JP2505816B2 - Movable display device for navigation - Google Patents

Description

The present invention relates to position control of an information display section of a navigation device mounted on a vehicle.

[Prior Art] With the development of car electronics in recent years, various electronic devices have been mounted on vehicles. One of such electronic devices is a navigation device.
The navigation device is for teaching the driver of the vehicle the route to the destination, the distance and the direction of the destination.

FIG. 3 is a diagram showing a schematic configuration of the navigation device. Referring to FIG. 3, the navigation device includes a speed sensor 21 for detecting the traveling speed of the vehicle, a direction sensor 22 for detecting the traveling direction of the vehicle, and information for inputting a starting point and a destination point of the vehicle. Input device 23 and speed sensor
21, a microcomputer 24 for calculating the current position of the vehicle based on information from the direction sensor 22 and the input device 23 and the direction connecting the current position and the destination, and a display device for displaying navigation information from the microcomputer 24. 25 and.

The speed sensor 21 is commonly used as a speedometer for displaying a traveling speed of a vehicle which is conventionally used in a vehicle.

As the direction sensor 22, a magnetic sensor that determines the angle formed by the direction of the geomagnetism and the direction of the vehicle body, a gyro sensor that determines the angular velocity of the vehicle, or the like is used. In gyro sensor,
The present direction of the vehicle is obtained by time-integrating the angular velocity of the vehicle.

The display device 25 includes a CRT (cathode ray tube) display device and an L
A CD (liquid crystal display) device or the like is used. The operation of the navigation device will be briefly described below with reference to FIG.

First, the driver refers to the map and inputs the X coordinate and the Y coordinate of the destination when the starting point is the origin, using the input device 23. When the vehicle starts running, the microcomputer 24
Determines the current traveling position of the vehicle (the X component and the Y component of the traveling distance) from the speed information from the speed sensor 21 and the traveling direction information of the vehicle from the direction sensor 22. Thus, the traveling distance and traveling direction of the vehicle from the starting point can be obtained, and the current vehicle position can be detected. Display device
25 displays the current position information of the vehicle from the microcomputer 24, the traveling locus of the vehicle, and the like.

[Problems to be Solved by the Invention] FIG. 4 is a diagram showing an example of arrangement of parts of a navigation device.

Referring to FIG. 4, the speed sensor 21 is a tire 32 of the vehicle 30.
The rotation speed of a tire (wheel) provided in the vicinity is detected.
The direction sensor 22 is attached to the rear hood 35 of the vehicle 30 near the rear window 33.

The input device 23 is composed of, for example, a keyboard, and is attached to a position on the driver's side where the driver can easily handle.

The display device 25 is fixedly mounted on a control panel or an instrument panel in front of the driver's seat 31 so that the driver can easily see it.

As described above, a display device for displaying navigation information
The 25 is mounted on the control panel or instrument panel in the front or side of the driver's seat so that it is easy for the driver to see. However, the mounting angle of the display surface of the display device 25 is fixed, and the direction in which the display surface faces cannot be changed. Therefore, when the navigation information is being displayed from the navigation device while the vehicle is traveling, the driver is concerned about the displayed contents, which may lead to accidents due to inattention to the front, etc. There is a problem.

In addition, since the direction in which the display circle of the display device 25 faces is fixed, there is also a problem that the direction in which the display surface of the display device faces cannot be optimized according to the physical constitution of each driver. .

Therefore, an object of the present invention is to eliminate the problems of the above-described conventional navigation information display device and provide a highly safe navigation display device in which the direction of the display surface of the display device is movable. is there.

[Means for Solving Problems] The movable display device for navigation according to the present invention makes the direction in which the display surface of the navigation information display device faces is movable, and when the vehicle traveling speed is equal to or higher than a predetermined speed, The navigation information is not selectively displayed according to the direction in which the display surface is facing, and the direction in which the display surface faces is the driver's seat direction when the engine is restarted.

Preferably, the navigation information is not displayed when the display speed of the display device faces the driver's seat when the vehicle traveling speed is equal to or higher than a predetermined value.

