right direction using the fourth plane.

  In this configuration, the object on the left side of the host vehicle in the optical image is viewed on the left side in the left-right direction of the host vehicle using the third plane, and the object on the right side of the host vehicle in the optical image is used on the fourth plane. To the left and right side. As a result, the left object and the right object can be distinguished from each other on the left and right and viewed in three dimensions in the front-rear direction. For this reason, the information including the content in the front-rear direction of the host vehicle can be displayed three-dimensionally in the front-rear direction of the host vehicle by distinguishing between the left target and the right target.

  The display device for a vehicle according to claim 8 is characterized in that the optical image includes equidistant lines that calibrate the distance between the far side and the host vehicle.

  By using the equidistant lines, information including the content in the front-rear direction of the host vehicle can be displayed more clearly and three-dimensionally in the front-rear direction of the host vehicle.

  Hereinafter, a combination meter 1 which is a display device for a vehicle according to the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a schematic diagram showing an overall configuration of a combination meter 1 that is a vehicle display device according to a first embodiment of the present invention.

  2A is an enlarged front view of the transmission screen 3 in FIG. 1, and FIG. 2B is a cross-sectional view taken along the line IIB-IIB in FIG.

  FIG. 3 is a front view of the optical image 4 projected on the transmission screen 3 shown in FIG.

  FIG. 4 is a circuit configuration diagram illustrating an electrical circuit configuration of the combination meter 1 which is the vehicle display device according to the first embodiment of the present invention.

  The combination meter 1 according to the first embodiment of the present invention is disposed in front of the driver's seat of the host vehicle 100 and displays information including the contents of the host vehicle 100 in the front-rear direction (left-right direction in FIG. 1). In the present embodiment, in the auto-cruise control that performs the control of constant speed driving on a highway or the like and the control to maintain a constant inter-vehicle distance, the set value 43 (FIG. 3) of the inter-vehicle distance between the host vehicle 100 and the preceding vehicle is It is displayed as information including the content of the host vehicle 100 in the front-rear direction.

  The combination meter 1 includes a projector 2 having a magnifying lens 21, a plane mirror 22, and a transmissive screen 3. The projector 2 projects information as an optical image 4 on the transmissive screen 3 from the back side (right side in FIG. 1) of the transmissive screen 3, and includes a liquid crystal panel and a liquid crystal projector provided with a light source that transmits the light. Consists of

  The magnifying lens 21 magnifies and projects the optical image 4 on the transmissive screen, and the plane mirror 22 reflects the display light from the projector 2 to the transmissive screen 3 and projects the optical image 4 on the transmissive screen 3. The optical image 4 projected on the transmissive screen 3 is magnified in proportion to the length of the optical path between the projector 2 and the transmissive screen 3 by the magnifying lens 21. Accordingly, the plane mirror 22 can increase the length of the optical path between the projector 2 and the transmission screen 3 without increasing the distance between them, and the optical image 4 projected on the transmission screen 3 can be further enlarged. It becomes possible to do.

  Although only one plane mirror 22 is shown in FIG. 1, the optical image 4 can be further enlarged by providing a plurality of plane mirrors 22.

  The transmissive screen 3 is disposed in the opening 51 of the instrument panel 5 and is configured to transmit and diffuse display light from the projector 2 and project it as a high-contrast optical image 4. The transmissive screen 3 is formed as a recess 31 that is recessed to the rear side (right side in FIGS. 1 and 2B).

  The combination meter 1 is configured so that the front in the front-rear direction of the host vehicle 100 corresponds to the rear side of the transmission screen 4 (the right side in FIGS. 1 and 2B). Since the transmissive screen 4 is formed as the recess 31, the optical image 4 is viewed as a real image that is recessed forward (rightward in FIG. 1) of the host vehicle 100.

  Further, the left side, the right side, the upper side, and the lower side in FIG. 1 correspond to the rear, front, upper, and lower sides of the host vehicle 100, respectively. Further, the left side, the right side, the upper side, and the lower side in FIG. 2A correspond to the left side, the right side, the upper side, and the lower side of the host vehicle 100, respectively, and the left side and the right side in FIG. These correspond to the rear and front of the host vehicle 100, respectively.

