A connector device for an illumination apparatus, comprising a stationary element for connecting to the illumination apparatus, a first movable element for connecting to a power supply, a second movable element rotatably connected to the stationary element, and a locking element arranged inside the stationary element and located between the stationary element and the second movable element, characterized in that the connector device is provided such that a rotation of the second movable element in a first direction drives the locking element to release locking of the second movable element, and when the second movable element continues to be rotated in the first direction and drives the first movable element to rotate together, rotation of the first movable element enables the locking element to release locking of the first movable element, wherein at least one first drive structure configured as a first recess and a second drive structure configured as a second recess are arranged on a surface of the second movable element facing the stationary element, wherein an end portion of the locking element interacts with the first drive structure, wherein the second movable element, with the interaction between the first drive structure and the locking element, enables the locking element to move and release locking of the second movable element, and the second movable element, with the interaction between the second drive structure and the first movable element, drives the first movable element to rotate together, wherein the first drive structure, with an axial component force generated on the locking element when the second movable element is rotated, enables the locking element to move axially to release locking of the second movable element, and wherein the locking element locks the second movable element when the locking element is received in the first drive structure. characterized in that the connector device is provided such that a rotation of the second movable element in a first direction drives the locking element to release locking of the second movable element, and when the second movable element continues to be rotated in the first direction and drives the first movable element to rotate together, rotation of the first movable element enables the locking element to release locking of the first movable element, wherein at least one first drive structure configured as a first recess and a second drive structure configured as a second recess are arranged on a surface of the second movable element facing the stationary element, wherein an end portion of the locking element interacts with the first drive structure, wherein the second movable element, with the interaction between the first drive structure and the locking element, enables the locking element to move and release locking of the second movable element, and the second movable element, with the interaction between the second drive structure and the first movable element, drives the first movable element to rotate together, wherein the first drive structure, with an axial component force generated on the locking element when the second movable element is rotated, enables the locking element to move axially to release locking of the second movable element, and wherein the locking element locks the second movable element when the locking element is received in the first drive structure.