STRAIGHT PIPE TYPE LIGHT EMITTING DIODE ILLUMINATION LAMP

摘要

PROBLEM TO BE SOLVED: To provide a straight pipe type light emitting diode illumination lamp which attains high heat radiation performance and high lighting intensity.SOLUTION: A cover 23 includes: a translucent cover 31 which transmits light from LED elements 13; and a first heat sink 33 coupled to a heat sink 15. A second heat sink 17 receives heat generated by the LED elements 13 through a substrate 12 and transmits the heat to a third heat sink 19. The third heat sink 19 extends from one end serving as a coupling part coupled to the second heat sink 17 toward the translucent cover 31 and is coupled to the first heat sink 33 at the other end. The LED elements 13 are positioned on a center line 61 of the translucent cover 31 which is set along a cross section.SELECTED DRAWING: Figure 3