| 摘要 |
PURPOSE:To improve decoration or advertisement effect by arranging display portions such as characters, symbols, or patterns in a rotating body such as a wheel cover for automobile and forming those portions in such a way that they look like standing still or moving slightly owing to an afterimage phenomenon of the eyes even when the rotating body is in rotation. CONSTITUTION:In case that the captioned device is effected in a wheel cover 1, a character display portion 2 for ''ABC'' is arranged on its surface side. This display portion 2 is arranged after being subjected to predetermined reflecting surface processing applied to the wheel cover 1 made of synthetic resin material which is colored in a color with low reflection. Namely, the display portion 2 is formed in such a way that a reflecting surface 3 which extends in the fixed direction (lateral direction on this paper) and a non-reflecting contact surface 4 are arranged one after another in the form of waves, the reflecting surface 3 is subjected to metal plating. Further, each reflecting surface 3 is parallel with each other and it is formed in a curved surface which curves concavely in the form of an arc along a downward direction drom a reference surface 8. And when a sight angle of a person who sees the display portion 2 is set to beta, it is arranged in such a way that the display portion 2 can be recognized when a reflecting angle of a reflecting light R from each reflecting surface 3 agrees with beta.
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