HEATED EXPANSION BODY HAVING HEATING MECHANISM, AND GAP SEALING DEVICE

摘要

PROBLEM TO BE SOLVED: To cut off smoke by forcibly expanding a heated expansion material with the heat of a heating resistor. SOLUTION: This heated expansion body having a heating mechanism and a gap sealing device each comprise the heated expansion material 3 having an expansible graphite and provided around the heating resistor 1. The heating resistor 1 is energized to produce the heat and expansion of the heated expansion material 3 which is expanded when detecting smoke. COPYRIGHT: (C)2003,JPO