JP2008076541A - Display device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device for vehicles in which information can be stereoscopically displayed. <P>SOLUTION: The display device 1 for vehicles is provided with a lens means 5, and a display means 4 displaying information as a display image 42. The lens means 5 is so constituted as to form a real image 52 by condensing the display light of the display image 42 nearer the visual observation side than the lens means 5, and to gradually increase or decrease the distances (LA1+LA2), (LB1+LB2) between the display image 42 and the real image 52 in correspondence to the increase or decrease of the distances LA1, LB1 between the display image 42 and the lens means 5. The display image 42 has a first display region 42A and a second display region 42B and the lens means 5 is obliquely arranged with respect to the display image 42 so as to make the distance LB1 greater than the distance LA1 and to make the real image 52 visually observable. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle display device that displays information.

  In recent years, advanced functions of vehicles have advanced, and information that needs to be displayed has increased. On the other hand, the vehicular display device is configured to display these information two-dimensionally.

  For example, in a car navigation system, a vehicle display device displays two-dimensionally a guidance display (turn-by-turn display) in which route guidance is indicated by an arrow. Specifically, the front side of the host vehicle is displayed in place of the upward arrow.

  However, it is difficult to intuitively recognize the contents of the guidance display including the three-dimensional contents from the two-dimensional display by the vehicle display device described above.

  This problem is not limited to displaying information including three-dimensional contents. For example, it is a common problem even when it is necessary to highlight specific information from among a plurality of displayed information. That is, in the two-dimensional display, there is a certain limit in displaying specific information with emphasis among a plurality of displayed information.

  This invention is made | formed in view of the said point, and it aims at providing the display apparatus for vehicles which can display information three-dimensionally.

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

  The vehicular display device according to claim 1 is a vehicular display device that displays information, and includes lens means and display means that is arranged behind the lens means and displays information as a display image. The lens means is configured to focus the display light of the display image on the viewing side from the means so as to form a real image and to increase or decrease the distance between the display image and the real image corresponding to the increase or decrease of the distance between the display image and the lens means. The display unit includes a first display region and a second display region, and the lens unit with respect to the display image so that the distance between the second display region and the lens unit is larger than the distance between the first display region and the lens unit. Are arranged so as to be tilted so that a real image can be visually observed.

  In this configuration, display light of the display image is condensed on the viewing side from the lens unit to form a real image, and the distance between the display image and the real image increases or decreases in accordance with the increase or decrease of the distance between the display image and the lens unit. The lens unit is configured as described above, and the lens unit is inclined with respect to the display image so that the distance between the second display region and the lens unit is larger than the distance between the first display region and the lens unit.

  Since the lens means is configured such that the distance between the display image and the real image increases or decreases in accordance with the increase or decrease in the distance between the display image and the lens means, the second display area and its distance are determined by the distance between the first display area and the real image. Real image distance increases. That is, the real image of the second display area is formed on the viewing side from the real image of the first display area, and thus information can be displayed in a three-dimensional manner.

  In the vehicle display device according to claim 2, the information includes the content in the front-rear direction of the host vehicle, the content on the far side of the host vehicle is displayed in the first display region, and the information of the host vehicle is displayed in the second display region. The display means is configured to display the contents on the near side.

  In this configuration, the content on the far side is displayed in the first display area, and the content on the near side is displayed in the second display area. For this reason, a real image of the second display region representing the content on the near side is formed on the viewing side from a real image of the first display region representing the content on the far side. 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 display device for a vehicle according to claim 3 is characterized in that the content on the far side is the content on the rear side of the host vehicle. Thereby, the information including the contents on the rear side of the host vehicle can be displayed three-dimensionally in the front-rear direction of the host vehicle.

  The vehicle display device according to a fourth aspect is characterized in that the first display area is disposed above the second display area in the vertical direction of the host vehicle.

