Patent ID: 8901578

Claim:
An LED (Light Emitting Diode) module comprising: an LED unit having one or more LED chips; and a case including: a body including a base plate made of ceramic, the base plate having a main surface and a bottom surface opposite to the main surface; a through conductor penetrating through the base plate; and one or more pads formed on the main surface and making conductive connection with the through conductor, the pads mounting thereon the LED unit, wherein the through conductor includes: a main surface exposed portion exposed to the main surface and overlapping the LED unit when viewed from top, at least a part of the main surface exposed portion being buried under the main surface of the base plate, and at least a part of the main surface exposed portion having a caved shape deviated from the LED unit; a bottom surface exposed portion exposed to the bottom surface; and a reaching portion connected to the main surface exposed portion and the bottom surface exposed portion, wherein the pads cover at least a portion of the main surface exposed portion, wherein the reaching portion is smaller than the main surface exposed portion and the LED unit when viewed from top, and wherein the main surface exposed portion contains the LED unit when viewed from top.