Patent ID: 8618901
Filing Date: 2013-12-31
Classification: F21V,H01F

Abstract:
1. A power acquisition device to be fixed to an illuminating device having a fluorescent tube and a reflective plate so as to acquire power from a magnetic field generated by an alternating current flowing through the fluorescent tube by electromagnetic induction, wherein the power acquisition device is fixed to surround the fluorescent tube, and at least either a thickness of the power acquisition device in the direction perpendicular to the surface of the fluorescent tube or a length of the power acquisition device in the direction parallel to the length direction of the fluorescent tube is non-uniformly, and wherein when the area where the reflective plate exists in the direction perpendicular to the surface of the fluorescent tube is a first area; the area where the reflective plate does not exist in the direction perpendicular to the surface of the fluorescent tube is a second area; the minimum distance between the surface of the fluorescent tube and reflective plate in the first area is distance D the thickness D