PROBLEM TO BE SOLVED: To minimize the degree of projection of attachment plugs containing plug sockets by enabling building of a floor set foot warmer in such a manner that a device box containing the slug sockets will not stick out to the internal surface of a box body as much as possible while the device box is kept from disturbing the installation of the box body. SOLUTION: In the building of a floor set foot warmer, firstly, a projected upper rim 6 of a box body 5 is mounted on the periphery part of an opening 3 for the box body formed in a floor plate 2 of a room 1 and then, a power source cord 36 led out into the box body 5 from an opening 3 for a device box is connected to a connection terminal 35 of the device box 14. Then, the device box 14 is exposed outside through the opening 13 for the device box from inside the box body 5 to be mounted on the periphery part of the opening 13 for the device box. Then, attachment plugs 43 and 53 respectively connected to a lower heater 41 provided on a bottom wall 7 of the box body 5 and an upper heater 51 provided on the undersurface of an upper part of a frame 47 are plugged into plug sockets provided in the device box 14.
【課題】 機器ボックス１４が箱体５内面に可能な範囲 で突出しないようにして、且つ、箱体５を設置する際に は機器ボックス１４が邪魔とならないようにして掘ごた つの施工を行なう。
【解決手段】 機器ボックス１４を箱体５内から機器ボ ックス用開口１３を通じて外部に露出させて機器ボック ス１４を機器ボックス用開口１３の周縁部に取り付け る。