  In this structure, the 1st display area showing the content of the far side is arrange | positioned above the 2nd display area showing the content of the near side of the own vehicle. Here, on the ground, the content on the far side is viewed above the content on the near side of the own vehicle, so information including the content in the front and rear direction of the own vehicle can be transferred to the front and rear direction of the own vehicle without a sense of incongruity. It can be displayed in three dimensions.

  In the vehicle display device according to claim 5, the information includes the first information and the second information that needs to be displayed more emphasized than the first information, and displays the first information in the first display area. In addition, the display means is configured to display the second information in the second display area.

  In this configuration, the first information is displayed in the first display area, and the second information that needs to be displayed more emphasized than the first information is displayed in the second display area. For this reason, the real image of the second display area representing the second information is formed on the viewing side from the real image of the first display area representing the first information, and the second information is displayed more emphasized. Thereby, the information which needs to be highlighted can be emphasized and displayed by using a three-dimensional display.

  The vehicle display device according to claim 6 is characterized in that the lens means is configured as a microlens array in which a plurality of microlenses are arranged. In this configuration, since the lens means is configured as a microlens array, the above-described effects can be obtained with a simple configuration.

  A vehicle display device according to the present invention will be described below with reference to the drawings.

(Constitution)
A combination meter 1 that is a display device for a vehicle according to an embodiment of the present invention is configured as shown in FIG. 1 and is arranged in front of a driver seat of the hybrid vehicle 1 to display various information related to the host vehicle. The combination meter 1 includes a speedometer 2 that displays the vehicle speed of the host vehicle, a tachometer 3 that displays the engine speed, and a liquid crystal display 4 that is display means for displaying various information.

  The liquid crystal display 4 displays distance / outside air temperature information 41 and a guidance display image 42 which is a display image. The distance / outside air temperature information 41 is information that does not include the content in the front-rear direction of the host vehicle, and represents information on the cumulative travel distance and the outside temperature of the host vehicle. The guidance display image 42 is a display image for displaying guidance information that is information including the contents in the front-rear direction of the host vehicle, and the current position of the host vehicle detected by a position detector and a traveling direction detector (not shown) in the navigation system. It is a display image for guiding the host vehicle to travel along the movement route based on the traveling direction. The guidance display image 42 includes, for example, a traveling direction arrow 421 that the host vehicle should travel at an intersection, and an arrival distance 422 (300 m in the example shown in FIG. 1) until the host vehicle reaches the next intersection.

  As shown in FIG. 2, the liquid crystal display 4 is arranged behind the microlens array 5 as the lens means (left side in FIG. 2) and fixed to the case 6 so that it can be seen through the opening 61 of the case 6. . The distance / outside air temperature information 41 and the guidance display image 42 are separated by a separation bar 62 fixed to the case 6.

  The microlens array 5 is fixed to the case 6 and the separation bar 62, and the display light of the guide display image 42 is condensed on the viewing side (right side in FIG. 2) from the microlens array 5 so as to form a real image 52. Composed. On the other hand, the distance / outside air temperature information 41 is configured to be viewed without passing through the microlens array 5. That is, the distance / outside air temperature information 41 and the real image 52 are viewed.

  As shown in FIG. 3, the microlens array 5 is formed of an optical system resin or the like as a microlens array in which a plurality of convex microlenses 51 are arranged. Each microlens 51 condenses display light of each minute portion of the guide display image 42 on the viewing side (right side in FIG. 3) from the microlens array 5, thereby forming the real image 52 as a set of minute real images in the air. Let me image.

  The microlens array 5 is configured to increase or decrease the distance (L1 + L2) between the guide display image 42 and the real image 52 in accordance with the increase or decrease of the distance L1 between the guide display image 42 and the microlens array 5. That is, in FIG. 3, the microlens array 5 is configured such that when the distance L1 is increased, the distance (L1 + L2) is increased, and when the distance L1 is decreased, the distance (L1 + L2) is decreased.

