JPH11268554A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device for displaying given visible information displayed by a single indicator, with the information divided into virtual and real image displaying regions, to improve visibility. SOLUTION: A display device 11 is equipped at the front of an automotive driver' seat, and is equipped with: an indicator 23 having virtual and real images respectively, a reflecting plate 27 for reflecting display light 25 from the display part 23b of the indicator 23 to emit the light 25 from a given virtual image display region facing a driver, and a screen member 17 provided on a dash board 12 and projected by the display content of the display part 23b of the indicator 23. The display part 23a of the indicator 23 displays the various instruments, etc., such as a vehicle speed, and the display part 23b displays various warning, and VICS information given from a car navigation device, or path guide information showing a advancing direction, etc. at a given spot in a route to a distination.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device provided around a driver's seat of a moving body.

[0002]

2. Description of the Related Art FIG. 5 is a diagram showing a conventional display device installed on an instrument panel in front of a driver's seat of an automobile. The display device includes a display 1 for displaying various kinds of visual information such as a vehicle speed, and a reflecting mirror 5 for reflecting display light 3 from the display 1 toward a driver. . In this display device, the display of the visual recognition information is entirely displayed in the display area 7 facing the driver on the front side, and the visual recognition information is displayed as a virtual image at a far viewpoint to reduce the burden of the driver's focus adjustment. Have been.

On the other hand, with the recent enhancement of functions of automobiles and on-vehicle devices, display information displayed on an instrument panel has increased, and the driver's visual recognition burden has increased.

[0004]

However, in the above-mentioned conventional display device, all visual information is displayed as a virtual image in a single display area 7, so that the display content is increased by increasing the display information. There is a problem that the density is increased and the visibility burden on the driver is increased, and the visibility is reduced.

[0005] In addition, the instrument panel section displays an instrument using a normal real image, and at the same time, projects visual information such as a vehicle speed on a combiner provided on a front window so that a reflected image by the combiner is visually recognized. In such a display device, two display devices, one for real image display and one for virtual image display, are used.
There is a problem that the size and cost of the device are increased.

In view of the above problems, the present invention can display predetermined visual information displayed by a single display device in a virtual image display area and a real image display area outside the virtual image display area. It is an object to provide a display device capable of improving visibility.

[0007]

A technical means for achieving the above object is a display device provided in a periphery of a driver's seat of a moving body, the display device being for displaying a virtual image for displaying predetermined visual recognition information. A display having a virtual image display unit and a real image display unit for displaying a real image, at least the real image display unit emitting display light for displaying the visual recognition information, and display control for controlling display contents of the display unit A display plate for displaying the visual recognition information from the virtual image display unit of the display unit, a reflecting plate that reflects the light and emits the reflected light from a predetermined virtual image display area facing a driver; and A screen member provided at a predetermined position facing the driver on the outside and projecting a display image formed by the display light emitted from the real image display unit of the display device. .

Preferably, the virtual image display area is provided on a front surface of an instrument panel in front of a driver's seat of the moving body, and the real image display area is provided above the virtual image display area. .

Preferably, the display device is a display device mounted on a vehicle, and is electrically connected to a car navigation device through the display control unit, and the display control unit is provided on a route to a destination. While the route guidance information provided from the car navigation device indicating the direction in which the car should travel at a predetermined point is displayed on the real image display section of the display, the car navigation device is used to input the destination. Input means, storage means for storing map information for deriving a route to the destination input from the input means, and from the input means based on the map information stored in the storage means. Deriving the route to the input destination and indicating the direction in which the vehicle should travel at a predetermined point on the route A navigation control unit that outputs the route guidance information to the display control unit; and, based on a predetermined criterion, determines whether a road in the traveling route is a high-frequency road, and If it is determined that the road, the instruction to reduce the brightness of the display of the route guidance information displayed by the real image display unit of the display from normal brightness to a predetermined low brightness state,
Alternatively, the display control unit may include a display state switching unit that gives an instruction to turn off the display of the route guidance information to the display control unit.

