Abstract: An ultrasonic transducer device for a humidifier, the humidifier having a vaporizing chamber for producing water vapor or mist, the ultrasonic transducer device comprises: a transducer holder having a central opening formed in a longitudinal direction of the transducer holder and a flange portion disposed at a periphery of the transducer holder, the transducer formed of synthetic resin or plastic materials; an ultrasonic transducer disposed at the central opening of the transducer holder; a support member formed of metal and having an upper planar section and a side section extending vertically from the upper planar section, the upper planar section defining an opening therein for coupling with the flange portion of the transducer holder; and a heat discharge plate having heat discharging fins and coupled with the support member, the heat discharge plate coupled with a circuit board for discharging heat in the circuit board.

Abstract: A water supply device for a humidifier having a water tank for retaining water and a vaporizing chamber for producing water vapor with the water supplied from the water tank, is disclosed in which the water supply device comprises a water tube for supplying the water from the water tank to the vaporizing chamber of the humidifier, the water tube formed of synthetic resin or glass material, and a heating coil disposed around the water tube connected to a electric source for heating the water to a predetermined degree. The water supply device preferably further includes an insulation material wound around the water tube and the heating coil, and a connecting elbow member for securely connecting each end of the water tube to the water chamber and the water tank, respectively.