| 摘要 |
PROBLEM TO BE SOLVED: To surely prevent the pickup of dust, dirt, etc., to a recording surface of a disk by simple constitution. SOLUTION: Both ends of a guiding shaft 16 formed by a metallic hollow member of an elliptic shape in section are fixed to a pickup frame. The guiding shaft 16 is disposed in such a manner that the air current generated by respective fins formed at a turnable flows into the guiding shaft 16 from an inflow port 20 at the front end of a trumpet-shaped member 19 joined at its front end. A plurality of blast ports 22 are formed atop the guiding shaft 16 and the air current flowing into the guiding shaft 16 through the inflow port 20 is delivered toward the recording surface of the disk through the respective blast ports 22. |
