Patent ID: 8770793
Filing Date: 2014-07-08
Classification: F21K,F21V,F21Y,H01L

Abstract:
1. An LED bulb, comprising: a light source portion, comprising at least one LED chip; a housing, comprising a bottom portion supporting the light source portion and a sidewall portion surrounding the light source portion, and opening at one side of a first direction; a base, disposed on the other side of the first direction relative to the housing; and a light guide body, disposed in a space surrounded by the sidewall portion, and comprising an incident surface facing the light source portion, a light-emitting surface for making the light from the incident surface emit toward the one side of the first direction, and a peripheral side surface located between the incident surface and the light-emitting surface, wherein a cross-sectional area of the peripheral side surface becomes increasingly larger from a side of the incident surface toward a side of the light-emitting surface.