Patent ID: 7866619

Claim:
A monitor for vehicles, comprising: a base; a rotating shaft provided on the base and connected to a reversible motor, the rotating shaft having external threads on the outer surface thereof; a moving bar oriented in a direction perpendicular to the rotating shaft and having a screw hole through which the rotating shaft is inserted, wherein the moving bar is reciprocated along a longitudinal direction of the rotating shaft by forward/reverse rotation of the rotating shaft; a display panel pivotably coupled at a front end portion of the base by the moving bar; and a support arm pivotably connected at a first end thereof to the base and pivotably connected at a second end thereof to a side portion of the display panel, a length of the support arm being extendable, wherein the support arm comprises: a hollow housing extending from the first end of the support arm, with an air hole formed in the housing at a position adjacent to the first end of the support arm; a rod extending from the second end of the support arm, the rod being inserted into the housing and sealing the housing; a sealing member comprising a closing part provided in the housing and elastically supported by an end of the rod, the closing part sealing the air hole, and an extension part extending from the closing part, the extension part passing through the first end of the support arm in a direction perpendicular to a direction in which a first hinge pin passes through the first end of the support arm, so that an end of the extension part is interfered with or is stopped by the first hinge pin.