JPH044593B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an on-vehicle display device, and more particularly to a display device that displays various information using display means such as a cathode ray tube provided inside a vehicle.

Information that should be displayed in a car includes information necessary for driving such as speed, door opening/closing, fuel level, oil level, parking brake status, etc. For products, there is information such as sound quality, volume, tape rotation status, etc., and conventionally, this information has been displayed on display devices using liquid crystals, plasma displays, LEDs, etc.

In addition, display devices have recently been developed that have a cathode ray tube mounted near the driver's seat and display a road map on the tube to display the current driving location and route. However, in-vehicle television receivers are already commercially available. Therefore, a single cathode ray tube is installed, and this cathode ray tube can selectively display the various information mentioned above as well as images from video information sources such as general television broadcasts and video tape recorders (hereinafter referred to as VTRs). Conceivable. This makes it possible to simplify the display device, but on the other hand, when driving a car, it is possible to
If the VTR images entered the driver's field of vision, safety problems would arise.

The present invention has been made in order to eliminate the above problems, and is an in-vehicle device that can selectively display various information and images from video information sources such as general television broadcasts and VTRs while maintaining safety. The purpose is to provide a display device.

The in-vehicle display device according to the first invention of the present application is capable of displaying images showing information necessary for driving, images showing information related to automobile accessories, and images from other image information sources using a single display means such as a cathode ray tube. a controller that controls to selectively display at least one of the images in response to a selection operation command;
and means for detecting whether or not the vehicle is running, and configured to prohibit at least the display of images from the video information source while the vehicle is running, regardless of the operation command. There is. Further, the in-vehicle display device according to the second invention of the present application includes images showing information necessary for driving using a display means such as a single cathode ray tube, images showing information related to accessories of the automobile, and other image information sources. a controller for controlling selectively displaying at least one of the images from the display according to a selection operation command; means for detecting whether the automobile is running; and means for detecting the position of the display surface of the display means. detecting means, and configured to prohibit at least the display of the image from the image information source regardless of the selection operation command when the display surface of the display means is at a predetermined position while the vehicle is running. It is a feature.

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

FIG. 1 is a block diagram showing one embodiment of the present invention. In the figure, 1 is an AM/FM radio antenna, 2 is an AM/FM tuner that selects, amplifies, and detects the signal from antenna 1, 3 is a tape deck that plays back cassette tapes, etc., and 4 is the speed of the car and the fuel consumption. amount, amount of oil, opening and closing of the door,
It is an information signal source regarding the driving and traveling of a vehicle, such as the driving position, and serves as a means for detecting whether or not the vehicle is traveling. 5 is TV Jiyeon (hereinafter referred to as TV)
) antenna, 6 is a TV high frequency amplification unit that selects and amplifies the signal from this antenna 5, 7
is a TVIF amplification/detection unit that amplifies and detects the signal converted to an intermediate frequency by this TV high frequency amplification unit 6;
31 is a VTR (video tape recorder), and the IF
Each audio signal from the amplification/detection section 7 and the VTR 31 is applied to each terminal 32a, 32b of a switch 32, and each video signal is applied to each terminal 33a, 33b of a switch 33, respectively. The switches 32 and 33 cooperate with each other to constitute a video information source selection switch. 8 and 9 are information selection switches, and these switches are interlocked with each other. Switch 8 is for switching video information other than television, and terminal 8a has electric field strength from AM/FM tuner 2,
Signals such as the tuning frequency and AM/FM distinction are sent to the terminal 8b from the tape deck 3 in the tape running direction,
Signals such as tape speed, remaining amount of tape, and volume are applied to the terminal 8c, and a car information signal from the information signal source 5 is applied to the terminal 8c, and these information signals are selected. The signal selected by switch 8 is transmitted to character generator 10, image system memory 11, and synchronization signal generator 1.
2. The signal is processed by the modulator 13 and becomes a video signal, which becomes one input of the switch 18. Switch 9 is for switching the audio signal, and terminal 9a has
The audio signal from AM/FM tuner 2 is sent to terminal 9.
b, the audio signal from tape deck 3 is connected to terminal 9.
The audio signals from the IF amplification/detection section 7 or the VTR 31 selected by the switch 32 are applied to d, and these audio signals are selected. The audio signal selected by the switch 9 is transmitted to the audio output amplifier 14.
The speaker 15 is driven through the. IF amplification/detection section 7 or VTR 31 selected by switch 33
The video signal from is supplied to switches 16 and 17.