  The recess 31 of the transmissive screen 3 includes a first plane 32, a second plane 33, a third plane 34, a fourth plane 35, and a fifth plane 36. The first plane 32 is disposed at a position that is substantially centered on the upper side of the transmissive screen 3 and is most concave on the rear side (right side in FIGS. 1 and 2B).

  The second plane 33 is disposed below the first plane 32 and extends from the first end 32a to the front side of the transmissive screen 3 (the direction of the left side in FIGS. 1 and 2B). . The third plane 34 is disposed on the left side of the first plane 32 and extends from the second end portion 32 b to the front side of the transmissive screen 3. The fourth plane 35 is disposed on the right side of the first plane 32 and extends from the third end 32 c to the front side of the transmissive screen 3. The fifth plane 36 is disposed on the upper side of the first plane 32 and extends from the fourth end 32 d to the front side of the transmissive screen 3.

  The first plane 32 projects an object on the front side (right side in FIG. 1) of the host vehicle 100 in the optical image 4, and the second plane 33 projects the ground that is the target on the lower side of the host vehicle 100 in the optical image 4. Project, that is, project an image of the ground. The third plane 34 projects the object on the left side of the host vehicle 100 in the optical image 4, the fourth plane 35 projects the object on the right side of the host vehicle in the optical image 4, and the fifth plane 36 projects the optical image 4. The object on the upper side of the own vehicle in is projected, that is, the object that makes the sky image is projected.

  As described above, the concave portion 31 of the transmissive screen 3 is formed to be recessed toward the back side of the transmissive screen 3. For this reason, the optical path length between the projector 2 and the transmissive screen 3 differs from the first plane 32 to the fifth plane 36, and an optical path length error occurs. However, if the optical path length is increased by the magnification ratio of the magnifying lens 21 and the number of plane mirrors 22, the ratio of the optical path length error can be reduced, and the out-of-focus blur of the optical image 4 can be reduced. it can.

  Further, the transmissive screen 3 has a high three-dimensional compatibility, that is, the optical image 4 is not easily blurred due to an error in the optical path length, for example, a transmissive screen (BOS-C0451) of a blue ocean screen manufactured by Nitto Resin Co., Ltd. ) Can be used to reduce the out-of-focus blur of the optical image 4.

  As shown in FIG. 3, the optical image 4 projected on the transmission screen 3 includes an icon 41, an equidistant line 42, a setting value 43, a setting scale 44, a radar waveform 45, and a vehicle speed 46. The icon 41 is a schematic view of the front traveling vehicle, which is a target on the front side of the host vehicle 100 in the optical image 4, viewed from the rear, and the icon 41 is projected onto the first plane 32 and viewed.

  The equidistant line 42 is used to calibrate the distance between the icon 41 indicating the far front vehicle and the host vehicle 100, and is indicated by the second plane 33, the third plane 34, the fourth plane 35, and the broken line. It forms in the 1st plane 32 inside edge part 32a-32d. The fifth plane 36 is an image of the sky, and since there is no display object, it is displayed as a black background. On the other hand, since there is no display object on the third plane 34 and the fourth plane 35, it is not necessary to provide the equidistant line 42, but in FIG. 3, the optical image 4 is more three-dimensional in the front-rear direction of the host vehicle 100. Therefore, equidistant lines 42 are also provided on the third plane 34 and the fourth plane 35.

  The set value 43 indicates the distance between the set own vehicle 100 and the preceding vehicle, and the set scale 44 indicates a scale that conceptually represents the position of the set value 43 in the optical image 4.

  The radar waveform 45 conceptually represents the millimeter wave radar emitted from the host vehicle 100 to the preceding vehicle. In the auto cruise control, the distance between the host vehicle 100 and the preceding vehicle is detected by a millimeter wave radar emitted from the host vehicle 100 to the preceding vehicle, and the distance between the vehicles is controlled to be maintained at the set value 43. The vehicle speed 46 displays the vehicle speed of the host vehicle 100.

  The radar waveform 45 and the setting scale 44 inside the setting scale 44 are displayed in blue with a black background, and the other icons 41 and the like are displayed in white with a black background.

  Next, an electric circuit configuration of the combination meter 1 which is a vehicle display device will be described with reference to FIG.

  Power is always supplied from the battery 12 to the control device 8 constituted by a microcomputer or the like. The ignition switch 11 is connected so that its operating state (ON or OFF) can be detected, and the speed sensor 9 for detecting the vehicle speed of the host vehicle 100 and the inter-vehicle distance setting switch 10 for setting the inter-vehicle distance can input these detection signals. Connected to. The projector 2 is also connected to the control device 8.

