| 摘要 |
PURPOSE:To prevent failure connection by arranging driving circuit boards approximately orthogonally to longitudinal display plane boards on which a light-emitting diode lamp is installed, fixing the driving circuit boards to each other, and fixing the rear sides of the driving circuit boards and a circuit board to each other. CONSTITUTION:A fixing means 4 is a means to fix driving circuit boards 3 one by one. To put it concretely, holes are formed respectively above and below in the vicinity of the overall surfaces of the respective driving circuit boards 3. Display plane boards 1, on with the driving circuit boards 3 are installed and which have a light-emitting diode lamp 2, are aligned so as to be adjacent approximately to each other in the lateral direction, that is, in the direction approximately orthogonal to the lengthwise direction of the display plane boards 1. A cylindrical spacer 41 formed of resin and so on is loaded on the holes of the respective driving circuit boards 3, and a bolt 42 is passed penetratingly through the holes of the respective driving circuit boards 3 and the spacer 41, and the tip is fastened by means of a nut. A circuit board 5 is fixed approximately orthogonally to the respective driving circuit boards 3 on the opposite side of the display plane boards 1, that is, in the rear sides of the driving circuit boards 3. |
