PROBLEM TO BE SOLVED: To provide an air filter device capable of performing easily removal or replacement of a mothproof sheet.SOLUTION: An air filter device 100 includes a filter frame 1 having an air inflow port 1a and an air outflow port 1b, for storing a filter media 4 inside, a mothproof sheet 3 arranged on the air outflow port 1b of the filter frame 1, and a fitting frame 2 fitted to the circumference of the air outflow port 1b of the filter frame 1, in which a peripheral edge part 30 of the mothproof sheet 3 is held between the filter frame 1 and the fitting frame 2.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】防虫シートの取り外しや交換を容易に行うことができるエアフィルタ装置を提供する。【解決手段】エアフィルタ装置100は、空気流入口1aおよび空気流出口1bを有し、内部にろ材4を収容したフィルタ枠1と、フィルタ枠1の空気流出口1bに配置した防虫シート3と、フィルタ枠1の空気流出口12周縁に嵌め込まれた嵌め込み枠2とを備え、防虫シート3の周縁部30をフィルタ枠1と嵌め込み枠2との間で保持している。【選択図】図1
