JP4596245B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a vehicle display device that displays a running road shape on a display means.

2. Description of the Related Art Conventionally, a head-up display device that displays a virtual image by projecting light emitted from a display unit (display unit) onto a vehicle windshield (projection member) as a display image is known as a vehicle display device (for example, See Patent Document 1 below). The display unit is, for example, a housing in which a display made of a liquid crystal display or the like and a reflecting mirror that reflects the display image emitted from the display are housed in a dashboard of a vehicle. Is. The display image projected by the display unit is reflected from the windshield to the viewpoint of the driver, and the virtual image is displayed. According to this 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.
JP 11-310055 A

Further, in the above-described display device for a vehicle, there is known a device that displays a forward running road shape viewed from the viewpoint of a vehicle driver (for example, see Patent Document 2 below). According to such a display device for a vehicle, the driver can display the runway shape displayed even when it is difficult to see the actual runway shape due to weather conditions, a curve of the runway, surrounding vehicles, buildings, and the like. From this, the actual shape of the runway can be grasped.
JP 2000-211142 A

  By the way, as of November 1, 2004, the Road Traffic Law was partially revised, and according to this revised law, the vehicle driver holds in his hand a mobile phone that is an operated member operated by the vehicle driver. Or when the vehicle driver is driving the vehicle while holding the operated member in his hand and gazing at the display screen of the operated member. Will be penalized (fine). For example, when the vehicle is being driven while grasping the shape of the one-lane lane in front of the vehicle displayed as in the vehicle display device described in Patent Document 2, the ringtone of the mobile phone is suddenly generated. If the vehicle driver wants to talk to the other party who has called the phone as soon as possible (for example, within 5 seconds after the ringing tone sounds), hold the mobile phone while the vehicle is running and talk. If this happens, if the police officer finds the state of this call, the vehicle driver will be immediately penalized.

  Accordingly, in order to prevent the penalty from being imposed, it is assumed that the number of drivers who hold the mobile phone and perform a call operation after the vehicle is stopped at a predetermined position is inevitably increased (expected). Is done. Specifically, when it is desired to stop the vehicle within 5 seconds after the ringing tone as described above and subsequently hold the mobile phone to perform a call operation, the rear side of the vehicle It is assumed that the number of drivers who inevitably increase the number of drivers who stop the vehicle by moving it to the left of the runway so as not to interfere with the travel of other vehicles traveling on the road.

However, in such a state that the vehicle is stopped to the left of the runway when the mobile phone (operated member) is gripped in this way, when the other vehicle passes the vehicle, the opposite lane of the runway is changed. Each vehicle must run on the side (side) of the vehicle while protruding. At this time, if a plurality of vehicles from the opposite lane that are traveling in a direction opposite to the traveling direction of the vehicle are continuously traveling on the side of the vehicle, the other vehicle is As the vehicle becomes in the way and it is impossible to overtake the vehicle, the smooth running of the other vehicles running behind the vehicle is hindered, thereby causing traffic congestion around the vehicle. There was a problem that.
Accordingly, the present invention prevents the occurrence of traffic congestion by allowing a driver who grasps and operates a member to be operated while the vehicle is running to recognize a safe place in order to deal with the above-described problems. An object of the present invention is to provide a display device for a vehicle that can be used.

  The present invention provides a display means for displaying a running road shape based on map information stored in a map information storage means, a position detection means for detecting a current position of the vehicle, and a current vehicle position detected by the position detection means. Control means for causing the display means to display a traveling road shape on the front side of the vehicle based on position data and the map information, wherein the control means deviates from the traveling road shape. A parking / parking space for temporarily stopping the vehicle on a predetermined road surface as a position is added to the runway shape and displayed.

  Further, the present invention is characterized in that the control means displays the road surface on which the operated member operated by gripping of the driver of the vehicle can be operated as the parking / stopping space.

  According to the present invention, the operated member is a mobile phone.

  In the invention, it is preferable that the display means is a head-up display.

  According to the present invention, the initial purpose can be achieved, and the occurrence of traffic congestion can be prevented by allowing a driver who grasps and operates an operated member while the vehicle is running to recognize a safe place. It is possible to provide a display device for a vehicle that can be

  Hereinafter, an example in which the vehicle display device of the present invention is applied to a vehicle head-up display device will be described with reference to the accompanying drawings.

  1 and 2, reference numeral 1 denotes a display unit, which is disposed in the dashboard of the vehicle A. The display image L projected by the display unit 1 is reflected in the direction of the viewpoint D of the driver by the windshield W that has been subjected to the combiner process, and is displayed as a virtual image V. The driver can observe the virtual image V superimposed on the landscape.

