JPH07121799A - Display device for vehicle - Google Patents

Abstract

PURPOSE:To make a driver feel as if he or she sees an optical mirror on the display device for the vehicle which uses a television camera. CONSTITUTION:This device is provided with a 1st television camera 10a and a 2nd television camera 10b which are fitted at proper place of the vehicle, and a 1st display device 20a which displays an image projected by the 1st television camera 10a and a 2nd display device 20b which displays an image projected by the 2nd television camera 10b are provided in front of a driver's seat; and the 1st display device 20a is arranged on the straight line connecting the driver 30 and the 1st television camera 10a and the 2nd display device 20b is arranged on the straight line connecting the driver 30 and 2nd television camera 10b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle display device, and more particularly to an electronic mirror using a television camera.

[0002]

2. Description of the Related Art Recently, a television camera is attached to a vehicle,
2. Description of the Related Art There is known a device in which an image around the vehicle such as a side or rear of the vehicle is displayed on a display device and the image around the vehicle is notified to a driver. For example, Japanese Unexamined Patent Publication No. 63-54699 is known, which is very effective in visual recognition and confirmation by showing the blind spot to the driver through an image.

Considering the reason why a blind spot is formed in an ordinary vehicle with reference to FIG. 3, as shown in FIG. 3, for example, a left door mirror 40a and a right door mirror 40b are provided.
In the case where the and are provided, the range in which the driver 30 can see the right side door mirror 40b and visually recognize the rear right side of the vehicle is a range indicated by α in FIG. 3, and this α is generally about 20 degrees.
Also, with the driver 30 facing normally, the driver 3
The range in which the right side of the vehicle can be visually recognized by the 0 eye is the range indicated by β in FIG. 3, and this β is generally about 120 degrees. Therefore, the range other than α and β on the right side of the vehicle becomes a range invisible to the driver 30, and the shaded portion γ in FIG. 3 becomes a blind spot.

Therefore, as shown in FIG. 3, the first television camera 10a is attached to the left end of the vehicle, and the second television camera 10b is attached to the right end of the vehicle.
By arranging the light receiving surfaces of the second television cameras 10a and 10b toward the rear of the vehicle so that the light receiving range is about 60 degrees, the first television camera 10a provided in the vehicle is The first display device 20a that displays the projected image and the second display device 20b that displays the image projected by the second television camera 10b each also display a blind spot.

Further, as shown in FIG. 4, a first television camera 11a and a second television camera 11b are mounted adjacent to each other at the front end of the center of the vehicle, and the first and second television cameras 11a and 11a are By arranging the respective light receiving surfaces of 11b toward the left and right of the vehicle so that the light receiving range is about 20 degrees, the first television camera 11a provided in the vehicle displays the image projected by the first television camera 11a. Second display device 21a
Second which displays the image projected by the TV camera 11b of
The display device 21b can display a left road and a right road in front of the vehicle, for example, as shown by the hatched portion in FIG.

[0006]

However, in this case, as shown in FIG. 3, the display devices 20a and 20a are provided.
When b is attached to any position in the vehicle, the display device 2
The video information displayed on 0a and 20b gives the illusion that the width of the vehicle is the same width as the mounting interval of the display devices 20a and 20b. This is because the driver 30 generally feels the width of the vehicle by looking at a part of the vehicle and the mirror, and when looking at the display devices 20a and 20b instead of the mirror,
As shown in FIG. 3, the driver 30 (A) and the display device 2
A straight line AD connecting 0a, a straight line AC connecting the driver 30 (A) and the display device 20b, and a straight line DC (width 1) at which the front end portion of the vehicle intersects are illusion of the vehicle width L.

When the driver looks ahead through the windshield of the vehicle, he or she sees the actual vehicle width L, and the driver alternately sees the actual vehicle width L and the illusionary vehicle width l. It will be. As a result, the driving car becomes confused in the head. Further, when such a display device is used during high speed traveling of the vehicle, the inside of the head of such a driving vehicle may become more and more confused.

