| 摘要 |
<p>A portable overhead projector (10) having a folding arm (14). The arm and a torque member (40) are pivotally attached to the projector head (16), forming a four bar linkage (26,14,40,28). When the arm is moved from an upright, operative position to a storage, the projector head rotates so as to be flush with the base (12) of the projector, making the projector more compact for storage. An adjustment mechanism (46,48,50,52,54) is also provided to automatically open and close a mirror (32) which is attached to the projector head, simplifying the set up procedure of the overhead projector. <IMAGE></p> |
