| 摘要 |
The invention relates to an arrangement in signs of the kind which comprise a plurality of narrow, elongated prisms (10) arranged in side-by-side relationship and the side faces of which together form a plurality of sign surfaces in different rotational positions of the prisms (10). The prisms (10) are rotated by means of a drive shaft (26), common to all prisms, via a respective bevel gear drive (28, 30). In accordance with the invention, each driving gear wheel (28) of the bevel gear drive is journalled for rotation in a bearing (24) which is carried by an individual bearing support (14), which is guided for individual movement axially along tracks (18, 20) which extend longitudinally along the one frame side-member (12) of the sign, and which bearing supports (14) can be locked in selected positions along the tracks. |