Further, as shown in FIG. 4, the display device 2
When 1a and 21b are attached to arbitrary positions in the vehicle, the video information displayed on the display devices 21a and 21b does not have the driver's line of sight in the direction of the television cameras 11a and 11b, and therefore the television cameras 11a and 11b. Since mirror image inversion that is bent about 90 degrees to the left and right is not performed, there is a problem that the sense of seeing a curved mirror does not match and the visual sense becomes unnatural. Therefore, the present invention has been made in view of the above problems, and in a vehicle display device using a television camera and a display device for displaying an image projected by the television camera, it is as if an optical mirror is seen. It is an object of the present invention to provide a vehicular display device that provides a sensation.

[0009]

A structural feature of the present invention is that a vehicular display device is provided with a television camera mounted on a vehicle and a display device for displaying an image displayed on the television camera in the vehicle. In, the television camera comprises a first television camera and a second television camera, which are oriented in a predetermined direction and are attached to the vehicle at appropriate positions,
The display device includes a first display device that displays a video image captured by the first television camera and a second display device that displays a video image captured by the second television camera. The display device is arranged in a vehicle on a straight line connecting the driver and the first TV camera, and the second display device is arranged in a vehicle on a straight line connecting the driver and the second TV camera. It has been placed in.

[0010]

In the present invention configured as described above, when the television camera and the display device are used as side mirrors, the first display device for displaying the image captured by the first television camera is provided. A second display device for displaying an image captured by the second television camera, the driver and the first display device.
Since they are arranged on the straight line connecting the TV camera and the straight line connecting the driver and the second TV camera,
Since the vehicle width that the driver feels when looking forward through the windshield of the vehicle and the vehicle width when looking at the display device match,
Eliminate the risk of confusion in the head of a driving car. Also,
Even when such a display device is used when the vehicle is traveling at high speed, there is no possibility of causing confusion in the head of the driver's vehicle, so that the driver can drive comfortably.

When the television camera and the display device are used as a safety confirmation device, the first and second display devices are arranged on the straight line between the driver and the first and second television cameras. Therefore, the driver's line of sight is the first and second
Since it will be bent 90 degrees to the left and right by the TV camera, and the mirror image will be inverted in the horizontal direction, it is possible to check the condition of the left and right roads as if looking at a curved mirror.

[0012]

【Example】

First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows an overall configuration diagram of a first embodiment of the present invention.
In FIG. 1, a first television camera 10 a is attached to the front left side of the vehicle 10 with its light receiving surface facing the rear of the vehicle 10. Also, on the front right side of the vehicle 10,
The second television camera 10b is attached with its light receiving surface facing the rear part of the vehicle 10. There are no major restrictions on the mounting positions of the first and second television cameras 10a and 10b, but in order to project the blind spot in a large range, the front of the vehicle is preferable as much as possible. Further, when the television camera is used in the vehicle, the vehicle runs at a certain speed, and therefore the television camera displays a moving image on the display device. Therefore, if the light receiving angle of the light receiving surface of the TV camera is made too wide, the image displayed on the display device becomes difficult to see, and the light receiving angle of the light receiving surface of the TV camera is restricted, and the first and second TV cameras The light receiving angle of the light receiving surfaces of 10a and 10b is preferably about 60 degrees in relation to the blind spot.

An instrument panel (not shown) at the front of the driver's seat in the vehicle has a CRT and a liquid crystal display for displaying the images projected by the first and second television cameras 10a and 10b. Is attached to the display device. This display device is a first display device 2 that displays an image projected by the first television camera 10a.
0a and a second display device 20b for displaying the image projected by the second television camera 10b. The first display device 20a includes the eyes of the driver A in the driver's seat and the first television camera 10a. The second display device 20b is arranged in the straight instrument panel connecting the eyes of the driver A in the driver's seat and the second television camera 10b. ing.

