Patent ID: 8163055

Claim:
A filter housing structure, adapted to a projector, the projector having a casing, the casing having a plurality of openings, the filter housing structure comprising: a first encircled hook-and-loop fastening layer, fixed on the casing and surrounding the openings of the casing; a housing, comprising a central portion and a boundary portion, wherein the central portion has a plurality of through holes corresponding to the openings of the casing and the boundary portion surrounds the central portion and corresponds to the first encircled hook-and-loop fastening layer, and wherein the housing has a positioning structure disposed at a margin of the central portion and the positioning structure corresponds to a side of one of the openings of the casing for positioning the housing; a filtering layer, disposed in the central portion, disposed between the through holes and the openings of the casing, and shielding the through holes; and a second encircled hook-and-loop fastening layer, fixed on the boundary portion for fastening the housing to the first encircled hook-and-loop fastening layer.