The switch 16 is configured to operate depending on the position or angle of the display surface of a cathode ray tube 24 relative to the driver's seat, which will be described later. For example, as shown in FIG. 2, a display device 25 including a cathode ray tube 24 is rotatably mounted on a dash board 28 in an automobile, and the display surface of the display device 25 faces the passenger seat side or When the angle is within a predetermined angle range on the passenger seat side (when rotated in the direction of the arrow in the figure), the switch 16 is turned on. Specifically, Figure 3a
As shown in FIG. 2, a switch lever 27 made of a spring material is installed at the bottom of a rotary table 29 that rotatably supports a display device 25 with respect to a dart board 28 (second illustration).
Furthermore, the switch 16 is mounted on a stand 26 to which the dart board 28 is fixed so as to be located below the turntable 29, and the switch 16 is operated by a switch lever 27 which rotates together with the turntable 29 when the turntable 29 is rotated. It is configured to turn on and off. FIG. 3b shows the switch 1 for the stand 26.
6 is shown, and with the display surface of the cathode ray tube 24 facing the passenger seat side A, press the switch lever 2.
7 is in pressure contact with the switch 16, so that the switch 16
is in the on (closed) state, and when the rotary table 29 is turned counterclockwise in the figure with respect to the stand 26 to face the driver's seat side B, the pressure contact between the switch lever 27 and the switch 16 is released, and the switch 16 is turned off. Off (open)
state. By fixing the rotary table 29 with means (not shown) such as a spring with the switch 16 in the on position and the display surface of the cathode ray tube 24 facing the driver's seat, the position will not change due to vehicle vibrations, etc. . Please note that switch 1 is only available in one location on the passenger seat side.
6 is configured to operate, but it may be configured to operate within a predetermined angle range on the passenger seat side.

As another specific example, as shown in FIG. 4, the display device 25 is movable along the guide member 30 between the driver's seat side and the passenger seat side, and the display device 25 is moved between the driver's seat side and the passenger seat side. It is also possible to configure the switch 16 to be actuated by a switch lever 27 that is linked to the display device 25 at certain times.

In FIG. 1, the switch 17 is connected to the information signal source 4.
Switching is controlled by a speed information signal from, for example, a speedometer signal, and the terminal is switched to the terminal 17a when the vehicle is running, and to the terminal 17b when the vehicle is stopped. As the switch 17, well-known means such as a relay or a transistor switch can be used. switch 16 and 17
has an OR circuit configuration, and when the car is stopped or the display surface of the cathode ray tube 24 is facing the passenger seat, the IF amplification/detection section 7 passes through the switch 33.
Alternatively, the video signal from the VTR 31 is passed through.
This video signal becomes another input to the switch 18. This switch 18 selects between a signal from the tuner 2, tape deck 3, or information signal source 4 and a signal from the television broadcast or VTR 31. In the case of a television having a video input terminal, an attached switch can be used as the switch 18. The circuit after switch 18 is a normal television circuit, and the signal passing through switch 18 is
Video frequency amplification section 19, synchronization circuit 20, high voltage circuit 2
1. Color signal control circuit 22, deflection circuit 23
After processing, the image is displayed as an image on the cathode ray tube 24.