  As an example, the microlens array 5 is optically designed as an equal magnification imaging lens so that the distance L1 is equal to the distance L2, that is, the size of the guide display image 42 and the real image 52 is the same. As a specific example, the external dimensions of the microlens array 5 are 100 × 150 millimeters (mm), the thickness t is 3 mm, and both the lens diameter D and the pitch P are 300 micrometers (μm). The microlens array 5 is formed so that the real image 52 can be formed to such an extent that there is no problem in design when the distance L1 is in the range of 20 mm to 80 mm.

  Here, as shown in FIGS. 4A and 4B, the guidance display image 42 is a first representing the front side of the host vehicle, which is the far side of the host vehicle (the left side in FIG. 4A). The display area 42 </ b> A and a second display area 42 </ b> B representing the content on the proximity side of the host vehicle are provided, and the first display area 42 </ b> A is arranged above the second display area 42 </ b> B (upper side in FIG. 4) in the vertical direction of the host vehicle. Is done. As shown in FIG. 4A, with respect to the guide display image 42, the distance LB1 between the second display area 42B and the microlens array 5 is larger than the distance LA1 between the first display area 42A and the microlens array 5. The microlens array 5 is inclined and arranged.

  Thereby, the distance (LB1 + LB2) between the second display area 42B and the real image 52B in the second display area becomes larger than the distance (LA1 + LA2) between the first display area 42A and the real image 52A in the first display area. That is, the real image 52B of the second display area representing the content on the close side of the host vehicle is connected to the viewing side (right side in FIG. 4A) from the real image 52A of the first display area representing the content on the front side of the host vehicle. Image.

  As a result, in FIG. 4B, the guide display image 42 displayed two-dimensionally on the liquid crystal display 4 is viewed stereoscopically as a real image 52 shown in FIG. The traveling direction arrow 421 is displayed in a light and dark stripe shape, and the traveling direction arrow 421 is displayed so that the stripe flows in the direction of the broken line arrow P.

  The electric circuit configuration of the combination meter 1 according to the present embodiment described above will be described with reference to FIG.

  Electric power is constantly supplied from the battery 12 to the meter control device 7 composed of a microcomputer or the like. An ignition switch 11 is connected to the meter control device 7 so as to be able to detect its operating state (on or off), and a speed sensor 9 for detecting the vehicle speed of the host vehicle and a rotation sensor 10 for detecting the engine speed are included in them. It is connected so that a detection signal can be input. Further, the liquid crystal display 4 and the navigation control device 8 are connected to the meter control device 7.

  The navigation control device 8 is composed of a microcomputer or the like, and executes various navigation operations in the navigation system. Specifically, the travel route to the destination is set, and the host vehicle travels along the travel route based on the current position and travel direction of the host vehicle detected by a position detector and a travel direction detector (not shown). Thus, guidance information for guidance is output to the meter control device 7.

  The meter control device 7 controls the operation of the liquid crystal display 4 based on the guidance information from the navigation control device 8 and causes the liquid crystal display 4 to display a guidance display image 42.

(Operation)
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.

  In FIG. 5, when the ignition switch 11 is turned on by the driver, the meter control device 7 detects it and starts operation. That is, the operation of the speedometer 2 and the tachometer 3 is controlled based on the signals from the speed sensor 9 and the rotation sensor 10. In addition, the meter control device 7 controls the operation of the liquid crystal display 4 based on the guidance information signal from the navigation control device 8 and causes the liquid crystal display 4 to display the guidance display image 42.

  As shown in FIG. 4A, the microlens array 5 is arranged to be inclined with respect to the guidance display image 42 so that the distance LB1 is larger than the distance LA1. As a result, the distance (LB1 + LB2) becomes larger than the distance (LA1 + LA2), and the real image 52B in the second display area representing the content on the near side of the host vehicle, rather than the real image 52A in the first display area representing the content on the front side of the host vehicle. Forms an image on the viewing side (right side in FIG. 4A).

