| 摘要 |
PROBLEM TO BE SOLVED: To provide a glass door and a window which have an electric network arranged on window glass instead of a surface lattice, so that a resident or rescuer breaks the glass of the widow at emergency, to take refuge or rescue activities and also generate an alarm, if a 3rd person breaks the glass. SOLUTION: This glass, used for an opening part of a building such as a house and a network made of a conductive substance, is disposed on the width- directional surface of a glass G2 at internals smaller than the width of a trespassing body to constitute an electric circuit 21; and when the glass is broken, the network made of the conductive substance is broken and the electric circuit is turned off, so that an alarm device is made to operate.
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