| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve problems that, although a conventional LED bulb mounts LEDs on an outer side face axially perpendicular to an outer side wall along an axial direction of a cylindrical board and it can emit strong light also in a direction perpendicular to the axis of the board by preparing a translucent cover so as to cover the board and it can widen an irradiation range (a light distribution area), manufacturing processes of the LED bulb become complicated and accordingly, manufacturing cost of the LED bulb becomes higher. <P>SOLUTION: The LED bulb includes a plurality of LED light sources 2; a heat radiation section having a light source mounting surface 3 wherein the plurality of LED light sources 2 are arranged in a circumferential state; a reflecting body 6 having a pillar-shaped projection 12 surrounded by the plurality of LED light sources 2 and projected from a light-emitting surface of the LED light sources 2 to a light-emitting direction and a reflecting surface 11 equipped with a light extraction window corresponding to positions and shapes of the LED light sources 2; and a light-transmitting section 5 for covering the plurality of LED light sources 2 and the reflecting body 6 and reflecting at least part of light emitted from the LED light sources 2. <P>COPYRIGHT: (C)2012,JPO&INPIT |
