A traffic signal lamp and a traffic signal lamp system capable of automatically converting display shapes
By dividing traffic lights into left arrows and other light units, and using relay modules to automatically switch the display shape, the cumbersome operation problem of simultaneously allowing straight and left turns is solved, achieving automatic switching and compliance with national standards, and improving traffic efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI NORTH ZHONGCHENG TECHNOLOGY CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-06-26
AI Technical Summary
When existing traffic lights allow both straight and left turns to proceed simultaneously, switching the left-turn arrow light to a circular light is cumbersome, does not reduce manual operation, may not comply with national standards, and poses a safety hazard.
The traffic light is divided into a first LED unit in the shape of a left arrow and other LED units. The display shape is automatically switched through a relay control module, so that when the left turn and straight traffic lights are lit at the same time, they automatically switch to a circle without any manual intervention.
It enables automatic switching of traffic lights when both straight-ahead and left-turn traffic are allowed simultaneously, improving traffic efficiency, meeting national standards, reducing manual operation, and avoiding safety hazards.
Smart Images

Figure CN224417389U_ABST