[Operation] When the direction in which the display screen of the display device for displaying navigation information is directed is movable and the vehicle is traveling at a predetermined speed or higher, the navigation information is not selectively displayed. Therefore, the vehicle driver will not be distracted by the navigation information while the vehicle is traveling and will not be inadvertently in front of the vehicle, which will avoid traffic safety hazards. Since the direction in which the screen faces is movable, it is possible to optimize the display contents of the display device to the most recognizable position according to the physique of each driver, and also when the engine is restarted. By setting the direction in which this display screen faces to be the driver's seat direction, the driver can input and confirm necessary navigation information without performing extra steps. .

Embodiments of the Invention Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a schematic configuration of a movable display device for navigation which is an embodiment of the present invention.

Referring to FIG. 1, a movable navigation display device according to an embodiment of the present invention controls a CRT (cathode ray tube) 2 for displaying navigation information and a direction in which a display surface 100 of CRT 2 faces. Servo device 1 and position detector 3 for detecting the direction in which the display surface 100 of the CRT 2 is facing
And a vehicle speed sensor 4 mounted near the tire 32 of the vehicle to detect the traveling speed of the vehicle, a speed / voltage conversion circuit 5 for converting the output of the vehicle speed sensor 4 into an electric signal, and whether or not the vehicle engine is restarted. Engine restart detector 11 to detect
And a servo device drive signal applied to the input terminal 20 and in response to the position detector 3 output, the speed / voltage conversion circuit 5 output, the engine restart detector 11 output, and the external control signal applied to the input terminal 10. Control device 6 for controlling the operation of the servo device 1 and the changeover switch 7 in response to the command, the navigation display control device 8 mounted on the vehicle for generating navigation information, the vehicle speed information, the residual fuel amount information, and the engine. Other display control device 9 for generating the operating state information of the device, and the changeover switch 7 which is controlled by the control device 6 and gives the CRT 2 either the navigation display control device 8 or the other display control device 9 output or no display output.
It is composed of

In the position detector 3, the display surface 100 of the CRT 2 is in the initial position (the display surface 100 faces the driver's seat) or at a predetermined position (the display surface 100 faces the passenger seat).
Detect if there is.

When the servo device drive signal is applied to the input terminal 20, the control device 6 drives the servo device 1 to move the display surface 100 of the CRT 2 toward a predetermined position. Further, the control device 6 has an input terminal
The position detector 3 is activated when a control signal is applied to the position detector 3.
When the output indicates the initial position and the output of the speed / voltage conversion circuit 5 is equal to or more than a predetermined reference value, the changeover switch 7 is controlled to disconnect the navigation display control device 8 from the CRT 2. At this time, which of the other display control device 9 and non-display is selected by the changeover switch 7 is selected by the control signal applied to the input terminal 30.

Further, when the output of the position detector 3 indicates the predetermined position, the control device 6 continues to display the navigation information even if the output of the speed / voltage conversion circuit 5 is a predetermined reference value or more. That is, in this case, the terminals of the changeover switch 7 are not changed. Further, the control device 6 drives the servo device 1 to drive the CR device 1 when the engine restart detector 11 detects an engine restart when the output of the position detector 3 indicates a predetermined position.
The display screen 100 of T2 is returned to the initial position.

FIG. 2 is a diagram showing an example of a specific configuration of the display unit control device of the movable display device according to the embodiment of the present invention.

With reference to FIG. 2, the display screen 100 of the CRT 2 is manually movable in the vertical direction of the drawing, and the display screen is displayed at a desired angle.
A vertical clock mechanism 12 is provided to fix 100 and prevent the display screen 100 from being displaced due to vehicle vibration or the like.

The servo device 1 moves the display screen 100 of the CRT 2 in the left-right direction, that is, in the horizontal direction (the direction perpendicular to the drawing) connecting the driver seat direction of the vehicle to the passenger seat direction. Position detector 3
Detects whether it is at the initial position (direction facing the driver's seat) or at a predetermined position (direction facing the passenger seat) on the display screen 100 of the CRT 2. Such a position detector 3
Can be easily realized by using an ordinary position detection switch or the like. Next, the operation of the movable display device according to one embodiment of the present invention will be described with reference to FIGS. 1 and 2.

