Patent ID: 8297787
Filing Date: 2012-10-30
Classification: F21K,F21V,F21Y,H05K

Abstract:
1. A method for housing multiple light emitting diodes in a light emitting diode light bulb comprising: providing a transparent housing and a base that forms an electrical socket; providing a plurality of printed circuit boards having different sizes; mounting said light emitting diodes on outer peripheral edges of said plurality of printed circuit boards so that said light emitting diodes face in a substantially uniform direction that is substantially perpendicular to said plurality of said printed circuit boards; constructing a pyramidal structure of said plurality of printed circuit boards by stacking said plurality of printed circuit boards in substantially parallel planes along an axis to form substantially parallel layers of said printed circuit boards, said plurality of printed circuit boards forming said pyramidal structure such that said outer peripheral edges of adjacent printed circuit boards of said plurality of printed circuit boards do not extend substantially over said light emitting diodes that are disposed around said outer peripheral edges of said plurality of printed circuit boards and do not substantially block light and heat emitted from said light emitting diodes in an axial direction, said printed circuit boards stacked substantially symmetrically along said axis to provide an axial spacing between said plurality of printed circuit boards, so that said light emitting diodes on said outer peripheral edge on each said printed circuit board layer do not block light and heat emitted by said light emitting diodes from adjacent layers of said printed circuit boards in a direction that is substantially perpendicular to said axis; connecting said multiple printed circuit boards having said multiple light emitting diodes with connector wires.