Classifications

• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
  • G02B27/01—Head-up displays
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
  • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
  • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
  • B60K35/211—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays producing three-dimensional [3D] effects, e.g. stereoscopic images
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
  • G02B27/01—Head-up displays
  • G02B27/0101—Head-up displays characterised by optical features
  • G02B2027/0141—Head-up displays characterised by optical features characterised by the informative content of the display

Definitions

• the present invention relates to a vehicular display device having display means for displaying a road shape ahead of a vehicle.
• a vehicle display device for example, a head-up display device that displays a virtual image by projecting display light emitted from a display unit (display means) onto a windshield (projection member) of a vehicle is known.
• the display unit includes, for example, a housing that accommodates a display device such as a liquid crystal display device and a reflecting mirror that reflects the display light emitted by the display device, and is disposed in a dashboard of a vehicle. It is established. The display light projected by the display unit is reflected to the driver's viewpoint by the windshield, and the virtual image is displayed. According to such a configuration, it is possible to display various information such as vehicle information such as vehicle speed and engine speed and navigation information on the windshield as the virtual image.
• Patent Document 2 Japanese Patent Laid-Open No. 11-310055
• Patent Document 2 Japanese Patent Application Laid-Open No. 2000-211452
• the driver recognizes the road shape display displayed as the virtual image and grasps the actual road shape from the shape.
• the driver recognizes the road shape display updated according to the traveling of the vehicle. It is necessary to judge the condition of the road ahead, such as the force that is a force curve whose shape is displayed as a straight line, and the presence or absence of a force that is a sharp curve that requires brake operation. There was room for improvement as a function to support.
• the present invention has been made in view of the above problems, and a vehicle display device that enables a driver to grasp the shape of a road ahead of a vehicle and instantly recognize the state of the road.
• the purpose is to provide it.
• the present invention includes a display for emitting display light, a display means for projecting the display light on a projection member, a road shape image showing a shape of a road ahead of the vehicle, and the road. And control means for displaying the three-dimensional information on the display means.
• the present invention provides a display unit, a control unit that displays a road shape image indicating a shape of a road ahead of a vehicle and three-dimensional information of the road on the display unit.
• control means is characterized in that the display means displays a height difference index for notifying a height difference of the road as the three-dimensional information.
• control means is characterized in that the display means displays, as the three-dimensional information, an inclination index for notifying left and right inclinations of the road.
• the control means may cause the display means to display a distance index indicating the distance of the road as the three-dimensional information.
• the distance index has a plurality of lines arranged at equal distance intervals.
• the control means may cause the display means to display a curvature index indicating the curvature of the road as the three-dimensional information.
• the control unit notifies the three-dimensional information that the road has a sharp curve.
• a curve warning display is displayed on the display means.
• the road shape image has a line indicating a width line of the road. To do.
• the road shape image has a line indicating a center line of the road.
• control means is characterized in that a texture image is mapped on the road shape image.
• the texture image is characterized in that a pattern density or a color is different between a portion indicating a road shape near the vehicle and a portion indicating a road shape distant from the vehicle in the road shape image. .
• the control means may cause the display means to display the road shape image so as to overlap the road.
• the control means may cause the display means to display a vehicle index indicating a position of the vehicle corresponding to the road shape image.
• control means displays a position warning display on the display means as the three-dimensional information when the own vehicle index is at a position to be warned.
• control means displays a position warning display on the display means as the three-dimensional information.
• control means is characterized in that at least a part of the road shape image is colored and displayed as the position warning display.
• the control unit displays a speed warning display on the display unit as the three-dimensional information. It is characterized by being made.
• a storage unit for storing a display form and a display setting of the road shape image and the three-dimensional information, and an operating means for switching the display form and the display setting of the road shape image and the three-dimensional information And characterized in that:
• the present invention relates to a vehicle display device having a display means for displaying a road shape ahead of a vehicle, in which a driver grasps the shape of the road ahead of the vehicle and instantly recognizes the state of the road. It is possible to do.
• FIG. 1 A vehicle according to an embodiment of the present invention.
• FIG. 2 is a schematic diagram of a vehicle) device according to the embodiment.
