If we optimize the circuit and control system in a patent without adding new functions, can we apply for an invention patent again?

Your street lamp patent has disclosed this control system, so if someone applies this system to other places, as long as its functions are the same, then this part of the content is not creative.

If someone applies for a telephone patent, including a voltage regulator and your control system, such a claim is not creative. The utility model application can be authorized, but it is easy to fail, and the invention application will not be authorized.