other form of metal or metal allow may be substituted for aluminum and or aluminum alloy 5052 those of skill in the art will further appreciate that different environments of use will dictate the type of metal or metal alloy used to help evacuate heat metal or metal allow is a good conductor and if given the right surface finish will have the required roughness to increase surface natural convection in the air in one embodiment as shown housing 102 is generally circular in nature it is recognized however that housing 102 may take any desired shape such as but not limited to that of a square oval rectangle etc in the embodiment as shown the circular housing allows for the led illumination device 100 to have the same natural air convection coefficient whatever the radial orientation at installation i e offer a 360 deg symmetry in cooling as illustrated the exterior sides and base of housing 102 comprise a plurality of fins 105 that protrude radially outward from the center of the base of the housing 102 as seen in fig3 the plurality of fins 105 assist housing 102 in the thermal transfer of heat from the heat generating sources associated with the led illumination device 100 e g the leds themselves and driving power supply circuitry not shown in this fig to the atmosphere via convection and or irradiation the fins 105 increase the contact surface area between the heated housing and the cooler atmospheric or ambient air and create passages for the flow of heating air moving under its own convective force as shown the fins 105 are placed both at.