• reference numeral 1 denotes a display unit. It is arranged in the board.
• the display light L projected by the display means 1 is reflected in the direction of the driver's viewpoint D by the windshield W which has been subjected to the compiler processing, and a virtual image V is displayed.
• the driver can observe the virtual image V superimposed on the landscape.
• Reference numeral 2 denotes a display, and the display 2 is composed of a TFT type liquid crystal display element and backlight means.
• Reference numeral 3 denotes a circuit board on which the display 2 is mounted.
• Reference numeral 4 denotes a reflector, and the reflector 4 reflects the display light L emitted from the display 2 to the windshield W.
• the reflecting surface 4a of the reflecting mirror 4 is concave, so that the display light L from the display 2 can be expanded and projected on the windshield W.
• Reference numeral 5 denotes a holding member, and the reflecting mirror 4 is bonded to the holding member 5 with a double-sided adhesive tape.
• the display 2 is not limited to a configuration including a liquid crystal display element, but may be, for example, a configuration including an organic EL display panel.
• Reference numeral 6 denotes a housing.
• the housing 6 accommodates the display 2, the circuit board 3, the reflecting mirror 4, and the like.
• the housing 6 is provided with a translucent cover 7 through which the display light L passes.
• the translucent cover 7 is made of a translucent resin such as acrylic and has a curved shape.
• the housing 6 is provided with a light-shielding wall 6a to prevent external light such as sunlight from entering the display 2 to prevent the virtual image V from being seen (push-out).
• FIG. 3 is a block diagram of a head-up display device for a vehicle.
• the head-up display device for a vehicle mainly includes a speed sensor 10, a GPS (Global Positioning System) radio wave reception unit 11, a storage medium 12, an operation unit 13, a control unit 14, and a display unit 1. I have.
• GPS Global Positioning System
• the speed sensor 10 detects the running speed of the vehicle A and outputs a speed signal to the control means 14.
• the GPS radio wave receiving unit 11 includes a GPS receiving antenna, amplifies a transmission radio wave, which is the positional information of the artificial satellite power received by the receiving antenna, as a high-frequency signal and supplies it to the control means 14.
• the storage medium 12 includes a CD-ROM, a DVD-ROM, a hard disk, or the like, and stores map data and road condition data indicating a road condition, and controls the map data and the road condition data.
• the road condition data is It includes road shape data indicating the shape of the road, height data indicating the height of the road at a predetermined position, inclination data indicating the left and right inclination of the road, curvature data indicating the curvature of the road, and the like.
• the operation unit 13 has a plurality of switches such as a selection key and an enter key, and switches a display form and display settings of a road shape image and various three-dimensional information of the road described later.
• the driver can arbitrarily select the display form of the road shape image and the three-dimensional information by operating the operation means 13. Further, the driver selects, as the display setting, display or non-display of the road shape image and the three-dimensional information, or arbitrarily sets each set value when displaying the three-dimensional information. be able to.
• the control means 14 includes a microcomputer 15, a drive circuit 16, and a storage unit 17.
• the microcomputer 15 has a CPU 15a, a ROM 15b, and a RAM 15c.
• the drive circuit 16 converts a control signal from the microcomputer 14 into a drive signal for the display means 1 and is electrically connected to the display means 1.
• the storage unit 17 is a storage device such as an EEPROM or a flash memory, and stores the road shape image and the display form data and display setting data of the three-dimensional information.
• the control means 14 indicates the map data and the road condition ahead of the vehicle A from the storage medium 13 based on the speed signal output from the speed sensor 10 and the position data of the vehicle A obtained from the GPS radio wave receiving unit 11. Enter road condition data (data mapping process).
• control means 14 performs predetermined arithmetic processing based on the road condition data, and based on the display form data and the display setting data stored in the storage unit 17, the road shape image and the tertiary Original information is generated, and the drive signal is output to the display 2 of the display means 1 via the drive circuit 16 to cause the display means 1 to display the road shape image and the three-dimensional information.
• FIGS. 4 to 6 are diagrams showing display images displayed on the display unit 1 by the control unit 14 and recognized by the driver as a virtual image V.
