US Patent 9651229 Suction anchoring device and light fixture having the same

A suction anchoring device for use in a light fixture includes a base unit and a movable unit. The base unit includes a casing defining a vent opening, and a surface-contacting member. The movable unit includes a mounting seat slidably disposed in the casing, and a seal member disposed under the mounting seat. The movable unit is movable relative to the base unit between an anchored position, where the seal member sealingly covers the vent opening so as to form a suction-forming space in which a part of air is vented out to create a suction force, and a lifted position, where the seal member is spaced apart from the vent opening to dismiss the suction force. A light fixture including the suction anchoring device is also disclosed.