| 摘要 |
PURPOSE: An LED 3D sign board structure having transformed patterns is provided to produce patterns of a sign board using a sheet having an optical transmission hole. CONSTITUTION: A Sign board is formed out of a 3D sign board(201). The sign board is made of acrylic materials and includes a recessed rear side, an opaque lateral side, and a transparent front side. A PCB(203) having a plurality of LEDs(209) is arranged on the rear side of the 3D sign board. A first through hole(211) is formed on the front side of the 3D sign board along a uniform diagonal line which is inclined by an angle of a based on a horizontal line at a predetermined interval. A second through hole(213) is formed on the front side of a first sheet(205) along the uniform diagonal line which is inclined by the angle of b based on the horizontal line at a predetermined interval. A second sheet(207) has the second through hole. |
