Patent ID: 9576939
Date: 2017-02-21
CPC Classifications: C09K,F21K,H01L,H05B,Y02B

Claim:
1. A light emitting device comprising: a first light emitting portion for emitting daylight with a high color temperature of 6000K or more; and a second light emitting portion for emitting warm white light at a color temperature of 3000K or less, and a molding portion encapsulating the first light emitting portion and the second light emitting portion in common, wherein each of the first and second light emitting portions comprises a light emitting diode chip and a phosphor, wherein the first and second light emitting portions are disposed in one package, the one package comprising a housing, lead frames protruding from sides of the housing, and a heat sink passing through the housing, the heat sink comprising protruding portions on its upper surface, wherein the protruding portions each comprise a top surface extending substantially parallel to the upper surface of the heat sink, the top surfaces of the protruding portions being raised above the upper surface of the heat sink in a direction extending away from a bottom surface of the light emitting device, wherein the light emitting diode chips of the first and second light emitting portions are driven independently, the light emitting diode chips are disposed on the top surfaces of the protruding portions of the heat sink, respectively, and the light emitting diode chips are encapsulated by a compound comprising the phosphor and a resin, the compound being disposed only on the top surfaces of the protruding portions, wherein the molding portion covers side surfaces of the protruding portions, the side surfaces of the protruding portions respectively connecting the top surfaces thereof and the upper surface of the heat sink, and wherein the phosphor is expressed by Chemical Formula 3 as follows: wherein the M