Further, preferably, the display state switching means stores the destination input from the input means and, if the same destination is input a plurality of times, stores the number of input times. Based on the storage contents of the destination storage unit and the map information stored in the storage unit, the vehicle position recognized by the navigation control unit is input from the input unit by a predetermined number of times or more. A road determining unit that determines whether or not the traveling road is a high-frequency road by determining whether or not the vehicle is in a surrounding area of the destination; When it is determined that the middle road is a road with a high traveling frequency, the instruction for lowering the display brightness of the route guidance information from a normal brightness to a predetermined low brightness state, or It may be provided with a display state instruction unit that gives the display control unit the instruction to erase the display of the route guidance information.

[0011]

FIG. 1 is a sectional view showing a structure of a display device according to an embodiment of the present invention. FIG. 2 is a view showing a state where the display device is mounted on an automobile. FIG. 2 is a block diagram showing an electrical configuration of the display device and a car navigation device connected to the display device. The display device 11 is installed in front of a driver's seat of an automobile, performs various instrument displays such as vehicle speed and various warning displays, and is electrically connected to a car navigation device 13 installed in a central portion of the dashboard 12 or the like. It is connected and displays route guidance information, VICS information, and the like provided from the car navigation device 13.

The display device 11 is incorporated in the front face of the driver's seat of the dashboard 12 to form an instrument panel. The display device main body 15 is located at any position on the upper surface of the dashboard 12, here the front face of the driver's seat. And a reversible screen member 17 installed in the camera.

A display 23 having a virtual image display portion 23a for displaying a virtual image and a real image display portion 23b for displaying a real image is provided in a casing 21 of the display device body 15, and a display device 23a for displaying the virtual image. A reflecting mirror (here, a concave mirror) 27 as a reflecting plate for reflecting the display light 25 in the driver direction;
An imaging lens system 29 for imaging the display image of the real image display section 23b of the display 23 on the projection surface 17a of the screen member 17
And are arranged. A translucent transparent cover 31 is provided on a portion of the casing 21 which is a front portion facing the driver's seat, which is a virtual image display area.

The display device 23 includes a liquid crystal display panel and various types of fluorescent display panels including a plurality of fluorescent display tubes forming display segments for displaying various types of visual information, which are arranged on a display surface. Can be used, but at least the real image display unit 23b has a function of projecting the display image on the screen member 17 by irradiating the display light 33 from the necessity of projecting the display content on the screen member 17. Needs to be Also, the virtual image display unit 23
a and the real image display portion 23b are formed such that their display surfaces face the same direction.

The display device 23 having the above-described structure is arranged such that a display surface of the display device 23 is directed obliquely upward and forward with respect to the forward direction of the vehicle, and a real image display portion 23b is provided on a bottom portion in the casing 21. It is arranged so as to be located above 23a.

The reflecting mirror 27 is a virtual image display unit 2 of the display 23.
The display light 25 from 3a is disposed at a position facing both the display 23 and the transparent cover 31 in the casing 21 so that the display light 25 is reflected toward the driver via the transparent cover 31. Further, here, since the reflection plate 27 is disposed so as to block the display light 33 from the real image display portion 23b of the display 23 to the screen member 17, the display light 33 is not blocked. A light transmitting part 27 for transmitting light is provided at the upper end of the reflecting mirror 27 located on the optical path 33.
a is provided. Here, the light transmitting portion 27 a is provided in the reflecting mirror 27, but the outer shape of the reflecting mirror 27 may be a shape that does not block the optical path of the display light 33.

The tiltable screen member 17 is a plate-shaped member having a front surface facing the driver as a projection surface 17a of white color or the like, and the tilting angle can be adjusted on the dashboard 12 in front of the driver's seat. It is erected in. Screen member 17
1 and 2, the display image of the real image display unit 23b of the display 23 is formed on the projection surface 17a of the screen member 17 by the imaging lens system 29. Is projected.
In addition, since the screen member 17 is foldable, when it is unnecessary, it can be laid down so as not to be in the way.

The dashboard 12 and the display device main body 2
In portions of the casing 21 located on the optical path of the display light 33, light-transmitting portions (here, holes) 12a and 21a are provided so as not to block the display light 33.

Display contents of the display units 23a and 23b of the display unit 23 are controlled by a display control unit 35 (see FIG. 3) based on external devices such as a vehicle speed sensor (not shown) and an external input from a car navigation device 13 to be described later. Control.

