| 摘要 |
A heat sink for lighting, according to the present invention, comprises: a base on one surface of which a substrate is installed, wherein on the substrate a plurality of LEDs are arranged; a plurality of first heat dissipation fin arrays, which are formed on the other surface of the base and are radially arranged at a specific angle with respect to the center of the base; a plurality of second heat dissipation fin arrays, which are formed in between the first heat dissipation fin arrays and are radially arranged at a specific angle with respect to the center of the base, wherein each of the first heat dissipation fin arrays comprises a plurality of first heat dissipation fins that are arranged in a single line, each of the second heat dissipation fin arrays comprises a plurality of second heat dissipation fins that are arranged in a single line, wherein the first heat dissipation fins and the second heat dissipation fins are formed so that the heights thereof increase toward the center of the base in accordance with a flow path of a cooling fluid, which is introduced between the first heat dissipation fin arrays and the second heat dissipation fin arrays, thereby maintaining a heat dissipation effect that is equal or similar to that of existing heat sinks for lighting while considerably reducing material cost for the heat sink and significantly increasing the flow of the cooling fluid. |
