JPS5924968Y2 - display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in display devices used in vehicle position display devices and the like.

Devices for detecting and displaying the position of moving vehicles, ships, etc. include radars based on the PPI system, LORANs, and tags.

However, these devices detect their own position on the chart by emitting radio waves from themselves and receiving reflected waves from objects, or by receiving radio waves from fixed stations. It is very large-scale and cannot be applied to a simple position detection device that detects the traveling position of a car, for example.

In view of this, the present applicant determines the traveling route by combining the own traveling distance and the traveling direction detected for each unit traveling distance, and traces this on a display device with a map in the background. , filed a patent application for a simple position display device in 1986-10.
It has already been proposed as No. 2264 "Vehicle position display device".

FIG. 1 is a block diagram of this position display device.

1 is a distance determination circuit, 2 is a step pulse generator, 3 is a direction sensor, 4 is a display device drive circuit, 5 is a display device, and 6 is a position adjuster.

The distance determination circuit 1 detects the distance from the trip meter output, sends a signal every unit distance (travel distance corresponding to the basic display interval of the display device 5), and triggers the step pulse generator 2.

Therefore, the step pulse generator 2 generates a step pulse every time the vehicle travels the basic display distance, and drives the display drive circuit 4 for each step.

Further, the direction sensor 3 detects the advancing direction of the own army, and is configured using, for example, a magnet.

The output of the direction sensor 3 is detected every time a step pulse is generated, and the display drive circuit 4 determines the drive direction of the display point for each step.

Therefore, if the starting position of the display point is determined in advance on the display device 5 (point a), the display point will automatically move according to the progress of the car, and the display point will be inserted into the back of the display device 5. Combined with the map, it displays the progress position of your army.

The position adjustment device 6 is used to correct long-term errors caused by meandering of the vehicle, etc., and manually drives the display drive circuit 4 to correct the position.

The present invention provides the above-mentioned display device 5 in this vehicle position display device.
In particular, the object is to obtain an improved display device that can be installed in a car with limited space.

The display device 5 in the vehicle position display device is E.
Panel displays using L elements or plasma display elements, and display devices that display by mechanically moving light emitting elements such as LEDs have been proposed.

These display devices are equipped with a map at an arbitrary scale on the back, and a commercially available road map is used as this map.

However, most commonly used road maps are of A4 size, and therefore the display device 5 requires an area of A4 size, which causes space problems when installed in a narrow vehicle such as a passenger car.

Especially if this display device is fitted onto the meter grill or dash board, such as a car stereo or car radio,
Although it is very convenient in practical use, it is practically impossible to fit it into the meter grille if it has a display area of A4 size.

The present invention has been made in view of this problem and proposes an improved display device that can display a large map on a small display area and display the progress of a vehicle.

This device of the present invention has a width in the transverse direction of, for example, A4 size, and when the display point reaches the upper and lower ends, the map equipped on the back side automatically slides together with the display point, and the map other than the A4 size map is automatically slid. The above object is achieved by having a structure in which the portion reaches above the display surface, and therefore a large effective display area can be obtained with a small display area.

The device of the present invention will be explained in detail below by showing examples.

FIG. 2 is an external view of a display device according to an embodiment of the present invention.

Reference numeral 11 denotes a cabinet, and 12 a display surface on which a map is displayed, which is hollowed out from an EL display panel or a plasma display panel, and a map is attached to the back of the cabinet so that it can be slid up and down, as will be described later.

Reference numeral 13 denotes a direction classification display for displaying the output of the direction sensor 3 shown in FIG. 1 above.

14.15° 16 and 17 are various adjustment knobs of this vehicle position display device. For example, 14 is a map scale rate hole key.
Reference numeral 115 denotes a display position adjustment knob which is used for adjusting the current position at the start and correcting errors, and is used to provide a predetermined input to the position adjustment device 6 shown in FIG. 1 above.

16 is a start knob, and 17 is a power knob. The start knob 16 is used to command the set state of the device after the power is turned on, and the display position adjustment knob 15 sets the display point 18 to the current position of your army on the map displayed on the display screen 12. After this, when the start knob 16 is operated to set the device to the driving state, the display point 18 will automatically move on the map as the vehicle progresses.

Reference numeral 19 is a map feed knob unique to the device of the present invention, which is used to manually slide the map attached to the back of the display surface 12.

Reference numeral 20 is a part of the cabinet, and is a lid for putting in and taking out maps and the like.

Next, attachment of the map to the display surface 12 will be explained with reference to FIG. 3, which is a sectional view of the main part of the apparatus shown in FIG. 2, and FIG. 4, which is an explanatory diagram of its operation.

First, in Fig. 3, 21.21' is a drive roller, 22
゜22' is a pressure roller, and drive rollers 21, 21'
The space between them is connected by a belt 23.

Further, 24 is a map, and by selecting the surface of the belt 23 as having a large coefficient of friction, this map 24 can be created by the belt 23.
Move closely to 3.

