| 摘要 |
An object of the invention is to make it easy to manufacture the lighting unit 4 in which a plurality of illuminants 1 are arranged on the concave face of a board 2 formed into a shape of a hollow truncated cone. A method of manufacturing a lighting unit comprises the steps of holding a flexible circular printed circuit board 2 having a concentric circular hole and a cutout which has at least two sides 2a, 2b in a planar state, embedding a plurality of illuminants 1 in the board, and jointing one side 2a of the cutout and the other side 2b of the cutout or holding both sides 2a, 2b in close contact so as to place the illuminants 1 in the side of the concave face of the board 2. |