First, the case where the display screen of the CRT 2 is at the initial position will be described. When the vehicle driver arrives at the driver's seat, first, the display screen 100 of the CRT 2 is manually moved vertically to a position that is most easily seen by the driver to fix the display screen 100 of the CRT 2. The display screen 100 of the CRT 2 is fixed to the set optimum position by the vertical lock mechanism 12 so that the vertical displacement of the display screen due to the vibration of the vehicle does not occur. The changeover switch 7 is connected to the terminal b, and the navigation display control device 8 is connected to the CRT2. Next, the driver inputs necessary information for the predetermined navigation information into the navigation display control device 8 and then starts the engine to drive the vehicle. At this time, since the display screen 100 of the CRT 2 is at the initial position, the servo device 1 is not driven even if the engine restart detector 11 detects the restart of the engine and gives the engine restart detection signal to the control signal 6. When the driver gives a control signal to the control device 6 through the external terminal 10, the control device 6
Is activated and becomes active. Activated control device 6
Detects that the voltage signal from the speed / voltage conversion circuit 5 exceeds a predetermined value and the vehicle is traveling at a predetermined speed or more, at this time, the output of the position detector 3 is initially displayed on the display screen 100 of the CRT 2. Since it is shown in the position, the terminal b of the changeover switch 7 is switched and connected to either the terminal a or the terminal c. The connection (selection) of the terminals a and c is performed by a control signal applied to the terminal 30 of the control device 6. That is, for example, when a control signal is applied to terminal 30, terminal b is switched to terminal a, and navigation information is switched to other information display. On the other hand, when the control signal is not applied to the terminal 30, the terminal b is switched to the terminal c, and no information is displayed on the display screen of the CRT 2. When the driver gives a control signal, that is, a servo device activation signal to the terminal 20 of the control device 6, the servo device 1 is activated under the control of the control device 6, and the display screen 100 of the CRT 2 is changed from the initial position. Move to a predetermined position. In response, the position detector 3 detects that the display screen 100 of the CRT 2 is at a predetermined position and gives a predetermined position detection signal to the control device 6. At this time, the display screen of CRT2
The information displayed on 100 is the same as that before the movement of the display screen. When the navigation information is not displayed or when the navigation information is desired to be displayed, the navigation display control device 8 can be connected to the CRT 2 by giving a reset signal to a terminal (not shown), for example, to the control device 6, and the passenger seat You can have a person sitting in the room monitor navigation information.

In this way, when the vehicle is traveling at a predetermined traveling speed or higher, the driver will not be distracted by the navigation information and fall into a state of carelessness in the front, so that safe driving can be continued.

Next, the operation when the display screen 100 of the CRT 2 is at a predetermined position will be described. First, when the driver restarts the engine (transition from the engine stopped state to the started state) and applies the control signal to the control device 6 through the terminal 10 when the display screen 100 of the CRT 2 is in the predetermined position, the control is performed. In response to the predetermined position detection signal from the position detector 3 and the engine restart detection signal from the engine restart detector 11, the device 6 drives the servo device 1 to initialize the display screen 100 of the CRT 2 from the predetermined position. Return to position. The driver inputs necessary navigation information through the navigation display control device 8 while looking at the display screen 100 that has returned to the initial position. After this,
A servo device activation signal is applied to the control device 6 via the terminal 20 to move the display screen 100 of the CRT 2 to a predetermined position via the servo device 1. When the vehicle is driven in this state, the position detector 3 outputs a predetermined position detection signal. Therefore, even if the voltage signal from the speed / voltage conversion circuit 5 is a predetermined value or more, the terminals of the changeover switch 7 are not switched. No, the navigation information continues to be displayed.

Although the vehicle speed sensor is provided separately from the vehicle speed sensor for navigation in the above embodiment, this may be shared with the vehicle speed sensor for navigation.

Further, in the above embodiment, the navigation information is described as being derived from the vehicle speed sensor and the direction sensor, but this may be applied to other systems such as a navigation system using a communication satellite.

Furthermore, in the above embodiment, the
The case of using T has been explained, but other LCDs (liquid crystal display devices)
The same effect as in the above embodiment can be obtained even with the display device using.

Further, although details of the configuration of the control device have not been described in the above-mentioned embodiment, it is possible to easily form a circuit configuration which satisfies the above-mentioned operation timing by using a logic gate or the like. For example, assuming that the initial position detection signal from the position detector 3 is "0" and the predetermined position detection signal is "1", a comparator for comparing the output of the speed / voltage conversion circuit 5 with a predetermined reference value is provided. The NAND output switching output of the comparator output and the position detector output can be used as the switch switching signal.

