Ceiling hanger
First Claim
Patent Images
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, forms a first rotation axis having a rotation axis in an up-down direction after being fitted to the first plate, and allows control in a horizontal direction around the first rotation axis;
a third plate forming a second rotation axis having a rotation axis in a front-rear direction after being fitted to the second plate, and allowing control in a left-right direction around the second rotation axis; and
a fourth plate fixed to the projector, 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,wherein, either one of the first plate and the second plate has a first screw member disposed substantially perpendicular to the first rotation axis; and
a control in the horizontal direction is carried out by rotating the first screw member provided on one of either one of the first plate and the second plate in abutment with the other of either one of the first plate and the second plate.
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Accused Products
Abstract
A ceiling hanger includes: a first plate fixed to a ceiling surface; a second plate forming a first rotation axis in the up-down direction after fitted to the first plate, and allowing control in the horizontal direction; a third plate forming a second rotation axis in the front-rear direction after fitted to the second plate, and allowing control in the left-right direction; and a fourth plate fixing a projector, forming a third rotation axis in the left-right direction after fitted to the third plate, and allowing control in the up-down direction.
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Citations
19 Claims
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1. A ceiling hanger for a projector, comprising:
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a first plate fixed to a ceiling surface; a second plate positioned on the ceiling surface together with the first plate, forms a first rotation axis having a rotation axis in an up-down direction after being fitted to the first plate, and allows control in a horizontal direction around the first rotation axis; a third plate forming a second rotation axis having a rotation axis in a front-rear direction after being fitted to the second plate, and allowing control in a left-right direction around the second rotation axis; and a fourth plate fixed to the projector, 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, wherein, either one of the first plate and the second plate has a first screw member disposed substantially perpendicular to the first rotation axis; and a control in the horizontal direction is carried out by rotating the first screw member provided on one of either one of the first plate and the second plate in abutment with the other of either one of the first plate and the second plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A ceiling hanger for a projector, comprising:
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a first plate fixed to a ceiling surface; a second plate positioned on the ceiling surface together with the first plate, forms a first rotation axis having a rotation axis in an up-down direction after being fitted to the first plate, and allows control in a horizontal direction around the first rotation axis; a third plate forming a second rotation axis having a rotation axis in a front-rear direction after being fitted to the second plate, and allowing control in a left-right direction around the second rotation axis; a fourth plate fixed to the projector, 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; the first plate has either one of a cylindrical portion and a first opening which receives insertion of the cylindrical portion, the second plate has the other of the cylindrical portion and the first opening, so that the first plate and the second plate having one and the other of the cylindrical portion and the first opening, respectively, produce the first rotation axis; the third plate has a second opening in an area opposed to the first opening; and a cable connected with the projector is inserted through the cylindrical portion, the first opening, and the second opening.
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Specification