本专利在日本公开以前,日本专利厅曾公布过防范玻璃专利。但是,那时的防范玻璃缺乏报警的隐蔽性和透明性,因此,在诸如贵重物品店或小轿车上,很难安装这种防范玻璃。本发明的防范玻璃是在透明电子绝缘材料组成的底部内,并设多股不相互交叉极细的导电线,从而形成导电性透明体,导电线的末端用导电材料连接成束状,电线的两端与报警线路相连接,构成防 Prior to the publication of this patent in Japan, the Japan Patent Office had announced the patent for preventive glass. However, at that time, the guard glass lacked the hiding and transparency of the alarm, so it was difficult to install such guard glass on stores such as valuables or cars. The glass of the present invention is made of a transparent electronic insulating material in the bottom of the composition, and provided a plurality of non-intersecting cross-thin conductive lines to form a conductive transparent body, the ends of the conductive lines connected with the conductive material into a bundle, Both ends of the alarm circuit connected to form a defense