  Hereinafter, the operation of the combination meter 1 which is the vehicle display device according to the present embodiment in the above configuration will be described.

  When the ignition switch 11 is turned on by the driver, the control device 8 detects it and starts operation. That is, in FIG. 2, the vehicle speed of the host vehicle 100 is calculated based on the output signal from the speed sensor 9, and the projector 2 is operated based on these. That is, the projector 2 emits display light representing the vehicle speed 46.

  When the host vehicle 100 enters the highway, an unillustrated auto cruise control switch is turned on, and the inter-vehicle distance setting switch 10 is set to a predetermined value, the projector 2 adds to the display light indicating the vehicle speed 46. , The display light representing the icon 41, the equidistant line 42, the setting value 43, the setting scale 44, and the radar waveform 45 are emitted.

  As shown in FIG. 1, the display light emitted from the projector 2 enters the plane mirror 22 according to the optical path P11, and is reflected by the plane mirror 22 toward the transmissive screen 3 along the optical path P12. For this reason, the high-contrast optical image 4 is projected onto the transmissive screen 3, and the display light of the optical image 4 projected onto the transmissive screen 3 is viewed by the driver M as a real image along the optical path P13. That is, the optical image 4 is viewed as an icon 41, an equidistant line 42, a set value 43, a setting scale 44, a radar waveform 45, and a vehicle speed 46, as shown in FIG.

  The icon 41 is projected onto the first plane 32, the radar waveform 45 is projected onto the second plane 33, and the setting value 43 and the setting scale 44 are projected onto the position corresponding to the value of the setting value 43 on the second plane 33. Is done.

  The icon 41 indicates a forward vehicle that is a target on the front side (right side in FIG. 1) of the host vehicle 100 in the optical image 4, and the first plane 32 is the most recessed position on the transmissive screen 3 (FIG. 1 and FIG. 1). 2 (b) on the right side). As a result, the preceding vehicle is stereoscopically viewed as the icon 41 on the front side of the vehicle 100 in the front-rear direction on the transmission screen 3.

  On the other hand, the radar waveform 45 conceptually shows the millimeter wave radar emitted from the host vehicle 100 to the preceding vehicle, and the second plane 33 is disposed below the first plane 32, and the first end of the first plane 32 is The portion 32a extends to the front side of the transmissive screen 3 (the left side surface in FIGS. 1 and 2B). Furthermore, since the second plane 33 is an image of the ground, which is the lower object of the host vehicle 100 in the optical image 4, the radar waveform 45 is an icon indicating a preceding vehicle from the host vehicle 100 along the ground. It is visually observed three-dimensionally toward 41.

  Further, the setting value 43 and the setting scale 44 are projected at a position corresponding to the value of the setting value 43 on the second plane 33. That is, if the setting value 43 is reduced, the setting value 43 and the setting scale 44 in FIG. The scale 44 is projected so as to approach the icon 41, and if the set value 43 is increased, the set value 43 and the set scale 44 are projected so as to move away from the icon 41. As a result, the set value 43 and the setting scale 44 are viewed three-dimensionally in the front-rear direction of the host vehicle 100 between the host vehicle 100 and the icon 41 indicating the preceding vehicle.

  As a result, the set value 43 that is information including the content in the front-rear direction of the host vehicle 100 can be displayed three-dimensionally in the front-rear direction of the host vehicle 100.

  The equidistant line 42 is projected onto the first plane 32, the second plane 33, the third plane 34, and the fourth plane 35 inside the end portions 32 a-32 d indicated by broken lines. Thereby, the setting value 43 which is information including the content of the front and rear direction of the host vehicle can be displayed more clearly and three-dimensionally in the front and rear direction of the host vehicle 100.

  As a result, the driver M can more intuitively recognize the set value 43 that is information including the content of the host vehicle 100 in the front-rear direction.

  Furthermore, since the projector 2 includes the magnifying lens 21 that magnifies and projects the optical image 4 on the transmission screen 3, the optical image 4 is enlarged in proportion to the lengths of the optical paths P11 and P12. Further, the plane mirror 22 makes it possible to further increase the length of the optical paths P11 and P12 between the projector 2 having the magnifying lens 21 and the transmission screen 3 without increasing the distance between them. For this reason, it is possible to further enlarge the optical image 4 projected on the transmissive screen 3 without increasing the distance between the projector 2 and the transmissive screen 3, and as a result, the optical image 4 to be visually recognized by the driver M can be obtained. Can be larger.

