高层建筑、旅馆、饭店、医院等人员集中的场所,一旦发生火灾,利用有线广播系统进行避难引导是十分重要的。但是,由于扬声器耐火时间短,常常在火灾初期就被烧毁,致使不能执行避难引导的作用。为此,日本京都市消防局最近进行了一次紧急疏散用扬声器的耐火试验。情况如下: High-rise buildings, hotels, restaurants, hospitals and other staff concentration of places, in the event of a fire, the use of cable broadcasting system for evacuation guidance is very important. However, since the speaker has a short fire-resistant time, it is often burned in the early stages of the fire, rendering the evacuation guide impossible. To this end, Japan’s Kyoto City Fire Department recently conducted an emergency evacuation loudspeaker fire test. details as following: