Patent ID: 7530833

Claim:
An energy saving lamp holder, comprising: a body, in the shape of a saucer, having a load cylinder at its center, where the load cylinder embraces a central vessel and a set of catch troughs, and a set of deep side cavities opened on the load cylinder; a set of conducting spring leaves, each made of a slice with several folds into the main of transversely resided contact plate; the conducting spring leaves being fastened inside the load cylinder, where the ends of the contact plates of the conducting spring leaves are inserted into the corresponding catch troughs respectively for a lodging; the conducting spring leaves being connected to the electric poles of power supply external to the body for the electric conduction; a set of elastic articles, fastened to the back of the contact plates, with one end being fixed in the corresponding catch trough for a lodging; offering the contact plates, which are bent by external force, the restoration as the external force disappears; an anti-backspin guide plate, lump in shape and located in the load cylinder, having slanting walls corresponding to the foregoing conducting spring leaves, keeping a distance with the neighboring conducting spring leaf during assembly, forming a downward housing in the middle of its bottom side, for accommodating an elastic article, where the other end of the elastic article is inserted into the central vessel of the body, and the sides of the anti-backspin guide plate forming lodging necks which are capable of being put into side cavities and having a pushing chunk at its both end; and a positioning plate, a circular plate covering on the opening of the load cylinder, and flanges formed on its rim, which can fit in the side cavities of the load cylinder, the positioning plate having a set of positioning grooves where each is divided into a big hole and a connected thin arc groove, the big hole being offering for the insertion of the conducting terminals of the energy saving bulb and spinning along the thin arc groove; when installing the energy saving bulb, the conducting terminals pressing the anti-backspin guide plate moving inward to arrive at the slanting wall and moving across the slanting wall until touching the contact plate for the electric conduction, where the anti-backspin guide plate is counteracted by the elastic article to move back to its original place, seizing the conducting terminals by jointing with the contact plate, to refrain the conducting terminals from back spinning; during demounting the energy saving bulb, it being to press the pushing chunks to move the anti-backspin guide plate and the lodging neck inward down the side cavities, followed by turning the energy saving bulb to have its conducting terminals spinning through the thin arc groove to the big hole, where the conducting terminals are able to exit from the state of being seized, back to the top side of the anti-backspin guide plate, and the bulb being ready for dismounting.