  Note that an image captured by a camera (not shown) can be used as the optical image 4. For example, it is possible to project an image of a rear-running vehicle that is a target on the rear side of the host vehicle 100 on the first plane 32. As a result, the following vehicle that is the object behind the host vehicle 100 in the optical image 4 can be viewed on the front side in the front-rear direction of the host vehicle 100 using the first plane 32.

  For this reason, the following vehicle which is information (rear monitoring information) including the contents on the rear side of the host vehicle 100 can be displayed in three dimensions in the front-rear direction of the host vehicle 100. As a result, the driver M can more intuitively recognize the warning for the rear-end collision caused by the following vehicle.

  In addition, the image of the motorbike that is the object on the left rear side of the host vehicle 100 is projected on the third plane 34, and the image of the motorbike that is the object on the right rear side of the host vehicle 100 is projected on the fourth plane 35. It is also possible to configure. As a result, the left rear motorbike and the right rear target motorbike can be distinguished from each other on the left side and the right side, and can be displayed more clearly and three-dimensionally in the front-rear direction of the host vehicle 100.

  For this reason, the motorbike which is information (rear side monitoring information) including the contents in the front-rear direction of the host vehicle 100 is distinguished by the left side and the right side, and more clearly three-dimensionally in the front-rear direction in the front-rear direction of the host vehicle 100. Can be displayed. As a result, the driver M can more intuitively recognize the warning regarding the involvement of the motorbike.

  FIG. 5A is an enlarged front view showing a first modification of FIG. 2A, and FIG. 5B is an optical image 4 projected on the transmission screen 3 shown in FIG. FIG.

  In the first modification, as shown in FIG. 5A, the transmissive screen 3 is not formed as the concave portion 31, and a part of the transmissive screen 3 is formed as the concave portion 31. The combination meter 1 according to this modification is configured to display a departure warning from a lane in a lane keeping support system that controls the host vehicle 100 to travel in the approximate center of the lane (lane) on an expressway or the like. .

  As shown in FIG. 5B, the optical image 4 projected on the transmission screen 3 includes an equidistant line 42, a vehicle speed 46, a mark 47, a lane 48 that is information including the content in the front-rear direction of the host vehicle, and An equidistant auxiliary line 48a is provided. The mark 47 is a mark indicating that the lane keeping support system has started, the lane 48a indicates a lane in which the host vehicle 100 is traveling, and the equidistant auxiliary line 48a indicated by a broken line is deviated from the lane 48a. It is an equidistant line indicating the space.

  The mark 47 is projected onto the first plane 32, the lane 48 is projected onto the boundary between the second plane 33 and the third plane 34, and the boundary between the second plane 33 and the fourth plane 35, and the equidistant auxiliary line 48a is projected. In the transmission screen 3, the projection is projected onto the flat portion excluding the concave portion 31, the second plane 33, and the third plane 34.

  FIG. 5B shows a state in which the host vehicle 100 is traveling substantially in the center of the lane. That is, in the lane keeping support system shown in FIG. 5B, the host vehicle 100 is controlled to travel substantially in the center of the lane indicated by the lane 48a.

  On the other hand, when warning that the own vehicle 100 has deviated to the left side of the lane, the lane 48 moves to the right side and is projected on the transmissive screen 3. That is, the left lane 48 is projected onto the second plane 33, and the right lane 48 is projected onto the flat portion excluding the recess 31 and the third plane 34 in the transmissive screen 3. In this case, the equidistant line 42 is also projected by moving to the right side on the transmissive screen 3.

  On the contrary, when warning that the own vehicle 100 has deviated to the right side of the lane, the lane 48 and the equidistant line 42 are moved to the left side and projected on the transmissive screen 3.

  Therefore, the lane 48 that is information including the content in the front-rear direction of the host vehicle is viewed stereoscopically from the host vehicle 100 forward along the ground.

