Patent ID: 8430542

Claim:
A lamp, comprising: a bracket comprising a shaft, the shaft having a flat top surface; a lamp body pivotably engaged with the shaft of the bracket, the lamp body comprising a first lateral portion at a side of the shaft and a second lateral portion at an opposite side of the shaft, the lamp body defining a channel to receive the shaft, the lamp body having a flat top surface in the channel; and a cover mounted on a top of the second lateral portion; wherein when the lamp body is at a first position, the top surface in the channel of the lamp body engages on the top surface of the shaft, and when the first lateral portion of the lamp body is subjected to an exterior force acting thereon which is beyond a set value, the lamp body rotates around the shaft from the first position to a second position in which the top surface of the channel leaves from the top surface of the shaft, and when the exterior force disappears or decreases to be less than the set value, the lamp body returns from the second position to the first position, the exterior force being exerted on the first lateral portion by weight of snow/ice accumulated on the first lateral portion.