JPH0341372B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for switching and displaying a plurality of image information, and for using a filter prepared in advance corresponding to the displayed information by attaching it to the display screen. The present invention relates to an in-vehicle display device.

[Prior Art] Conventionally, this type of in-vehicle display device is installed in a vehicle interior, for example, as shown in FIG. 3. That is, the center console section 1 is provided with a CRT display 2, various operation switches 3, a ROM reader 4 for reading display content information from a ROM pack in which display content is stored in advance, and the like. In such an in-vehicle display device, for example, ROM
Graph information such as remaining fuel amount, fuel efficiency, and drivable distance stored in the pack, or road map information, etc.
Displayed on the CRT display 2, superimposed on the displayed information, the remaining fuel amount, fuel efficiency, drivable distance, etc. calculated based on signals from various sensors that change from moment to moment, or current driving position information, etc. are displayed on the CRT display 2. It is now displayed on Display 2.
Furthermore, the in-vehicle display device is equipped with a television tuner, and by performing a predetermined switching operation, the CRT display 2 can display normal television broadcasts in addition to the above-mentioned vehicle running information. .

Incidentally, the above-mentioned vehicle running information is necessary information for the driver, but normal television broadcasting is information that is unnecessary for the driver who is concentrating on driving operations. Therefore, the inventors of the present application prepared in advance viewing direction regulation filters corresponding to the above-mentioned vehicle running information and normal television broadcasting, and each time the display contents on the CRT display 2 are switched, the corresponding filters are applied to the CRT display 2. It is proposed to be installed on the screen of Display 2. Here, the above-mentioned viewing direction restriction filter is a filter corresponding to vehicle information that makes the display on the CRT display 2 easier to see, especially for a person sitting in the driver's seat. A filter compatible with broadcasting restricts display light in that direction so that the display on the CRT display 2 does not enter the field of view of the person sitting in the driver's seat.

In this way, each time the content displayed on the CRT display 2 is switched to vehicle driving information or television broadcasting, the corresponding filter is applied to the CRT display 2.
By installing the driver on the screen of the driver, it is possible to prevent the normal television broadcast images from entering the driver's field of view, and the driver sees only the vehicle driving information that is originally needed.

[Problems to be Solved by the Invention] However, in the case of the above-mentioned in-vehicle display device, when the driver changes the displayed content,
Since it is necessary to both install the filter and manipulate the displayed contents, there is a problem in that it is difficult for the driver who is concentrating on driving to perform these operations.

[Means for Solving the Problems] The present invention has been made by focusing on the above-mentioned problems, and has the following features:
In an on-vehicle display device in which a filter prepared in advance corresponding to the information is attached to the display screen and used, the operation when switching image information is made as simple as possible. In the vehicle-mounted display device, a unique identification member is attached to the filter, and a determination means for determining the unique identification member is provided on the main body of the device, and display information is displayed based on the determination result of the determination means. A display switching means for switching to information corresponding to the filter is provided.

[Embodiments of the Invention] Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a block diagram showing an example of a vehicle-mounted display device according to the present invention. In this example as well, the arrangement of the device in the vehicle interior is as shown in FIG. In the figure, first, T.
To explain, a TV signal inputted through the antenna 10 is received by the tuner 11,
After the received signal is intermediate frequency amplified by an intermediate frequency amplifier 12 (IF amplifier), a video signal (including an audio signal) is extracted by a video detector 13. An audio signal from the audio channel 14 output based on the video signal from the video detector 13 is output via the speaker 15, while the video signal from the video detector 13 is output via the changeover switch 16, which will be described later. Via the signal regeneration circuit 17
The received television broadcast is displayed as an image on the CRT display 2 according to processing by the signal reproducing circuit 17.

Also, to explain the display system C for vehicle running information, the calculation circuit 18 calculates the remaining fuel amount, fuel consumption, possible travel distance, travel distance, etc. based on input signals from various sensors, while the ROM pack 20
Graph information or driving map information stored in
The ROM reader 21 reads the information, and the information read by the ROM reader 21 is selected by the video information selection circuit 22 as necessary. Then, the calculation result from the calculation circuit 18 and the information selected by the video information selection circuit 22 are converted into a video signal by the video signal creation circuit 19, and this video signal is sent to the signal reproduction circuit via the changeover switch 16. 17, the signal is reproduced 1st time.
After the processing in step 7, various vehicle running information is displayed on the CRT display 2.