• the display image includes a road shape image 20 indicating the shape of the road ahead of the vehicle A, various three-dimensional information of the road, and the own vehicle index 2 indicating the position of the vehicle A according to the road shape image 20.
• the term "three-dimensional information" as used herein refers to an image that informs the user of a situation relating to the three-dimensional shape of the road ahead of the vehicle A.
• the three-dimensional information includes a height difference index 22, a slope index 23, It displays the distance index 24, curve warning display 25, position warning display 26, and speed warning display 27.
• the road shape image 20 includes a left width line 20a indicating a left (traveling lane side) width line of the road ahead of the vehicle A, a center line 20b indicating a center line of the road, and a right line (opposite lane side) of the road. ) It has a right width line 20c indicating the width line.
• the left side width line 20a and the right side width line 20c show, for example, white lines drawn on the road, and three-dimensionally show the shapes of the traveling lane and the oncoming lane of the vehicle A as the road ahead of the vehicle A.
• the center line 20b indicates a center line drawn on the road or a substantially center line of both width lines 20a of the road on a road on which the center line is not drawn. The driver can grasp the shape of the road ahead of the vehicle A by the left width line 20a, the center line 20b, and the right width line 20c. Note that the road shape image 20 may display only the traveling lane of the vehicle A.
• the height difference index 22 notifies the driver of a height difference on the road in front of the vehicle A. That is, whether the road ahead of the vehicle A is going uphill or downhill is notified.
• the control means 14 compares, for example, the height of a predetermined position ahead of the vehicle A obtained with the road condition data force with the height of the current position of the vehicle A, and compares the predetermined position with the current position and stores it as a set value. If the height difference is lower than the predetermined height difference stored in the section 17, an arrow index pointing downward as shown in FIG. 4 is displayed as the height difference index 22, and the predetermined position is the current position.
• the arrow index pointing upward is displayed as the height difference index 22.
• the driver can instantly recognize from the elevation difference index 22 that the road ahead of the vehicle A is on an uphill or downhill.
• the display form of the height difference index 22 is arbitrary, and may be, for example, a numerical index indicating a height difference or a colored area formed on the road shape image 20.
• the inclination index 23 is for notifying the driver of the left and right inclination on the road in front of the vehicle A.
• the slope index 23 is a horizontal line 23a indicating a horizontal line and a slope of the road shape image 20.
• the driver has a slope line 23b displayed along the road, and the driver can read and interpret the horizontal line 23a and the slope line 23b so that the road in front of the vehicle A leans to the left or right. It can be instantly recognized.
• the display form of the inclination index 23 is arbitrary, and for example, a numerical index indicating the inclination may be displayed.
• the distance index 24 indicates the distance of the road in front of the vehicle A, and indicates an equal distance interval by a plurality of distance lines arranged on the road shape image 20. The driver can instantly recognize how far from the current position of the vehicle A the change in the shape of the road ahead of the vehicle A, such as a curve, is located by the distance index 24.
• the display form of the distance index 24 is arbitrary, and may be, for example, a colored area formed on the road shape image 20.
• the curve warning display 25 informs the driver that the road ahead of the vehicle A is a sharp curve, and includes an arrow index 25a displayed along the road shape image 20 and a curvature of the road. It consists of a numerical index 25b which is a curvature index indicating The numerical index 25b indicates the radius of curvature of the road.
• the control unit 14 determines that the curvature of the road obtained from the road condition data is equal to or larger than a predetermined set value stored in the storage unit 17 or larger than the set value, that is, the curvature radius of the road is When the value is equal to or less than the predetermined value or smaller than the predetermined value, it is determined that the road has a sharp curve, and a curve warning display 25 is displayed on the display unit 1.
• the driver can instantly recognize from the curve warning display 25 that the road ahead of the vehicle A is a sharp curve. Further, the driver can instantly recognize the curve of the road ahead of the vehicle A by using the numerical index 25b which is the curvature index.
• the display form of the curve warning display 25 is arbitrary, for example, a character index such as "Caution for right curve" may be displayed.
