JPH079194Y2 - Vehicle display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is directed to an image display device mounted on a vehicle, which limits a visual range from a driver's direction to a display surface direction of the display device while traveling, and a visual angle. The present invention relates to a display device for a vehicle, which is provided with a control filter and is adapted to display and inform a driver of the contents of switching when the display device is switched.

[Conventional technology]

In the conventional image display device for a vehicle, in order to prevent the image from being seen from the driver's seat while the vehicle is driving, for example, as shown in FIG. 3, a visual angle is displayed on the front surface of the CRT 1 for image display. The louver type filter 2 limited to a specific direction is provided. When the vehicle is running, the louver type filter 2 is attached to the front surface of the CRT 1 and the louver 3 of the louver type filter 2 blocks light toward the driver's seat 4. However, the louver 3 does not block the light toward the passenger seat 5 and the rear seat 6, so that the image of the CRT 1 can be seen from the passenger seat 5 and the rear seat 6. The louver filter 2 is removed while the vehicle is stopped so that the CRT 1 can be seen from the driver's seat 4 as well as from the passenger seat 5 and the rear seat 6.

In addition, the applicant of the present application is aware that the louver type filter 2 as shown in FIG.
Since it is inconvenient to put on and take off, the liquid crystal panel 7 is used as a viewing angle control filter as shown in FIG. The light has a transmittance of curve C in the figure.
However, the CRT1 can be seen from the direction B of the passenger seat 5 and the rear seat 6. No voltage is applied to the liquid crystal panel 7 while the vehicle is stopped, so that the CRT 1 can be seen not only from the passenger seat 5 and the rear seat 6 but also from the driver's seat 4 (Practical application Sho 62- 1213
See No. 86).

[Problems to be solved by the device]

By the way, in such a vehicular display device, the liquid crystal panel 7 is adapted to always block the light toward the driver's seat 4 while the vehicle is running. There was a problem in that it was inconvenient and uncomfortable because the person could not confirm what was received.

The present invention has been made in view of such a conventional problem, and an object thereof is to obtain a vehicle display device capable of displaying a switching screen to notify the driver.

[Means for Solving the Problems]

The present invention has a structure as a means for solving the above-mentioned problems, and includes a display device provided with a viewing angle control filter on the front surface, which limits a visible area from a driver's direction to a display screen direction with application of a voltage, When switching the display of the display device, a filter control means for stopping the application of the voltage to the viewing angle control filter for a predetermined time, and an image for displaying the switching content on the display screen of the display device for the predetermined time. A display means is provided.

[Action]

Next, the operation of the present invention will be described. When a voltage is applied to the viewing angle control filter provided on the front surface of the display device, the display image cannot be viewed from the driver's direction, but when the display of the display device is switched, the filter control means causes the display image to change. The voltage application to the viewing angle control filter is stopped for a predetermined time. Then, the image display means displays the switching contents on the display screen of the display device for a predetermined time, and the driver can see the display.

〔Example〕

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

FIG. 1 is a block diagram showing an embodiment of the present invention. In order to limit the viewing area from the driver's direction to the display screen direction of the television receiver 11 on the front surface of the television receiver 11 which is a display device. ,
A liquid crystal panel 12 is provided as a viewing angle control filter. Further, a liquid crystal panel drive control device 13 which is driven by applying a voltage to the liquid crystal panel 12 is provided.
The liquid crystal panel drive control device 13 includes a television switch-on signal 14 for blackening the direction of the driver's seat of the liquid crystal panel 12.
And the vehicle running signal 15 are input. TV receiver
A tuner 16 is connected to 11, and a channel switching device 17 is connected to the tuner 16. Further, the liquid crystal panel drive control device 13 is operated by the channel switching device 17 and has a function of turning off the operation of the liquid crystal panel 12 for a predetermined time (stopping the voltage application to the liquid crystal panel 12 for a predetermined time) at the time of channel switching. It is controlled by a timer switch 18 as a filter control means. The tuner 16 not only has the function of tuning to the broadcast frequency by the channel switching device 17, but also the tuner 16
Has a built-in image generation device 19 as an image display means for displaying the numerical value of the switched channel on the screen of the television receiver 11 for a predetermined time in synchronization with the timer switch 18 when the channel is switched. .

The liquid crystal panel 12 on the front of the television receiver 11 receives the liquid crystal drive control device 13 in response to the television switch-on signal 14 and the traveling signal 15.
Is controlled and a voltage is applied, the direction of the driver's seat turns black, and the TV cannot be viewed by the driver. However, the channel of the TV receiver 11 is a channel switching device.
When switched by 17, the timer switch 18 operates to turn off the liquid crystal panel 12 for, for example, 2 to 3 seconds. Then, when the channel switching device 17 operates, the image generating device built in the tuner 16
19 is activated, and the value of the switched new channel is displayed on the screen of the television receiver 11 at the same time as above.
Display for 3 seconds only.

FIG. 2 shows an example of the display, and the screen of the television receiver 11 shows that the eight channels of the television are received by the letters 20 and the numbers 21. Several kinds of contents of such an image are stored in the image generating device 19, and the stored image is selected and displayed at the time of channel switching.

In this way, even when a liquid crystal panel that blocks light in the direction of the driver is provided on the front surface of the television receiver 11, the driver who is driving can know which channel is being received, No discomfort.

In the above embodiments, the case where the display device is a television receiver has been described, but the present invention is not limited to the television receiver and can be applied to other display devices such as a guide map display device and a navigation device.

Furthermore, in the above-described embodiment, the time when the operation of the liquid crystal panel 12 is turned off is the same as the time when the numerical value of the channel is displayed, but the time is not limited to this.

[Effect of device]

Since the present invention has the above-described configuration and operation, in a device in which a display device mounted on a vehicle or the like is hidden from the driver's seat while the vehicle is traveling, the driver also confirms the switching contents when switching the display. It is possible to avoid discomfort.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a vehicle display device according to an embodiment of the present invention, FIG. 2 is a diagram showing an example of display on the display device, FIG. 3 is a configuration diagram of a conventional louver type viewing angle control filter, and FIG. The figure is a diagram showing the configuration in the case where a liquid crystal panel type viewing angle filter is attached, and the transmittance in each direction of the liquid crystal panel. 11 …… TV receiver (display device) 12 …… Liquid crystal panel (viewing angle control filter) 13 …… Liquid crystal panel drive control device 17 …… Channel switching device 18 …… Timer switch (filter control means) 19 …… Image generation device (Image display means)

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G09F 9/00 315 Z 7610-5G G09G 5/00 550 A 9471-5G Z 9471-5G

Claims (1)

[Scope of utility model registration request] 1. A display device provided with a visual angle control filter on the front surface, which limits a visual recognition range from a driver's direction to a display screen direction when a voltage is applied, and the visual angle control filter when switching the display of the display device. A vehicle provided with filter control means for stopping the application of voltage to the display for a predetermined time and image display means for displaying the switching content on the display screen of the display device for the predetermined time when the display is switched. Display device.