JP2000200047A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device which can accurately be directed toward a viewer by a simple device. SOLUTION: This display device is provided with a display screen 12 such as a CRT and liquid crystal for displaying as specified, a supporting part 14 which supports this display screen 12, a sensor device 20 like pyroelectric sensor for detecting a position of a person watching this display screen 12, and a driving device 16 to direct this display screen 12 toward the viewer by a signal from this sensor device 20. The sensor device 20 has sensing elements 22 which detect plural positions, respectively, and operates the driving device 16 corresponding to one sensing element 22 detecting a human being among the sensing elements 22, to direct the display screen 12 toward the detected person.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various display devices such as a personal computer display, a television, and a car navigation display.

[0002]

2. Description of the Related Art Conventionally, various displays have been provided so that their orientation and angle can be adjusted so that a viewer can easily see them. The adjustment of the orientation or the like is such that a viewer directly moves the display or rotates the display by a drive motor.

[0003]

In the above-mentioned conventional technology, the position of the viewer is not always constant, so that it is necessary to adjust the direction and angle of the display every time the position changes. Moreover, it is troublesome to adjust the angle each time, especially when a person is away from the display device, the adjustment is particularly troublesome.

[0004] The present invention has been made in view of the above-described conventional problems, and has as its object to provide a display device that can accurately turn a display in the direction in which a person looks at with a simple device.

[0005]

A display device according to the present invention detects a display screen such as a CRT or a liquid crystal for performing a predetermined display, a support portion supporting the display screen, and a position of a person viewing the display screen. A sensor device such as a pyroelectric sensor,
And a driving device for directing the display screen to a viewer in response to a signal from the sensor device. The sensor device has a sensor element that detects each of a plurality of positions, and operates the driving device corresponding to one sensor element that has detected a person among the sensor elements. This is for setting the display screen. Further, the sensor element includes a pyroelectric sensor.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a display device 10 according to one embodiment of the present invention. The display device 10 includes a display screen 12 for displaying an image such as a liquid crystal screen, a CRT, a plasma display, and an EL display, and a device main body 14 which also serves as a support for supporting the display screen 12.

A driving device 16 for rotating the display screen 12 is mounted in the apparatus main body 14. Drive unit 1
6 is a drive motor 1 such as a step motor or a servo motor.
7 and a drive circuit 18 for driving the drive motor 17, and changes the horizontal direction of the display screen 12.

Further, the display device 10 includes a sensor device 20 for detecting a position of a person watching the display screen 12. This sensor device 20 has a plurality of sensor elements 22 composed of pyroelectric sensors. The sensor element 22 has a pyroelectric sensor provided therein, an infrared lens disposed in each of the pyroelectric sensors, and is disposed so as to collect infrared rays in a predetermined direction on the surface of the pyroelectric sensor.

The output of the sensor device 20 is input to a control device 24, and the output of the control device 24 is input to the device body 14,
The direction of the person viewing the display screen 12 is determined. The determination method is
For example, a predetermined detection range is given to each of the plurality of sensor elements 22, and the position of the person is detected according to which sensor has detected the person.

The operation of the display device 10 according to the present embodiment is as follows.
And the control device 24 determines the position of the person 26. Then, a determination signal regarding the position of the viewer 26 is sent to the drive circuit 18, and the drive circuit 18 inputs a drive signal corresponding to the position of the viewer 26 to the drive motor 17. Then, the display screen 12 rotates so that the surface of the display screen 12 is perpendicular to the position of the viewer 26.

According to the display device 10 of this embodiment, the display screen 12 automatically turns so as to face the front of the viewer 26, so that even if the position of the viewer changes, the display screen 12 is always optimal for the viewer 26. The display screen 12 is directed to a suitable position.

Note that the display device of the present invention is not limited to the above embodiment, but can be used for an appropriate display device. As shown in FIG. It can also be used for adjustment. In this case, a sensor device such as a pyroelectric sensor
4 and four windows of the sensor element 22 may be formed on the front surface of the apparatus main body 14. Further, in addition to the left and right rotation, the display screen adjustment in the vertical direction may be automatically performed. In this case, two of the sensor elements 22 may be sensors for determining the left and right directions, and two may be sensors for determining the up and down directions. The vertical direction is the body 1
4 is automatically adjusted by a rotating mechanism 19 provided at one edge.

In addition, since the position of the driver is automatically detected and the direction of the display is adjusted on a television for a car or a display of a navigation system, the driving operation is not hindered and the driving operation is also contributed. In addition to the pyroelectric sensor, other infrared sensors and image sensors can be used as the sensor device.

[0014]

According to the display device of the present invention, the display screen automatically turns in the direction of the viewer, and the display screen always faces a more easily viewable position. There is no need to provide a more comfortable use environment.

[Brief description of the drawings]

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

FIG. 2 is a schematic block diagram of a display device according to an embodiment of the present invention.

FIG. 3 is a schematic perspective view of a display device according to another embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 display device 12 display screen 14 device main body 16 drive device unit 17 drive motor 20 sensor device 22 sensor element 24 control device

Claims (3)

[Claims] 1. A display screen for performing a predetermined display, a support for supporting the display screen, a sensor device for detecting a position of a person watching the display screen, and the display screen based on a signal from the sensor device. A display device comprising: a drive device for directing a viewer. 2. The sensor device according to claim 1, further comprising a sensor element for detecting a plurality of positions, and operating the driving device in response to one of the sensor elements that detects a person. The display device according to claim 1, wherein the display screen is set to a direction of a person. 3. The display device according to claim 1, wherein the sensor element comprises a pyroelectric sensor.