• the own vehicle index 21 indicates the position of the vehicle A according to the road shape image 20, and is composed of a circular index. The driver can instantly recognize which position on the road the vehicle A is actually traveling by the own vehicle index 21. Further, the control means 14 may, for example, determine that the distance between the host vehicle index 21 and the left width line 20a or the center line 20b is equal to or smaller than a predetermined set value stored in the storage unit 17 or smaller than the set value. ,my car It is determined that both indicators 21 are at the positions where warning should be performed, and a position warning display 26 is displayed on the display means 1 as shown in FIG. The position warning display 26 is also displayed, for example, in the vicinity of the own vehicle index 21 and has an arrow index force indicating the direction in which the vehicle A should be moved.
• the driver can instantly recognize from the position warning display 26 that the vehicle A is at the position on the road to be warned.
• the display form of the host vehicle index 21 is arbitrary, and may be, for example, a vehicle-shaped mark.
• the display form of the position warning display 26 is arbitrary.
• the position warning display 26 may be displayed by coloring the own vehicle index 21 or may be displayed by a character index such as "caution on the road".
• the control means 14 determines that the running speed of the vehicle A is equal to or greater than a predetermined speed which is a set value stored in the storage unit 17 in accordance with the curvature of the road ahead of the vehicle A or greater than the predetermined speed.
• a predetermined speed which is a set value stored in the storage unit 17 in accordance with the curvature of the road ahead of the vehicle A or greater than the predetermined speed.
• a speed warning display 27 is displayed on the display means 1 as shown in FIG.
• the speed warning display 27 also has a character index power indicating “speed down” for urging the driver to decelerate, for example.
• the driver can instantly recognize from the speed warning display 27 that the vehicle A is traveling at an overspeed with respect to a change in the shape of the road such as a force ahead.
• the display form of the speed warning display is arbitrary.
• the speed warning display may be displayed by coloring the own vehicle index 21 or may be displayed by a mark urging deceleration.
• the vehicular head-up display device includes a display 2 that emits display light L, a display means 1 for projecting the display light L on a windshield W, and a display means 1 on the road ahead of the vehicle A on the display means 1. It comprises a road shape image 20 indicating a shape and control means 14 for displaying the three-dimensional information of the road.
• the road shape image 20 has a left width line 20a and a right width line 20c indicating left and right width lines of the road.
• the road shape image 20 has a center line 20b indicating the center line of the road.
• the driver can use the road shape image 20 to view the actual road shape in front of the vehicle A even when it is difficult to see the actual road shape due to the weather conditions, the curve of the road, surrounding vehicles, buildings, and the like.
• the shape of the road can be grasped, and the three-dimensional information is displayed, so that the driver can determine the three-dimensional shape of the road ahead of the vehicle A. The situation can be instantly recognized.
• the height difference index 22 for notifying the height difference of the road is displayed on the display means 1, so that the driver can determine whether the road ahead of the vehicle A is uphill or downhill. Can be instantly recognized.
• the driver can incline the road ahead of the vehicle A to the left or right. ,, And can be instantly recognized.
• a distance index 24 indicating the distance of the road is displayed on the display means 1, The driver can instantly recognize how far the shape change on the road ahead of the vehicle A, such as a curve, is located from the current position of the vehicle A.
• the control unit 14 provides a curve for notifying that the road is a sharp curve as the three-dimensional information.
• the warning display 25 on the display means 1
• the control means 14 causes the display means 1 to display a numerical index 25b, which is the curvature index indicating the curvature of the road, as the three-dimensional information, so that the driver can understand how much of the road ahead of the vehicle A. It can be instantaneously recognized whether the curve is a curve.
• the driver can determine which position on the road the vehicle A actually travels. V, can be instantly recognized.
• the position warning display 26 is displayed on the display means 1 as the three-dimensional information, so that the driver can control the vehicle A Can be instantly recognized as being at a position on the road where a warning should be given.
• a speed warning display is displayed on the display means 1 as the three-dimensional information. Is displayed, the driver can confirm that the vehicle A is in the shape of the road such as a curve ahead. It is possible to instantly recognize that the vehicle is running at an overspeed in response to a change in shape.
• a storage unit 17 for storing display settings, and operating means 13 for switching between the display mode and the display settings the driver operates the operating means 13 so that the driver can view the road shape image 20 and the three-dimensional image.
