JP3036072B2 - Display device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device that combines and displays a real image and a virtual image.

[Conventional technology]

2. Description of the Related Art Conventionally, as a display device that combines and displays a real image and a virtual image, there is one disclosed in, for example, Japanese Patent Application Laid-Open No. 60-205794. In the display device disclosed in the above publication, the main components include two displays, a first display and a second display, and a half mirror that transmits and reflects incident light. I have. Then, the first display and the second display are installed at an angle of about 120 °, and the angle formed between the first display and the half mirror, and the second display and the half mirror are connected to each other. A half mirror is arranged between the two displays so that the angles formed by the display and the display on the first display and the display on the second display are respectively transmitted and reflected using the half mirror, The real image and the virtual image are combined and can be visually recognized.

[Problems to be solved by the invention]

However, in the above-described conventional apparatus, two displays are required to combine and display a real image and a virtual image. For this reason, there is a problem that the cost of the apparatus increases because two expensive display devices are used as compared with other components. Further, since the main components are the first display, the second display, and the half mirror, the first display and the second display, the first display and the half mirror, In addition, the optical position adjustment of the second display and the half mirror is required three times in total, and it takes a lot of time for the adjustment, the positional relationship is shifted due to vibration after assembling the device, and Adjustment to match the brightness, color, etc. of the display device is required, which has led to an increase in the cost of the device.

The present invention has been made in view of the above problems, and has as its object to provide a display device that combines and displays a real image and a virtual image without increasing the cost of the device.

[Means for solving the problem]

Here, in the conventional device, an image having substantially the same size as the image displayed on each display could be visually recognized through the half mirror. By the way, when an image displayed on a single display is divided and viewed in the conventional apparatus, the size of the display portion of the display which was commercially available at that time was only about 6 inches. For example, when such a device is used for an automobile meter or the like, the image becomes too small and is difficult to be visually recognized by a driver. Recently, as a technical trend, a display having a large display portion has been developed due to an improvement in technical development of the display.

The present invention has been made under such a technical background, and in order to solve the above-mentioned object, a display part is on the same plane, a part of the display part performs a first display, and another part displays the first display. In one display for performing the second display, a transmission / reflection member having a transmission function and a reflection function is installed on the display, and the first display and the second display are realized by using the transmission / reflection member. A display device characterized by being composed so as to be visually recognizable by being combined with a virtual image at substantially the same depth is employed.

[Action]

According to the present invention, an image is displayed on one display having a display portion of the image on the same plane, and light incident on the transmission / reflection member from the display passes through the transmission / reflection member as transmitted light. Go straight ahead and see it as a real image.

On the other hand, light incident on the transmission / reflection member from the display is reflected by the transmission / reflection member, travels straight as reflected light in parallel with the transmitted light, and is visually recognized as a virtual image.

Therefore, a viewer of the image visually recognizes the image displayed on the display device by combining the real image and the virtual image to substantially the same depth.

〔Example〕

Hereinafter, the present invention will be specifically described using embodiments shown in the drawings.

FIG. 1 shows a sectional view of a first embodiment of the present invention. The dot matrix display 1 is a display source of an image, and is electrically connected to the control device 8 via a cable. The dot matrix display 1 displays an image by inputting an RGB video signal from the control device 8. The display portion of the image of the dot matrix display 1 is flat, and is fixed to the case 4 by using the brackets 5 and 6 so as to be inclined at about 45 ° with respect to the line of sight. The half mirror 2 is a transmission / reflection member that transmits and reflects incident light, and is fixed to the bracket 7. The bracket 7 is attached to the dot matrix display 1 such that the fixed half mirror 2 is arranged perpendicular to the dot matrix display 1 and on the center line of the dot matrix display 1.

In FIG. 1, when an RGB input signal is input from the control device 8 to the dot matrix display 1 and an image is displayed on the C portion corresponding to the upper half of the dot matrix display 1, the image is displayed on the C portion of the dot matrix display 1. The transmitted image passes through the half mirror 2,
The transmitted image (hereinafter referred to as “real image a”) is visually recognized. When an image is displayed on the D portion corresponding to the lower half of the dot matrix display 1, the image displayed on the D portion of the dot matrix display 1 is reflected using the reflection surface E of the half mirror 2 as a mirror, and the reflected image ( Hereinafter, this is referred to as “virtual image b”). Therefore, when an image is displayed on the entire dot matrix display 1, a viewer of the image sees the real image a and the virtual image b. That is,
The real image a and the virtual image b are combined at almost the same depth as shown in FIG. In FIG. 2, the real image a is drawn by a solid line, and the virtual image b is drawn by a dotted line. The symbol EP indicates human eyes.

Therefore, since the present embodiment has the above-described configuration and operation, the optical position adjustment of the display device only needs to adjust the dot matrix display 1 and the half mirror 2, and the optical position adjustment is performed three times as in the conventional device. Since no position adjustment is required, the adjustment does not take much time. In addition, since the display is only the dot matrix display 1, there is no need to make adjustments to match brightness, color, and the like, so that an increase in cost can be suppressed.

Note that the present invention is not limited to the above embodiment,
For example, the following modifications can be made without departing from the gist of the invention.

In the first embodiment, the half mirror 2 is installed on the center line of the dot matrix display 1 via the bracket, but the position of the half mirror 2 is maintained as long as it is perpendicular to the dot matrix display 1. Need not be at the center of the dot matrix display 1. Therefore, the installation position of the half mirror may be changed.

For example, as shown in FIG.
Is provided above the plane of the dot matrix display 1 to display a combined real image and virtual image as a virtual image b
The portion expands and the real image a portion becomes narrower, and only the lower portion of the displayed image is superimposed. FIG. 3 (b)
By placing the half mirror 2 below the plane of the dot matrix display 1 as shown in the figure, the superimposed display of the real image and the virtual image expands the real image a portion, narrows the virtual image b portion, and increases the Only the parts are superimposed.

Also in the present embodiment, if the half mirror 2 is arranged at a location 1/3 from the top of the dot matrix display 1 or at a location 1/3 from the bottom, the dot matrix display is 200 mm wide as in the second embodiment. Even if the height is 150 mm, a display of 200 mm in width and 100 mm in height becomes possible.

The following display is possible using the real image / virtual image configured as described above.

. By alternately displaying the real image / virtual image, the screen can be instantly rewritten.

. A moving image can be displayed by displaying a background as a virtual image and a moving image as a real image.

[Effect] As described above, the display device of the present invention displays an image on a single display on the same plane, and combines the display with a real image and a virtual image using a transmission / reflection member to substantially the same depth. Since the synthesizing means is used for visual recognition, the number of main components can be reduced, and the optical position of the device can be easily adjusted. An excellent effect that not only the cost of the apparatus can be prevented from being eliminated, but also complicated display information can be collectively displayed with good visibility can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention, FIG. 2 is a display explanatory diagram for explaining the operation of FIG. 1, and FIG.
(B) is an explanatory view of a modification of the first embodiment. 1 ... dot matrix display, 2 ... half mirror, 4 ... case, 5, 6, 7 ... bracket, 8 ... control device.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Norio Fujimori 1-1-1, Showa-cho, Kariya-shi, Aichi Japan Inside Denso Co., Ltd. 37735 (JP, U) Real opening 63-195930 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G09F 9/00

Claims (1)

(57) [Claims] 1. A transmissive / reflective member having a transmissive function and a reflective function in one display unit in which a display part is on the same plane, a part of which performs a first display and another part of which performs a second display. Is disposed on the display, and the first display and the second display are combined to have substantially the same depth as a real image and a virtual image using the transmission / reflection member, so that the display can be visually recognized. .