On the other hand, to explain the viewing direction regulating filter that should be installed on the screen of the CRT display 2, this filter 30, as shown in FIG.
The filter body has a structure that is fitted into a frame 31, and a claw body 31 provided on this frame 31
a, 31b and protrusions 31c, 31d, 31e
Each locking hole 2 provided in the frame of CRT display 2
The filter 30 can be attached to the screen of the CRT display 2 by fitting it into the holes 2a, 2b, 2c, 2d, and 2e. For filters 30 prepared in advance especially for television broadcasting, a permanent magnet 32 is embedded in one upper corner of the frame 31 as a unique identification member of the filter 30.

Further, a reed switch 40 is provided on the frame portion of the CRT display 2 at a portion facing a permanent magnet 32 embedded in the frame body 31 with the filter 30 attached thereto. As shown in FIG. 1, this reed switch 40 has one terminal connected to the power supply Vcc and the other terminal connected to the resistor R.
is grounded through. Furthermore, as shown in FIG. 1, the in-vehicle display device is provided with a voltage discrimination circuit 41 that discriminates the voltage Vs between the terminals of the resistor R. Thus, when the voltage Vs reaches the H level, a discrimination signal is output. The changeover switch 16 normally maintains the video signal generation circuit 19 side in the display system C of vehicle running information, and when the discrimination signal is output from the voltage discrimination circuit 41, the video detection in the television broadcast reception system T is performed. It is designed to switch to the container 13 side.

In the in-vehicle display device configured as described above, when the driver wants to view vehicle running information, he or she can use a filter prepared in advance corresponding to the vehicle running information.
Attach it on the screen of CRT display 2. Then, since the filter is not provided with a permanent magnet, the reed switch 40 remains off, and no discrimination signal is output from the voltage discrimination circuit 41. Therefore, the changeover switch 16 maintains the video signal generation circuit 19 side, and the display system C of the vehicle travel information becomes effective, and the CRT display 2 displays graphs of remaining fuel amount, fuel consumption, possible travel distance, etc. display,
Alternatively, the driving position on a road map is displayed.
At this time, the effect of the filter 30 makes the display on the CRT display 2 particularly easy to see for the driver.

When the filter 30 that was previously attached to the CRT display 2 is replaced with a filter 30 prepared for television broadcasting while vehicle driving information is being displayed on the CRT display 2 as described above, the filter 30 The reed switch 40 is turned on by the magnetic force of the permanent magnet 32 provided therein, and accordingly, a discrimination signal is output from the voltage discrimination circuit 41. In response to this discrimination signal, the changeover switch 16 is switched to the video detector 13 side, and the television broadcast reception system T becomes effective instead of the vehicle running information display system C. Therefore, the display content on the CRT display 2 is automatically switched from vehicle running information to normal television broadcasting. At this time, due to the action of the filter 30, the CRT display 2
The display is out of the driver's field of vision, allowing the driver to concentrate on driving without being distracted by TV broadcasts.

In the above embodiment, the permanent magnet 32 is used as the unique identification member attached to the filter, and the discrimination means for discriminating the unique identification member is composed of the reed switch 40, the voltage discrimination circuit 41, etc.; A Hall element can also be used, and the system comprising the unique identification member and discrimination means can be configured not only by the magnetic system but also by an optical system. Furthermore, it is naturally possible to discriminate between two or more types of filters and to switch the corresponding display information accordingly.

Furthermore, in addition to the CRT display 2 as in the above embodiment, the present invention can of course be implemented in a liquid crystal display device and the like.

[Effects of the Invention] As described above, according to the present invention, the filter attached to the display screen is determined based on the unique identification member attached to the filter, and display information is transmitted to the filter based on the determination result. Since the information is switched to the corresponding information, the operation when switching the display information becomes easier. As a result, even when a driver who is concentrating on driving operations performs the switching operation, it becomes easier to perform the switching operation.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an example of an in-vehicle display device according to the present invention, and Fig. 2 is a perspective view showing the structure of the filter shown in Fig. 1, the mounting position of the reed switch in Fig. 1, and the mounting state of the filter. Figure, 3rd
The figure is a perspective view showing how the in-vehicle display device is installed in the vehicle interior. T... TV broadcast reception system, C... Vehicle running information display system, 16... Changeover switch, 30... Filter, 40... Reed switch, 41... Voltage discrimination circuit.

Claims (1)

[Claims] 1 Switching display of multiple image information and
In an in-vehicle display device in which a filter prepared in advance corresponding to the information is attached to the display screen for use, a unique identification member is attached to the filter, and a discriminating means for discriminating the identification member on the device main body side; An in-vehicle display device comprising: display switching means for switching image information to information corresponding to the filter based on the determination result of the determination means.