COEN-SHAPED SPEAKER

摘要

PURPOSE: To effectively prevent an edge from becoming high temperature on the coen-shaped speaker with high heat resistance being usable at the high temperature atmosphere. ;CONSTITUTION: A circular edge 73 is arranged at the end of a truncated cone shape diaphragm 69 housed in a frame 61 whose end is opened and extending towards the end. In the corn-shaped speaker to which the edge 73 is fixed to the end of the frame 61, the edge 73 is covered by a thermal insulation cover 77 fixed to the frame 61. The edge 73 is arranged on the outer peripheral part at the back of the end of the diaphragm 69. The edge 73 is covered by the end part of the diaphragm 69.;COPYRIGHT: (C)1996,JPO