Patent ID: 8684567

Claim:
A lamp comprising: a first housing; a second housing comprising a first sidewall and a second sidewall, wherein the second sidewall is perpendicularly connected to the first sidewall, the first sidewall comprises a first stop portion extending along a normal direction of the first sidewall, the second housing is detachably assembled with the first housing to form a housing assembly, and the housing assembly has a first opening; and a bulb base inserted into the first opening to be assembled with the housing assembly, wherein the lamp base comprises a second opening, a plurality of catches, and a second stop portion, and the catches are disposed on an outer sidewall of the second opening along a circumference direction of the second opening, the second stop portion is disposed on one of the catches and located on a rotation path of the first stop portion when the bulb base and the housing assembly move relative to each other, to limit an angle of rotation of the housing assembly relative to the bulb base.