The drive roller 21 is linked to the map feed knob 19, so that the map can be set manually.

The map is set on the display surface 12 in the following manner.

As shown in FIG. 4A, first open the lid 20, place the bottom of the map 24 between the belt 23 and the pressure roller 22, and drive the map feed knob 19 to roll the map downward.

When the top end of the map enters the cabinet 11 (Fig. 4 opening), close the lid 20, and then adjust the map to the desired position on the display surface 12 by rotating the map feed knob 19 in the forward or reverse direction. do.

When the map feed knob 19 is reversed with respect to the direction in which the map is wrapped around the belt 23, the upper end of the map 24 hits the inner surface of the cabinet 11 and moves to the left, as shown in the figure.

The drive rollers 21 and 21' are connected to a drive device such as a motor as will be described later, and are driven when the display spot reaches the upper or lower limit of the display surface 12, so that the map 24 is moved so that the display point is at the upper or lower limit of the display surface 12. Move it so that it is near the central part of the coast.

At this time, the display point 18 must also move in accordance with the movement of the map 24, and therefore the drive device for the display point 18 is linked to a drive signal from a motor or the like.

FIG. 5 is a block diagram of a mechanism for moving the map and moving the display point.

When the display surface 12 is now a matrix-like display panel, 25 and 26 in the figure are drive circuits for the X-axis and Y-axis directions, which are driven by the input of shift pulses and shift in either the left/right or up/down direction. Whether or not to do so is determined by a determination signal that is output from the direction sensor.

The intersection of the selected electrode lines on the X and Y axes emits light and becomes a display point 18.

Now, the display point 18 in the figure is driven as the vehicle advances,
When moving along the road 27 on the map 24 and reaching the upper end A of the display surface 12 (that is, when the top line of the Y-axis drive circuit 26 is selected), an output pulse is generated from the drive circuit 26 and the map drive The circuit 28 is driven, the stepping motor 29 is rotated, and the map 24 is moved so that the point A is located at the center B of the display surface 12.

Simultaneously with this movement, the drive circuit 28 is reset, and the display point 18 becomes point B in the center.

Thereafter, when shift pulses corresponding to the progress of the vehicle are input again to the drive circuits 25 and 26, the display point 18 is shifted while tracking the direction of travel of the vehicle.

FIG. 6 shows another embodiment of the present invention, and the feature of this embodiment is that the display device is a one-dimensional screen 31 in which light-emitting points 30 are arranged in one row.

In this case, in the -dimensional display 31, the display points on the X-axis are driven by the X-axis drive circuit 25, but the display points on the Y-axis are driven by moving the entire screen 31 up and down via a belt 32, for example. The driving belt 32 is connected to a stepping motor 33, and the stepping motor 33 is driven by the output of the Y-axis drive circuit 26, similar to the embodiment shown in FIG.

In this device, when the display 31 reaches the top or bottom of the screen, the motor 33 reverses and the display 31 reaches the top or bottom of the screen.
1 and the map together and drive in the opposite direction.

In this way, the display 31 is positioned at the center of the display surface 12, and a new portion of the map is displayed on the display surface 12, thereby preparing for displaying the next progress of the vehicle.

In this device, the display device may be a panel-shaped display placed on the front side of the map, or a light emitting diode or the like may be placed on the back side of the map to emit light.

As described above with reference to the embodiments, in the display device according to the present invention, when the display point reaches a predetermined position on the display screen, for example, the top or bottom edge of the display screen, the map is automatically moved and a new portion is displayed. It is placed on a surface, and therefore a substantial display effect can be achieved with a small display area.

Furthermore, the drive circuit section of the display device can be made smaller, and therefore the overall cost of the vehicle position display device employing the device of the present invention is reduced.

This vehicle position display device can be attached to dash boards etc. by using the display device of the present invention.
Further increases in usefulness.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the configuration of a vehicle position display device, Fig. 2 is an external view of the device according to the present invention and an embodiment, Fig. 3 is a cross-sectional view of the main parts of the device shown in Fig. FIG. 2 is an explanatory diagram of the operation of the apparatus shown in FIG. 2, and FIGS. 5 and 6 are block diagrams showing the configuration of the apparatus of the present invention. 12...Display surface, 18...Display point, 2
4...Map, 25°26...Display drive circuit, 28...Map drive circuit, 29...
·motor.

Claims (1)

[Scope of utility model registration request] a screen display that is superimposed on a road map and electronically displays the position of the vehicle on the road map; a direction detection means that detects a change in the traveling direction of the vehicle; a distance detection means that detects the travel distance of the vehicle; and the rain detection device. display drive control means for controlling the display points of the display to display the current position of the vehicle on the road map in a fixed state based on the detection signal from the means; means for detecting that the display point is driven to be displayed at the outer edge of the display; and when the detection means detects that the display point is driven to be displayed at the outer edge, the road map is slid with respect to the display; 1. A display device comprising: a road map that moves and displays a display point inward on a screen in accordance with the slide of the road map; and means for resetting the display point.