  Reference numeral 2 denotes a display (display means), and the display 2 comprises a TFT type liquid crystal display element and a backlight means. Reference numeral 3 denotes a circuit board, and the display 2 is mounted on the circuit board 3. Reference numeral 4 denotes a reflecting mirror. The reflecting mirror 4 reflects the display image L emitted from the display 2 toward the windshield W. The reflecting surface 4a of the reflecting mirror 4 is concave, and the display image L from the display 2 can be enlarged and projected onto the windshield W. Reference numeral 5 denotes a holding member that holds the reflecting mirror 4, and the reflecting mirror 4 is bonded to the holding member 5 with a double-sided adhesive tape or the like. The display 2 is not limited to the configuration including the liquid crystal display element, and may be configured to include an organic EL panel that is a self-luminous display element, for example.

  Reference numeral 6 denotes a housing made of a light-shielding synthetic resin formed in a substantially box shape, for example, and the display 2, the circuit board 3, the reflecting mirror 4 and the like are accommodated in the housing 6. Further, the housing 6 is provided with an opening 6a that opens an upper portion (front glass W side) of the position where the reflecting mirror 4 is disposed. The housing 6 is provided with a translucent cover 7 made of a translucent synthetic resin material (for example, acrylic resin) so as to close the opening 6a. The light-shielding cover 7 is formed in a substantially curved shape, and allows the display image L to pass to the windshield W side. In FIG. 1, 6 b is a light shielding wall extending toward the cavity of the housing 6, and this light shielding wall 6 b is a phenomenon in which external light such as sunlight is incident on the display 2 and the virtual image V becomes difficult to see ( It has a function to prevent washout).

  FIG. 3 is a block diagram showing an electrical configuration of the vehicle head-up display device. The vehicle head-up display device is mounted on a vehicle A, and includes a speed sensor (vehicle speed detection means) 10, a GPS (Global Positioning System) device 11, a gyro sensor 12, a storage medium (map information storage means) 13, The operation unit 14, the control unit 15, the display drive circuit 16, and the display 2 are mainly configured.

  The speed sensor 10 is for detecting the traveling speed of the vehicle A, and outputs a signal corresponding to the vehicle speed to the control means 15.

  The GPS device 11 is a device for obtaining the latitude and longitude of the vehicle position (the current position of the vehicle A), and includes GPS reception antennas and amplification circuits, and is position information from an artificial satellite received by the reception antenna. A signal obtained by amplifying the transmission radio wave as a high frequency signal is output to the control means 15.

  The gyro sensor 12 is for detecting the vehicle body direction (traveling direction) of the vehicle A, and outputs a signal corresponding to the direction change of the vehicle A to the control means 15.

  The storage medium 13 is configured by a CD-ROM, DVD-ROM, hard disk, or the like, and stores digital map data (map information) composed of map data and three-dimensional coordinate information (three-dimensional information) for indicating the shape of the runway. The digital map data is used when a drawing process (to be described later) by the control means 15 is performed. The digital map data includes a road shape data indicating the shape of the road, height data indicating the height, inclination data indicating a right and left (width direction) inclination of the road, and a front and rear (longitudinal direction) inclination of the road. Gradient data indicating (gradient), curvature data indicating the curvature of the road, and the like are provided for each predetermined position (predetermined longitude / latitude) of the road.

  The operation means 14 has a plurality of operation units such as a selection switch and a determination switch, and displays a display form or a display setting of a road shape image to be described later (one obtained by drawing each three-dimensional coordinate information of the road). It is for switching. In addition, as the display setting, the driver can select display or non-display of the road shape image, or display each setting value when the road shape image is displayed by operating the operation unit 14. The contents displayed by the device 2 can be arbitrarily set.

  The control means 15 can be a microcomputer, and includes a ROM that stores a processing operation program, a RAM that temporarily stores calculation values, an EEPROM that stores various preset values, and executes the programs. It is mainly composed of a CPU and an input / output interface circuit. The input / output interface circuit is a circuit for establishing an electrical connection relationship with the speed sensor 10, the GPS device 11, the gyro sensor 12, the storage medium 13, the operation means 14, and the display drive circuit 16 described later. . The control means 15 outputs a control signal to the display drive circuit 16 to be described later based on the input from each mechanism (speed sensor 10, GPS device 11, gyro sensor 12, storage medium 13, operation means 14) and the program. The display 2 is prompted for a desired display.

