Patent ID: 8011788

Claim:
A cooling air guiding apparatus adapted for a projection apparatus, comprising: an air intake device, having: a body defining an inner air chamber, the body being provided with an opening disposed at a side of the body for communicating an exterior with the inner air chamber, and the body being provided with a mounting hole formed at a vertical sidewall of the body; and an adjustment device, having: an air-flow adjustment element extending from the mounting hole into the inner air chamber, and an air-flow adjustment hole being formed on the air-flow adjustment element; and an air-flow guiding element extending outwards from the mounting hole for guiding air in the air-flow adjustment element toward a specific direction; wherein the adjustment device is adapted to move relatively to the air intake device about a central axis of the body, such that the air-flow adjustment hole is adapted to move from a first position being substantially aligned with the opening, to a second position constituting a substantial displacement with respect to the opening.