PROBLEM TO BE SOLVED: To provide an internal type filtration device provided in an aquarium in which suspended matter such as remaining bait or dust in the aquarium is prevented from being sucked in the filtration device out of an upper water intake for sucking the water in the filtration device, in order to filter non-purified water in the aquarium.SOLUTION: An upper water intake 2 for sucking the non-purified water in an aquarium V into a filtration case C is formed between a lower surface of an outer circumferential edge of a cover plate L and an upper edge 1a of an opening upper surface 1 of the filtration case C.COPYRIGHT: (C)2015,JPO&INPIT【目的】水槽内に設けられる内部式濾過装置であって、水槽内の未浄化水を濾過すべく、その水を濾過装置内に吸い込むための上部吸水口から、水槽内の残餌、塵埃などの浮遊物が濾過装置内に吸い込まれないようにした。【構成】蓋板Ｌの外周縁の下面と、濾過ケースＣの開口上面１の上縁１ａ間に、水槽Ｖ内の未浄化水を、濾過ケースＣ内に吸い込む上部吸水口２を形成した。【選択図】 図２