  The display driving circuit 16 is a circuit for supplying a display signal to the display device 2 and is configured by an IC or an LSI. The display driving circuit 16 drives and controls the display 2 so as to perform a predetermined display based on a signal from the control means 15.

  The display 2 includes a TFT liquid crystal display element and backlight means, and is driven and controlled by the display drive circuit 16 so as to emit a display image L. The display device 2 projects a desired display form such as the runway shape image as a display image L onto the windshield W by the display drive circuit 16.

  With the above configuration, the control unit 15 calculates the vehicle position coordinates and the vehicle direction based on the signal from the position detection unit 17 including the speed sensor 10, the GPS device 11, and the gyro sensor 12, and the front of the vehicle The running path shape corresponding to the side (traveling direction side) can be displayed on the display 2 via the display drive circuit 16 based on the digital map data stored in the storage medium 13.

  Next, drawing of the display image L by the control means 15 will be described with reference to FIGS.

  FIG. 4 shows processing by the control means 15. FIG. 5 shows an example of a display screen that is projected and displayed on the surface of the windshield W by the display unit 1 with the traveling road shape on the front side (traveling direction side) of the vehicle A as a display image L.

  The control means 15 calculates the vehicle position coordinates and the traveling direction of the vehicle A based on the signal from the position detection means 17 (step S1). In this case, the control means 15 calculates vehicle position coordinates by the speed sensor 10, the GPS device 11, and the gyro sensor 12. For example, the control means 15 can calculate the vehicle position coordinates of the vehicle A by mapping the position data of the vehicle A that changes with time and the map data using the GPS device 11. Further, the control means 15 determines the traveling direction (movement width) of the vehicle A and the inclination direction of the vehicle body based on signals from the speed sensor 10 and the gyro sensor 12.

  Next, the control means 15 sets viewpoint coordinates according to the vehicle position coordinates, and sets the display direction based on the traveling direction of the vehicle A (step S2). In this case, the viewpoint coordinates are set to a position 15 meters higher than the vehicle position coordinates, and the display direction is set to the same direction as the traveling direction of the vehicle A.

  Next, in the digital map data stored in the storage medium 13, the control unit 15 performs a drawing process on the road shape by calculating three-dimensional coordinate information selected based on the viewpoint coordinates and the display direction ( Step S3). In this case, for example, three-dimensional coordinate information within one kilometer from the viewpoint coordinate to the display direction side is calculated, and drawing processing is performed so that the display image L is displayed.

  Further, the control means 15 outputs to the display drive circuit 16 a signal that prompts the display device 2 to display the drawn road shape as a road shape image (step S4).

  By repeating the above-described processing, the running road shape based on the viewpoint coordinates and the three-dimensional coordinate information updated each time the vehicle A travels can be projected on the windshield W as the display image L. For example, a runway shape R as shown in FIG. 5 can be projected onto the windshield W.

  Here, the control means 15 can display the runway shape R in the display color set according to the grade of the gradient when performing the drawing process in step S3. For example, in the runway shape R, the downward slope portion R1 is displayed in red, and the greater the slope, the darker red is displayed. Further, the upward gradient portion R2 is displayed in blue, and the larger the gradient is, the darker blue is displayed. In this case, the control means 15 passes through a predetermined position (predetermined longitude / latitude) of the digital map data and is not related to the contour (shoulder line) R3 of the road shape R (in the width direction of the road shape R in FIG. 5). Line) is displayed as the auxiliary line R4. The control unit 15 extracts gradient data for each road surface R5 between the auxiliary lines R4, and draws a road shape R formed by coloring a display color corresponding to the degree of the gradient for each road surface R5. Further, in this case, the control means 15 draws the running road shape R by coloring the running road surface R5 portion having almost no gradient in white, and causes the display 2 to project and display it.

  Therefore, the driver can determine whether the runway is an uphill or a downhill, or the degree of the gradient, by visually recognizing the display color of the runway shape R and the degree of shading thereof.

  Further, when performing the drawing process in step S3, the control means 15 extends outside the runway shape R (to the left of the left shoulder line R3) at a substantially central portion of the left shoulder line R3 as shown in FIG. A drawing / parking process is performed so that the parking / stopping space P including the road surface for temporarily stopping the vehicle is displayed together with the runway shape R.