In the first embodiment constructed as described above, the first display device 20 for displaying the image captured by the first television camera 10a mounted on the front left side of the vehicle.
a and a second display device 20 for displaying an image captured by a second TV camera 10b mounted on the right side of the front part of the vehicle.
b on a straight line connecting the driver A and the first TV camera 10a and between the driver A and the second TV camera 10b.
Since it is placed on each of the straight lines connecting
A straight line AB connecting the first display device 20a with an intersection B of the vehicle end, and a straight line AC connecting the driver A and the second display device 20b with an intersection C of the vehicle end. Straight line BC
Is equal to the actual vehicle width L. And driver A
Since the vehicle width L sensed when looking forward through the windshield of the vehicle and the vehicle width (straight line BC) sensed when looking at the display device match, there is no possibility of causing confusion in the head of the driving vehicle. Further, even when such a display device is used when the vehicle is traveling at high speed, there is no fear of causing confusion in the driver's head, so that the driver can drive comfortably.

Embodiment 2 In the above-mentioned first embodiment, an example in which the television camera and the display device are electronic side mirrors has been described.
The television camera and the display device can be applied to a visual recognition / confirmation device for knowing the situation of an intersection with poor visibility as shown in FIG. 2 (b). FIG. 2 (a) shows an example in which a television camera and a display device are applied to a visual confirmation / confirmation device for knowing the condition of an intersection with poor visibility, and in FIG. 1 TV camera 11
a is mounted with its light-receiving surface facing the left side of the vehicle 11. Similarly, in the center front part of the vehicle 11, the first
The second television camera 11b is mounted adjacent to the television camera 11a of FIG. 1 with its light receiving surface facing the right side of the vehicle 11. Here, as described in the first embodiment, if the light receiving angle of the light receiving surface of the television camera is made too wide, the image displayed on the display device becomes difficult to see, so the light receiving angle of the light receiving surface of the television camera. Is restricted, and it is appropriate that the light receiving angles of the light receiving surfaces of the first and second television cameras 11a and 11b are about 20 degrees.

An instrument panel (not shown) at the front of the driver's seat in the vehicle has a CRT and a liquid crystal display for displaying the images projected by the first and second television cameras 11a and 11b. Is attached to the display device. This display device is a first display device 21 for displaying an image projected by the first television camera 11a.
a and a second display device 21b for displaying a video image projected by the second television camera 11b. The first display device 21a includes the eyes of the driver A in the driver's seat and the first television camera 11a. The second display device 21b is arranged in the linear instrument panel connecting the eyes of the driver A in the driver's seat and the second TV camera 11b. ing. Where the first
Since the television camera 11a and the second television camera 11b are arranged adjacent to each other, the first display device 21a
And the second display device 21b are arranged adjacent to each other.

In the second embodiment constructed as described above, the first television camera 1 is provided at the center front part of the vehicle 11.
1a is attached with its light-receiving surface facing the left side of the vehicle 11, and a second television camera 11b adjacent to the first television camera 11a has its light-receiving surface on the vehicle 1 side.
1 is attached to the right side of FIG.
Even at an intersection with poor visibility as shown in (b), the fact that the vehicle is coming from the road on the right side can be known from the image of the second display device 21b, which is useful as a visual confirmation device. In addition, the first and second display devices 21
Since a and 21b are arranged on the straight line between the driver A and the first and second television cameras 11a and 11b,
The driver's line of sight is bent 90 degrees to the left and right by the first and second TV cameras 11a and 11b, and the mirror image is inverted in the horizontal direction. It has a special effect that you can confirm that you are struggling.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a first embodiment of the present invention.

FIG. 2 is a diagram showing a second embodiment of the present invention.

FIG. 3 is a diagram showing a conventional example.

FIG. 4 is a diagram showing a conventional example.

[Explanation of symbols]

10 ... Vehicle, 10a ... First TV camera, 10b ... Second TV camera, 20a ... First display device, 20b ...
Second display device, 30 ... Driver

Claims (1)

[Claims] 1. A vehicle display device comprising a television camera mounted on a vehicle, and a display device for displaying an image displayed on the television camera in a vehicle, wherein the television camera is oriented in a predetermined direction. The display device comprises a first television camera and a second television camera mounted at appropriate places on the vehicle, wherein the display device displays a video image captured by the first television camera, and the second television camera. A second display device for displaying a video image captured by the television camera, wherein the first display device is arranged in a vehicle on a straight line connecting the driver and the first television camera, The display device for a vehicle is arranged in a vehicle on a straight line connecting a driver and the second TV camera.