Water-proof electronic sound and light toothbrush

A water-proof, electronic sound and light tooth brush, comprising a handle and a brush head, wherein

• said handle is a hollow body formed from a light permeable material for receiving a sound and light control device, a tail end thereof being provided with internal threads for engaging a threaded portion projecting from a resonance box, said resonance box having a water-proof washer,
• said resonance box being substantially hollow, and having an outer periphery provided with a through hole adapted for sound guidance and water discharge, said resonance box having an elastic water-proof sound permeable film secured inside in the vicinity of said threaded portion;
• said sound and light control device including a battery adapted to provide electric power, and a contact switch for actuating a micro central processing unit, said contact switch including a metal sleeve having an opening and accommodating therein a movable metal ball, said opening of said metal sleeve facing a metal piece remote from said metal sleeve in a non-contact relationship, such that said metal sleeve and said metal piece respectively contact positive and negative terminals, said micro central processing unit being connected to a music integrated circuit and a speaker thereof, said speaker being provided near said elastic water-proof sound permeable film, said micro central processing unit being further connected to a large-size light emitting diode, and an array of small-sized light emitting diodes, such that said large-size LED is disposed in a hollow connecting portion between said handle and said brush head;
• and
• an inner periphery of said connecting portion of said brush head is formed into a light bending flange.