Abstract: A circuit board structure includes a first sub-circuit board, a second sub-circuit board, and a third sub-circuit board. The first sub-circuit board has an upper surface and a lower surface opposite to each other, and includes at least one first conductive through hole. The second sub-circuit board is disposed on the upper surface of the first sub-circuit board and includes at least one second conductive through hole. The third sub-circuit board is disposed on the lower surface of the first sub-circuit board and includes at least one third conductive through hole. At least two of the first conductive through hole, the second conductive through hole, and the third conductive through hole are alternately arranged in an axial direction perpendicular to an extending direction of the first sub-circuit board. The first, second and third sub-circuit boards are electrically connected to one another.

Abstract: A street lamp capable of adjusting illuminating range thereof and having LEDs as its light source is provided. The street lamp comprises: a main supporting member; a substrate, one end of the substrate being pivotally fixed to the main supporting member by a first fastening member, and an LED light source being provided on the surface opposite to the main supporting member; and an adjusting member provided between the main supporting member and the substrate, one end of the adjusting member being pivotally fixed to the main supporting member by a second fastening member, wherein a fixing member for adjusting the angle of the substrate to adjust the illuminating angle is provided between the substrate and the adjusting member when the first fastening member and the second fastening member are pivotally movable.