The invention discloses a full-band high-tone-quality thin
loudspeaker with a sound beam and sound tunnels. The
loudspeaker comprises a
voice coil and a vibrating diaphragm; the diaphragm is dish-shaped, the outer edge of the diaphragm is combined with the
loudspeaker outer frame, and the inner edge is combined with the upper end of the
voice coil; a
bridge type sound beam is erected on at least one side surface of the vibrating diaphragm, is annular and is positioned on the outer side of the upper end of the
voice coil; the surface of the vibrating diaphragm is provided with at least two grooves, and the grooves are arranged in a radial manner, and equally divide the surface of the vibrating diaphragm at the outer side of the
bridge type sound beam into a plurality of
resonance regions; each groove transversely penetrates through the
bridge type sound beam, and the length direction of the grooves is perpendicular to the bridge type sound beam; and the grooves are concavely arranged onthe surface of the vibrating diaphragm to form sound tunnels. According to the invention, the vibrating diaphragm is changed from the original free vibration mode to the current standard vibration mode, and the problems that the high-
pitch area of the loudspeaker cannot be lighted and the low-
pitch area is thick and round are solved from the angles of vibration,
resonance and
sound production. The practice proves that: the improved design scheme has outstanding substantive features and remarkable technical progress, and is suitable for popularization and application. and an obvious technicaleffect is achieved.