Further, as an example, the engine restart detector may be a one-shot multivibrator that is activated in response to the rise of the engine start detection (for example, the ignition switch is in the ON state) and generates a pulse for a predetermined time. At this time, if the output of the signal position detector 3 and the output of the engine restart detector 11 are ANDed and applied to the reverse rotation terminal of the servo device, the display screen 100 can be returned to the initial position only when the engine is restarted.

Further, in the above-mentioned embodiment, the display information content on the display screen 100 is switched from the navigation information to no display or from the navigation information to other information display. At this time, the display information from the navigation display control device 8 and other information are manually displayed. If it is possible to switch the display information from the display control device 9, a plurality of types of information can be displayed using one display screen, and the installation space in the vehicle can be significantly reduced. Therefore, the degree of freedom in arranging the device is significantly increased.

[Effects of the Invention] As described above, according to the present invention, the direction in which the display screen of the display device for displaying navigation information faces is movable, and the display screen shows the direction of the driver's seat when the vehicle is traveling at a predetermined speed or higher. When the vehicle is facing the vehicle, the navigation information is not displayed, and the driver cannot see the navigation information when the vehicle is always traveling at a predetermined speed or higher. It is effective for traffic safety without being inattentive to the front because the navigation information is taken into consideration. In addition, since the position (angle) of the display screen of the display device is also movable in the vertical direction, it is possible to set the display screen angle of the display device to the position that is most easy to see according to the physique of each driver. The visibility of can be improved. Also, since the display screen is configured to return to the initial position when the engine is restarted, the driver can easily set the navigation information while looking at the display screen, which is effective from the viewpoint of system configuration. Is. That is, according to the present invention, it is possible to select the display content of the navigation information display device by detecting the direction of the display screen of the navigation information display device, the traveling speed of the vehicle, and the restarted state of the engine. Therefore, it is possible to obtain an effect when the navigation device is mounted on the vehicle in terms of function and traffic safety.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a movable display device for navigation which is an embodiment of the present invention. FIG. 2 is a diagram showing a schematic configuration of a display screen drive mechanism of the movable diffusive display device according to an embodiment of the present invention. FIG. 3 is a diagram showing an example of the configuration of a conventionally used navigation device. FIG. 4 is a diagram showing a schematic arrangement of components used in the navigation device. In the figure, 1 is a servo device, 2 is a display device, 3 is a position detector, 4 is a vehicle speed sensor, 5 is a speed / voltage conversion circuit, and 6
Is a control device, 7 is a changeover switch, 8 is a navigation display control device, 9 is another display control device, 10 is a control signal input terminal, 12 is a vertical locking mechanism, 20 is a servo device activation signal input terminal, and 30 is Display mode selection signal input terminal,
100 is a display screen of the display device. In each drawing, the same reference numerals indicate the same or corresponding parts.

Claims (4)

(57) [Claims] 1. A movable display device including a display device mounted on a vehicle, the display device having a display screen for displaying navigation information including current position information of the vehicle, the navigation information being navigation mounted on the vehicle. It is provided by an information generating device, is coupled to the display device, comprises a display position changing means for changing the direction of the display screen, the display screen is movable in the horizontal and vertical directions, A means for driving the display position changing means in response to a control signal given from the outside, a position detecting means for detecting a direction in which the display screen is facing, a speed detecting means for detecting a traveling speed of the vehicle, the position detecting A selection connection for selectively connecting the navigation information generating device to the display device in response to the output of the means and the output of the speed detecting means. Means, and in response to an engine restart detection signal indicating engine restart of the vehicle and the output of the position detecting means, the display position changing means is driven so that the display screen faces the driver's seat of the vehicle. Movable display device for navigation, comprising means. 2. The movable display device for navigation according to claim 1, wherein the position changing means changes the direction of the display screen in at least one of a horizontal direction and a vertical direction. 3. The movable display for navigation according to claim 1, wherein the display device further comprises a lock means for fixing the direction in which the display screen is oriented with respect to the vertical direction. apparatus. 4. The selective connecting means detects that the output of the speed detecting means is equal to or higher than a predetermined traveling speed and the output of the position detecting means indicates that the display screen faces the driver's seat of the vehicle. The movable display device for navigation according to any one of claims 1 to 4, wherein the display device and the navigation information generating device are separated from each other during detection.