PROBLEM TO BE SOLVED: To provide a Japanese-foot-warmer type heater improved in heat radiation and also with safety sufficiently taken into consideration by circulating warm water through a radiator having a simple structure. ;SOLUTION: A warm water foot warmer 1 comprises a box 3 serving as a radiator in a latticed wooden frame 2, wherein the box 3 has 2 flat cuboidal shape having inlet 4 and outlet 5 for warm water at the front and rear end surfaces thereof, respectively.;COPYRIGHT: (C)2001,JPO
展开▼