Duct cover for an image projection apparatus

摘要

An image projection apparatus includes: a grid portion provided on a housing of the apparatus and having a plurality of grids through which air flows in or out of the apparatus. The grid portion includes an edge portion of the grid portion, and a central portion of the grid portion, having a thickness thicker than a thickness of the edge portion of the grid portion.

主权项

1. An image projection apparatus comprising:
a housing; a removable ventilation cover, the ventilation cover having a grid portion provided on the housing of the apparatus, and including a plurality of grids through which air flows in or out of the apparatus, the grid portion including:
a solid rim portion having a sidewall of a first height and a first thickness in an air intake direction and having a plurality of first grids extending in two directions that are perpendicular to each other; anda central portion having a sidewall of a second height extending from an upper surface of the first grids, the central portion including a plurality of second grids extending in two directions that are perpendicular to each other, the central portion being surrounded by the rim portion and including a second thickness in the air intake direction, the second thickness being thicker than the first thickness of the rim portion of the grid portion, and the plurality of second grids in the central portion are thicker than the plurality of first grids in the rim portion in the air intake direction, wherein an area of only the central portion of the grid portion having the second thickness is set from one-fifth (⅕) to one-half (½) of the total area of the grid portion.