To provide a structure capable of generating electric power by effectively using exhaust heat in use.
A thermoelectric module 1a of the structure for generating electric power by the Seebeck effect based on a temperature difference between both mutual side surfaces, is incorporated into an engaging groove 18 formed on an outer peripheral surface of a spacer 17 in a state of securing heat conductivity between the module and this spacer 17. This spacer 17 is sandwiched between an outer ring 13 of a rolling bearing 8 rising in the temperature in use and an inside surface of a housing 6 for a rolling bearing cooled by being always exposed to outside air in a state of securing the heat conductivity. Thus, the temperature difference is caused between both mutual side surfaces of the thermoelectric module 1a, and an electric current flows in the predetermined direction. Thus, the problem is solved.
Takashi Daejeon
Masaki Muto
Kinzo Koyama