Bulb set structure

A bulb set structure comprises a plug having two guiding pieces to connect with a power source and to assemble with a LED bulb set and a fitter, an orifice to output alternating current, and a power converting unit having one end to electrically connect with the guiding pieces, and having another end to connect with wires of the LED bulb set and the fitter by using the joining segment to convert the alternating current into direct current, and a circuit board is used to rectify the alternating current to output direct current to emit LED bulb set and to transmit the alternating current to the fitter.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a bulb set structure that can stabilize voltage and rectify current.

2. Description of the Prior

Conventional bulb set structure disclosed in U.S. Pat. Nos. 4,768,979, 4,274,698, 4,345,223, 4,904,976, and 7,201,616 can not reduce rectification, and if alternating current is required, an extend power cord has to be used to cause an inconvenience.

In addition, a conventional bulb set is disclosed in U.S. Pat. No. 7,140,920 that includes a plug, one end of which is provided with two opposite guide pieces, and another end of which is connected to two wires, and includes a voltage stabilizer to convert alternating current into direct current, and the voltage stabilizer is electrically connected to the guide pieces and the wires. However, such a conventional bulb set will cause a short circuit on a rainy day.

SUMMARY OF THE INVENTION

The primary object of the present invention is to provide a bulb set structure that is capable of converting alternating current into direct current to supply power to the LED bulb set.

Another object of the present invention is to provide a bulb set structure that is capable of assembling bulbs or connect to extended power cord.

A bulb set structure according to a preferred embodiment of the present invention comprises:

a plug, a power converting unit, a LED bulb set, and a fitter, wherein

the plug includes two guiding pieces disposed on one end thereof and an orifice to output alternating current, and another end of the plug is connected with the LED bulb set and the fitter, and the plug includes a cavity and a plurality of chambers formed therein to receive the power converting unit;

the power converting unit at least includes a circuit board, an adaptor, two copper pieces, and a number of joining segments, the copper pieces are disposed on one end of the circuit board to electrically connect with the guiding pieces, the joining segment is mounted on another end of the circuit board and at least includes a first joining segment and two second joining segments, the adaptor is used to convert the alternating current into direct current, and the circuit board allows to convert the alternating current via the adaptor so that the direct current is outputted from the first joining segment, and the alternating current is outputted from the second joining segments, hence the circuit board and the adaptor are received in the cavity, and the first and the second joining segments are received in the chambers, the first joining segment is electrically connected with the LED bulb set, and the second joining segment is electrically connected with the fitter;

the LED bulb set includes a number of LED bulbs fitted together by using a first wire, and one end of the first wire is electrically connected with the first joining segment so that to pass the direct current to emit the LED bulbs;

the fitter includes a socket connected to a second wire, and a front end of the second wire is electrically connected with the second joining segment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring toFIGS. 1-7, a bulb set structure according to a preferred embodiment of the present invention comprises a housing10of a plug1, an inserting member20, two guide pieces30, a number of fuses41, a cover60, and an internal lid73, a power converting unit50, a LED bulb set80, and a fitter90, wherein

the housing10is formed in a rectangle shape, and includes a receiving portion11disposed on an inner rim thereof to receive the inserting member20, and includes a sliding groove12, a hole13, and a bore14formed on one end thereof adjacent to the receiving portion11, and the receiving portion11includes a column15with a screwing aperture151mounted on one side thereof. The sliding groove12is provided to fit a movable member71so that the movable member71moves along the sliding groove12to close or open the hole13, and the bore14communicates with the receiving portion11to extend the guiding pieces30outward, and the guiding pieces30are fixed in the inserting member20.

The inserting member20is formed in an inverted L shape, and includes a connecting portion22fixed on one side thereof to receive the guiding pieces30and the fuses41, and includes a cavity21, a plurality of chambers23, and a coupling segment24disposed on another side thereof. Among the cavity21, the connecting portion22, and the chambers23are defined a plurality of spaces respectively. The connecting portion22includes a retaining recess221, a plate member222, and a slot223symmetrical to each other to join the guiding pieces30and the fuses41. The cavity21and the chamber23are provided to receive electronic elements in response to the power converting unit50, and the coupling segment24is comprised of a number of curved trenches241and limiting openings242to auxiliarily position the wires.

