Patent ID: 7070305

Claim:
A rotation-controlled device for controlling actuation and de-actuation of the lamp comprising: an upper cover; an arc strip installed to an inner surface of the upper cover; an inner side of the arc strip having teeth; a seat installed below the upper cover by using a connector; a button installed to the seat and resisting against the arc strip; an out periphery of the button being formed with teeth: the teeth of the button being engaged to the teeth of the arc strip, and thus the button will be driven to rotate by rotating the arc strip; the button having a teethed through hole; an inner periphery of the teeth through hole being teethed; and a light adjuster installed below the button; the light adjuster having a teeth projection; a periphery of the teethed projection being teethed; the teethed projection being located within and engaged to the teethed through hole; the rotation of the button will drive the light adjusted and thus the actuation of the light adjuster being controllable by the button, an O ring being located between the button and the light adjuster; wherein by rotating the upper cover, the arc strip will also rotate to drive the button to rotate, and thus the light adjuster is actuated or de-actuated.