Next, the operation of the present invention will be explained. The signal from the TVIF amplification/detection unit 7 or VTR 31 selected by the switch 33 is transmitted to the switches 16 and 17.
is supplied to When the display device 25 is located near the passenger seat or its display surface is facing the passenger seat, the switch 16 is in the on (closed) state, so the switch 18 is on the television side, that is, the terminal 18 is in the on (closed) state.
If it is on the b side, the signal that has passed through the switch 16 passes through the subsequent television circuit and is displayed on the cathode ray tube 24 as an image. Therefore, the person in the passenger seat or the rear seat can enjoy television broadcasts or programs on the VTR 11. At this time, the image on the cathode ray tube 24 does not come within the driver's field of view.
When the display device 25 is on the driver's seat side or its display surface faces the driver's seat side, the switch 16 is in an off (open) state. In this state, when the car is running, the switch 17 is on the terminal 17a side, so the signals from the IF amplification/detection section 7 or the VTR 31 that have passed through the switch 37 are blocked by the switches 16 and 17. That is, when the display surface of the display device 25 is located at or at an angle toward the driver's seat and the vehicle is running, display of television broadcasts or VTR images is prohibited. On the other hand, when the car is stopped, the switch 17 is on the terminal 17b side, so even if the display surface of the display device 25 is within the field of view of the driver and the switch 16 is in the OFF state, the signal is sent to the switches 17 and 18. The signal is then supplied to the television circuit, and the image is displayed on the cathode ray tube 24.

It should be noted that the present invention is not limited to the above-mentioned embodiments and can be modified in various ways, for example, the switch 16
The positional relationship between the switch lever 27 and the switch lever 27 may be reversed.
The switch 16 is not limited to a mechanical one, and may be one that uses a piezoelectric element to control a semiconductor switch.Furthermore, a time constant circuit may be installed in the switch 16 or 17, so that the switch 16 is not limited to a mechanical one. It is also possible to have a configuration that holds the position. Further, the display may be controlled only according to the position or angle of the display device 25 without controlling based on the running state of the car, and the switch 1 may be controlled based on the speed information signal, which is a means for detecting whether or not the car is running.
Instead of the control of 7, it is also conceivable to turn on the switch 17 only when the engine is in neutral according to gear position information, or turn on the switch 17 only when the engine is not rotating according to engine rotation information. Furthermore, as a display means, in addition to a cathode ray tube, a liquid crystal television or the like may be used. Also, there is a display in the display device 25 that is always on (closed) and turned off (open) when driven by an external actuator.
A switch is provided for the state, and this switch is set to the first state.
If the switch 16 in the figure is used and the actuator is activated only when the display device 25 is placed in a predetermined position facing the driver, when the display device 25 is faced toward the passenger seat or moved to the rear seat, It is also possible to automatically turn on the switch so that the prohibition of displaying images of television broadcasting is lifted. Furthermore, in addition to the tuner and tape deck, a digital audio player may be installed, and it is also possible to use a video disk player as a video information source.

FIG. 5 is a block diagram showing another embodiment of the present invention, in which parts equivalent to those in FIG. 1 are designated by the same reference numerals, and only the parts different from those in FIG. 1 will be described. Reference numerals 8, 9, and 18 are information selection switches, and these switches are interlocked with each other.
The switch 8 is used to switch video information other than television, and vehicle information from the information signal source 4 is applied to terminals 8c and 8d, which are connected to each other. Switch 9 is for switching the audio signal, and terminal 9c
An alarm sound such as an intermittent sound or a pseudo sound that is emitted when the amount of fuel or oil is low, for example, is applied from the information signal source 4 to the information signal source 4. Switch 16 is cathode ray tube 24
When the terminal is facing the driver's seat side, the switch is switched to the terminal 16a side, and when the terminal is facing the passenger seat side, the switch is switched to the terminal 16b side. The switches 17 and 17' are interlocked with each other and are configured to be switched to the terminals 17a and 17a' when the vehicle is running, and to the terminals 17b and 17b' when the vehicle is stopped.

