Patent ID: 8333632

Claim:
A method for manufacturing a lamp, wherein the lamp is configured to emit light in a frontward direction along a primary optical axis of the lamp, comprising: providing a plurality of light emitting devices including at least a first light emitting device and a second light emitting device; providing a first heat sink configured to dissipate heat generated by the plurality of light emitting devices, the first heat sink having a first branched part and a second branched part forming a generally Y-shaped configuration as viewed in a section that includes the primary optical axis of the lamp, the first branched part being connected with at least the first light emitting device, the second branched part being connected with at least the second light emitting device; providing a circuit substrate configured to supply power to the plurality of light emitting devices, the circuit substrate connected with the first heat sink at first and second sides of an unbranched part of the first heat sink, wherein an end of the unbranched part opposite from the first and second branched parts is thermally connected with a housing of the lamp, and a border area between the first and second branched parts and the unbranched part is thermally connected with the housing of the lamp; joining a second heat sink to a half of the circuit substrate in advance and before the half of the circuit substrate is connected with the first side of the unbranched part of the first heat sink; joining a third heat sink to an other half of the circuit substrate in advance and before the other half of the circuit substrate is connected with the second side of the unbranched part of the first heat sink; joining the second heat sink to the first side of the unbranched part of the first heat sink, thereby connecting the half of the circuit substrate with the first side of the unbranched part of the first heat sink; and joining the third heat sink to the second side of the unbranched part of the first heat sink, thereby connecting the other half of the circuit substrate with the second side of the unbranched part of the first heat sink.