| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a height adjusting device capable of quickly adjusting the height of a projector and being simply operated, thus permitting a user to save his or her force. <P>SOLUTION: The height adjusting device used for adjusting the height of the projector comprises an adjusting leg, an air-pressure cylinder being connected to the projector and forming a sealed chamber with covering the adjusting leg, and a control button being mounted on the air-pressure cylinder and controlling the communication state of the gas chamber and outside air. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
