| 摘要 |
PURPOSE:To make a car washing by a hose easy, by providing a projection with guard at the upper end of a reflecting plate in a sound wave irradiating outlet of an ultrasonic wave oscillator of an ultrasonic wave transceiver for a car so as water risen along the reflecting plate descends with the projection. CONSTITUTION:A bracket 5 is fitted to the inside of a bumper 6 of a car and a parabola reflecting mirror 1 giving a prescribed directivity to an ultrasonic wave and a rubber-made arm 4 fitted with an ultrasonic wave oscillator 3 are fixed to the bracket 5. Further, an ultrasonic wave guide 2 is provided between the opening of the bumper 6 and that of the reflecting mirror 1, and parabola air gaps 7a, 7b are provided between the reflecting mirror 1 and the guide 2 with a prescribed interval. A projection 4a with a guard is provided at the upper end of the reflecting mirror 1 in the ultrasonic wave irradiating outlet of the oscillator 3 is provided. In washing the car with the hose or the like, the water risen along the reflecting mirror 1 is fallen down at the brimmed projection 4a so as to prevent detouring water from striking the oscillator 3. |
