| 摘要 |
PURPOSE:To obtain uniform light emission and coloring of a light emitting plane with a simple process by a method wherein a printed circuit board on which light emitting diodes are mounted is so provided as to make the diodes face a plurality of windows of a package panel and light shielding walls between adjacent windows are inserted into the printed board. CONSTITUTION:Light shielding walls 1c are solidly molded with a package panel 1 and protrude inward. The light shielding walls 1c are so provided as to surround respective four sides of two center windows 1a among four windows 1a. The light shielding walls 1c are inserted into a printed board 2 through an LED lens 4 and shield the light between the adjacent windows 1c over the whole area from the main body of the package panel 1 to the printed board 2 without any gap. Therefore, a boundary line between a plurality of LED lamp cases is not visible on one light emitting plane. Further, as lights emitted from two LED chips are guided to one light emitting plane through the LED lens 4 only, the light emission and coloring on one light emitting plane can be uniform and excellent appearance can be obtained. |
