Emergency lamp lighting system
专利汇可以提供Emergency lamp lighting system专利检索，专利查询，专利分析的服务。并且PURPOSE:To make the construction of an emergency lamp lighting system and at the same time to improve reliability of it operation, by connecting a semiconductor switching element in the emergency lamp lighting circuit and controlling its operation by means of light emitting and receiving element. CONSTITUTION:In normal condition, light is emitted from light emitting element 27 with connection of Ac power source 21, and light receiving element 28 having received the light from the light emitting element 27 de-energizes semiconductor switching element 29, so that lamp 30 is kept in its OFF-condition and battery 26 is charged by DC current. On the other hand, when power source 21 is disconnected at the time of emergency, semicondutor switching element 29 is energized by the light receiving element 28 so that lamp 30 is turned ON by the current supplied from battery 26. Further, a screen plate 31 is disposed between the above two elements 27 and 28, in the manner that it is moved by pull string 32 to a position capable of screening the light from element 27 temporarily, whereby it is enabled to detect with ease and correctness whether some trouble is caused with the system or not.，下面是Emergency lamp lighting system专利的具体信息内容。
| 标题 | 发布/更新时间 | 阅读量 |
|---|---|---|
| 一种磁悬浮列车及其牵引控制方法 | 2020-05-08 | 742 |
| 一种矿山井下监控通讯一体化安全系统 | 2020-05-11 | 395 |
| 一种调光方法、调光器、调光应急逆变器及应急照明系统 | 2020-05-11 | 950 |
| 一种多功能智能消防应急系统 | 2020-05-11 | 506 |
| 电力载波/NB-IOT通信的银行机房供用电管控系统 | 2020-05-11 | 519 |
| 高锰酸钾指数分析仪 | 2020-05-11 | 896 |
| 一种基于双界面RFID技术的电力智能锁具控制方法及系统 | 2020-05-11 | 725 |
| 一种飞机后顶板模拟器 | 2020-05-08 | 884 |
| 手动报警系统 | 2020-05-11 | 21 |
| 一种智慧照明系统 | 2020-05-11 | 295 |
高效检索全球专利专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。
我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。
专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。
