发明申请
- 专利标题： Intelligent light degradation sensing LED traffic signal
- 专利标题（中）： 智能光衰降感光LED交通信号灯
-
申请号： US11093391申请日： 2005-03-30
-
公开(公告)号： US20050206529A1公开(公告)日： 2005-09-22
- 发明人: Nicolas St.-Germain
- 申请人： Nicolas St.-Germain
- 主分类号： B61L5/18
- IPC分类号： B61L5/18 ; G08G1/095 ; H05B33/08 ; H05B37/03 ; G08B5/22
摘要：
The inventive signal incorporates an intelligent diagnosis module inside a light emitting diode (LED) signal, such as an LED traffic signal. The inventive signal can self-extinguish or send a signal through its communication port at the end of its useful life when the LEDs are no longer providing the required light output. Additionally, the inventive signal sends a signal to increase the current as the LEDs degrade to ensure the light output is above a threshold minimum.
公开/授权文献
- US07425798B2 Intelligent light degradation sensing LED traffic signal 公开/授权日：2008-09-16