They look like taxi lights, are mounted on the nose gear, and are pointed about 45 def left and right. They aid in finding taxiway turnoffs and other stuff to the side of the airplane.
FWIW, I fly the 747 Classic that has turnoff lights but no taxi lights. I taxi with the turnoff lights on virtually all the time. In the day time they might make the difference in some guy in a truck stopping where he should, or trying to cross in front of the moving airplane. At night they give a bit of forward visibility, but not much. I often have to use landing lights to supplement them on dark taxiways.
I've flown the 744 in both configurations (turnoff lights only and turnoff+taxi lights). I can't imagine why anyone would order the airplanes without taxi lights! It's a ridiculous way to "save money"!