PROBLEM TO BE SOLVED: To provide a filter incorporating therein an insect screen so as to be detachable and ensure the prevention of passing of insects.SOLUTION: An insect screen 3 closing an opening 2b on a rear surface of a frame material 2 into which a peripheral edge portion 1a of a filter material 1 is fitted is provided so that a frame 3a in a peripheral edge of the insect screen 3 is opposite to an inner side surface of a peripheral edge portion of the opening 2b on the rear surface of the frame material 2 across a gasket 5 over an entire periphery, and a pressing mechanism 4 detachably attached to an opening 2a on a front surface of the frame material 2 presses the frame 3a of the insect screen 3 against the gasket 5 via the filter material 1. With this configuration, it is possible to prevent a gap from being generated between the frame 3a of the insect screen 3 and the gasket 5 and ensure the prevention of passing of insects, and to detachably incorporate the filter material 1 and the insect screen 3 into the frame material 2.COPYRIGHT: (C)2016,JPO&INPIT【課題】着脱可能でかつ虫の通過を確実に防止できるように防虫網を組み込んだフィルタを提供する。【解決手段】濾材1の周縁部1aが嵌め込まれる枠材2の後面の開口2bを塞ぐ防虫網3を、その周縁のフレーム3aが全周にわたって枠材2の後面の開口2bの周縁部の内側面とガスケット5を挟んで対向するように配し、枠材2の前面の開口2aの周縁部に着脱可能に取り付けた押付機構4で、濾材1を介して防虫網3のフレーム3aをガスケット5に押し付けることにより、防虫網3のフレーム3aとガスケット5との間に隙間が生じないようにして虫の通過を確実に防止するとともに、濾材1や防虫網3を着脱可能に枠材2に組み込めるようにした。【選択図】図2