Next, this effect will be explained. In the embodiment shown in FIG. 1, the display device 25 is located on the driver's seat side or at an angle facing the driver's seat in the TV position, and nothing is displayed on the cathode ray tube 24 when the car is running. In this example, vehicle information is displayed on the cathode ray tube 24 in such a case. That is, since the display device 25 is on the driver's seat side, the terminal 16b of the switch 16 is open, and since the car is running, the terminal 17b of the switch 17 is open, so there is no signal from the TVIF amplification/detection section 7 (or VTR 31). The signals are cut off by switches 16 and 17. On the other hand, switch 8
Because of the TV position, terminal 8d is connected and outputs vehicle information. This signal is sent to switch 17'
Since the car is running, the signal is applied to the terminal 17a' of the switch 17' and is applied to the terminal 16a through the switch 17', and is supplied to the cathode ray tube 24 through the terminal 18d of the switch 18 to display information about the car. Therefore, while the car is running, the cathode ray tube 24 displays car information.
Regarding television broadcasts (VTR31 programs), only audio that does not affect driving safety can be heard, and the system allows drivers to hear the progress of TV dramas and matches even while driving.

FIG. 6 shows a modification of FIG. 3, in which the rotary table 29 used in the embodiment of FIG. 3 is omitted. In this embodiment, a convex portion 34 having a circular head is attached to the dash board 28 by screwing, and a concave portion 35 corresponding to the circular convex portion 34 is attached to the bottom of the display device 25.
The display device 24 can be rotated around the protrusion 34 by forming the protrusion 34 and placing the recess 35 so that they fit together. Further, the switch 16 is attached to the dash board 28 and uses the spring properties of the switch 16 to press the convex top 36 against the dash board 28 so that its tip protrudes through the hole in the dash board 28 and corresponds to the display device 24. Due to the structure in which a recess 37 is formed at the passenger seat position, the top 36 fits into the recess 37 and the switch 16 is turned on, and in the rotating position on the driver's seat side, the top 36 is pushed down by the bottom of the display device 24. Therefore, the switch 16 is turned off. Therefore,
Even with a structure in which the rotating table 29 in FIG. 3 is omitted, the same effects as in the embodiment shown in FIG. 3 can be obtained.

As detailed above, according to the present invention, images showing information necessary for driving, images showing information related to automobile accessories, and images from other image information sources are displayed on a single display means such as a cathode ray tube. At least one of the images is selectively displayed in response to a selection operation command, and the selection operation command is performed when the car is running or when the display surface of the display means is at a predetermined position while the car is running. For example, when a car is running and the display surface is within the field of view of the driver, the display of images from TV broadcasts or VTRs can be prohibited. , maintain driving safety,
Furthermore, when the car is not running, television broadcasts and the like can be enjoyed without having to adjust the position or angle of the display means or turn on a switch.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention;
FIG. 2 is a schematic perspective view showing the interior of an automobile equipped with a display device according to the present invention, FIG. FIG. 5 is a block diagram showing another embodiment of the invention, and FIG. 6 is a front view showing a modification of FIG. 3. Explanation of symbols of main parts, 2...AM/FM tuner, 3...Cassette deck, 4...Information signal source, 6...TV high frequency amplification section, 7...IF amplification/detection section, 8, 9, 16, 17, 18...Switch,
24... Braun tube, 25... Display device, 28...
...Datsushi board, 31...VTR.

Claims (1)

[Scope of Claims] 1. A single display means, and a video showing information necessary for driving by the display means, a video showing information related to ancillary equipment of the automobile, and a video from a video information source other than these. a controller configured to selectively display at least one of the following in response to a selection operation command; and means for detecting whether or not the vehicle is running; An in-vehicle display device characterized in that it is configured to prohibit display of at least video from the video information source regardless of an operation command. 2. The vehicle-mounted display device according to claim 1, wherein the video information source is at least one of general television broadcasting and a video tape recorder (VTR). 3 Selecting at least one of a single display means and images showing information necessary for driving by the display means, images showing information related to accessories of the automobile, and images from other image information sources. The controller comprises: a controller for selectively displaying information according to an operation command; means for detecting whether or not the vehicle is running; and means for detecting a position of a display surface of the display means. An in-vehicle device characterized in that the display device is configured to prohibit displaying at least an image from the image information source regardless of the selection operation command when the display surface of the display means is at a predetermined position while the automobile is running. display device. 4. The position or angle of the display surface of the display means with respect to the driver's seat of the automobile is variable, and the controller prohibits the display of only images from the video information source according to the position or angle of the display surface of the display means. The third claim characterized in that
The in-vehicle display device described in Section 1.