JPH10177149A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of displaying more display information at high visibility by the use of a single fluorescent display tube. SOLUTION: A front light emission type fluorescent display tube 20 capable of displaying images by light emission on both the faces is used as fluorescent display tube. Only a part of the display tube 20 is exposed from a dashboard 2 to allow a driver to directly recognize only a digital clock. On the other hand, 2nd display information such as horiziontally inverted speed meter is displayed by light emission on the rear face of the display tube and the display information is projected to a reflector 50 to allow the driver to recognize the reflected image as a virtual image.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for displaying an instrument, a warning, a facility, and the like used in an automobile, an aircraft, a ship, and the like.

[0002]

2. Description of the Related Art In recent years, as a display device of an automobile, a display device of a type in which display information displayed on a display panel such as a fluorescent display tube is projected on a reflecting mirror or a front window and the driver recognizes this as a virtual image is used. ing.

[0003] In this type of display device, display information on a display panel is displayed as a virtual image at a long distance, so that there is an advantage that a viewpoint can be easily adjusted particularly during driving of a car and visibility is excellent.

[0004]

By the way, in consideration of the manufacturing cost of an automobile, it is desirable to display as much display information as possible on one display device.

On the other hand, when a plurality of pieces of display information are collectively displayed in the same area, visibility deteriorates. For example, a digital clock and a digital mileage display are provided next to each other. If they are placed in
There is a risk of misunderstanding between them. Moreover, it may not be desirable from a design point of view.

Accordingly, the present invention has been made to solve the above-described problem, and provides a display device capable of displaying more display information with good visibility using a single display panel. The purpose is to:

[0007]

In order to solve the above-mentioned problems, a display device according to the present invention is a display device in which first and second display information can be viewed from the same direction, and a first display information is provided on a front surface. And a display panel for displaying the first and second display information, which is inverted left and right, on the rear surface thereof, and an area corresponding to the second display information on the front surface of the display panel. The first display information is displayed on the front surface of the display panel while covering the area corresponding to the first display information on the rear surface of the display panel, and the second display information is displayed on the rear surface of the display panel. The information is projected on a reflecting mirror provided on the back side of the display panel, and the second display information is displayed as a virtual image.

Further, another display device of the present invention comprises
A display device that allows second and third display information to be viewed from the same direction, wherein the first, second, and third display information are displayed on a front surface, and the left and right sides are inverted on the rear surface. A display panel that displays the first, second, and third display information, and covers an area corresponding to the second display information on the front surface of the display panel, and displays the first display information on the front surface. And displaying the third display information, and covering the area corresponding to the first display area on the back surface of the display panel, and inverting the area on the back surface of the second side.
And displaying the third and the third display information as virtual images by projecting the display information onto a reflecting mirror provided on the back side of the display panel. .

It is to be noted that a front emission type fluorescent display tube can be used as the display panel.

When the display device is used as a vehicle-mounted display device, the second display information indicates the running state of the vehicle, and the first display information indicates information other than the running state of the vehicle. Good.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a display device according to an embodiment of the present invention will be described.

As shown in FIGS. 1 and 2, this display device is used as a display device of an automobile, and is installed on a dashboard 2 in front of a driver's seat.

That is, the dashboard 2 is provided with a display window 6 on the front side surface of the board main body 4 and a digital clock 30 as first display information is displayed thereon,
A panel hood 8 with a cover glass 9 is formed above the display window 6 and a speedometer 32 as the second display information is provided there.
The fuel gauge 34 and the like are configured to be displayed as virtual images.

More specifically, a front emission type fluorescent display tube 20 (hereinafter abbreviated as FLVFD) as a display panel is mounted on the back side of the display window 6 inside the board 4.

The FLVFD 20 transmits light emitted from the phosphor to both sides of the panel using a glass substrate or a thin film anode wiring, and displays information obtained by the phosphor on the front surface of the panel. In addition to the light-emitting display, the left and right inverted display information is displayed on the back of the display.

In the FLVFD 20 used in the vehicle, as shown in FIG. 3, information indicating the running state of the vehicle, ie, the speedometer 3 is displayed in the display frame 22 as first display information.
2, a fuel gauge 34, a warning display 35 of running out of fuel, a water temperature gauge 36 of the engine coolant, a warning display 37 of the water temperature, a warning display 38 of a parking brake operation, a lighting display 40 of an upper beam, a lighting display 42 of a turn signal, While the odometer 44 is displayed, information other than the information indicating the running state of the vehicle, that is, the digital clock 30 is displayed as the second display information in a substantially central lower portion of the display frame 22.

When this FLVFD 20 is viewed from the back side,
As shown in FIG. 4, the first display information and the second display information are displayed left and right inverted. Here, FLVFD2
In the area corresponding to the digital clock 30 on the back, a shielding film 3 is provided.
1 is formed so that the digital display 30 is not displayed on the back surface.

The FLVFD 20 is mounted inside the board main body 4 so that the digital clock 30 on the surface thereof is exposed from the display window 6, and other second display information is covered by the board main body 4. The person can directly see only the digital clock 30.

