▎ 摘　　要

NOVELTY - The sounder has a heat generating element provided with heat generating units that are arranged in an array. A transmission rod is arranged between the heat generating units. Two ends of a thermo-acoustic sounding unit are connected to a handle rod, where the thermo-acoustic sounding unit is rotated along an axis that is connected to the handle rod. USE - Fan blade type array graphene sounder. ADVANTAGE - The sounder improves output sound pressure level of a sounder main body by forming groups of the sounders into the array and changes sound transmission direction of the sounders. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a fan blade type array graphene sounder.