| 摘要 |
A running board lighting assembly consisting of an array of LEDs, a lens tube and a power circuit provides distributed light to the surface of a running board step which appears to be evenly distributed and which, when reflected from the running board step surface, appears to have a near incandescent quality. The LED array includes conventional green LEDs, which also emit longer wavelengths, horizontally and evenly spaced within the lens tube. The lens tube is installed within the running board cladding, above the running board step. The lens tube is extruded from acrylic material containing appropriate dye, so that when light from the green LED array passes through the lens tube, the green wavelengths are blocked and the yellow and some red wavelengths are passed, causing the resulting light reflected off the running board step to have a near incandescent appearance. The LEDs are interleaved in strings of four each, so if one string fails, the failure will be nearly imperceptible. The power circuit connects to the vehicle battery and regulates the current passing through the LED array. The power circuit also controls the on/off state of the running board lighting assembly according to the state of the courtesy lights and the on/off state of the vehicle's engine. |