• the display mode and the display setting of the information can be selected according to the user's preference, and the merchantability of the vehicle head-up display device can be improved.
• FIG. 7 and 8 are diagrams showing display images displayed on the display means 1 by the control means 14 and recognized by the driver as virtual images V.
• FIG. FIG. 7 shows a display image obtained by performing texture mapping on the road shape image 20.
• the texture mapping process is a process of pasting a predetermined image on a surface of an object.
• a texture image 20d representing a road surface is pasted on a road shape image 20 as an object.
• the texture image data for drawing the texture image 20d is stored in the storage medium 12, and the control unit 14 reads the texture image data from the storage medium 12, and performs the texture mapping process on the road shape image 20. Go and paste texture image 20d.
• the texture image 20d used in the texture mapping process is either a real texture image obtained by cutting out a two-dimensional real image of a natural object (road surface) or an artificial texture image created artificially to imitate the road surface. There may be.
• the texture image 20d is, for example, a portion of the road shape image 20 that indicates the road shape near the vehicle A, where the pattern density is low.
• the density or color of the pattern may be different continuously or stepwise, such as where the pattern density is high or the color is dark.
• the vehicle head-up display device uses a control means 14 to map a texture image 20d to a road shape image 20 to express a road surface.
• the texture image 20d shows the road shape near the vehicle A in the road shape image 20.
• the density or color of the pattern is different between the location where the vehicle is located and the location where the road shape is far from the vehicle. This makes it possible for the driver to clearly recognize the depth direction of the road as compared to expressing the road shape using only the line.
• FIG. 8 shows a display image on which the position warning display is displayed when the own vehicle index 21 is not displayed.
• the control unit 14 determines whether the distance between the vehicle A and the center line or the left width line is determined. Is smaller than or equal to a predetermined set value stored in the storage unit 17, it is determined that the vehicle A is at a position where a warning should be issued, and a position warning display of the road shape image 20 is displayed. The area where vehicle A is in proximity is colored red.
• FIG. 8 shows the position warning display when the vehicle A approaches the left width line, and the left width line 20a indicating the left width line is colored.
• a center line 20b indicating the center line is colored.
• the colored area of the position warning display is arbitrary, and for example, an area near the center line 20a or near the left width line 20a of the road shape image 20 may be colored.
• the head-up display device for a vehicle is displayed on the display unit 1 as the three-dimensional information. This is to display a position warning display. Further, at least a part of the road shape image 20 is colored and displayed as the position warning display. Thus, the driver can instantly recognize that the vehicle A is at a position on the road where a warning should be made.
• the display position of the display image displayed as virtual image V by display means 1 on windshield W is not mentioned.
• the road shape image 20 may be displayed on the display means 1 so as to overlap the actual road ahead of the vehicle A.
• the road shape image 20 and the actual road are not interpreted. Because it is possible to grasp the shape of the road, even if it is difficult to visually see the actual shape of the road due to the influence of weather conditions, curve of the road, surrounding vehicles and buildings, The driver can more easily grasp the shape of the road.
• the display light L from the display means 1 is projected onto the front glass W, but the projection member in the present invention is limited to the present embodiment.
• the display light from the display device may be projected on a complier disposed on a windshield of a vehicle or on a dashboard of the vehicle.
• the display means is not limited to one that projects the display light onto the projection member, and the display means is such that the driver looks directly at the display. It may have a step.
• the present invention is a vehicular display device having a display means for displaying a road shape ahead of a vehicle, wherein the display means projects display light onto a projection member such as a windshield, or a driver looks directly at the display.
• the present invention can be applied to a vehicle display device having such a display means.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Instrument Panels (AREA)
• Traffic Control Systems (AREA)

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Citations (8)

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• 2004
  • 2004-09-10 JP JP2004263672A patent/JP4609695B2/ja not_active Expired - Fee Related
  • 2004-09-17 EP EP04817231A patent/EP1677272A4/en not_active Withdrawn
  • 2004-09-17 US US10/576,685 patent/US20080055192A1/en not_active Abandoned
  • 2004-09-17 WO PCT/JP2004/013659 patent/WO2005038744A1/ja not_active Ceased

Patent Citations (8)

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