In the display device 11 configured as described above,
The display content of the virtual image display unit 23a of the display 23 is visually recognized by being reflected by the reflecting mirror 27, so that the display content of the virtual image display unit 23a is further deepened into the reflecting mirror 27 (far-viewpoint). ), The display contents of the real image display section 23b of the display 23 are projected on the screen member 17 located above the virtual image display area where the virtual image display is performed, and the real image is displayed. It has become.

The display contents of the display sections 23a and 23b of the display 23 may be various, but here, various instrument displays such as a vehicle speedometer, a fuel gauge and a water temperature gauge, and a turn signal indicator are virtual images. A virtual image is displayed on the display unit 23a, and various warning displays such as a battery indicator, a clock, VICS information provided from the car navigation device 13, route guidance information indicating a traveling direction, and the like are displayed on the real image display unit 23b. It has become.

On the other hand, as shown in FIG. 3, the car navigation device 13 includes a liquid crystal display monitor 41 arranged around the driver's seat separately from the display device 11, and a voice output unit 43 for providing route guidance and the like by voice. An optical disk device (storage means) 45 including an optical disk (CDROM) on which predetermined map information is recorded and an optical disk drive for reading map information from the optical disk; a navigation control unit (navigation control unit) for performing various processes required for navigation Means) 47, VIC receiving VICS information
An S information receiver 49; a GPS receiver 51 for receiving a GPS signal used for determining a current position of a vehicle transmitted from a predetermined artificial satellite; and a destination input unit for inputting a destination (Input means) 53 and a display state switching section (display state switching means) 55 for instructing switching of the display state of the route guidance information displayed on the real image display section 23b of the display device 23 of the display device 11. Have been. The voice output unit 43 performs route guidance and the like by voice under the control of the central information processing unit 67 of the navigation control unit 47.

The navigation control unit 47 uses the GPS navigation system with a small recognition error of the own vehicle position and the autonomous navigation system which is completely independent of the reception state of the radio signal, while also using various information such as the current position of the vehicle and the traveling route. A GPS control unit 61 that processes information, recognizes various information such as the current position of the vehicle based on information of a GPS signal given from a GPS receiver 51, and a vehicle speed pulse from a vehicle speed sensor (not shown). The autonomous navigation control unit 63 for recognizing the current position of the vehicle by tracing a map based on geomagnetic directions from a geomagnetic sensor (not shown) and a route to the destination input from the destination input unit 53 are transmitted to the optical disc device 45. A route search unit 65 for searching based on the stored map information; Control unit 61, by combining information from the autonomous navigation control unit 63 and the route search unit 65 recognizes the current position of the vehicle, together with the display on the monitor 41 a navigation image by image editing for route guidance,
The display device 1 generates route guidance information indicating a direction in which a car should travel at a predetermined point on a route to a destination, and the like.
And an information processing section 67 that outputs the information to the first display control section 35.

The route guidance information provided from the central information processing section 67 to the display control section 35 of the display device 11 indicates the traveling direction at the current point on the route to the destination and the traveling direction at each branch point. The information includes traveling direction information, direction change position information indicating a distance to a branch point requiring a turn such as a left turn or a right turn, and information indicating a distance to a destination.

When receiving the VICS information through the VICS information receiver 49, the central information processing section 67 displays the VICS information on the monitor 41 and outputs the VICS information to the display control section 35 of the display device 11. It is supposed to.

The display state switching unit 55 includes a destination input unit 53
A destination storage unit 71 for storing the destination input from the user and, when the same destination is input a plurality of times, the number of times of input, the storage contents of the destination storage unit 71 and the optical disk device 45 A road determination unit 73 that determines whether the traveling road is a road with a high frequency of travel based on the map information stored in the display control unit 35 of the display device 11 based on the determination result of the road determination unit 73. A display state instructing unit 75 for instructing an appropriate display state of the route guidance information.

The road determination section 73 determines that the current position recognized by the central information processing section 67 has been previously entered by the destination input section 53.
It is determined whether or not the user is within a surrounding area (for example, within a few kilometers of the destination or in a town where the destination is located) of the destination inputted more than a predetermined number of times (for example, five times). It is determined whether or not the traveling road is a road with a high traveling frequency.

