Patent ID: 7357532

Claim:
A lamp module mounted on a housing, and the lamp module comprising: a lamp, wherein a plane perpendicular to an optical axis of the lamp is defined by an x-axis direction and a y-axis direction mutually perpendicular to each other; and a lamp sleeve in which the lamp is mounted, wherein a positioning piece is formed at one end of the lamp sleeve for mounting the lamp sleeve on the housing, and the positioning piece comprises: a first surface and a second surface respectively parallel to the x-axis direction and the y-axis direction, wherein at least one of the first surface and the second surface is equipped with an adjustable apparatus for adjusting the alignment of the lamp by moving the positioning piece along at least one direction the x-axis and the y-axis, and the adjustable apparatus comprises: a positioning component situated on the surface of the positioning piece parallel to the to-be-adjusted direction; a fastener situated on the other surface of the positioning piece perpendicular to the to-be-adjusted direction, and the fastener fastened into the positioning piece through the housing; and an elastic component mounted on the fastener, and disposed between the housing and the positioning piece, wherein a fastening direction of the fastener is parallel to the to-be-adjusted direction during adjustment, and a distance between the housing and the positioning piece is adjustable and determined according to compression condition of the elastic component.