Patent ID: 7459648

Claim:
A device comprising: a substrate arranged in an interior of the device having a single light emitting element positioned on an upper surface of the substrate; and a push button assembly disposed in an exterior structure of the device and centered above the single light emitting element, the push button assembly comprising, a cylindrical light guide centered above the single light emitting element, the cylindrical light guide for receiving and guiding the light from the single light emitting element to an annular display part disposed on an upper portion of the cylindrical light guide for displaying the light, the cylindrical light guide being further defined by a lower end, an inner wall, an outer wall, a first inclined plane disposed on the outer wall and configured for guiding the light emitted by said single light emitting element to said annular display part, and a second inclined plane disposed on an end portion on the lower end of the inner wall and configured for guiding the light emitted by said single light emitting element to the first inclined plane; and a push button part disposed at a position centered above said single light emitting element and formed integrally with said cylindrical light guide.