Patent ID: 8899795

Claim:
A lamp device comprising: a substrate on which an LED chip is mounted; a lighting device for lighting the LED; and a metallic cover comprising: a planar substrate attachment portion with which the substrate is brought into thermal contact and which separates the substrate and the lighting device, an outer peripheral portion: extending continuously in a radially outward direction from the planar substrate attachment portion in the plane of the substrate attachment portion, projected in a vertical direction with respect to a surface of the substrate attachment portion, a lower side of the outer peripheral portion being projected lower in the vertical direction than the substrate attachment portion, and formed in a cylindrical shape, wherein an upper side face of the outer peripheral portion defines a maximum outer diameter of the metallic cover, the maximum outer diameter of the metallic cover being greater than a height of the metallic cover, a cover attachment portion disposed on the lower side of the outer peripheral portion and arranged lower in the vertical direction than the substrate attachment portion, and heat radiating fins disposed on an upper side of the outer peripheral portion, wherein heat generated by the LED is conducted to the outer peripheral portion from the substrate attachment portion and radiated into air from the outer peripheral surface of the outer peripheral portion; a cap comprising: a cap case comprising an annular substrate portion and a cylindrical projection portion projected in a vertical direction with respect to the surface of the substrate attachment portion from the center of an upper surface of the annular substrate portion, wherein the lighting device is disposed inside the cap case, and lamp pins which are configured to supply power to the lighting device and are disposed in the annular substrate portion radially outside the projection portion; and a translucent cover attached to the cover attachment portion.