Patent ID: 6902298

Claim:
A lamp device comprising: a power line adapted to be connected to a power source; a socket adapted for mounting a light bulb; a light sensitive controller connected to said power line and said socket and adapted to enable and disable operation of the light bulb in accordance with ambient light conditions; and a rotary lamp base including a shell member including a top wall and a peripheral wall extending downwardly from a periphery of said top wall, said top and peripheral walls cooperating to confine a containing space, said socket and said light sensitive controller being mounted in said containing space, said top wall having top and bottom sides, and a through hole formed through said top and bottom sides to permit extension of said power line out of said containing space, said through hole having a hole axis, said peripheral wall being formed with a light sensor hole that is disposed in a radial direction relative to the hole axis and that is registered with said light sensitive controller to enable said light sensitive controller to detect ambient light conditions, a tubular pivot seat having upper and lower seat portions opposite to each other along the hole axis, and a retaining unit for retaining rotatably said lower seat portion of said pivot seat in said through hole in said top wall of said shell member so as to permit rotation of said shell member relative to said pivot seat about the hole axis.