Patent ID: 6739746
Filing Date: 2004-05-25
Classification: A47G,G02B,Y10S

Abstract:
A water resistant device for the base Of the fiber-optic Christmas tree, comprising a main base unit, an upper base cover, a rotating unit, a fixing unit, a water resistant hood, a top cover and a tree unit, wherein, the on top of the main base unit is installed a light-emitting transmission device comprising a transmission device, a color disc, a transmission gear and a lamp bulb, surrounding a top of the main base unit being a plurality of fixing posts, at the center of the top of the post being a screw hole, surrounding it's rim being a specified number of recess grooves that are equally spaced, the upper cover having a plurality heat radiating grove holes on its bottom rim and top rim, at the center of the cover top being a through hole, inside the ringed groove on the rim of the hole top being a plurality of rollers, on the outside of cover unit and corresponding to each fixing post on the main base unit being a sunk hole, the bottom of the hole having a through hole, on the cover unit and close to the rim of the through hole being a plurality of recess holes, at the center of the hole being a screw hole, on the side of the cover unit and corresponding to the recess groove on the main base unit being a track groove to engage with the support leg; the rotating unit being a hollow tube that can be installed inside the through hole on the upper base cover, on the bottom rim of the base unit being an outside gear in mesh with and driven by the transmission gear on the light-emitting transmission device inside the main base unit; characterized in that:at the outside rim on top of the base unit of the main base unit being a ringed wall; at the outside rim on top of the base unit of the main base unit being a ringed wall; in addition to an outside gear on its bottom rim, the rotating unit has a transparent bottom plate that is fixed onto the base of its interior through hole, comprising a non-through cup structure of the base unit; the fixing unit being a hollow tube, having a protruding ear respectively at the position of each recess hole on the upper base cover, on each protruding ear being a through hole to match the screw hole of the recess hole; the water resistant hood being shaped like a reversed hopper, having an outside diameter slightly larger than the outside diameter of the cover unit of the upper base cover, the bottom of the hood unit corresponding to each sunk hole on the upper base cover, the hood having a plurality of supporting posts that are vertically extended downward; the top cover is shaped like a ring unit having a reversed-u section, on the bottom of its inner rim in the ring hole being a ringed groove having a bore to match the opening on top of the rotating unit; the tree unit is shaped like a hollow cylinder, having a slightly retracted-bore at its lower section, serving to accommodate the rotating unit; in the assembly of the above components, the upper base cover is used to cover the upper part of the main base unit, using a screw inserting in the through hole in each sunk hole on the upper base cover, inserted into the screw hole at the top of the fixing post on the main base unit to tightly join the two parts, then the rotating unit is inserted into the through hole on the upper base cover, so the outside gear on its bottom rim is in mesh with the transmission gear of the light-emitting transmission device, then the fixing unit is mounted outside the rotating unit, so each protruding ear is aligned with each recess hole on the upper base cover, using the screw to insert through the through hole on the protruding ear into the screw hole at the center of the recess hole, then the water resistant hood with its hollow hole is mounted outside the fixing unit, each supporting post on its bottom inserting into each sunk hole on the upper base cover, so the water resistant hood is fastened on an upper part of the upper base cover, and the top cover with its rings groove on its bottom rim is fastened to an opening at the top rim of the rotating unit, the tree unit can be directly installed inside the rotating unit to accommodate the fiber-optic Christmas tree.