Abstract: A rotation control device for a support arm of a lamp comprises a support arm having a first end and a second end; a rotating arm having a first end and a second end; a lamp head assembled to the second end of the rotating arm; a cambered track fixed to a predetermined position of the support arm; and a cambered slot being formed in the cambered track; a stop sheet installed to a predetermined position of the cambered track; the stop sheet being movable along the cambered slot of the cambered track and is fixable at a predetermined position so that the rotating arm is retained to a predetermined angle.

Abstract: A rotating structure for folding supports of a lamp comprises a rotating axle having at least a support, and a fixed axle disposed in relation to the rotating axle, the fixed axle also includes at least a support thereon; a trough and an elastic positioning component disposed at a joined surface between the rotating axle and the fixed axle, so that the rotating axle causes that at least a support move positionally. As a result, the supports of the lamp of the invention is rotatable and is folded for storage, or unfolded for use.

Abstract: A vertical adjuster for a suspending lamp comprises a cylinder at an upper end of the lamp; an inner upper side of the cylinder having a threaded section; a lead wire having one end connected to the lamp and being positioned at a bottom of the cylinder; another end of the lead wire being fixed to a retainer; an adjuster formed by a seat and a slidable annular block; a center of the seat having a hole; the seat being locked to an upper end of the cylinder; the slidable annular block having an axial hole; a lateral side of the slidable annular block having a radial screw hole communicated to the axial hole; a screw unit being located in the screw hole; a cross section of the slidable annular block being slightly larger than that of the hole and the slidable annular block being located below the seat.

Abstract: An orientation adjustable lamp comprises a stand rod extended with a supporting frame; a rotation control device positioned to the stand rod; an arm having one end connected to the rotation control device and another end connected to a lamp. The rotation control device includes a seat, a rotation portion, a locking unit and a handle. The seat has an axial hole. The rotation portion is installed at one side of the seat. The rotation portion has a locking stud corresponding to the axial hole of the seat. One end of the locking stud is a threaded section. The rotation portion is installed with a threaded hole for locking the locking unit and a via hole which radially passes through the threaded section. The handle is installed at another side of the seat; the handle having a threaded hole for locking the locking stud and the threaded section.

Abstract: An expanding structure of a lamp comprises a seat; a plurality of supporting frames rotatably installed to a periphery of the seat; one end of each supporting frame being connected to the seat and other end of the supporting frame being connected to a respective lamp body; a stand tube extending from an upper end of the seat; a lead passing through an interior of the stand tube; a plurality of adjusting wires extending from a periphery of the stand tube; one end of each adjusting wire being connected to the supporting frame near the lamp body. A ring encloses the stand tube; the ring includes a connecting portion and a clamping portion; the connecting portion encloses around the stand tube. A motor is installed to the retainer. At least one pull wire is installed between the motor and the ring.