| 摘要 |
<p>A flexible sign face (10) has uniform luminosity. The sign includes an elongated enclosure having a rear wall (12) and a flexible face translucent front wall (14), spaced from the rear wall. A plurality of point sources of light (26) are spaced along the rear wall between the front and rear walls. A reflector (30) is provided between each pair of adjacent point sources for reflecting light received from each adjacent point source, toward the flexible face. A diffusion panel (32) is in front of each point source, and between each point source and the front wall. The diffusion panel (32) has perforations (44) in a pattern which increase in density from a center of the panel outwardly toward edges of the panel. The panel also includes a metal corrugated portion (40) carrying the perforations and a translucent acrylic portion (42) to the corrugated portion.</p> |