  Specifically, the control means 15 is located substantially to the left of the left shoulder line R3, and is used as a temporary resting place for the driver (road surface for stopping the vehicle). After the vehicle A is stopped, the driver grips a member to be operated (not shown) operated by the driver for a predetermined time, such as a mobile phone, without disturbing the traveling of other vehicles. Then, a parking / parking space P consisting of the gripping operation area of the mobile phone that can be operated in this manner is added to the runway shape R and displayed on the display 2. In this case, the parking / stopping space P is colored with the display color set in accordance with the gradient of the predetermined running road surface R5. In addition, for the operation of the mobile phone, the driver holds the mobile phone and makes a call, and the driver holds the mobile phone and watches the mail contents and various information through the display screen of the mobile phone. This includes all operations performed by the driver holding the mobile phone such as (visually).

  Accordingly, the driver quickly grasps the mobile phone and performs various operations on the mobile phone by visually checking the parking space P where the mobile phone can be gripped and the running path shape R while traveling the vehicle A. In a case where the vehicle A is desired, a place where the vehicle A can be safely stopped can be instantaneously determined at a position (road surface) deviated from the running path shape R in the traveling direction of the vehicle A.

  Then, when the driver wants to operate the mobile phone, the vehicle A is stopped at the parking / stopping space P that is located away from the runway shape R, so that another vehicle that is traveling behind the vehicle A in particular. However, when passing the side (side) of the vehicle A while overtaking the vehicle A, the other vehicle can travel straight ahead as it is on the running road that has been traveling until now without protruding to the opposite lane. Accordingly, a plurality of vehicles traveling behind the other vehicle can also travel straight on the runway that has been traveling up to now, like the other vehicle. The other vehicle and the plurality of vehicles can travel more smoothly without hindering the traveling of the plurality of vehicles, and traffic congestion around the vehicle A can be reduced.

  Moreover, although this embodiment demonstrated the case where the parking / stopping space P consisted of the road surface for vehicle temporary stop existing in the position which deviated from the runway shape R, this invention is not limited to this, Parking / stopping space P can be applied to any place (road surface) where vehicles can be parked and stopped temporarily. For example, parking lots of various stores selling goods, libraries, stations, financial institutions, etc. Parking lots of various buildings (various facilities) may be displayed as parking spaces P.

  Further, in the present embodiment, an example has been described in which the driver displays the road surface that can be operated by gripping the operated member including the mobile phone as a parking / parking space P at a position off the road. The member can be any device that can be gripped and operated by the driver, such as various mobile communication devices such as a car phone, portable TV, portable game machine, shaver (electric razor), etc. Various electronic and electrical devices can also be applied.

  In the present embodiment, the display image L from the display device 2 is projected onto the windshield W. However, the projection member in the present invention is not limited to this, and for example, a windshield of a vehicle. You may project the display image from a display device on the combiner arrange | positioned on the surface or the dashboard of a vehicle.

  Further, instead of the above-described head-up display system, a display unit made of, for example, an organic EL panel or a liquid crystal panel may be adopted, and the driver may directly view the display on the display unit.

  Note that instead of the storage medium 13 of each of the embodiments described above, for example, a server provided outside the vehicle as a storage medium may be applied, and digital map data stored in the server may be downloaded as appropriate by wireless communication.

It is sectional drawing of the display unit of the head-up display apparatus for vehicles by 1st Embodiment of this invention. It is the schematic of the head-up display apparatus for vehicles by the embodiment. It is a block diagram of the head up display device for vehicles by the embodiment. It is a figure which shows the process sequence of the head-up display apparatus for vehicles by the same embodiment. It is a figure which shows the display image of the head-up display apparatus for vehicles by the embodiment.

Explanation of symbols

2 Display (display means)
13 Storage medium (map information storage means)
15 Control means 17 Position detection means A Vehicle L Display image P Parking space R Runway shape R3 Road shoulder R4 Auxiliary line R5 Runway surface

Claims (4)

Display means for displaying a runway shape based on map information stored in map information storage means, position detection means for detecting the current position of the vehicle, current position data of the vehicle detected by the position detection means, and A display device for a vehicle, comprising: control means for causing the display means to display a traveling road shape on the front side of the vehicle based on map information;
The control means displays a parking space for temporarily stopping the vehicle on a predetermined road surface located at a position deviating from the runway shape, added to the runway shape and displayed. . The vehicle display device according to claim 1, wherein the control means displays the road surface on which an operated member operated by gripping of a driver of the vehicle can be operated as the parking / stopping space. The vehicle display device according to claim 2, wherein the operated member is a mobile phone. The vehicle display device according to claim 1, wherein the display unit includes a head-up display.

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