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Image display device, electronic apparatus using the same, display output control method for image display device, and output control program thereof

  • US 9,244,546 B2
  • Filed: 06/20/2011
  • Issued: 01/26/2016
  • Est. Priority Date: 06/21/2010
  • Status: Active Grant
First Claim
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1. An image display device, comprising:

  • a display device main body which includes a display element for displaying prescribed image information to outside and a viewing angle changing element for setting to change outputted display of image information on the display element at least from a wide vision display to a narrow vision display based on a changing command from the outside, wherein;

    the display device main body is provided with an operation state detection element which detects an operation state of the viewing angle changing element based on an electric current flowing in the viewing angle changing element; and

    a fault judging module which compares an electric current value detected by the operation state detection element with an electric current value under a normal operation measured and stored in advance and, judges whether or not there is a fault generated in the viewing angle changing element based on a result of the comparison, whereinthe viewing angle changing element is provided with a narrow vision forcible setting module which operates when it is judged by the fault judging module that there is a fault, and forcibly sets the outputted display of the display element to a narrow vision display state, whereinthe narrow vision forcible setting module is formed by a forcible heating mechanism which heats the viewing angle changing element, and whereinwhen it is judged by the fault judging module that there is a fault generated in the viewing changing element, the electric current flowing in the viewing angle changing element is stopped and the forcible heating mechanism heats the viewing changing element, andwhen it is judged by the fault judging module that there is not a fault generated in the viewing changing element, the electric current flowing in the viewing angle changing elements is not stopped.

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