| 摘要 |
PROBLEM TO BE SOLVED: To make possible for anybody having a different point of sight in height to easily watch the display of an information display device attached to various devices including electric appliances. SOLUTION: A user X stands in front of the door 2 of a refrigerator main body 1. A distance from a camera 4 to the user X is set to be L1, and a photographing angle by the camera 4 is set to beθ. The photographing angle is set so that the center of user's eyes is positioned at the center of the image photographed by the camera 4. The height of use's eye is calculated by the distance L1 and the angleα. Provided that the height H is positioned downward by L2 from the camera in the vertical direction, the distance L2 is obtained by calculating an equation, L2=L1cosθ. The moving distance of the image display device is calculated by calculating a difference between H and the height of the center of the image display device in the vertical direction on an image display device mounting member 5 at the time.
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