PROBLEM TO BE SOLVED: To provide a partial lid for a gap for filling a gap caused by a notch part provided in an existing lid of a water tank for a household aquarium by easily complementing the gap.SOLUTION: A partial lid for a gap including a lid surface thin plate part 1 having a rectangular water tank corner closing lid part and a U-shaped fixture 2 is created, and installed at an existing lid notch part of a water tank corner part in combination with the existing lid. Thus, a partial lid for a gap related to the invention can complement a notch part of the existing lid, and fill a substantially entire surface over the top surface of the water tank in combination with the existing lid. Also, a through hole and a small window part are provided at the lid surface thin plate part so that they can correspondingly be used for piping and feeding.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】家庭用観賞用水槽の既製蓋に設けられた切り欠き部分によってできる隙間を、平易に補って塞ぐ隙間用部分蓋を提供する。【解決手段】直角の水槽角閉蓋部を有する蓋面薄板部１と、コの字型固定具２を備えた、隙間用部分蓋を作成し、水槽角部の既製蓋切り欠き部分に、既製蓋と併用して設置する。これにより本発明隙間用部分蓋が、既製蓋の切り欠き部分を補い、既製蓋と併せて水槽上面を略全面に亘って塞ぐことができる。また蓋面薄板部に貫通孔や小窓部を設け、配管や給餌の用途にも対応できるようにする。【選択図】図１
