PROBLEM TO BE SOLVED: To reduce heat loss, as much as possible, at circulation of water, using a simple constitution for installing a water pipe of a member which is different from an aquarium, at a prescribed location on the inner wall surface of the aquarium in water.SOLUTION: The living fish aquarium device is obtained, by installing the aquarium 2 and a water-treating vessel for treating the water stored in the aquarium in a device body 7, and is constituted so that the water kept at a set temperature in the water-treating vessel is circulated to the aquarium. The water pipe 20 for circulating the water between the aquarium and the water-treating vessel is installed on the inner wall surface of the aquarium so as to be soaked in the water stored in the aquarium, and the cross-sectional shape of the water pipe is set so that the length in the upper and lower direction is larger than the length in the horizontal direction.COPYRIGHT: (C)2009,JPO&INPIT【課題】本発明は、水槽の壁内面で且つ水中内の所定位置に、水槽とは別部材の送水管を設けるという簡単な構成により、水の循環時の熱ロスを可及的に少なくすることを課題とする。【解決手段】活魚水槽装置は、水槽2と、該水槽内に貯留された水を処理する水処理槽とが装置本体7に設けられ、該水処理槽で設定水温に維持された水を、前記水槽に循環するように構成している。前記水槽と水処理槽との間を循環させる送水管20が、前記水槽の壁内面で且つ水槽に貯留された水に浸漬するように設けられ、前記送水管の断面形状は、上下方向の長さが水平方向の長さよりも長く設定されている。【選択図】 図1
