Patent ID: 8006634

Claim:
A whistle, comprising: a mouthpiece portion, inside which an air passageway is formed and in which an air opening is opened; and a body portion, in which a connected resonance chamber that is connected to the air passageway is formed, the body portion being inclined upwardly toward the mouthpiece portion and the mouthpiece portion being connected to a part of the body portion substantially in the center in a vertical direction, wherein the connected resonance chamber comprises a first resonance chamber, a second resonance chamber in which a sound-emitting opening is opened, and an orifice through which the first resonance chamber communicates with the second resonance chamber and wherein an axis of the body portion in a length direction is inclined upwardly toward the mouthpiece portion, and the angle of intersection of the axis of the body portion in the length direction and an axis of the mouthpiece portion in a length direction is 30° to 70°.