The guiding pieces30are disposed in the retaining recess221of the inserting member20, and each guiding piece30includes an inserting section31, a connect section32, and an extending section33. When the guiding pieces30are disposed in the retaining recess221, the connect section32and the plate member222of the connecting portion22are spaced to form an orifice25, and each extending section33is mounted on one side of the slot223to electrically connect with the fuse41.

The power converting unit50is comprised of a circuit board51, an adaptor52on the circuit board51, two copper pieces53, and a plurality of joining segments54,55. The circuit board51is a conventional PCB board, and includes one end in response to the connecting portion22to be welded with the copper pieces53, and includes another end to be welded with the joining segments54,55. The joining segments54,55at least includes a first joining segment54and two second joining ends55so that the circuit board51and the adaptor52are fixed in the cavity21, and the first and the second joining segments54,55are secured in the chambers23. Besides, one ends of the cooper pieces53are electrically connected with the guiding piece30by fitting the fuses41, the first joining segment54is electrically connected with the LED bulb set80, and the second joining end55is electrically with the fitter90.

With reference toFIGS. 5-7, the power converting unit50is used to reduce voltage and have rectification so that the adaptor52is disposed on the circuit board51of the plug1, and two diodes521of the fitter90and a resistor522are assembled together to form a bridge rectification.

The adaptor52includes the diodes521, the resistor522, a metallized polyester film capacitor523, and a filter capacitor524to match with other electronic elements to control safety, thus obtaining twice rectification.

Besides, the adaptor52also includes the diodes521, the resistor522, and the metallized polyester film capacitor523to match with other electronic elements to control safety, thus obtaining full-wave rectification.

Thereby, the adaptor52allows to reduce 100-240 volt of voltage to be used in bulb set safely, and an alternating current is converted into a direct current. After the alternating current is converted via the adaptor52, the direct current is outputted from the first joining segment54, and the second joining segment55is used to output the alternating current.

It is to be noted that the first and the second joining segments are made of metal materials and twisted to form a resilient member, one end of which is welded to the circuit board51, and another end of which is provided with flexible members541,551to electrically connect with the LED bulb set80and the fitter90individually.

When the related components of the power converting unit50are disposed on the inserting member20, the internal lid73is covered to the circuit board51, and a layer of waterproof glue74is applied to the two isolating sections211, and two ends of the circuit board51which can not be covered by the internal lid73is also applied by the waterproof glue74to obtain waterproof function.

The cover60is disposed to the housing10, and one end of the housing10is fixed by tabs61, and another end of the housing10is screwed to a notch64by a screw62. Thereafter, the cover60is locked to the column15of the housing10to cover the inserting member20, and the orifice25includes a dent63arranged on an outer side thereof to insert the guiding piece of a plug2of another bulb set into the orifice25, thereby assembling the bulb sets together.

The LED bulb set80includes a plurality of LED bulbs82assembled together by using a first wire81, such that one end of the first wire81is electrically connected with the first joining segment54so as to pass the direct current, thus emitting LED bulbs. Furthermore, an outer rim of the first wire81includes a guide segment811liquification formed from solder metal fluid, therefore as connecting electricity, the guide segment811is inserted in the flexible member541of the first joining segment54so that the flexible member541abuts against the guide segment811.

The fitter90includes a second wire91connected to a plug92, and a front end of the second wire91is electrically connected with the second joining segment55, and an outer rim of the second wire91is liquification formed from solder metal fluid to obtain a guide segment911, therefore as connecting electricity, the guide segment911is inserted in the flexible member551of the second joining segment55so that the flexible member551abuts against the guide segment911.

Thereby, as the plug1is connected to a plug of the alternating current, the alternating current is converted into the direct current to supply power toward the LED bulb set80, and the direct current is outputted from the orifice25and the fitter90to supply power toward another Christmas bulb set or an extended power cord. Referring toFIGS. 8-10, the plug1provides various power output options, satisfying different demands.

In addition, the circuit board51of the power converting unit50, the adaptor52, the copper piece53, the first and the second joining segment54,55are received in the cavity21, the slot223, and the chamber23individually, and the waterproof glue74is applied to the isolating sections211and two outer ends of the circuit board51, having waterproof function. Also, as on a rainy day, the chamber23is used to isolate rains to prevent from a short circuit.