  For this reason, the guide display image 42 shown in FIG. 4B displayed two-dimensionally can be stereoscopically displayed as a real image 52 shown in FIG. Specifically, in FIG. 4C, the real image 52B of the second display area is viewed from the real image 52A of the first display area on the viewing side (front side with respect to the paper surface of FIG. 4C). That is, the traveling direction arrow 521 of the real image 52 is visually observed so as to advance toward the traveling direction of the host vehicle.

  Further, the first display area 42A is arranged above the second display area 42B (upper side in FIG. 4) in the vertical direction of the host vehicle. Here, on the ground, the content on the front side of the host vehicle is viewed above the content on the near side of the host vehicle, so that the real image 52 can be viewed three-dimensionally in the front-rear direction of the host vehicle without a sense of incongruity.

  Further, the traveling direction arrow 421 is displayed in a light and dark stripe shape, and this stripe is displayed so as to flow in the direction of the broken line arrow P. For this reason, the traveling direction arrow 521 of the real image 52 is also visually observed as a bright and dark stripe shape in FIG. Thereby, the traveling direction arrow 521 of the real image 52 is visually observed so as to advance further in the traveling direction of the host vehicle.

  As a result, the real image 52 representing the guidance information including the content in the front-rear direction of the host vehicle is three-dimensionally aligned with the content in the front-rear direction in the front-rear direction of the host vehicle (the left-right direction in FIG. 4A). Can be displayed. In other words, the guide information can be more intuitively recognized as the real image 52.

  It should be noted that in the auto cruise control that controls the constant speed travel and the control to maintain a certain distance between the vehicles on an expressway, etc., the setting value of the distance between the own vehicle and the preceding vehicle, which is information including the content in the front-rear direction. Information can be used in place of the guidance display image 42. In the conventional two-dimensional display, the host vehicle and the preceding vehicle are displayed as horizontal icons, respectively, and the radar waveform and the set value of the inter-vehicle distance are displayed therebetween.

  On the other hand, an icon of a preceding vehicle that is a target on the front side of the host vehicle and a display image of a front end portion of the host vehicle that is a target on the close side of the host vehicle (for example, a front bumper and a part of a bonnet) Can be used in place of the guidance display image 42. That is, the icon of the preceding vehicle can be displayed in the first display area 42A, the display image of the front end portion of the host vehicle can be displayed in the second display area 42B, and the set value of the inter-vehicle distance can be displayed between them. . Thereby, the information of the set value of the inter-vehicle distance, which is information including the content in the front-rear direction of the host vehicle, can be displayed in three dimensions in accordance with the content in the front-rear direction in the front-rear direction of the host vehicle. That is, it becomes possible to more intuitively recognize the information on the setting value of the inter-vehicle distance as the real image 52.

  In the above example, the contents on the front side of the host vehicle are displayed in the first display area 42A. However, the contents on the rear side of the host vehicle can be displayed in the first display area 42A. Thereby, the information including the contents on the rear side of the host vehicle can be displayed three-dimensionally in the front-rear direction of the host vehicle.

  For example, an image of a rear-running vehicle that is a target on the rear side of the host vehicle and a rear end portion of the host vehicle that is a target on the near side of the host vehicle (for example, a rear bumper, a part of a trunk) ) Can be used instead of the guidance display image 42. That is, it can be configured to display the image of the rear vehicle in the first display area 42A and the image of the rear end of the host vehicle in the second display area 42B. As a result, the rear-running vehicle can be displayed three-dimensionally in the front-rear direction of the host vehicle, thereby making it possible to more intuitively recognize a warning for a rear-end collision by the rear-running vehicle.

  In the above-described example, the present invention is applied when displaying information including three-dimensional contents. However, the present invention is not limited to this. Instead of displaying the content on the proximity side of the host vehicle in the second display area 42B, it is also possible to cause the second display area 42B to display information that needs to be highlighted from among the plurality of displayed information. Is possible.

