NOVELTY - The module (1) has a heat sink (11) e.g. extruded aluminum heat sink and die-casting aluminum heat sink, whose heat-receiving portion (111) is located at a side. A heat-radiating portion (112) of the sink is located at another side opposite to the heat-receiving portion. A hot side (121) of a cooling module (12) is in contact with the heat-receiving portion of the sink. A cold side (122) of the cooling module is in contact with a solar inverter (2). A thermal insulator (13) i.e. thermal insulating sponge, is provided between the heat-receiving portion, the cooling module and the inverter.    USE - Thermal module for use with a solar inverter of a solar power generation device.    ADVANTAGE - The module provides the thermal insulator between the heat-receiving portion of the sink, the cooling module and the inverter by providing the cooling module between the sink and the inverter, so that the inverter can have largely upgraded heat dissipation performance and service life of the inverter is extended. The cold side of the cooling module in contact with a heat-producing source functions to lower the temperature of the heat-producing source when the inverter operates and brings the heat-producing source to produce heat. The module absorbs the heat by the cold side transferred to the hot side of the cooling module before transferred to the sink via the raised area on the heat-receiving portion of the sink, so that the heat is transferred to the heat-radiating portion of the sink and dissipated into ambient air from radiating fins on the heat-radiating portion, thus preventing the heat from transferring from the sink back to the inverter by the thermal insulator.    DESCRIPTION OF DRAWING(S) - The drawing shows an exploded perspective view of a thermal module.    Thermal module (1)    Solar inverter (2)    Heat sink (11)    Cooling module (12)    Thermal insulator (13)    Heat-receiving portion (111)    Heat-radiating portion (112)    Hot side (121)    Cold side (122)