Patent ID: 8702289
Filing Date: 2014-04-22
Classification: F21S,F21V,F21Y

Abstract:
1. A lighting unit comprising: a light source including a semiconductor light emitting device; a fluorescent member including a fluorescent portion configured to receive part of or all of light emitted from the light source and to emit visible light with a predetermined color; a projector type lens having an optical axis intersecting with the fluorescent member, the projector type lens configured to project the visible light emitted from the fluorescent member forward in a direction of the optical axis; and a driving member connected to the fluorescent member and configured to rotate the fluorescent member around a rotation shaft substantially perpendicular to the optical axis of the projector type lens, wherein the fluorescent member is shaped such that when the fluorescent member is rotated by a predetermined angle from a first position to a second position by the driving member and viewed from the projector type lens, a plurality of contours of the fluorescent portion projected by the projector type lens are changed in accordance with the predetermined angle.