  In this case, the first information is displayed in the first display area 42A, and the second information that needs to be displayed more emphasized than the first information is displayed in the second display area 42B. For this reason, the real image of the second display area 42B representing the second information is formed on the viewing side from the real image of the first display area 42A representing the first information, and the second information is displayed more emphasized. Accordingly, information that needs to be highlighted can be highlighted and displayed using a stereoscopic display.

  As described above, the combination meter 1 that is a display device for a vehicle according to the present invention is a combination meter 1 that displays information, and is arranged behind the microlens array 5 that is a lens means and the microlens array 5 and displays information. A liquid crystal display 4 as display means for displaying as a guide display image 42 as an image, and condensing display light of the guide display image 42 on the viewing side from the microlens array 5 so as to form a real image 52. In addition, the microlens array 5 so that the distances (LA1 + LA2) and (LB1 + LB2) between the guide display image 42 and the real image 52 increase or decrease in accordance with the increase or decrease of the distances LA1 and LB1 between the guide display image 42 and the microlens array 5. The guide display image 42 includes a first display area 42A and a second display area 42B, and the first display area 42A and the microlens array are provided. The microlens array 5 is tilted with respect to the guide display image 42 so that the distance LB1 between the second display area 42B and the microlens array 5 is larger than the distance LA1 of the a5, and the real image 52 is viewed. Has been.

  Thereby, the display apparatus for vehicles which can display information three-dimensionally can be provided.

  In addition, it is not restricted to the example mentioned above, These combinations and other various modifications can be considered.

FIG. 1 is a front view of a combination meter 1 that is a vehicle display device according to an embodiment of the present invention. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 3 is a schematic perspective view for explaining a mechanism for forming a real image 52 by the microlens array 5 which is the lens means in FIG. It is a schematic diagram explaining the mechanism in which the real image 52 by the micro lens array 5 is viewed in three dimensions. FIG. 5 is a circuit configuration diagram illustrating an electrical circuit configuration of the combination meter 1 shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combination meter (vehicle display device), 2 Speedometer, 3 Tachometer 4 Liquid crystal display (display means), 41 Distance / outside temperature information 42 Guide display image (display image), 421 Travel direction arrow, 422 Reaching distance 42A 1st display area, 42B 2nd display area 5 Micro lens array (lens means), 51 Micro lens, 52 Real image 52A Real image of 1st display area, 52B Real image of 2nd display area 6 Case, 61 Aperture, 62 Separation bar, 7 Meter control device 8 Navigation control device 9 Speed sensor 10 Rotation sensor 11 Ignition switch 12 Battery

Claims (6)

A vehicle display device for displaying information,
Lens means;
A display unit disposed behind the lens unit and displaying the information as a display image;
The display light of the display image is condensed on the viewing side from the lens means so as to form a real image, and the display image and the real image of the real image are corresponding to the increase or decrease of the distance between the display image and the lens means. The lens means is configured to increase or decrease the distance;
The display image includes a first display area and a second display area,
The lens means is arranged to be inclined with respect to the display image so that the distance between the second display area and the lens means is larger than the distance between the first display area and the lens means,
A vehicular display device configured to make the real image visible. The information includes contents in the front-rear direction of the host vehicle,
The display means is configured to display contents on the far side of the host vehicle in the first display area and display contents on the near side of the host vehicle in the second display area. The vehicle display device according to claim 1.   The vehicle display device according to claim 2, wherein the content on the far side is the content on the rear side of the host vehicle.   4. The vehicle display device according to claim 2, wherein the first display area is arranged above the second display area in the vertical direction of the host vehicle. 5. The information includes first information and second information that needs to be emphasized and displayed from the first information.
2. The display unit according to claim 1, wherein the display unit is configured to display the first information in the first display area and display the second information in the second display area. Vehicle display device.   The vehicular display device according to any one of claims 1 to 5, wherein the lens unit is configured as a microlens array in which a plurality of microlenses are arranged.

Images