The FLVFD 20 inside the board body 4
A reflection mirror 50 is provided on the back side of the device. The reflection mirror 50 is mounted in such a position and posture that the rear surface of the FLVFD 20 is reflected when the driver looks at the reflection mirror 50 by moving his / her viewpoint into the panel hood 8.
When the second display information, which is displayed on the back side of the display panel, is displayed on the reflecting mirror 50, the driver recognizes this as a virtual image. That is, the driver who sees the reflecting mirror 50 through the panel hood 8 can use the FLVFD2 having the reflecting mirror 50 as a plane of symmetry.
The second display information is recognized as a virtual image at the symmetric position B of the 0 installation position A. At this time, the left and right inverted second display information displayed on the back of the FLVFD 20 is further horizontally inverted by the reflecting mirror 50, so that the driver recognizes the second display information as a normal image without left and right inversion. be able to.

According to the display device configured as described above, the digital clock 30 displayed on the FLVFD 20 is directly displayed in the display window 6 of the dashboard 2, and the second display information such as another speedometer is displayed. Is displayed as a virtual image through the cover glass 9 via the reflecting mirror 50, so that the digital clock 30 and the second display information displayed on the single FLVFD 20 can be displayed at different positions, respectively. Are not confused and recognized, and are excellent in visibility. Also, the design is improved. Therefore, even when a large amount of display information is displayed on a single FLVFD 20, the display can be displayed with good visibility, and as a result, the number of display devices installed in the vehicle can be reduced.

In order to ensure the visibility of each display information, it is conceivable to provide a margin in the arrangement of the display information on the display panel. In this case, FLVFD is used.
It is necessary to use a large one for 20. However, in this embodiment, without increasing the size of the FLVFD 20 in particular,
The effect that the visibility can be improved can be obtained.

Further, the first and second display information, which should have been displayed on separate display devices in the past, are combined into one FLVFD2.
By efficiently arranging the FLVFDs at 0, the total area of the FLVFD 20, whose price is affected by the area, can be reduced, and the number of components such as drive circuits required for separate display devices can be reduced. Cost is reduced.

In the above-described embodiment, the first display information is a digital clock, and the second display information is a speedometer 3
2, the fuel gauge 34, etc., but are not limited to these, and may be changed as appropriate according to the situation or design in which the display device is used.

The warning display for seat belt wearing or running out of fuel may be displayed on the front side of the display panel, that is, on the dashboard side, as third display information.

However, as in the above-described embodiment, if the remaining fuel amount and the water temperature, particularly the speedometer and the like, which are necessary information during normal operation, are displayed as the second display information to be displayed as a virtual image, the operation can be performed. This is effective in that the user can confirm the information without drastically changing the focus during traveling.

Further, in this embodiment, the FLVFD 20 is used as the display panel. However, a display panel capable of obtaining display information from both sides, for example, a liquid crystal display, an electrochromic display, a plasma display, or the like may be used.

[0027]

As described above, according to the display device of the present invention, the first and second display information are displayed on the front surface, and the first and second display information inverted left and right are displayed on the rear surface. A display panel, and a second
Cover the area corresponding to the display information of
Is displayed, and an area corresponding to the first display information on the back of the display panel is obscured, and the second display information inverted left and right is displayed on the back, and the display information is displayed on the back side of the display panel. Projection on the provided mirror
Is displayed as a virtual image, so that the first display information and the second display information displayed on a single display panel are displayed at separate positions, respectively. More information can be displayed with good visibility on the panel.

According to another display device of the present invention,
In addition to the same effects as in the above case, it is possible to display the third display information on the front surface of the display panel and to display the third display information as a virtual image.

When the display device is used as an in-vehicle display device, information other than the running state of the vehicle is displayed on the first display unit which directly displays information, and the running state of the vehicle is displayed on the second display unit. By displaying the information, information normally required during traveling can be obtained as a virtual image that can be easily recognized during traveling.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a display device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the display device of the above.

FIG. 3 is a front view showing a front emission fluorescent display tube of the display device of the above.

FIG. 4 is a rear view showing the top emission type fluorescent display tube of the above.

[Explanation of symbols]

 Reference Signs List 20 front-emitting fluorescent display tube 30 digital clock 31 shielding film 32 speedometer 34 fuel gauge 36 water temperature gauge 50 reflecting mirror B virtual image

Claims (4)

[Claims] 1. A display device which allows first and second display information to be viewed from the same direction, wherein the first and second display information are displayed on a front surface and the left and right sides are inverted on a rear surface thereof. A display panel for displaying the first and second display information, wherein a region corresponding to the second display information on the front surface of the display panel is covered and the first display information is displayed on the front surface; An area corresponding to the first display information on the rear surface of the display panel is covered and the second display information is displayed on the rear surface of the display panel, and the display information is reflected on a rear surface of the display panel. A display device, wherein the second display information is projected as a virtual image on a mirror. 2. A display device for making first, second and third display information visible from the same direction, wherein said first, second and third display information are displayed on a front surface. A display panel for displaying the first, second, and third display information inverted on the left and right sides thereof, and covering an area corresponding to the second display information on the front surface of the display panel. The first display information and the third display information are displayed on the front surface, and the second and third inverted right and left sides of the rear surface of the rear surface of the display panel are covered by covering an area corresponding to the first display area. Wherein the display information is displayed on the display panel, and the display information is projected on a reflecting mirror provided on the back side of the display panel to display the second and third display information as virtual images. 3. The display device according to claim 1, wherein a front emission type fluorescent display tube is used as the display panel. 4. The vehicle according to claim 1, wherein the second display information indicates a running state of the vehicle, and the first display information indicates a running state of the vehicle. A display device for displaying information other than a running state.