Patent ID: 8979312
Filing Date: 2015-03-17
Classification: F21K,F21V,F21Y

Abstract:
1. A light emitting diode (LED) bulb comprising: a connecting body; a mounting base located at a second end of the connecting body opposite to a first end of the connecting body, the mounting base comprising a top face spaced from the connecting body and at least three surrounding walls interconnecting the connecting body and the top face thereof, the top face orienting toward a direction different that of each of the at least three surrounding walls; a plurality of LED modules mounted on the top face and the at least three surrounding walls of the mounting base; and a lens coupled to and covering the LED modules mounted on the top face of the mounting base, the lens comprising a concave light incident face facing the LED modules mounted on the top face of the mounting base, a convex light exiting face opposite to the light incident face, and a connecting face interconnecting the light incident face and the light exiting face; wherein the light exiting face comprises a first curved surface and a second curved surface, and an inner periphery of the first curved surface intersects with an inner periphery of the second curved surface in a straight line; wherein the first curved surface and the second curved surface are symmetrically arranged with respect to a plane containing the straight line and perpendicular to the top face of the mounting base, and a distance between the light incident face and the light exiting face increases from the straight line toward the connecting face of the lens along a lateral direction; wherein there are at least two LED modules mounted on the top face of the mounting base and receiving in a cavity surrounded by the light incident face, and the at least two LED modules are symmetrically arranged with respect to the plane containing the straight line and perpendicular to the top face of the mounting base; and wherein the light incident face is semi-spherical and has a central axis of symmetry, and the central axis of the light incident face lies in the plane containing the straight line and perpendicular to the top face of the mounting base.