When the road determining section 73 determines that the traveling road is a road with a low traveling frequency, the display state instructing section 75 converts the route guidance information given to the display device 11 into normal brightness. Display control section 35
On the other hand, if it is determined that the traveling road is a high-frequency road, the instruction to reduce the brightness of the display of the route guidance information from the normal brightness to a predetermined low brightness state Alternatively, an instruction to turn off the display of the route guidance information is given to the display control unit 35.

The road determination unit 73 determines whether the traveling road is an exclusive motorway such as an expressway based on the map information stored in the optical disk device 45 and the current position recognized by the central information processing unit 67. If it is determined that the vehicle is traveling between junctions of a motorway, the display state instructing unit 75 changes the brightness of the display of the route guidance information from the normal brightness to a predetermined low brightness. An instruction to lower the state or an instruction to turn off the display of the route guidance information is given to the display control unit 35.

The display control unit 35 of the display device 11 refers to the instruction given by the display state instructing unit 75, and displays the VICS information and route guidance information given by the central information processing unit 67 on the real image display unit 23b of the display unit 23. Is displayed. In the illustrated example of FIG. 2, traveling direction information indicating the current position on the route to the destination and the traveling direction at each branch point is displayed as route guidance information by an arrow display 81 indicating straight ahead, retreat, right turn, left turn, and the like. ing.

FIG. 4 is a flowchart showing the control of the display state of the route guidance information on the display 23 by the display device 11 and the car navigation device 13. Step S1
When the destination is input from the destination input unit 53, the process proceeds to step S2, where the autonomous navigation control unit 63 of the navigation control unit 47, the GPS control unit 61, and the central information processing unit 67
, The current position of the car is recognized, and a route from the current position to the destination is derived by the route search unit 65, and route guidance information indicating a current position on the derived route, a traveling direction at each junction, and the like. Is provided from the central information processing section 67 to the display control section 35 and is displayed on the real image display section 23b of the display device 23, and the process proceeds to step S3.

In step S 3, based on the current location recognized by the central information control section 67 and the contents stored in the destination storage section 71, the road determination section 73 determines whether or not the traveling road is a high-frequency road. It is determined whether or not the vehicle is traveling between the junctions of the motorway, as described above, and when it is determined that the running road is a high-frequency road, If it is determined that the vehicle is traveling between junctions,
Proceed to step S4, otherwise, step S4
Go to 5.

In step S4, an instruction to switch the display state of the route guidance information to a low brightness display or an instruction to turn off the display of the route guidance information is given from the display state instruction unit 75 to the display control unit 35. Is switched to low-luminance display, or the display of the route guidance information is turned off.

In step S5, an instruction to display the display state of the route guidance information at normal luminance is given from the display state instruction unit 75 to the display control unit 35, and the display unit 23 displays the route guidance information at normal luminance. Is performed.

The above steps S2 to S
By repeating the processing of step 5, the display state of the route guidance information on the display 23 is controlled. Note that other display contents such as VICS information other than the route guidance information displayed by the display device 23, a warning display, and an instrument display are displayed at normal luminance as necessary regardless of the display state of the route guidance information. You.

As described above, according to the present embodiment, the display contents of the virtual image display portion 23a of the display device 23 are reflected by the reflecting mirror 27 to constitute the instrument panel portion provided with the transparent cover 31. A virtual image is displayed on the front portion (virtual image display area) of the apparatus main body 15 and the display 2
3 is displayed on the screen member 17 (real image display area) provided on the dashboard 12 above the instrument panel, so that a real image is displayed. The visual recognition information to be displayed can be displayed separately in a virtual image display area and a real image display area, thereby reducing the visual recognition load and improving the visibility.

Further, since the virtual image display and the real image display are performed by the single display 23, it is necessary to provide two displays, a display for the virtual image display and a display for the real image display, as in the related art. Since there is no display device, the size and cost of the display device 11 can be reduced.

Further, when traveling on a high-frequency road where there is no need to display route guidance information such as an arrow display 81 indicating the traveling direction, or when traveling between junctions of a motorway, the route guidance information is automatically displayed. Is switched to a low-brightness state or the display of the route guidance information is turned off, so that the visual recognition load of the route guidance information is reduced,
The burden of visually recognizing the display content of the display device 11 when traveling on a road or the like where the traveling frequency is high can be reduced, and the visibility of the display content of the display device 11 can be improved.

