Patent ID: 8455892
Filing Date: 2013-06-04
Classification: F21V,F21Y,H01L,H05K,Y02P

Abstract:
1. An LED module comprising: a substrate including a main surface and a rear surface that are opposed to each other; a plurality of LED chips arranged on the main surface of the substrate; a drive circuit chip provided on the substrate for driving the plurality of LED chips; a first heat dissipator that is provided on the rear surface of the substrate and that overlaps the plurality of LED chips as viewed in a thickness direction of the substrate; and a second heat dissipator that is provided at a position closer to the drive circuit chip than the first heat dissipator is, and that has a thickness greater than that of the first heat dissipator, wherein the drive circuit chip is arranged on the main surface of the substrate; the second heat dissipator is provided on the rear surface of the substrate, and overlaps the drive circuit chip as viewed in the thickness direction of the substrate; a wiring pattern for connecting the plurality of LED chips and the drive circuit chip to each other is formed on the main surface of the substrate; a through-hole wiring connected to the wiring pattern is formed in the substrate; a metal layer connected to the through-hole wiring is formed on the rear surface of the substrate; and the second heat dissipator is in contact with the metal layer.