| 主权项 |
1. A ceiling hanger for a projector, comprising:
a first plate fixed to a ceiling surface; a second plate positioned on the ceiling surface together with the first plate, wherein the second plate forms a first rotation axis having a rotation axis in an up-down direction, and allows control in a horizontal direction around the first rotation axis, the second plate including first and second members extending in the up-down direction; a third plate mounted to the first and second members of the second plate, a second rotation axis, having a rotation axis in a front-rear direction after being fitted to the second plate, extending through a portion of the first and second members and the third plate, and allowing control in a left-right direction around the second rotation axis, the third plate include a holding portion extending in the up-down direction, the holding portion including a recess open in the up-down direction; and a fourth plate fixed to the projector, the fourth plate including a member extending in the up-down direction and a support shaft which is held in the recess to suspend the fourth plate from the third plate with the member extending through a main body member of the third plate in the up-down direction after the fourth plate is fitted to the third plate, the support shaft forming a third rotation axis having a rotation axis in the left-right direction after being fitted to the third plate, and allowing control in the up-down direction around the third rotation axis. |
