Patent ID: 8592830

Claim:
An LED unit comprising: a plurality of LED modules; and a heat radiation plate, wherein: each of said plurality of LED modules comprises an LED chip and a package, said package being configured to incorporate said LED chip therein, said package having an electrical insulation property, each said package includes a sub-mount member having a heat conductivity, said sub-mount member being located between said LED chip and said heat radiation plate, said sub-mount members being integrally formed with each other, said plurality of LED modules are arranged on a first surface of said heat radiation plate, each of said plurality of LED modules is provided at its outer surface with a positive terminal and a negative terminal which are electrically coupled to an anode and a cathode of said LED chip, respectively, said heat radiation plate is provided at its first surface with an electrical insulator which is located adjacent to said plurality of LED modules, said electrical insulator comprises a main member and an extending member, said main member of the electrical insulator having a top surface and being provided at its top surface with a patterned circuit, said patterned circuit is configured to connect said plurality of LED modules to each other, said patterned circuit is provided with a plurality of pads which are coupled to said terminals of each of the plurality of LED modules by a solder, each of said LED modules is provided with said positive terminal and said negative terminal at least one of which is provided in a plural number, said heat radiation plate is provided at its top surface with a groove which extends in a first direction, said groove being formed such that the electrical insulator is disposed within the groove, said extending member is formed to project from a side surface of the main member, said extending member has a top surface and is configured to mount a first end portion of a third surface of each the LED module, and a remaining part of each of the plurality of LED modules is directly mounted on the heat radiation plate.