Display device and method for regulating viewing angle of display device

2:

• The display device according to claim 1, further comprising:
• a voice recognition device, provided with voice information prestored therein and configured for analyzing whether the voice information received by any one of the voice receiving devices matches the voice information prestored in the voice recognition device, and for transmitting an analysis result to the control device,
• wherein the control device controls the rotation device to operate or not according to the analysis result, and if the rotation device is to operate, the control device determines the location where the voice information is emitted according to the time difference and sends out the rotating instruction to control the rotation device to rotate the display main body.

3:

• The display device according to claim 1, wherein the control device comprises a storage unit for storing an optimal viewing angle range [ω+k, 180°−ω−k], in which the display main body is viewed from a location where the voice information is emitted, wherein ω has a certain numeric value according to different modes of the display device, and 0°≦k≦90°−ω.

4:

• The display device according to claim 3, wherein
• based on the location, determined by the control device, where the voice information is emitted, the control device calculates an angle θ between a connecting line, from a center point on a display surface of the display main body to the location where the voice information is emitted, and a line that passes the center point and extends in a horizontal direction on the display surface, and determines whether the angle θ falls within the optimal viewing angle range, and
• if the angle θ is not within the optimal viewing angle range, the control device controls the rotation device to rotate the display main body until the angle θ is rotated into the optimal viewing angle range.

6:

• The display device according to claim 1, wherein each of the voice receiving devices is arranged on the base, and the voice receiving devices are arranged in a same plane.

7:

• The display device according to claim 1, wherein a number of the voice receiving devices is three.

8:

• The display device according to claim 1, wherein each of the voice receiving devices comprises a microphone.

9:

• The display device according to claim 1, wherein the rotation device comprises a step motor.

10:

• The display device according to claim 1, wherein a rotation angle range, by which the rotation device rotates the display main body, is from 0° to 360°.

11:

• The display device according to claim 1, further comprising:
• a camera arranged on a frame of the display main body.

16:

• The display device according to claim 2, wherein the control device comprises a storage unit for storing an optimal viewing angle range [ω+k, 180°−ω−k], in which the display main body is viewed from a location where the voice information is emitted, wherein ω has a certain numeric value according to different modes of the display device, and 0°≦k≦90°−ω.

17:

• The display device according to claim 16, wherein
• based on the location, determined by the control device, where the voice information is emitted, the control device calculates an angle θ between a connecting line, from a center point on a display surface of the display main body to the location where the voice information is emitted, and a line that passes the center point and extends in a horizontal direction on the display surface, and determines whether the angle θ falls within the optimal viewing angle range, and
• if the angle θ is not within the optimal viewing angle range, the control device controls the rotation device to rotate the display main body until the angle θ is rotated into the optimal viewing angle range.

19:

• The display device according to any one of claim 2, wherein each of the voice receiving devices is arranged on the base, and the voice receiving devices are arranged in a same plane.

20:

• The display device according to any one of claim 3, wherein each of the voice receiving devices is arranged on the base, and the voice receiving devices are arranged in a same plane.