LIGHT-EMITTING DIODE LAMP AND LIGHTING SYSTEM

摘要

PROBLEM TO BE SOLVED: To gather light-emitting diodes disposed on a head part of a light-emitting diode lamp to the center of a top part so as to achieve light distribution toward the top part.SOLUTION: A light-emitting diode lamp includes: a light-emitting diode unit 10 having light-emitting diodes 11 mounted on an external surface of a support member 13 including a prismatic tube part 411 and a pyramid-shaped pyramidal part 412; and a cylindrical glass bulb 21 to dispose therein the light-emitting diode unit 10. In the pyramidal part 412, mounting surfaces Y1-Y6 having a large height and non-mounting surfaces S1-S6 having a small height are alternately disposed from one end of the tube part 411, and the light-emitting diodes 11 are respectively disposed on the mounting surfaces Y1-Y6.