ILLUMINATING DEVICE WITH EXTENED EMISSION ANGLE

摘要

PURPOSE: A lighting device with an extended radiation angle is provided to improve luminous efficiency by radiating light at the radiation angle over 300 degrees through a light diffusion globe after light from the light source is condensed on a condensing lens. CONSTITUTION: A condensing lens(60) condenses light from a light source. A light guide rod(70) guides light from the condensing lens in an optical axis direction of the condensing lens. An aluminum thin film(420) is formed on the bottom side of an LED substrate(410). A substrate(430) is formed on the bottom side of the aluminum thin film. A light diffusion globe(80) diffuses light passing through the light guide rod.