PURPOSE: A lamp apparatus is provided to be used for various bulbs by using a socket part which rotates around a base cover. CONSTITUTION: A body part(200) includes a reflecting body for condensing the light of a light emitting unit. The body part is combined with a base cover(100) by using a fixing member. A socket part(300) includes a fixing unit(310) for combining the body part; and a slide part(320) for moving along the fixing unit. The socket part has heat dissipation holes(302). The shape of the socket part is cylindrical.
