| 摘要 |
<p>A pedestrian traffic light head having a countdown timer associated with both a walking pedestrian symbol, and also the stop hand symbol. This timer indicates the amount of time left until the associated pedestrian traffic light head changes state, i.e. from the illuminated walk symbol to the blinking don't Walk hand symbol, and from the blinking don't Walk symbol to the solid illuminated Don't Walk hand symbol. Preferably, the pedestrian traffic light head is a solid state device including a suspended particle such as an LCD, operating as a light down display operating in association Preferably, a diffuser is light to the suspended i.e. generate a numerical filter to generate an illuminated count with the status of the Walk and Don't Walk symbols. disposed over the LED array to provide a homogenous particle which modulates the light to control shape count down display.</p> |
