To provide an upper section filtering device for upper section which can have lighting directly under the device, when it is arranged in an aquarium and prevents a lighting part from becoming high temperature.

The filtering device 100 of upper section includes a filter medium 103, a body case 101 for making water pass through the filter medium 103, a light-emitting diode 111 as a light source and a LED lighting base 109, arranged on the undersurface of the body case 101 so as to be able to conduct the heat generated, from the light-emitting diode 111 to the water in the body case 101.