[0039]

According to the first to fourth aspects of the present invention,
A screen member in which the display content of the virtual image display portion of the display is reflected by the reflector and displayed as a virtual image in a predetermined virtual image display region, and the display content of the real image display portion of the display is provided outside the virtual image display region And the real image is displayed, the visual information to be displayed can be divided into a virtual image display area and a screen member (real image display area) and displayed, thereby reducing the visual recognition load. And
The visibility can be improved.

Further, since the virtual image display and the real image display are performed by a single display, it is not necessary to provide two displays, a display for displaying a virtual image and a display for displaying a real image, as in the related art. Therefore, the size and cost of the display device can be reduced.

According to the third aspect of the present invention, while traveling on a high-frequency road where there is no need to display route guidance information,
Since the display state of the route guidance information is automatically switched to the low-brightness display or the display of the route guidance information is turned off, roads with high driving frequency can be reduced by reducing the visual recognition load of the route guidance information. It is possible to reduce the visual recognition load of the display device while traveling, and to improve the visibility of the display content of the display device.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of a display device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a state where the display device of FIG. 1 is mounted on an automobile.

FIG. 3 is a block diagram showing an electrical configuration of the display device of FIG. 1 and a car navigation device connected to the display device.

FIG. 4 is a flowchart showing control of a display state of route guidance information on a display device by the display device and the car navigation device of FIG. 3;

FIG. 5 is a diagram illustrating a configuration of a conventional display device.

[Explanation of symbols]

 Reference Signs List 11 display device 13 car navigation device 17 screen member 23 display device 23a virtual image display portion 23b real image display portion 27 reflecting mirror 35 display control portion 45 optical disk device 47 navigation control portion 53 destination input portion 55 display state switching portion 71 destination storage portion 73 Road determination unit 75 Display state instruction unit

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takanori Ito 1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi Harness Research Institute, Inc.

Claims (4)

[Claims] 1. A display device provided around a driver's seat of a moving object, comprising: a virtual image display unit for displaying a predetermined virtual image and a real image display unit for displaying a real image. At least the real image display unit emits display light for displaying the visual recognition information; a display control unit that controls display contents of the display unit; and the visual recognition information from the virtual image display unit of the display unit. A reflection plate for reflecting display light for display of the display from a predetermined virtual image display area facing the driver by reflecting the display light, provided at a predetermined position facing the driver outside the virtual image display area, And a screen member on which a display image formed by the display light emitted from the real image display section of the display is projected. 2. The virtual image display area is provided on a front surface of an instrument panel in front of a driver's seat of the moving body, and the real image display area is provided above the virtual image display area. The display device according to claim 1. 3. The display device is a display device mounted on a vehicle, and is electrically connected to a car navigation device through the display control unit, and the display control unit performs a predetermined operation on a route to a destination. Route guidance information provided from the car navigation device indicating a direction in which a car should travel at a point is displayed on the real image display section of the display, while the car navigation device has input means for inputting the destination. Storage means for storing map information for deriving a route to the destination input from the input means; and input from the input means based on the map information stored in the storage means. The route guidance information for deriving the route to the destination and indicating a direction in which the vehicle should travel at a predetermined point on the route. And a navigation control unit that outputs to the display control unit, based on a predetermined determination criterion, determines whether or not the road in the traveling route is a high-frequency road, and determines that the road is a high-frequency road. If determined, an instruction to reduce the display brightness of the route guidance information displayed by the real image display unit of the display from a normal brightness to a predetermined low brightness state, or the route guidance information 3. The display device according to claim 1, further comprising: a display state switching unit configured to give an instruction to turn off the display to the display control unit. 4. 4. A destination storage unit that stores the destination input from the input unit, and stores the number of inputs when the same destination is input a plurality of times. And the vehicle position recognized by the navigation control unit based on the storage content of the destination storage unit and the map information stored in the storage unit is input by the input unit at least a predetermined number of times. A road determining unit that determines whether or not the traveling road is a road with a high traveling frequency by determining whether or not the vehicle is in a surrounding area of the ground; If the road is determined to be a road with a high frequency of travel, the instruction for lowering the display brightness of the route guidance information from a normal brightness to a predetermined low brightness state, or the route guidance information The display device according to claim 3, further comprising: a display state instruction unit that gives the instruction to turn off the display to the display control unit.