Patent ID: 8292462

Claim:
A lamp seat structure capable of adjusting light source sensing direction, comprising: a connecting seat comprising a base, a metallic lid, a cylinder, a circuit modular board, an outer metallic conducting rod and an inner metallic conducting rod; the base including an inner ring extending from a lower end of the base, a blocking board extending from an edge of the inner ring, a post extending from an upper end of the base, a second through hole formed at a central portion of the base; the metallic lid being fitted on the post and including an insulating pad on top of the metallic lid, the insulating pad having a first through hole at a central portion thereof; the cylinder including a limit light trough formed on an outer wall of a middle portion thereof, a partition in the middle portion, and an inner threaded section formed at a lower end thereof, the partition having a third through hole at a central portion thereof, the base and the cylinder being selectively rotatable with respect to one another; the circuit modular board including a fourth through hole at a central portion thereof, a plurality of light emitting diodes on a bottom of the circuit modular board, a light sensor extending from a top of the circuit modular board and corresponding in height to the limit light trough; the outer metallic conducting rod including an outer locking cap at an upper end thereof and a threaded section formed on a lower end thereof, the outer metallic conducting rod being inserted in the first through hole of the insulating pad, the metallic lid, and the second through hole of the base so that the metallic lid being fitted on the post of the base; the inner metallic conducting rod including an inner locking cap at a lower end thereof and a threaded hole formed in an upper end thereof, the inner metallic conducting rod being inserted in the fourth through hole of the circuit modular board and the third through hole of the cylinder, the threaded hole of the inner metallic conducting rod being engaged with the threaded section of the outer metallic conducting rod so that the circuit modular board is confined to lean against a lower edge of the partition; and a lampshade having a lamp head in a geometric shape, the lamp head having an outer threaded section to engage with the inner threaded section of the cylinder; thereby, the outer metallic conducting rod and the inner metallic conducting rod connecting the base, the metallic lid, the cylinder, and the circuit modular board together to be screwed to a lamp holder for the plurality of light emitting diodes disposed under the circuit modular board to illuminate, the blocking board being movable to selectively prevent light from reaching the light sensor through rotating the blocking board to block the limit light trough to select automatic illumination or constant illumination of the plurality of light emitting diodes.