Patent attributes
A projection apparatus includes a casing, a projection lens, a first fan, a second fan, and a heat sink assembly. The casing has an air inlet and an air outlet. The projection lens is disposed in the casing, and between the air inlet and the air outlet. The first fan is disposed in the casing, and between the projection lens and the air inlet. The second fan is disposed in the casing, and between the projection lens and the air outlet. The heat sink assembly is disposed in the casing and between the projection lens and the air inlet. The first fan has a first rotational speed, the second fan has a second rotational speed. The second rotational speed is larger than the first rotational speed. The projection apparatus has the advantages of low development cost and effectively lowering the influence of the heat on the image quality.
