Patent ID: 7634177

Claim:
A heat isolation cover for a heat blower comprising: a casing having a receiving space; the casing being installed with a protection sleeve, a heat resistance unit and a fan and motor set; the protection sleeve being at a front end of the casing and having an approximate cylindrical shape; one end of the protection sleeve being formed as a converge opening portion and another end thereof having a tapered cylindrical body; the opening portion having an opening at a frontmost end thereof; a periphery of the cylindrical body being formed as a space for dissipating heat; a stepped surface being formed between the opening portion and the cylindrical body; the stepped surface being formed with a plurality of through holes; the heat resistance unit having an annular heat isolation unit and a heat emitting unit installed on the heat isolation unit; the front end of the heat resistance unit being combined to the casing; one end of the heat resistance unit resisting against an inner surface of the guide edge of the protection sleeve and another end thereof being combined to a buckling groove of the casing; the fan and motor set being installed to a rear end of the heat resistance unit; actuation of the fan and motor set being controlled by an electronic circuit; the fan and motor set generating wind to blow the heat resistance unit; then the wind flowing out from the opening of the opening portion; the airflow from the fan and motor set blowing to the cylindrical body of the protection sleeve and venting out from the through holes so as to reduce the surface temperature of the cylindrical body; and wherein an internal of the casing is formed with an annular embedded groove; a lower end of the protection sleeve is formed with a flange; the flange being engaged to the embedded groove of the casing.