  The equidistant line 42, the vehicle speed 46, the mark 47, and the lane 48 are displayed in white with a black background, and the equidistant auxiliary line 48a is displayed in a yellow solid line with a black background. In addition, in order to emphasize a space that deviates from the lane 48, the space surrounded by the equidistant line 42 and the equidistant auxiliary line 48a is displayed in light yellow. In this case, when the departure warning is displayed, the lane 48 and the equidistant line 42 are displayed so as to enter the space displayed in light yellow.

  Further, when the lane 48 and the equidistant line 42 are displayed so as to enter the space displayed in this light yellow color, they extend over both the flat portion and the concave portion 31 except for the concave portion 31 in the transmissive screen 3. Projected. For this reason, the display light from the projector 2 is controlled so that the lane 48 and the equidistant line 42 are not distorted and viewed.

  Further, it is possible to project the optical image 4 shown in FIG. 3 onto the concave portion 31 of the transmission screen 3 shown in FIG.

  FIG. 6 is an enlarged front view showing a second modification of FIG.

  In the second modification, as shown in FIG. 6, in the transmissive screen 3, a curved surface 37 is formed instead of the third plane 34, the fourth plane 35, and the fifth plane 36. Thereby, the above-mentioned effect can be acquired.

  Instead of the first plane 32, the second plane 33, the third plane 34, the fourth plane 35, and the fifth plane 36, it is possible to form one curved surface. The effect mentioned above can be acquired also by this.

  As described above, the combination meter 1 that is the vehicle display device according to the present embodiment is a combination meter 1 that displays information including the content in the front-rear direction of the host vehicle 100, and includes the transmission screen 3, the transmission type, and the like. A projector 2 that projects information as an optical image 4 from the back side of the screen 3 to the transmissive screen 3, the transmissive screen 3 includes a recess 31 in which at least a part of the transmissive screen 3 is recessed to the back side, and The optical image 4 is arranged so as to be viewed as a real image recessed forward in the front-rear direction.

  Thereby, the information including the content of the front-back direction of the own vehicle can be displayed in three dimensions in the front-back direction of the own vehicle.

(Second Embodiment)
FIG. 7 is a schematic diagram showing an overall configuration of a combination meter 1 that is a vehicle display device according to a second embodiment of the present invention.

  A combination meter 1 that is a vehicle display device according to the second embodiment is configured as a head-up display device as shown in FIG. That is, the projector 2 projects an optical image 4 as display information on a transmission screen 3 arranged as a head-up display device.

  The display light of the optical image 4 is reflected toward the driver M by the reflection layer 6 which is a reflection member formed on the inner surface of the windshield 7, and is visually recognized by the driver M as a virtual image 4A. It is also possible to form the reflective layer 6 as a semi-transparent half mirror. Further, the reflective layer 6 may be fixed to the instrument panel 5 without forming the reflective layer 6 on the inner surface of the windshield 7, for example.

  Specifically, the display light of the projector 2 is reflected by the plane mirror 22 according to the optical paths P21 and P22, and the optical image 4 is projected on the transmission screen 3. The display light of the optical image 4 is reflected toward the driver M by the reflective layer 6 according to the optical paths P23 and P24, and is visually recognized by the driver M as a virtual image 4A. For example, the virtual image 4A is visually observed as shown in FIG. 3 or FIG.

  The concave portion 31 of the transmissive screen 3 is recessed to the rear side (lower side in FIG. 7) so that the virtual image 4A is viewed in a shape recessed forward (rightward in FIG. 7) in the front-rear direction of the host vehicle 100. Has a shape. Thereby, the effect similar to 1st Embodiment can be acquired.

  As described above, the combination meter 1 that is the vehicle display device according to the present embodiment is a combination meter 1 that displays information including the content in the front-rear direction of the host vehicle 100, and includes the windshield 7 on the instrument panel 5. A transmissive screen 3 disposed in an opening 51 provided below the projector, a projector 2 that projects information as an optical image 4 on the transmissive screen 3 from behind the transmissive screen 3, and a display of the optical image 4. A reflective layer 6 that is a reflective member that reflects light and makes it visible as a virtual image 4A. The transmissive screen 3 includes a concave portion 31 in which at least a part of the transmissive screen 3 is recessed to the rear side. It is configured to be viewed as a virtual image 4A that is recessed forward in the front-rear direction.

  Thereby, the information including the content of the front-back direction of the own vehicle can be displayed in three dimensions in the front-back direction of the own vehicle.

