Patent ID: 7057972

Claim:
A flasher type fish sonar comprising: a case, a circuit board mounted in the case, a motor attached to the circuit board, the motor including a rotary shaft, a light conducting disk fixed to the rotary shaft of the motor, the light conducting disk including a projecting portion for mounting the light conducting disk, a luminous portion and a light conducting portion for conducting light to the luminous portion, a shadow disk fixed to the luminous portion of the light conducting disk, the shadow disk including a slit through which light is adapted to pass from the luminous portion of the light conducting disk, a front display provided at a front of the shadow disk, a luminous element connected with the circuit board opposite to the light conducting portion of the light conducting disk which conducts light to the luminous portion, a fish sonar circuit for inputting signals of a surface of a body of water, fish in the body of water and a bottom of the body of water, and a piezoelectric vibrator connected to the fish sonar.