发明名称 |
Smoke penetrating emergency light |
摘要 |
A self-contained, portable lighting apparatus is disclosed. The apparatus functions as an escape light in conjunction with smoke detector alarms in that it is activated by detecting the sound of such alarms. A lighting unit includes circuitry for detecting the alarm of a smoke detector, integrating the detected signal over a predetermined time to minimize the incidence of false alarm, circuitry for delaying the shutting off of the light after the alarm signal has ceased and circuitry for detecting a low voltage condition of the batteries and for providing an intermittent sound that is indicative of a low voltage battery condition.
|
申请公布号 |
US4432041(A) |
申请公布日期 |
1984.02.14 |
申请号 |
US19820453603 |
申请日期 |
1982.12.27 |
申请人 |
FIREX CORPORATION |
发明人 |
PFISTERER, RICHARD E.;SCHULTZ, RICHARD M. |
分类号 |
G01R31/36;G08B1/08;G08B5/36;G08B29/18;H03K17/94;(IPC1-7):H04M1/22 |
主分类号 |
G01R31/36 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|