  Note that the present invention is not limited to the above-described example, and combinations thereof and other various modifications are conceivable.

FIG. 1 is a schematic diagram showing an overall configuration of a combination meter 1 that is a vehicle display device according to a first embodiment of the present invention. 2A is an enlarged front view of the transmission screen 3 in FIG. 1, and FIG. 2B is a cross-sectional view taken along the line IIB-IIB in FIG. FIG. 3 is a front view of the optical image 4 projected on the transmission screen 3 shown in FIG. FIG. 4 is a circuit configuration diagram illustrating an electrical circuit configuration of the combination meter 1 which is the vehicle display device according to the first embodiment of the present invention. FIG. 5A is an enlarged front view showing a first modification of FIG. 2A, and FIG. 5B is an optical image 4 projected on the transmission screen 3 shown in FIG. FIG. FIG. 6 is an enlarged front view showing a second modification of FIG. FIG. 7 is a schematic diagram showing an overall configuration of a combination meter 1 that is a vehicle display device according to a second embodiment of the present invention.

Explanation of symbols

1 combination meter (vehicle display device), 2 projector, 21 magnifying lens,
22 plane mirror, 3 transmission screen, 31 recess, 32 first plane 32a first end, 32b second end, 32c third end, 32d fourth end 33 second plane, 34 third plane, 35 first 4 plane, 36 5th plane, 37 curved surface 4 optical image, 4A virtual image, 41 icon, 42 equidistant line, 43 set value 44 setting scale, 45 radar waveform, 46 vehicle speed, 47 mark, 48 lane 48a equidistant auxiliary line DESCRIPTION OF SYMBOLS 5 Instrument panel, 51 Opening part 6 Reflective layer (reflective member), 7 Wind shield, 8 Control apparatus, 9 Speed sensor 10 Inter-vehicle distance setting switch, 11 Ignition switch, 12 Battery 100 Own vehicle

Claims (8)

A display device for a vehicle that displays information including content in the front-rear direction of the host vehicle,
A transmissive screen,
A projector that projects the information as an optical image on the transmissive screen from the back side of the transmissive screen;
The transmissive screen is provided with a concave portion in which at least a part of the transmissive screen is recessed to the rear side, and is arranged so that the optical image is viewed as a real image recessed forward in the front-rear direction. A display device for vehicles. A display device for a vehicle that displays information including content in the front-rear direction of the host vehicle,
A transmissive screen disposed in an opening provided below the windshield in the instrument panel;
A projector that projects the information as an optical image on the transmissive screen from the back side of the transmissive screen;
A reflection member that reflects the display light of the optical image to make it visible as a virtual image;
The transmissive screen includes a recess in which at least a part of the transmissive screen is recessed toward the back side,
A vehicular display device configured to cause the optical image to be viewed as a virtual image recessed forward in the front-rear direction.   The vehicle display device according to claim 2, wherein the reflection member is formed on an inner surface of the windshield. The projector includes a magnifying lens that magnifies and projects an optical image on the transmissive screen,
4. The vehicle according to claim 1, further comprising a plane mirror that reflects display light from the projector onto the transmissive screen and projects an optical image on the transmissive screen. 5. Display device. The recess has a first plane disposed at a position most recessed toward the rear side in the transmission screen, and a second plane extending from the first end of the first plane to the front side of the transmission screen. And
The object on the far side in the front-rear direction in the optical image is visually observed on the front side using the first plane, and the ground in the optical image is viewed on the vehicle using the second plane. The vehicular display device according to any one of claims 1 to 4, wherein the vehicular display device is configured to be viewed on the lower side in the vertical direction.   The vehicular display device according to claim 5, wherein an object on the rear side of the host vehicle in the optical image is viewed on the front side using the first plane. The recess includes a third plane extending from the second end of the first plane to the front side of the transmissive screen, and a third end of the first plane to the front side of the transmissive screen. A fourth plane extending,
An object on the left side of the host vehicle in the optical image is viewed on the left side in the left-right direction of the host vehicle using the third plane, and an object on the right side of the host vehicle in the optical image is The vehicle display device according to claim 5 or 6, wherein the vehicle display device is configured to be viewed on the right side in the left-right direction using four planes.   The vehicle display device according to any one of claims 1 to 7, wherein the optical image includes equidistant lines that calibrate the distance between the far side and the host vehicle.

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